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 gchar *
1757 ev_view_page_label_from_dest (EvView *view, EvLinkDest *dest)
1758 {
1759         EvLinkDestType type;
1760         gchar *msg = NULL;
1761
1762         type = ev_link_dest_get_dest_type (dest);
1763
1764         switch (type) {
1765                 case EV_LINK_DEST_TYPE_NAMED: {
1766                         EvLinkDest  *dest2;
1767                         const gchar *named_dest;
1768
1769                         named_dest = ev_link_dest_get_named_dest (dest);
1770                         dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1771                                                                   named_dest);
1772                         if (dest2) {
1773                                 msg = ev_document_get_page_label (view->document,
1774                                                                   ev_link_dest_get_page (dest2));
1775                                 g_object_unref (dest2);
1776                         }
1777                 }
1778
1779                         break;
1780                 case EV_LINK_DEST_TYPE_PAGE_LABEL: {
1781                         msg = g_strdup (ev_link_dest_get_page_label (dest));
1782                 }
1783                         break;
1784                 default:
1785                         msg = ev_document_get_page_label (view->document,
1786                                                           ev_link_dest_get_page (dest));
1787         }
1788
1789         return msg;
1790 }
1791
1792 static char *
1793 tip_from_action_named (EvLinkAction *action)
1794 {
1795         const gchar *name = ev_link_action_get_name (action);
1796
1797         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1798                 return g_strdup (_("Go to first page"));
1799         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1800                 return g_strdup (_("Go to previous page"));
1801         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1802                 return g_strdup (_("Go to next page"));
1803         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1804                 return g_strdup (_("Go to last page"));
1805         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1806                 return g_strdup (_("Go to page"));
1807         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1808                 return g_strdup (_("Find"));
1809         }
1810
1811         return NULL;
1812 }
1813
1814 static char *
1815 tip_from_link (EvView *view, EvLink *link)
1816 {
1817         EvLinkAction *action;
1818         EvLinkActionType type;
1819         char *msg = NULL;
1820         char *page_label;
1821         const char *title;
1822
1823         action = ev_link_get_action (link);
1824         title = ev_link_get_title (link);
1825
1826         if (!action)
1827                 return title ? g_strdup (title) : NULL;
1828
1829         type = ev_link_action_get_action_type (action);
1830
1831         switch (type) {
1832                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1833                         page_label = ev_view_page_label_from_dest (view,
1834                                                                    ev_link_action_get_dest (action));
1835                         if (page_label) {
1836                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1837                                 g_free (page_label);
1838                         }
1839                         break;
1840                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1841                         if (title) {
1842                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1843                                                        ev_link_action_get_filename (action));
1844                         } else {
1845                                 msg = g_strdup_printf (_("Go to file “%s”"),
1846                                                        ev_link_action_get_filename (action));
1847                         }
1848                         break;
1849                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1850                         msg = g_strdup (ev_link_action_get_uri (action));
1851                         break;
1852                 case EV_LINK_ACTION_TYPE_LAUNCH:
1853                         msg = g_strdup_printf (_("Launch %s"),
1854                                                ev_link_action_get_filename (action));
1855                         break;
1856                 case EV_LINK_ACTION_TYPE_NAMED:
1857                         msg = tip_from_action_named (action);
1858                         break;
1859                 default:
1860                         if (title)
1861                                 msg = g_strdup (title);
1862                         break;
1863         }
1864
1865         return msg;
1866 }
1867
1868 static void
1869 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1870 {
1871         EvLink       *link;
1872         EvFormField  *field;
1873         EvAnnotation *annot = NULL;
1874
1875         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1876                 return;
1877
1878         if (view->drag_info.in_drag) {
1879                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1880                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1881                 return;
1882         }
1883
1884         if (view->scroll_info.autoscrolling) {
1885                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1886                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1887                 return;
1888         }
1889
1890         link = ev_view_get_link_at_location (view, x, y);
1891         if (link) {
1892                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1893         } else if ((field = ev_view_get_form_field_at_location (view, x, y)) && !view->presentation) {
1894                 if (field->is_read_only) {
1895                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1896                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1897                             view->cursor == EV_VIEW_CURSOR_DRAG)
1898                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1899                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1900                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1901                 } else {
1902                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1903                 }
1904         } else if ((annot = ev_view_get_annotation_at_location (view, x, y)) && !view->presentation) {
1905                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1906         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y) && !view->presentation) {
1907                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1908         } else {
1909                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1910                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1911                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1912                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1913                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1914         }
1915
1916         if (link || annot)
1917                 g_object_set (view, "has-tooltip", TRUE, NULL);
1918 }
1919
1920 /*** Images ***/
1921 static EvImage *
1922 ev_view_get_image_at_location (EvView  *view,
1923                                gdouble  x,
1924                                gdouble  y)
1925 {
1926         gint page = -1;
1927         gint x_new = 0, y_new = 0;
1928         GList *image_mapping;
1929
1930         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1931                 return NULL;
1932
1933         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1934                 return NULL;
1935
1936         image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page);
1937
1938         if (image_mapping)
1939                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1940         else
1941                 return NULL;
1942 }
1943
1944 /*** Forms ***/
1945 static EvFormField *
1946 ev_view_get_form_field_at_location (EvView  *view,
1947                                     gdouble  x,
1948                                     gdouble  y)
1949 {
1950         gint page = -1;
1951         gint x_new = 0, y_new = 0;
1952         GList *forms_mapping;
1953
1954         if (!EV_IS_DOCUMENT_FORMS (view->document))
1955                 return NULL;
1956
1957         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1958                 return NULL;
1959
1960         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, page);
1961
1962         if (forms_mapping)
1963                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1964         else
1965                 return NULL;
1966 }
1967
1968 static GdkRegion *
1969 ev_view_form_field_get_region (EvView      *view,
1970                                EvFormField *field)
1971 {
1972         GdkRectangle view_area;
1973         GList       *forms_mapping;
1974
1975         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
1976                                                               field->page->index);
1977         ev_view_get_area_from_mapping (view, field->page->index,
1978                                        forms_mapping,
1979                                        field, &view_area);
1980
1981         return gdk_region_rectangle (&view_area);
1982 }
1983
1984 static gboolean
1985 ev_view_forms_remove_widgets (EvView *view)
1986 {
1987         ev_view_remove_all (view);
1988
1989         return FALSE;
1990 }
1991
1992 static void
1993 ev_view_form_field_destroy (GtkWidget *widget,
1994                             EvView    *view)
1995 {
1996         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1997 }
1998
1999 static GtkWidget *
2000 ev_view_form_field_button_create_widget (EvView      *view,
2001                                          EvFormField *field)
2002 {
2003         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
2004         GdkRegion         *field_region = NULL;
2005
2006         switch (field_button->type) {
2007                 case EV_FORM_FIELD_BUTTON_PUSH:
2008                         return NULL;
2009                 case EV_FORM_FIELD_BUTTON_CHECK:
2010                 case EV_FORM_FIELD_BUTTON_RADIO: {
2011                         gboolean  state;
2012                         GList    *forms_mapping, *l;
2013
2014                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
2015                                                                                field);
2016
2017                         /* FIXME: it actually depends on NoToggleToOff flags */
2018                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
2019                             state && field_button->state)
2020                                 return NULL;
2021
2022                         field_region = ev_view_form_field_get_region (view, field);
2023
2024                         /* For radio buttons and checkbox buttons that are in a set
2025                          * we need to update also the region for the current selected item
2026                          */
2027                         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2028                                                                               field->page->index);
2029                         for (l = forms_mapping; l; l = g_list_next (l)) {
2030                                 EvFormField *button = ((EvMapping *)(l->data))->data;
2031                                 GdkRegion   *button_region;
2032
2033                                 if (button->id == field->id)
2034                                         continue;
2035
2036                                 /* FIXME: only buttons in the same group should be updated */
2037                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
2038                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
2039                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
2040                                         continue;
2041
2042                                 button_region = ev_view_form_field_get_region (view, button);
2043                                 gdk_region_union (field_region, button_region);
2044                                 gdk_region_destroy (button_region);
2045                         }
2046
2047                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
2048                                                                        field, !state);
2049                         field_button->state = !state;
2050                 }
2051                         break;
2052         }
2053
2054         ev_view_reload_page (view, field->page->index, field_region);
2055         gdk_region_destroy (field_region);
2056
2057         return NULL;
2058 }
2059
2060 static void
2061 ev_view_form_field_text_save (EvView    *view,
2062                               GtkWidget *widget)
2063 {
2064         EvFormField *field;
2065
2066         if (!view->document)
2067                 return;
2068
2069         field = g_object_get_data (G_OBJECT (widget), "form-field");
2070
2071         if (field->changed) {
2072                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2073                 GdkRegion       *field_region;
2074
2075                 field_region = ev_view_form_field_get_region (view, field);
2076
2077                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
2078                                                             field, field_text->text);
2079                 field->changed = FALSE;
2080                 ev_view_reload_page (view, field->page->index, field_region);
2081                 gdk_region_destroy (field_region);
2082         }
2083 }
2084
2085 static void
2086 ev_view_form_field_text_changed (GtkWidget   *widget,
2087                                  EvFormField *field)
2088 {
2089         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2090         gchar           *text = NULL;
2091
2092         if (GTK_IS_ENTRY (widget)) {
2093                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
2094         } else if (GTK_IS_TEXT_BUFFER (widget)) {
2095                 GtkTextIter start, end;
2096
2097                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
2098                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
2099                                                  &start, &end, FALSE);
2100         }
2101
2102         if (!field_text->text ||
2103             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2104                 g_free (field_text->text);
2105                 field_text->text = text;
2106                 field->changed = TRUE;
2107         }
2108 }
2109
2110 static GtkWidget *
2111 ev_view_form_field_text_create_widget (EvView      *view,
2112                                        EvFormField *field)
2113 {
2114         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2115         GtkWidget       *text = NULL;
2116         gchar           *txt;
2117
2118         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2119                                                           field);
2120
2121         switch (field_text->type) {
2122                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2123                         /* TODO */
2124                 case EV_FORM_FIELD_TEXT_NORMAL:
2125                         text = gtk_entry_new ();
2126                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2127                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2128                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2129
2130                         if (txt) {
2131                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2132                                 g_free (txt);
2133                         }
2134
2135                         g_signal_connect (text, "changed",
2136                                           G_CALLBACK (ev_view_form_field_text_changed),
2137                                           field);
2138                         g_signal_connect_after (text, "activate",
2139                                                 G_CALLBACK (ev_view_form_field_destroy),
2140                                                 view);
2141                         break;
2142                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2143                         GtkTextBuffer *buffer;
2144
2145                         text = gtk_text_view_new ();
2146                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2147
2148                         if (txt) {
2149                                 gtk_text_buffer_set_text (buffer, txt, -1);
2150                                 g_free (txt);
2151                         }
2152
2153                         g_signal_connect (buffer, "changed",
2154                                           G_CALLBACK (ev_view_form_field_text_changed),
2155                                           field);
2156                 }
2157                         break;
2158         }
2159
2160         g_object_weak_ref (G_OBJECT (text),
2161                            (GWeakNotify)ev_view_form_field_text_save,
2162                            view);
2163
2164         return text;
2165 }
2166
2167 static void
2168 ev_view_form_field_choice_save (EvView    *view,
2169                                 GtkWidget *widget)
2170 {
2171         EvFormField *field;
2172
2173         if (!view->document)
2174                 return;
2175
2176         field = g_object_get_data (G_OBJECT (widget), "form-field");
2177
2178         if (field->changed) {
2179                 GList             *l;
2180                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2181                 GdkRegion         *field_region;
2182
2183                 field_region = ev_view_form_field_get_region (view, field);
2184
2185                 if (field_choice->is_editable) {
2186                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2187                                                                       field, field_choice->text);
2188                 } else {
2189                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2190                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2191                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2192                                                                                  field,
2193                                                                                  GPOINTER_TO_INT (l->data));
2194                         }
2195                 }
2196                 field->changed = FALSE;
2197                 ev_view_reload_page (view, field->page->index, field_region);
2198                 gdk_region_destroy (field_region);
2199         }
2200 }
2201
2202 static void
2203 ev_view_form_field_choice_changed (GtkWidget   *widget,
2204                                    EvFormField *field)
2205 {
2206         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2207
2208         if (GTK_IS_COMBO_BOX (widget)) {
2209                 gint item;
2210
2211                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2212                 if (!field_choice->selected_items ||
2213                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2214                         g_list_free (field_choice->selected_items);
2215                         field_choice->selected_items = NULL;
2216                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2217                                                                        GINT_TO_POINTER (item));
2218                         field->changed = TRUE;
2219                 }
2220
2221                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2222                         gchar *text;
2223
2224                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2225                         if (!field_choice->text ||
2226                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2227                                 g_free (field_choice->text);
2228                                 field_choice->text = text;
2229                                 field->changed = TRUE;
2230                         }
2231                 }
2232         } else if (GTK_IS_TREE_SELECTION (widget)) {
2233                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2234                 GtkTreeModel     *model;
2235                 GList            *items, *l;
2236
2237                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2238                 g_list_free (field_choice->selected_items);
2239                 field_choice->selected_items = NULL;
2240
2241                 for (l = items; l && l->data; l = g_list_next (l)) {
2242                         GtkTreeIter  iter;
2243                         GtkTreePath *path = (GtkTreePath *)l->data;
2244                         gint         item;
2245
2246                         gtk_tree_model_get_iter (model, &iter, path);
2247                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2248
2249                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2250                                                                        GINT_TO_POINTER (item));
2251
2252                         gtk_tree_path_free (path);
2253                 }
2254
2255                 g_list_free (items);
2256
2257                 field->changed = TRUE;
2258         }
2259 }
2260
2261 static GtkWidget *
2262 ev_view_form_field_choice_create_widget (EvView      *view,
2263                                          EvFormField *field)
2264 {
2265         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2266         GtkWidget         *choice;
2267         GtkTreeModel      *model;
2268         gint               n_items, i;
2269         gint               selected_item = 0;
2270
2271         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2272                                                                    field);
2273         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2274         for (i = 0; i < n_items; i++) {
2275                 GtkTreeIter iter;
2276                 gchar      *item;
2277
2278                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2279                                                                      field, i);
2280                 if (ev_document_forms_form_field_choice_is_item_selected (
2281                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2282                         selected_item = i;
2283                         /* FIXME: we need a get_selected_items function in poppler */
2284                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2285                                                                        GINT_TO_POINTER (i));
2286                 }
2287
2288                 if (item) {
2289                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2290                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2291                                             0, item,
2292                                             1, i,
2293                                             -1);
2294                         g_free (item);
2295                 }
2296         }
2297
2298         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2299                 GtkCellRenderer  *renderer;
2300                 GtkWidget        *tree_view;
2301                 GtkTreeSelection *selection;
2302
2303                 tree_view = gtk_tree_view_new_with_model (model);
2304                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2305
2306                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2307                 if (field_choice->multi_select) {
2308                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2309                 }
2310
2311                 /* TODO: set selected items */
2312
2313                 renderer = gtk_cell_renderer_text_new ();
2314                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2315                                                              0,
2316                                                              "choix", renderer,
2317                                                              "text", 0,
2318                                                              NULL);
2319
2320                 choice = gtk_scrolled_window_new (NULL, NULL);
2321                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2322                                                 GTK_POLICY_AUTOMATIC,
2323                                                 GTK_POLICY_AUTOMATIC);
2324                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2325                 gtk_widget_show (tree_view);
2326
2327                 g_signal_connect (selection, "changed",
2328                                   G_CALLBACK (ev_view_form_field_choice_changed),
2329                                   field);
2330                 g_signal_connect_after (selection, "changed",
2331                                         G_CALLBACK (ev_view_form_field_destroy),
2332                                         view);
2333         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2334                 gchar *text;
2335
2336                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2337                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2338                 if (text) {
2339                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2340                         g_free (text);
2341                 }
2342
2343                 g_signal_connect (choice, "changed",
2344                                   G_CALLBACK (ev_view_form_field_choice_changed),
2345                                   field);
2346                 g_signal_connect_after (GTK_BIN(choice)->child, "activate",
2347                                         G_CALLBACK (ev_view_form_field_destroy),
2348                                         view);
2349         } else { /* ComboBoxText */
2350                 GtkCellRenderer *renderer;
2351
2352                 choice = gtk_combo_box_new_with_model (model);
2353                 renderer = gtk_cell_renderer_text_new ();
2354                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2355                                             renderer, TRUE);
2356                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2357                                                 renderer,
2358                                                 "text", 0,
2359                                                 NULL);
2360                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2361                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2362
2363                 g_signal_connect (choice, "changed",
2364                                   G_CALLBACK (ev_view_form_field_choice_changed),
2365                                   field);
2366                 g_signal_connect_after (choice, "changed",
2367                                         G_CALLBACK (ev_view_form_field_destroy),
2368                                         view);
2369         }
2370
2371         g_object_unref (model);
2372
2373         g_object_weak_ref (G_OBJECT (choice),
2374                            (GWeakNotify)ev_view_form_field_choice_save,
2375                            view);
2376
2377         return choice;
2378 }
2379
2380 static void
2381 ev_view_handle_form_field (EvView      *view,
2382                            EvFormField *field,
2383                            gdouble      x,
2384                            gdouble      y)
2385 {
2386         GtkWidget   *field_widget = NULL;
2387         GList       *form_field_mapping;
2388         GdkRectangle view_area;
2389
2390         if (field->is_read_only)
2391                 return;
2392
2393         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2394                 field_widget = ev_view_form_field_button_create_widget (view, field);
2395         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2396                 field_widget = ev_view_form_field_text_create_widget (view, field);
2397         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2398                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2399         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2400                 /* TODO */
2401         }
2402
2403         /* Form field doesn't require a widget */
2404         if (!field_widget)
2405                 return;
2406
2407         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2408                                 g_object_ref (field),
2409                                 (GDestroyNotify)g_object_unref);
2410
2411         form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2412                                                                    field->page->index);
2413         ev_view_get_area_from_mapping (view, field->page->index,
2414                                        form_field_mapping,
2415                                        field, &view_area);
2416
2417         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2418         gtk_widget_show (field_widget);
2419         gtk_widget_grab_focus (field_widget);
2420 }
2421
2422 /* Annotations */
2423 static EvViewWindowChild *
2424 ev_view_get_window_child (EvView    *view,
2425                           GtkWidget *window)
2426 {
2427         GList *children = view->window_children;
2428
2429         while (children) {
2430                 EvViewWindowChild *child;
2431
2432                 child = (EvViewWindowChild *)children->data;
2433                 children = children->next;
2434
2435                 if (child->window == window)
2436                         return child;
2437         }
2438
2439         return NULL;
2440 }
2441
2442 static void
2443 ev_view_window_child_move (EvView            *view,
2444                            EvViewWindowChild *child,
2445                            gint               x,
2446                            gint               y)
2447 {
2448         child->x = x;
2449         child->y = y;
2450         gtk_window_move (GTK_WINDOW (child->window),
2451                          MAX (child->parent_x, x),
2452                          MAX (child->parent_y, y));
2453 }
2454
2455 static void
2456 ev_view_window_child_move_with_parent (EvView    *view,
2457                                        GtkWidget *window)
2458 {
2459         EvViewWindowChild *child;
2460         gint               root_x, root_y;
2461
2462         child = ev_view_get_window_child (view, window);
2463         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2464                                &root_x, &root_y);
2465         if (root_x != child->parent_x || root_y != child->parent_y) {
2466                 gint dest_x, dest_y;
2467
2468                 dest_x = child->x + (root_x - child->parent_x);
2469                 dest_y = child->y + (root_y - child->parent_y);
2470                 child->parent_x = root_x;
2471                 child->parent_y = root_y;
2472                 ev_view_window_child_move (view, child, dest_x, dest_y);
2473         }
2474
2475         if (child->visible && !GTK_WIDGET_VISIBLE (window))
2476                 gtk_widget_show (window);
2477 }
2478
2479 static void
2480 ev_view_window_child_put (EvView    *view,
2481                           GtkWidget *window,
2482                           guint      page,
2483                           gint       x,
2484                           gint       y,
2485                           gdouble    orig_x,
2486                           gdouble    orig_y)
2487 {
2488         EvViewWindowChild *child;
2489         gint               root_x, root_y;
2490
2491         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2492                                &root_x, &root_y);
2493
2494         child = g_new0 (EvViewWindowChild, 1);
2495         child->window = window;
2496         child->page = page;
2497         child->orig_x = orig_x;
2498         child->orig_y = orig_y;
2499         child->parent_x = root_x;
2500         child->parent_y = root_y;
2501         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2502         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2503
2504         if (child->visible)
2505                 gtk_widget_show (window);
2506         else
2507                 gtk_widget_hide (window);
2508
2509         view->window_children = g_list_append (view->window_children, child);
2510 }
2511
2512 static EvViewWindowChild *
2513 ev_view_find_window_child_for_annot (EvView       *view,
2514                                      guint         page,
2515                                      EvAnnotation *annot)
2516 {
2517         GList *children = view->window_children;
2518
2519         while (children) {
2520                 EvViewWindowChild *child;
2521                 EvAnnotation      *wannot;
2522
2523                 child = (EvViewWindowChild *)children->data;
2524                 children = children->next;
2525
2526                 if (child->page != page)
2527                         continue;
2528
2529                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2530                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2531                         return child;
2532         }
2533
2534         return NULL;
2535 }
2536
2537 static void
2538 ev_view_window_children_free (EvView *view)
2539 {
2540         GList *l;
2541
2542         if (!view->window_children)
2543                 return;
2544
2545         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2546                 EvViewWindowChild *child;
2547
2548                 child = (EvViewWindowChild *)l->data;
2549                 gtk_widget_destroy (GTK_WIDGET (child->window));
2550                 g_free (child);
2551         }
2552         g_list_free (view->window_children);
2553         view->window_children = NULL;
2554         view->window_child_focus = NULL;
2555 }
2556
2557 static void
2558 annotation_window_grab_focus (GtkWidget *widget,
2559                               EvView    *view)
2560 {
2561         if (view->window_child_focus)
2562                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2563         view->window_child_focus = ev_view_get_window_child (view, widget);
2564 }
2565
2566 static void
2567 annotation_window_closed (EvAnnotationWindow *window,
2568                           EvView             *view)
2569 {
2570         EvViewWindowChild *child;
2571
2572         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2573         child->visible = FALSE;
2574 }
2575
2576 static void
2577 annotation_window_moved (EvAnnotationWindow *window,
2578                          gint                x,
2579                          gint                y,
2580                          EvView             *view)
2581 {
2582         EvViewWindowChild *child;
2583         GdkRectangle       page_area;
2584         GtkBorder          border;
2585         GdkRectangle       view_rect;
2586         EvRectangle        doc_rect;
2587         gint               width, height;
2588
2589         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2590         if (child->x == x && child->y == y)
2591                 return;
2592
2593         child->moved = TRUE;
2594         child->x = x;
2595         child->y = y;
2596
2597         /* Window has been moved by the user,
2598          * we have to set a new origin in doc coords
2599          */
2600         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2601         view_rect.x = (x - child->parent_x) + view->scroll_x;
2602         view_rect.y = (y - child->parent_y) + view->scroll_y;
2603         view_rect.width = width;
2604         view_rect.height = height;
2605
2606         get_page_extents (view, child->page, &page_area, &border);
2607         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2608         child->orig_x = doc_rect.x1;
2609         child->orig_y = doc_rect.y1;
2610 }
2611
2612 static void
2613 ev_view_annotation_save (EvView       *view,
2614                          EvAnnotation *annot)
2615 {
2616         if (!view->document)
2617                 return;
2618
2619         if (!annot->changed)
2620                 return;
2621
2622         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2623                                                          annot, annot->contents);
2624         annot->changed = FALSE;
2625 }
2626
2627 static void
2628 show_annotation_windows (EvView *view,
2629                          gint    page)
2630 {
2631         GList     *annots, *l;
2632         GtkWindow *parent;
2633
2634         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2635
2636         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2637
2638         for (l = annots; l && l->data; l = g_list_next (l)) {
2639                 EvAnnotation      *annot;
2640                 EvViewWindowChild *child;
2641                 GtkWidget         *window;
2642                 EvRectangle       *doc_rect;
2643                 GdkRectangle       view_rect;
2644
2645                 annot = ((EvMapping *)(l->data))->data;
2646
2647                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2648                         continue;
2649
2650                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2651                         continue;
2652
2653                 window = g_object_get_data (G_OBJECT (annot), "popup");
2654                 if (window) {
2655                         ev_view_window_child_move_with_parent (view, window);
2656                         continue;
2657                 }
2658
2659                 /* Look if we already have a popup for this annot */
2660                 child = ev_view_find_window_child_for_annot (view, page, annot);
2661                 window = child ? child->window : NULL;
2662                 if (window) {
2663                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2664                         g_object_set_data (G_OBJECT (annot), "popup", window);
2665                         ev_view_window_child_move_with_parent (view, window);
2666                 } else {
2667                         window = ev_annotation_window_new (annot, parent);
2668                         g_signal_connect (window, "grab_focus",
2669                                           G_CALLBACK (annotation_window_grab_focus),
2670                                           view);
2671                         g_signal_connect (window, "closed",
2672                                           G_CALLBACK (annotation_window_closed),
2673                                           view);
2674                         g_signal_connect (window, "moved",
2675                                           G_CALLBACK (annotation_window_moved),
2676                                           view);
2677                         g_object_set_data (G_OBJECT (annot), "popup", window);
2678
2679                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2680                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2681                         view_rect.x -= view->scroll_x;
2682                         view_rect.y -= view->scroll_y;
2683
2684                         ev_view_window_child_put (view, window, page,
2685                                                   view_rect.x, view_rect.y,
2686                                                   doc_rect->x1, doc_rect->y1);
2687
2688                         g_object_weak_ref (G_OBJECT (annot),
2689                                            (GWeakNotify)ev_view_annotation_save,
2690                                            view);
2691                 }
2692         }
2693 }
2694
2695 static void
2696 hide_annotation_windows (EvView *view,
2697                          gint    page)
2698 {
2699         GList *annots, *l;
2700
2701         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2702
2703         for (l = annots; l && l->data; l = g_list_next (l)) {
2704                 EvAnnotation *annot;
2705                 GtkWidget    *window;
2706
2707                 annot = ((EvMapping *)(l->data))->data;
2708
2709                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2710                         continue;
2711
2712                 window = g_object_get_data (G_OBJECT (annot), "popup");
2713                 if (window)
2714                         gtk_widget_hide (window);
2715         }
2716 }
2717
2718 static EvAnnotation *
2719 ev_view_get_annotation_at_location (EvView  *view,
2720                                     gdouble  x,
2721                                     gdouble  y)
2722 {
2723         gint page = -1;
2724         gint x_new = 0, y_new = 0;
2725         GList *annotations_mapping;
2726
2727         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2728                 return NULL;
2729
2730         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2731                 return NULL;
2732
2733         annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
2734
2735         if (annotations_mapping)
2736                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2737         else
2738                 return NULL;
2739 }
2740
2741 static void
2742 ev_view_handle_annotation (EvView       *view,
2743                            EvAnnotation *annot,
2744                            gdouble       x,
2745                            gdouble       y,
2746                            guint32       timestamp)
2747 {
2748         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2749                 GtkWidget *window;
2750
2751                 window = g_object_get_data (G_OBJECT (annot), "popup");
2752                 if (window) {
2753                         EvViewWindowChild *child;
2754
2755                         child = ev_view_get_window_child (view, window);
2756                         if (!child->visible) {
2757                                 child->visible = TRUE;
2758                                 ev_view_window_child_move (view, child, child->x, child->y);
2759                                 gtk_widget_show (window);
2760                         }
2761                 }
2762         }
2763
2764         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2765                 EvAttachment *attachment = EV_ANNOTATION_ATTACHMENT (annot)->attachment;
2766
2767                 if (attachment) {
2768                         GError *error = NULL;
2769
2770                         ev_attachment_open (attachment,
2771                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2772                                             timestamp,
2773                                             &error);
2774
2775                         if (error) {
2776                                 g_warning ("%s", error->message);
2777                                 g_error_free (error);
2778                         }
2779                 }
2780         }
2781 }
2782
2783 /*** GtkWidget implementation ***/
2784
2785 static void
2786 ev_view_size_request_continuous_dual_page (EvView         *view,
2787                                            GtkRequisition *requisition)
2788 {
2789         gint n_pages;
2790
2791         n_pages = ev_document_get_n_pages (view->document) + 1;
2792         get_page_y_offset (view, n_pages, &requisition->height);
2793
2794         switch (view->sizing_mode) {
2795                 case EV_SIZING_FIT_WIDTH:
2796                 case EV_SIZING_BEST_FIT:
2797                         requisition->width = 1;
2798
2799                         break;
2800                 case EV_SIZING_FREE: {
2801                         gint max_width;
2802                         GtkBorder border;
2803
2804                         ev_view_get_max_page_size (view, &max_width, NULL);
2805                         compute_border (view, max_width, max_width, &border);
2806                         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2807                 }
2808                         break;
2809                 default:
2810                         g_assert_not_reached ();
2811         }
2812 }
2813
2814 static void
2815 ev_view_size_request_continuous (EvView         *view,
2816                                  GtkRequisition *requisition)
2817 {
2818         gint n_pages;
2819
2820         n_pages = ev_document_get_n_pages (view->document);
2821         get_page_y_offset (view, n_pages, &requisition->height);
2822
2823         switch (view->sizing_mode) {
2824                 case EV_SIZING_FIT_WIDTH:
2825                 case EV_SIZING_BEST_FIT:
2826                         requisition->width = 1;
2827
2828                         break;
2829                 case EV_SIZING_FREE: {
2830                         gint max_width;
2831                         GtkBorder border;
2832
2833                         ev_view_get_max_page_size (view, &max_width, NULL);
2834                         compute_border (view, max_width, max_width, &border);
2835                         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2836                 }
2837                         break;
2838                 default:
2839                         g_assert_not_reached ();
2840         }
2841 }
2842
2843 static void
2844 ev_view_size_request_dual_page (EvView         *view,
2845                                 GtkRequisition *requisition)
2846 {
2847         GtkBorder border;
2848         gint width, height;
2849
2850         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2851                 requisition->width = 1;
2852                 requisition->height = 1;
2853
2854                 return;
2855         }
2856
2857         /* Find the largest of the two. */
2858         ev_view_get_page_size (view,
2859                                view->current_page,
2860                                &width, &height);
2861         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2862                 gint width_2, height_2;
2863                 ev_view_get_page_size (view,
2864                                        view->current_page + 1,
2865                                        &width_2, &height_2);
2866                 if (width_2 > width) {
2867                         width = width_2;
2868                         height = height_2;
2869                 }
2870         }
2871         compute_border (view, width, height, &border);
2872
2873         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2874                 ((width + border.left + border.right) * 2) + (view->spacing * 3);
2875         requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
2876 }
2877
2878 static void
2879 ev_view_size_request_single_page (EvView         *view,
2880                                   GtkRequisition *requisition)
2881 {
2882         GtkBorder border;
2883         gint width, height;
2884
2885         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2886                 requisition->width = 1;
2887                 requisition->height = 1;
2888
2889                 return;
2890         }
2891
2892         ev_view_get_page_size (view, view->current_page, &width, &height);
2893         compute_border (view, width, height, &border);
2894
2895         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2896                 width + border.left + border.right + (2 * view->spacing);
2897         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2898 }
2899
2900 static void
2901 ev_view_size_request (GtkWidget      *widget,
2902                       GtkRequisition *requisition)
2903 {
2904         EvView *view = EV_VIEW (widget);
2905
2906         if (view->document == NULL) {
2907                 requisition->width = 1;
2908                 requisition->height = 1;
2909                 return;
2910         }
2911
2912         if (view->presentation) {
2913                 requisition->width = 1;
2914                 requisition->height = 1;
2915                 return;
2916         }
2917
2918         if (view->continuous && view->dual_page)
2919                 ev_view_size_request_continuous_dual_page (view, requisition);
2920         else if (view->continuous)
2921                 ev_view_size_request_continuous (view, requisition);
2922         else if (view->dual_page)
2923                 ev_view_size_request_dual_page (view, requisition);
2924         else
2925                 ev_view_size_request_single_page (view, requisition);
2926 }
2927
2928 static void
2929 ev_view_size_allocate (GtkWidget      *widget,
2930                        GtkAllocation  *allocation)
2931 {
2932         EvView *view = EV_VIEW (widget);
2933         GList  *children, *l;
2934         gint    root_x, root_y;
2935
2936         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2937
2938         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2939             view->sizing_mode == EV_SIZING_BEST_FIT) {
2940                 ev_view_zoom_for_size (view,
2941                                        allocation->width,
2942                                        allocation->height);
2943                 ev_view_size_request (widget, &widget->requisition);
2944         }
2945
2946         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2947         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2948
2949         if (view->document)
2950                 view_update_range_and_current_page (view);
2951
2952         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2953         view->pending_resize = FALSE;
2954         view->pending_point.x = 0;
2955         view->pending_point.y = 0;
2956
2957         children = gtk_container_get_children (GTK_CONTAINER (widget));
2958         for (l = children; l && l->data; l = g_list_next (l)) {
2959                 EvFormField   *field;
2960                 GdkRectangle   view_area;
2961                 GList         *form_field_mapping;
2962                 GtkAllocation  child_allocation;
2963                 GtkRequisition child_requisition;
2964                 GtkWidget     *child = (GtkWidget *)l->data;
2965
2966                 field = g_object_get_data (G_OBJECT (child), "form-field");
2967                 if (!field)
2968                         continue;
2969
2970                 form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2971                                                                            field->page->index);
2972                 ev_view_get_area_from_mapping (view, field->page->index,
2973                                                form_field_mapping,
2974                                                field, &view_area);
2975
2976                 gtk_widget_size_request (child, &child_requisition);
2977                 if (child_requisition.width != view_area.width ||
2978                     child_requisition.height != view_area.height)
2979                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2980
2981                 gtk_container_child_get (GTK_CONTAINER (widget),
2982                                          child,
2983                                          "x", &child_allocation.x,
2984                                          "y", &child_allocation.y,
2985                                          NULL);
2986                 if (child_allocation.x != view_area.x ||
2987                     child_allocation.y != view_area.y) {
2988                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2989                 }
2990         }
2991         g_list_free (children);
2992
2993         if (view->window_children)
2994                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2995                                        &root_x, &root_y);
2996
2997         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2998                 EvViewWindowChild *child;
2999                 EvRectangle        doc_rect;
3000                 GdkRectangle       view_rect;
3001
3002                 child = (EvViewWindowChild *)l->data;
3003
3004                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
3005                 if (child->moved) {
3006                         doc_rect.x1 = child->orig_x;
3007                         doc_rect.y1 = child->orig_y;
3008                 }
3009                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
3010                 view_rect.x -= view->scroll_x;
3011                 view_rect.y -= view->scroll_y;
3012
3013                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
3014                         child->parent_x = root_x;
3015                         child->parent_y = root_y;
3016                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
3017                 }
3018         }
3019 }
3020
3021 static void
3022 ev_view_realize (GtkWidget *widget)
3023 {
3024         EvView *view = EV_VIEW (widget);
3025
3026         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
3027                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
3028
3029         gdk_window_set_events (view->layout.bin_window,
3030                                (gdk_window_get_events (view->layout.bin_window) |
3031                                 GDK_EXPOSURE_MASK |
3032                                 GDK_BUTTON_PRESS_MASK |
3033                                 GDK_BUTTON_RELEASE_MASK |
3034                                 GDK_SCROLL_MASK |
3035                                 GDK_KEY_PRESS_MASK |
3036                                 GDK_POINTER_MOTION_MASK |
3037                                 GDK_POINTER_MOTION_HINT_MASK |
3038                                 GDK_ENTER_NOTIFY_MASK |
3039                                 GDK_LEAVE_NOTIFY_MASK));
3040
3041         if (view->presentation)
3042                 gdk_window_set_background (view->layout.bin_window, &widget->style->black);
3043         else
3044                 gdk_window_set_background (view->layout.bin_window, &widget->style->mid [GTK_STATE_NORMAL]);
3045
3046         on_adjustment_value_changed (NULL, view);
3047 }
3048
3049 static gboolean
3050 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3051 {
3052         EvView *view = EV_VIEW (widget);
3053         guint state;
3054
3055         state = event->state & gtk_accelerator_get_default_mod_mask ();
3056
3057         if (state == GDK_CONTROL_MASK && view->presentation == FALSE) {
3058                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
3059                 if (event->direction == GDK_SCROLL_UP ||
3060                     event->direction == GDK_SCROLL_LEFT) {
3061                         if (ev_view_can_zoom_in (view)) {
3062                                 ev_view_zoom_in (view);
3063                         }
3064                 } else {
3065                         if (ev_view_can_zoom_out (view)) {
3066                                 ev_view_zoom_out (view);
3067                         }
3068                 }
3069
3070                 return TRUE;
3071         }
3072
3073         view->jump_to_find_result = FALSE;
3074
3075         /* Shift+Wheel scrolls the in the perpendicular direction */
3076         if (state & GDK_SHIFT_MASK) {
3077                 if (event->direction == GDK_SCROLL_UP)
3078                         event->direction = GDK_SCROLL_LEFT;
3079                 else if (event->direction == GDK_SCROLL_LEFT)
3080                         event->direction = GDK_SCROLL_UP;
3081                 else if (event->direction == GDK_SCROLL_DOWN)
3082                         event->direction = GDK_SCROLL_RIGHT;
3083                 else if (event->direction == GDK_SCROLL_RIGHT)
3084                         event->direction = GDK_SCROLL_DOWN;
3085
3086                 event->state &= ~GDK_SHIFT_MASK;
3087                 state &= ~GDK_SHIFT_MASK;
3088         }
3089
3090         if (state == 0 &&
3091             (view->presentation ||
3092              (view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous))) {
3093                 switch (event->direction) {
3094                         case GDK_SCROLL_DOWN:
3095                         case GDK_SCROLL_RIGHT:
3096                                 ev_view_next_page (view);
3097                                 break;
3098                         case GDK_SCROLL_UP:
3099                         case GDK_SCROLL_LEFT:
3100                                 ev_view_previous_page (view);
3101                                 break;
3102                 }
3103
3104                 return TRUE;
3105         }
3106
3107         return FALSE;
3108 }
3109
3110 static EvViewSelection *
3111 find_selection_for_page (EvView *view,
3112                          gint    page)
3113 {
3114         GList *list;
3115
3116         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3117                 EvViewSelection *selection;
3118
3119                 selection = (EvViewSelection *) list->data;
3120
3121                 if (selection->page == page)
3122                         return selection;
3123         }
3124
3125         return NULL;
3126 }
3127
3128 static void
3129 draw_end_presentation_page (EvView       *view,
3130                             GdkRectangle *page_area)
3131 {
3132         PangoLayout *layout;
3133         PangoFontDescription *font_desc;
3134         gchar *markup;
3135         const gchar *text = _("End of presentation. Press Escape to exit.");
3136
3137         if (view->presentation_state != EV_PRESENTATION_END)
3138                 return;
3139
3140         layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), NULL);
3141         markup = g_strdup_printf ("<span foreground=\"white\">%s</span>", text);
3142         pango_layout_set_markup (layout, markup, -1);
3143         g_free (markup);
3144
3145         font_desc = pango_font_description_new ();
3146         pango_font_description_set_size (font_desc, 16 * PANGO_SCALE);
3147         pango_layout_set_font_description (layout, font_desc);
3148
3149         gtk_paint_layout (GTK_WIDGET (view)->style,
3150                           view->layout.bin_window,
3151                           GTK_WIDGET_STATE (view),
3152                           FALSE,
3153                           page_area,
3154                           GTK_WIDGET (view),
3155                           NULL,
3156                           page_area->x + 15,
3157                           page_area->y + 15,
3158                           layout);
3159
3160         pango_font_description_free (font_desc);
3161         g_object_unref (layout);
3162 }
3163
3164 static gboolean
3165 ev_view_expose_event (GtkWidget      *widget,
3166                       GdkEventExpose *event)
3167 {
3168         EvView  *view = EV_VIEW (widget);
3169         cairo_t *cr;
3170         gint     i;
3171
3172         if (view->animation) {
3173                 if (ev_transition_animation_ready (view->animation)) {
3174                         GdkRectangle page_area;
3175                         GtkBorder    border;
3176
3177                         if (get_page_extents (view, view->current_page, &page_area, &border)) {
3178                                 cr = gdk_cairo_create (view->layout.bin_window);
3179
3180                                 /* normalize to x=0, y=0 */
3181                                 cairo_translate (cr, page_area.x, page_area.y);
3182                                 page_area.x = page_area.y = 0;
3183
3184                                 ev_transition_animation_paint (view->animation, cr, page_area);
3185                                 cairo_destroy (cr);
3186                         }
3187                 }
3188
3189                 return TRUE;
3190         }
3191
3192         if (view->presentation) {
3193                 switch (view->presentation_state) {
3194                         case EV_PRESENTATION_END: {
3195                                 GdkRectangle area = {0};
3196
3197                                 area.width = widget->allocation.width;
3198                                 area.height = widget->allocation.height;
3199
3200                                 draw_end_presentation_page (view, &area);
3201                         }
3202                                 return FALSE;
3203                         case EV_PRESENTATION_BLACK:
3204                         case EV_PRESENTATION_WHITE:
3205                                 return FALSE;
3206                         case EV_PRESENTATION_NORMAL:
3207                         default:
3208                                 break;
3209                 }
3210         } else if (view->loading) {
3211                 GdkRectangle area = {0};
3212
3213                 area.width = widget->allocation.width;
3214                 area.height = widget->allocation.height;
3215
3216                 draw_loading_text (view,
3217                                    &area,
3218                                    &(event->area));
3219         }
3220
3221         if (view->document == NULL)
3222                 return FALSE;
3223
3224         cr = gdk_cairo_create (view->layout.bin_window);
3225
3226         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3227                 GdkRectangle page_area;
3228                 GtkBorder border;
3229                 gboolean page_ready = TRUE;
3230
3231                 if (!get_page_extents (view, i, &page_area, &border))
3232                         continue;
3233
3234                 page_area.x -= view->scroll_x;
3235                 page_area.y -= view->scroll_y;
3236
3237                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3238
3239                 if (page_ready && view->find_pages && view->highlight_find_results)
3240                         highlight_find_results (view, i);
3241                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3242                         show_annotation_windows (view, i);
3243         }
3244
3245         cairo_destroy (cr);
3246
3247         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3248                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3249
3250         return FALSE;
3251 }
3252
3253 static gboolean
3254 ev_view_do_popup_menu (EvView *view,
3255                        gdouble x,
3256                        gdouble y)
3257 {
3258         EvLink       *link;
3259         EvImage      *image;
3260         EvAnnotation *annot;
3261
3262         image = ev_view_get_image_at_location (view, x, y);
3263         if (image) {
3264                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, image);
3265                 return TRUE;
3266         }
3267
3268         link = ev_view_get_link_at_location (view, x, y);
3269         if (link) {
3270                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, link);
3271                 return TRUE;
3272         }
3273
3274         annot = ev_view_get_annotation_at_location (view, x, y);
3275         if (annot) {
3276                 g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, annot);
3277                 return TRUE;
3278         }
3279
3280         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, NULL);
3281
3282         return TRUE;
3283 }
3284
3285 static gboolean
3286 ev_view_popup_menu (GtkWidget *widget)
3287 {
3288         gint x, y;
3289
3290         gtk_widget_get_pointer (widget, &x, &y);
3291         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3292 }
3293
3294 static void
3295 get_link_area (EvView       *view,
3296                gint          x,
3297                gint          y,
3298                EvLink       *link,
3299                GdkRectangle *area)
3300 {
3301         GList *link_mapping;
3302         gint   page;
3303         gint   x_offset = 0, y_offset = 0;
3304
3305         x += view->scroll_x;
3306         y += view->scroll_y;
3307
3308         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3309
3310         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
3311         ev_view_get_area_from_mapping (view, page,
3312                                        link_mapping,
3313                                        link, area);
3314 }
3315
3316 static void
3317 get_annot_area (EvView       *view,
3318                gint          x,
3319                gint          y,
3320                EvAnnotation *annot,
3321                GdkRectangle *area)
3322 {
3323         GList *annot_mapping;
3324         gint   page;
3325         gint   x_offset = 0, y_offset = 0;
3326
3327         x += view->scroll_x;
3328         y += view->scroll_y;
3329
3330         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3331
3332         annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
3333         ev_view_get_area_from_mapping (view, page,
3334                                        annot_mapping,
3335                                        annot, area);
3336 }
3337
3338 static gboolean
3339 ev_view_query_tooltip (GtkWidget  *widget,
3340                        gint        x,
3341                        gint        y,
3342                        gboolean    keyboard_tip,
3343                        GtkTooltip *tooltip)
3344 {
3345         EvView       *view = EV_VIEW (widget);
3346         EvLink       *link;
3347         EvAnnotation *annot;
3348         gchar        *text;
3349
3350         annot = ev_view_get_annotation_at_location (view, x, y);
3351         if (annot && annot->contents) {
3352                 GdkRectangle annot_area;
3353
3354                 get_annot_area (view, x, y, annot, &annot_area);
3355                 gtk_tooltip_set_text (tooltip, annot->contents);
3356                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3357
3358                 return TRUE;
3359         }
3360
3361         link = ev_view_get_link_at_location (view, x, y);
3362         if (!link)
3363                 return FALSE;
3364
3365         text = tip_from_link (view, link);
3366         if (text && g_utf8_validate (text, -1, NULL)) {
3367                 GdkRectangle link_area;
3368
3369                 get_link_area (view, x, y, link, &link_area);
3370                 gtk_tooltip_set_text (tooltip, text);
3371                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3372         }
3373         g_free (text);
3374
3375         return TRUE;
3376 }
3377
3378 static void
3379 start_selection_for_event (EvView         *view,
3380                            GdkEventButton *event)
3381 {
3382         clear_selection (view);
3383
3384         view->selection_info.start.x = event->x + view->scroll_x;
3385         view->selection_info.start.y = event->y + view->scroll_y;
3386
3387         switch (event->type) {
3388                 case GDK_2BUTTON_PRESS:
3389                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3390                         break;
3391                 case GDK_3BUTTON_PRESS:
3392                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3393                         break;
3394                 default:
3395                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3396                         return;
3397         }
3398
3399         /* In case of WORD or LINE, compute selections now */
3400         compute_selections (view,
3401                             view->selection_info.style,
3402                             &(view->selection_info.start),
3403                             &(view->selection_info.start));
3404 }
3405
3406 static gboolean
3407 ev_view_button_press_event (GtkWidget      *widget,
3408                             GdkEventButton *event)
3409 {
3410         EvView *view = EV_VIEW (widget);
3411
3412         if (!view->document)
3413                 return FALSE;
3414
3415         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
3416                 gtk_widget_grab_focus (widget);
3417         }
3418
3419         if (view->window_child_focus) {
3420                 EvAnnotationWindow *window;
3421                 EvAnnotation       *annot;
3422
3423                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3424                 annot = ev_annotation_window_get_annotation (window);
3425                 ev_annotation_window_ungrab_focus (window);
3426                 ev_view_annotation_save (view, annot);
3427                 view->window_child_focus = NULL;
3428         }
3429
3430         view->pressed_button = event->button;
3431         view->selection_info.in_drag = FALSE;
3432
3433         if (view->presentation)
3434                 return FALSE;
3435
3436         if (view->scroll_info.autoscrolling)
3437                 return TRUE;
3438
3439         switch (event->button) {
3440                 case 1: {
3441                         EvImage *image;
3442                         EvAnnotation *annot;
3443                         EvFormField *field;
3444
3445                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3446                                 if (event->type == GDK_3BUTTON_PRESS) {
3447                                         start_selection_for_event (view, event);
3448                                 } else if (location_in_selected_text (view,
3449                                                                event->x + view->scroll_x,
3450                                                                event->y + view->scroll_y)) {
3451                                         view->selection_info.in_drag = TRUE;
3452                                 } else {
3453                                         start_selection_for_event (view, event);
3454                                 }
3455
3456                                 gtk_widget_queue_draw (widget);
3457                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3458                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3459                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3460                                 ev_view_remove_all (view);
3461                                 ev_view_handle_form_field (view, field, event->x, event->y);
3462                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3463                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3464                                 if (view->image_dnd_info.image)
3465                                         g_object_unref (view->image_dnd_info.image);
3466                                 view->image_dnd_info.image = g_object_ref (image);
3467                                 view->image_dnd_info.in_drag = TRUE;
3468
3469                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3470                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3471                         } else {
3472                                 ev_view_remove_all (view);
3473
3474                                 if (EV_IS_SELECTION (view->document))
3475                                         start_selection_for_event (view, event);
3476                         }
3477                 }
3478                         return TRUE;
3479                 case 2:
3480                         /* use root coordinates as reference point because
3481                          * scrolling changes window relative coordinates */
3482                         view->drag_info.start.x = event->x_root;
3483                         view->drag_info.start.y = event->y_root;
3484                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3485                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3486
3487                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3488
3489                         return TRUE;
3490                 case 3:
3491                         view->scroll_info.start_y = event->y;
3492                         return ev_view_do_popup_menu (view, event->x, event->y);
3493         }
3494
3495         return FALSE;
3496 }
3497
3498 static void
3499 ev_view_remove_all (EvView *view)
3500 {
3501         GList *children, *child;
3502
3503         children = gtk_container_get_children (GTK_CONTAINER (view));
3504         for (child = children; child && child->data; child = g_list_next (child)) {
3505                 gtk_container_remove (GTK_CONTAINER (view),
3506                                       GTK_WIDGET (child->data));
3507         }
3508         g_list_free (children);
3509 }
3510
3511 /*** Drag and Drop ***/
3512 static void
3513 ev_view_drag_data_get (GtkWidget        *widget,
3514                        GdkDragContext   *context,
3515                        GtkSelectionData *selection_data,
3516                        guint             info,
3517                        guint             time)
3518 {
3519         EvView *view = EV_VIEW (widget);
3520
3521         switch (info) {
3522                 case TARGET_DND_TEXT:
3523                         if (EV_IS_SELECTION (view->document) &&
3524                             view->selection_info.selections) {
3525                                 gchar *text;
3526
3527                                 text = get_selected_text (view);
3528                                 gtk_selection_data_set_text (selection_data,
3529                                                              text,
3530                                                              strlen (text));
3531                                 g_free (text);
3532                         }
3533                         break;
3534                 case TARGET_DND_IMAGE:
3535                         if (view->image_dnd_info.image) {
3536                                 GdkPixbuf *pixbuf;
3537
3538                                 ev_document_doc_mutex_lock ();
3539                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3540                                                                        view->image_dnd_info.image);
3541                                 ev_document_doc_mutex_unlock ();
3542
3543                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3544                                 g_object_unref (pixbuf);
3545                         }
3546                         break;
3547                 case TARGET_DND_URI:
3548                         if (view->image_dnd_info.image) {
3549                                 GdkPixbuf   *pixbuf;
3550                                 const gchar *tmp_uri;
3551                                 gchar       *uris[2];
3552
3553                                 ev_document_doc_mutex_lock ();
3554                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3555                                                                        view->image_dnd_info.image);
3556                                 ev_document_doc_mutex_unlock ();
3557
3558                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3559                                 g_object_unref (pixbuf);
3560
3561                                 uris[0] = (gchar *)tmp_uri;
3562                                 uris[1] = NULL;
3563                                 gtk_selection_data_set_uris (selection_data, uris);
3564                         }
3565         }
3566 }
3567
3568 static gboolean
3569 ev_view_drag_motion (GtkWidget      *widget,
3570                      GdkDragContext *context,
3571                      gint            x,
3572                      gint            y,
3573                      guint           time)
3574 {
3575         if (gtk_drag_get_source_widget (context) == widget)
3576                 gdk_drag_status (context, 0, time);
3577         else
3578                 gdk_drag_status (context, context->suggested_action, time);
3579
3580         return TRUE;
3581 }
3582
3583 static gboolean
3584 selection_update_idle_cb (EvView *view)
3585 {
3586         compute_selections (view,
3587                             view->selection_info.style,
3588                             &view->selection_info.start,
3589                             &view->motion);
3590         view->selection_update_id = 0;
3591         return FALSE;
3592 }
3593
3594 static gboolean
3595 selection_scroll_timeout_cb (EvView *view)
3596 {
3597         gint x, y, shift = 0;
3598         GtkWidget *widget = GTK_WIDGET (view);
3599
3600         gtk_widget_get_pointer (widget, &x, &y);
3601
3602         if (y > widget->allocation.height) {
3603                 shift = (y - widget->allocation.height) / 2;
3604         } else if (y < 0) {
3605                 shift = y / 2;
3606         }
3607
3608         if (shift)
3609                 gtk_adjustment_set_value (view->vadjustment,
3610                                           CLAMP (view->vadjustment->value + shift,
3611                                           view->vadjustment->lower,
3612                                           view->vadjustment->upper -
3613                                           view->vadjustment->page_size));
3614
3615         if (x > widget->allocation.width) {
3616                 shift = (x - widget->allocation.width) / 2;
3617         } else if (x < 0) {
3618                 shift = x / 2;
3619         }
3620
3621         if (shift)
3622                 gtk_adjustment_set_value (view->hadjustment,
3623                                           CLAMP (view->hadjustment->value + shift,
3624                                           view->hadjustment->lower,
3625                                           view->hadjustment->upper -
3626                                           view->hadjustment->page_size));
3627
3628         return TRUE;
3629 }
3630
3631 static gboolean
3632 ev_view_drag_update_momentum (EvView *view)
3633 {
3634         int i;
3635         if (!view->drag_info.in_drag)
3636                 return FALSE;
3637
3638         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3639                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3640                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3641         }
3642
3643         /* Momentum is a moving average of 10ms granularity over
3644          * the last 100ms with each 10ms stored in buffer.
3645          */
3646
3647         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3648         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3649
3650         return TRUE;
3651 }
3652
3653 static gboolean
3654 ev_view_scroll_drag_release (EvView *view)
3655 {
3656         gdouble dhadj_value, dvadj_value;
3657         gdouble oldhadjustment, oldvadjustment;
3658
3659         view->drag_info.momentum.x /= 1.2;
3660         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3661
3662         dhadj_value = view->hadjustment->page_size *
3663                       (gdouble)view->drag_info.momentum.x / GTK_WIDGET (view)->allocation.width;
3664         dvadj_value = view->vadjustment->page_size *
3665                       (gdouble)view->drag_info.momentum.y / GTK_WIDGET (view)->allocation.height;
3666
3667         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3668         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3669
3670      /* When we reach the edges, we need either to absorb some momentum and bounce by
3671       * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3672      if (((oldhadjustment + dhadj_value) > (view->hadjustment->upper - view->hadjustment->page_size)) ||
3673            ((oldhadjustment + dhadj_value) < 0))
3674                 view->drag_info.momentum.x = 0;
3675         if (((oldvadjustment + dvadj_value) > (view->vadjustment->upper - view->vadjustment->page_size)) ||
3676            ((oldvadjustment + dvadj_value) < 0))
3677                 view->drag_info.momentum.y = 0;
3678
3679         gtk_adjustment_set_value (view->hadjustment,
3680                                 MIN (oldhadjustment + dhadj_value,
3681                                 view->hadjustment->upper - view->hadjustment->page_size));
3682         gtk_adjustment_set_value (view->vadjustment,
3683                                 MIN (oldvadjustment + dvadj_value,
3684                                 view->vadjustment->upper - view->vadjustment->page_size));
3685
3686         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3687            ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3688                 return FALSE;
3689         else
3690                 return TRUE;
3691 }
3692
3693 static gboolean
3694 ev_view_motion_notify_event (GtkWidget      *widget,
3695                              GdkEventMotion *event)
3696 {
3697         EvView *view = EV_VIEW (widget);
3698         gint x, y;
3699
3700         if (!view->document)
3701                 return FALSE;
3702
3703         if (event->is_hint || event->window != view->layout.bin_window) {
3704             gtk_widget_get_pointer (widget, &x, &y);
3705         } else {
3706             x = event->x;
3707             y = event->y;
3708         }
3709
3710         if (view->presentation) {
3711                 ev_view_handle_cursor_over_xy (view, x, y);
3712                 return FALSE;
3713         }
3714
3715         if (view->scroll_info.autoscrolling) {
3716                 view->scroll_info.last_y = y;
3717                 return TRUE;
3718         }
3719
3720         if (view->selection_info.in_drag) {
3721                 if (gtk_drag_check_threshold (widget,
3722                                               view->selection_info.start.x,
3723                                               view->selection_info.start.y,
3724                                               x, y)) {
3725                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3726
3727                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3728
3729                         gtk_drag_begin (widget, target_list,
3730                                         GDK_ACTION_COPY,
3731                                         1, (GdkEvent *)event);
3732
3733                         view->selection_info.in_drag = FALSE;
3734
3735                         gtk_target_list_unref (target_list);
3736
3737                         return TRUE;
3738                 }
3739         } else if (view->image_dnd_info.in_drag) {
3740                 if (gtk_drag_check_threshold (widget,
3741                                               view->selection_info.start.x,
3742                                               view->selection_info.start.y,
3743                                               x, y)) {
3744                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3745
3746                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3747                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3748
3749                         gtk_drag_begin (widget, target_list,
3750                                         GDK_ACTION_COPY,
3751                                         1, (GdkEvent *)event);
3752
3753                         view->image_dnd_info.in_drag = FALSE;
3754
3755                         gtk_target_list_unref (target_list);
3756
3757                         return TRUE;
3758                 }
3759         }
3760
3761         switch (view->pressed_button) {
3762         case 1:
3763                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3764                  * documents only.
3765                  */
3766                 if (view->rotation != 0)
3767                         return FALSE;
3768
3769                 /* Schedule timeout to scroll during selection and additionally
3770                  * scroll once to allow arbitrary speed. */
3771                 if (!view->selection_scroll_id)
3772                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3773                                                                (GSourceFunc)selection_scroll_timeout_cb,
3774                                                                view);
3775                 else
3776                     selection_scroll_timeout_cb (view);
3777
3778                 view->selection_info.in_selection = TRUE;
3779                 view->motion.x = x + view->scroll_x;
3780                 view->motion.y = y + view->scroll_y;
3781
3782                 /* Queue an idle to handle the motion.  We do this because
3783                  * handling any selection events in the motion could be slower
3784                  * than new motion events reach us.  We always put it in the
3785                  * idle to make sure we catch up and don't visibly lag the
3786                  * mouse. */
3787                 if (!view->selection_update_id)
3788                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3789
3790                 return TRUE;
3791         case 2:
3792                 if (!view->drag_info.in_drag) {
3793                         gboolean start;
3794                         int i;
3795
3796                         start = gtk_drag_check_threshold (widget,
3797                                                           view->drag_info.start.x,
3798                                                           view->drag_info.start.y,
3799                                                           event->x_root,
3800                                                           event->y_root);
3801                         view->drag_info.in_drag = start;
3802                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3803                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3804                         /* Set 100 to choose how long it takes to build up momentum */
3805                         /* Clear out previous momentum info: */
3806                         for (i = 0; i < DRAG_HISTORY; i++) {
3807                                 view->drag_info.buffer[i].x = event->x;
3808                                 view->drag_info.buffer[i].y = event->y;
3809                         }
3810                         view->drag_info.momentum.x = 0;
3811                         view->drag_info.momentum.y = 0;
3812                 }
3813
3814                 if (view->drag_info.in_drag) {
3815                         int dx, dy;
3816                         gdouble dhadj_value, dvadj_value;
3817
3818                         view->drag_info.buffer[0].x = event->x;
3819                         view->drag_info.buffer[0].y = event->y;
3820
3821                         dx = event->x_root - view->drag_info.start.x;
3822                         dy = event->y_root - view->drag_info.start.y;
3823
3824                         dhadj_value = view->hadjustment->page_size *
3825                                       (gdouble)dx / widget->allocation.width;
3826                         dvadj_value = view->vadjustment->page_size *
3827                                       (gdouble)dy / widget->allocation.height;
3828
3829                         /* clamp scrolling to visible area */
3830                         gtk_adjustment_set_value (view->hadjustment,
3831                                                   MIN(view->drag_info.hadj - dhadj_value,
3832                                                       view->hadjustment->upper -
3833                                                       view->hadjustment->page_size));
3834                         gtk_adjustment_set_value (view->vadjustment,
3835                                                   MIN(view->drag_info.vadj - dvadj_value,
3836                                                       view->vadjustment->upper -
3837                                                       view->vadjustment->page_size));
3838
3839                         return TRUE;
3840                 }
3841
3842                 break;
3843         default:
3844                 ev_view_handle_cursor_over_xy (view, x, y);
3845         }
3846
3847         return FALSE;
3848 }
3849
3850 static gboolean
3851 ev_view_button_release_event (GtkWidget      *widget,
3852                               GdkEventButton *event)
3853 {
3854         EvView *view = EV_VIEW (widget);
3855         EvLink *link = NULL;
3856
3857         view->image_dnd_info.in_drag = FALSE;
3858
3859         if (view->scroll_info.autoscrolling) {
3860                 ev_view_autoscroll_stop (view);
3861                 view->pressed_button = -1;
3862
3863                 return TRUE;
3864         }
3865
3866         if (view->drag_info.in_drag) {
3867                 view->drag_info.release_timeout_id =
3868                         g_timeout_add (20,
3869                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3870         }
3871
3872         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3873                 link = ev_view_get_link_at_location (view, event->x, event->y);
3874         }
3875
3876         view->drag_info.in_drag = FALSE;
3877
3878         if (view->presentation) {
3879                 view->pressed_button = -1;
3880
3881                 switch (event->button) {
3882                 case 1:
3883                         if (link)
3884                                 ev_view_handle_link (view, link);
3885                         else
3886                                 ev_view_next_page (view);
3887                         break;
3888                 case 3:
3889                         ev_view_previous_page (view);
3890                 }
3891
3892                 return FALSE;
3893         }
3894
3895         if (view->pressed_button == 2) {
3896                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3897         }
3898
3899         view->pressed_button = -1;
3900
3901         if (view->selection_scroll_id) {
3902             g_source_remove (view->selection_scroll_id);
3903             view->selection_scroll_id = 0;
3904         }
3905         if (view->selection_update_id) {
3906             g_source_remove (view->selection_update_id);
3907             view->selection_update_id = 0;
3908         }
3909
3910         if (view->selection_info.selections) {
3911                 clear_link_selected (view);
3912                 ev_view_update_primary_selection (view);
3913
3914                 if (view->selection_info.in_drag) {
3915                         clear_selection (view);
3916                         gtk_widget_queue_draw (widget);
3917                 }
3918
3919                 view->selection_info.in_drag = FALSE;
3920         } else if (link) {
3921                 if (event->button == 2) {
3922                         EvLinkAction    *action;
3923                         EvLinkActionType type;
3924
3925                         action = ev_link_get_action (link);
3926                         if (!action)
3927                                 return FALSE;
3928
3929                         type = ev_link_action_get_action_type (action);
3930                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3931                                 g_signal_emit (view,
3932                                                signals[SIGNAL_EXTERNAL_LINK],
3933                                                0, action);
3934                         }
3935                 } else {
3936                         ev_view_handle_link (view, link);
3937                 }
3938         } else if (view->presentation) {
3939                 switch (event->button) {
3940                         case 1:
3941                                 ev_view_next_page (view);
3942                                 return TRUE;
3943                         case 3:
3944                                 ev_view_previous_page (view);
3945                                 return TRUE;
3946                 }
3947         }
3948
3949         return FALSE;
3950 }
3951
3952 /* Goto Window */
3953 /* Cut and paste from gtkwindow.c */
3954 static void
3955 send_focus_change (GtkWidget *widget,
3956                    gboolean   in)
3957 {
3958         GdkEvent *fevent = gdk_event_new (GDK_FOCUS_CHANGE);
3959
3960         g_object_ref (widget);
3961
3962         if (in)
3963                 GTK_WIDGET_SET_FLAGS (widget, GTK_HAS_FOCUS);
3964         else
3965                 GTK_WIDGET_UNSET_FLAGS (widget, GTK_HAS_FOCUS);
3966
3967         fevent->focus_change.type = GDK_FOCUS_CHANGE;
3968         fevent->focus_change.window = g_object_ref (widget->window);
3969         fevent->focus_change.in = in;
3970
3971         gtk_widget_event (widget, fevent);
3972
3973         g_object_notify (G_OBJECT (widget), "has-focus");
3974
3975         g_object_unref (widget);
3976         gdk_event_free (fevent);
3977 }
3978
3979 static void
3980 ev_view_goto_window_hide (EvView *view)
3981 {
3982         /* send focus-in event */
3983         send_focus_change (view->goto_entry, FALSE);
3984         gtk_widget_hide (view->goto_window);
3985         gtk_entry_set_text (GTK_ENTRY (view->goto_entry), "");
3986 }
3987
3988 static gboolean
3989 ev_view_goto_window_delete_event (GtkWidget   *widget,
3990                                   GdkEventAny *event,
3991                                   EvView      *view)
3992 {
3993         ev_view_goto_window_hide (view);
3994
3995         return TRUE;
3996 }
3997
3998 static gboolean
3999 key_is_numeric (guint keyval)
4000 {
4001         return ((keyval >= GDK_0 && keyval <= GDK_9) ||
4002                 (keyval >= GDK_KP_0 && keyval <= GDK_KP_9));
4003 }
4004
4005 static gboolean
4006 ev_view_goto_window_key_press_event (GtkWidget   *widget,
4007                                      GdkEventKey *event,
4008                                      EvView      *view)
4009 {
4010         switch (event->keyval) {
4011                 case GDK_Escape:
4012                 case GDK_Tab:
4013                 case GDK_KP_Tab:
4014                 case GDK_ISO_Left_Tab:
4015                         ev_view_goto_window_hide (view);
4016                         return TRUE;
4017                 case GDK_Return:
4018                 case GDK_KP_Enter:
4019                 case GDK_ISO_Enter:
4020                 case GDK_BackSpace:
4021                 case GDK_Delete:
4022                         return FALSE;
4023                 default:
4024                         if (!key_is_numeric (event->keyval))
4025                                 return TRUE;
4026         }
4027
4028         return FALSE;
4029 }
4030
4031 static gboolean
4032 ev_view_goto_window_button_press_event (GtkWidget      *widget,
4033                                         GdkEventButton *event,
4034                                         EvView         *view)
4035 {
4036         ev_view_goto_window_hide (view);
4037
4038         return TRUE;
4039 }
4040
4041 static void
4042 ev_view_goto_entry_activate (GtkEntry *entry,
4043                              EvView   *view)
4044 {
4045         const gchar *text;
4046         gint         page;
4047
4048         text = gtk_entry_get_text (entry);
4049         page = atoi (text) - 1;
4050
4051         ev_view_goto_window_hide (view);
4052
4053         if (page >= 0 && page < ev_document_get_n_pages (view->document)) {
4054                 ev_document_model_set_page (view->model, page);
4055         }
4056 }
4057
4058 static void
4059 ev_view_goto_window_create (EvView *view)
4060 {
4061         GtkWidget *frame, *hbox, *toplevel, *label;
4062
4063         toplevel = gtk_widget_get_toplevel (GTK_WIDGET (view));
4064
4065         if (view->goto_window) {
4066                 if (GTK_WINDOW (toplevel)->group)
4067                         gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
4068                                                      GTK_WINDOW (view->goto_window));
4069                 else if (GTK_WINDOW (view->goto_window)->group)
4070                         gtk_window_group_remove_window (GTK_WINDOW (view->goto_window)->group,
4071                                                         GTK_WINDOW (view->goto_window));
4072                 return;
4073         }
4074
4075         view->goto_window = gtk_window_new (GTK_WINDOW_POPUP);
4076         gtk_window_set_screen (GTK_WINDOW (view->goto_window),
4077                                gtk_widget_get_screen (GTK_WIDGET (view)));
4078
4079         if (GTK_WINDOW (toplevel)->group)
4080                 gtk_window_group_add_window (GTK_WINDOW (toplevel)->group,
4081                                              GTK_WINDOW (view->goto_window));
4082
4083         gtk_window_set_modal (GTK_WINDOW (view->goto_window), TRUE);
4084
4085         g_signal_connect (view->goto_window, "delete_event",
4086                           G_CALLBACK (ev_view_goto_window_delete_event),
4087                           view);
4088         g_signal_connect (view->goto_window, "key_press_event",
4089                           G_CALLBACK (ev_view_goto_window_key_press_event),
4090                           view);
4091         g_signal_connect (view->goto_window, "button_press_event",
4092                           G_CALLBACK (ev_view_goto_window_button_press_event),
4093                           view);
4094
4095         frame = gtk_frame_new (NULL);
4096         gtk_frame_set_shadow_type (GTK_FRAME (frame), GTK_SHADOW_ETCHED_IN);
4097         gtk_container_add (GTK_CONTAINER (view->goto_window), frame);
4098         gtk_widget_show (frame);
4099
4100         hbox = gtk_hbox_new (FALSE, 0);
4101         gtk_container_set_border_width (GTK_CONTAINER (hbox), 3);
4102         gtk_container_add (GTK_CONTAINER (frame), hbox);
4103         gtk_widget_show (hbox);
4104
4105         label = gtk_label_new(_("Jump to page:"));
4106         gtk_box_pack_start (GTK_BOX (hbox), label, TRUE, TRUE, 3);
4107         gtk_widget_show (label);
4108         gtk_widget_realize (label);
4109
4110         view->goto_entry = gtk_entry_new ();
4111         g_signal_connect (view->goto_entry, "activate",
4112                           G_CALLBACK (ev_view_goto_entry_activate),
4113                           view);
4114         gtk_box_pack_start (GTK_BOX (hbox), view->goto_entry, TRUE, TRUE, 0);
4115         gtk_widget_show (view->goto_entry);
4116         gtk_widget_realize (view->goto_entry);
4117 }
4118
4119 static void
4120 ev_view_goto_entry_grab_focus (EvView *view)
4121 {
4122         GtkWidgetClass *entry_parent_class;
4123
4124         entry_parent_class = g_type_class_peek_parent (GTK_ENTRY_GET_CLASS (view->goto_entry));
4125         (entry_parent_class->grab_focus) (view->goto_entry);
4126
4127         send_focus_change (view->goto_entry, TRUE);
4128 }
4129
4130 static void
4131 ev_view_goto_window_send_key_event (EvView   *view,
4132                                     GdkEvent *event)
4133 {
4134         GdkEventKey *new_event;
4135         GdkScreen   *screen;
4136
4137         /* Move goto window off screen */
4138         screen = gtk_widget_get_screen (GTK_WIDGET (view));
4139         gtk_window_move (GTK_WINDOW (view->goto_window),
4140                          gdk_screen_get_width (screen) + 1,
4141                          gdk_screen_get_height (screen) + 1);
4142         gtk_widget_show (view->goto_window);
4143
4144         new_event = (GdkEventKey *) gdk_event_copy (event);
4145         g_object_unref (new_event->window);
4146         new_event->window = g_object_ref (view->goto_window->window);
4147         gtk_widget_realize (view->goto_window);
4148
4149         gtk_widget_event (view->goto_window, (GdkEvent *)new_event);
4150         gdk_event_free ((GdkEvent *)new_event);
4151         gtk_widget_hide (view->goto_window);
4152 }
4153
4154 static gboolean
4155 ev_view_key_press_event (GtkWidget   *widget,
4156                          GdkEventKey *event)
4157 {
4158         EvView *view = EV_VIEW (widget);
4159         EvPresentationState current;
4160
4161         if (!view->document)
4162                 return FALSE;
4163
4164         if (!GTK_WIDGET_HAS_FOCUS (widget)) {
4165                 /* Forward key events to current focused window child */
4166                 if (view->window_child_focus) {
4167                         GdkEventKey *new_event;
4168                         gboolean     handled;
4169
4170                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
4171                         g_object_unref (new_event->window);
4172                         new_event->window = g_object_ref (view->window_child_focus->window->window);
4173                         gtk_widget_realize (view->window_child_focus->window);
4174                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
4175                         gdk_event_free ((GdkEvent *)new_event);
4176
4177                         return handled;
4178                 }
4179
4180                 return FALSE;
4181         }
4182
4183         if (!view->presentation ||
4184             view->presentation_state == EV_PRESENTATION_END)
4185                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4186
4187
4188         current = view->presentation_state;
4189
4190         switch (event->keyval) {
4191                 case GDK_b:
4192                 case GDK_B:
4193                 case GDK_period:
4194                 case GDK_KP_Decimal:
4195                         view->presentation_state =
4196                                 (view->presentation_state == EV_PRESENTATION_BLACK) ?
4197                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_BLACK;
4198                         break;
4199                 case GDK_w:
4200                 case GDK_W:
4201                         view->presentation_state =
4202                                 (view->presentation_state == EV_PRESENTATION_WHITE) ?
4203                                 EV_PRESENTATION_NORMAL : EV_PRESENTATION_WHITE;
4204                         break;
4205                 default:
4206                         if (view->presentation_state == EV_PRESENTATION_BLACK ||
4207                             view->presentation_state == EV_PRESENTATION_WHITE) {
4208                                 view->presentation_state = EV_PRESENTATION_NORMAL;
4209                         }
4210         }
4211
4212         if (current == view->presentation_state) {
4213                 if (ev_document_get_n_pages (view->document) > 1 &&
4214                     key_is_numeric (event->keyval)) {
4215                         gint x, y;
4216
4217                         ev_view_goto_window_create (view);
4218                         ev_view_goto_window_send_key_event (view, (GdkEvent *)event);
4219                         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4220                         gtk_window_move (GTK_WINDOW (view->goto_window), x, y);
4221                         gtk_widget_show (view->goto_window);
4222                         ev_view_goto_entry_grab_focus (view);
4223
4224                         return TRUE;
4225                 }
4226
4227                 return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4228         }
4229
4230         switch (view->presentation_state) {
4231                 case EV_PRESENTATION_NORMAL:
4232                 case EV_PRESENTATION_BLACK:
4233                         gdk_window_set_background (view->layout.bin_window,
4234                                                    &widget->style->black);
4235                         break;
4236                 case EV_PRESENTATION_WHITE:
4237                         gdk_window_set_background (view->layout.bin_window,
4238                                                    &widget->style->white);
4239                         break;
4240                 default:
4241                         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
4242         }
4243
4244         gtk_widget_queue_draw (widget);
4245         return TRUE;
4246 }
4247
4248 static gint
4249 ev_view_focus_in (GtkWidget     *widget,
4250                   GdkEventFocus *event)
4251 {
4252         if (EV_VIEW (widget)->pixbuf_cache)
4253                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4254         gtk_widget_queue_draw (widget);
4255
4256         return FALSE;
4257 }
4258
4259 static gint
4260 ev_view_focus_out (GtkWidget     *widget,
4261                      GdkEventFocus *event)
4262 {
4263         if (EV_VIEW (widget)->goto_window)
4264                 ev_view_goto_window_hide (EV_VIEW (widget));
4265
4266         if (EV_VIEW (widget)->pixbuf_cache)
4267                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4268         gtk_widget_queue_draw (widget);
4269
4270         return FALSE;
4271 }
4272
4273 static gboolean
4274 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4275 {
4276         EvView *view = EV_VIEW (widget);
4277
4278         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
4279                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
4280
4281         return FALSE;
4282 }
4283
4284 static gboolean
4285 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
4286 {
4287         EvView *view = EV_VIEW (widget);
4288
4289         ev_view_handle_cursor_over_xy (view, event->x, event->y);
4290
4291         return FALSE;
4292 }
4293
4294 static void
4295 ev_view_style_set (GtkWidget *widget,
4296                    GtkStyle  *old_style)
4297 {
4298         if (EV_VIEW (widget)->pixbuf_cache)
4299                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
4300
4301         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
4302 }
4303
4304 /*** Drawing ***/
4305
4306 static guint32
4307 ev_gdk_color_to_rgb (const GdkColor *color)
4308 {
4309   guint32 result;
4310   result = (0xff0000 | (color->red & 0xff00));
4311   result <<= 8;
4312   result |= ((color->green & 0xff00) | (color->blue >> 8));
4313   return result;
4314 }
4315
4316 static void
4317 draw_rubberband (GtkWidget *widget, GdkWindow *window,
4318                  const GdkRectangle *rect, guchar alpha)
4319 {
4320         GdkGC *gc;
4321         GdkPixbuf *pixbuf;
4322         GdkColor *fill_color_gdk;
4323         guint fill_color;
4324
4325         fill_color_gdk = gdk_color_copy (&GTK_WIDGET (widget)->style->base[GTK_STATE_SELECTED]);
4326         fill_color = ev_gdk_color_to_rgb (fill_color_gdk) << 8 | alpha;
4327
4328         pixbuf = gdk_pixbuf_new (GDK_COLORSPACE_RGB, TRUE, 8,
4329                                  rect->width, rect->height);
4330         gdk_pixbuf_fill (pixbuf, fill_color);
4331
4332         gdk_draw_pixbuf (window, NULL, pixbuf,
4333                          0, 0,
4334                          rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4335                          rect->width, rect->height,
4336                          GDK_RGB_DITHER_NONE,
4337                          0, 0);
4338
4339         g_object_unref (pixbuf);
4340
4341         gc = gdk_gc_new (window);
4342         gdk_gc_set_rgb_fg_color (gc, fill_color_gdk);
4343         gdk_draw_rectangle (window, gc, FALSE,
4344                             rect->x - EV_VIEW (widget)->scroll_x, rect->y - EV_VIEW (widget)->scroll_y,
4345                             rect->width - 1,
4346                             rect->height - 1);
4347         g_object_unref (gc);
4348
4349         gdk_color_free (fill_color_gdk);
4350 }
4351
4352
4353 static void
4354 highlight_find_results (EvView *view, int page)
4355 {
4356         gint i, n_results = 0;
4357
4358         n_results = ev_view_find_get_n_results (view, page);
4359
4360         for (i = 0; i < n_results; i++) {
4361                 EvRectangle *rectangle;
4362                 GdkRectangle view_rectangle;
4363                 guchar alpha;
4364
4365                 if (i == view->find_result && page == view->current_page) {
4366                         alpha = 0x90;
4367                 } else {
4368                         alpha = 0x20;
4369                 }
4370
4371                 rectangle = ev_view_find_get_result (view, page, i);
4372                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4373                 draw_rubberband (GTK_WIDGET (view), view->layout.bin_window,
4374                                  &view_rectangle, alpha);
4375         }
4376 }
4377
4378 static void
4379 draw_loading_text (EvView       *view,
4380                    GdkRectangle *page_area,
4381                    GdkRectangle *expose_area)
4382 {
4383         cairo_t *cr;
4384         gint     width, height;
4385
4386         if (!view->loading_text) {
4387                 const gchar *loading_text = _("Loading...");
4388                 PangoLayout *layout;
4389                 PangoFontDescription *font_desc;
4390                 PangoRectangle logical_rect;
4391                 gint target_width;
4392                 gdouble real_scale;
4393
4394                 ev_document_fc_mutex_lock ();
4395
4396                 layout = gtk_widget_create_pango_layout (GTK_WIDGET (view), loading_text);
4397
4398                 font_desc = pango_font_description_new ();
4399
4400                 /* We set the font to be 10 points, get the size, and scale appropriately */
4401                 pango_font_description_set_size (font_desc, 10 * PANGO_SCALE);
4402                 pango_layout_set_font_description (layout, font_desc);
4403                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4404
4405                 target_width = MAX (page_area->width / 2, 1);
4406                 real_scale = ((double)target_width / (double) logical_rect.width) * (PANGO_SCALE * 10);
4407                 pango_font_description_set_size (font_desc, (int)real_scale);
4408                 pango_layout_set_font_description (layout, font_desc);
4409                 pango_layout_get_pixel_extents (layout, NULL, &logical_rect);
4410
4411                 view->loading_text = cairo_image_surface_create (CAIRO_FORMAT_ARGB32,
4412                                                                  logical_rect.width,
4413                                                                  logical_rect.height);
4414                 cr = cairo_create (view->loading_text);
4415                 cairo_set_source_rgb (cr,
4416                                       155 / (double)255,
4417                                       155 / (double)255,
4418                                       155 / (double)255);
4419                 pango_cairo_show_layout (cr, layout);
4420                 cairo_destroy (cr);
4421
4422                 pango_font_description_free (font_desc);
4423                 g_object_unref (layout);
4424
4425                 ev_document_fc_mutex_unlock ();
4426         }
4427
4428         width = (page_area->width - cairo_image_surface_get_width (view->loading_text)) / 2;
4429         height = (page_area->height - cairo_image_surface_get_height (view->loading_text)) / 2;
4430
4431         cr = gdk_cairo_create (view->layout.bin_window);
4432         cairo_translate (cr,
4433                          page_area->x + width,
4434                          page_area->y + height);
4435         cairo_set_source_surface (cr, view->loading_text, 0, 0);
4436         cairo_paint (cr);
4437         cairo_destroy (cr);
4438 }
4439
4440 static void
4441 draw_one_page (EvView       *view,
4442                gint          page,
4443                cairo_t      *cr,
4444                GdkRectangle *page_area,
4445                GtkBorder    *border,
4446                GdkRectangle *expose_area,
4447                gboolean     *page_ready)
4448 {
4449         GdkRectangle overlap;
4450         GdkRectangle real_page_area;
4451
4452         g_assert (view->document);
4453
4454         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4455                 return;
4456
4457         /* Render the document itself */
4458         real_page_area = *page_area;
4459
4460         real_page_area.x += border->left;
4461         real_page_area.y += border->top;
4462         real_page_area.width -= (border->left + border->right);
4463         real_page_area.height -= (border->top + border->bottom);
4464         *page_ready = TRUE;
4465
4466         if (!view->presentation) {
4467                 gint current_page;
4468
4469                 current_page = ev_document_model_get_page (view->model);
4470                 ev_document_misc_paint_one_page (view->layout.bin_window,
4471                                                  GTK_WIDGET (view),
4472                                                  page_area, border,
4473                                                  page == current_page);
4474         }
4475
4476         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4477                 gint             width, height;
4478                 gint             page_width, page_height;
4479                 cairo_surface_t *page_surface = NULL;
4480                 gint             selection_width, selection_height;
4481                 cairo_surface_t *selection_surface = NULL;
4482
4483                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4484
4485                 if (!page_surface) {
4486                         if (!view->presentation) {
4487                                 draw_loading_text (view,
4488                                                    &real_page_area,
4489                                                    expose_area);
4490                         }
4491
4492                         *page_ready = FALSE;
4493
4494                         return;
4495                 }
4496
4497                 ev_view_get_page_size (view, page, &width, &height);
4498
4499                 page_width = cairo_image_surface_get_width (page_surface);
4500                 page_height = cairo_image_surface_get_height (page_surface);
4501
4502                 cairo_save (cr);
4503                 cairo_translate (cr, overlap.x, overlap.y);
4504
4505                 if (width != page_width || height != page_height) {
4506                         cairo_pattern_set_filter (cairo_get_source (cr),
4507                                                   CAIRO_FILTER_FAST);
4508                         cairo_scale (cr,
4509                                      (gdouble)width / page_width,
4510                                      (gdouble)height / page_height);
4511                 }
4512
4513                 cairo_surface_set_device_offset (page_surface,
4514                                                  overlap.x - real_page_area.x,
4515                                                  overlap.y - real_page_area.y);
4516                 cairo_set_source_surface (cr, page_surface, 0, 0);
4517                 cairo_paint (cr);
4518                 cairo_restore (cr);
4519
4520                 /* Get the selection pixbuf iff we have something to draw */
4521                 if (find_selection_for_page (view, page) &&
4522                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4523                         selection_surface =
4524                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4525                                                                        page,
4526                                                                        view->scale,
4527                                                                        NULL);
4528                 }
4529
4530                 if (!selection_surface) {
4531                         return;
4532                 }
4533
4534                 selection_width = cairo_image_surface_get_width (selection_surface);
4535                 selection_height = cairo_image_surface_get_height (selection_surface);
4536
4537                 cairo_save (cr);
4538                 cairo_translate (cr, overlap.x, overlap.y);
4539
4540                 if (width != selection_width || height != selection_height) {
4541                         cairo_pattern_set_filter (cairo_get_source (cr),
4542                                                   CAIRO_FILTER_FAST);
4543                         cairo_scale (cr,
4544                                      (gdouble)width / selection_width,
4545                                      (gdouble)height / selection_height);
4546                 }
4547
4548                 cairo_surface_set_device_offset (selection_surface,
4549                                                  overlap.x - real_page_area.x,
4550                                                  overlap.y - real_page_area.y);
4551                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4552                 cairo_paint (cr);
4553                 cairo_restore (cr);
4554         }
4555 }
4556
4557 /*** GObject functions ***/
4558
4559 static void
4560 ev_view_finalize (GObject *object)
4561 {
4562         EvView *view = EV_VIEW (object);
4563
4564         clear_selection (view);
4565         clear_link_selected (view);
4566
4567         if (view->image_dnd_info.image)
4568                 g_object_unref (view->image_dnd_info.image);
4569         view->image_dnd_info.image = NULL;
4570
4571         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4572 }
4573
4574 static void
4575 ev_view_destroy (GtkObject *object)
4576 {
4577         EvView *view = EV_VIEW (object);
4578
4579         if (view->model) {
4580                 g_object_unref (view->model);
4581                 view->model = NULL;
4582         }
4583
4584         if (view->pixbuf_cache) {
4585                 g_object_unref (view->pixbuf_cache);
4586                 view->pixbuf_cache = NULL;
4587         }
4588
4589         if (view->document) {
4590                 g_object_unref (view->document);
4591                 view->document = NULL;
4592         }
4593
4594         if (view->page_cache) {
4595                 g_object_unref (view->page_cache);
4596                 view->page_cache = NULL;
4597         }
4598
4599         if (view->goto_window) {
4600                 gtk_widget_destroy (view->goto_window);
4601                 view->goto_window = NULL;
4602                 view->goto_entry = NULL;
4603         }
4604
4605         ev_view_window_children_free (view);
4606
4607         if (view->selection_scroll_id) {
4608             g_source_remove (view->selection_scroll_id);
4609             view->selection_scroll_id = 0;
4610         }
4611
4612         if (view->selection_update_id) {
4613             g_source_remove (view->selection_update_id);
4614             view->selection_update_id = 0;
4615         }
4616
4617         if (view->loading_text) {
4618                 cairo_surface_destroy (view->loading_text);
4619                 view->loading_text = NULL;
4620         }
4621
4622         if (view->scroll_info.timeout_id) {
4623             g_source_remove (view->scroll_info.timeout_id);
4624             view->scroll_info.timeout_id = 0;
4625         }
4626
4627         if (view->drag_info.drag_timeout_id) {
4628                 g_source_remove (view->drag_info.drag_timeout_id);
4629                 view->drag_info.drag_timeout_id = 0;
4630         }
4631
4632         if (view->drag_info.release_timeout_id) {
4633                 g_source_remove (view->drag_info.release_timeout_id);
4634                 view->drag_info.release_timeout_id = 0;
4635         }
4636
4637         ev_view_presentation_transition_stop (view);
4638
4639         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4640
4641         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4642 }
4643
4644 static void
4645 ev_view_set_property (GObject      *object,
4646                       guint         prop_id,
4647                       const GValue *value,
4648                       GParamSpec   *pspec)
4649 {
4650         EvView *view = EV_VIEW (object);
4651
4652         switch (prop_id) {
4653                 case PROP_PRESENTATION:
4654                         ev_view_set_presentation (view, g_value_get_boolean (value));
4655                         break;
4656                 default:
4657                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4658         }
4659 }
4660
4661 static AtkObject *
4662 ev_view_get_accessible (GtkWidget *widget)
4663 {
4664         static gboolean first_time = TRUE;
4665
4666         if (first_time) {
4667                 AtkObjectFactory *factory;
4668                 AtkRegistry *registry;
4669                 GType derived_type;
4670                 GType derived_atk_type;
4671
4672                 /*
4673                  * Figure out whether accessibility is enabled by looking at the
4674                  * type of the accessible object which would be created for
4675                  * the parent type of EvView.
4676                  */
4677                 derived_type = g_type_parent (EV_TYPE_VIEW);
4678
4679                 registry = atk_get_default_registry ();
4680                 factory = atk_registry_get_factory (registry,
4681                                                     derived_type);
4682                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4683                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4684                         atk_registry_set_factory_type (registry,
4685                                                        EV_TYPE_VIEW,
4686                                                        ev_view_accessible_factory_get_type ());
4687                 first_time = FALSE;
4688         }
4689         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4690 }
4691
4692 static void
4693 ev_view_get_property (GObject *object,
4694                       guint prop_id,
4695                       GValue *value,
4696                       GParamSpec *pspec)
4697 {
4698         EvView *view = EV_VIEW (object);
4699
4700         switch (prop_id) {
4701                 case PROP_PRESENTATION:
4702                         g_value_set_boolean (value, view->presentation);
4703                         break;
4704                 case PROP_HAS_SELECTION:
4705                         g_value_set_boolean (value,
4706                                              view->selection_info.selections != NULL);
4707                         break;
4708                 default:
4709                         G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
4710         }
4711 }
4712
4713 static void
4714 ev_view_class_init (EvViewClass *class)
4715 {
4716         GObjectClass *object_class = G_OBJECT_CLASS (class);
4717         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4718         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4719         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4720         GtkBindingSet *binding_set;
4721
4722         object_class->finalize = ev_view_finalize;
4723         object_class->set_property = ev_view_set_property;
4724         object_class->get_property = ev_view_get_property;
4725
4726         widget_class->expose_event = ev_view_expose_event;
4727         widget_class->button_press_event = ev_view_button_press_event;
4728         widget_class->motion_notify_event = ev_view_motion_notify_event;
4729         widget_class->button_release_event = ev_view_button_release_event;
4730         widget_class->key_press_event = ev_view_key_press_event;
4731         widget_class->focus_in_event = ev_view_focus_in;
4732         widget_class->focus_out_event = ev_view_focus_out;
4733         widget_class->get_accessible = ev_view_get_accessible;
4734         widget_class->size_request = ev_view_size_request;
4735         widget_class->size_allocate = ev_view_size_allocate;
4736         widget_class->realize = ev_view_realize;
4737         widget_class->scroll_event = ev_view_scroll_event;
4738         widget_class->enter_notify_event = ev_view_enter_notify_event;
4739         widget_class->leave_notify_event = ev_view_leave_notify_event;
4740         widget_class->style_set = ev_view_style_set;
4741         widget_class->drag_data_get = ev_view_drag_data_get;
4742         widget_class->drag_motion = ev_view_drag_motion;
4743         widget_class->popup_menu = ev_view_popup_menu;
4744         widget_class->query_tooltip = ev_view_query_tooltip;
4745
4746         gtk_object_class->destroy = ev_view_destroy;
4747
4748         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4749
4750         class->binding_activated = ev_view_scroll;
4751
4752         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4753                          G_TYPE_FROM_CLASS (object_class),
4754                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4755                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4756                          NULL, NULL,
4757                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4758                          G_TYPE_NONE, 2,
4759                          GTK_TYPE_SCROLL_TYPE,
4760                          G_TYPE_BOOLEAN);
4761         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4762                          G_TYPE_FROM_CLASS (object_class),
4763                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4764                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4765                          NULL, NULL,
4766                          g_cclosure_marshal_VOID__OBJECT,
4767                          G_TYPE_NONE, 1,
4768                          G_TYPE_OBJECT);
4769         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4770                          G_TYPE_FROM_CLASS (object_class),
4771                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4772                          G_STRUCT_OFFSET (EvViewClass, external_link),
4773                          NULL, NULL,
4774                          g_cclosure_marshal_VOID__OBJECT,
4775                          G_TYPE_NONE, 1,
4776                          G_TYPE_OBJECT);
4777         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4778                          G_TYPE_FROM_CLASS (object_class),
4779                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4780                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4781                          NULL, NULL,
4782                          g_cclosure_marshal_VOID__OBJECT,
4783                          G_TYPE_NONE, 1,
4784                          G_TYPE_OBJECT);
4785
4786
4787         g_object_class_install_property (object_class,
4788                                          PROP_PRESENTATION,
4789                                          g_param_spec_boolean ("presentation",
4790                                                                "Presentation",
4791                                                                "Draw page in presentation mode",
4792                                                                TRUE,
4793                                                                G_PARAM_READWRITE));
4794         g_object_class_install_property (object_class,
4795                                          PROP_HAS_SELECTION,
4796                                          g_param_spec_boolean ("has-selection",
4797                                                                "Has selection",
4798                                                                "The view has selections",
4799                                                                FALSE,
4800                                                                G_PARAM_READABLE));
4801
4802         binding_set = gtk_binding_set_by_class (class);
4803
4804         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4805         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4806         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4807         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4808         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4809         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4810         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4811         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4812         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4813                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4814         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4815                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4816         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4817                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4818         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4819                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4820
4821 }
4822
4823 static void
4824 ev_view_init (EvView *view)
4825 {
4826         GTK_WIDGET_SET_FLAGS (view, GTK_CAN_FOCUS);
4827
4828         view->start_page = -1;
4829         view->end_page = -1;
4830         view->spacing = 5;
4831         view->scale = 1.0;
4832         view->current_page = 0;
4833         view->pressed_button = -1;
4834         view->cursor = EV_VIEW_CURSOR_NORMAL;
4835         view->drag_info.in_drag = FALSE;
4836         view->scroll_info.autoscrolling = FALSE;
4837         view->selection_info.selections = NULL;
4838         view->selection_info.in_selection = FALSE;
4839         view->selection_info.in_drag = FALSE;
4840         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4841         view->continuous = TRUE;
4842         view->dual_page = FALSE;
4843         view->presentation = FALSE;
4844         view->presentation_state = EV_PRESENTATION_NORMAL;
4845         view->fullscreen = FALSE;
4846         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4847         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4848         view->jump_to_find_result = TRUE;
4849         view->highlight_find_results = FALSE;
4850
4851         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4852         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4853 }
4854
4855 /*** Callbacks ***/
4856
4857 static void
4858 ev_view_change_page (EvView *view,
4859                      gint    new_page,
4860                      gboolean start_transition)
4861 {
4862         gint x, y;
4863
4864         view->current_page = new_page;
4865         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4866
4867         if (view->presentation && start_transition)
4868                 ev_view_presentation_transition_start (view);
4869
4870         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4871         ev_view_handle_cursor_over_xy (view, x, y);
4872
4873         gtk_widget_queue_resize (GTK_WIDGET (view));
4874 }
4875
4876 static void
4877 ev_view_transition_animation_finish (EvTransitionAnimation *animation,
4878                                      EvView                *view)
4879 {
4880         g_object_unref (view->animation);
4881         view->animation = NULL;
4882         ev_view_change_page (view, view->current_page, TRUE);
4883 }
4884
4885 /**
4886  * ev_view_transition_animation_cancel:
4887  * @animation: Animation to finish
4888  * @view: An EvView
4889  *
4890  * Does almost the same as cancel, but without scheduling the transition.
4891  */
4892
4893 static void
4894 ev_view_transition_animation_cancel (EvTransitionAnimation *animation,
4895                                      EvView                *view)
4896 {
4897         g_object_unref (view->animation);
4898         view->animation = NULL;
4899         ev_view_change_page (view, view->current_page, FALSE);
4900 }
4901
4902 static void
4903 ev_view_transition_animation_frame (EvTransitionAnimation *animation,
4904                                     gdouble                progress,
4905                                     EvView                *view)
4906 {
4907         gtk_widget_queue_draw (GTK_WIDGET (view));
4908 }
4909
4910 static void
4911 ev_view_presentation_animation_start (EvView *view,
4912                                       int     new_page)
4913 {
4914         EvTransitionEffect *effect = NULL;
4915         cairo_surface_t *surface;
4916
4917         if (EV_IS_DOCUMENT_TRANSITION (view->document))
4918                 effect = ev_document_transition_get_effect (EV_DOCUMENT_TRANSITION (view->document),
4919                                                             view->current_page);
4920         if (!effect)
4921                 return;
4922
4923         view->animation = ev_transition_animation_new (effect);
4924
4925         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page);
4926         ev_transition_animation_set_origin_surface (view->animation, surface);
4927         surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, new_page);
4928         if (surface)
4929                 ev_transition_animation_set_dest_surface (view->animation, surface);
4930
4931         g_signal_connect (view->animation, "frame",
4932                           G_CALLBACK (ev_view_transition_animation_frame), view);
4933         g_signal_connect (view->animation, "finished",
4934                           G_CALLBACK (ev_view_transition_animation_finish), view);
4935 }
4936
4937 static void
4938 job_finished_cb (EvPixbufCache *pixbuf_cache,
4939                  GdkRegion     *region,
4940                  EvView        *view)
4941 {
4942         if (view->animation) {
4943                 cairo_surface_t *surface;
4944
4945                 surface = ev_pixbuf_cache_get_surface (pixbuf_cache, view->current_page);
4946                 ev_transition_animation_set_dest_surface (view->animation, surface);
4947         }
4948
4949         if (region) {
4950                 gdk_window_invalidate_region (view->layout.bin_window,
4951                                               region, TRUE);
4952         } else {
4953                 gtk_widget_queue_draw (GTK_WIDGET (view));
4954         }
4955 }
4956
4957 static void
4958 ev_view_page_changed_cb (EvDocumentModel *model,
4959                          gint             old_page,
4960                          gint             new_page,
4961                          EvView          *view)
4962 {
4963         if (!view->document)
4964                 return;
4965
4966         if (view->current_page != new_page) {
4967                 if (view->presentation)
4968                         ev_view_presentation_animation_start (view, new_page);
4969
4970                 ev_view_change_page (view, new_page, TRUE);
4971         } else {
4972                 gtk_widget_queue_draw (GTK_WIDGET (view));
4973         }
4974
4975         view->find_result = 0;
4976 }
4977
4978 static void
4979 on_adjustment_value_changed (GtkAdjustment *adjustment,
4980                              EvView        *view)
4981 {
4982         int dx = 0, dy = 0;
4983         gint x, y;
4984         GList *children, *l;
4985
4986         if (! GTK_WIDGET_REALIZED (view))
4987                 return;
4988
4989         if (view->hadjustment) {
4990                 dx = view->scroll_x - (int) view->hadjustment->value;
4991                 view->scroll_x = (int) view->hadjustment->value;
4992         } else {
4993                 view->scroll_x = 0;
4994         }
4995
4996         if (view->vadjustment) {
4997                 dy = view->scroll_y - (int) view->vadjustment->value;
4998                 view->scroll_y = (int) view->vadjustment->value;
4999         } else {
5000                 view->scroll_y = 0;
5001         }
5002
5003         children = gtk_container_get_children (GTK_CONTAINER (view));
5004         for (l = children; l && l->data; l = g_list_next (l)) {
5005                 gint       child_x, child_y;
5006                 GtkWidget *child = (GtkWidget *)l->data;
5007
5008                 gtk_container_child_get (GTK_CONTAINER (view),
5009                                          child,
5010                                          "x", &child_x,
5011                                          "y", &child_y,
5012                                          NULL);
5013                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
5014         }
5015         g_list_free (children);
5016
5017         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
5018                 EvViewWindowChild *child;
5019
5020                 child = (EvViewWindowChild *)l->data;
5021
5022                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
5023         }
5024
5025         if (view->pending_resize)
5026                 gtk_widget_queue_draw (GTK_WIDGET (view));
5027         else
5028                 gdk_window_scroll (view->layout.bin_window, dx, dy);
5029
5030         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5031         ev_view_handle_cursor_over_xy (view, x, y);
5032
5033         if (view->document)
5034                 view_update_range_and_current_page (view);
5035 }
5036
5037 GtkWidget*
5038 ev_view_new (void)
5039 {
5040         GtkWidget *view;
5041
5042         view = g_object_new (EV_TYPE_VIEW, NULL);
5043
5044         return view;
5045 }
5046
5047 static void
5048 setup_caches (EvView *view)
5049 {
5050         gboolean inverted_colors;
5051
5052         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
5053         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->document);
5054         view->page_cache = ev_page_cache_new (view->document);
5055         inverted_colors = ev_document_model_get_inverted_colors (view->model);
5056         ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
5057         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
5058 }
5059
5060 static void
5061 clear_caches (EvView *view)
5062 {
5063         if (view->pixbuf_cache) {
5064                 g_object_unref (view->pixbuf_cache);
5065                 view->pixbuf_cache = NULL;
5066         }
5067
5068         if (view->page_cache) {
5069                 g_object_unref (view->page_cache);
5070                 view->page_cache = NULL;
5071         }
5072 }
5073
5074 void
5075 ev_view_set_loading (EvView       *view,
5076                      gboolean      loading)
5077 {
5078         view->loading = loading;
5079         gtk_widget_queue_draw (GTK_WIDGET (view));
5080 }
5081
5082 static gboolean
5083 ev_view_autoscroll_cb (EvView *view)
5084 {
5085         gdouble speed, value;
5086
5087         /* If the user stops autoscrolling, autoscrolling will be
5088          * set to false but the timeout will continue; stop the timeout: */
5089         if (!view->scroll_info.autoscrolling) {
5090                 view->scroll_info.timeout_id = 0;
5091                 return FALSE;
5092         }
5093
5094         if (view->scroll_info.last_y > view->scroll_info.start_y &&
5095                 (view->scroll_info.last_y < view->scroll_info.start_y))
5096                 return TRUE;
5097
5098         /* Replace 100 with your speed of choice: The lower the faster.
5099          * Replace 3 with another speed of choice: The higher, the faster it accelerated
5100          *      based on the distance of the starting point from the mouse
5101          * (All also effected by the timeout interval of this callback) */
5102
5103         if (view->scroll_info.start_y > view->scroll_info.last_y)
5104                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
5105         else
5106                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
5107
5108         value = gtk_adjustment_get_value (view->vadjustment);
5109         value = CLAMP (value + speed, 0, view->vadjustment->upper - view->vadjustment->page_size);
5110         gtk_adjustment_set_value (view->vadjustment, value);
5111
5112         return TRUE;
5113
5114 }
5115
5116 void
5117 ev_view_autoscroll_start (EvView *view)
5118 {
5119         gint x, y;
5120
5121         g_return_if_fail (EV_IS_VIEW (view));
5122
5123         if (view->scroll_info.autoscrolling)
5124                 return;
5125
5126         view->scroll_info.autoscrolling = TRUE;
5127         view->scroll_info.timeout_id =
5128                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
5129                                view);
5130
5131         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5132         ev_view_handle_cursor_over_xy (view, x, y);
5133 }
5134
5135 void
5136 ev_view_autoscroll_stop (EvView *view)
5137 {
5138         gint x, y;
5139
5140         g_return_if_fail (EV_IS_VIEW (view));
5141
5142         if (!view->scroll_info.autoscrolling)
5143                 return;
5144
5145         view->scroll_info.autoscrolling = FALSE;
5146         if (view->scroll_info.timeout_id) {
5147                 g_source_remove (view->scroll_info.timeout_id);
5148                 view->scroll_info.timeout_id = 0;
5149         }
5150
5151         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
5152         ev_view_handle_cursor_over_xy (view, x, y);
5153 }
5154
5155 static void
5156 ev_view_document_changed_cb (EvDocumentModel *model,
5157                              GParamSpec      *pspec,
5158                              EvView          *view)
5159 {
5160         EvDocument *document = ev_document_model_get_document (model);
5161
5162         view->loading = FALSE;
5163
5164         if (document != view->document) {
5165                 gint current_page;
5166
5167                 clear_caches (view);
5168
5169                 if (view->document) {
5170                         g_object_unref (view->document);
5171                 }
5172
5173                 view->document = document;
5174                 view->find_result = 0;
5175
5176                 if (view->document) {
5177                         g_object_ref (view->document);
5178                         setup_caches (view);
5179                 }
5180
5181                 current_page = ev_document_model_get_page (model);
5182                 if (view->current_page != current_page) {
5183                         ev_view_change_page (view, current_page, TRUE);
5184                 } else {
5185                         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
5186                         gtk_widget_queue_resize (GTK_WIDGET (view));
5187                 }
5188         }
5189 }
5190
5191 static void
5192 ev_view_rotation_changed_cb (EvDocumentModel *model,
5193                              GParamSpec      *pspec,
5194                              EvView          *view)
5195 {
5196         gint rotation = ev_document_model_get_rotation (model);
5197
5198         view->rotation = rotation;
5199
5200         if (view->pixbuf_cache) {
5201                 ev_pixbuf_cache_clear (view->pixbuf_cache);
5202                 if (!ev_document_is_page_size_uniform (view->document))
5203                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5204                 gtk_widget_queue_resize (GTK_WIDGET (view));
5205         }
5206
5207         ev_view_remove_all (view);
5208
5209         if (rotation != 0)
5210                 clear_selection (view);
5211 }
5212
5213 static void
5214 ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
5215                                     GParamSpec      *pspec,
5216                                     EvView          *view)
5217 {
5218         if (view->pixbuf_cache) {
5219                 gboolean inverted_colors;
5220
5221                 inverted_colors = ev_document_model_get_inverted_colors (model);
5222                 ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
5223                 gtk_widget_queue_draw (GTK_WIDGET (view));
5224         }
5225 }
5226
5227 static void
5228 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
5229                                 GParamSpec      *pspec,
5230                                 EvView          *view)
5231 {
5232         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
5233
5234         view->sizing_mode = mode;
5235         if (mode != EV_SIZING_FREE)
5236                 gtk_widget_queue_resize (GTK_WIDGET (view));
5237 }
5238
5239 #define EPSILON 0.0000001
5240 static void
5241 ev_view_scale_changed_cb (EvDocumentModel *model,
5242                           GParamSpec      *pspec,
5243                           EvView          *view)
5244 {
5245         gdouble scale = ev_document_model_get_scale (model);
5246
5247         if (ABS (view->scale - scale) < EPSILON)
5248                 return;
5249
5250         if (view->loading_text) {
5251                 cairo_surface_destroy (view->loading_text);
5252                 view->loading_text = NULL;
5253         }
5254
5255         view->scale = scale;
5256
5257         view->pending_resize = TRUE;
5258         if (view->sizing_mode == EV_SIZING_FREE)
5259                 gtk_widget_queue_resize (GTK_WIDGET (view));
5260 }
5261
5262 static void
5263 ev_view_continuous_changed_cb (EvDocumentModel *model,
5264                                GParamSpec      *pspec,
5265                                EvView          *view)
5266 {
5267         gboolean continuous = ev_document_model_get_continuous (model);
5268
5269         view->continuous = continuous;
5270         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5271         gtk_widget_queue_resize (GTK_WIDGET (view));
5272 }
5273
5274 static void
5275 ev_view_dual_page_changed_cb (EvDocumentModel *model,
5276                               GParamSpec      *pspec,
5277                               EvView          *view)
5278 {
5279         gboolean dual_page = ev_document_model_get_dual_page (model);
5280
5281         view->dual_page = dual_page;
5282         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5283         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
5284          * preload_cache_size to be 2 if dual_page is set.
5285          */
5286         gtk_widget_queue_resize (GTK_WIDGET (view));
5287 }
5288
5289 static void
5290 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
5291                                GParamSpec      *pspec,
5292                                EvView          *view)
5293 {
5294         gboolean fullscreen = ev_document_model_get_fullscreen (model);
5295
5296         view->fullscreen = fullscreen;
5297         gtk_widget_queue_resize (GTK_WIDGET (view));
5298 }
5299
5300 void
5301 ev_view_set_model (EvView          *view,
5302                    EvDocumentModel *model)
5303 {
5304         g_return_if_fail (EV_IS_VIEW (view));
5305         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
5306
5307         if (model == view->model)
5308                 return;
5309
5310         if (view->model) {
5311                 g_signal_handlers_disconnect_by_func (view->model,
5312                                                       ev_view_document_changed_cb,
5313                                                       view);
5314                 g_signal_handlers_disconnect_by_func (view->model,
5315                                                       ev_view_page_changed_cb,
5316                                                       view);
5317                 g_object_unref (view->model);
5318         }
5319         view->model = g_object_ref (model);
5320
5321         /* Initialize view from model */
5322         view->rotation = ev_document_model_get_rotation (view->model);
5323         view->sizing_mode = ev_document_model_get_sizing_mode (view->model);
5324         view->scale = ev_document_model_get_scale (view->model);
5325         view->continuous = ev_document_model_get_continuous (view->model);
5326         view->dual_page = ev_document_model_get_dual_page (view->model);
5327         view->fullscreen = ev_document_model_get_fullscreen (view->model);
5328         ev_view_document_changed_cb (view->model, NULL, view);
5329
5330         g_signal_connect (view->model, "notify::document",
5331                           G_CALLBACK (ev_view_document_changed_cb),
5332                           view);
5333         g_signal_connect (view->model, "notify::rotation",
5334                           G_CALLBACK (ev_view_rotation_changed_cb),
5335                           view);
5336         g_signal_connect (view->model, "notify::inverted-colors",
5337                           G_CALLBACK (ev_view_inverted_colors_changed_cb),
5338                           view);
5339         g_signal_connect (view->model, "notify::sizing-mode",
5340                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
5341                           view);
5342         g_signal_connect (view->model, "notify::scale",
5343                           G_CALLBACK (ev_view_scale_changed_cb),
5344                           view);
5345         g_signal_connect (view->model, "notify::continuous",
5346                           G_CALLBACK (ev_view_continuous_changed_cb),
5347                           view);
5348         g_signal_connect (view->model, "notify::dual-page",
5349                           G_CALLBACK (ev_view_dual_page_changed_cb),
5350                           view);
5351         g_signal_connect (view->model, "notify::fullscreen",
5352                           G_CALLBACK (ev_view_fullscreen_changed_cb),
5353                           view);
5354         g_signal_connect (view->model, "page-changed",
5355                           G_CALLBACK (ev_view_page_changed_cb),
5356                           view);
5357 }
5358
5359 static void
5360 ev_view_reload_page (EvView    *view,
5361                      gint       page,
5362                      GdkRegion *region)
5363 {
5364         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
5365                                      region,
5366                                      page,
5367                                      view->rotation,
5368                                      view->scale);
5369 }
5370
5371 void
5372 ev_view_reload (EvView *view)
5373 {
5374         ev_pixbuf_cache_clear (view->pixbuf_cache);
5375         view_update_range_and_current_page (view);
5376 }
5377
5378 void
5379 ev_view_set_presentation (EvView   *view,
5380                           gboolean  presentation)
5381 {
5382         g_return_if_fail (EV_IS_VIEW (view));
5383
5384         presentation = presentation != FALSE;
5385
5386         if (view->presentation == presentation)
5387                 return;
5388
5389         if (!presentation)
5390                 view->presentation_state = EV_PRESENTATION_NORMAL;
5391
5392         view->presentation = presentation;
5393         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
5394
5395         if (presentation) {
5396                 clear_selection (view);
5397                 /* FIXME: save selections */
5398                 view->sizing_mode_saved = view->sizing_mode;
5399                 view->scale_saved = view->scale;
5400                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
5401         } else {
5402                 ev_document_model_set_sizing_mode (view->model, view->sizing_mode_saved);
5403                 ev_document_model_set_scale (view->model, view->scale_saved);
5404         }
5405
5406         gtk_widget_queue_resize (GTK_WIDGET (view));
5407
5408         if (presentation)
5409                 ev_view_presentation_transition_start (view);
5410         else {
5411                 ev_view_presentation_transition_stop (view);
5412
5413                 if (view->animation) {
5414                         /* stop any running animation */
5415                         ev_view_transition_animation_cancel (view->animation, view);
5416                 }
5417         }
5418
5419         if (GTK_WIDGET_REALIZED (view)) {
5420                 if (view->presentation)
5421                         gdk_window_set_background (view->layout.bin_window,
5422                                                    &GTK_WIDGET (view)->style->black);
5423                 else
5424                         gdk_window_set_background (view->layout.bin_window,
5425                                                    &GTK_WIDGET (view)->style->mid [GTK_STATE_NORMAL]);
5426         }
5427
5428         g_object_notify (G_OBJECT (view), "presentation");
5429 }
5430
5431 gboolean
5432 ev_view_get_presentation (EvView *view)
5433 {
5434         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5435
5436         return view->presentation;
5437 }
5438
5439 static gboolean
5440 transition_next_page (EvView *view)
5441 {
5442         ev_view_next_page (view);
5443
5444         return FALSE;
5445 }
5446
5447 static void
5448 ev_view_presentation_transition_stop (EvView *view)
5449 {
5450         if (view->trans_timeout_id > 0)
5451                 g_source_remove (view->trans_timeout_id);
5452         view->trans_timeout_id = 0;
5453 }
5454
5455 static void
5456 ev_view_presentation_transition_start (EvView *view)
5457 {
5458         gdouble duration;
5459
5460         if (!EV_IS_DOCUMENT_TRANSITION (view->document))
5461                 return;
5462
5463         ev_view_presentation_transition_stop (view);
5464
5465         duration = ev_document_transition_get_page_duration (EV_DOCUMENT_TRANSITION (view->document),
5466                                                              view->current_page);
5467         if (duration > 0) {
5468                 view->trans_timeout_id =
5469                         g_timeout_add_seconds (duration,
5470                                                (GSourceFunc) transition_next_page,
5471                                                view);
5472         }
5473 }
5474
5475 /*** Zoom and sizing mode ***/
5476
5477 gboolean
5478 ev_view_can_zoom_in (EvView *view)
5479 {
5480         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
5481 }
5482
5483 gboolean
5484 ev_view_can_zoom_out (EvView *view)
5485 {
5486         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
5487 }
5488
5489 void
5490 ev_view_zoom_in (EvView *view)
5491 {
5492         gdouble scale;
5493
5494         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5495
5496         if (view->presentation)
5497                 return;
5498
5499         view->pending_scroll = SCROLL_TO_CENTER;
5500         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
5501         ev_document_model_set_scale (view->model, scale);
5502 }
5503
5504 void
5505 ev_view_zoom_out (EvView *view)
5506 {
5507         gdouble scale;
5508
5509         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5510
5511         if (view->presentation)
5512                 return;
5513
5514         view->pending_scroll = SCROLL_TO_CENTER;
5515         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5516         ev_document_model_set_scale (view->model, scale);
5517 }
5518
5519 static double
5520 zoom_for_size_fit_width (gdouble doc_width,
5521                          gdouble doc_height,
5522                          int     target_width,
5523                          int     target_height)
5524 {
5525         return (double)target_width / doc_width;
5526 }
5527
5528 static double
5529 zoom_for_size_fit_height (gdouble doc_width,
5530                           gdouble doc_height,
5531                           int     target_width,
5532                           int     target_height)
5533 {
5534         return (double)target_height / doc_height;
5535 }
5536
5537 static double
5538 zoom_for_size_best_fit (gdouble doc_width,
5539                         gdouble doc_height,
5540                         int     target_width,
5541                         int     target_height)
5542 {
5543         double w_scale;
5544         double h_scale;
5545
5546         w_scale = (double)target_width / doc_width;
5547         h_scale = (double)target_height / doc_height;
5548
5549         return MIN (w_scale, h_scale);
5550 }
5551
5552
5553 static void
5554 ev_view_zoom_for_size_presentation (EvView *view,
5555                                     int     width,
5556                                     int     height)
5557 {
5558         gdouble doc_width, doc_height;
5559         gdouble scale;
5560
5561         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5562         scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5563         ev_document_model_set_scale (view->model, scale);
5564 }
5565
5566 static void
5567 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5568                                                 int     width,
5569                                                 int     height)
5570 {
5571         gdouble doc_width, doc_height;
5572         GtkBorder border;
5573         gdouble scale;
5574
5575         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5576         if (view->rotation == 90 || view->rotation == 270) {
5577                 gdouble tmp;
5578
5579                 tmp = doc_width;
5580                 doc_width = doc_height;
5581                 doc_height = tmp;
5582         }
5583
5584         compute_border (view, doc_width, doc_height, &border);
5585
5586         doc_width *= 2;
5587         width -= (2 * (border.left + border.right) + 3 * 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_continuous (EvView *view,
5605                                   int     width,
5606                                   int     height)
5607 {
5608         gdouble doc_width, doc_height;
5609         GtkBorder border;
5610         gdouble scale;
5611
5612         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5613         if (view->rotation == 90 || view->rotation == 270) {
5614                 gdouble tmp;
5615
5616                 tmp = doc_width;
5617                 doc_width = doc_height;
5618                 doc_height = tmp;
5619         }
5620
5621         compute_border (view, doc_width, doc_height, &border);
5622
5623         width -= (border.left + border.right + 2 * view->spacing);
5624         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5625
5626         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5627                 gint sb_size;
5628
5629                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5630                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5631         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5632                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5633         else
5634                 g_assert_not_reached ();
5635
5636         ev_document_model_set_scale (view->model, scale);
5637 }
5638
5639 static void
5640 ev_view_zoom_for_size_dual_page (EvView *view,
5641                                  int     width,
5642                                  int     height)
5643 {
5644         GtkBorder border;
5645         gdouble doc_width, doc_height;
5646         gdouble scale;
5647         gint other_page;
5648
5649         other_page = view->current_page ^ 1;
5650
5651         /* Find the largest of the two. */
5652         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5653         if (other_page < ev_document_get_n_pages (view->document)) {
5654                 gdouble width_2, height_2;
5655
5656                 get_doc_page_size (view, other_page, &width_2, &height_2);
5657                 if (width_2 > doc_width)
5658                         doc_width = width_2;
5659                 if (height_2 > doc_height)
5660                         doc_height = height_2;
5661         }
5662         compute_border (view, width, height, &border);
5663
5664         doc_width = doc_width * 2;
5665         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5666         height -= (border.top + border.bottom + 2 * view->spacing);
5667
5668         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5669                 gint sb_size;
5670
5671                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5672                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5673         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5674                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5675         else
5676                 g_assert_not_reached ();
5677
5678         ev_document_model_set_scale (view->model, scale);
5679 }
5680
5681 static void
5682 ev_view_zoom_for_size_single_page (EvView *view,
5683                                    int     width,
5684                                    int     height)
5685 {
5686         gdouble doc_width, doc_height;
5687         GtkBorder border;
5688         gdouble scale;
5689
5690         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5691
5692         /* Get an approximate border */
5693         compute_border (view, width, height, &border);
5694
5695         width -= (border.left + border.right + 2 * view->spacing);
5696         height -= (border.top + border.bottom + 2 * view->spacing);
5697
5698         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5699                 gint sb_size;
5700
5701                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5702                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5703         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5704                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5705         else
5706                 g_assert_not_reached ();
5707
5708         ev_document_model_set_scale (view->model, scale);
5709 }
5710
5711 static void
5712 ev_view_zoom_for_size (EvView *view,
5713                        int     width,
5714                        int     height)
5715 {
5716         g_return_if_fail (EV_IS_VIEW (view));
5717         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5718                           view->sizing_mode == EV_SIZING_BEST_FIT);
5719         g_return_if_fail (width >= 0);
5720         g_return_if_fail (height >= 0);
5721
5722         if (view->document == NULL)
5723                 return;
5724
5725         if (view->presentation)
5726                 ev_view_zoom_for_size_presentation (view, width, height);
5727         else if (view->continuous && view->dual_page)
5728                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5729         else if (view->continuous)
5730                 ev_view_zoom_for_size_continuous (view, width, height);
5731         else if (view->dual_page)
5732                 ev_view_zoom_for_size_dual_page (view, width, height);
5733         else
5734                 ev_view_zoom_for_size_single_page (view, width, height);
5735 }
5736
5737 /*** Find ***/
5738 static gint
5739 ev_view_find_get_n_results (EvView *view, gint page)
5740 {
5741         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5742 }
5743
5744 static EvRectangle *
5745 ev_view_find_get_result (EvView *view, gint page, gint result)
5746 {
5747         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5748 }
5749
5750 static void
5751 jump_to_find_result (EvView *view)
5752 {
5753         gint n_results;
5754         gint page = view->current_page;
5755
5756         n_results = ev_view_find_get_n_results (view, page);
5757
5758         if (n_results > 0 && view->find_result < n_results) {
5759                 EvRectangle *rect;
5760                 GdkRectangle view_rect;
5761
5762                 rect = ev_view_find_get_result (view, page, view->find_result);
5763                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5764                 ensure_rectangle_is_visible (view, &view_rect);
5765                 view->jump_to_find_result = FALSE;
5766         }
5767 }
5768
5769 /**
5770  * jump_to_find_page
5771  * @view: #EvView instance
5772  * @direction: Direction to look
5773  * @shift: Shift from current page
5774  *
5775  * Jumps to the first page that has occurences of searched word.
5776  * Uses a direction where to look and a shift from current page.
5777  *
5778  */
5779 static void
5780 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5781 {
5782         int n_pages, i;
5783
5784         n_pages = ev_document_get_n_pages (view->document);
5785
5786         for (i = 0; i < n_pages; i++) {
5787                 int page;
5788
5789                 if (direction == EV_VIEW_FIND_NEXT)
5790                         page = view->current_page + i;
5791                 else
5792                         page = view->current_page - i;
5793                 page += shift;
5794
5795                 if (page >= n_pages) {
5796                         page = page - n_pages;
5797                 } else if (page < 0)
5798                         page = page + n_pages;
5799
5800                 if (ev_view_find_get_n_results (view, page) > 0) {
5801                         ev_document_model_set_page (view->model, page);
5802                         break;
5803                 }
5804         }
5805 }
5806
5807 void
5808 ev_view_find_changed (EvView *view, GList **results, gint page)
5809 {
5810         view->find_pages = results;
5811
5812         if (view->jump_to_find_result == TRUE) {
5813                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5814                 jump_to_find_result (view);
5815         }
5816
5817         if (view->current_page == page)
5818                 gtk_widget_queue_draw (GTK_WIDGET (view));
5819 }
5820
5821 void
5822 ev_view_find_next (EvView *view)
5823 {
5824         gint n_results;
5825
5826         n_results = ev_view_find_get_n_results (view, view->current_page);
5827         view->find_result++;
5828
5829         if (view->find_result >= n_results) {
5830                 view->find_result = 0;
5831                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5832                 jump_to_find_result (view);
5833         } else {
5834                 jump_to_find_result (view);
5835                 gtk_widget_queue_draw (GTK_WIDGET (view));
5836         }
5837 }
5838
5839 void
5840 ev_view_find_previous (EvView *view)
5841 {
5842         view->find_result--;
5843
5844         if (view->find_result < 0) {
5845                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5846                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5847                 jump_to_find_result (view);
5848         } else {
5849                 jump_to_find_result (view);
5850                 gtk_widget_queue_draw (GTK_WIDGET (view));
5851         }
5852 }
5853
5854 void
5855 ev_view_find_search_changed (EvView *view)
5856 {
5857         /* search string has changed, focus on new search result */
5858         view->jump_to_find_result = TRUE;
5859         view->find_pages = NULL;
5860 }
5861
5862 void
5863 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5864 {
5865         view->highlight_find_results = value;
5866         gtk_widget_queue_draw (GTK_WIDGET (view));
5867 }
5868
5869 void
5870 ev_view_find_cancel (EvView *view)
5871 {
5872         view->find_pages = NULL;
5873 }
5874
5875 /*** Selections ***/
5876
5877 /* compute_new_selection_rect/text calculates the area currently selected by
5878  * view_rect.  each handles a different mode;
5879  */
5880 static GList *
5881 compute_new_selection_rect (EvView       *view,
5882                             GdkPoint     *start,
5883                             GdkPoint     *stop)
5884 {
5885         GdkRectangle view_rect;
5886         int n_pages, i;
5887         GList *list = NULL;
5888
5889         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5890
5891         view_rect.x = MIN (start->x, stop->x);
5892         view_rect.y = MIN (start->y, stop->y);
5893         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5894         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5895
5896         n_pages = ev_document_get_n_pages (view->document);
5897
5898         for (i = 0; i < n_pages; i++) {
5899                 GdkRectangle page_area;
5900                 GtkBorder border;
5901
5902                 if (get_page_extents (view, i, &page_area, &border)) {
5903                         GdkRectangle overlap;
5904
5905                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5906                                 EvViewSelection *selection;
5907
5908                                 selection = g_new0 (EvViewSelection, 1);
5909                                 selection->page = i;
5910                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5911                                                        &(selection->rect));
5912
5913                                 list = g_list_append (list, selection);
5914                         }
5915                 }
5916         }
5917
5918         return list;
5919 }
5920
5921 static gboolean
5922 gdk_rectangle_point_in (GdkRectangle *rectangle,
5923                         GdkPoint     *point)
5924 {
5925         return rectangle->x <= point->x &&
5926                 rectangle->y <= point->y &&
5927                 point->x < rectangle->x + rectangle->width &&
5928                 point->y < rectangle->y + rectangle->height;
5929 }
5930
5931 static GList *
5932 compute_new_selection_text (EvView          *view,
5933                             EvSelectionStyle style,
5934                             GdkPoint        *start,
5935                             GdkPoint        *stop)
5936 {
5937         int n_pages, i, first, last;
5938         GList *list = NULL;
5939         EvViewSelection *selection;
5940         gdouble width, height;
5941         int start_page, end_page;
5942
5943         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5944
5945         n_pages = ev_document_get_n_pages (view->document);
5946
5947         /* First figure out the range of pages the selection
5948          * affects. */
5949         first = n_pages;
5950         last = 0;
5951         if (view->continuous) {
5952                 start_page = 0;
5953                 end_page = n_pages;
5954         } else if (view->dual_page) {
5955                 start_page = view->start_page;
5956                 end_page = view->end_page + 1;
5957         } else {
5958                 start_page = view->current_page;
5959                 end_page = view->current_page + 1;
5960         }
5961
5962         for (i = start_page; i < end_page; i++) {
5963                 GdkRectangle page_area;
5964                 GtkBorder border;
5965
5966                 get_page_extents (view, i, &page_area, &border);
5967                 if (gdk_rectangle_point_in (&page_area, start) ||
5968                     gdk_rectangle_point_in (&page_area, stop)) {
5969                         if (first == n_pages)
5970                                 first = i;
5971                         last = i;
5972                 }
5973
5974         }
5975
5976         /* Now create a list of EvViewSelection's for the affected
5977          * pages.  This could be an empty list, a list of just one
5978          * page or a number of pages.*/
5979         for (i = first; i < last + 1; i++) {
5980                 GdkRectangle page_area;
5981                 GtkBorder border;
5982                 GdkPoint *point;
5983
5984                 get_doc_page_size (view, i, &width, &height);
5985
5986                 selection = g_new0 (EvViewSelection, 1);
5987                 selection->page = i;
5988                 selection->style = style;
5989                 selection->rect.x1 = selection->rect.y1 = 0;
5990                 selection->rect.x2 = width;
5991                 selection->rect.y2 = height;
5992
5993                 get_page_extents (view, i, &page_area, &border);
5994
5995                 if (gdk_rectangle_point_in (&page_area, start))
5996                         point = start;
5997                 else
5998                         point = stop;
5999
6000                 if (i == first)
6001                         view_point_to_doc_point (view, point, &page_area,
6002                                                  &selection->rect.x1,
6003                                                  &selection->rect.y1);
6004
6005                 /* If the selection is contained within just one page,
6006                  * make sure we don't write 'start' into both points
6007                  * in selection->rect. */
6008                 if (first == last)
6009                         point = stop;
6010
6011                 if (i == last)
6012                         view_point_to_doc_point (view, point, &page_area,
6013                                                  &selection->rect.x2,
6014                                                  &selection->rect.y2);
6015
6016                 list = g_list_append (list, selection);
6017         }
6018
6019         return list;
6020 }
6021
6022 /* This function takes the newly calculated list, and figures out which regions
6023  * have changed.  It then queues a redraw approporiately.
6024  */
6025 static void
6026 merge_selection_region (EvView *view,
6027                         GList  *new_list)
6028 {
6029         GList *old_list;
6030         GList *new_list_ptr, *old_list_ptr;
6031
6032         /* Update the selection */
6033         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
6034         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6035         g_list_free (view->selection_info.selections);
6036         view->selection_info.selections = new_list;
6037         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
6038         g_object_notify (G_OBJECT (view), "has-selection");
6039
6040         new_list_ptr = new_list;
6041         old_list_ptr = old_list;
6042
6043         while (new_list_ptr || old_list_ptr) {
6044                 EvViewSelection *old_sel, *new_sel;
6045                 int cur_page;
6046                 GdkRegion *region = NULL;
6047
6048                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
6049                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
6050
6051                 /* Assume that the lists are in order, and we run through them
6052                  * comparing them, one page at a time.  We come out with the
6053                  * first page we see. */
6054                 if (new_sel && old_sel) {
6055                         if (new_sel->page < old_sel->page) {
6056                                 new_list_ptr = new_list_ptr->next;
6057                                 old_sel = NULL;
6058                         } else if (new_sel->page > old_sel->page) {
6059                                 old_list_ptr = old_list_ptr->next;
6060                                 new_sel = NULL;
6061                         } else {
6062                                 new_list_ptr = new_list_ptr->next;
6063                                 old_list_ptr = old_list_ptr->next;
6064                         }
6065                 } else if (new_sel) {
6066                         new_list_ptr = new_list_ptr->next;
6067                 } else if (old_sel) {
6068                         old_list_ptr = old_list_ptr->next;
6069                 }
6070
6071                 g_assert (new_sel || old_sel);
6072
6073                 /* is the page we're looking at on the screen?*/
6074                 cur_page = new_sel ? new_sel->page : old_sel->page;
6075                 if (cur_page < view->start_page || cur_page > view->end_page)
6076                         continue;
6077
6078                 /* seed the cache with a new page.  We are going to need the new
6079                  * region too. */
6080                 if (new_sel) {
6081                         GdkRegion *tmp_region = NULL;
6082
6083                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
6084                                                                cur_page,
6085                                                                view->scale,
6086                                                                &tmp_region);
6087
6088                         if (tmp_region) {
6089                                 new_sel->covered_region = gdk_region_copy (tmp_region);
6090                         }
6091                 }
6092
6093                 /* Now we figure out what needs redrawing */
6094                 if (old_sel && new_sel) {
6095                         if (old_sel->covered_region && new_sel->covered_region) {
6096                                 /* We only want to redraw the areas that have
6097                                  * changed, so we xor the old and new regions
6098                                  * and redraw if it's different */
6099                                 region = gdk_region_copy (old_sel->covered_region);
6100                                 gdk_region_xor (region, new_sel->covered_region);
6101                                 if (gdk_region_empty (region)) {
6102                                         gdk_region_destroy (region);
6103                                         region = NULL;
6104                                 }
6105                         } else if (old_sel->covered_region) {
6106                                 region = gdk_region_copy (old_sel->covered_region);
6107                         } else if (new_sel->covered_region) {
6108                                 region = gdk_region_copy (new_sel->covered_region);
6109                         }
6110                 } else if (old_sel && !new_sel) {
6111                         if (old_sel->covered_region && !gdk_region_empty (old_sel->covered_region)) {
6112                                 region = gdk_region_copy (old_sel->covered_region);
6113                         }
6114                 } else if (!old_sel && new_sel) {
6115                         if (new_sel->covered_region && !gdk_region_empty (new_sel->covered_region)) {
6116                                 region = gdk_region_copy (new_sel->covered_region);
6117                         }
6118                 } else {
6119                         g_assert_not_reached ();
6120                 }
6121
6122                 /* Redraw the damaged region! */
6123                 if (region) {
6124                         GdkRectangle page_area;
6125                         GtkBorder border;
6126
6127                         /* I don't know why but the region is smaller
6128                          * than expected. This hack fixes it, I guess
6129                          * 10 pixels more won't hurt
6130                          */
6131                         gdk_region_shrink (region, -5, -5);
6132
6133                         get_page_extents (view, cur_page, &page_area, &border);
6134                         gdk_region_offset (region,
6135                                            page_area.x + border.left - view->scroll_x,
6136                                            page_area.y + border.top - view->scroll_y);
6137                         gdk_window_invalidate_region (view->layout.bin_window, region, TRUE);
6138                         gdk_region_destroy (region);
6139                 }
6140         }
6141
6142         /* Free the old list, now that we're done with it. */
6143         g_list_foreach (old_list, (GFunc) selection_free, NULL);
6144         g_list_free (old_list);
6145 }
6146
6147 static void
6148 compute_selections (EvView          *view,
6149                     EvSelectionStyle style,
6150                     GdkPoint        *start,
6151                     GdkPoint        *stop)
6152 {
6153         GList *list;
6154
6155         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
6156                 list = compute_new_selection_rect (view, start, stop);
6157         else
6158                 list = compute_new_selection_text (view, style, start, stop);
6159         merge_selection_region (view, list);
6160 }
6161
6162 /* Free's the selection.  It's up to the caller to queue redraws if needed.
6163  */
6164 static void
6165 selection_free (EvViewSelection *selection)
6166 {
6167         if (selection->covered_region)
6168                 gdk_region_destroy (selection->covered_region);
6169         g_free (selection);
6170 }
6171
6172 static void
6173 clear_selection (EvView *view)
6174 {
6175         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
6176         g_list_free (view->selection_info.selections);
6177         view->selection_info.selections = NULL;
6178         view->selection_info.in_selection = FALSE;
6179         if (view->pixbuf_cache)
6180                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
6181         g_object_notify (G_OBJECT (view), "has-selection");
6182 }
6183
6184 void
6185 ev_view_select_all (EvView *view)
6186 {
6187         GList *selections = NULL;
6188         int n_pages, i;
6189
6190         /* Disable selection on rotated pages for the 0.4.0 series */
6191         if (view->rotation != 0)
6192                 return;
6193
6194         clear_selection (view);
6195
6196         n_pages = ev_document_get_n_pages (view->document);
6197         for (i = 0; i < n_pages; i++) {
6198                 gdouble width, height;
6199                 EvViewSelection *selection;
6200
6201                 get_doc_page_size (view, i, &width, &height);
6202
6203                 selection = g_new0 (EvViewSelection, 1);
6204                 selection->page = i;
6205                 selection->style = EV_SELECTION_STYLE_GLYPH;
6206                 selection->rect.x1 = selection->rect.y1 = 0;
6207                 selection->rect.x2 = width;
6208                 selection->rect.y2 = height;
6209
6210                 selections = g_list_append (selections, selection);
6211         }
6212
6213         merge_selection_region (view, selections);
6214         gtk_widget_queue_draw (GTK_WIDGET (view));
6215 }
6216
6217 gboolean
6218 ev_view_get_has_selection (EvView *view)
6219 {
6220         return view->selection_info.selections != NULL;
6221 }
6222
6223 static char *
6224 get_selected_text (EvView *view)
6225 {
6226         GString *text;
6227         GList *l;
6228         gchar *normalized_text;
6229         EvRenderContext *rc;
6230
6231         text = g_string_new (NULL);
6232         rc = ev_render_context_new (NULL, view->rotation, view->scale);
6233
6234         ev_document_doc_mutex_lock ();
6235
6236         for (l = view->selection_info.selections; l != NULL; l = l->next) {
6237                 EvViewSelection *selection = (EvViewSelection *)l->data;
6238                 EvPage *page;
6239                 gchar *tmp;
6240
6241                 page = ev_document_get_page (view->document, selection->page);
6242                 ev_render_context_set_page (rc, page);
6243                 g_object_unref (page);
6244
6245                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
6246                                                       rc, selection->style,
6247                                                       &(selection->rect));
6248
6249                 g_string_append (text, tmp);
6250                 g_free (tmp);
6251         }
6252
6253         g_object_unref (rc);
6254
6255         ev_document_doc_mutex_unlock ();
6256
6257         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
6258         g_string_free (text, TRUE);
6259         return normalized_text;
6260 }
6261
6262 static void
6263 ev_view_clipboard_copy (EvView      *view,
6264                         const gchar *text)
6265 {
6266         GtkClipboard *clipboard;
6267
6268         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
6269                                               GDK_SELECTION_CLIPBOARD);
6270         gtk_clipboard_set_text (clipboard, text, -1);
6271 }
6272
6273 void
6274 ev_view_copy (EvView *ev_view)
6275 {
6276         char *text;
6277
6278         if (!EV_IS_SELECTION (ev_view->document))
6279                 return;
6280
6281         text = get_selected_text (ev_view);
6282         ev_view_clipboard_copy (ev_view, text);
6283         g_free (text);
6284 }
6285
6286 static void
6287 ev_view_primary_get_cb (GtkClipboard     *clipboard,
6288                         GtkSelectionData *selection_data,
6289                         guint             info,
6290                         gpointer          data)
6291 {
6292         EvView *ev_view = EV_VIEW (data);
6293
6294         if (ev_view->link_selected) {
6295                 gtk_selection_data_set_text (selection_data,
6296                                              ev_link_action_get_uri (ev_view->link_selected),
6297                                              -1);
6298         } else if (EV_IS_SELECTION (ev_view->document) &&
6299                    ev_view->selection_info.selections) {
6300                 gchar *text;
6301
6302                 text = get_selected_text (ev_view);
6303                 if (text) {
6304                         gtk_selection_data_set_text (selection_data, text, -1);
6305                         g_free (text);
6306                 }
6307         }
6308 }
6309
6310 static void
6311 ev_view_primary_clear_cb (GtkClipboard *clipboard,
6312                           gpointer      data)
6313 {
6314         EvView *view = EV_VIEW (data);
6315
6316         clear_selection (view);
6317         clear_link_selected (view);
6318 }
6319
6320 static void
6321 ev_view_update_primary_selection (EvView *ev_view)
6322 {
6323         GtkClipboard *clipboard;
6324
6325         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
6326                                               GDK_SELECTION_PRIMARY);
6327
6328         if (ev_view->selection_info.selections || ev_view->link_selected) {
6329                 GtkTargetList *target_list;
6330                 GtkTargetEntry *targets;
6331                 int n_targets;
6332
6333                 target_list = gtk_target_list_new (NULL, 0);
6334                 gtk_target_list_add_text_targets (target_list, 0);
6335                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
6336                 gtk_target_list_unref (target_list);
6337
6338                 if (!gtk_clipboard_set_with_owner (clipboard,
6339                                                    targets, n_targets,
6340                                                    ev_view_primary_get_cb,
6341                                                    ev_view_primary_clear_cb,
6342                                                    G_OBJECT (ev_view)))
6343                         ev_view_primary_clear_cb (clipboard, ev_view);
6344
6345                 gtk_target_table_free (targets, n_targets);
6346         } else {
6347                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
6348                         gtk_clipboard_clear (clipboard);
6349         }
6350 }
6351
6352 static void
6353 clear_link_selected (EvView *view)
6354 {
6355         if (view->link_selected) {
6356                 g_object_unref (view->link_selected);
6357                 view->link_selected = NULL;
6358         }
6359 }
6360
6361 void
6362 ev_view_copy_link_address (EvView       *view,
6363                            EvLinkAction *action)
6364 {
6365         clear_link_selected (view);
6366
6367         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
6368
6369         view->link_selected = g_object_ref (action);
6370         ev_view_update_primary_selection (view);
6371 }
6372
6373 /*** Cursor operations ***/
6374 static void
6375 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
6376 {
6377         GdkCursor *cursor = NULL;
6378         GtkWidget *widget;
6379
6380         if (view->cursor == new_cursor) {
6381                 return;
6382         }
6383
6384         view->cursor = new_cursor;
6385
6386         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
6387         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor);
6388         gdk_window_set_cursor (view->layout.bin_window, cursor);
6389         gdk_flush ();
6390         if (cursor)
6391                 gdk_cursor_unref (cursor);
6392 }
6393
6394 void
6395 ev_view_hide_cursor (EvView *view)
6396 {
6397        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
6398 }
6399
6400 void
6401 ev_view_show_cursor (EvView *view)
6402 {
6403        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
6404 }
6405
6406 static void
6407 ev_view_reset_presentation_state (EvView *view)
6408 {
6409         if (!view->presentation ||
6410             view->presentation_state == EV_PRESENTATION_NORMAL)
6411                 return;
6412
6413         view->presentation_state = EV_PRESENTATION_NORMAL;
6414         gdk_window_set_background (view->layout.bin_window,
6415                                    &GTK_WIDGET (view)->style->black);
6416         gtk_widget_queue_draw (GTK_WIDGET (view));
6417 }
6418
6419 gboolean
6420 ev_view_next_page (EvView *view)
6421 {
6422         int page, n_pages;
6423
6424         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6425
6426         if (!view->document)
6427                 return FALSE;
6428
6429         if (view->presentation &&
6430             (view->presentation_state == EV_PRESENTATION_BLACK ||
6431              view->presentation_state == EV_PRESENTATION_WHITE)) {
6432                 ev_view_reset_presentation_state (view);
6433                 return FALSE;
6434         }
6435
6436         if (view->animation) {
6437                 ev_view_transition_animation_cancel (view->animation, view);
6438         }
6439
6440         ev_view_presentation_transition_stop (view);
6441         ev_view_reset_presentation_state (view);
6442
6443         page = ev_document_model_get_page (view->model);
6444         n_pages = ev_document_get_n_pages (view->document);
6445
6446         if (view->dual_page && !view->presentation)
6447                 page = page + 2;
6448         else
6449                 page = page + 1;
6450
6451         if (page < n_pages) {
6452                 ev_document_model_set_page (view->model, page);
6453                 return TRUE;
6454         } else if (view->presentation && page == n_pages) {
6455                 view->presentation_state = EV_PRESENTATION_END;
6456                 gtk_widget_queue_draw (GTK_WIDGET (view));
6457                 return TRUE;
6458         } else if (view->dual_page && page == n_pages) {
6459                 ev_document_model_set_page (view->model, page - 1);
6460                 return TRUE;
6461         } else {
6462                 return FALSE;
6463         }
6464 }
6465
6466 gboolean
6467 ev_view_previous_page (EvView *view)
6468 {
6469         int page;
6470
6471         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
6472
6473         if (!view->document)
6474                 return FALSE;
6475
6476         if (view->presentation &&
6477             view->presentation_state == EV_PRESENTATION_END) {
6478                 ev_view_reset_presentation_state (view);
6479                 return TRUE;
6480         }
6481
6482         if (view->presentation &&
6483             (view->presentation_state == EV_PRESENTATION_BLACK ||
6484              view->presentation_state == EV_PRESENTATION_WHITE)) {
6485                 ev_view_reset_presentation_state (view);
6486                 return FALSE;
6487         }
6488
6489         if (view->animation) {
6490                 ev_view_transition_animation_cancel (view->animation, view);
6491         }
6492
6493         ev_view_reset_presentation_state (view);
6494
6495         page = ev_document_model_get_page (view->model);
6496
6497         if (view->dual_page && !view->presentation)
6498                 page = page - 2;
6499         else
6500                 page = page - 1;
6501
6502         if (page >= 0) {
6503                 ev_document_model_set_page (view->model, page);
6504                 return TRUE;
6505         } else if (view->dual_page && page == -1) {
6506                 ev_document_model_set_page (view->model, 0);
6507                 return TRUE;
6508         } else {
6509                 return FALSE;
6510         }
6511 }
6512