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