libview/ev-view.c

   1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
   2 /* this file is part of evince, a gnome document viewer
   3  *
   4  *  Copyright (C) 2004 Red Hat, Inc
   5  *
   6  * Evince is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * Evince is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "config.h"
  22
  23 #include <stdlib.h>
  24 #include <math.h>
  25 #include <string.h>
  26
  27 #include <glib/gi18n-lib.h>
  28 #include <gtk/gtk.h>
  29 #include <gdk/gdkkeysyms.h>
  30
  31 #include "ev-mapping.h"
  32 #include "ev-document-forms.h"
  33 #include "ev-document-images.h"
  34 #include "ev-document-links.h"
  35 #include "ev-document-misc.h"
  36 #include "ev-document-transition.h"
  37 #include "ev-pixbuf-cache.h"
  38 #include "ev-page-cache.h"
  39 #include "ev-transition-animation.h"
  40 #include "ev-view-marshal.h"
  41 #include "ev-document-annotations.h"
  42 #include "ev-annotation-window.h"
  43 #include "ev-view.h"
  44 #include "ev-view-accessible.h"
  45 #include "ev-view-private.h"
  46 #include "ev-view-type-builtins.h"
  47
  48 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  49 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  50 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  51
  52 enum {
  53         PROP_0,
  54         PROP_CONTINUOUS,
  55         PROP_DUAL_PAGE,
  56         PROP_FULLSCREEN,
  57         PROP_PRESENTATION,
  58         PROP_SIZING_MODE,
  59         PROP_ZOOM,
  60         PROP_ROTATION,
  61         PROP_HAS_SELECTION,
  62 };
  63
  64 enum {
  65         SIGNAL_BINDING_ACTIVATED,
  66         SIGNAL_HANDLE_LINK,
  67         SIGNAL_EXTERNAL_LINK,
  68         SIGNAL_POPUP_MENU,
  69         N_SIGNALS,
  70 };
  71
  72 enum {
  73         TARGET_DND_URI,
  74         TARGET_DND_TEXT,
  75         TARGET_DND_IMAGE
  76 };
  77
  78 static guint signals[N_SIGNALS];
  79
  80 typedef enum {
  81         EV_VIEW_FIND_NEXT,
  82         EV_VIEW_FIND_PREV
  83 } EvViewFindDirection;
  84
  85 #define ZOOM_IN_FACTOR  1.2
  86 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  87
  88 #define SCROLL_TIME 150
  89
  90 /*** Scrolling ***/
  91 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  92                                                               GtkAdjustment      *hadjustment,
  93                                                               GtkAdjustment      *vadjustment);
  94 static void       view_update_range_and_current_page         (EvView             *view);
  95 static void       set_scroll_adjustment                      (EvView             *view,
  96                                                               GtkOrientation      orientation,
  97                                                               GtkAdjustment      *adjustment);
  98 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
  99                                                               guint               keyval,
 100                                                               GdkModifierType modifiers,
 101                                                               GtkScrollType       scroll,
 102                                                               gboolean            horizontal);
 103 static void       ensure_rectangle_is_visible                (EvView             *view,
 104                                                               GdkRectangle       *rect);
 105
 106 /*** Geometry computations ***/
 107 static void       compute_border                             (EvView             *view,
 108                                                               int                 width,
 109                                                               int                 height,
 110                                                               GtkBorder          *border);
 111 static void       get_page_y_offset                          (EvView             *view,
 112                                                               int                 page,
 113                                                               int                *y_offset);
 114 static gboolean   get_page_extents                           (EvView             *view,
 115                                                               gint                page,
 116                                                               GdkRectangle       *page_area,
 117                                                               GtkBorder          *border);
 118 static void       view_rect_to_doc_rect                      (EvView             *view,
 119                                                               GdkRectangle       *view_rect,
 120                                                               GdkRectangle       *page_area,
 121                                                               EvRectangle        *doc_rect);
 122 static void       doc_rect_to_view_rect                      (EvView             *view,
 123                                                               int                 page,
 124                                                               EvRectangle        *doc_rect,
 125                                                               GdkRectangle       *view_rect);
 126 static gboolean   get_dual_even_left                         (EvView             *view);
 127 static void       find_page_at_location                      (EvView             *view,
 128                                                               gdouble             x,
 129                                                               gdouble             y,
 130                                                               gint               *page,
 131                                                               gint               *x_offset,
 132                                                               gint               *y_offset);
 133 static void       doc_point_to_view_point                    (EvView             *view,
 134                                                               int                 page,
 135                                                               EvPoint            *doc_point,
 136                                                               GdkPoint           *view_point);
 137 /*** Hyperrefs ***/
 138 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 139                                                               gdouble             x,
 140                                                               gdouble             y);
 141 static char*      tip_from_link                              (EvView             *view,
 142                                                               EvLink             *link);
 143 /*** Forms ***/
 144 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 145                                                                gdouble            x,
 146                                                                gdouble            y);
 147
 148 /*** Annotations ***/
 149 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 150                                                               gdouble             x,
 151                                                               gdouble             y);
 152 static void          show_annotation_windows                 (EvView             *view,
 153                                                               gint                page);
 154 static void          hide_annotation_windows                 (EvView             *view,
 155                                                               gint                page);
 156 /*** GtkWidget implementation ***/
 157 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 158                                                               GtkRequisition     *requisition);
 159 static void       ev_view_size_request_continuous            (EvView             *view,
 160                                                               GtkRequisition     *requisition);
 161 static void       ev_view_size_request_dual_page             (EvView             *view,
 162                                                               GtkRequisition     *requisition);
 163 static void       ev_view_size_request_single_page           (EvView             *view,
 164                                                               GtkRequisition     *requisition);
 165 static void       ev_view_size_request                       (GtkWidget          *widget,
 166                                                               GtkRequisition     *requisition);
 167 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 168                                                               GtkAllocation      *allocation);
 169 static void       ev_view_realize                            (GtkWidget          *widget);
 170 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 171                                                               GdkEventScroll     *event);
 172 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 173                                                               GdkEventExpose     *event);
 174 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 175 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 176                                                               GdkEventButton     *event);
 177 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 178                                                               GdkEventMotion     *event);
 179 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 180                                                               GdkEventButton     *event);
 181 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 182                                                               GdkEventCrossing   *event);
 183 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 184                                                               GdkEventCrossing   *event);
 185 static void       ev_view_style_set                          (GtkWidget          *widget,
 186                                                               GtkStyle           *old_style);
 187 static void       ev_view_remove_all                         (EvView             *view);
 188
 189 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 190
 191 /*** Drawing ***/
 192 static guint32    ev_gdk_color_to_rgb                        (const GdkColor     *color);
 193 static void       draw_rubberband                            (GtkWidget          *widget,
 194                                                               GdkWindow          *window,
 195                                                               const GdkRectangle *rect,
 196                                                               guchar              alpha);
 197 static void       highlight_find_results                     (EvView             *view,
 198                                                               int                 page);
 199 static void       draw_one_page                              (EvView             *view,
 200                                                               gint                page,
 201                                                               cairo_t            *cr,
 202                                                               GdkRectangle       *page_area,
 203                                                               GtkBorder          *border,
 204                                                               GdkRectangle       *expose_area,
 205                                                               gboolean           *page_ready);
 206 static void       draw_loading_text                          (EvView             *view,
 207                                                               GdkRectangle       *page_area,
 208                                                               GdkRectangle       *expose_area);
 209 static void       ev_view_reload_page                        (EvView             *view,
 210                                                               gint                page,
 211                                                               GdkRegion          *region);
 212
 213 /*** Callbacks ***/
 214 static void       ev_view_change_page                        (EvView             *view,
 215                                                               gint                new_page,
 216                                                               gboolean            start_transition);
 217 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 218                                                               GdkRegion          *region,
 219                                                               EvView             *view);
 220 static void       ev_view_page_changed_cb                    (EvDocumentModel    *model,
 221                                                               gint                old_page,
 222                                                               gint                new_page,
 223                                                               EvView             *view);
 224 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 225                                                               EvView             *view);
 226
 227 /*** GObject ***/
 228 static void       ev_view_finalize                           (GObject            *object);
 229 static void       ev_view_destroy                            (GtkObject          *object);
 230 static void       ev_view_set_property                       (GObject            *object,
 231                                                               guint               prop_id,
 232                                                               const GValue       *value,
 233                                                               GParamSpec         *pspec);
 234 static void       ev_view_get_property                       (GObject            *object,
 235                                                               guint               prop_id,
 236                                                               GValue             *value,
 237                                                               GParamSpec         *pspec);
 238 static void       ev_view_class_init                         (EvViewClass        *class);
 239 static void       ev_view_init                               (EvView             *view);
 240
 241 /*** Zoom and sizing ***/
 242 static double   zoom_for_size_fit_width                      (gdouble doc_width,
 243                                                               gdouble doc_height,
 244                                                               int     target_width,
 245                                                               int     target_height);
 246 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 247                                                               gdouble doc_height,
 248                                                               int     target_width,
 249                                                               int     target_height);
 250 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 251                                                               gdouble doc_height,
 252                                                               int     target_width,
 253                                                               int     target_height);
 254 static void     ev_view_zoom_for_size                        (EvView *view,
 255                                                               int     width,
 256                                                               int     height);
 257 static void     ev_view_zoom_for_size_presentation           (EvView *view,
 258                                                               int     width,
 259                                                               int     height);
 260 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 261                                                                 int     width,
 262                                                                 int     height);
 263 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 264                                                                 int     width,
 265                                                                 int     height);
 266 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 267                                                                 int     width,
 268                                                                 int     height);
 269 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 270                                                                 int     width,
 271                                                                 int     height);
 272 /*** Cursors ***/
 273 static GdkCursor* ev_view_create_invisible_cursor            (void);
 274 static void       ev_view_set_cursor                         (EvView             *view,
 275                                                               EvViewCursor        new_cursor);
 276 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 277                                                               gint x,
 278                                                               gint y);
 279
 280 /*** Find ***/
 281 static gint         ev_view_find_get_n_results               (EvView             *view,
 282                                                               gint                page);
 283 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 284                                                               gint                page,
 285                                                               gint                result);
 286 static void       jump_to_find_result                        (EvView             *view);
 287 static void       jump_to_find_page                          (EvView             *view,
 288                                                               EvViewFindDirection direction,
 289                                                               gint                shift);
 290
 291 /*** Selection ***/
 292 static void       compute_selections                         (EvView             *view,
 293                                                               EvSelectionStyle    style,
 294                                                               GdkPoint           *start,
 295                                                               GdkPoint           *stop);
 296 static void       clear_selection                            (EvView             *view);
 297 static void       clear_link_selected                        (EvView             *view);
 298 static void       selection_free                             (EvViewSelection    *selection);
 299 static char*      get_selected_text                          (EvView             *ev_view);
 300 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 301                                                               GtkSelectionData   *selection_data,
 302                                                               guint               info,
 303                                                               gpointer            data);
 304 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 305                                                               gpointer            data);
 306 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 307
 308 /*** Presentation ***/
 309 static void       ev_view_presentation_transition_start      (EvView             *ev_view);
 310 static void       ev_view_presentation_transition_stop       (EvView             *ev_view);
 311
 312
 313 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 314
 315 /* HeightToPage cache */
 316 #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
 317
 318 static void
 319 build_height_to_page (EvHeightToPageCache *cache,
 320                       EvDocument          *document,
 321                       gint                 rotation)
 322 {
 323         gboolean swap, uniform, dual_even_left;
 324         int i;
 325         double uniform_height, page_height, next_page_height;
 326         double saved_height;
 327         gdouble u_width, u_height;
 328         gint n_pages;
 329
 330         swap = (rotation == 90 || rotation == 270);
 331
 332         uniform = ev_document_is_page_size_uniform (document);
 333         n_pages = ev_document_get_n_pages (document);
 334         dual_even_left = (n_pages > 2);
 335
 336         g_free (cache->height_to_page);
 337         g_free (cache->dual_height_to_page);
 338
 339         cache->rotation = rotation;
 340         cache->height_to_page = g_new0 (gdouble, n_pages + 1);
 341         cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
 342
 343         if (uniform)
 344                 ev_document_get_page_size (document, 0, &u_width, &u_height);
 345
 346         saved_height = 0;
 347         for (i = 0; i <= n_pages; i++) {
 348                 if (uniform) {
 349                         uniform_height = swap ? u_width : u_height;
 350                         cache->height_to_page[i] = i * uniform_height;
 351                 } else {
 352                         if (i < n_pages) {
 353                                 gdouble w, h;
 354
 355                                 ev_document_get_page_size (document, i, &w, &h);
 356                                 page_height = swap ? w : h;
 357                         } else {
 358                                 page_height = 0;
 359                         }
 360                         cache->height_to_page[i] = saved_height;
 361                         saved_height += page_height;
 362                 }
 363         }
 364
 365         if (dual_even_left && !uniform) {
 366                 gdouble w, h;
 367
 368                 ev_document_get_page_size (document, 0, &w, &h);
 369                 saved_height = swap ? w : h;
 370         } else {
 371                 saved_height = 0;
 372         }
 373
 374         for (i = dual_even_left; i < n_pages + 2; i += 2) {
 375                 if (uniform) {
 376                         uniform_height = swap ? u_width : u_height;
 377                         cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
 378                         if (i + 1 < n_pages + 2)
 379                                 cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
 380                 } else {
 381                         if (i + 1 < n_pages) {
 382                                 gdouble w, h;
 383
 384                                 ev_document_get_page_size (document, i + 1, &w, &h);
 385                                 next_page_height = swap ? w : h;
 386                         } else {
 387                                 next_page_height = 0;
 388                         }
 389
 390                         if (i < n_pages) {
 391                                 gdouble w, h;
 392
 393                                 ev_document_get_page_size (document, i, &w, &h);
 394                                 page_height = swap ? w : h;
 395                         } else {
 396                                 page_height = 0;
 397                         }
 398
 399                         if (i + 1 < n_pages + 2) {
 400                                 cache->dual_height_to_page[i] = saved_height;
 401                                 cache->dual_height_to_page[i + 1] = saved_height;
 402                                 saved_height += MAX(page_height, next_page_height);
 403                         } else {
 404                                 cache->dual_height_to_page[i] = saved_height;
 405                         }
 406                 }
 407         }
 408 }
 409
 410 static void
 411 ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
 412                                     EvDocument          *document,
 413                                     gint                 page,
 414                                     gint                 rotation,
 415                                     gdouble             *height,
 416                                     gdouble             *dual_height)
 417 {
 418         if (cache->rotation != rotation)
 419                 build_height_to_page (cache, document, rotation);
 420
 421         *height = cache->height_to_page[page];
 422         *dual_height = cache->dual_height_to_page[page];
 423 }
 424
 425 static void
 426 ev_height_to_page_cache_free (EvHeightToPageCache *cache)
 427 {
 428         if (cache->height_to_page) {
 429                 g_free (cache->height_to_page);
 430                 cache->height_to_page = NULL;
 431         }
 432
 433         if (cache->dual_height_to_page) {
 434                 g_free (cache->dual_height_to_page);
 435                 cache->dual_height_to_page = NULL;
 436         }
 437         g_free (cache);
 438 }
 439
 440 static EvHeightToPageCache *
 441 ev_view_get_height_to_page_cache (EvView *view)
 442 {
 443         EvHeightToPageCache *cache;
 444
 445         if (!view->document)
 446                 return NULL;
 447
 448         cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
 449         if (!cache) {
 450                 cache = g_new0 (EvHeightToPageCache, 1);
 451                 build_height_to_page (cache, view->document, view->rotation);
 452                 g_object_set_data_full (G_OBJECT (view->document),
 453                                         EV_HEIGHT_TO_PAGE_CACHE_KEY,
 454                                         cache,
 455                                         (GDestroyNotify)ev_height_to_page_cache_free);
 456         }
 457
 458         return cache;
 459 }
 460
 461 static void
 462 ev_view_get_height_to_page (EvView *view,
 463                             gint    page,
 464                             gint   *height,
 465                             gint   *dual_height)
 466 {
 467         gdouble h, dh;
 468
 469         if (!view->height_to_page_cache)
 470                 return;
 471
 472         ev_height_to_page_cache_get_height (view->height_to_page_cache,
 473                                             view->document,
 474                                             page,
 475                                             view->rotation,
 476                                             &h, &dh);
 477         if (height)
 478                 *height = (gint)(h * view->scale + 0.5);
 479
 480         if (dual_height)
 481                 *dual_height = (gint)(dh * view->scale + 0.5);
 482 }
 483
 484 static gint
 485 ev_view_get_scrollbar_size (EvView        *view,
 486                             GtkOrientation orientation)
 487 {
 488         GtkWidget *widget = GTK_WIDGET (view);
 489         GtkWidget *sb;
 490         GtkWidget *swindow = gtk_widget_get_parent (GTK_WIDGET (view));
 491         GtkRequisition req;
 492         gint spacing;
 493
 494         if (!GTK_IS_SCROLLED_WINDOW (swindow))
 495                 return 0;
 496
 497         if (orientation == GTK_ORIENTATION_VERTICAL) {
 498                 if (widget->allocation.height >= widget->requisition.height)
 499                         sb = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (swindow));
 500                 else
 501                         return 0;
 502         } else {
 503                 if (widget->allocation.width >= widget->requisition.width)
 504                         sb = gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (swindow));
 505                 else
 506                         return 0;
 507         }
 508
 509         gtk_widget_style_get (swindow, "scrollbar_spacing", &spacing, NULL);
 510         gtk_widget_size_request (sb, &req);
 511
 512         return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing;
 513 }
 514
 515 static void
 516 scroll_to_point (EvView        *view,
 517                  gdouble        x,
 518                  gdouble        y,
 519                  GtkOrientation orientation)
 520 {
 521         if (orientation == GTK_ORIENTATION_VERTICAL) {
 522                 if (view->continuous) {
 523                         gtk_adjustment_clamp_page (view->vadjustment,
 524                                                    y - view->spacing / 2,
 525                                                    y + view->vadjustment->page_size);
 526                 } else {
 527                         gtk_adjustment_set_value (view->vadjustment,
 528                                                   CLAMP (y,
 529                                                   view->vadjustment->lower,
 530                                                   view->vadjustment->upper -
 531                                                   view->vadjustment->page_size));
 532                 }
 533         } else {
 534                 if (view->dual_page) {
 535                         gtk_adjustment_clamp_page (view->hadjustment, x,
 536                                                    x + view->hadjustment->page_size);
 537                 } else {
 538                         gtk_adjustment_set_value (view->hadjustment,
 539                                                   CLAMP (x,
 540                                                   view->hadjustment->lower,
 541                                                   view->hadjustment->upper -
 542                                                   view->hadjustment->page_size));
 543                 }
 544         }
 545 }
 546
 547 static void
 548 ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation)
 549 {
 550         gdouble x, y;
 551
 552         if (!view->document)
 553                 return;
 554
 555         if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) ||
 556             (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) {
 557                 GdkRectangle page_area;
 558                 GtkBorder    border;
 559
 560                 get_page_extents (view, view->current_page, &page_area, &border);
 561                 x = page_area.x;
 562                 y = page_area.y;
 563         } else {
 564                 GdkPoint view_point;
 565
 566                 doc_point_to_view_point (view, view->current_page,
 567                                          &view->pending_point, &view_point);
 568                 x = view_point.x;
 569                 y = view_point.y;
 570         }
 571
 572         scroll_to_point (view, x, y, orientation);
 573 }
 574
 575 static void
 576 view_set_adjustment_values (EvView         *view,
 577                             GtkOrientation  orientation)
 578 {
 579         GtkWidget *widget = GTK_WIDGET (view);
 580         GtkAdjustment *adjustment;
 581         int requisition;
 582         int allocation;
 583
 584         double factor;
 585         gint new_value;
 586
 587         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 588                 requisition = widget->requisition.width;
 589                 allocation = widget->allocation.width;
 590                 adjustment = view->hadjustment;
 591         } else {
 592                 requisition = widget->requisition.height;
 593                 allocation = widget->allocation.height;
 594                 adjustment = view->vadjustment;
 595         }
 596
 597         if (!adjustment)
 598                 return;
 599
 600         factor = 1.0;
 601         switch (view->pending_scroll) {
 602                 case SCROLL_TO_KEEP_POSITION:
 603                 case SCROLL_TO_FIND_LOCATION:
 604                         factor = (adjustment->value) / adjustment->upper;
 605                         break;
 606                 case SCROLL_TO_PAGE_POSITION:
 607                         break;
 608                 case SCROLL_TO_CENTER:
 609                         factor = (adjustment->value + adjustment->page_size * 0.5) / adjustment->upper;
 610                         break;
 611         }
 612
 613         adjustment->page_size = allocation;
 614         adjustment->step_increment = allocation * 0.1;
 615         adjustment->page_increment = allocation * 0.9;
 616         adjustment->lower = 0;
 617         adjustment->upper = MAX (allocation, requisition);
 618
 619         /*
 620          * We add 0.5 to the values before to average out our rounding errors.
 621          */
 622         switch (view->pending_scroll) {
 623                 case SCROLL_TO_KEEP_POSITION:
 624                 case SCROLL_TO_FIND_LOCATION:
 625                         new_value = CLAMP (adjustment->upper * factor + 0.5, 0, adjustment->upper - adjustment->page_size);
 626                         gtk_adjustment_set_value (adjustment, (int)new_value);
 627                         break;
 628                 case SCROLL_TO_PAGE_POSITION:
 629                         ev_view_scroll_to_page_position (view, orientation);
 630                         break;
 631                 case SCROLL_TO_CENTER:
 632                         new_value = CLAMP (adjustment->upper * factor - adjustment->page_size * 0.5 + 0.5,
 633                                            0, adjustment->upper - adjustment->page_size);
 634                         gtk_adjustment_set_value (adjustment, (int)new_value);
 635                         break;
 636         }
 637
 638         gtk_adjustment_changed (adjustment);
 639 }
 640
 641 static void
 642 view_update_range_and_current_page (EvView *view)
 643 {
 644         gint start = view->start_page;
 645         gint end = view->end_page;
 646
 647         /* Presentation trumps all other modes */
 648         if (view->presentation) {
 649                 view->start_page = view->current_page;
 650                 view->end_page = view->current_page;
 651         } else if (view->continuous) {
 652                 GdkRectangle current_area, unused, page_area;
 653                 GtkBorder border;
 654                 gboolean found = FALSE;
 655                 gint area_max = -1, area;
 656                 gint best_current_page = -1;
 657                 int i, j = 0;
 658
 659                 if (!(view->vadjustment && view->hadjustment))
 660                         return;
 661
 662                 current_area.x = view->hadjustment->value;
 663                 current_area.width = view->hadjustment->page_size;
 664                 current_area.y = view->vadjustment->value;
 665                 current_area.height = view->vadjustment->page_size;
 666
 667                 for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
 668
 669                         get_page_extents (view, i, &page_area, &border);
 670
 671                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 672                                 area = unused.width * unused.height;
 673
 674                                 if (!found) {
 675                                         area_max = area;
 676                                         view->start_page = i;
 677                                         found = TRUE;
 678                                         best_current_page = i;
 679                                 }
 680                                 if (area > area_max) {
 681                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 682                                         area_max = area;
 683                                 }
 684
 685                                 view->end_page = i;
 686                                 j = 0;
 687                         } else if (found && view->current_page <= view->end_page) {
 688                                 if (view->dual_page && j < 1) {
 689                                         /* In dual mode  we stop searching
 690                                          * after two consecutive non-visible pages.
 691                                          */
 692                                         j++;
 693                                         continue;
 694                                 }
 695                                 break;
 696                         }
 697                 }
 698
 699                 if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) {
 700                         best_current_page = MAX (best_current_page, view->start_page);
 701
 702                         if (view->current_page != best_current_page) {
 703                                 view->current_page = best_current_page;
 704                                 ev_document_model_set_page (view->model, best_current_page);
 705                         }
 706                 }
 707         } else if (view->dual_page) {
 708                 if (view->current_page % 2 == get_dual_even_left (view)) {
 709                         view->start_page = view->current_page;
 710                         if (view->current_page + 1 < ev_document_get_n_pages (view->document))
 711                                 view->end_page = view->start_page + 1;
 712                         else
 713                                 view->end_page = view->start_page;
 714                 } else {
 715                         if (view->current_page < 1)
 716                                 view->start_page = view->current_page;
 717                         else
 718                                 view->start_page = view->current_page - 1;
 719                         view->end_page = view->current_page;
 720                 }
 721         } else {
 722                 view->start_page = view->current_page;
 723                 view->end_page = view->current_page;
 724         }
 725
 726         if (start != view->start_page || end != view->end_page) {
 727                 gint i;
 728
 729                 for (i = start; i < view->start_page && start != -1; i++) {
 730                         hide_annotation_windows (view, i);
 731                 }
 732
 733                 for (i = end; i > view->end_page && end != -1; i--) {
 734                         hide_annotation_windows (view, i);
 735                 }
 736         }
 737
 738         ev_page_cache_set_page_range (view->page_cache,
 739                                       view->start_page,
 740                                       view->end_page);
 741         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 742                                         view->start_page,
 743                                         view->end_page,
 744                                         view->rotation,
 745                                         view->scale,
 746                                         view->selection_info.selections);
 747
 748         if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page))
 749             gtk_widget_queue_draw (GTK_WIDGET (view));
 750 }
 751
 752 static void
 753 set_scroll_adjustment (EvView *view,
 754                        GtkOrientation  orientation,
 755                        GtkAdjustment  *adjustment)
 756 {
 757         GtkAdjustment **to_set;
 758
 759         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 760                 to_set = &view->hadjustment;
 761         else
 762                 to_set = &view->vadjustment;
 763
 764         if (*to_set != adjustment) {
 765                 if (*to_set) {
 766                         g_signal_handlers_disconnect_by_func (*to_set,
 767                                                               (gpointer) on_adjustment_value_changed,
 768                                                               view);
 769                         g_object_unref (*to_set);
 770                 }
 771
 772                 *to_set = adjustment;
 773                 view_set_adjustment_values (view, orientation);
 774
 775                 if (*to_set) {
 776                         g_object_ref (*to_set);
 777                         g_signal_connect (*to_set, "value_changed",
 778                                           G_CALLBACK (on_adjustment_value_changed), view);
 779                 }
 780         }
 781 }
 782
 783 static void
 784 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 785                                 GtkAdjustment  *hadjustment,
 786                                 GtkAdjustment  *vadjustment)
 787 {
 788         EvView *view = EV_VIEW (layout);
 789
 790         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 791         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 792
 793         on_adjustment_value_changed (NULL, view);
 794 }
 795
 796 static void
 797 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 798                            guint           keyval,
 799                            GdkModifierType modifiers,
 800                            GtkScrollType   scroll,
 801                            gboolean        horizontal)
 802 {
 803   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 804
 805   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 806                                 "binding_activated", 2,
 807                                 GTK_TYPE_SCROLL_TYPE, scroll,
 808                                 G_TYPE_BOOLEAN, horizontal);
 809   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 810                                 "binding_activated", 2,
 811                                 GTK_TYPE_SCROLL_TYPE, scroll,
 812                                 G_TYPE_BOOLEAN, horizontal);
 813 }
 814
 815 static gdouble
 816 compute_scroll_increment (EvView        *view,
 817                           GtkScrollType  scroll)
 818 {
 819         GtkWidget *widget = GTK_WIDGET (view);
 820         GtkAdjustment *adjustment = view->vadjustment;
 821         GdkRegion *text_region, *region;
 822         gint page;
 823         GdkRectangle rect;
 824         EvRectangle doc_rect;
 825         GdkRectangle page_area;
 826         GtkBorder border;
 827         GdkRectangle *recs;
 828         gint n_recs;
 829         gdouble fraction = 1.0;
 830
 831         if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD)
 832                 return adjustment->page_size;
 833
 834         page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page;
 835
 836         text_region = ev_page_cache_get_text_mapping (view->page_cache, page);
 837         if (!text_region || gdk_region_empty (text_region))
 838                 return adjustment->page_size;
 839
 840         get_page_extents (view, page, &page_area, &border);
 841         rect.x = page_area.x + view->scroll_x;
 842         rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : widget->allocation.height - 5);
 843         rect.width = page_area.width;
 844         rect.height = 1;
 845         view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect);
 846
 847         /* Convert the doc rectangle into a GdkRectangle */
 848         rect.x = doc_rect.x1;
 849         rect.y = doc_rect.y1;
 850         rect.width = doc_rect.x2 - doc_rect.x1;
 851         rect.height = MAX (1, doc_rect.y2 - doc_rect.y1);
 852         region = gdk_region_rectangle (&rect);
 853
 854         gdk_region_intersect (region, text_region);
 855         gdk_region_get_rectangles (region, &recs, &n_recs);
 856         gdk_region_destroy (region);
 857         if (n_recs > 0) {
 858                 EvRenderContext *rc;
 859                 EvPage  *ev_page;
 860
 861                 ev_page = ev_document_get_page (view->document, page);
 862                 rc = ev_render_context_new (ev_page, view->rotation, view->scale);
 863                 g_object_unref (ev_page);
 864                 /* Get the selection region to know the height of the line */
 865                 doc_rect.x1 = doc_rect.x2 = recs[0].x + 0.5;
 866                 doc_rect.y1 = doc_rect.y2 = recs[0].y + 0.5;
 867
 868                 ev_document_doc_mutex_lock ();
 869                 region = ev_selection_get_selection_region (EV_SELECTION (view->document),
 870                                                             rc, EV_SELECTION_STYLE_LINE,
 871                                                             &doc_rect);
 872                 ev_document_doc_mutex_unlock ();
 873
 874                 g_object_unref (rc);
 875                 g_free (recs);
 876                 gdk_region_get_rectangles (region, &recs, &n_recs);
 877                 gdk_region_destroy (region);
 878                 if (n_recs > 0) {
 879                         fraction = 1 - (recs[0].height / adjustment->page_size);
 880                 }
 881                 g_free (recs);
 882         }
 883
 884         return adjustment->page_size * fraction;
 885
 886 }
 887
 888 void
 889 ev_view_scroll (EvView        *view,
 890                 GtkScrollType  scroll,
 891                 gboolean       horizontal)
 892 {
 893         GtkAdjustment *adjustment;
 894         double value, increment;
 895         gboolean first_page = FALSE;
 896         gboolean last_page = FALSE;
 897
 898         view->jump_to_find_result = FALSE;
 899
 900         if (view->presentation || view->sizing_mode == EV_SIZING_BEST_FIT) {
 901                 switch (scroll) {
 902                         case GTK_SCROLL_PAGE_BACKWARD:
 903                         case GTK_SCROLL_STEP_BACKWARD:
 904                                 ev_view_previous_page (view);
 905                                 break;
 906                         case GTK_SCROLL_PAGE_FORWARD:
 907                         case GTK_SCROLL_STEP_FORWARD:
 908                                 ev_view_next_page (view);
 909                                 break;
 910                         default:
 911                                 break;
 912                 }
 913                 return;
 914         }
 915
 916         /* Assign values for increment and vertical adjustment */
 917         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 918         value = adjustment->value;
 919
 920         /* Assign boolean for first and last page */
 921         if (view->current_page == 0)
 922                 first_page = TRUE;
 923         if (view->current_page == ev_document_get_n_pages (view->document) - 1)
 924                 last_page = TRUE;
 925
 926         switch (scroll) {
 927                 case GTK_SCROLL_PAGE_BACKWARD:
 928                         /* Do not jump backwards if at the first page */
 929                         if (value == (adjustment->lower) && first_page) {
 930                                 /* Do nothing */
 931                                 /* At the top of a page, assign the upper bound limit of previous page */
 932                         } else if (value == (adjustment->lower)) {
 933                                 value = adjustment->upper - adjustment->page_size;
 934                                 ev_view_previous_page (view);
 935                                 /* Jump to the top */
 936                         } else {
 937                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD);
 938                                 value = MAX (value - increment, adjustment->lower);
 939                         }
 940                         break;
 941                 case GTK_SCROLL_PAGE_FORWARD:
 942                         /* Do not jump forward if at the last page */
 943                         if (value == (adjustment->upper - adjustment->page_size) && last_page) {
 944                                 /* Do nothing */
 945                         /* At the bottom of a page, assign the lower bound limit of next page */
 946                         } else if (value == (adjustment->upper - adjustment->page_size)) {
 947                                 value = 0;
 948                                 ev_view_next_page (view);
 949                         /* Jump to the bottom */
 950                         } else {
 951                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD);
 952                                 value = MIN (value + increment, adjustment->upper - adjustment->page_size);
 953                         }
 954                         break;
 955                 case GTK_SCROLL_STEP_BACKWARD:
 956                         value -= adjustment->step_increment;
 957                         break;
 958                 case GTK_SCROLL_STEP_FORWARD:
 959                         value += adjustment->step_increment;
 960                         break;
 961                 case GTK_SCROLL_STEP_DOWN:
 962                         value -= adjustment->step_increment / 10;
 963                         break;
 964                 case GTK_SCROLL_STEP_UP:
 965                         value += adjustment->step_increment / 10;
 966                         break;
 967                 default:
 968                         break;
 969         }
 970
 971         value = CLAMP (value, adjustment->lower,
 972                        adjustment->upper - adjustment->page_size);
 973
 974         gtk_adjustment_set_value (adjustment, value);
 975 }
 976
 977 #define MARGIN 5
 978
 979 static void
 980 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 981 {
 982         GtkWidget *widget = GTK_WIDGET (view);
 983         GtkAdjustment *adjustment;
 984         int value;
 985
 986         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 987
 988         adjustment = view->vadjustment;
 989
 990         if (rect->y < adjustment->value) {
 991                 value = MAX (adjustment->lower, rect->y - MARGIN);
 992                 gtk_adjustment_set_value (view->vadjustment, value);
 993         } else if (rect->y + rect->height >
 994                    adjustment->value + widget->allocation.height) {
 995                 value = MIN (adjustment->upper, rect->y + rect->height -
 996                              widget->allocation.height + MARGIN);
 997                 gtk_adjustment_set_value (view->vadjustment, value);
 998         }
 999
1000         adjustment = view->hadjustment;
1001
1002         if (rect->x < adjustment->value) {
1003                 value = MAX (adjustment->lower, rect->x - MARGIN);
1004                 gtk_adjustment_set_value (view->hadjustment, value);
1005         } else if (rect->x + rect->height >
1006                    adjustment->value + widget->allocation.width) {
1007                 value = MIN (adjustment->upper, rect->x + rect->width -
1008                              widget->allocation.width + MARGIN);
1009                 gtk_adjustment_set_value (view->hadjustment, value);
1010         }
1011
1012         gtk_widget_queue_resize (GTK_WIDGET (view));
1013 }
1014
1015 /*** Geometry computations ***/
1016
1017 static void
1018 compute_border (EvView *view, int width, int height, GtkBorder *border)
1019 {
1020         if (view->presentation) {
1021                 border->left = 0;
1022                 border->right = 0;
1023                 border->top = 0;
1024                 border->bottom = 0;
1025         } else {
1026                 ev_document_misc_get_page_border_size (width, height, border);
1027         }
1028 }
1029
1030 void
1031 _get_page_size_for_scale_and_rotation (EvDocument *document,
1032                                        gint        page,
1033                                        gdouble     scale,
1034                                        gint        rotation,
1035                                        gint       *page_width,
1036                                        gint       *page_height)
1037 {
1038         gdouble w, h;
1039         gint    width, height;
1040
1041         ev_document_get_page_size (document, page, &w, &h);
1042
1043         width = (gint)(w * scale + 0.5);
1044         height = (gint)(h * scale + 0.5);
1045
1046         if (page_width)
1047                 *page_width = (rotation == 0 || rotation == 180) ? width : height;
1048         if (page_height)
1049                 *page_height = (rotation == 0 || rotation == 180) ? height : width;
1050 }
1051
1052 static void
1053 ev_view_get_page_size (EvView *view,
1054                        gint    page,
1055                        gint   *page_width,
1056                        gint   *page_height)
1057 {
1058         _get_page_size_for_scale_and_rotation (view->document,
1059                                                page,
1060                                                view->scale,
1061                                                view->rotation,
1062                                                page_width,
1063                                                page_height);
1064 }
1065
1066 static void
1067 ev_view_get_max_page_size (EvView *view,
1068                            gint   *max_width,
1069                            gint   *max_height)
1070 {
1071         double w, h;
1072         gint   width, height;
1073
1074         ev_document_get_max_page_size (view->document, &w, &h);
1075
1076         width = (gint)(w * view->scale + 0.5);
1077         height = (gint)(h * view->scale + 0.5);
1078
1079         if (max_width)
1080                 *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
1081         if (max_height)
1082                 *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
1083 }
1084
1085 static void
1086 get_page_y_offset (EvView *view, int page, int *y_offset)
1087 {
1088         int max_width, offset;
1089         GtkBorder border;
1090
1091         g_return_if_fail (y_offset != NULL);
1092
1093         ev_view_get_max_page_size (view, &max_width, NULL);
1094         compute_border (view, max_width, max_width, &border);
1095
1096         if (view->dual_page) {
1097                 ev_view_get_height_to_page (view, page, NULL, &offset);
1098                 offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
1099                         ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
1100         } else {
1101                 ev_view_get_height_to_page (view, page, &offset, NULL);
1102                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
1103         }
1104
1105         *y_offset = offset;
1106         return;
1107 }
1108
1109 static gboolean
1110 get_page_extents (EvView       *view,
1111                   gint          page,
1112                   GdkRectangle *page_area,
1113                   GtkBorder    *border)
1114 {
1115         GtkWidget *widget;
1116         int width, height;
1117
1118         widget = GTK_WIDGET (view);
1119
1120         /* Get the size of the page */
1121         ev_view_get_page_size (view, page, &width, &height);
1122         compute_border (view, width, height, border);
1123         page_area->width = width + border->left + border->right;
1124         page_area->height = height + border->top + border->bottom;
1125
1126         if (view->presentation) {
1127                 page_area->x = (MAX (0, widget->allocation.width - width))/2;
1128                 page_area->y = (MAX (0, widget->allocation.height - height))/2;
1129         } else if (view->continuous) {
1130                 gint max_width;
1131                 gint x, y;
1132
1133                 ev_view_get_max_page_size (view, &max_width, NULL);
1134                 max_width = max_width + border->left + border->right;
1135                 /* Get the location of the bounding box */
1136                 if (view->dual_page) {
1137                         x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
1138                         x = x + MAX (0, widget->allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
1139                         if (page % 2 == get_dual_even_left (view))
1140                                 x = x + (max_width - width - border->left - border->right);
1141                 } else {
1142                         x = view->spacing;
1143                         x = x + MAX (0, widget->allocation.width - (width + view->spacing * 2)) / 2;
1144                 }
1145
1146                 get_page_y_offset (view, page, &y);
1147
1148                 page_area->x = x;
1149                 page_area->y = y;
1150         } else {
1151                 gint x, y;
1152                 if (view->dual_page) {
1153                         gint width_2, height_2;
1154                         gint max_width = width;
1155                         gint max_height = height;
1156                         GtkBorder overall_border;
1157                         gint other_page;
1158
1159                         other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1;
1160
1161                         /* First, we get the bounding box of the two pages */
1162                         if (other_page < ev_document_get_n_pages (view->document)
1163                             && (0 <= other_page)) {
1164                                 ev_view_get_page_size (view, other_page,
1165                                                        &width_2, &height_2);
1166                                 if (width_2 > width)
1167                                         max_width = width_2;
1168                                 if (height_2 > height)
1169                                         max_height = height_2;
1170                         }
1171                         compute_border (view, max_width, max_height, &overall_border);
1172
1173                         /* Find the offsets */
1174                         x = view->spacing;
1175                         y = view->spacing;
1176
1177                         /* Adjust for being the left or right page */
1178                         if (page % 2 == get_dual_even_left (view))
1179                                 x = x + max_width - width;
1180                         else
1181                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
1182
1183                         y = y + (max_height - height)/2;
1184
1185                         /* Adjust for extra allocation */
1186                         x = x + MAX (0, widget->allocation.width -
1187                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
1188                         y = y + MAX (0, widget->allocation.height - (height + view->spacing * 2))/2;
1189                 } else {
1190                         x = view->spacing;
1191                         y = view->spacing;
1192
1193                         /* Adjust for extra allocation */
1194                         x = x + MAX (0, widget->allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
1195                         y = y + MAX (0, widget->allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
1196                 }
1197
1198                 page_area->x = x;
1199                 page_area->y = y;
1200         }
1201
1202         return TRUE;
1203 }
1204
1205 static void
1206 get_doc_page_size (EvView  *view,
1207                    gint     page,
1208                    gdouble *width,
1209                    gdouble *height)
1210 {
1211         double w, h;
1212
1213         ev_document_get_page_size (view->document, page, &w, &h);
1214         if (view->rotation == 0 || view->rotation == 180) {
1215                 if (width) *width = w;
1216                 if (height) *height = h;
1217         } else {
1218                 if (width) *width = h;
1219                 if (height) *height = w;
1220         }
1221 }
1222
1223 static void
1224 view_point_to_doc_point (EvView *view,
1225                          GdkPoint *view_point,
1226                          GdkRectangle *page_area,
1227                          double  *doc_point_x,
1228                          double  *doc_point_y)
1229 {
1230         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
1231         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
1232 }
1233
1234 static void
1235 view_rect_to_doc_rect (EvView *view,
1236                        GdkRectangle *view_rect,
1237                        GdkRectangle *page_area,
1238                        EvRectangle  *doc_rect)
1239 {
1240         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
1241         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
1242         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
1243         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
1244 }
1245
1246 static void
1247 doc_point_to_view_point (EvView       *view,
1248                          int           page,
1249                          EvPoint      *doc_point,
1250                          GdkPoint     *view_point)
1251 {
1252         GdkRectangle page_area;
1253         GtkBorder border;
1254         double x, y, view_x, view_y;
1255         gdouble width, height;
1256
1257         get_doc_page_size (view, page, &width, &height);
1258
1259         if (view->rotation == 0) {
1260                 x = doc_point->x;
1261                 y = doc_point->y;
1262         } else if (view->rotation == 90) {
1263                 x = width - doc_point->y;
1264                 y = doc_point->x;
1265         } else if (view->rotation == 180) {
1266                 x = width - doc_point->x;
1267                 y = height - doc_point->y;
1268         } else if (view->rotation == 270) {
1269                 x = doc_point->y;
1270                 y = height - doc_point->x;
1271         } else {
1272                 g_assert_not_reached ();
1273         }
1274
1275         get_page_extents (view, page, &page_area, &border);
1276
1277         view_x = CLAMP (x * view->scale, 0, page_area.width);
1278         view_y = CLAMP (y * view->scale, 0, page_area.height);
1279         view_point->x = view_x + page_area.x;
1280         view_point->y = view_y + page_area.y;
1281 }
1282
1283 static void
1284 doc_rect_to_view_rect (EvView       *view,
1285                        int           page,
1286                        EvRectangle  *doc_rect,
1287                        GdkRectangle *view_rect)
1288 {
1289         GdkRectangle page_area;
1290         GtkBorder border;
1291         double x, y, w, h;
1292         gdouble width, height;
1293
1294         get_doc_page_size (view, page, &width, &height);
1295
1296         if (view->rotation == 0) {
1297                 x = doc_rect->x1;
1298                 y = doc_rect->y1;
1299                 w = doc_rect->x2 - doc_rect->x1;
1300                 h = doc_rect->y2 - doc_rect->y1;
1301         } else if (view->rotation == 90) {
1302                 x = width - doc_rect->y2;
1303                 y = doc_rect->x1;
1304                 w = doc_rect->y2 - doc_rect->y1;
1305                 h = doc_rect->x2 - doc_rect->x1;
1306         } else if (view->rotation == 180) {
1307                 x = width - doc_rect->x2;
1308                 y = height - doc_rect->y2;
1309                 w = doc_rect->x2 - doc_rect->x1;
1310                 h = doc_rect->y2 - doc_rect->y1;
1311         } else if (view->rotation == 270) {
1312                 x = doc_rect->y1;
1313                 y = height - doc_rect->x2;
1314                 w = doc_rect->y2 - doc_rect->y1;
1315                 h = doc_rect->x2 - doc_rect->x1;
1316         } else {
1317                 g_assert_not_reached ();
1318         }
1319
1320         get_page_extents (view, page, &page_area, &border);
1321
1322         view_rect->x = x * view->scale + page_area.x;
1323         view_rect->y = y * view->scale + page_area.y;
1324         view_rect->width = w * view->scale;
1325         view_rect->height = h * view->scale;
1326 }
1327
1328 static gboolean
1329 get_dual_even_left (EvView *view)
1330 {
1331         return (ev_document_get_n_pages (view->document) > 2);
1332 }
1333
1334 static void
1335 find_page_at_location (EvView  *view,
1336                        gdouble  x,
1337                        gdouble  y,
1338                        gint    *page,
1339                        gint    *x_offset,
1340                        gint    *y_offset)
1341 {
1342         int i;
1343
1344         if (view->document == NULL)
1345                 return;
1346
1347         g_assert (page);
1348         g_assert (x_offset);
1349         g_assert (y_offset);
1350
1351         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
1352                 GdkRectangle page_area;
1353                 GtkBorder border;
1354
1355                 if (! get_page_extents (view, i, &page_area, &border))
1356                         continue;
1357
1358                 if ((x >= page_area.x + border.left) &&
1359                     (x < page_area.x + page_area.width - border.right) &&
1360                     (y >= page_area.y + border.top) &&
1361                     (y < page_area.y + page_area.height - border.bottom)) {
1362                         *page = i;
1363                         *x_offset = x - (page_area.x + border.left);
1364                         *y_offset = y - (page_area.y + border.top);
1365                         return;
1366                 }
1367         }
1368
1369         *page = -1;
1370 }
1371
1372 static gboolean
1373 location_in_text (EvView  *view,
1374                   gdouble  x,
1375                   gdouble  y)
1376 {
1377         GdkRegion *region;
1378         gint page = -1;
1379         gint x_offset = 0, y_offset = 0;
1380
1381         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1382
1383         if (page == -1)
1384                 return FALSE;
1385
1386         region = ev_page_cache_get_text_mapping (view->page_cache, page);
1387
1388         if (region)
1389                 return gdk_region_point_in (region, x_offset / view->scale, y_offset / view->scale);
1390         else
1391                 return FALSE;
1392 }
1393
1394 static int
1395 ev_view_get_width (EvView *view)
1396 {
1397         return GTK_WIDGET (view)->allocation.width;
1398 }
1399
1400 static int
1401 ev_view_get_height (EvView *view)
1402 {
1403         return GTK_WIDGET (view)->allocation.height;
1404 }
1405
1406 static gboolean
1407 location_in_selected_text (EvView  *view,
1408                            gdouble  x,
1409                            gdouble  y)
1410 {
1411         gint page = -1;
1412         gint x_offset = 0, y_offset = 0;
1413         EvViewSelection *selection;
1414         GList *l = NULL;
1415
1416         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1417                 selection = (EvViewSelection *)l->data;
1418
1419                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1420
1421                 if (page != selection->page)
1422                         continue;
1423
1424                 if (selection->covered_region &&
1425                     gdk_region_point_in (selection->covered_region, x_offset, y_offset))
1426                         return TRUE;
1427         }
1428
1429         return FALSE;
1430 }
1431
1432 static gboolean
1433 get_doc_point_from_offset (EvView *view,
1434                            gint    page,
1435                            gint    x_offset,
1436                            gint    y_offset,
1437                            gint   *x_new,
1438                            gint   *y_new)
1439 {
1440         gdouble width, height;
1441         double x, y;
1442
1443         get_doc_page_size (view, page, &width, &height);
1444
1445         x_offset = x_offset / view->scale;
1446         y_offset = y_offset / view->scale;
1447
1448         if (view->rotation == 0) {
1449                 x = x_offset;
1450                 y = y_offset;
1451         } else if (view->rotation == 90) {
1452                 x = y_offset;
1453                 y = width - x_offset;
1454         } else if (view->rotation == 180) {
1455                 x = width - x_offset;
1456                 y = height - y_offset;
1457         } else if (view->rotation == 270) {
1458                 x = height - y_offset;
1459                 y = x_offset;
1460         } else {
1461                 g_assert_not_reached ();
1462         }
1463
1464         *x_new = x;
1465         *y_new = y;
1466
1467         return TRUE;
1468 }
1469
1470 static gboolean
1471 get_doc_point_from_location (EvView  *view,
1472                              gdouble  x,
1473                              gdouble  y,
1474                              gint    *page,
1475                              gint    *x_new,
1476                              gint    *y_new)
1477 {
1478         gint x_offset = 0, y_offset = 0;
1479
1480         x += view->scroll_x;
1481         y += view->scroll_y;
1482         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1483         if (*page == -1)
1484                 return FALSE;
1485
1486         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1487 }
1488
1489 static void
1490 ev_view_get_area_from_mapping (EvView       *view,
1491                                guint         page,
1492                                GList        *mapping_list,
1493                                gconstpointer data,
1494                                GdkRectangle *area)
1495 {
1496         EvMapping *mapping;
1497
1498         mapping = ev_mapping_list_find (mapping_list, data);
1499         doc_rect_to_view_rect (view, page, &mapping->area, area);
1500         area->x -= view->scroll_x;
1501         area->y -= view->scroll_y;
1502 }
1503
1504
1505 /*** Hyperref ***/
1506 static EvLink *
1507 ev_view_get_link_at_location (EvView  *view,
1508                               gdouble  x,
1509                               gdouble  y)
1510 {
1511         gint page = -1;
1512         gint x_new = 0, y_new = 0;
1513         GList *link_mapping;
1514
1515         if (!EV_IS_DOCUMENT_LINKS (view->document))
1516                 return NULL;
1517
1518         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1519                 return NULL;
1520
1521         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
1522
1523         if (link_mapping)
1524                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1525         else
1526                 return NULL;
1527 }
1528
1529 static void
1530 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1531 {
1532         EvPoint doc_point;
1533         gdouble zoom, left, top;
1534         gboolean change_left, change_top;
1535
1536         left = ev_link_dest_get_left (dest, &change_left);
1537         top = ev_link_dest_get_top (dest, &change_top);
1538
1539         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1540                                        ev_link_dest_get_bottom (dest) - top,
1541                                        ev_view_get_width (view),
1542                                        ev_view_get_height (view));
1543
1544         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1545         ev_document_model_set_scale (view->model, zoom);
1546
1547         doc_point.x = change_left ? left : 0;
1548         doc_point.y = change_top ? top : 0;
1549         view->pending_point = doc_point;
1550
1551         ev_view_change_page (view, ev_link_dest_get_page (dest), TRUE);
1552 }
1553
1554 static void
1555 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1556 {
1557         EvPoint doc_point;
1558         gdouble doc_width, doc_height;
1559         gint page;
1560         double zoom, left;
1561         gboolean change_left;
1562
1563         page = ev_link_dest_get_page (dest);
1564         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1565
1566         left = ev_link_dest_get_left (dest, &change_left);
1567         doc_point.x = change_left ? left : 0;
1568         doc_point.y = 0;
1569
1570         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1571                                          ev_view_get_width (view),
1572                                          ev_view_get_height (view));
1573
1574         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1575         ev_document_model_set_scale (view->model, zoom);
1576
1577         view->pending_point = doc_point;
1578
1579         ev_view_change_page (view, page, TRUE);
1580 }
1581
1582 static void
1583 goto_fith_dest (EvView *view, EvLinkDest *dest)
1584 {
1585         EvPoint doc_point;
1586         gdouble doc_width, doc_height;
1587         gint page;
1588         gdouble zoom, top;
1589         gboolean change_top;
1590
1591         page = ev_link_dest_get_page (dest);
1592         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1593
1594         top = ev_link_dest_get_top (dest, &change_top);
1595
1596         doc_point.x = 0;
1597         doc_point.y = change_top ? top : 0;
1598
1599         zoom = zoom_for_size_fit_width (doc_width, top,
1600                                         ev_view_get_width (view),
1601                                         ev_view_get_height (view));
1602
1603         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH);
1604         ev_document_model_set_scale (view->model, zoom);
1605
1606         view->pending_point = doc_point;
1607
1608         ev_view_change_page (view, page, TRUE);
1609 }
1610
1611 static void
1612 goto_fit_dest (EvView *view, EvLinkDest *dest)
1613 {
1614         double zoom;
1615         gdouble doc_width, doc_height;
1616         int page;
1617
1618         page = ev_link_dest_get_page (dest);
1619         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1620
1621         zoom = zoom_for_size_best_fit (doc_width, doc_height,
1622                                        ev_view_get_width (view),
1623                                        ev_view_get_height (view));
1624
1625         ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
1626         ev_document_model_set_scale (view->model, zoom);
1627
1628         ev_view_change_page (view, page, TRUE);
1629 }
1630
1631 static void
1632 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1633 {
1634         EvPoint doc_point;
1635         gint page;
1636         gdouble zoom, left, top;
1637         gboolean change_zoom, change_left, change_top;
1638
1639         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1640         page = ev_link_dest_get_page (dest);
1641
1642         if (change_zoom && zoom > 1) {
1643                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1644                 ev_document_model_set_scale (view->model, zoom);
1645         }
1646
1647         left = ev_link_dest_get_left (dest, &change_left);
1648         top = ev_link_dest_get_top (dest, &change_top);
1649
1650         doc_point.x = change_left ? left : 0;
1651         doc_point.y = change_top ? top : 0;
1652         view->pending_point = doc_point;
1653
1654         ev_view_change_page (view, page, TRUE);
1655 }
1656
1657 static void
1658 goto_dest (EvView *view, EvLinkDest *dest)
1659 {
1660         EvLinkDestType type;
1661         int page, n_pages, current_page;
1662
1663         page = ev_link_dest_get_page (dest);
1664         n_pages = ev_document_get_n_pages (view->document);
1665
1666         if (page < 0 || page >= n_pages)
1667                 return;
1668
1669         current_page = view->current_page;
1670
1671         type = ev_link_dest_get_dest_type (dest);
1672
1673         switch (type) {
1674                 case EV_LINK_DEST_TYPE_PAGE:
1675                         ev_document_model_set_page (view->model, page);
1676                         break;
1677                 case EV_LINK_DEST_TYPE_FIT:
1678                         goto_fit_dest (view, dest);
1679                         break;
1680                 case EV_LINK_DEST_TYPE_FITH:
1681                         goto_fith_dest (view, dest);
1682                         break;
1683                 case EV_LINK_DEST_TYPE_FITV:
1684                         goto_fitv_dest (view, dest);
1685                         break;
1686                 case EV_LINK_DEST_TYPE_FITR:
1687                         goto_fitr_dest (view, dest);
1688                         break;
1689                 case EV_LINK_DEST_TYPE_XYZ:
1690                         goto_xyz_dest (view, dest);
1691                         break;
1692                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1693                         ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest));
1694                         break;
1695                 default:
1696                         g_assert_not_reached ();
1697         }
1698
1699         if (current_page != view->current_page)
1700                 ev_document_model_set_page (view->model, view->current_page);
1701 }
1702
1703 static void
1704 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1705 {
1706         EvLinkDestType type;
1707
1708         type = ev_link_dest_get_dest_type (dest);
1709
1710         if (type == EV_LINK_DEST_TYPE_NAMED) {
1711                 EvLinkDest  *dest2;
1712                 const gchar *named_dest;
1713
1714                 named_dest = ev_link_dest_get_named_dest (dest);
1715                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1716                                                           named_dest);
1717                 if (dest2) {
1718                         goto_dest (view, dest2);
1719                         g_object_unref (dest2);
1720                 }
1721
1722                 return;
1723         }
1724
1725         goto_dest (view, dest);
1726 }
1727
1728 void
1729 ev_view_handle_link (EvView *view, EvLink *link)
1730 {
1731         EvLinkAction    *action = NULL;
1732         EvLinkActionType type;
1733
1734         action = ev_link_get_action (link);
1735         if (!action)
1736                 return;
1737
1738         type = ev_link_action_get_action_type (action);
1739
1740         switch (type) {
1741                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1742                         EvLinkDest *dest;
1743
1744                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1745
1746                         dest = ev_link_action_get_dest (action);
1747                         ev_view_goto_dest (view, dest);
1748                 }
1749                         break;
1750                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1751                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1752                 case EV_LINK_ACTION_TYPE_LAUNCH:
1753                 case EV_LINK_ACTION_TYPE_NAMED:
1754                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1755                         break;
1756         }
1757 }
1758
1759 gchar *
1760 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1761 {
1762         EvLinkDestType type;
1763         gchar *msg = NULL;
1764
1765         type = ev_link_dest_get_dest_type (dest);
1766
1767         switch (type) {
1768                 case EV_LINK_DEST_TYPE_NAMED: {
1769                         EvLinkDest  *dest2;
1770                         const gchar *named_dest;
1771
1772                         named_dest = ev_link_dest_get_named_dest (dest);
1773                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1774                                                                   named_dest);
1775                         if (dest2) {
1776                                 msg = ev_document_get_page_label (view->document,
1777                                                                   ev_link_dest_get_page (dest2));
1778                                 g_object_unref (dest2);
1779                         }
1780                 }
1781
1782                         break;
1783                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1784                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1785                 }
1786                         break;
1787                 default:
1788                         msg = ev_document_get_page_label (view->document,
1789                                                           ev_link_dest_get_page (dest));
1790         }
1791
1792         return msg;
1793 }
1794
1795 static char *
1796 tip_from_action_named (EvLinkAction *action)
1797 {
1798         const gchar *name = ev_link_action_get_name (action);
1799
1800         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1801                 return g_strdup (_("Go to first page"));
1802         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1803                 return g_strdup (_("Go to previous page"));
1804         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1805                 return g_strdup (_("Go to next page"));
1806         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1807                 return g_strdup (_("Go to last page"));
1808         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1809                 return g_strdup (_("Go to page"));
1810         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1811                 return g_strdup (_("Find"));
1812         }
1813
1814         return NULL;
1815 }
1816
1817 static char *
1818 tip_from_link (EvView *view, EvLink *link)
1819 {
1820         EvLinkAction *action;
1821         EvLinkActionType type;
1822         char *msg = NULL;
1823         char *page_label;
1824         const char *title;
1825
1826         action = ev_link_get_action (link);
1827         title = ev_link_get_title (link);
1828
1829         if (!action)
1830                 return title ? g_strdup (title) : NULL;
1831
1832         type = ev_link_action_get_action_type (action);
1833
1834         switch (type) {
1835                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1836                         page_label = ev_view_page_label_from_dest (view,
1837                                                                    ev_link_action_get_dest (action));
1838                         if (page_label) {
1839                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1840                                 g_free (page_label);
1841                         }
1842                         break;
1843                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1844                         if (title) {
1845                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1846                                                        ev_link_action_get_filename (action));
1847                         } else {
1848                                 msg = g_strdup_printf (_("Go to file “%s”"),
1849                                                        ev_link_action_get_filename (action));
1850                         }
1851                         break;
1852                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1853                         msg = g_strdup (ev_link_action_get_uri (action));
1854                         break;
1855                 case EV_LINK_ACTION_TYPE_LAUNCH:
1856                         msg = g_strdup_printf (_("Launch %s"),
1857                                                ev_link_action_get_filename (action));
1858                         break;
1859                 case EV_LINK_ACTION_TYPE_NAMED:
1860                         msg = tip_from_action_named (action);
1861                         break;
1862                 default:
1863                         if (title)
1864                                 msg = g_strdup (title);
1865                         break;
1866         }
1867
1868         return msg;
1869 }
1870
1871 static void
1872 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1873 {
1874         EvLink       *link;
1875         EvFormField  *field;
1876         EvAnnotation *annot = NULL;
1877
1878         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1879                 return;
1880
1881         if (view->drag_info.in_drag) {
1882                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1883                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1884                 return;
1885         }
1886
1887         if (view->scroll_info.autoscrolling) {
1888                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1889                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1890                 return;
1891         }
1892
1893         link = ev_view_get_link_at_location (view, x, y);
1894         if (link) {
1895                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1896         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1897                 if (field->is_read_only) {
1898                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1899                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1900                             view->cursor == EV_VIEW_CURSOR_DRAG)
1901                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1902                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1903                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1904                 } else {
1905                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1906                 }
1907         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1908                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1909         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1910                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1911         } else {
1912                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1913                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1914                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1915                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1916                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1917         }
1918
1919         if (link || annot)
1920                 g_object_set (view, "has-tooltip", TRUE, NULL);
1921 }
1922
1923 /*** Images ***/
1924 static EvImage *
1925 ev_view_get_image_at_location (EvView  *view,
1926                                gdouble  x,
1927                                gdouble  y)
1928 {
1929         gint page = -1;
1930         gint x_new = 0, y_new = 0;
1931         GList *image_mapping;
1932
1933         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1934                 return NULL;
1935
1936         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1937                 return NULL;
1938
1939         image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page);
1940
1941         if (image_mapping)
1942                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1943         else
1944                 return NULL;
1945 }
1946
1947 /*** Forms ***/
1948 static EvFormField *
1949 ev_view_get_form_field_at_location (EvView  *view,
1950                                     gdouble  x,
1951                                     gdouble  y)
1952 {
1953         gint page = -1;
1954         gint x_new = 0, y_new = 0;
1955         GList *forms_mapping;
1956
1957         if (!EV_IS_DOCUMENT_FORMS (view->document))
1958                 return NULL;
1959
1960         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1961                 return NULL;
1962
1963         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, page);
1964
1965         if (forms_mapping)
1966                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1967         else
1968                 return NULL;
1969 }
1970
1971 static GdkRegion *
1972 ev_view_form_field_get_region (EvView      *view,
1973                                EvFormField *field)
1974 {
1975         GdkRectangle view_area;
1976         GList       *forms_mapping;
1977
1978         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
1979                                                               field->page->index);
1980         ev_view_get_area_from_mapping (view, field->page->index,
1981                                        forms_mapping,
1982                                        field, &view_area);
1983
1984         return gdk_region_rectangle (&view_area);
1985 }
1986
1987 static gboolean
1988 ev_view_forms_remove_widgets (EvView *view)
1989 {
1990         ev_view_remove_all (view);
1991
1992         return FALSE;
1993 }
1994
1995 static void
1996 ev_view_form_field_destroy (GtkWidget *widget,
1997                             EvView    *view)
1998 {
1999         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
2000 }
2001
2002 static GtkWidget *
2003 ev_view_form_field_button_create_widget (EvView      *view,
2004                                          EvFormField *field)
2005 {
2006         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
2007         GdkRegion         *field_region = NULL;
2008
2009         switch (field_button->type) {
2010                 case EV_FORM_FIELD_BUTTON_PUSH:
2011                         return NULL;
2012                 case EV_FORM_FIELD_BUTTON_CHECK:
2013                 case EV_FORM_FIELD_BUTTON_RADIO: {
2014                         gboolean  state;
2015                         GList    *forms_mapping, *l;
2016
2017                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
2018                                                                                field);
2019
2020                         /* FIXME: it actually depends on NoToggleToOff flags */
2021                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
2022                             state && field_button->state)
2023                                 return NULL;
2024
2025                         field_region = ev_view_form_field_get_region (view, field);
2026
2027                         /* For radio buttons and checkbox buttons that are in a set
2028                          * we need to update also the region for the current selected item
2029                          */
2030                         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2031                                                                               field->page->index);
2032                         for (l = forms_mapping; l; l = g_list_next (l)) {
2033                                 EvFormField *button = ((EvMapping *)(l->data))->data;
2034                                 GdkRegion   *button_region;
2035
2036                                 if (button->id == field->id)
2037                                         continue;
2038
2039                                 /* FIXME: only buttons in the same group should be updated */
2040                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
2041                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
2042                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
2043                                         continue;
2044
2045                                 button_region = ev_view_form_field_get_region (view, button);
2046                                 gdk_region_union (field_region, button_region);
2047                                 gdk_region_destroy (button_region);
2048                         }
2049
2050                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
2051                                                                        field, !state);
2052                         field_button->state = !state;
2053                 }
2054                         break;
2055         }
2056
2057         ev_view_reload_page (view, field->page->index, field_region);
2058         gdk_region_destroy (field_region);
2059
2060         return NULL;
2061 }
2062
2063 static void
2064 ev_view_form_field_text_save (EvView    *view,
2065                               GtkWidget *widget)
2066 {
2067         EvFormField *field;
2068
2069         if (!view->document)
2070                 return;
2071
2072         field = g_object_get_data (G_OBJECT (widget), "form-field");
2073
2074         if (field->changed) {
2075                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2076                 GdkRegion       *field_region;
2077
2078                 field_region = ev_view_form_field_get_region (view, field);
2079
2080                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
2081                                                             field, field_text->text);
2082                 field->changed = FALSE;
2083                 ev_view_reload_page (view, field->page->index, field_region);
2084                 gdk_region_destroy (field_region);
2085         }
2086 }
2087
2088 static void
2089 ev_view_form_field_text_changed (GtkWidget   *widget,
2090                                  EvFormField *field)
2091 {
2092         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2093         gchar           *text = NULL;
2094
2095         if (GTK_IS_ENTRY (widget)) {
2096                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
2097         } else if (GTK_IS_TEXT_BUFFER (widget)) {
2098                 GtkTextIter start, end;
2099
2100                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
2101                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
2102                                                  &start, &end, FALSE);
2103         }
2104
2105         if (!field_text->text ||
2106             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2107                 g_free (field_text->text);
2108                 field_text->text = text;
2109                 field->changed = TRUE;
2110         }
2111 }
2112
2113 static GtkWidget *
2114 ev_view_form_field_text_create_widget (EvView      *view,
2115                                        EvFormField *field)
2116 {
2117         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2118         GtkWidget       *text = NULL;
2119         gchar           *txt;
2120
2121         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2122                                                           field);
2123
2124         switch (field_text->type) {
2125                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2126                         /* TODO */
2127                 case EV_FORM_FIELD_TEXT_NORMAL:
2128                         text = gtk_entry_new ();
2129                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2130                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2131                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2132
2133                         if (txt) {
2134                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2135                                 g_free (txt);
2136                         }
2137
2138                         g_signal_connect (text, "changed",
2139                                           G_CALLBACK (ev_view_form_field_text_changed),
2140                                           field);
2141                         g_signal_connect_after (text, "activate",
2142                                                 G_CALLBACK (ev_view_form_field_destroy),
2143                                                 view);
2144                         break;
2145                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2146                         GtkTextBuffer *buffer;
2147
2148                         text = gtk_text_view_new ();
2149                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2150
2151                         if (txt) {
2152                                 gtk_text_buffer_set_text (buffer, txt, -1);
2153                                 g_free (txt);
2154                         }
2155
2156                         g_signal_connect (buffer, "changed",
2157                                           G_CALLBACK (ev_view_form_field_text_changed),
2158                                           field);
2159                 }
2160                         break;
2161         }
2162
2163         g_object_weak_ref (G_OBJECT (text),
2164                            (GWeakNotify)ev_view_form_field_text_save,
2165                            view);
2166
2167         return text;
2168 }
2169
2170 static void
2171 ev_view_form_field_choice_save (EvView    *view,
2172                                 GtkWidget *widget)
2173 {
2174         EvFormField *field;
2175
2176         if (!view->document)
2177                 return;
2178
2179         field = g_object_get_data (G_OBJECT (widget), "form-field");
2180
2181         if (field->changed) {
2182                 GList             *l;
2183                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2184                 GdkRegion         *field_region;
2185
2186                 field_region = ev_view_form_field_get_region (view, field);
2187
2188                 if (field_choice->is_editable) {
2189                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2190                                                                       field, field_choice->text);
2191                 } else {
2192                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2193                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2194                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2195                                                                                  field,
2196                                                                                  GPOINTER_TO_INT (l->data));
2197                         }
2198                 }
2199                 field->changed = FALSE;
2200                 ev_view_reload_page (view, field->page->index, field_region);
2201                 gdk_region_destroy (field_region);
2202         }
2203 }
2204
2205 static void
2206 ev_view_form_field_choice_changed (GtkWidget   *widget,
2207                                    EvFormField *field)
2208 {
2209         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2210
2211         if (GTK_IS_COMBO_BOX (widget)) {
2212                 gint item;
2213
2214                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2215                 if (!field_choice->selected_items ||
2216                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2217                         g_list_free (field_choice->selected_items);
2218                         field_choice->selected_items = NULL;
2219                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2220                                                                        GINT_TO_POINTER (item));
2221                         field->changed = TRUE;
2222                 }
2223
2224                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2225                         gchar *text;
2226
2227                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2228                         if (!field_choice->text ||
2229                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2230                                 g_free (field_choice->text);
2231                                 field_choice->text = text;
2232                                 field->changed = TRUE;
2233                         }
2234                 }
2235         } else if (GTK_IS_TREE_SELECTION (widget)) {
2236                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2237                 GtkTreeModel     *model;
2238                 GList            *items, *l;
2239
2240                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2241                 g_list_free (field_choice->selected_items);
2242                 field_choice->selected_items = NULL;
2243
2244                 for (l = items; l && l->data; l = g_list_next (l)) {
2245                         GtkTreeIter  iter;
2246                         GtkTreePath *path = (GtkTreePath *)l->data;
2247                         gint         item;
2248
2249                         gtk_tree_model_get_iter (model, &iter, path);
2250                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2251
2252                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2253                                                                        GINT_TO_POINTER (item));
2254
2255                         gtk_tree_path_free (path);
2256                 }
2257
2258                 g_list_free (items);
2259
2260                 field->changed = TRUE;
2261         }
2262 }
2263
2264 static GtkWidget *
2265 ev_view_form_field_choice_create_widget (EvView      *view,
2266                                          EvFormField *field)
2267 {
2268         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2269         GtkWidget         *choice;
2270         GtkTreeModel      *model;
2271         gint               n_items, i;
2272         gint               selected_item = 0;
2273
2274         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2275                                                                    field);
2276         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2277         for (i = 0; i < n_items; i++) {
2278                 GtkTreeIter iter;
2279                 gchar      *item;
2280
2281                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2282                                                                      field, i);
2283                 if (ev_document_forms_form_field_choice_is_item_selected (
2284                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2285                         selected_item = i;
2286                         /* FIXME: we need a get_selected_items function in poppler */
2287                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2288                                                                        GINT_TO_POINTER (i));
2289                 }
2290
2291                 if (item) {
2292                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2293                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2294                                             0, item,
2295                                             1, i,
2296                                             -1);
2297                         g_free (item);
2298                 }
2299         }
2300
2301         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2302                 GtkCellRenderer  *renderer;
2303                 GtkWidget        *tree_view;
2304                 GtkTreeSelection *selection;
2305
2306                 tree_view = gtk_tree_view_new_with_model (model);
2307                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2308
2309                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2310                 if (field_choice->multi_select) {
2311                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2312                 }
2313
2314                 /* TODO: set selected items */
2315
2316                 renderer = gtk_cell_renderer_text_new ();
2317                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2318                                                              0,
2319                                                              "choix", renderer,
2320                                                              "text", 0,
2321                                                              NULL);
2322
2323                 choice = gtk_scrolled_window_new (NULL, NULL);
2324                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2325                                                 GTK_POLICY_AUTOMATIC,
2326                                                 GTK_POLICY_AUTOMATIC);
2327                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2328                 gtk_widget_show (tree_view);
2329
2330                 g_signal_connect (selection, "changed",
2331                                   G_CALLBACK (ev_view_form_field_choice_changed),
2332                                   field);
2333                 g_signal_connect_after (selection, "changed",
2334                                         G_CALLBACK (ev_view_form_field_destroy),
2335                                         view);
2336         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2337                 gchar *text;
2338
2339                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2340                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2341                 if (text) {
2342                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2343                         g_free (text);
2344                 }
2345
2346                 g_signal_connect (choice, "changed",
2347                                   G_CALLBACK (ev_view_form_field_choice_changed),
2348                                   field);
2349                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2350                                         G_CALLBACK (ev_view_form_field_destroy),
2351                                         view);
2352         } else { /* ComboBoxText */
2353                 GtkCellRenderer *renderer;
2354
2355                 choice = gtk_combo_box_new_with_model (model);
2356                 renderer = gtk_cell_renderer_text_new ();
2357                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2358                                             renderer, TRUE);
2359                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2360                                                 renderer,
2361                                                 "text", 0,
2362                                                 NULL);
2363                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2364                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2365
2366                 g_signal_connect (choice, "changed",
2367                                   G_CALLBACK (ev_view_form_field_choice_changed),
2368                                   field);
2369                 g_signal_connect_after (choice, "changed",
2370                                         G_CALLBACK (ev_view_form_field_destroy),
2371                                         view);
2372         }
2373
2374         g_object_unref (model);
2375
2376         g_object_weak_ref (G_OBJECT (choice),
2377                            (GWeakNotify)ev_view_form_field_choice_save,
2378                            view);
2379
2380         return choice;
2381 }
2382
2383 static void
2384 ev_view_handle_form_field (EvView      *view,
2385                            EvFormField *field,
2386                            gdouble      x,
2387                            gdouble      y)
2388 {
2389         GtkWidget   *field_widget = NULL;
2390         GList       *form_field_mapping;
2391         GdkRectangle view_area;
2392
2393         if (field->is_read_only)
2394                 return;
2395
2396         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2397                 field_widget = ev_view_form_field_button_create_widget (view, field);
2398         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2399                 field_widget = ev_view_form_field_text_create_widget (view, field);
2400         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2401                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2402         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2403                 /* TODO */
2404         }
2405
2406         /* Form field doesn't require a widget */
2407         if (!field_widget)
2408                 return;
2409
2410         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2411                                 g_object_ref (field),
2412                                 (GDestroyNotify)g_object_unref);
2413
2414         form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2415                                                                    field->page->index);
2416         ev_view_get_area_from_mapping (view, field->page->index,
2417                                        form_field_mapping,
2418                                        field, &view_area);
2419
2420         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2421         gtk_widget_show (field_widget);
2422         gtk_widget_grab_focus (field_widget);
2423 }
2424
2425 /* Annotations */
2426 static EvViewWindowChild *
2427 ev_view_get_window_child (EvView    *view,
2428                           GtkWidget *window)
2429 {
2430         GList *children = view->window_children;
2431
2432         while (children) {
2433                 EvViewWindowChild *child;
2434
2435                 child = (EvViewWindowChild *)children->data;
2436                 children = children->next;
2437
2438                 if (child->window == window)
2439                         return child;
2440         }
2441
2442         return NULL;
2443 }
2444
2445 static void
2446 ev_view_window_child_move (EvView            *view,
2447                            EvViewWindowChild *child,
2448                            gint               x,
2449                            gint               y)
2450 {
2451         child->x = x;
2452         child->y = y;
2453         gtk_window_move (GTK_WINDOW (child->window),
2454                          MAX (child->parent_x, x),
2455                          MAX (child->parent_y, y));
2456 }
2457
2458 static void
2459 ev_view_window_child_move_with_parent (EvView    *view,
2460                                        GtkWidget *window)
2461 {
2462         EvViewWindowChild *child;
2463         gint               root_x, root_y;
2464
2465         child = ev_view_get_window_child (view, window);
2466         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2467                                &root_x, &root_y);
2468         if (root_x != child->parent_x || root_y != child->parent_y) {
2469                 gint dest_x, dest_y;
2470
2471                 dest_x = child->x + (root_x - child->parent_x);
2472                 dest_y = child->y + (root_y - child->parent_y);
2473                 child->parent_x = root_x;
2474                 child->parent_y = root_y;
2475                 ev_view_window_child_move (view, child, dest_x, dest_y);
2476         }
2477
2478         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2479                 gtk_widget_show (window);
2480 }
2481
2482 static void
2483 ev_view_window_child_put (EvView    *view,
2484                           GtkWidget *window,
2485                           guint      page,
2486                           gint       x,
2487                           gint       y,
2488                           gdouble    orig_x,
2489                           gdouble    orig_y)
2490 {
2491         EvViewWindowChild *child;
2492         gint               root_x, root_y;
2493
2494         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2495                                &root_x, &root_y);
2496
2497         child = g_new0 (EvViewWindowChild, 1);
2498         child->window = window;
2499         child->page = page;
2500         child->orig_x = orig_x;
2501         child->orig_y = orig_y;
2502         child->parent_x = root_x;
2503         child->parent_y = root_y;
2504         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2505         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2506
2507         if (child->visible)
2508                 gtk_widget_show (window);
2509         else
2510                 gtk_widget_hide (window);
2511
2512         view->window_children = g_list_append (view->window_children, child);
2513 }
2514
2515 static EvViewWindowChild *
2516 ev_view_find_window_child_for_annot (EvView       *view,
2517                                      guint         page,
2518                                      EvAnnotation *annot)
2519 {
2520         GList *children = view->window_children;
2521
2522         while (children) {
2523                 EvViewWindowChild *child;
2524                 EvAnnotation      *wannot;
2525
2526                 child = (EvViewWindowChild *)children->data;
2527                 children = children->next;
2528
2529                 if (child->page != page)
2530                         continue;
2531
2532                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2533                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2534                         return child;
2535         }
2536
2537         return NULL;
2538 }
2539
2540 static void
2541 ev_view_window_children_free (EvView *view)
2542 {
2543         GList *l;
2544
2545         if (!view->window_children)
2546                 return;
2547
2548         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2549                 EvViewWindowChild *child;
2550
2551                 child = (EvViewWindowChild *)l->data;
2552                 gtk_widget_destroy (GTK_WIDGET (child->window));
2553                 g_free (child);
2554         }
2555         g_list_free (view->window_children);
2556         view->window_children = NULL;
2557         view->window_child_focus = NULL;
2558 }
2559
2560 static void
2561 annotation_window_grab_focus (GtkWidget *widget,
2562                               EvView    *view)
2563 {
2564         if (view->window_child_focus)
2565                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2566         view->window_child_focus = ev_view_get_window_child (view, widget);
2567 }
2568
2569 static void
2570 annotation_window_closed (EvAnnotationWindow *window,
2571                           EvView             *view)
2572 {
2573         EvViewWindowChild *child;
2574
2575         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2576         child->visible = FALSE;
2577 }
2578
2579 static void
2580 annotation_window_moved (EvAnnotationWindow *window,
2581                          gint                x,
2582                          gint                y,
2583                          EvView             *view)
2584 {
2585         EvViewWindowChild *child;
2586         GdkRectangle       page_area;
2587         GtkBorder          border;
2588         GdkRectangle       view_rect;
2589         EvRectangle        doc_rect;
2590         gint               width, height;
2591
2592         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2593         if (child->x == x && child->y == y)
2594                 return;
2595
2596         child->moved = TRUE;
2597         child->x = x;
2598         child->y = y;
2599
2600         /* Window has been moved by the user,
2601          * we have to set a new origin in doc coords
2602          */
2603         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2604         view_rect.x = (x - child->parent_x) + view->scroll_x;
2605         view_rect.y = (y - child->parent_y) + view->scroll_y;
2606         view_rect.width = width;
2607         view_rect.height = height;
2608
2609         get_page_extents (view, child->page, &page_area, &border);
2610         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2611         child->orig_x = doc_rect.x1;
2612         child->orig_y = doc_rect.y1;
2613 }
2614
2615 static void
2616 ev_view_annotation_save (EvView       *view,
2617                          EvAnnotation *annot)
2618 {
2619         if (!view->document)
2620                 return;
2621
2622         if (!annot->changed)
2623                 return;
2624
2625         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2626                                                          annot, annot->contents);
2627         annot->changed = FALSE;
2628 }
2629
2630 static void
2631 show_annotation_windows (EvView *view,
2632                          gint    page)
2633 {
2634         GList     *annots, *l;
2635         GtkWindow *parent;
2636
2637         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2638
2639         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2640
2641         for (l = annots; l && l->data; l = g_list_next (l)) {
2642                 EvAnnotation      *annot;
2643                 EvViewWindowChild *child;
2644                 GtkWidget         *window;
2645                 EvRectangle       *doc_rect;
2646                 GdkRectangle       view_rect;
2647
2648                 annot = ((EvMapping *)(l->data))->data;
2649
2650                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2651                         continue;
2652
2653                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2654                         continue;
2655
2656                 window = g_object_get_data (G_OBJECT (annot), "popup");
2657                 if (window) {
2658                         ev_view_window_child_move_with_parent (view, window);
2659                         continue;
2660                 }
2661
2662                 /* Look if we already have a popup for this annot */
2663                 child = ev_view_find_window_child_for_annot (view, page, annot);
2664                 window = child ? child->window : NULL;
2665                 if (window) {
2666                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2667                         g_object_set_data (G_OBJECT (annot), "popup", window);
2668                         ev_view_window_child_move_with_parent (view, window);
2669                 } else {
2670                         window = ev_annotation_window_new (annot, parent);
2671                         g_signal_connect (window, "grab_focus",
2672                                           G_CALLBACK (annotation_window_grab_focus),
2673                                           view);
2674                         g_signal_connect (window, "closed",
2675                                           G_CALLBACK (annotation_window_closed),
2676                                           view);
2677                         g_signal_connect (window, "moved",
2678                                           G_CALLBACK (annotation_window_moved),
2679                                           view);
2680                         g_object_set_data (G_OBJECT (annot), "popup", window);
2681
2682                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2683                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2684                         view_rect.x -= view->scroll_x;
2685                         view_rect.y -= view->scroll_y;
2686
2687                         ev_view_window_child_put (view, window, page,
2688                                                   view_rect.x, view_rect.y,
2689                                                   doc_rect->x1, doc_rect->y1);
2690
2691                         g_object_weak_ref (G_OBJECT (annot),
2692                                            (GWeakNotify)ev_view_annotation_save,
2693                                            view);
2694                 }
2695         }
2696 }
2697
2698 static void
2699 hide_annotation_windows (EvView *view,
2700                          gint    page)
2701 {
2702         GList *annots, *l;
2703
2704         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2705
2706         for (l = annots; l && l->data; l = g_list_next (l)) {
2707                 EvAnnotation *annot;
2708                 GtkWidget    *window;
2709
2710                 annot = ((EvMapping *)(l->data))->data;
2711
2712                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2713                         continue;
2714
2715                 window = g_object_get_data (G_OBJECT (annot), "popup");
2716                 if (window)
2717                         gtk_widget_hide (window);
2718         }
2719 }
2720
2721 static EvAnnotation *
2722 ev_view_get_annotation_at_location (EvView  *view,
2723                                     gdouble  x,
2724                                     gdouble  y)
2725 {
2726         gint page = -1;
2727         gint x_new = 0, y_new = 0;
2728         GList *annotations_mapping;
2729
2730         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2731                 return NULL;
2732
2733         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2734                 return NULL;
2735
2736         annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
2737
2738         if (annotations_mapping)
2739                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2740         else
2741                 return NULL;
2742 }
2743
2744 static void
2745 ev_view_handle_annotation (EvView       *view,
2746                            EvAnnotation *annot,
2747                            gdouble       x,
2748                            gdouble       y,
2749                            guint32       timestamp)
2750 {
2751         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2752                 GtkWidget *window;
2753
2754                 window = g_object_get_data (G_OBJECT (annot), "popup");
2755                 if (window) {
2756                         EvViewWindowChild *child;
2757
2758                         child = ev_view_get_window_child (view, window);
2759                         if (!child->visible) {
2760                                 child->visible = TRUE;
2761                                 ev_view_window_child_move (view, child, child->x, child->y);
2762                                 gtk_widget_show (window);
2763                         }
2764                 }
2765         }
2766
2767         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2768                 EvAttachment *attachment = EV_ANNOTATION_ATTACHMENT (annot)->attachment;
2769
2770                 if (attachment) {
2771                         GError *error = NULL;
2772
2773                         ev_attachment_open (attachment,
2774                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2775                                             timestamp,
2776                                             &error);
2777
2778                         if (error) {
2779                                 g_warning ("%s", error->message);
2780                                 g_error_free (error);
2781                         }
2782                 }
2783         }
2784 }
2785
2786 /*** GtkWidget implementation ***/
2787
2788 static void
2789 ev_view_size_request_continuous_dual_page (EvView         *view,
2790                                            GtkRequisition *requisition)
2791 {
2792         gint n_pages;
2793
2794         n_pages = ev_document_get_n_pages (view->document) + 1;
2795         get_page_y_offset (view, n_pages, &requisition->height);
2796
2797         switch (view->sizing_mode) {
2798                 case EV_SIZING_FIT_WIDTH:
2799                 case EV_SIZING_BEST_FIT:
2800                         requisition->width = 1;
2801
2802                         break;
2803                 case EV_SIZING_FREE: {
2804                         gint max_width;
2805                         GtkBorder border;
2806
2807                         ev_view_get_max_page_size (view, &max_width, NULL);
2808                         compute_border (view, max_width, max_width, &border);
2809                         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2810                 }
2811                         break;
2812                 default:
2813                         g_assert_not_reached ();
2814         }
2815 }
2816
2817 static void
2818 ev_view_size_request_continuous (EvView         *view,
2819                                  GtkRequisition *requisition)
2820 {
2821         gint n_pages;
2822
2823         n_pages = ev_document_get_n_pages (view->document);
2824         get_page_y_offset (view, n_pages, &requisition->height);
2825
2826         switch (view->sizing_mode) {
2827                 case EV_SIZING_FIT_WIDTH:
2828                 case EV_SIZING_BEST_FIT:
2829                         requisition->width = 1;
2830
2831                         break;
2832                 case EV_SIZING_FREE: {
2833                         gint max_width;
2834                         GtkBorder border;
2835
2836                         ev_view_get_max_page_size (view, &max_width, NULL);
2837                         compute_border (view, max_width, max_width, &border);
2838                         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2839                 }
2840                         break;
2841                 default:
2842                         g_assert_not_reached ();
2843         }
2844 }
2845
2846 static void
2847 ev_view_size_request_dual_page (EvView         *view,
2848                                 GtkRequisition *requisition)
2849 {
2850         GtkBorder border;
2851         gint width, height;
2852
2853         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2854                 requisition->width = 1;
2855                 requisition->height = 1;
2856
2857                 return;
2858         }
2859
2860         /* Find the largest of the two. */
2861         ev_view_get_page_size (view,
2862                                view->current_page,
2863                                &width, &height);
2864         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2865                 gint width_2, height_2;
2866                 ev_view_get_page_size (view,
2867                                        view->current_page + 1,
2868                                        &width_2, &height_2);
2869                 if (width_2 > width) {
2870                         width = width_2;
2871                         height = height_2;
2872                 }
2873         }
2874         compute_border (view, width, height, &border);
2875
2876         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2877                 ((width + border.left + border.right) * 2) + (view->spacing * 3);
2878         requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
2879 }
2880
2881 static void
2882 ev_view_size_request_single_page (EvView         *view,
2883                                   GtkRequisition *requisition)
2884 {
2885         GtkBorder border;
2886         gint width, height;
2887
2888         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2889                 requisition->width = 1;
2890                 requisition->height = 1;
2891
2892                 return;
2893         }
2894
2895         ev_view_get_page_size (view, view->current_page, &width, &height);
2896         compute_border (view, width, height, &border);
2897
2898         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2899                 width + border.left + border.right + (2 * view->spacing);
2900         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2901 }
2902
2903 static void
2904 ev_view_size_request (GtkWidget      *widget,
2905                       GtkRequisition *requisition)
2906 {
2907         EvView *view = EV_VIEW (widget);
2908
2909         if (view->document == NULL) {
2910                 requisition->width = 1;
2911                 requisition->height = 1;
2912                 return;
2913         }
2914
2915         if (view->presentation) {
2916                 requisition->width = 1;
2917                 requisition->height = 1;
2918                 return;
2919         }
2920
2921         if (view->continuous && view->dual_page)
2922                 ev_view_size_request_continuous_dual_page (view, requisition);
2923         else if (view->continuous)
2924                 ev_view_size_request_continuous (view, requisition);
2925         else if (view->dual_page)
2926                 ev_view_size_request_dual_page (view, requisition);
2927         else
2928                 ev_view_size_request_single_page (view, requisition);
2929 }
2930
2931 static void
2932 ev_view_size_allocate (GtkWidget      *widget,
2933                        GtkAllocation  *allocation)
2934 {
2935         EvView *view = EV_VIEW (widget);
2936         GList  *children, *l;
2937         gint    root_x, root_y;
2938
2939         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2940
2941         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2942             view->sizing_mode == EV_SIZING_BEST_FIT) {
2943                 ev_view_zoom_for_size (view,
2944                                        allocation->width,
2945                                        allocation->height);
2946                 ev_view_size_request (widget, &widget->requisition);
2947         }
2948
2949         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2950         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2951
2952         if (view->document)
2953                 view_update_range_and_current_page (view);
2954
2955         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2956         view->pending_resize = FALSE;
2957         view->pending_point.x = 0;
2958         view->pending_point.y = 0;
2959
2960         children = gtk_container_get_children (GTK_CONTAINER (widget));
2961         for (l = children; l && l->data; l = g_list_next (l)) {
2962                 EvFormField   *field;
2963                 GdkRectangle   view_area;
2964                 GList         *form_field_mapping;
2965                 GtkAllocation  child_allocation;
2966                 GtkRequisition child_requisition;
2967                 GtkWidget     *child = (GtkWidget *)l->data;
2968
2969                 field = g_object_get_data (G_OBJECT (child), "form-field");
2970                 if (!field)
2971                         continue;
2972
2973                 form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2974                                                                            field->page->index);
2975                 ev_view_get_area_from_mapping (view, field->page->index,
2976                                                form_field_mapping,
2977                                                field, &view_area);
2978
2979                 gtk_widget_size_request (child, &child_requisition);
2980                 if (child_requisition.width != view_area.width ||
2981                     child_requisition.height != view_area.height)
2982                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2983
2984                 gtk_container_child_get (GTK_CONTAINER (widget),
2985                                          child,
2986                                          "x", &child_allocation.x,
2987                                          "y", &child_allocation.y,
2988                                          NULL);
2989                 if (child_allocation.x != view_area.x ||
2990                     child_allocation.y != view_area.y) {
2991                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2992                 }
2993         }
2994         g_list_free (children);
2995
2996         if (view->window_children)
2997                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2998                                        &root_x, &root_y);
2999
3000         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
3001                 EvViewWindowChild *child;
3002                 EvRectangle        doc_rect;
3003                 GdkRectangle       view_rect;
3004
3005                 child = (EvViewWindowChild *)l->data;
3006
3007                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
3008                 if (child->moved) {
3009                         doc_rect.x1 = child->orig_x;
3010                         doc_rect.y1 = child->orig_y;
3011                 }
3012                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
3013                 view_rect.x -= view->scroll_x;
3014                 view_rect.y -= view->scroll_y;
3015
3016                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
3017                         child->parent_x = root_x;
3018                         child->parent_y = root_y;
3019                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
3020                 }
3021         }
3022 }
3023
3024 static void
3025 ev_view_realize (GtkWidget *widget)
3026 {
3027         EvView *view = EV_VIEW (widget);
3028
3029         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
3030                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
3031
3032         gdk_window_set_events (view->layout.bin_window,
3033                                (gdk_window_get_events (view->layout.bin_window) |
3034                                 GDK_EXPOSURE_MASK |
3035                                 GDK_BUTTON_PRESS_MASK |
3036                                 GDK_BUTTON_RELEASE_MASK |
3037                                 GDK_SCROLL_MASK |
3038                                 GDK_KEY_PRESS_MASK |
3039                                 GDK_POINTER_MOTION_MASK |
3040                                 GDK_POINTER_MOTION_HINT_MASK |
3041                                 GDK_ENTER_NOTIFY_MASK |
3042                                 GDK_LEAVE_NOTIFY_MASK));
3043
3044         if (view->presentation)
3045                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
3046         else
3047                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
3048
3049         on_adjustment_value_changed (NULL, view);
3050 }
3051
3052 static gboolean
3053 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3054 {
3055         EvView *view = EV_VIEW (widget);
3056         guint state;
3057
3058         state = event->state & gtk_accelerator_get_default_mod_mask ();
3059
3060         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
3061                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
3062                 if (event->direction == GDK_SCROLL_UP ||
3063                     event->direction == GDK_SCROLL_LEFT) {
3064                         if (ev_view_can_zoom_in (view)) {
3065                                 ev_view_zoom_in (view);
3066                         }
3067                 } else {
3068                         if (ev_view_can_zoom_out (view)) {
3069                                 ev_view_zoom_out (view);
3070                         }
3071                 }
3072
3073                 return TRUE;
3074         }
3075
3076         view->jump_to_find_result = FALSE;
3077
3078         /* Shift+Wheel scrolls the in the perpendicular direction */
3079         if (state & GDK_SHIFT_MASK) {
3080                 if (event->direction == GDK_SCROLL_UP)
3081                         event->direction = GDK_SCROLL_LEFT;
3082                 else if (event->direction == GDK_SCROLL_LEFT)
3083                         event->direction = GDK_SCROLL_UP;
3084                 else if (event->direction == GDK_SCROLL_DOWN)
3085                         event->direction = GDK_SCROLL_RIGHT;
3086                 else if (event->direction == GDK_SCROLL_RIGHT)
3087                         event->direction = GDK_SCROLL_DOWN;
3088
3089                 event->state &= ~GDK_SHIFT_MASK;
3090                 state &= ~GDK_SHIFT_MASK;
3091         }
3092
3093         if (state == 0 &&
3094             (view->presentation ||
3095              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
3096                 switch (event->direction) {
3097                         case GDK_SCROLL_DOWN:
3098                         case GDK_SCROLL_RIGHT:
3099                                 ev_view_next_page (view);
3100                                 break;
3101                         case GDK_SCROLL_UP:
3102                         case GDK_SCROLL_LEFT:
3103                                 ev_view_previous_page (view);
3104                                 break;
3105                 }
3106
3107                 return TRUE;
3108         }
3109
3110         return FALSE;
3111 }
3112
3113 static EvViewSelection *
3114 find_selection_for_page (EvView *view,
3115                          gint    page)
3116 {
3117         GList *list;
3118
3119         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3120                 EvViewSelection *selection;
3121
3122                 selection = (EvViewSelection *) list->data;
3123
3124                 if (selection->page == page)
3125                         return selection;
3126         }
3127
3128         return NULL;
3129 }
3130
3131 static void
3132 draw_end_presentation_page (EvView       *view,
3133                             GdkRectangle *page_area)
3134 {
3135         PangoLayout *layout;
3136         PangoFontDescription *font_desc;
3137         gchar *markup;
3138         const gchar *text = _("End of presentation. Press Escape to exit.");
3139
3140         if (view->presentation_state != EV_PRESENTATION_END)
3141                 return;
3142
3143         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
3144         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
3145         pango_layout_set_markup (layout, markup, -1);
3146         g_free (markup);
3147
3148         font_desc = pango_font_description_new ();
3149         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
3150         pango_layout_set_font_description (layout, font_desc);
3151
3152         gtk_paint_layout (GTK_WIDGET (view)->style,
3153                           view->layout.bin_window,
3154                           GTK_WIDGET_STATE (view),
3155                           FALSE,
3156                           page_area,
3157                           GTK_WIDGET (view),
3158                           NULL,
3159                           page_area->x + 15,
3160                           page_area->y + 15,
3161                           layout);
3162
3163         pango_font_description_free (font_desc);
3164         g_object_unref (layout);
3165 }
3166
3167 static gboolean
3168 ev_view_expose_event (GtkWidget      *widget,
3169                       GdkEventExpose *event)
3170 {
3171         EvView  *view = EV_VIEW (widget);
3172         cairo_t *cr;
3173         gint     i;
3174
3175         if (view->animation) {
3176                 if (ev_transition_animation_ready (view->animation)) {
3177                         GdkRectangle page_area;
3178                         GtkBorder    border;
3179
3180                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
3181                                 cr = gdk_cairo_create (view->layout.bin_window);
3182
3183                                 /* normalize to x=0, y=0 */
3184                                 cairo_translate (cr, page_area.x, page_area.y);
3185                                 page_area.x = page_area.y = 0;
3186
3187                                 ev_transition_animation_paint (view->animation, cr, page_area);
3188                                 cairo_destroy (cr);
3189                         }
3190                 }
3191
3192                 return TRUE;
3193         }
3194
3195         if (view->presentation) {
3196                 switch (view->presentation_state) {
3197                         case EV_PRESENTATION_END: {
3198                                 GdkRectangle area = {0};
3199
3200                                 area.width = widget->allocation.width;
3201                                 area.height = widget->allocation.height;
3202
3203                                 draw_end_presentation_page (view, &area);
3204                         }
3205                                 return FALSE;
3206                         case EV_PRESENTATION_BLACK:
3207                         case EV_PRESENTATION_WHITE:
3208                                 return FALSE;
3209                         case EV_PRESENTATION_NORMAL:
3210                         default:
3211                                 break;
3212                 }
3213         } else if (view->loading) {
3214                 GdkRectangle area = {0};
3215
3216                 area.width = widget->allocation.width;
3217                 area.height = widget->allocation.height;
3218
3219                 draw_loading_text (view,
3220                                    &area,
3221                                    &(event->area));
3222         }
3223
3224         if (view->document == NULL)
3225                 return FALSE;
3226
3227         cr = gdk_cairo_create (view->layout.bin_window);
3228
3229         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3230                 GdkRectangle page_area;
3231                 GtkBorder border;
3232                 gboolean page_ready = TRUE;
3233
3234                 if (!get_page_extents (view, i, &page_area, &border))
3235                         continue;
3236
3237                 page_area.x -= view->scroll_x;
3238                 page_area.y -= view->scroll_y;
3239
3240                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3241
3242                 if (page_ready && view->find_pages && view->highlight_find_results)
3243                         highlight_find_results (view, i);
3244                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3245                         show_annotation_windows (view, i);
3246         }
3247
3248         cairo_destroy (cr);
3249
3250         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3251                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3252
3253         return FALSE;
3254 }
3255
3256 static gboolean
3257 ev_view_do_popup_menu (EvView *view,
3258                        gdouble x,
3259                        gdouble y)
3260 {
3261         EvLink       *link;
3262         EvImage      *image;
3263         EvAnnotation *annot;
3264
3265         image = ev_view_get_image_at_location (view, x, y);
3266         if (image) {
3267                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
3268                 return TRUE;
3269         }
3270
3271         link = ev_view_get_link_at_location (view, x, y);
3272         if (link) {
3273                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
3274                 return TRUE;
3275         }
3276
3277         annot = ev_view_get_annotation_at_location (view, x, y);
3278         if (annot) {
3279                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, annot);
3280                 return TRUE;
3281         }
3282
3283         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
3284
3285         return TRUE;
3286 }
3287
3288 static gboolean
3289 ev_view_popup_menu (GtkWidget *widget)
3290 {
3291         gint x, y;
3292
3293         gtk_widget_get_pointer (widget, &x, &y);
3294         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3295 }
3296
3297 static void
3298 get_link_area (EvView       *view,
3299                gint          x,
3300                gint          y,
3301                EvLink       *link,
3302                GdkRectangle *area)
3303 {
3304         GList *link_mapping;
3305         gint   page;
3306         gint   x_offset = 0, y_offset = 0;
3307
3308         x += view->scroll_x;
3309         y += view->scroll_y;
3310
3311         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3312
3313         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
3314         ev_view_get_area_from_mapping (view, page,
3315                                        link_mapping,
3316                                        link, area);
3317 }
3318
3319 static void
3320 get_annot_area (EvView       *view,
3321                gint          x,
3322                gint          y,
3323                EvAnnotation *annot,
3324                GdkRectangle *area)
3325 {
3326         GList *annot_mapping;
3327         gint   page;
3328         gint   x_offset = 0, y_offset = 0;
3329
3330         x += view->scroll_x;
3331         y += view->scroll_y;
3332
3333         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3334
3335         annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
3336         ev_view_get_area_from_mapping (view, page,
3337                                        annot_mapping,
3338                                        annot, area);
3339 }
3340
3341 static gboolean
3342 ev_view_query_tooltip (GtkWidget  *widget,
3343                        gint        x,
3344                        gint        y,
3345                        gboolean    keyboard_tip,
3346                        GtkTooltip *tooltip)
3347 {
3348         EvView       *view = EV_VIEW (widget);
3349         EvLink       *link;
3350         EvAnnotation *annot;
3351         gchar        *text;
3352
3353         annot = ev_view_get_annotation_at_location (view, x, y);
3354         if (annot && annot->contents) {
3355                 GdkRectangle annot_area;
3356
3357                 get_annot_area (view, x, y, annot, &annot_area);
3358                 gtk_tooltip_set_text (tooltip, annot->contents);
3359                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3360
3361                 return TRUE;
3362         }
3363
3364         link = ev_view_get_link_at_location (view, x, y);
3365         if (!link)
3366                 return FALSE;
3367
3368         text = tip_from_link (view, link);
3369         if (text && g_utf8_validate (text, -1, NULL)) {
3370                 GdkRectangle link_area;
3371
3372                 get_link_area (view, x, y, link, &link_area);
3373                 gtk_tooltip_set_text (tooltip, text);
3374                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3375         }
3376         g_free (text);
3377
3378         return TRUE;
3379 }
3380
3381 static void
3382 start_selection_for_event (EvView         *view,
3383                            GdkEventButton *event)
3384 {
3385         clear_selection (view);
3386
3387         view->selection_info.start.x = event->x + view->scroll_x;
3388         view->selection_info.start.y = event->y + view->scroll_y;
3389
3390         switch (event->type) {
3391                 case GDK_2BUTTON_PRESS:
3392                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3393                         break;
3394                 case GDK_3BUTTON_PRESS:
3395                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3396                         break;
3397                 default:
3398                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3399                         return;
3400         }
3401
3402         /* In case of WORD or LINE, compute selections now */
3403         compute_selections (view,
3404                             view->selection_info.style,
3405                             &(view->selection_info.start),
3406                             &(view->selection_info.start));
3407 }
3408
3409 static gboolean
3410 ev_view_button_press_event (GtkWidget      *widget,
3411                             GdkEventButton *event)
3412 {
3413         EvView *view = EV_VIEW (widget);
3414
3415         if (!view->document)
3416                 return FALSE;
3417
3418         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3419                 gtk_widget_grab_focus (widget);
3420         }
3421
3422         if (view->window_child_focus) {
3423                 EvAnnotationWindow *window;
3424                 EvAnnotation       *annot;
3425
3426                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3427                 annot = ev_annotation_window_get_annotation (window);
3428                 ev_annotation_window_ungrab_focus (window);
3429                 ev_view_annotation_save (view, annot);
3430                 view->window_child_focus = NULL;
3431         }
3432
3433         view->pressed_button = event->button;
3434         view->selection_info.in_drag = FALSE;
3435
3436         if (view->scroll_info.autoscrolling)
3437                 return TRUE;
3438
3439         switch (event->button) {
3440                 case 1: {
3441                         EvImage *image;
3442                         EvAnnotation *annot;
3443                         EvFormField *field;
3444
3445                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3446                                 if (event->type == GDK_3BUTTON_PRESS) {
3447                                         start_selection_for_event (view, event);
3448                                 } else if (location_in_selected_text (view,
3449                                                                event->x + view->scroll_x,
3450                                                                event->y + view->scroll_y)) {
3451                                         view->selection_info.in_drag = TRUE;
3452                                 } else {
3453                                         start_selection_for_event (view, event);
3454                                 }
3455
3456                                 gtk_widget_queue_draw (widget);
3457                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3458                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3459                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3460                                 ev_view_remove_all (view);
3461                                 ev_view_handle_form_field (view, field, event->x, event->y);
3462                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3463                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3464                                 if (view->image_dnd_info.image)
3465                                         g_object_unref (view->image_dnd_info.image);
3466                                 view->image_dnd_info.image = g_object_ref (image);
3467                                 view->image_dnd_info.in_drag = TRUE;
3468
3469                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3470                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3471                         } else {
3472                                 ev_view_remove_all (view);
3473
3474                                 if (EV_IS_SELECTION (view->document))
3475                                         start_selection_for_event (view, event);
3476                         }
3477                 }
3478                         return TRUE;
3479                 case 2:
3480                         /* use root coordinates as reference point because
3481                          * scrolling changes window relative coordinates */
3482                         view->drag_info.start.x = event->x_root;
3483                         view->drag_info.start.y = event->y_root;
3484                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3485                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3486
3487                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3488
3489                         return TRUE;
3490                 case 3:
3491                         view->scroll_info.start_y = event->y;
3492                         return ev_view_do_popup_menu (view, event->x, event->y);
3493         }
3494
3495         return FALSE;
3496 }
3497
3498 static void
3499 ev_view_remove_all (EvView *view)
3500 {
3501         GList *children, *child;
3502
3503         children = gtk_container_get_children (GTK_CONTAINER (view));
3504         for (child = children; child && child->data; child = g_list_next (child)) {
3505                 gtk_container_remove (GTK_CONTAINER (view),
3506                                       GTK_WIDGET (child->data));
3507         }
3508         g_list_free (children);
3509 }
3510
3511 /*** Drag and Drop ***/
3512 static void
3513 ev_view_drag_data_get (GtkWidget        *widget,
3514                        GdkDragContext   *context,
3515                        GtkSelectionData *selection_data,
3516                        guint             info,
3517                        guint             time)
3518 {
3519         EvView *view = EV_VIEW (widget);
3520
3521         switch (info) {
3522                 case TARGET_DND_TEXT:
3523                         if (EV_IS_SELECTION (view->document) &&
3524                             view->selection_info.selections) {
3525                                 gchar *text;
3526
3527                                 text = get_selected_text (view);
3528                                 gtk_selection_data_set_text (selection_data,
3529                                                              text,
3530                                                              strlen (text));
3531                                 g_free (text);
3532                         }
3533                         break;
3534                 case TARGET_DND_IMAGE:
3535                         if (view->image_dnd_info.image) {
3536                                 GdkPixbuf *pixbuf;
3537
3538                                 ev_document_doc_mutex_lock ();
3539                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3540                                                                        view->image_dnd_info.image);
3541                                 ev_document_doc_mutex_unlock ();
3542
3543                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3544                                 g_object_unref (pixbuf);
3545                         }
3546                         break;
3547                 case TARGET_DND_URI:
3548                         if (view->image_dnd_info.image) {
3549                                 GdkPixbuf   *pixbuf;
3550                                 const gchar *tmp_uri;
3551                                 gchar       *uris[2];
3552
3553                                 ev_document_doc_mutex_lock ();
3554                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3555                                                                        view->image_dnd_info.image);
3556                                 ev_document_doc_mutex_unlock ();
3557
3558                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3559                                 g_object_unref (pixbuf);
3560
3561                                 uris[0] = (gchar *)tmp_uri;
3562                                 uris[1] = NULL;
3563                                 gtk_selection_data_set_uris (selection_data, uris);
3564                         }
3565         }
3566 }
3567
3568 static gboolean
3569 ev_view_drag_motion (GtkWidget      *widget,
3570                      GdkDragContext *context,
3571                      gint            x,
3572                      gint            y,
3573                      guint           time)
3574 {
3575         if (gtk_drag_get_source_widget (context) == widget)
3576                 gdk_drag_status (context, 0, time);
3577         else
3578                 gdk_drag_status (context, context->suggested_action, time);
3579
3580         return TRUE;
3581 }
3582
3583 static gboolean
3584 selection_update_idle_cb (EvView *view)
3585 {
3586         compute_selections (view,
3587                             view->selection_info.style,
3588                             &view->selection_info.start,
3589                             &view->motion);
3590         view->selection_update_id = 0;
3591         return FALSE;
3592 }
3593
3594 static gboolean
3595 selection_scroll_timeout_cb (EvView *view)
3596 {
3597         gint x, y, shift = 0;
3598         GtkWidget *widget = GTK_WIDGET (view);
3599
3600         gtk_widget_get_pointer (widget, &x, &y);
3601
3602         if (y > widget->allocation.height) {
3603                 shift = (y - widget->allocation.height) / 2;
3604         } else if (y < 0) {
3605                 shift = y / 2;
3606         }
3607
3608         if (shift)
3609                 gtk_adjustment_set_value (view->vadjustment,
3610                                           CLAMP (view->vadjustment->value + shift,
3611                                           view->vadjustment->lower,
3612                                           view->vadjustment->upper -
3613                                           view->vadjustment->page_size));
3614
3615         if (x > widget->allocation.width) {
3616                 shift = (x - widget->allocation.width) / 2;
3617         } else if (x < 0) {
3618                 shift = x / 2;
3619         }
3620
3621         if (shift)
3622                 gtk_adjustment_set_value (view->hadjustment,
3623                                           CLAMP (view->hadjustment->value + shift,
3624                                           view->hadjustment->lower,
3625                                           view->hadjustment->upper -
3626                                           view->hadjustment->page_size));
3627
3628         return TRUE;
3629 }
3630
3631 static gboolean
3632 ev_view_drag_update_momentum (EvView *view)
3633 {
3634         int i;
3635         if (!view->drag_info.in_drag)
3636                 return FALSE;
3637
3638         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3639                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3640                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3641         }
3642
3643         /* Momentum is a moving average of 10ms granularity over
3644          * the last 100ms with each 10ms stored in buffer.
3645          */
3646
3647         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3648         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3649
3650         return TRUE;
3651 }
3652
3653 static gboolean
3654 ev_view_scroll_drag_release (EvView *view)
3655 {
3656         gdouble dhadj_value, dvadj_value;
3657         gdouble oldhadjustment, oldvadjustment;
3658
3659         view->drag_info.momentum.x /= 1.2;
3660         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3661
3662         dhadj_value = view->hadjustment->page_size *
3663                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3664         dvadj_value = view->vadjustment->page_size *
3665                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3666
3667         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3668         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3669
3670      /* When we reach the edges, we need either to absorb some momentum and bounce by
3671       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3672      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3673            ((oldhadjustment + dhadj_value) < 0))
3674                 view->drag_info.momentum.x = 0;
3675         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3676            ((oldvadjustment + dvadj_value) < 0))
3677                 view->drag_info.momentum.y = 0;
3678
3679         gtk_adjustment_set_value (view->hadjustment,
3680                                 MIN (oldhadjustment + dhadj_value,
3681                                 view->hadjustment->upper - view->hadjustment->page_size));
3682         gtk_adjustment_set_value (view->vadjustment,
3683                                 MIN (oldvadjustment + dvadj_value,
3684                                 view->vadjustment->upper - view->vadjustment->page_size));
3685
3686         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3687            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3688                 return FALSE;
3689         else
3690                 return TRUE;
3691 }
3692
3693 static gboolean
3694 ev_view_motion_notify_event (GtkWidget      *widget,
3695                              GdkEventMotion *event)
3696 {
3697         EvView *view = EV_VIEW (widget);
3698         gint x, y;
3699
3700         if (!view->document)
3701                 return FALSE;
3702
3703
3704         if (event->is_hint || event->window != view->layout.bin_window) {
3705             gtk_widget_get_pointer (widget, &x, &y);
3706         } else {
3707             x = event->x;
3708             y = event->y;
3709         }
3710
3711         if (view->scroll_info.autoscrolling) {
3712                 view->scroll_info.last_y = y;
3713                 return TRUE;
3714         }
3715
3716         if (view->selection_info.in_drag) {
3717                 if (gtk_drag_check_threshold (widget,
3718                                               view->selection_info.start.x,
3719                                               view->selection_info.start.y,
3720                                               x, y)) {
3721                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3722
3723                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3724
3725                         gtk_drag_begin (widget, target_list,
3726                                         GDK_ACTION_COPY,
3727                                         1, (GdkEvent *)event);
3728
3729                         view->selection_info.in_drag = FALSE;
3730
3731                         gtk_target_list_unref (target_list);
3732
3733                         return TRUE;
3734                 }
3735         } else if (view->image_dnd_info.in_drag) {
3736                 if (gtk_drag_check_threshold (widget,
3737                                               view->selection_info.start.x,
3738                                               view->selection_info.start.y,
3739                                               x, y)) {
3740                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3741
3742                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3743                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3744
3745                         gtk_drag_begin (widget, target_list,
3746                                         GDK_ACTION_COPY,
3747                                         1, (GdkEvent *)event);
3748
3749                         view->image_dnd_info.in_drag = FALSE;
3750
3751                         gtk_target_list_unref (target_list);
3752
3753                         return TRUE;
3754                 }
3755         }
3756
3757         switch (view->pressed_button) {
3758         case 1:
3759                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3760                  * documents only.
3761                  */
3762                 if (view->rotation != 0)
3763                         return FALSE;
3764
3765                 /* Schedule timeout to scroll during selection and additionally
3766                  * scroll once to allow arbitrary speed. */
3767                 if (!view->selection_scroll_id)
3768                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3769                                                                (GSourceFunc)selection_scroll_timeout_cb,
3770                                                                view);
3771                 else
3772                     selection_scroll_timeout_cb (view);
3773
3774                 view->selection_info.in_selection = TRUE;
3775                 view->motion.x = x + view->scroll_x;
3776                 view->motion.y = y + view->scroll_y;
3777
3778                 /* Queue an idle to handle the motion.  We do this because
3779                  * handling any selection events in the motion could be slower
3780                  * than new motion events reach us.  We always put it in the
3781                  * idle to make sure we catch up and don't visibly lag the
3782                  * mouse. */
3783                 if (!view->selection_update_id)
3784                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3785
3786                 return TRUE;
3787         case 2:
3788                 if (!view->drag_info.in_drag) {
3789                         gboolean start;
3790                         int i;
3791
3792                         start = gtk_drag_check_threshold (widget,
3793                                                           view->drag_info.start.x,
3794                                                           view->drag_info.start.y,
3795                                                           event->x_root,
3796                                                           event->y_root);
3797                         view->drag_info.in_drag = start;
3798                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3799                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3800                         /* Set 100 to choose how long it takes to build up momentum */
3801                         /* Clear out previous momentum info: */
3802                         for (i = 0; i < DRAG_HISTORY; i++) {
3803                                 view->drag_info.buffer[i].x = event->x;
3804                                 view->drag_info.buffer[i].y = event->y;
3805                         }
3806                         view->drag_info.momentum.x = 0;
3807                         view->drag_info.momentum.y = 0;
3808                 }
3809
3810                 if (view->drag_info.in_drag) {
3811                         int dx, dy;
3812                         gdouble dhadj_value, dvadj_value;
3813
3814                         view->drag_info.buffer[0].x = event->x;
3815                         view->drag_info.buffer[0].y = event->y;
3816
3817                         dx = event->x_root - view->drag_info.start.x;
3818                         dy = event->y_root - view->drag_info.start.y;
3819
3820                         dhadj_value = view->hadjustment->page_size *
3821                                       (gdouble)dx / widget->allocation.width;
3822                         dvadj_value = view->vadjustment->page_size *
3823                                       (gdouble)dy / widget->allocation.height;
3824
3825                         /* clamp scrolling to visible area */
3826                         gtk_adjustment_set_value (view->hadjustment,
3827                                                   MIN(view->drag_info.hadj - dhadj_value,
3828                                                       view->hadjustment->upper -
3829                                                       view->hadjustment->page_size));
3830                         gtk_adjustment_set_value (view->vadjustment,
3831                                                   MIN(view->drag_info.vadj - dvadj_value,
3832                                                       view->vadjustment->upper -
3833                                                       view->vadjustment->page_size));
3834
3835                         return TRUE;
3836                 }
3837
3838                 break;
3839         default:
3840                 ev_view_handle_cursor_over_xy (view, x, y);
3841         }
3842
3843         return FALSE;
3844 }
3845
3846 static gboolean
3847 ev_view_button_release_event (GtkWidget      *widget,
3848                               GdkEventButton *event)
3849 {
3850         EvView *view = EV_VIEW (widget);
3851         EvLink *link = NULL;
3852
3853         view->image_dnd_info.in_drag = FALSE;
3854
3855         if (view->scroll_info.autoscrolling) {
3856                 ev_view_autoscroll_stop (view);
3857                 view->pressed_button = -1;
3858
3859                 return TRUE;
3860         }
3861
3862         if (view->drag_info.in_drag) {
3863                 view->drag_info.release_timeout_id =
3864                         g_timeout_add (20,
3865                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3866         }
3867
3868         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3869                 link = ev_view_get_link_at_location (view, event->x, event->y);
3870         }
3871
3872         view->drag_info.in_drag = FALSE;
3873
3874         if (view->pressed_button == 2) {
3875                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3876         }
3877
3878         view->pressed_button = -1;
3879
3880         if (view->selection_scroll_id) {
3881             g_source_remove (view->selection_scroll_id);
3882             view->selection_scroll_id = 0;
3883         }
3884         if (view->selection_update_id) {
3885             g_source_remove (view->selection_update_id);
3886             view->selection_update_id = 0;
3887         }
3888
3889         if (view->selection_info.selections) {
3890                 clear_link_selected (view);
3891                 ev_view_update_primary_selection (view);
3892
3893                 if (view->selection_info.in_drag) {
3894                         clear_selection (view);
3895                         gtk_widget_queue_draw (widget);
3896                 }
3897
3898                 view->selection_info.in_drag = FALSE;
3899         } else if (link) {
3900                 if (event->button == 2) {
3901                         EvLinkAction    *action;
3902                         EvLinkActionType type;
3903
3904                         action = ev_link_get_action (link);
3905                         if (!action)
3906                                 return FALSE;
3907
3908                         type = ev_link_action_get_action_type (action);
3909                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3910                                 g_signal_emit (view,
3911                                                signals[SIGNAL_EXTERNAL_LINK],
3912                                                0, action);
3913                         }
3914                 } else {
3915                         ev_view_handle_link (view, link);
3916                 }
3917         } else if (view->presentation) {
3918                 switch (event->button) {
3919                         case 1:
3920                                 ev_view_next_page (view);
3921                                 return TRUE;
3922                         case 3:
3923                                 ev_view_previous_page (view);
3924                                 return TRUE;
3925                 }
3926         }
3927
3928         return FALSE;
3929 }
3930
3931 /* Goto Window */
3932 /* Cut and paste from gtkwindow.c */
3933 static void
3934 send_focus_change (GtkWidget *widget,
3935                    gboolean   in)
3936 {
3937         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3938
3939         g_object_ref (widget);
3940
3941         if (in)
3942                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3943         else
3944                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3945
3946         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3947         fevent->focus_change.window = g_object_ref (widget->window);
3948         fevent->focus_change.in = in;
3949
3950         gtk_widget_event (widget, fevent);
3951
3952         g_object_notify (G_OBJECT (widget), "has-focus");
3953
3954         g_object_unref (widget);
3955         gdk_event_free (fevent);
3956 }
3957
3958 static void
3959 ev_view_goto_window_hide (EvView *view)
3960 {
3961         /* send focus-in event */
3962         send_focus_change (view->goto_entry, FALSE);
3963         gtk_widget_hide (view->goto_window);
3964         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3965 }
3966
3967 static gboolean
3968 ev_view_goto_window_delete_event (GtkWidget   *widget,
3969                                   GdkEventAny *event,
3970                                   EvView      *view)
3971 {
3972         ev_view_goto_window_hide (view);
3973
3974         return TRUE;
3975 }
3976
3977 static gboolean
3978 key_is_numeric (guint keyval)
3979 {
3980         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
3981                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
3982 }
3983
3984 static gboolean
3985 ev_view_goto_window_key_press_event (GtkWidget   *widget,
3986                                      GdkEventKey *event,
3987                                      EvView      *view)
3988 {
3989         switch (event->keyval) {
3990                 case GDK_Escape:
3991                 case GDK_Tab:
3992                 case GDK_KP_Tab:
3993                 case GDK_ISO_Left_Tab:
3994                         ev_view_goto_window_hide (view);
3995                         return TRUE;
3996                 case GDK_Return:
3997                 case GDK_KP_Enter:
3998                 case GDK_ISO_Enter:
3999                 case GDK_BackSpace:
4000                 case GDK_Delete:
4001                         return FALSE;
4002                 default:
4003                         if (!key_is_numeric (event->keyval))
4004                                 return TRUE;
4005         }
4006
4007         return FALSE;
4008 }
4009
4010 static gboolean
4011 ev_view_goto_window_button_press_event (GtkWidget      *widget,
4012                                         GdkEventButton *event,
4013                                         EvView         *view)
4014 {
4015         ev_view_goto_window_hide (view);
4016
4017         return TRUE;
4018 }
4019
4020 static void
4021 ev_view_goto_entry_activate (GtkEntry *entry,
4022                              EvView   *view)
4023 {
4024         const gchar *text;
4025         gint         page;
4026
4027         text = gtk_entry_get_text (entry);
4028         page = atoi (text) - 1;
4029
4030         ev_view_goto_window_hide (view);
4031
4032         if (page >= 0 && page < ev_document_get_n_pages (view->document)) {
4033                 ev_document_model_set_page (view->model, page);
4034         }
4035 }
4036
4037 static void
4038 ev_view_goto_window_create (EvView *view)
4039 {
4040         GtkWidget *frame, *hbox, *toplevel, *label;
4041
4042         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
4043
4044         if (view->goto_window) {
4045                 if (GTK_WINDOW (toplevel)->group)
4046                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
4047                                                      GTK_WINDOW (view->goto_window));
4048                 else if (GTK_WINDOW (view->goto_window)->group)
4049                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
4050                                                         GTK_WINDOW (view->goto_window));
4051                 return;
4052         }
4053
4054         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
4055         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
4056                                gtk_widget_get_screen (GTK_WIDGET (view)));
4057
4058         if (GTK_WINDOW (toplevel)->group)
4059                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
4060                                              GTK_WINDOW (view->goto_window));
4061
4062         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
4063
4064         g_signal_connect (view->goto_window, "delete_event",
4065                           G_CALLBACK (ev_view_goto_window_delete_event),
4066                           view);
4067         g_signal_connect (view->goto_window, "key_press_event",
4068                           G_CALLBACK (ev_view_goto_window_key_press_event),
4069                           view);
4070         g_signal_connect (view->goto_window, "button_press_event",
4071                           G_CALLBACK (ev_view_goto_window_button_press_event),
4072                           view);
4073
4074         frame = gtk_frame_new (NULL);
4075         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
4076         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
4077         gtk_widget_show (frame);
4078
4079         hbox = gtk_hbox_new (FALSE, 0);
4080         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
4081         gtk_container_add (GTK_CONTAINER (frame), hbox);
4082         gtk_widget_show (hbox);
4083
4084         label = gtk_label_new(_("Jump to page:"));
4085         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
4086         gtk_widget_show (label);
4087         gtk_widget_realize (label);
4088
4089         view->goto_entry = gtk_entry_new ();
4090         g_signal_connect (view->goto_entry, "activate",
4091                           G_CALLBACK (ev_view_goto_entry_activate),
4092                           view);
4093         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
4094         gtk_widget_show (view->goto_entry);
4095         gtk_widget_realize (view->goto_entry);
4096 }
4097
4098 static void
4099 ev_view_goto_entry_grab_focus (EvView *view)
4100 {
4101         GtkWidgetClass *entry_parent_class;
4102
4103         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
4104         (entry_parent_class->grab_focus) (view->goto_entry);
4105
4106         send_focus_change (view->goto_entry, TRUE);
4107 }
4108
4109 static void
4110 ev_view_goto_window_send_key_event (EvView   *view,
4111                                     GdkEvent *event)
4112 {
4113         GdkEventKey *new_event;
4114         GdkScreen   *screen;
4115
4116         /* Move goto window off screen */
4117         screen = gtk_widget_get_screen (GTK_WIDGET (view));
4118         gtk_window_move (GTK_WINDOW (view->goto_window),
4119                          gdk_screen_get_width (screen) + 1,
4120                          gdk_screen_get_height (screen) + 1);
4121         gtk_widget_show (view->goto_window);
4122
4123         new_event = (GdkEventKey *) gdk_event_copy (event);
4124         g_object_unref (new_event->window);
4125         new_event->window = g_object_ref (view->goto_window->window);
4126         gtk_widget_realize (view->goto_window);
4127
4128         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
4129         gdk_event_free ((GdkEvent *)new_event);
4130         gtk_widget_hide (view->goto_window);
4131 }
4132
4133 static gboolean
4134 ev_view_key_press_event (GtkWidget   *widget,
4135                          GdkEventKey *event)
4136 {
4137         EvView *view = EV_VIEW (widget);
4138         EvPresentationState current;
4139
4140         if (!view->document)
4141                 return FALSE;
4142
4143         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
4144                 /* Forward key events to current focused window child */
4145                 if (view->window_child_focus) {
4146                         GdkEventKey *new_event;
4147                         gboolean     handled;
4148
4149                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
4150                         g_object_unref (new_event->window);
4151                         new_event->window = g_object_ref (view->window_child_focus->window->window);
4152                         gtk_widget_realize (view->window_child_focus->window);
4153                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
4154                         gdk_event_free ((GdkEvent *)new_event);
4155
4156                         return handled;
4157                 }
4158
4159                 return FALSE;
4160         }
4161
4162         if (!view->presentation ||
4163             view->presentation_state == EV_PRESENTATION_END)
4164                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4165
4166
4167         current = view->presentation_state;
4168
4169         switch (event->keyval) {
4170                 case GDK_b:
4171                 case GDK_B:
4172                 case GDK_period:
4173                 case GDK_KP_Decimal:
4174                         view->presentation_state =
4175                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
4176                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
4177                         break;
4178                 case GDK_w:
4179                 case GDK_W:
4180                         view->presentation_state =
4181                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
4182                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
4183                         break;
4184                 default:
4185                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
4186                             view->presentation_state == EV_PRESENTATION_WHITE) {
4187                                 view->presentation_state = EV_PRESENTATION_NORMAL;
4188                         }
4189         }
4190
4191         if (current == view->presentation_state) {
4192                 if (ev_document_get_n_pages (view->document) > 1 &&
4193                     key_is_numeric (event->keyval)) {
4194                         gint x, y;
4195
4196                         ev_view_goto_window_create (view);
4197                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
4198                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4199                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
4200                         gtk_widget_show (view->goto_window);
4201                         ev_view_goto_entry_grab_focus (view);
4202
4203                         return TRUE;
4204                 }
4205
4206                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4207         }
4208
4209         switch (view->presentation_state) {
4210                 case EV_PRESENTATION_NORMAL:
4211                 case EV_PRESENTATION_BLACK:
4212                         gdk_window_set_background (view->layout.bin_window,
4213                                                    &widget->style->black);
4214                         break;
4215                 case EV_PRESENTATION_WHITE:
4216                         gdk_window_set_background (view->layout.bin_window,
4217                                                    &widget->style->white);
4218                         break;
4219                 default:
4220                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4221         }
4222
4223         gtk_widget_queue_draw (widget);
4224         return TRUE;
4225 }
4226
4227 static gint
4228 ev_view_focus_in (GtkWidget     *widget,
4229                   GdkEventFocus *event)
4230 {
4231         if (EV_VIEW (widget)->pixbuf_cache)
4232                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4233         gtk_widget_queue_draw (widget);
4234
4235         return FALSE;
4236 }
4237
4238 static gint
4239 ev_view_focus_out (GtkWidget     *widget,
4240                      GdkEventFocus *event)
4241 {
4242         if (EV_VIEW (widget)->goto_window)
4243                 ev_view_goto_window_hide (EV_VIEW (widget));
4244
4245         if (EV_VIEW (widget)->pixbuf_cache)
4246                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4247         gtk_widget_queue_draw (widget);
4248
4249         return FALSE;
4250 }
4251
4252 static gboolean
4253 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4254 {
4255         EvView *view = EV_VIEW (widget);
4256
4257         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
4258                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4259
4260         return FALSE;
4261 }
4262
4263 static gboolean
4264 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4265 {
4266         EvView *view = EV_VIEW (widget);
4267
4268         ev_view_handle_cursor_over_xy (view, event->x, event->y);
4269
4270         return FALSE;
4271 }
4272
4273 static void
4274 ev_view_style_set (GtkWidget *widget,
4275                    GtkStyle  *old_style)
4276 {
4277         if (EV_VIEW (widget)->pixbuf_cache)
4278                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4279
4280         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
4281 }
4282
4283 /*** Drawing ***/
4284
4285 static guint32
4286 ev_gdk_color_to_rgb (const GdkColor *color)
4287 {
4288   guint32 result;
4289   result = (0xff0000 | (color->red & 0xff00));
4290   result <<= 8;
4291   result |= ((color->green & 0xff00) | (color->blue >> 8));
4292   return result;
4293 }
4294
4295 static void
4296 draw_rubberband (GtkWidget *widget, GdkWindow *window,
4297                  const GdkRectangle *rect, guchar alpha)
4298 {
4299         GdkGC *gc;
4300         GdkPixbuf *pixbuf;
4301         GdkColor *fill_color_gdk;
4302         guint fill_color;
4303
4304         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
4305         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
4306
4307         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
4308                                  rect->width, rect->height);
4309         gdk_pixbuf_fill (pixbuf, fill_color);
4310
4311         gdk_draw_pixbuf (window, NULL, pixbuf,
4312                          0, 0,
4313                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4314                          rect->width, rect->height,
4315                          GDK_RGB_DITHER_NONE,
4316                          0, 0);
4317
4318         g_object_unref (pixbuf);
4319
4320         gc = gdk_gc_new (window);
4321         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
4322         gdk_draw_rectangle (window, gc, FALSE,
4323                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4324                             rect->width - 1,
4325                             rect->height - 1);
4326         g_object_unref (gc);
4327
4328         gdk_color_free (fill_color_gdk);
4329 }
4330
4331
4332 static void
4333 highlight_find_results (EvView *view, int page)
4334 {
4335         gint i, n_results = 0;
4336
4337         n_results = ev_view_find_get_n_results (view, page);
4338
4339         for (i = 0; i < n_results; i++) {
4340                 EvRectangle *rectangle;
4341                 GdkRectangle view_rectangle;
4342                 guchar alpha;
4343
4344                 if (i == view->find_result && page == view->current_page) {
4345                         alpha = 0x90;
4346                 } else {
4347                         alpha = 0x20;
4348                 }
4349
4350                 rectangle = ev_view_find_get_result (view, page, i);
4351                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4352                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4353                                  &view_rectangle, alpha);
4354         }
4355 }
4356
4357 static void
4358 draw_loading_text (EvView       *view,
4359                    GdkRectangle *page_area,
4360                    GdkRectangle *expose_area)
4361 {
4362         cairo_t *cr;
4363         gint     width, height;
4364
4365         if (!view->loading_text) {
4366                 const gchar *loading_text = _("Loading...");
4367                 PangoLayout *layout;
4368                 PangoFontDescription *font_desc;
4369                 PangoRectangle logical_rect;
4370                 gint target_width;
4371                 gdouble real_scale;
4372
4373                 ev_document_fc_mutex_lock ();
4374
4375                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4376
4377                 font_desc = pango_font_description_new ();
4378
4379                 /* We set the font to be 10 points, get the size, and scale appropriately */
4380                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4381                 pango_layout_set_font_description (layout, font_desc);
4382                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4383
4384                 target_width = MAX (page_area->width / 2, 1);
4385                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4386                 pango_font_description_set_size (font_desc, (int)real_scale);
4387                 pango_layout_set_font_description (layout, font_desc);
4388                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4389
4390                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4391                                                                  logical_rect.width,
4392                                                                  logical_rect.height);
4393                 cr = cairo_create (view->loading_text);
4394                 cairo_set_source_rgb (cr,
4395                                       155 / (double)255,
4396                                       155 / (double)255,
4397                                       155 / (double)255);
4398                 pango_cairo_show_layout (cr, layout);
4399                 cairo_destroy (cr);
4400
4401                 pango_font_description_free (font_desc);
4402                 g_object_unref (layout);
4403
4404                 ev_document_fc_mutex_unlock ();
4405         }
4406
4407         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4408         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4409
4410         cr = gdk_cairo_create (view->layout.bin_window);
4411         cairo_translate (cr,
4412                          page_area->x + width,
4413                          page_area->y + height);
4414         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4415         cairo_paint (cr);
4416         cairo_destroy (cr);
4417 }
4418
4419 static void
4420 draw_one_page (EvView       *view,
4421                gint          page,
4422                cairo_t      *cr,
4423                GdkRectangle *page_area,
4424                GtkBorder    *border,
4425                GdkRectangle *expose_area,
4426                gboolean     *page_ready)
4427 {
4428         GdkRectangle overlap;
4429         GdkRectangle real_page_area;
4430
4431         g_assert (view->document);
4432
4433         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4434                 return;
4435
4436         /* Render the document itself */
4437         real_page_area = *page_area;
4438
4439         real_page_area.x += border->left;
4440         real_page_area.y += border->top;
4441         real_page_area.width -= (border->left + border->right);
4442         real_page_area.height -= (border->top + border->bottom);
4443         *page_ready = TRUE;
4444
4445         if (!view->presentation) {
4446                 gint current_page;
4447
4448                 current_page = ev_document_model_get_page (view->model);
4449                 ev_document_misc_paint_one_page (view->layout.bin_window,
4450                                                  GTK_WIDGET (view),
4451                                                  page_area, border,
4452                                                  page == current_page);
4453         }
4454
4455         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4456                 gint             width, height;
4457                 gint             page_width, page_height;
4458                 cairo_surface_t *page_surface = NULL;
4459                 gint             selection_width, selection_height;
4460                 cairo_surface_t *selection_surface = NULL;
4461
4462                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4463
4464                 if (!page_surface) {
4465                         if (!view->presentation) {
4466                                 draw_loading_text (view,
4467                                                    &real_page_area,
4468                                                    expose_area);
4469                         }
4470
4471                         *page_ready = FALSE;
4472
4473                         return;
4474                 }
4475
4476                 ev_view_get_page_size (view, page, &width, &height);
4477
4478                 page_width = cairo_image_surface_get_width (page_surface);
4479                 page_height = cairo_image_surface_get_height (page_surface);
4480
4481                 cairo_save (cr);
4482                 cairo_translate (cr, overlap.x, overlap.y);
4483
4484                 if (width != page_width || height != page_height) {
4485                         cairo_pattern_set_filter (cairo_get_source (cr),
4486                                                   CAIRO_FILTER_FAST);
4487                         cairo_scale (cr,
4488                                      (gdouble)width / page_width,
4489                                      (gdouble)height / page_height);
4490                 }
4491
4492                 cairo_surface_set_device_offset (page_surface,
4493                                                  overlap.x - real_page_area.x,
4494                                                  overlap.y - real_page_area.y);
4495                 cairo_set_source_surface (cr, page_surface, 0, 0);
4496                 cairo_paint (cr);
4497                 cairo_restore (cr);
4498
4499                 /* Get the selection pixbuf iff we have something to draw */
4500                 if (find_selection_for_page (view, page) &&
4501                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4502                         selection_surface =
4503                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4504                                                                        page,
4505                                                                        view->scale,
4506                                                                        NULL);
4507                 }
4508
4509                 if (!selection_surface) {
4510                         return;
4511                 }
4512
4513                 selection_width = cairo_image_surface_get_width (selection_surface);
4514                 selection_height = cairo_image_surface_get_height (selection_surface);
4515
4516                 cairo_save (cr);
4517                 cairo_translate (cr, overlap.x, overlap.y);
4518
4519                 if (width != selection_width || height != selection_height) {
4520                         cairo_pattern_set_filter (cairo_get_source (cr),
4521                                                   CAIRO_FILTER_FAST);
4522                         cairo_scale (cr,
4523                                      (gdouble)width / selection_width,
4524                                      (gdouble)height / selection_height);
4525                 }
4526
4527                 cairo_surface_set_device_offset (selection_surface,
4528                                                  overlap.x - real_page_area.x,
4529                                                  overlap.y - real_page_area.y);
4530                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4531                 cairo_paint (cr);
4532                 cairo_restore (cr);
4533         }
4534 }
4535
4536 /*** GObject functions ***/
4537
4538 static void
4539 ev_view_finalize (GObject *object)
4540 {
4541         EvView *view = EV_VIEW (object);
4542
4543         clear_selection (view);
4544         clear_link_selected (view);
4545
4546         if (view->image_dnd_info.image)
4547                 g_object_unref (view->image_dnd_info.image);
4548         view->image_dnd_info.image = NULL;
4549
4550         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4551 }
4552
4553 static void
4554 ev_view_destroy (GtkObject *object)
4555 {
4556         EvView *view = EV_VIEW (object);
4557
4558         if (view->model) {
4559                 g_object_unref (view->model);
4560                 view->model = NULL;
4561         }
4562
4563         if (view->document) {
4564                 g_object_unref (view->document);
4565                 view->document = NULL;
4566         }
4567
4568         if (view->pixbuf_cache) {
4569                 g_object_unref (view->pixbuf_cache);
4570                 view->pixbuf_cache = NULL;
4571         }
4572
4573         if (view->page_cache) {
4574                 g_object_unref (view->page_cache);
4575                 view->page_cache = NULL;
4576         }
4577
4578         if (view->goto_window) {
4579                 gtk_widget_destroy (view->goto_window);
4580                 view->goto_window = NULL;
4581                 view->goto_entry = NULL;
4582         }
4583
4584         ev_view_window_children_free (view);
4585
4586         if (view->selection_scroll_id) {
4587             g_source_remove (view->selection_scroll_id);
4588             view->selection_scroll_id = 0;
4589         }
4590
4591         if (view->selection_update_id) {
4592             g_source_remove (view->selection_update_id);
4593             view->selection_update_id = 0;
4594         }
4595
4596         if (view->loading_text) {
4597                 cairo_surface_destroy (view->loading_text);
4598                 view->loading_text = NULL;
4599         }
4600
4601         if (view->scroll_info.timeout_id) {
4602             g_source_remove (view->scroll_info.timeout_id);
4603             view->scroll_info.timeout_id = 0;
4604         }
4605
4606         if (view->drag_info.drag_timeout_id) {
4607                 g_source_remove (view->drag_info.drag_timeout_id);
4608                 view->drag_info.drag_timeout_id = 0;
4609         }
4610
4611         if (view->drag_info.release_timeout_id) {
4612                 g_source_remove (view->drag_info.release_timeout_id);
4613                 view->drag_info.release_timeout_id = 0;
4614         }
4615
4616         ev_view_presentation_transition_stop (view);
4617
4618         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4619
4620         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4621 }
4622
4623 static void
4624 ev_view_set_property (GObject      *object,
4625                       guint         prop_id,
4626                       const GValue *value,
4627                       GParamSpec   *pspec)
4628 {
4629         EvView *view = EV_VIEW (object);
4630
4631         switch (prop_id) {
4632                 case PROP_CONTINUOUS:
4633                         ev_view_set_continuous (view, g_value_get_boolean (value));
4634                         break;
4635                 case PROP_DUAL_PAGE:
4636                         ev_view_set_dual_page (view, g_value_get_boolean (value));
4637                         break;
4638                 case PROP_FULLSCREEN:
4639                         ev_view_set_fullscreen (view, g_value_get_boolean (value));
4640                         break;
4641                 case PROP_PRESENTATION:
4642                         ev_view_set_presentation (view, g_value_get_boolean (value));
4643                         break;
4644                 case PROP_SIZING_MODE:
4645                         ev_view_set_sizing_mode (view, g_value_get_enum (value));
4646                         break;
4647                 case PROP_ZOOM:
4648                         ev_view_set_zoom (view, g_value_get_double (value));
4649                         break;
4650                 case PROP_ROTATION:
4651                         ev_view_set_rotation (view, g_value_get_int (value));
4652                         break;
4653                 default:
4654                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4655         }
4656 }
4657
4658 static AtkObject *
4659 ev_view_get_accessible (GtkWidget *widget)
4660 {
4661         static gboolean first_time = TRUE;
4662
4663         if (first_time) {
4664                 AtkObjectFactory *factory;
4665                 AtkRegistry *registry;
4666                 GType derived_type;
4667                 GType derived_atk_type;
4668
4669                 /*
4670                  * Figure out whether accessibility is enabled by looking at the
4671                  * type of the accessible object which would be created for
4672                  * the parent type of EvView.
4673                  */
4674                 derived_type = g_type_parent (EV_TYPE_VIEW);
4675
4676                 registry = atk_get_default_registry ();
4677                 factory = atk_registry_get_factory (registry,
4678                                                     derived_type);
4679                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4680                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4681                         atk_registry_set_factory_type (registry,
4682                                                        EV_TYPE_VIEW,
4683                                                        ev_view_accessible_factory_get_type ());
4684                 first_time = FALSE;
4685         }
4686         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4687 }
4688
4689 static void
4690 ev_view_get_property (GObject *object,
4691                       guint prop_id,
4692                       GValue *value,
4693                       GParamSpec *pspec)
4694 {
4695         EvView *view = EV_VIEW (object);
4696
4697         switch (prop_id) {
4698                 case PROP_CONTINUOUS:
4699                         g_value_set_boolean (value, view->continuous);
4700                         break;
4701                 case PROP_DUAL_PAGE:
4702                         g_value_set_boolean (value, view->dual_page);
4703                         break;
4704                 case PROP_FULLSCREEN:
4705                         g_value_set_boolean (value, view->fullscreen);
4706                         break;
4707                 case PROP_PRESENTATION:
4708                         g_value_set_boolean (value, view->presentation);
4709                         break;
4710                 case PROP_SIZING_MODE:
4711                         g_value_set_enum (value, view->sizing_mode);
4712                         break;
4713                 case PROP_ZOOM:
4714                         g_value_set_double (value, view->scale);
4715                         break;
4716                 case PROP_ROTATION:
4717                         g_value_set_int (value, view->rotation);
4718                         break;
4719                 case PROP_HAS_SELECTION:
4720                         g_value_set_boolean (value,
4721                                              view->selection_info.selections != NULL);
4722                         break;
4723                 default:
4724                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4725         }
4726 }
4727
4728 static void
4729 ev_view_class_init (EvViewClass *class)
4730 {
4731         GObjectClass *object_class = G_OBJECT_CLASS (class);
4732         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4733         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4734         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4735         GtkBindingSet *binding_set;
4736
4737         object_class->finalize = ev_view_finalize;
4738         object_class->set_property = ev_view_set_property;
4739         object_class->get_property = ev_view_get_property;
4740
4741         widget_class->expose_event = ev_view_expose_event;
4742         widget_class->button_press_event = ev_view_button_press_event;
4743         widget_class->motion_notify_event = ev_view_motion_notify_event;
4744         widget_class->button_release_event = ev_view_button_release_event;
4745         widget_class->key_press_event = ev_view_key_press_event;
4746         widget_class->focus_in_event = ev_view_focus_in;
4747         widget_class->focus_out_event = ev_view_focus_out;
4748         widget_class->get_accessible = ev_view_get_accessible;
4749         widget_class->size_request = ev_view_size_request;
4750         widget_class->size_allocate = ev_view_size_allocate;
4751         widget_class->realize = ev_view_realize;
4752         widget_class->scroll_event = ev_view_scroll_event;
4753         widget_class->enter_notify_event = ev_view_enter_notify_event;
4754         widget_class->leave_notify_event = ev_view_leave_notify_event;
4755         widget_class->style_set = ev_view_style_set;
4756         widget_class->drag_data_get = ev_view_drag_data_get;
4757         widget_class->drag_motion = ev_view_drag_motion;
4758         widget_class->popup_menu = ev_view_popup_menu;
4759         widget_class->query_tooltip = ev_view_query_tooltip;
4760
4761         gtk_object_class->destroy = ev_view_destroy;
4762
4763         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4764
4765         class->binding_activated = ev_view_scroll;
4766
4767         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4768                          G_TYPE_FROM_CLASS (object_class),
4769                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4770                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4771                          NULL, NULL,
4772                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4773                          G_TYPE_NONE, 2,
4774                          GTK_TYPE_SCROLL_TYPE,
4775                          G_TYPE_BOOLEAN);
4776         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4777                          G_TYPE_FROM_CLASS (object_class),
4778                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4779                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4780                          NULL, NULL,
4781                          g_cclosure_marshal_VOID__OBJECT,
4782                          G_TYPE_NONE, 1,
4783                          G_TYPE_OBJECT);
4784         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4785                          G_TYPE_FROM_CLASS (object_class),
4786                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4787                          G_STRUCT_OFFSET (EvViewClass, external_link),
4788                          NULL, NULL,
4789                          g_cclosure_marshal_VOID__OBJECT,
4790                          G_TYPE_NONE, 1,
4791                          G_TYPE_OBJECT);
4792         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4793                          G_TYPE_FROM_CLASS (object_class),
4794                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4795                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4796                          NULL, NULL,
4797                          g_cclosure_marshal_VOID__OBJECT,
4798                          G_TYPE_NONE, 1,
4799                          G_TYPE_OBJECT);
4800
4801
4802         g_object_class_install_property (object_class,
4803                                          PROP_CONTINUOUS,
4804                                          g_param_spec_boolean ("continuous",
4805                                                                "Continuous",
4806                                                                "Continuous scrolling mode",
4807                                                                TRUE,
4808                                                                G_PARAM_READWRITE));
4809
4810         g_object_class_install_property (object_class,
4811                                          PROP_DUAL_PAGE,
4812                                          g_param_spec_boolean ("dual-page",
4813                                                                "Dual Page",
4814                                                                "Two pages visible at once",
4815                                                                FALSE,
4816                                                                G_PARAM_READWRITE));
4817         g_object_class_install_property (object_class,
4818                                          PROP_FULLSCREEN,
4819                                          g_param_spec_boolean ("fullscreen",
4820                                                                "Full Screen",
4821                                                                "Draw page in a fullscreen fashion",
4822                                                                FALSE,
4823                                                                G_PARAM_READWRITE));
4824         g_object_class_install_property (object_class,
4825                                          PROP_PRESENTATION,
4826                                          g_param_spec_boolean ("presentation",
4827                                                                "Presentation",
4828                                                                "Draw page in presentation mode",
4829                                                                TRUE,
4830                                                                G_PARAM_READWRITE));
4831
4832         g_object_class_install_property (object_class,
4833                                          PROP_SIZING_MODE,
4834                                          g_param_spec_enum ("sizing-mode",
4835                                                             "Sizing Mode",
4836                                                             "Sizing Mode",
4837                                                             EV_TYPE_SIZING_MODE,
4838                                                             EV_SIZING_FIT_WIDTH,
4839                                                             G_PARAM_READWRITE));
4840
4841         g_object_class_install_property (object_class,
4842                                          PROP_ZOOM,
4843                                          g_param_spec_double ("zoom",
4844                                                               "Zoom factor",
4845                                                               "Zoom factor",
4846                                                               0,
4847                                                               G_MAXDOUBLE,
4848                                                               1.0,
4849                                                               G_PARAM_READWRITE));
4850         g_object_class_install_property (object_class,
4851                                          PROP_ROTATION,
4852                                          g_param_spec_double ("rotation",
4853                                                               "Rotation",
4854                                                               "Rotation",
4855                                                               0,
4856                                                               360,
4857                                                               0,
4858                                                               G_PARAM_READWRITE));
4859
4860         g_object_class_install_property (object_class,
4861                                          PROP_HAS_SELECTION,
4862                                          g_param_spec_boolean ("has-selection",
4863                                                                "Has selection",
4864                                                                "The view has selections",
4865                                                                FALSE,
4866                                                                G_PARAM_READABLE));
4867
4868         binding_set = gtk_binding_set_by_class (class);
4869
4870         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4871         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4872         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4873         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4874         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4875         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4876         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4877         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4878         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4879                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4880         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4881                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4882         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4883                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4884         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4885                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4886
4887 }
4888
4889 static void
4890 ev_view_init (EvView *view)
4891 {
4892         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4893
4894         view->start_page = -1;
4895         view->end_page = -1;
4896         view->spacing = 5;
4897         view->scale = 1.0;
4898         view->current_page = 0;
4899         view->pressed_button = -1;
4900         view->cursor = EV_VIEW_CURSOR_NORMAL;
4901         view->drag_info.in_drag = FALSE;
4902         view->scroll_info.autoscrolling = FALSE;
4903         view->selection_info.selections = NULL;
4904         view->selection_info.in_selection = FALSE;
4905         view->selection_info.in_drag = FALSE;
4906         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4907         view->continuous = TRUE;
4908         view->dual_page = FALSE;
4909         view->presentation = FALSE;
4910         view->presentation_state = EV_PRESENTATION_NORMAL;
4911         view->fullscreen = FALSE;
4912         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4913         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4914         view->jump_to_find_result = TRUE;
4915         view->highlight_find_results = FALSE;
4916
4917         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4918         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4919 }
4920
4921 /*** Callbacks ***/
4922
4923 static void
4924 ev_view_change_page (EvView *view,
4925                      gint    new_page,
4926                      gboolean start_transition)
4927 {
4928         gint x, y;
4929
4930         view->current_page = new_page;
4931         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4932
4933         if (view->presentation && start_transition)
4934                 ev_view_presentation_transition_start (view);
4935
4936         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4937         ev_view_handle_cursor_over_xy (view, x, y);
4938
4939         gtk_widget_queue_resize (GTK_WIDGET (view));
4940 }
4941
4942 static void
4943 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4944                                      EvView                *view)
4945 {
4946         g_object_unref (view->animation);
4947         view->animation = NULL;
4948         ev_view_change_page (view, view->current_page, TRUE);
4949 }
4950
4951 /**
4952  * ev_view_transition_animation_cancel:
4953  * @animation: Animation to finish
4954  * @view: An EvView
4955  *
4956  * Does almost the same as cancel, but without scheduling the transition.
4957  */
4958
4959 static void
4960 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4961                                      EvView                *view)
4962 {
4963         g_object_unref (view->animation);
4964         view->animation = NULL;
4965         ev_view_change_page (view, view->current_page, FALSE);
4966 }
4967
4968 static void
4969 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4970                                     gdouble                progress,
4971                                     EvView                *view)
4972 {
4973         gtk_widget_queue_draw (GTK_WIDGET (view));
4974 }
4975
4976 static void
4977 ev_view_presentation_animation_start (EvView *view,
4978                                       int     new_page)
4979 {
4980         EvTransitionEffect *effect = NULL;
4981         cairo_surface_t *surface;
4982
4983         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4984                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4985                                                             view->current_page);
4986         if (!effect)
4987                 return;
4988
4989         view->animation = ev_transition_animation_new (effect);
4990
4991         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4992         ev_transition_animation_set_origin_surface (view->animation, surface);
4993         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4994         if (surface)
4995                 ev_transition_animation_set_dest_surface (view->animation, surface);
4996
4997         g_signal_connect (view->animation, "frame",
4998                           G_CALLBACK (ev_view_transition_animation_frame), view);
4999         g_signal_connect (view->animation, "finished",
5000                           G_CALLBACK (ev_view_transition_animation_finish), view);
5001 }
5002
5003 static void
5004 job_finished_cb (EvPixbufCache *pixbuf_cache,
5005                  GdkRegion     *region,
5006                  EvView        *view)
5007 {
5008         if (view->animation) {
5009                 cairo_surface_t *surface;
5010
5011                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
5012                 ev_transition_animation_set_dest_surface (view->animation, surface);
5013         }
5014
5015         if (region) {
5016                 gdk_window_invalidate_region (view->layout.bin_window,
5017                                               region, TRUE);
5018         } else {
5019                 gtk_widget_queue_draw (GTK_WIDGET (view));
5020         }
5021 }
5022
5023 static void
5024 ev_view_page_changed_cb (EvDocumentModel *model,
5025                          gint             old_page,
5026                          gint             new_page,
5027                          EvView          *view)
5028 {
5029         if (!view->document)
5030                 return;
5031
5032         if (view->current_page != new_page) {
5033                 if (view->presentation)
5034                         ev_view_presentation_animation_start (view, new_page);
5035
5036                 ev_view_change_page (view, new_page, TRUE);
5037         } else {
5038                 gtk_widget_queue_draw (GTK_WIDGET (view));
5039         }
5040
5041         view->find_result = 0;
5042 }
5043
5044 static void
5045 on_adjustment_value_changed (GtkAdjustment *adjustment,
5046                              EvView        *view)
5047 {
5048         int dx = 0, dy = 0;
5049         gint x, y;
5050         GList *children, *l;
5051
5052         if (! GTK_WIDGET_REALIZED (view))
5053                 return;
5054
5055         if (view->hadjustment) {
5056                 dx = view->scroll_x - (int) view->hadjustment->value;
5057                 view->scroll_x = (int) view->hadjustment->value;
5058         } else {
5059                 view->scroll_x = 0;
5060         }
5061
5062         if (view->vadjustment) {
5063                 dy = view->scroll_y - (int) view->vadjustment->value;
5064                 view->scroll_y = (int) view->vadjustment->value;
5065         } else {
5066                 view->scroll_y = 0;
5067         }
5068
5069         children = gtk_container_get_children (GTK_CONTAINER (view));
5070         for (l = children; l && l->data; l = g_list_next (l)) {
5071                 gint       child_x, child_y;
5072                 GtkWidget *child = (GtkWidget *)l->data;
5073
5074                 gtk_container_child_get (GTK_CONTAINER (view),
5075                                          child,
5076                                          "x", &child_x,
5077                                          "y", &child_y,
5078                                          NULL);
5079                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
5080         }
5081         g_list_free (children);
5082
5083         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
5084                 EvViewWindowChild *child;
5085
5086                 child = (EvViewWindowChild *)l->data;
5087
5088                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
5089         }
5090
5091         if (view->pending_resize)
5092                 gtk_widget_queue_draw (GTK_WIDGET (view));
5093         else
5094                 gdk_window_scroll (view->layout.bin_window, dx, dy);
5095
5096         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5097         ev_view_handle_cursor_over_xy (view, x, y);
5098
5099         if (view->document)
5100                 view_update_range_and_current_page (view);
5101 }
5102
5103 GtkWidget*
5104 ev_view_new (void)
5105 {
5106         GtkWidget *view;
5107
5108         view = g_object_new (EV_TYPE_VIEW, NULL);
5109
5110         return view;
5111 }
5112
5113 static void
5114 setup_caches (EvView *view)
5115 {
5116         gboolean inverted_colors;
5117
5118         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
5119         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
5120         view->page_cache = ev_page_cache_new (view->document);
5121         inverted_colors = ev_document_model_get_inverted_colors (view->model);
5122         ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
5123         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
5124 }
5125
5126 static void
5127 clear_caches (EvView *view)
5128 {
5129         if (view->pixbuf_cache) {
5130                 g_object_unref (view->pixbuf_cache);
5131                 view->pixbuf_cache = NULL;
5132         }
5133
5134         if (view->page_cache) {
5135                 g_object_unref (view->page_cache);
5136                 view->page_cache = NULL;
5137         }
5138 }
5139
5140 void
5141 ev_view_set_loading (EvView       *view,
5142                      gboolean      loading)
5143 {
5144         view->loading = loading;
5145         gtk_widget_queue_draw (GTK_WIDGET (view));
5146 }
5147
5148 static gboolean
5149 ev_view_autoscroll_cb (EvView *view)
5150 {
5151         gdouble speed, value;
5152
5153         /* If the user stops autoscrolling, autoscrolling will be
5154          * set to false but the timeout will continue; stop the timeout: */
5155         if (!view->scroll_info.autoscrolling) {
5156                 view->scroll_info.timeout_id = 0;
5157                 return FALSE;
5158         }
5159
5160         if (view->scroll_info.last_y > view->scroll_info.start_y &&
5161                 (view->scroll_info.last_y < view->scroll_info.start_y))
5162                 return TRUE;
5163
5164         /* Replace 100 with your speed of choice: The lower the faster.
5165          * Replace 3 with another speed of choice: The higher, the faster it accelerated
5166          *      based on the distance of the starting point from the mouse
5167          * (All also effected by the timeout interval of this callback) */
5168
5169         if (view->scroll_info.start_y > view->scroll_info.last_y)
5170                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
5171         else
5172                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
5173
5174         value = gtk_adjustment_get_value (view->vadjustment);
5175         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
5176         gtk_adjustment_set_value (view->vadjustment, value);
5177
5178         return TRUE;
5179
5180 }
5181
5182 void
5183 ev_view_autoscroll_start (EvView *view)
5184 {
5185         gint x, y;
5186
5187         g_return_if_fail (EV_IS_VIEW (view));
5188
5189         if (view->scroll_info.autoscrolling)
5190                 return;
5191
5192         view->scroll_info.autoscrolling = TRUE;
5193         view->scroll_info.timeout_id =
5194                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
5195                                view);
5196
5197         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5198         ev_view_handle_cursor_over_xy (view, x, y);
5199 }
5200
5201 void
5202 ev_view_autoscroll_stop (EvView *view)
5203 {
5204         gint x, y;
5205
5206         g_return_if_fail (EV_IS_VIEW (view));
5207
5208         if (!view->scroll_info.autoscrolling)
5209                 return;
5210
5211         view->scroll_info.autoscrolling = FALSE;
5212         if (view->scroll_info.timeout_id) {
5213                 g_source_remove (view->scroll_info.timeout_id);
5214                 view->scroll_info.timeout_id = 0;
5215         }
5216
5217         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5218         ev_view_handle_cursor_over_xy (view, x, y);
5219 }
5220
5221 static void
5222 ev_view_document_changed_cb (EvDocumentModel *model,
5223                              GParamSpec      *pspec,
5224                              EvView          *view)
5225 {
5226         EvDocument *document = ev_document_model_get_document (model);
5227
5228         view->loading = FALSE;
5229
5230         if (document != view->document) {
5231                 gint current_page;
5232
5233                 clear_caches (view);
5234
5235                 if (view->document) {
5236                         g_object_unref (view->document);
5237                 }
5238
5239                 view->document = document;
5240                 view->find_result = 0;
5241
5242                 if (view->document) {
5243                         g_object_ref (view->document);
5244                         setup_caches (view);
5245                 }
5246
5247                 current_page = ev_document_model_get_page (model);
5248                 if (view->current_page != current_page) {
5249                         ev_view_change_page (view, current_page, TRUE);
5250                 } else {
5251                         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
5252                         gtk_widget_queue_resize (GTK_WIDGET (view));
5253                 }
5254         }
5255 }
5256
5257 static void
5258 ev_view_rotation_changed_cb (EvDocumentModel *model,
5259                              GParamSpec      *pspec,
5260                              EvView          *view)
5261 {
5262         gint rotation = ev_document_model_get_rotation (model);
5263
5264         ev_view_set_rotation (view, rotation);
5265
5266         if (view->pixbuf_cache) {
5267                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5268                 if (!ev_document_is_page_size_uniform (view->document))
5269                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5270                 gtk_widget_queue_resize (GTK_WIDGET (view));
5271         }
5272
5273         ev_view_remove_all (view);
5274
5275         if (rotation != 0)
5276                 clear_selection (view);
5277 }
5278
5279 static void
5280 ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
5281                                     GParamSpec      *pspec,
5282                                     EvView          *view)
5283 {
5284         if (view->pixbuf_cache) {
5285                 gboolean inverted_colors;
5286
5287                 inverted_colors = ev_document_model_get_inverted_colors (model);
5288                 ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
5289                 gtk_widget_queue_draw (GTK_WIDGET (view));
5290         }
5291 }
5292
5293 static void
5294 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
5295                                 GParamSpec      *pspec,
5296                                 EvView          *view)
5297 {
5298         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
5299
5300         ev_view_set_sizing_mode (view, mode);
5301
5302         if (mode != EV_SIZING_FREE)
5303                 gtk_widget_queue_resize (GTK_WIDGET (view));
5304 }
5305
5306 #define EPSILON 0.0000001
5307 static void
5308 ev_view_scale_changed_cb (EvDocumentModel *model,
5309                           GParamSpec      *pspec,
5310                           EvView          *view)
5311 {
5312         gdouble scale = ev_document_model_get_scale (model);
5313
5314         if (ABS (view->scale - scale) < EPSILON)
5315                 return;
5316
5317         if (view->loading_text) {
5318                 cairo_surface_destroy (view->loading_text);
5319                 view->loading_text = NULL;
5320         }
5321
5322         ev_view_set_zoom (view, scale);
5323
5324         view->pending_resize = TRUE;
5325         if (view->sizing_mode == EV_SIZING_FREE)
5326                 gtk_widget_queue_resize (GTK_WIDGET (view));
5327 }
5328
5329 static void
5330 ev_view_continuous_changed_cb (EvDocumentModel *model,
5331                                GParamSpec      *pspec,
5332                                EvView          *view)
5333 {
5334         gboolean continuous = ev_document_model_get_continuous (model);
5335
5336         ev_view_set_continuous (view, continuous);
5337         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5338         gtk_widget_queue_resize (GTK_WIDGET (view));
5339 }
5340
5341 static void
5342 ev_view_dual_page_changed_cb (EvDocumentModel *model,
5343                               GParamSpec      *pspec,
5344                               EvView          *view)
5345 {
5346         gboolean dual_page = ev_document_model_get_dual_page (model);
5347
5348         ev_view_set_dual_page (view, dual_page);
5349         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5350         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5351          * preload_cache_size to be 2 if dual_page is set.
5352          */
5353         gtk_widget_queue_resize (GTK_WIDGET (view));
5354 }
5355
5356 static void
5357 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
5358                                GParamSpec      *pspec,
5359                                EvView          *view)
5360 {
5361         gboolean fullscreen = ev_document_model_get_fullscreen (model);
5362
5363         ev_view_set_fullscreen (view, fullscreen);
5364         gtk_widget_queue_resize (GTK_WIDGET (view));
5365 }
5366
5367 void
5368 ev_view_set_model (EvView          *view,
5369                    EvDocumentModel *model)
5370 {
5371         g_return_if_fail (EV_IS_VIEW (view));
5372         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
5373
5374         if (model == view->model)
5375                 return;
5376
5377         if (view->model) {
5378                 g_signal_handlers_disconnect_by_func (view->model,
5379                                                       ev_view_document_changed_cb,
5380                                                       view);
5381                 g_signal_handlers_disconnect_by_func (view->model,
5382                                                       ev_view_page_changed_cb,
5383                                                       view);
5384                 g_object_unref (view->model);
5385         }
5386         view->model = g_object_ref (model);
5387         g_signal_connect (view->model, "notify::document",
5388                           G_CALLBACK (ev_view_document_changed_cb),
5389                           view);
5390         g_signal_connect (view->model, "notify::rotation",
5391                           G_CALLBACK (ev_view_rotation_changed_cb),
5392                           view);
5393         g_signal_connect (view->model, "notify::inverted-colors",
5394                           G_CALLBACK (ev_view_inverted_colors_changed_cb),
5395                           view);
5396         g_signal_connect (view->model, "notify::sizing-mode",
5397                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
5398                           view);
5399         g_signal_connect (view->model, "notify::scale",
5400                           G_CALLBACK (ev_view_scale_changed_cb),
5401                           view);
5402         g_signal_connect (view->model, "notify::continuous",
5403                           G_CALLBACK (ev_view_continuous_changed_cb),
5404                           view);
5405         g_signal_connect (view->model, "notify::dual-page",
5406                           G_CALLBACK (ev_view_dual_page_changed_cb),
5407                           view);
5408         g_signal_connect (view->model, "notify::fullscreen",
5409                           G_CALLBACK (ev_view_fullscreen_changed_cb),
5410                           view);
5411         g_signal_connect (view->model, "page-changed",
5412                           G_CALLBACK (ev_view_page_changed_cb),
5413                           view);
5414 }
5415
5416 static void
5417 ev_view_reload_page (EvView    *view,
5418                      gint       page,
5419                      GdkRegion *region)
5420 {
5421         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
5422                                      region,
5423                                      page,
5424                                      view->rotation,
5425                                      view->scale);
5426 }
5427
5428 void
5429 ev_view_reload (EvView *view)
5430 {
5431         ev_pixbuf_cache_clear (view->pixbuf_cache);
5432         view_update_range_and_current_page (view);
5433 }
5434
5435 /*** Zoom and sizing mode ***/
5436
5437 void
5438 ev_view_set_zoom (EvView   *view,
5439                   double    scale)
5440 {
5441         view->scale = scale;
5442
5443         g_object_notify (G_OBJECT (view), "zoom");
5444 }
5445
5446 double
5447 ev_view_get_zoom (EvView *view)
5448 {
5449         return view->scale;
5450 }
5451
5452 gboolean
5453 ev_view_get_continuous (EvView *view)
5454 {
5455         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5456
5457         return view->continuous;
5458 }
5459
5460 void
5461 ev_view_set_continuous (EvView   *view,
5462                         gboolean  continuous)
5463 {
5464         g_return_if_fail (EV_IS_VIEW (view));
5465
5466         view->continuous = continuous;
5467
5468         g_object_notify (G_OBJECT (view), "continuous");
5469 }
5470
5471 gboolean
5472 ev_view_get_dual_page (EvView *view)
5473 {
5474         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5475
5476         return view->dual_page;
5477 }
5478
5479 void
5480 ev_view_set_dual_page (EvView   *view,
5481                        gboolean  dual_page)
5482 {
5483         g_return_if_fail (EV_IS_VIEW (view));
5484
5485         view->dual_page = dual_page;
5486
5487         g_object_notify (G_OBJECT (view), "dual-page");
5488 }
5489
5490 void
5491 ev_view_set_fullscreen (EvView   *view,
5492                          gboolean  fullscreen)
5493 {
5494         g_return_if_fail (EV_IS_VIEW (view));
5495
5496         view->fullscreen = fullscreen;
5497
5498         g_object_notify (G_OBJECT (view), "fullscreen");
5499 }
5500
5501 gboolean
5502 ev_view_get_fullscreen (EvView *view)
5503 {
5504         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5505
5506         return view->fullscreen;
5507 }
5508
5509 void
5510 ev_view_set_presentation (EvView   *view,
5511                           gboolean  presentation)
5512 {
5513         g_return_if_fail (EV_IS_VIEW (view));
5514
5515         presentation = presentation != FALSE;
5516
5517         if (view->presentation == presentation)
5518                 return;
5519
5520         if (!presentation)
5521                 view->presentation_state = EV_PRESENTATION_NORMAL;
5522
5523         view->presentation = presentation;
5524         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5525
5526         if (presentation) {
5527                 view->sizing_mode_saved = view->sizing_mode;
5528                 view->scale_saved = view->scale;
5529                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
5530         } else {
5531                 ev_document_model_set_sizing_mode (view->model, view->sizing_mode_saved);
5532                 ev_document_model_set_scale (view->model, view->scale_saved);
5533         }
5534
5535         gtk_widget_queue_resize (GTK_WIDGET (view));
5536
5537         if (presentation)
5538                 ev_view_presentation_transition_start (view);
5539         else {
5540                 ev_view_presentation_transition_stop (view);
5541
5542                 if (view->animation) {
5543                         /* stop any running animation */
5544                         ev_view_transition_animation_cancel (view->animation, view);
5545                 }
5546         }
5547
5548         if (GTK_WIDGET_REALIZED (view)) {
5549                 if (view->presentation)
5550                         gdk_window_set_background (view->layout.bin_window,
5551                                                    &GTK_WIDGET (view)->style->black);
5552                 else
5553                         gdk_window_set_background (view->layout.bin_window,
5554                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5555         }
5556
5557         g_object_notify (G_OBJECT (view), "presentation");
5558 }
5559
5560 gboolean
5561 ev_view_get_presentation (EvView *view)
5562 {
5563         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5564
5565         return view->presentation;
5566 }
5567
5568 static gboolean
5569 transition_next_page (EvView *view)
5570 {
5571         ev_view_next_page (view);
5572
5573         return FALSE;
5574 }
5575
5576 static void
5577 ev_view_presentation_transition_stop (EvView *view)
5578 {
5579         if (view->trans_timeout_id > 0)
5580                 g_source_remove (view->trans_timeout_id);
5581         view->trans_timeout_id = 0;
5582 }
5583
5584 static void
5585 ev_view_presentation_transition_start (EvView *view)
5586 {
5587         gdouble duration;
5588
5589         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5590                 return;
5591
5592         ev_view_presentation_transition_stop (view);
5593
5594         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5595                                                              view->current_page);
5596         if (duration > 0) {
5597                 view->trans_timeout_id =
5598                         g_timeout_add_seconds (duration,
5599                                                (GSourceFunc) transition_next_page,
5600                                                view);
5601         }
5602 }
5603
5604 void
5605 ev_view_set_sizing_mode (EvView       *view,
5606                          EvSizingMode  sizing_mode)
5607 {
5608         view->sizing_mode = sizing_mode;
5609
5610         g_object_notify (G_OBJECT (view), "sizing-mode");
5611 }
5612
5613 EvSizingMode
5614 ev_view_get_sizing_mode (EvView *view)
5615 {
5616         g_return_val_if_fail (EV_IS_VIEW (view), EV_SIZING_FREE);
5617
5618         return view->sizing_mode;
5619 }
5620
5621 gboolean
5622 ev_view_can_zoom_in (EvView *view)
5623 {
5624         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
5625 }
5626
5627 gboolean
5628 ev_view_can_zoom_out (EvView *view)
5629 {
5630         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
5631 }
5632
5633 void
5634 ev_view_zoom_in (EvView *view)
5635 {
5636         gdouble scale;
5637
5638         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5639
5640         if (view->presentation)
5641                 return;
5642
5643         view->pending_scroll = SCROLL_TO_CENTER;
5644         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
5645         ev_document_model_set_scale (view->model, scale);
5646 }
5647
5648 void
5649 ev_view_zoom_out (EvView *view)
5650 {
5651         gdouble scale;
5652
5653         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5654
5655         if (view->presentation)
5656                 return;
5657
5658         view->pending_scroll = SCROLL_TO_CENTER;
5659         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5660         ev_document_model_set_scale (view->model, scale);
5661 }
5662
5663 void
5664 ev_view_set_rotation (EvView *view, int rotation)
5665 {
5666         view->rotation = rotation;
5667
5668         g_object_notify (G_OBJECT (view), "rotation");
5669 }
5670
5671 int
5672 ev_view_get_rotation (EvView *view)
5673 {
5674         return view->rotation;
5675 }
5676
5677 static double
5678 zoom_for_size_fit_width (gdouble doc_width,
5679                          gdouble doc_height,
5680                          int     target_width,
5681                          int     target_height)
5682 {
5683         return (double)target_width / doc_width;
5684 }
5685
5686 static double
5687 zoom_for_size_fit_height (gdouble doc_width,
5688                           gdouble doc_height,
5689                           int     target_width,
5690                           int     target_height)
5691 {
5692         return (double)target_height / doc_height;
5693 }
5694
5695 static double
5696 zoom_for_size_best_fit (gdouble doc_width,
5697                         gdouble doc_height,
5698                         int     target_width,
5699                         int     target_height)
5700 {
5701         double w_scale;
5702         double h_scale;
5703
5704         w_scale = (double)target_width / doc_width;
5705         h_scale = (double)target_height / doc_height;
5706
5707         return MIN (w_scale, h_scale);
5708 }
5709
5710
5711 static void
5712 ev_view_zoom_for_size_presentation (EvView *view,
5713                                     int     width,
5714                                     int     height)
5715 {
5716         gdouble doc_width, doc_height;
5717         gdouble scale;
5718
5719         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5720         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5721         ev_document_model_set_scale (view->model, scale);
5722 }
5723
5724 static void
5725 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5726                                                 int     width,
5727                                                 int     height)
5728 {
5729         gdouble doc_width, doc_height;
5730         GtkBorder border;
5731         gdouble scale;
5732
5733         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5734         if (view->rotation == 90 || view->rotation == 270) {
5735                 gdouble tmp;
5736
5737                 tmp = doc_width;
5738                 doc_width = doc_height;
5739                 doc_height = tmp;
5740         }
5741
5742         compute_border (view, doc_width, doc_height, &border);
5743
5744         doc_width *= 2;
5745         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5746         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5747
5748         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5749                 gint sb_size;
5750
5751                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5752                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5753         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5754                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5755         else
5756                 g_assert_not_reached ();
5757
5758         ev_document_model_set_scale (view->model, scale);
5759 }
5760
5761 static void
5762 ev_view_zoom_for_size_continuous (EvView *view,
5763                                   int     width,
5764                                   int     height)
5765 {
5766         gdouble doc_width, doc_height;
5767         GtkBorder border;
5768         gdouble scale;
5769
5770         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5771         if (view->rotation == 90 || view->rotation == 270) {
5772                 gdouble tmp;
5773
5774                 tmp = doc_width;
5775                 doc_width = doc_height;
5776                 doc_height = tmp;
5777         }
5778
5779         compute_border (view, doc_width, doc_height, &border);
5780
5781         width -= (border.left + border.right + 2 * view->spacing);
5782         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5783
5784         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5785                 gint sb_size;
5786
5787                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5788                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5789         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5790                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5791         else
5792                 g_assert_not_reached ();
5793
5794         ev_document_model_set_scale (view->model, scale);
5795 }
5796
5797 static void
5798 ev_view_zoom_for_size_dual_page (EvView *view,
5799                                  int     width,
5800                                  int     height)
5801 {
5802         GtkBorder border;
5803         gdouble doc_width, doc_height;
5804         gdouble scale;
5805         gint other_page;
5806
5807         other_page = view->current_page ^ 1;
5808
5809         /* Find the largest of the two. */
5810         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5811         if (other_page < ev_document_get_n_pages (view->document)) {
5812                 gdouble width_2, height_2;
5813
5814                 get_doc_page_size (view, other_page, &width_2, &height_2);
5815                 if (width_2 > doc_width)
5816                         doc_width = width_2;
5817                 if (height_2 > doc_height)
5818                         doc_height = height_2;
5819         }
5820         compute_border (view, width, height, &border);
5821
5822         doc_width = doc_width * 2;
5823         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5824         height -= (border.top + border.bottom + 2 * view->spacing);
5825
5826         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5827                 gint sb_size;
5828
5829                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5830                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5831         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5832                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5833         else
5834                 g_assert_not_reached ();
5835
5836         ev_document_model_set_scale (view->model, scale);
5837 }
5838
5839 static void
5840 ev_view_zoom_for_size_single_page (EvView *view,
5841                                    int     width,
5842                                    int     height)
5843 {
5844         gdouble doc_width, doc_height;
5845         GtkBorder border;
5846         gdouble scale;
5847
5848         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5849
5850         /* Get an approximate border */
5851         compute_border (view, width, height, &border);
5852
5853         width -= (border.left + border.right + 2 * view->spacing);
5854         height -= (border.top + border.bottom + 2 * view->spacing);
5855
5856         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5857                 gint sb_size;
5858
5859                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5860                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5861         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5862                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5863         else
5864                 g_assert_not_reached ();
5865
5866         ev_document_model_set_scale (view->model, scale);
5867 }
5868
5869 static void
5870 ev_view_zoom_for_size (EvView *view,
5871                        int     width,
5872                        int     height)
5873 {
5874         g_return_if_fail (EV_IS_VIEW (view));
5875         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5876                           view->sizing_mode == EV_SIZING_BEST_FIT);
5877         g_return_if_fail (width >= 0);
5878         g_return_if_fail (height >= 0);
5879
5880         if (view->document == NULL)
5881                 return;
5882
5883         if (view->presentation)
5884                 ev_view_zoom_for_size_presentation (view, width, height);
5885         else if (view->continuous && view->dual_page)
5886                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5887         else if (view->continuous)
5888                 ev_view_zoom_for_size_continuous (view, width, height);
5889         else if (view->dual_page)
5890                 ev_view_zoom_for_size_dual_page (view, width, height);
5891         else
5892                 ev_view_zoom_for_size_single_page (view, width, height);
5893 }
5894
5895 /*** Find ***/
5896 static gint
5897 ev_view_find_get_n_results (EvView *view, gint page)
5898 {
5899         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5900 }
5901
5902 static EvRectangle *
5903 ev_view_find_get_result (EvView *view, gint page, gint result)
5904 {
5905         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5906 }
5907
5908 static void
5909 jump_to_find_result (EvView *view)
5910 {
5911         gint n_results;
5912         gint page = view->current_page;
5913
5914         n_results = ev_view_find_get_n_results (view, page);
5915
5916         if (n_results > 0 && view->find_result < n_results) {
5917                 EvRectangle *rect;
5918                 GdkRectangle view_rect;
5919
5920                 rect = ev_view_find_get_result (view, page, view->find_result);
5921                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5922                 ensure_rectangle_is_visible (view, &view_rect);
5923                 view->jump_to_find_result = FALSE;
5924         }
5925 }
5926
5927 /**
5928  * jump_to_find_page
5929  * @view: #EvView instance
5930  * @direction: Direction to look
5931  * @shift: Shift from current page
5932  *
5933  * Jumps to the first page that has occurences of searched word.
5934  * Uses a direction where to look and a shift from current page.
5935  *
5936  */
5937 static void
5938 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5939 {
5940         int n_pages, i;
5941
5942         n_pages = ev_document_get_n_pages (view->document);
5943
5944         for (i = 0; i < n_pages; i++) {
5945                 int page;
5946
5947                 if (direction == EV_VIEW_FIND_NEXT)
5948                         page = view->current_page + i;
5949                 else
5950                         page = view->current_page - i;
5951                 page += shift;
5952
5953                 if (page >= n_pages) {
5954                         page = page - n_pages;
5955                 } else if (page < 0)
5956                         page = page + n_pages;
5957
5958                 if (ev_view_find_get_n_results (view, page) > 0) {
5959                         ev_document_model_set_page (view->model, page);
5960                         break;
5961                 }
5962         }
5963 }
5964
5965 void
5966 ev_view_find_changed (EvView *view, GList **results, gint page)
5967 {
5968         view->find_pages = results;
5969
5970         if (view->jump_to_find_result == TRUE) {
5971                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5972                 jump_to_find_result (view);
5973         }
5974
5975         if (view->current_page == page)
5976                 gtk_widget_queue_draw (GTK_WIDGET (view));
5977 }
5978
5979 void
5980 ev_view_find_next (EvView *view)
5981 {
5982         gint n_results;
5983
5984         n_results = ev_view_find_get_n_results (view, view->current_page);
5985         view->find_result++;
5986
5987         if (view->find_result >= n_results) {
5988                 view->find_result = 0;
5989                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5990                 jump_to_find_result (view);
5991         } else {
5992                 jump_to_find_result (view);
5993                 gtk_widget_queue_draw (GTK_WIDGET (view));
5994         }
5995 }
5996
5997 void
5998 ev_view_find_previous (EvView *view)
5999 {
6000         view->find_result--;
6001
6002         if (view->find_result < 0) {
6003                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
6004                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
6005                 jump_to_find_result (view);
6006         } else {
6007                 jump_to_find_result (view);
6008                 gtk_widget_queue_draw (GTK_WIDGET (view));
6009         }
6010 }
6011
6012 void
6013 ev_view_find_search_changed (EvView *view)
6014 {
6015         /* search string has changed, focus on new search result */
6016         view->jump_to_find_result = TRUE;
6017         view->find_pages = NULL;
6018 }
6019
6020 void
6021 ev_view_find_set_highlight_search (EvView *view, gboolean value)
6022 {
6023         view->highlight_find_results = value;
6024         gtk_widget_queue_draw (GTK_WIDGET (view));
6025 }
6026
6027 void
6028 ev_view_find_cancel (EvView *view)
6029 {
6030         view->find_pages = NULL;
6031 }
6032
6033 /*** Selections ***/
6034
6035 /* compute_new_selection_rect/text calculates the area currently selected by
6036  * view_rect.  each handles a different mode;
6037  */
6038 static GList *
6039 compute_new_selection_rect (EvView       *view,
6040                             GdkPoint     *start,
6041                             GdkPoint     *stop)
6042 {
6043         GdkRectangle view_rect;
6044         int n_pages, i;
6045         GList *list = NULL;
6046
6047         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
6048
6049         view_rect.x = MIN (start->x, stop->x);
6050         view_rect.y = MIN (start->y, stop->y);
6051         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
6052         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
6053
6054         n_pages = ev_document_get_n_pages (view->document);
6055
6056         for (i = 0; i < n_pages; i++) {
6057                 GdkRectangle page_area;
6058                 GtkBorder border;
6059
6060                 if (get_page_extents (view, i, &page_area, &border)) {
6061                         GdkRectangle overlap;
6062
6063                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
6064                                 EvViewSelection *selection;
6065
6066                                 selection = g_new0 (EvViewSelection, 1);
6067                                 selection->page = i;
6068                                 view_rect_to_doc_rect (view, &overlap, &page_area,
6069                                                        &(selection->rect));
6070
6071                                 list = g_list_append (list, selection);
6072                         }
6073                 }
6074         }
6075
6076         return list;
6077 }
6078
6079 static gboolean
6080 gdk_rectangle_point_in (GdkRectangle *rectangle,
6081                         GdkPoint     *point)
6082 {
6083         return rectangle->x <= point->x &&
6084                 rectangle->y <= point->y &&
6085                 point->x < rectangle->x + rectangle->width &&
6086                 point->y < rectangle->y + rectangle->height;
6087 }
6088
6089 static GList *
6090 compute_new_selection_text (EvView          *view,
6091                             EvSelectionStyle style,
6092                             GdkPoint        *start,
6093                             GdkPoint        *stop)
6094 {
6095         int n_pages, i, first, last;
6096         GList *list = NULL;
6097         EvViewSelection *selection;
6098         gdouble width, height;
6099         int start_page, end_page;
6100
6101         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
6102
6103         n_pages = ev_document_get_n_pages (view->document);
6104
6105         /* First figure out the range of pages the selection
6106          * affects. */
6107         first = n_pages;
6108         last = 0;
6109         if (view->continuous) {
6110                 start_page = 0;
6111                 end_page = n_pages;
6112         } else if (view->dual_page) {
6113                 start_page = view->start_page;
6114                 end_page = view->end_page + 1;
6115         } else {
6116                 start_page = view->current_page;
6117                 end_page = view->current_page + 1;
6118         }
6119
6120         for (i = start_page; i < end_page; i++) {
6121                 GdkRectangle page_area;
6122                 GtkBorder border;
6123
6124                 get_page_extents (view, i, &page_area, &border);
6125                 if (gdk_rectangle_point_in (&page_area, start) ||
6126                     gdk_rectangle_point_in (&page_area, stop)) {
6127                         if (first == n_pages)
6128                                 first = i;
6129                         last = i;
6130                 }
6131
6132         }
6133
6134         /* Now create a list of EvViewSelection's for the affected
6135          * pages.  This could be an empty list, a list of just one
6136          * page or a number of pages.*/
6137         for (i = first; i < last + 1; i++) {
6138                 GdkRectangle page_area;
6139                 GtkBorder border;
6140                 GdkPoint *point;
6141
6142                 get_doc_page_size (view, i, &width, &height);
6143
6144                 selection = g_new0 (EvViewSelection, 1);
6145                 selection->page = i;
6146                 selection->style = style;
6147                 selection->rect.x1 = selection->rect.y1 = 0;
6148                 selection->rect.x2 = width;
6149                 selection->rect.y2 = height;
6150
6151                 get_page_extents (view, i, &page_area, &border);
6152
6153                 if (gdk_rectangle_point_in (&page_area, start))
6154                         point = start;
6155                 else
6156                         point = stop;
6157
6158                 if (i == first)
6159                         view_point_to_doc_point (view, point, &page_area,
6160                                                  &selection->rect.x1,
6161                                                  &selection->rect.y1);
6162
6163                 /* If the selection is contained within just one page,
6164                  * make sure we don't write 'start' into both points
6165                  * in selection->rect. */
6166                 if (first == last)
6167                         point = stop;
6168
6169                 if (i == last)
6170                         view_point_to_doc_point (view, point, &page_area,
6171                                                  &selection->rect.x2,
6172                                                  &selection->rect.y2);
6173
6174                 list = g_list_append (list, selection);
6175         }
6176
6177         return list;
6178 }
6179
6180 /* This function takes the newly calculated list, and figures out which regions
6181  * have changed.  It then queues a redraw approporiately.
6182  */
6183 static void
6184 merge_selection_region (EvView *view,
6185                         GList  *new_list)
6186 {
6187         GList *old_list;
6188         GList *new_list_ptr, *old_list_ptr;
6189
6190         /* Update the selection */
6191         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
6192         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6193         g_list_free (view->selection_info.selections);
6194         view->selection_info.selections = new_list;
6195         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
6196         g_object_notify (G_OBJECT (view), "has-selection");
6197
6198         new_list_ptr = new_list;
6199         old_list_ptr = old_list;
6200
6201         while (new_list_ptr || old_list_ptr) {
6202                 EvViewSelection *old_sel, *new_sel;
6203                 int cur_page;
6204                 GdkRegion *region = NULL;
6205
6206                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
6207                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
6208
6209                 /* Assume that the lists are in order, and we run through them
6210                  * comparing them, one page at a time.  We come out with the
6211                  * first page we see. */
6212                 if (new_sel && old_sel) {
6213                         if (new_sel->page < old_sel->page) {
6214                                 new_list_ptr = new_list_ptr->next;
6215                                 old_sel = NULL;
6216                         } else if (new_sel->page > old_sel->page) {
6217                                 old_list_ptr = old_list_ptr->next;
6218                                 new_sel = NULL;
6219                         } else {
6220                                 new_list_ptr = new_list_ptr->next;
6221                                 old_list_ptr = old_list_ptr->next;
6222                         }
6223                 } else if (new_sel) {
6224                         new_list_ptr = new_list_ptr->next;
6225                 } else if (old_sel) {
6226                         old_list_ptr = old_list_ptr->next;
6227                 }
6228
6229                 g_assert (new_sel || old_sel);
6230
6231                 /* is the page we're looking at on the screen?*/
6232                 cur_page = new_sel ? new_sel->page : old_sel->page;
6233                 if (cur_page < view->start_page || cur_page > view->end_page)
6234                         continue;
6235
6236                 /* seed the cache with a new page.  We are going to need the new
6237                  * region too. */
6238                 if (new_sel) {
6239                         GdkRegion *tmp_region = NULL;
6240
6241                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
6242                                                                cur_page,
6243                                                                view->scale,
6244                                                                &tmp_region);
6245
6246                         if (tmp_region) {
6247                                 new_sel->covered_region = gdk_region_copy (tmp_region);
6248                         }
6249                 }
6250
6251                 /* Now we figure out what needs redrawing */
6252                 if (old_sel && new_sel) {
6253                         if (old_sel->covered_region && new_sel->covered_region) {
6254                                 /* We only want to redraw the areas that have
6255                                  * changed, so we xor the old and new regions
6256                                  * and redraw if it's different */
6257                                 region = gdk_region_copy (old_sel->covered_region);
6258                                 gdk_region_xor (region, new_sel->covered_region);
6259                                 if (gdk_region_empty (region)) {
6260                                         gdk_region_destroy (region);
6261                                         region = NULL;
6262                                 }
6263                         } else if (old_sel->covered_region) {
6264                                 region = gdk_region_copy (old_sel->covered_region);
6265                         } else if (new_sel->covered_region) {
6266                                 region = gdk_region_copy (new_sel->covered_region);
6267                         }
6268                 } else if (old_sel && !new_sel) {
6269                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
6270                                 region = gdk_region_copy (old_sel->covered_region);
6271                         }
6272                 } else if (!old_sel && new_sel) {
6273                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
6274                                 region = gdk_region_copy (new_sel->covered_region);
6275                         }
6276                 } else {
6277                         g_assert_not_reached ();
6278                 }
6279
6280                 /* Redraw the damaged region! */
6281                 if (region) {
6282                         GdkRectangle page_area;
6283                         GtkBorder border;
6284
6285                         /* I don't know why but the region is smaller
6286                          * than expected. This hack fixes it, I guess
6287                          * 10 pixels more won't hurt
6288                          */
6289                         gdk_region_shrink (region, -5, -5);
6290
6291                         get_page_extents (view, cur_page, &page_area, &border);
6292                         gdk_region_offset (region,
6293                                            page_area.x + border.left - view->scroll_x,
6294                                            page_area.y + border.top - view->scroll_y);
6295                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
6296                         gdk_region_destroy (region);
6297                 }
6298         }
6299
6300         /* Free the old list, now that we're done with it. */
6301         g_list_foreach (old_list, (GFunc) selection_free, NULL);
6302         g_list_free (old_list);
6303 }
6304
6305 static void
6306 compute_selections (EvView          *view,
6307                     EvSelectionStyle style,
6308                     GdkPoint        *start,
6309                     GdkPoint        *stop)
6310 {
6311         GList *list;
6312
6313         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
6314                 list = compute_new_selection_rect (view, start, stop);
6315         else
6316                 list = compute_new_selection_text (view, style, start, stop);
6317         merge_selection_region (view, list);
6318 }
6319
6320 /* Free's the selection.  It's up to the caller to queue redraws if needed.
6321  */
6322 static void
6323 selection_free (EvViewSelection *selection)
6324 {
6325         if (selection->covered_region)
6326                 gdk_region_destroy (selection->covered_region);
6327         g_free (selection);
6328 }
6329
6330 static void
6331 clear_selection (EvView *view)
6332 {
6333         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6334         g_list_free (view->selection_info.selections);
6335         view->selection_info.selections = NULL;
6336         view->selection_info.in_selection = FALSE;
6337         if (view->pixbuf_cache)
6338                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
6339         g_object_notify (G_OBJECT (view), "has-selection");
6340 }
6341
6342 void
6343 ev_view_select_all (EvView *view)
6344 {
6345         GList *selections = NULL;
6346         int n_pages, i;
6347
6348         /* Disable selection on rotated pages for the 0.4.0 series */
6349         if (view->rotation != 0)
6350                 return;
6351
6352         clear_selection (view);
6353
6354         n_pages = ev_document_get_n_pages (view->document);
6355         for (i = 0; i < n_pages; i++) {
6356                 gdouble width, height;
6357                 EvViewSelection *selection;
6358
6359                 get_doc_page_size (view, i, &width, &height);
6360
6361                 selection = g_new0 (EvViewSelection, 1);
6362                 selection->page = i;
6363                 selection->style = EV_SELECTION_STYLE_GLYPH;
6364                 selection->rect.x1 = selection->rect.y1 = 0;
6365                 selection->rect.x2 = width;
6366                 selection->rect.y2 = height;
6367
6368                 selections = g_list_append (selections, selection);
6369         }
6370
6371         merge_selection_region (view, selections);
6372         gtk_widget_queue_draw (GTK_WIDGET (view));
6373 }
6374
6375 gboolean
6376 ev_view_get_has_selection (EvView *view)
6377 {
6378         return view->selection_info.selections != NULL;
6379 }
6380
6381 static char *
6382 get_selected_text (EvView *view)
6383 {
6384         GString *text;
6385         GList *l;
6386         gchar *normalized_text;
6387         EvRenderContext *rc;
6388
6389         text = g_string_new (NULL);
6390         rc = ev_render_context_new (NULL, view->rotation, view->scale);
6391
6392         ev_document_doc_mutex_lock ();
6393
6394         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6395                 EvViewSelection *selection = (EvViewSelection *)l->data;
6396                 EvPage *page;
6397                 gchar *tmp;
6398
6399                 page = ev_document_get_page (view->document, selection->page);
6400                 ev_render_context_set_page (rc, page);
6401                 g_object_unref (page);
6402
6403                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6404                                                       rc, selection->style,
6405                                                       &(selection->rect));
6406
6407                 g_string_append (text, tmp);
6408                 g_free (tmp);
6409         }
6410
6411         g_object_unref (rc);
6412
6413         ev_document_doc_mutex_unlock ();
6414
6415         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6416         g_string_free (text, TRUE);
6417         return normalized_text;
6418 }
6419
6420 static void
6421 ev_view_clipboard_copy (EvView      *view,
6422                         const gchar *text)
6423 {
6424         GtkClipboard *clipboard;
6425
6426         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6427                                               GDK_SELECTION_CLIPBOARD);
6428         gtk_clipboard_set_text (clipboard, text, -1);
6429 }
6430
6431 void
6432 ev_view_copy (EvView *ev_view)
6433 {
6434         char *text;
6435
6436         if (!EV_IS_SELECTION (ev_view->document))
6437                 return;
6438
6439         text = get_selected_text (ev_view);
6440         ev_view_clipboard_copy (ev_view, text);
6441         g_free (text);
6442 }
6443
6444 static void
6445 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6446                         GtkSelectionData *selection_data,
6447                         guint             info,
6448                         gpointer          data)
6449 {
6450         EvView *ev_view = EV_VIEW (data);
6451
6452         if (ev_view->link_selected) {
6453                 gtk_selection_data_set_text (selection_data,
6454                                              ev_link_action_get_uri (ev_view->link_selected),
6455                                              -1);
6456         } else if (EV_IS_SELECTION (ev_view->document) &&
6457                    ev_view->selection_info.selections) {
6458                 gchar *text;
6459
6460                 text = get_selected_text (ev_view);
6461                 if (text) {
6462                         gtk_selection_data_set_text (selection_data, text, -1);
6463                         g_free (text);
6464                 }
6465         }
6466 }
6467
6468 static void
6469 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6470                           gpointer      data)
6471 {
6472         EvView *view = EV_VIEW (data);
6473
6474         clear_selection (view);
6475         clear_link_selected (view);
6476 }
6477
6478 static void
6479 ev_view_update_primary_selection (EvView *ev_view)
6480 {
6481         GtkClipboard *clipboard;
6482
6483         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6484                                               GDK_SELECTION_PRIMARY);
6485
6486         if (ev_view->selection_info.selections || ev_view->link_selected) {
6487                 GtkTargetList *target_list;
6488                 GtkTargetEntry *targets;
6489                 int n_targets;
6490
6491                 target_list = gtk_target_list_new (NULL, 0);
6492                 gtk_target_list_add_text_targets (target_list, 0);
6493                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6494                 gtk_target_list_unref (target_list);
6495
6496                 if (!gtk_clipboard_set_with_owner (clipboard,
6497                                                    targets, n_targets,
6498                                                    ev_view_primary_get_cb,
6499                                                    ev_view_primary_clear_cb,
6500                                                    G_OBJECT (ev_view)))
6501                         ev_view_primary_clear_cb (clipboard, ev_view);
6502
6503                 gtk_target_table_free (targets, n_targets);
6504         } else {
6505                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6506                         gtk_clipboard_clear (clipboard);
6507         }
6508 }
6509
6510 static void
6511 clear_link_selected (EvView *view)
6512 {
6513         if (view->link_selected) {
6514                 g_object_unref (view->link_selected);
6515                 view->link_selected = NULL;
6516         }
6517 }
6518
6519 void
6520 ev_view_copy_link_address (EvView       *view,
6521                            EvLinkAction *action)
6522 {
6523         clear_link_selected (view);
6524
6525         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6526
6527         view->link_selected = g_object_ref (action);
6528         ev_view_update_primary_selection (view);
6529 }
6530
6531 /*** Cursor operations ***/
6532
6533 static GdkCursor *
6534 ev_view_create_invisible_cursor(void)
6535 {
6536        GdkBitmap *empty;
6537        GdkColor black = { 0, 0, 0, 0 };
6538        static char bits[] = { 0x00 };
6539
6540        empty = gdk_bitmap_create_from_data (NULL, bits, 1, 1);
6541
6542        return gdk_cursor_new_from_pixmap (empty, empty, &black, &black, 0, 0);
6543 }
6544
6545 static void
6546 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6547 {
6548         GdkCursor *cursor = NULL;
6549         GdkDisplay *display;
6550         GtkWidget *widget;
6551
6552         if (view->cursor == new_cursor) {
6553                 return;
6554         }
6555
6556         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6557         display = gtk_widget_get_display (widget);
6558         view->cursor = new_cursor;
6559
6560         switch (new_cursor) {
6561                 case EV_VIEW_CURSOR_NORMAL:
6562                         gdk_window_set_cursor (view->layout.bin_window, NULL);
6563                         break;
6564                 case EV_VIEW_CURSOR_IBEAM:
6565                         cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
6566                         break;
6567                 case EV_VIEW_CURSOR_LINK:
6568                         cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
6569                         break;
6570                 case EV_VIEW_CURSOR_WAIT:
6571                         cursor = gdk_cursor_new_for_display (display, GDK_WATCH);
6572                         break;
6573                 case EV_VIEW_CURSOR_HIDDEN:
6574                         cursor = ev_view_create_invisible_cursor ();
6575                         break;
6576                 case EV_VIEW_CURSOR_DRAG:
6577                         cursor = gdk_cursor_new_for_display (display, GDK_FLEUR);
6578                         break;
6579                 case EV_VIEW_CURSOR_AUTOSCROLL:
6580                         cursor = gdk_cursor_new_for_display (display, GDK_DOUBLE_ARROW);
6581                         break;
6582         }
6583
6584         if (cursor) {
6585                 gdk_window_set_cursor (view->layout.bin_window, cursor);
6586                 gdk_cursor_unref (cursor);
6587                 gdk_flush();
6588         }
6589 }
6590
6591 void
6592 ev_view_hide_cursor (EvView *view)
6593 {
6594        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6595 }
6596
6597 void
6598 ev_view_show_cursor (EvView *view)
6599 {
6600        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6601 }
6602
6603 static void
6604 ev_view_reset_presentation_state (EvView *view)
6605 {
6606         if (!view->presentation ||
6607             view->presentation_state == EV_PRESENTATION_NORMAL)
6608                 return;
6609
6610         view->presentation_state = EV_PRESENTATION_NORMAL;
6611         gdk_window_set_background (view->layout.bin_window,
6612                                    &GTK_WIDGET (view)->style->black);
6613         gtk_widget_queue_draw (GTK_WIDGET (view));
6614 }
6615
6616 gboolean
6617 ev_view_next_page (EvView *view)
6618 {
6619         int page, n_pages;
6620
6621         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6622
6623         if (!view->document)
6624                 return FALSE;
6625
6626         if (view->presentation &&
6627             (view->presentation_state == EV_PRESENTATION_BLACK ||
6628              view->presentation_state == EV_PRESENTATION_WHITE)) {
6629                 ev_view_reset_presentation_state (view);
6630                 return FALSE;
6631         }
6632
6633         if (view->animation) {
6634                 ev_view_transition_animation_cancel (view->animation, view);
6635         }
6636
6637         ev_view_presentation_transition_stop (view);
6638         ev_view_reset_presentation_state (view);
6639
6640         page = ev_document_model_get_page (view->model);
6641         n_pages = ev_document_get_n_pages (view->document);
6642
6643         if (view->dual_page && !view->presentation)
6644                 page = page + 2;
6645         else
6646                 page = page + 1;
6647
6648         if (page < n_pages) {
6649                 ev_document_model_set_page (view->model, page);
6650                 return TRUE;
6651         } else if (view->presentation && page == n_pages) {
6652                 view->presentation_state = EV_PRESENTATION_END;
6653                 gtk_widget_queue_draw (GTK_WIDGET (view));
6654                 return TRUE;
6655         } else if (view->dual_page && page == n_pages) {
6656                 ev_document_model_set_page (view->model, page - 1);
6657                 return TRUE;
6658         } else {
6659                 return FALSE;
6660         }
6661 }
6662
6663 gboolean
6664 ev_view_previous_page (EvView *view)
6665 {
6666         int page;
6667
6668         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6669
6670         if (!view->document)
6671                 return FALSE;
6672
6673         if (view->presentation &&
6674             view->presentation_state == EV_PRESENTATION_END) {
6675                 ev_view_reset_presentation_state (view);
6676                 return TRUE;
6677         }
6678
6679         if (view->presentation &&
6680             (view->presentation_state == EV_PRESENTATION_BLACK ||
6681              view->presentation_state == EV_PRESENTATION_WHITE)) {
6682                 ev_view_reset_presentation_state (view);
6683                 return FALSE;
6684         }
6685
6686         if (view->animation) {
6687                 ev_view_transition_animation_cancel (view->animation, view);
6688         }
6689
6690         ev_view_reset_presentation_state (view);
6691
6692         page = ev_document_model_get_page (view->model);
6693
6694         if (view->dual_page && !view->presentation)
6695                 page = page - 2;
6696         else
6697                 page = page - 1;
6698
6699         if (page >= 0) {
6700                 ev_document_model_set_page (view->model, page);
6701                 return TRUE;
6702         } else if (ev_view_get_dual_page (view) && page == -1) {
6703                 ev_document_model_set_page (view->model, 0);
6704                 return TRUE;
6705         } else {
6706                 return FALSE;
6707         }
6708 }
6709