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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, 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-pixbuf-cache.h"
  37 #include "ev-page-cache.h"
  38 #include "ev-view-marshal.h"
  39 #include "ev-document-annotations.h"
  40 #include "ev-annotation-window.h"
  41 #include "ev-loading-window.h"
  42 #include "ev-view.h"
  43 #include "ev-view-accessible.h"
  44 #include "ev-view-private.h"
  45 #include "ev-view-type-builtins.h"
  46
  47 #define EV_VIEW_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), EV_TYPE_VIEW, EvViewClass))
  48 #define EV_IS_VIEW_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), EV_TYPE_VIEW))
  49 #define EV_VIEW_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), EV_TYPE_VIEW, EvViewClass))
  50
  51 enum {
  52         SIGNAL_BINDING_ACTIVATED,
  53         SIGNAL_HANDLE_LINK,
  54         SIGNAL_EXTERNAL_LINK,
  55         SIGNAL_POPUP_MENU,
  56         SIGNAL_SELECTION_CHANGED,
  57         SIGNAL_SYNC_SOURCE,
  58         N_SIGNALS
  59 };
  60
  61 enum {
  62         TARGET_DND_URI,
  63         TARGET_DND_TEXT,
  64         TARGET_DND_IMAGE
  65 };
  66
  67 static guint signals[N_SIGNALS];
  68
  69 typedef enum {
  70         EV_VIEW_FIND_NEXT,
  71         EV_VIEW_FIND_PREV
  72 } EvViewFindDirection;
  73
  74 #define ZOOM_IN_FACTOR  1.2
  75 #define ZOOM_OUT_FACTOR (1.0/ZOOM_IN_FACTOR)
  76
  77 #define SCROLL_TIME 150
  78
  79 /*** Scrolling ***/
  80 static void       ev_view_set_scroll_adjustments             (GtkLayout          *layout,
  81                                                               GtkAdjustment      *hadjustment,
  82                                                               GtkAdjustment      *vadjustment);
  83 static void       view_update_range_and_current_page         (EvView             *view);
  84 static void       set_scroll_adjustment                      (EvView             *view,
  85                                                               GtkOrientation      orientation,
  86                                                               GtkAdjustment      *adjustment);
  87 static void       add_scroll_binding_keypad                  (GtkBindingSet      *binding_set,
  88                                                               guint               keyval,
  89                                                               GdkModifierType modifiers,
  90                                                               GtkScrollType       scroll,
  91                                                               gboolean            horizontal);
  92 static void       ensure_rectangle_is_visible                (EvView             *view,
  93                                                               GdkRectangle       *rect);
  94
  95 /*** Geometry computations ***/
  96 static void       compute_border                             (EvView             *view,
  97                                                               int                 width,
  98                                                               int                 height,
  99                                                               GtkBorder          *border);
 100 static void       get_page_y_offset                          (EvView             *view,
 101                                                               int                 page,
 102                                                               int                *y_offset);
 103 static void       view_rect_to_doc_rect                      (EvView             *view,
 104                                                               GdkRectangle       *view_rect,
 105                                                               GdkRectangle       *page_area,
 106                                                               EvRectangle        *doc_rect);
 107 static void       doc_rect_to_view_rect                      (EvView             *view,
 108                                                               int                 page,
 109                                                               EvRectangle        *doc_rect,
 110                                                               GdkRectangle       *view_rect);
 111 static gboolean   get_dual_even_left                         (EvView             *view);
 112 static void       find_page_at_location                      (EvView             *view,
 113                                                               gdouble             x,
 114                                                               gdouble             y,
 115                                                               gint               *page,
 116                                                               gint               *x_offset,
 117                                                               gint               *y_offset);
 118 static void       doc_point_to_view_point                    (EvView             *view,
 119                                                               int                 page,
 120                                                               EvPoint            *doc_point,
 121                                                               GdkPoint           *view_point);
 122 /*** Hyperrefs ***/
 123 static EvLink *   ev_view_get_link_at_location               (EvView             *view,
 124                                                               gdouble             x,
 125                                                               gdouble             y);
 126 static char*      tip_from_link                              (EvView             *view,
 127                                                               EvLink             *link);
 128 /*** Forms ***/
 129 static EvFormField *ev_view_get_form_field_at_location       (EvView             *view,
 130                                                                gdouble            x,
 131                                                                gdouble            y);
 132
 133 /*** Annotations ***/
 134 static EvAnnotation *ev_view_get_annotation_at_location      (EvView             *view,
 135                                                               gdouble             x,
 136                                                               gdouble             y);
 137 static void          show_annotation_windows                 (EvView             *view,
 138                                                               gint                page);
 139 static void          hide_annotation_windows                 (EvView             *view,
 140                                                               gint                page);
 141 /*** GtkWidget implementation ***/
 142 static void       ev_view_size_request_continuous_dual_page  (EvView             *view,
 143                                                               GtkRequisition     *requisition);
 144 static void       ev_view_size_request_continuous            (EvView             *view,
 145                                                               GtkRequisition     *requisition);
 146 static void       ev_view_size_request_dual_page             (EvView             *view,
 147                                                               GtkRequisition     *requisition);
 148 static void       ev_view_size_request_single_page           (EvView             *view,
 149                                                               GtkRequisition     *requisition);
 150 static void       ev_view_size_request                       (GtkWidget          *widget,
 151                                                               GtkRequisition     *requisition);
 152 static void       ev_view_size_allocate                      (GtkWidget          *widget,
 153                                                               GtkAllocation      *allocation);
 154 static void       ev_view_realize                            (GtkWidget          *widget);
 155 static gboolean   ev_view_scroll_event                       (GtkWidget          *widget,
 156                                                               GdkEventScroll     *event);
 157 static gboolean   ev_view_expose_event                       (GtkWidget          *widget,
 158                                                               GdkEventExpose     *event);
 159 static gboolean   ev_view_popup_menu                         (GtkWidget          *widget);
 160 static gboolean   ev_view_button_press_event                 (GtkWidget          *widget,
 161                                                               GdkEventButton     *event);
 162 static gboolean   ev_view_motion_notify_event                (GtkWidget          *widget,
 163                                                               GdkEventMotion     *event);
 164 static gboolean   ev_view_button_release_event               (GtkWidget          *widget,
 165                                                               GdkEventButton     *event);
 166 static gboolean   ev_view_enter_notify_event                 (GtkWidget          *widget,
 167                                                               GdkEventCrossing   *event);
 168 static gboolean   ev_view_leave_notify_event                 (GtkWidget          *widget,
 169                                                               GdkEventCrossing   *event);
 170 static void       ev_view_style_set                          (GtkWidget          *widget,
 171                                                               GtkStyle           *old_style);
 172 static void       ev_view_remove_all                         (EvView             *view);
 173
 174 static AtkObject *ev_view_get_accessible                     (GtkWidget *widget);
 175
 176 /*** Drawing ***/
 177 static void       highlight_find_results                     (EvView             *view,
 178                                                               int                 page);
 179 static void       highlight_forward_search_results           (EvView             *view,
 180                                                               int                 page);
 181 static void       draw_one_page                              (EvView             *view,
 182                                                               gint                page,
 183                                                               cairo_t            *cr,
 184                                                               GdkRectangle       *page_area,
 185                                                               GtkBorder          *border,
 186                                                               GdkRectangle       *expose_area,
 187                                                               gboolean           *page_ready);
 188 static void       show_loading_window                        (EvView             *view);
 189 static void       hide_loading_window                        (EvView             *view);
 190 static void       ev_view_reload_page                        (EvView             *view,
 191                                                               gint                page,
 192                                                               cairo_region_t     *region);
 193 static void       ev_view_loading_window_move                (EvView             *view);
 194
 195 /*** Callbacks ***/
 196 static void       ev_view_change_page                        (EvView             *view,
 197                                                               gint                new_page);
 198 static void       job_finished_cb                            (EvPixbufCache      *pixbuf_cache,
 199                                                               cairo_region_t     *region,
 200                                                               EvView             *view);
 201 static void       ev_view_page_changed_cb                    (EvDocumentModel    *model,
 202                                                               gint                old_page,
 203                                                               gint                new_page,
 204                                                               EvView             *view);
 205 static void       on_adjustment_value_changed                (GtkAdjustment      *adjustment,
 206                                                               EvView             *view);
 207
 208 /*** GObject ***/
 209 static void       ev_view_finalize                           (GObject            *object);
 210 static void       ev_view_destroy                            (GtkObject          *object);
 211 static void       ev_view_class_init                         (EvViewClass        *class);
 212 static void       ev_view_init                               (EvView             *view);
 213
 214 /*** Zoom and sizing ***/
 215 static double   zoom_for_size_fit_width                      (gdouble doc_width,
 216                                                               gdouble doc_height,
 217                                                               int     target_width,
 218                                                               int     target_height);
 219 static double   zoom_for_size_fit_height                     (gdouble doc_width,
 220                                                               gdouble doc_height,
 221                                                               int     target_width,
 222                                                               int     target_height);
 223 static double   zoom_for_size_best_fit                       (gdouble doc_width,
 224                                                               gdouble doc_height,
 225                                                               int     target_width,
 226                                                               int     target_height);
 227 static void     ev_view_zoom_for_size                        (EvView *view,
 228                                                               int     width,
 229                                                               int     height);
 230 static void     ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
 231                                                                 int     width,
 232                                                                 int     height);
 233 static void     ev_view_zoom_for_size_continuous               (EvView *view,
 234                                                                 int     width,
 235                                                                 int     height);
 236 static void     ev_view_zoom_for_size_dual_page                (EvView *view,
 237                                                                 int     width,
 238                                                                 int     height);
 239 static void     ev_view_zoom_for_size_single_page              (EvView *view,
 240                                                                 int     width,
 241                                                                 int     height);
 242 /*** Cursors ***/
 243 static void       ev_view_set_cursor                         (EvView             *view,
 244                                                               EvViewCursor        new_cursor);
 245 static void       ev_view_handle_cursor_over_xy              (EvView *view,
 246                                                               gint x,
 247                                                               gint y);
 248
 249 /*** Find ***/
 250 static gint         ev_view_find_get_n_results               (EvView             *view,
 251                                                               gint                page);
 252 static EvRectangle *ev_view_find_get_result                  (EvView             *view,
 253                                                               gint                page,
 254                                                               gint                result);
 255 static void       jump_to_find_result                        (EvView             *view);
 256 static void       jump_to_find_page                          (EvView             *view,
 257                                                               EvViewFindDirection direction,
 258                                                               gint                shift);
 259 /*** Selection ***/
 260 static void       compute_selections                         (EvView             *view,
 261                                                               EvSelectionStyle    style,
 262                                                               GdkPoint           *start,
 263                                                               GdkPoint           *stop);
 264 static void       clear_selection                            (EvView             *view);
 265 static void       clear_link_selected                        (EvView             *view);
 266 static void       selection_free                             (EvViewSelection    *selection);
 267 static char*      get_selected_text                          (EvView             *ev_view);
 268 static void       ev_view_primary_get_cb                     (GtkClipboard       *clipboard,
 269                                                               GtkSelectionData   *selection_data,
 270                                                               guint               info,
 271                                                               gpointer            data);
 272 static void       ev_view_primary_clear_cb                   (GtkClipboard       *clipboard,
 273                                                               gpointer            data);
 274 static void       ev_view_update_primary_selection           (EvView             *ev_view);
 275
 276 G_DEFINE_TYPE (EvView, ev_view, GTK_TYPE_LAYOUT)
 277
 278 /* HeightToPage cache */
 279 #define EV_HEIGHT_TO_PAGE_CACHE_KEY "ev-height-to-page-cache"
 280
 281 static void
 282 build_height_to_page (EvHeightToPageCache *cache,
 283                       EvDocument          *document,
 284                       gint                 rotation)
 285 {
 286         gboolean swap, uniform, dual_even_left;
 287         int i;
 288         double uniform_height, page_height, next_page_height;
 289         double saved_height;
 290         gdouble u_width, u_height;
 291         gint n_pages;
 292
 293         swap = (rotation == 90 || rotation == 270);
 294
 295         uniform = ev_document_is_page_size_uniform (document);
 296         n_pages = ev_document_get_n_pages (document);
 297         dual_even_left = (n_pages > 2);
 298
 299         g_free (cache->height_to_page);
 300         g_free (cache->dual_height_to_page);
 301
 302         cache->rotation = rotation;
 303         cache->height_to_page = g_new0 (gdouble, n_pages + 1);
 304         cache->dual_height_to_page = g_new0 (gdouble, n_pages + 2);
 305
 306         if (uniform)
 307                 ev_document_get_page_size (document, 0, &u_width, &u_height);
 308
 309         saved_height = 0;
 310         for (i = 0; i <= n_pages; i++) {
 311                 if (uniform) {
 312                         uniform_height = swap ? u_width : u_height;
 313                         cache->height_to_page[i] = i * uniform_height;
 314                 } else {
 315                         if (i < n_pages) {
 316                                 gdouble w, h;
 317
 318                                 ev_document_get_page_size (document, i, &w, &h);
 319                                 page_height = swap ? w : h;
 320                         } else {
 321                                 page_height = 0;
 322                         }
 323                         cache->height_to_page[i] = saved_height;
 324                         saved_height += page_height;
 325                 }
 326         }
 327
 328         if (dual_even_left && !uniform) {
 329                 gdouble w, h;
 330
 331                 ev_document_get_page_size (document, 0, &w, &h);
 332                 saved_height = swap ? w : h;
 333         } else {
 334                 saved_height = 0;
 335         }
 336
 337         for (i = dual_even_left; i < n_pages + 2; i += 2) {
 338                 if (uniform) {
 339                         uniform_height = swap ? u_width : u_height;
 340                         cache->dual_height_to_page[i] = ((i + dual_even_left) / 2) * uniform_height;
 341                         if (i + 1 < n_pages + 2)
 342                                 cache->dual_height_to_page[i + 1] = ((i + dual_even_left) / 2) * uniform_height;
 343                 } else {
 344                         if (i + 1 < n_pages) {
 345                                 gdouble w, h;
 346
 347                                 ev_document_get_page_size (document, i + 1, &w, &h);
 348                                 next_page_height = swap ? w : h;
 349                         } else {
 350                                 next_page_height = 0;
 351                         }
 352
 353                         if (i < n_pages) {
 354                                 gdouble w, h;
 355
 356                                 ev_document_get_page_size (document, i, &w, &h);
 357                                 page_height = swap ? w : h;
 358                         } else {
 359                                 page_height = 0;
 360                         }
 361
 362                         if (i + 1 < n_pages + 2) {
 363                                 cache->dual_height_to_page[i] = saved_height;
 364                                 cache->dual_height_to_page[i + 1] = saved_height;
 365                                 saved_height += MAX(page_height, next_page_height);
 366                         } else {
 367                                 cache->dual_height_to_page[i] = saved_height;
 368                         }
 369                 }
 370         }
 371 }
 372
 373 static void
 374 ev_height_to_page_cache_get_height (EvHeightToPageCache *cache,
 375                                     EvDocument          *document,
 376                                     gint                 page,
 377                                     gint                 rotation,
 378                                     gdouble             *height,
 379                                     gdouble             *dual_height)
 380 {
 381         if (cache->rotation != rotation)
 382                 build_height_to_page (cache, document, rotation);
 383
 384         *height = cache->height_to_page[page];
 385         *dual_height = cache->dual_height_to_page[page];
 386 }
 387
 388 static void
 389 ev_height_to_page_cache_free (EvHeightToPageCache *cache)
 390 {
 391         if (cache->height_to_page) {
 392                 g_free (cache->height_to_page);
 393                 cache->height_to_page = NULL;
 394         }
 395
 396         if (cache->dual_height_to_page) {
 397                 g_free (cache->dual_height_to_page);
 398                 cache->dual_height_to_page = NULL;
 399         }
 400         g_free (cache);
 401 }
 402
 403 static EvHeightToPageCache *
 404 ev_view_get_height_to_page_cache (EvView *view)
 405 {
 406         EvHeightToPageCache *cache;
 407
 408         if (!view->document)
 409                 return NULL;
 410
 411         cache = g_object_get_data (G_OBJECT (view->document), EV_HEIGHT_TO_PAGE_CACHE_KEY);
 412         if (!cache) {
 413                 cache = g_new0 (EvHeightToPageCache, 1);
 414                 build_height_to_page (cache, view->document, view->rotation);
 415                 g_object_set_data_full (G_OBJECT (view->document),
 416                                         EV_HEIGHT_TO_PAGE_CACHE_KEY,
 417                                         cache,
 418                                         (GDestroyNotify)ev_height_to_page_cache_free);
 419         }
 420
 421         return cache;
 422 }
 423
 424 static void
 425 ev_view_get_height_to_page (EvView *view,
 426                             gint    page,
 427                             gint   *height,
 428                             gint   *dual_height)
 429 {
 430         gdouble h, dh;
 431
 432         if (!view->height_to_page_cache)
 433                 return;
 434
 435         ev_height_to_page_cache_get_height (view->height_to_page_cache,
 436                                             view->document,
 437                                             page,
 438                                             view->rotation,
 439                                             &h, &dh);
 440         if (height)
 441                 *height = (gint)(h * view->scale + 0.5);
 442
 443         if (dual_height)
 444                 *dual_height = (gint)(dh * view->scale + 0.5);
 445 }
 446
 447 static gint
 448 ev_view_get_scrollbar_size (EvView        *view,
 449                             GtkOrientation orientation)
 450 {
 451         GtkWidget *widget = GTK_WIDGET (view);
 452         GtkWidget *sb;
 453         GtkWidget *swindow = gtk_widget_get_parent (GTK_WIDGET (view));
 454         GtkAllocation allocation;
 455         GtkRequisition req;
 456         gint spacing;
 457
 458         if (!GTK_IS_SCROLLED_WINDOW (swindow))
 459                 return 0;
 460
 461         gtk_widget_get_allocation (widget, &allocation);
 462
 463         if (orientation == GTK_ORIENTATION_VERTICAL) {
 464                 if (allocation.height >= view->requisition.height)
 465                         sb = gtk_scrolled_window_get_vscrollbar (GTK_SCROLLED_WINDOW (swindow));
 466                 else
 467                         return 0;
 468         } else {
 469                 if (allocation.width >= view->requisition.width)
 470                         sb = gtk_scrolled_window_get_hscrollbar (GTK_SCROLLED_WINDOW (swindow));
 471                 else
 472                         return 0;
 473         }
 474
 475         gtk_widget_style_get (swindow, "scrollbar_spacing", &spacing, NULL);
 476         gtk_widget_size_request (sb, &req);
 477
 478         return (orientation == GTK_ORIENTATION_VERTICAL ? req.width : req.height) + spacing;
 479 }
 480
 481 static void
 482 scroll_to_point (EvView        *view,
 483                  gdouble        x,
 484                  gdouble        y,
 485                  GtkOrientation orientation)
 486 {
 487         gdouble page_size;
 488         gdouble upper, lower;
 489
 490         if (orientation == GTK_ORIENTATION_VERTICAL) {
 491                 page_size = gtk_adjustment_get_page_size (view->vadjustment);
 492                 upper = gtk_adjustment_get_upper (view->vadjustment);
 493                 lower = gtk_adjustment_get_lower (view->vadjustment);
 494
 495                 if (view->continuous) {
 496                         gtk_adjustment_clamp_page (view->vadjustment,
 497                                                    y - view->spacing / 2,
 498                                                    y + page_size);
 499                 } else {
 500                         gtk_adjustment_set_value (view->vadjustment,
 501                                                   CLAMP (y, lower, upper - page_size));
 502                 }
 503         } else {
 504                 page_size = gtk_adjustment_get_page_size (view->hadjustment);
 505                 upper = gtk_adjustment_get_upper (view->hadjustment);
 506                 lower = gtk_adjustment_get_lower (view->hadjustment);
 507
 508                 if (view->dual_page) {
 509                         gtk_adjustment_clamp_page (view->hadjustment, x,
 510                                                    x + page_size);
 511                 } else {
 512                         gtk_adjustment_set_value (view->hadjustment,
 513                                                   CLAMP (x, lower, upper - page_size));
 514                 }
 515         }
 516 }
 517
 518 static void
 519 ev_view_scroll_to_page_position (EvView *view, GtkOrientation orientation)
 520 {
 521         gdouble x, y;
 522
 523         if (!view->document)
 524                 return;
 525
 526         if ((orientation == GTK_ORIENTATION_VERTICAL && view->pending_point.y == 0) ||
 527             (orientation == GTK_ORIENTATION_HORIZONTAL && view->pending_point.x == 0)) {
 528                 GdkRectangle page_area;
 529                 GtkBorder    border;
 530
 531                 ev_view_get_page_extents (view, view->current_page, &page_area, &border);
 532                 x = page_area.x;
 533                 y = page_area.y;
 534         } else {
 535                 GdkPoint view_point;
 536
 537                 doc_point_to_view_point (view, view->current_page,
 538                                          &view->pending_point, &view_point);
 539                 x = view_point.x;
 540                 y = view_point.y;
 541         }
 542
 543         scroll_to_point (view, x, y, orientation);
 544 }
 545
 546 static void
 547 view_set_adjustment_values (EvView         *view,
 548                             GtkOrientation  orientation)
 549 {
 550         GtkWidget *widget = GTK_WIDGET (view);
 551         GtkAdjustment *adjustment;
 552         GtkAllocation allocation;
 553         int req_size;
 554         int alloc_size;
 555         gdouble page_size;
 556         gdouble value;
 557         gdouble upper;
 558         double factor;
 559         gint new_value;
 560
 561         gtk_widget_get_allocation (widget, &allocation);
 562
 563         if (orientation == GTK_ORIENTATION_HORIZONTAL)  {
 564                 req_size = view->requisition.width;
 565                 alloc_size = allocation.width;
 566                 adjustment = view->hadjustment;
 567         } else {
 568                 req_size = view->requisition.height;
 569                 alloc_size = allocation.height;
 570                 adjustment = view->vadjustment;
 571         }
 572
 573         if (!adjustment)
 574                 return;
 575
 576         factor = 1.0;
 577         value = gtk_adjustment_get_value (adjustment);
 578         upper = gtk_adjustment_get_upper (adjustment);
 579         page_size = gtk_adjustment_get_page_size (adjustment);
 580
 581         switch (view->pending_scroll) {
 582                 case SCROLL_TO_KEEP_POSITION:
 583                 case SCROLL_TO_FIND_LOCATION:
 584                         factor = value / upper;
 585                         break;
 586                 case SCROLL_TO_PAGE_POSITION:
 587                         break;
 588                 case SCROLL_TO_CENTER:
 589                         factor = (value + page_size * 0.5) / upper;
 590                         break;
 591         }
 592
 593         upper = MAX (alloc_size, req_size);
 594         page_size = alloc_size;
 595
 596         gtk_adjustment_set_page_size (adjustment, page_size);
 597         gtk_adjustment_set_step_increment (adjustment, alloc_size * 0.1);
 598         gtk_adjustment_set_page_increment (adjustment, alloc_size * 0.9);
 599         gtk_adjustment_set_lower (adjustment, 0);
 600         gtk_adjustment_set_upper (adjustment, upper);
 601
 602         /*
 603          * We add 0.5 to the values before to average out our rounding errors.
 604          */
 605         switch (view->pending_scroll) {
 606                 case SCROLL_TO_KEEP_POSITION:
 607                 case SCROLL_TO_FIND_LOCATION:
 608                         new_value = CLAMP (upper * factor + 0.5, 0, upper - page_size);
 609                         gtk_adjustment_set_value (adjustment, (int)new_value);
 610                         break;
 611                 case SCROLL_TO_PAGE_POSITION:
 612                         ev_view_scroll_to_page_position (view, orientation);
 613                         break;
 614                 case SCROLL_TO_CENTER:
 615                         new_value = CLAMP (upper * factor - page_size * 0.5 + 0.5,
 616                                            0, upper - page_size);
 617                         gtk_adjustment_set_value (adjustment, (int)new_value);
 618                         break;
 619         }
 620
 621         gtk_adjustment_changed (adjustment);
 622 }
 623
 624 static void
 625 view_update_range_and_current_page (EvView *view)
 626 {
 627         gint start = view->start_page;
 628         gint end = view->end_page;
 629
 630         if (ev_document_get_n_pages (view->document) <= 0 ||
 631             !ev_document_check_dimensions (view->document))
 632                 return;
 633
 634         if (view->continuous) {
 635                 GdkRectangle current_area, unused, page_area;
 636                 GtkBorder border;
 637                 gboolean found = FALSE;
 638                 gint area_max = -1, area;
 639                 gint best_current_page = -1;
 640                 int i, j = 0;
 641
 642                 if (!(view->vadjustment && view->hadjustment))
 643                         return;
 644
 645                 current_area.x = gtk_adjustment_get_value (view->hadjustment);
 646                 current_area.width = gtk_adjustment_get_page_size (view->hadjustment);
 647                 current_area.y = gtk_adjustment_get_value (view->vadjustment);
 648                 current_area.height = gtk_adjustment_get_page_size (view->vadjustment);
 649
 650                 for (i = 0; i < ev_document_get_n_pages (view->document); i++) {
 651
 652                         ev_view_get_page_extents (view, i, &page_area, &border);
 653
 654                         if (gdk_rectangle_intersect (&current_area, &page_area, &unused)) {
 655                                 area = unused.width * unused.height;
 656
 657                                 if (!found) {
 658                                         area_max = area;
 659                                         view->start_page = i;
 660                                         found = TRUE;
 661                                         best_current_page = i;
 662                                 }
 663                                 if (area > area_max) {
 664                                         best_current_page = (area == area_max) ? MIN (i, best_current_page) : i;
 665                                         area_max = area;
 666                                 }
 667
 668                                 view->end_page = i;
 669                                 j = 0;
 670                         } else if (found && view->current_page <= view->end_page) {
 671                                 if (view->dual_page && j < 1) {
 672                                         /* In dual mode  we stop searching
 673                                          * after two consecutive non-visible pages.
 674                                          */
 675                                         j++;
 676                                         continue;
 677                                 }
 678                                 break;
 679                         }
 680                 }
 681
 682                 if (view->pending_scroll == SCROLL_TO_KEEP_POSITION) {
 683                         best_current_page = MAX (best_current_page, view->start_page);
 684
 685                         if (view->current_page != best_current_page) {
 686                                 view->current_page = best_current_page;
 687                                 hide_loading_window (view);
 688                                 ev_document_model_set_page (view->model, best_current_page);
 689                         }
 690                 }
 691         } else if (view->dual_page) {
 692                 if (view->current_page % 2 == get_dual_even_left (view)) {
 693                         view->start_page = view->current_page;
 694                         if (view->current_page + 1 < ev_document_get_n_pages (view->document))
 695                                 view->end_page = view->start_page + 1;
 696                         else
 697                                 view->end_page = view->start_page;
 698                 } else {
 699                         if (view->current_page < 1)
 700                                 view->start_page = view->current_page;
 701                         else
 702                                 view->start_page = view->current_page - 1;
 703                         view->end_page = view->current_page;
 704                 }
 705         } else {
 706                 view->start_page = view->current_page;
 707                 view->end_page = view->current_page;
 708         }
 709
 710         if (view->start_page == -1 || view->end_page == -1)
 711                 return;
 712
 713         if (start != view->start_page || end != view->end_page) {
 714                 gint i;
 715
 716                 for (i = start; i < view->start_page && start != -1; i++) {
 717                         hide_annotation_windows (view, i);
 718                 }
 719
 720                 for (i = end; i > view->end_page && end != -1; i--) {
 721                         hide_annotation_windows (view, i);
 722                 }
 723         }
 724
 725         ev_page_cache_set_page_range (view->page_cache,
 726                                       view->start_page,
 727                                       view->end_page);
 728         ev_pixbuf_cache_set_page_range (view->pixbuf_cache,
 729                                         view->start_page,
 730                                         view->end_page,
 731                                         view->selection_info.selections);
 732
 733         if (ev_pixbuf_cache_get_surface (view->pixbuf_cache, view->current_page))
 734             gtk_widget_queue_draw (GTK_WIDGET (view));
 735 }
 736
 737 static void
 738 set_scroll_adjustment (EvView *view,
 739                        GtkOrientation  orientation,
 740                        GtkAdjustment  *adjustment)
 741 {
 742         GtkAdjustment **to_set;
 743
 744         if (orientation == GTK_ORIENTATION_HORIZONTAL)
 745                 to_set = &view->hadjustment;
 746         else
 747                 to_set = &view->vadjustment;
 748
 749         if (*to_set != adjustment) {
 750                 if (*to_set) {
 751                         g_signal_handlers_disconnect_by_func (*to_set,
 752                                                               (gpointer) on_adjustment_value_changed,
 753                                                               view);
 754                         g_object_unref (*to_set);
 755                 }
 756
 757                 *to_set = adjustment;
 758                 view_set_adjustment_values (view, orientation);
 759
 760                 if (*to_set) {
 761                         g_object_ref (*to_set);
 762                         g_signal_connect (*to_set, "value_changed",
 763                                           G_CALLBACK (on_adjustment_value_changed), view);
 764                 }
 765         }
 766 }
 767
 768 static void
 769 ev_view_set_scroll_adjustments (GtkLayout      *layout,
 770                                 GtkAdjustment  *hadjustment,
 771                                 GtkAdjustment  *vadjustment)
 772 {
 773         EvView *view = EV_VIEW (layout);
 774
 775         set_scroll_adjustment (view, GTK_ORIENTATION_HORIZONTAL, hadjustment);
 776         set_scroll_adjustment (view, GTK_ORIENTATION_VERTICAL, vadjustment);
 777
 778         on_adjustment_value_changed (NULL, view);
 779 }
 780
 781 static void
 782 add_scroll_binding_keypad (GtkBindingSet  *binding_set,
 783                            guint           keyval,
 784                            GdkModifierType modifiers,
 785                            GtkScrollType   scroll,
 786                            gboolean        horizontal)
 787 {
 788   guint keypad_keyval = keyval - GDK_Left + GDK_KP_Left;
 789
 790   gtk_binding_entry_add_signal (binding_set, keyval, modifiers,
 791                                 "binding_activated", 2,
 792                                 GTK_TYPE_SCROLL_TYPE, scroll,
 793                                 G_TYPE_BOOLEAN, horizontal);
 794   gtk_binding_entry_add_signal (binding_set, keypad_keyval, modifiers,
 795                                 "binding_activated", 2,
 796                                 GTK_TYPE_SCROLL_TYPE, scroll,
 797                                 G_TYPE_BOOLEAN, horizontal);
 798 }
 799
 800 static gdouble
 801 compute_scroll_increment (EvView        *view,
 802                           GtkScrollType  scroll)
 803 {
 804         GtkWidget *widget = GTK_WIDGET (view);
 805         GtkAdjustment *adjustment = view->vadjustment;
 806         cairo_region_t *text_region, *region;
 807         GtkAllocation allocation;
 808         gint page;
 809         GdkRectangle rect;
 810         EvRectangle doc_rect;
 811         GdkRectangle page_area;
 812         GtkBorder border;
 813         gdouble fraction = 1.0;
 814
 815         if (scroll != GTK_SCROLL_PAGE_BACKWARD && scroll != GTK_SCROLL_PAGE_FORWARD)
 816                 return gtk_adjustment_get_page_size (adjustment);
 817
 818         page = scroll == GTK_SCROLL_PAGE_BACKWARD ? view->start_page : view->end_page;
 819
 820         text_region = ev_page_cache_get_text_mapping (view->page_cache, page);
 821         if (!text_region || cairo_region_is_empty (text_region))
 822                 return gtk_adjustment_get_page_size (adjustment);
 823
 824         gtk_widget_get_allocation (widget, &allocation);
 825         ev_view_get_page_extents (view, page, &page_area, &border);
 826         rect.x = page_area.x + view->scroll_x;
 827         rect.y = view->scroll_y + (scroll == GTK_SCROLL_PAGE_BACKWARD ? 5 : allocation.height - 5);
 828         rect.width = page_area.width;
 829         rect.height = 1;
 830         view_rect_to_doc_rect (view, &rect, &page_area, &doc_rect);
 831
 832         /* Convert the doc rectangle into a GdkRectangle */
 833         rect.x = doc_rect.x1;
 834         rect.y = doc_rect.y1;
 835         rect.width = doc_rect.x2 - doc_rect.x1;
 836         rect.height = MAX (1, doc_rect.y2 - doc_rect.y1);
 837         region = cairo_region_create_rectangle (&rect);
 838
 839         cairo_region_intersect (region, text_region);
 840         if (cairo_region_num_rectangles (region)) {
 841                 EvRenderContext *rc;
 842                 EvPage  *ev_page;
 843                 cairo_region_t *sel_region;
 844
 845                 cairo_region_get_rectangle (region, 0, &rect);
 846                 ev_page = ev_document_get_page (view->document, page);
 847                 rc = ev_render_context_new (ev_page, view->rotation, view->scale);
 848                 g_object_unref (ev_page);
 849                 /* Get the selection region to know the height of the line */
 850                 doc_rect.x1 = doc_rect.x2 = rect.x + 0.5;
 851                 doc_rect.y1 = doc_rect.y2 = rect.y + 0.5;
 852
 853                 ev_document_doc_mutex_lock ();
 854                 sel_region = ev_selection_get_selection_region (EV_SELECTION (view->document),
 855                                                                 rc, EV_SELECTION_STYLE_LINE,
 856                                                                 &doc_rect);
 857                 ev_document_doc_mutex_unlock ();
 858
 859                 g_object_unref (rc);
 860
 861                 if (cairo_region_num_rectangles (sel_region) > 0) {
 862                         cairo_region_get_rectangle (sel_region, 0, &rect);
 863                         fraction = 1 - (rect.height / gtk_adjustment_get_page_size (adjustment));
 864                 }
 865                 cairo_region_destroy (sel_region);
 866         }
 867         cairo_region_destroy (region);
 868
 869         return gtk_adjustment_get_page_size (adjustment) * fraction;
 870
 871 }
 872
 873 void
 874 ev_view_scroll (EvView        *view,
 875                 GtkScrollType  scroll,
 876                 gboolean       horizontal)
 877 {
 878         GtkAdjustment *adjustment;
 879         double value, increment;
 880         gdouble upper, lower;
 881         gdouble page_size;
 882         gdouble step_increment;
 883         gboolean first_page = FALSE;
 884         gboolean last_page = FALSE;
 885
 886         view->jump_to_find_result = FALSE;
 887
 888         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
 889                 switch (scroll) {
 890                         case GTK_SCROLL_PAGE_BACKWARD:
 891                         case GTK_SCROLL_STEP_BACKWARD:
 892                                 ev_view_previous_page (view);
 893                                 break;
 894                         case GTK_SCROLL_PAGE_FORWARD:
 895                         case GTK_SCROLL_STEP_FORWARD:
 896                                 ev_view_next_page (view);
 897                                 break;
 898                         default:
 899                                 break;
 900                 }
 901                 return;
 902         }
 903
 904         /* Assign values for increment and vertical adjustment */
 905         adjustment = horizontal ? view->hadjustment : view->vadjustment;
 906         value = gtk_adjustment_get_value (adjustment);
 907         upper = gtk_adjustment_get_upper (adjustment);
 908         lower = gtk_adjustment_get_lower (adjustment);
 909         page_size = gtk_adjustment_get_page_size (adjustment);
 910         step_increment = gtk_adjustment_get_step_increment (adjustment);
 911
 912         /* Assign boolean for first and last page */
 913         if (view->current_page == 0)
 914                 first_page = TRUE;
 915         if (view->current_page == ev_document_get_n_pages (view->document) - 1)
 916                 last_page = TRUE;
 917
 918         switch (scroll) {
 919                 case GTK_SCROLL_PAGE_BACKWARD:
 920                         /* Do not jump backwards if at the first page */
 921                         if (value == lower && first_page) {
 922                                 /* Do nothing */
 923                                 /* At the top of a page, assign the upper bound limit of previous page */
 924                         } else if (value == lower) {
 925                                 value = upper - page_size;
 926                                 ev_view_previous_page (view);
 927                                 /* Jump to the top */
 928                         } else {
 929                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_BACKWARD);
 930                                 value = MAX (value - increment, lower);
 931                         }
 932                         break;
 933                 case GTK_SCROLL_PAGE_FORWARD:
 934                         /* Do not jump forward if at the last page */
 935                         if (value == (upper - page_size) && last_page) {
 936                                 /* Do nothing */
 937                         /* At the bottom of a page, assign the lower bound limit of next page */
 938                         } else if (value == (upper - page_size)) {
 939                                 value = 0;
 940                                 ev_view_next_page (view);
 941                         /* Jump to the bottom */
 942                         } else {
 943                                 increment = compute_scroll_increment (view, GTK_SCROLL_PAGE_FORWARD);
 944                                 value = MIN (value + increment, upper - page_size);
 945                         }
 946                         break;
 947                 case GTK_SCROLL_STEP_BACKWARD:
 948                         value -= step_increment;
 949                         break;
 950                 case GTK_SCROLL_STEP_FORWARD:
 951                         value += step_increment;
 952                         break;
 953                 case GTK_SCROLL_STEP_DOWN:
 954                         value -= step_increment / 10;
 955                         break;
 956                 case GTK_SCROLL_STEP_UP:
 957                         value += step_increment / 10;
 958                         break;
 959                 default:
 960                         break;
 961         }
 962
 963         value = CLAMP (value, lower, upper - page_size);
 964
 965         gtk_adjustment_set_value (adjustment, value);
 966 }
 967
 968 #define MARGIN 5
 969
 970 static void
 971 ensure_rectangle_is_visible (EvView *view, GdkRectangle *rect)
 972 {
 973         GtkWidget *widget = GTK_WIDGET (view);
 974         GtkAdjustment *adjustment;
 975         GtkAllocation allocation;
 976         gdouble adj_value;
 977         int value;
 978
 979         view->pending_scroll = SCROLL_TO_FIND_LOCATION;
 980
 981         gtk_widget_get_allocation (widget, &allocation);
 982
 983         adjustment = view->vadjustment;
 984         adj_value = gtk_adjustment_get_value (adjustment);
 985
 986         if (rect->y < adj_value) {
 987                 value = MAX (gtk_adjustment_get_lower (adjustment), rect->y - MARGIN);
 988                 gtk_adjustment_set_value (view->vadjustment, value);
 989         } else if (rect->y + rect->height > adj_value + allocation.height) {
 990                 value = MIN (gtk_adjustment_get_upper (adjustment), rect->y + rect->height -
 991                              allocation.height + MARGIN);
 992                 gtk_adjustment_set_value (view->vadjustment, value);
 993         }
 994
 995         adjustment = view->hadjustment;
 996         adj_value = gtk_adjustment_get_value (adjustment);
 997
 998         if (rect->x < adj_value) {
 999                 value = MAX (gtk_adjustment_get_lower (adjustment), rect->x - MARGIN);
1000                 gtk_adjustment_set_value (view->hadjustment, value);
1001         } else if (rect->x + rect->height > adj_value + allocation.width) {
1002                 value = MIN (gtk_adjustment_get_upper (adjustment), rect->x + rect->width -
1003                              allocation.width + MARGIN);
1004                 gtk_adjustment_set_value (view->hadjustment, value);
1005         }
1006
1007         gtk_widget_queue_resize (GTK_WIDGET (view));
1008 }
1009
1010 /*** Geometry computations ***/
1011
1012 static void
1013 compute_border (EvView *view, int width, int height, GtkBorder *border)
1014 {
1015         ev_document_misc_get_page_border_size (width, height, border);
1016 }
1017
1018 void
1019 _get_page_size_for_scale_and_rotation (EvDocument *document,
1020                                        gint        page,
1021                                        gdouble     scale,
1022                                        gint        rotation,
1023                                        gint       *page_width,
1024                                        gint       *page_height)
1025 {
1026         gdouble w, h;
1027         gint    width, height;
1028
1029         ev_document_get_page_size (document, page, &w, &h);
1030
1031         width = (gint)(w * scale + 0.5);
1032         height = (gint)(h * scale + 0.5);
1033
1034         if (page_width)
1035                 *page_width = (rotation == 0 || rotation == 180) ? width : height;
1036         if (page_height)
1037                 *page_height = (rotation == 0 || rotation == 180) ? height : width;
1038 }
1039
1040 static void
1041 ev_view_get_page_size (EvView *view,
1042                        gint    page,
1043                        gint   *page_width,
1044                        gint   *page_height)
1045 {
1046         _get_page_size_for_scale_and_rotation (view->document,
1047                                                page,
1048                                                view->scale,
1049                                                view->rotation,
1050                                                page_width,
1051                                                page_height);
1052 }
1053
1054 static void
1055 ev_view_get_max_page_size (EvView *view,
1056                            gint   *max_width,
1057                            gint   *max_height)
1058 {
1059         double w, h;
1060         gint   width, height;
1061
1062         ev_document_get_max_page_size (view->document, &w, &h);
1063
1064         width = (gint)(w * view->scale + 0.5);
1065         height = (gint)(h * view->scale + 0.5);
1066
1067         if (max_width)
1068                 *max_width = (view->rotation == 0 || view->rotation == 180) ? width : height;
1069         if (max_height)
1070                 *max_height = (view->rotation == 0 || view->rotation == 180) ? height : width;
1071 }
1072
1073 static void
1074 get_page_y_offset (EvView *view, int page, int *y_offset)
1075 {
1076         int max_width, offset;
1077         GtkBorder border;
1078
1079         g_return_if_fail (y_offset != NULL);
1080
1081         ev_view_get_max_page_size (view, &max_width, NULL);
1082         compute_border (view, max_width, max_width, &border);
1083
1084         if (view->dual_page) {
1085                 ev_view_get_height_to_page (view, page, NULL, &offset);
1086                 offset += ((page + get_dual_even_left (view)) / 2 + 1) * view->spacing +
1087                         ((page + get_dual_even_left (view)) / 2 ) * (border.top + border.bottom);
1088         } else {
1089                 ev_view_get_height_to_page (view, page, &offset, NULL);
1090                 offset += (page + 1) * view->spacing + page * (border.top + border.bottom);
1091         }
1092
1093         *y_offset = offset;
1094         return;
1095 }
1096
1097 gboolean
1098 ev_view_get_page_extents (EvView       *view,
1099                           gint          page,
1100                           GdkRectangle *page_area,
1101                           GtkBorder    *border)
1102 {
1103         GtkWidget *widget;
1104         int width, height;
1105         GtkAllocation allocation;
1106
1107         widget = GTK_WIDGET (view);
1108         gtk_widget_get_allocation (widget, &allocation);
1109
1110         /* Get the size of the page */
1111         ev_view_get_page_size (view, page, &width, &height);
1112         compute_border (view, width, height, border);
1113         page_area->width = width + border->left + border->right;
1114         page_area->height = height + border->top + border->bottom;
1115
1116         if (view->continuous) {
1117                 gint max_width;
1118                 gint x, y;
1119
1120                 ev_view_get_max_page_size (view, &max_width, NULL);
1121                 max_width = max_width + border->left + border->right;
1122                 /* Get the location of the bounding box */
1123                 if (view->dual_page) {
1124                         x = view->spacing + ((page % 2 == get_dual_even_left (view)) ? 0 : 1) * (max_width + view->spacing);
1125                         x = x + MAX (0, allocation.width - (max_width * 2 + view->spacing * 3)) / 2;
1126                         if (page % 2 == get_dual_even_left (view))
1127                                 x = x + (max_width - width - border->left - border->right);
1128                 } else {
1129                         x = view->spacing;
1130                         x = x + MAX (0, allocation.width - (width + view->spacing * 2)) / 2;
1131                 }
1132
1133                 get_page_y_offset (view, page, &y);
1134
1135                 page_area->x = x;
1136                 page_area->y = y;
1137         } else {
1138                 gint x, y;
1139                 if (view->dual_page) {
1140                         gint width_2, height_2;
1141                         gint max_width = width;
1142                         gint max_height = height;
1143                         GtkBorder overall_border;
1144                         gint other_page;
1145
1146                         other_page = (page % 2 == get_dual_even_left (view)) ? page + 1: page - 1;
1147
1148                         /* First, we get the bounding box of the two pages */
1149                         if (other_page < ev_document_get_n_pages (view->document)
1150                             && (0 <= other_page)) {
1151                                 ev_view_get_page_size (view, other_page,
1152                                                        &width_2, &height_2);
1153                                 if (width_2 > width)
1154                                         max_width = width_2;
1155                                 if (height_2 > height)
1156                                         max_height = height_2;
1157                         }
1158                         compute_border (view, max_width, max_height, &overall_border);
1159
1160                         /* Find the offsets */
1161                         x = view->spacing;
1162                         y = view->spacing;
1163
1164                         /* Adjust for being the left or right page */
1165                         if (page % 2 == get_dual_even_left (view))
1166                                 x = x + max_width - width;
1167                         else
1168                                 x = x + (max_width + overall_border.left + overall_border.right) + view->spacing;
1169
1170                         y = y + (max_height - height)/2;
1171
1172                         /* Adjust for extra allocation */
1173                         x = x + MAX (0, allocation.width -
1174                                      ((max_width + overall_border.left + overall_border.right) * 2 + view->spacing * 3))/2;
1175                         y = y + MAX (0, allocation.height - (height + view->spacing * 2))/2;
1176                 } else {
1177                         x = view->spacing;
1178                         y = view->spacing;
1179
1180                         /* Adjust for extra allocation */
1181                         x = x + MAX (0, allocation.width - (width + border->left + border->right + view->spacing * 2))/2;
1182                         y = y + MAX (0, allocation.height - (height + border->top + border->bottom +  view->spacing * 2))/2;
1183                 }
1184
1185                 page_area->x = x;
1186                 page_area->y = y;
1187         }
1188
1189         return TRUE;
1190 }
1191
1192 static void
1193 get_doc_page_size (EvView  *view,
1194                    gint     page,
1195                    gdouble *width,
1196                    gdouble *height)
1197 {
1198         double w, h;
1199
1200         ev_document_get_page_size (view->document, page, &w, &h);
1201         if (view->rotation == 0 || view->rotation == 180) {
1202                 if (width) *width = w;
1203                 if (height) *height = h;
1204         } else {
1205                 if (width) *width = h;
1206                 if (height) *height = w;
1207         }
1208 }
1209
1210 static void
1211 view_point_to_doc_point (EvView *view,
1212                          GdkPoint *view_point,
1213                          GdkRectangle *page_area,
1214                          double  *doc_point_x,
1215                          double  *doc_point_y)
1216 {
1217         *doc_point_x = (double) (view_point->x - page_area->x) / view->scale;
1218         *doc_point_y = (double) (view_point->y - page_area->y) / view->scale;
1219 }
1220
1221 static void
1222 view_rect_to_doc_rect (EvView *view,
1223                        GdkRectangle *view_rect,
1224                        GdkRectangle *page_area,
1225                        EvRectangle  *doc_rect)
1226 {
1227         doc_rect->x1 = (double) (view_rect->x - page_area->x) / view->scale;
1228         doc_rect->y1 = (double) (view_rect->y - page_area->y) / view->scale;
1229         doc_rect->x2 = doc_rect->x1 + (double) view_rect->width / view->scale;
1230         doc_rect->y2 = doc_rect->y1 + (double) view_rect->height / view->scale;
1231 }
1232
1233 static void
1234 doc_point_to_view_point (EvView       *view,
1235                          int           page,
1236                          EvPoint      *doc_point,
1237                          GdkPoint     *view_point)
1238 {
1239         GdkRectangle page_area;
1240         GtkBorder border;
1241         double x, y, view_x, view_y;
1242         gdouble width, height;
1243
1244         get_doc_page_size (view, page, &width, &height);
1245
1246         if (view->rotation == 0) {
1247                 x = doc_point->x;
1248                 y = doc_point->y;
1249         } else if (view->rotation == 90) {
1250                 x = width - doc_point->y;
1251                 y = doc_point->x;
1252         } else if (view->rotation == 180) {
1253                 x = width - doc_point->x;
1254                 y = height - doc_point->y;
1255         } else if (view->rotation == 270) {
1256                 x = doc_point->y;
1257                 y = height - doc_point->x;
1258         } else {
1259                 g_assert_not_reached ();
1260         }
1261
1262         ev_view_get_page_extents (view, page, &page_area, &border);
1263
1264         view_x = CLAMP (x * view->scale, 0, page_area.width);
1265         view_y = CLAMP (y * view->scale, 0, page_area.height);
1266         view_point->x = view_x + page_area.x;
1267         view_point->y = view_y + page_area.y;
1268 }
1269
1270 static void
1271 doc_rect_to_view_rect (EvView       *view,
1272                        int           page,
1273                        EvRectangle  *doc_rect,
1274                        GdkRectangle *view_rect)
1275 {
1276         GdkRectangle page_area;
1277         GtkBorder border;
1278         double x, y, w, h;
1279         gdouble width, height;
1280
1281         get_doc_page_size (view, page, &width, &height);
1282
1283         if (view->rotation == 0) {
1284                 x = doc_rect->x1;
1285                 y = doc_rect->y1;
1286                 w = doc_rect->x2 - doc_rect->x1;
1287                 h = doc_rect->y2 - doc_rect->y1;
1288         } else if (view->rotation == 90) {
1289                 x = width - doc_rect->y2;
1290                 y = doc_rect->x1;
1291                 w = doc_rect->y2 - doc_rect->y1;
1292                 h = doc_rect->x2 - doc_rect->x1;
1293         } else if (view->rotation == 180) {
1294                 x = width - doc_rect->x2;
1295                 y = height - doc_rect->y2;
1296                 w = doc_rect->x2 - doc_rect->x1;
1297                 h = doc_rect->y2 - doc_rect->y1;
1298         } else if (view->rotation == 270) {
1299                 x = doc_rect->y1;
1300                 y = height - doc_rect->x2;
1301                 w = doc_rect->y2 - doc_rect->y1;
1302                 h = doc_rect->x2 - doc_rect->x1;
1303         } else {
1304                 g_assert_not_reached ();
1305         }
1306
1307         ev_view_get_page_extents (view, page, &page_area, &border);
1308
1309         view_rect->x = x * view->scale + page_area.x;
1310         view_rect->y = y * view->scale + page_area.y;
1311         view_rect->width = w * view->scale;
1312         view_rect->height = h * view->scale;
1313 }
1314
1315 static gboolean
1316 get_dual_even_left (EvView *view)
1317 {
1318         return (ev_document_get_n_pages (view->document) > 2);
1319 }
1320
1321 static void
1322 find_page_at_location (EvView  *view,
1323                        gdouble  x,
1324                        gdouble  y,
1325                        gint    *page,
1326                        gint    *x_offset,
1327                        gint    *y_offset)
1328 {
1329         int i;
1330
1331         if (view->document == NULL)
1332                 return;
1333
1334         g_assert (page);
1335         g_assert (x_offset);
1336         g_assert (y_offset);
1337
1338         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
1339                 GdkRectangle page_area;
1340                 GtkBorder border;
1341
1342                 if (! ev_view_get_page_extents (view, i, &page_area, &border))
1343                         continue;
1344
1345                 if ((x >= page_area.x + border.left) &&
1346                     (x < page_area.x + page_area.width - border.right) &&
1347                     (y >= page_area.y + border.top) &&
1348                     (y < page_area.y + page_area.height - border.bottom)) {
1349                         *page = i;
1350                         *x_offset = x - (page_area.x + border.left);
1351                         *y_offset = y - (page_area.y + border.top);
1352                         return;
1353                 }
1354         }
1355
1356         *page = -1;
1357 }
1358
1359 static gboolean
1360 location_in_text (EvView  *view,
1361                   gdouble  x,
1362                   gdouble  y)
1363 {
1364         cairo_region_t *region;
1365         gint page = -1;
1366         gint x_offset = 0, y_offset = 0;
1367
1368         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1369
1370         if (page == -1)
1371                 return FALSE;
1372
1373         region = ev_page_cache_get_text_mapping (view->page_cache, page);
1374
1375         if (region)
1376                 return cairo_region_contains_point (region, x_offset / view->scale, y_offset / view->scale);
1377         else
1378                 return FALSE;
1379 }
1380
1381 static gboolean
1382 location_in_selected_text (EvView  *view,
1383                            gdouble  x,
1384                            gdouble  y)
1385 {
1386         gint page = -1;
1387         gint x_offset = 0, y_offset = 0;
1388         EvViewSelection *selection;
1389         GList *l = NULL;
1390
1391         for (l = view->selection_info.selections; l != NULL; l = l->next) {
1392                 selection = (EvViewSelection *)l->data;
1393
1394                 find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
1395
1396                 if (page != selection->page)
1397                         continue;
1398
1399                 if (selection->covered_region &&
1400                     cairo_region_contains_point (selection->covered_region, x_offset, y_offset))
1401                         return TRUE;
1402         }
1403
1404         return FALSE;
1405 }
1406
1407 static gboolean
1408 get_doc_point_from_offset (EvView *view,
1409                            gint    page,
1410                            gint    x_offset,
1411                            gint    y_offset,
1412                            gint   *x_new,
1413                            gint   *y_new)
1414 {
1415         gdouble width, height;
1416         double x, y;
1417
1418         get_doc_page_size (view, page, &width, &height);
1419
1420         x_offset = x_offset / view->scale;
1421         y_offset = y_offset / view->scale;
1422
1423         if (view->rotation == 0) {
1424                 x = x_offset;
1425                 y = y_offset;
1426         } else if (view->rotation == 90) {
1427                 x = y_offset;
1428                 y = width - x_offset;
1429         } else if (view->rotation == 180) {
1430                 x = width - x_offset;
1431                 y = height - y_offset;
1432         } else if (view->rotation == 270) {
1433                 x = height - y_offset;
1434                 y = x_offset;
1435         } else {
1436                 g_assert_not_reached ();
1437         }
1438
1439         *x_new = x;
1440         *y_new = y;
1441
1442         return TRUE;
1443 }
1444
1445 static gboolean
1446 get_doc_point_from_location (EvView  *view,
1447                              gdouble  x,
1448                              gdouble  y,
1449                              gint    *page,
1450                              gint    *x_new,
1451                              gint    *y_new)
1452 {
1453         gint x_offset = 0, y_offset = 0;
1454
1455         x += view->scroll_x;
1456         y += view->scroll_y;
1457         find_page_at_location (view, x, y, page, &x_offset, &y_offset);
1458         if (*page == -1)
1459                 return FALSE;
1460
1461         return get_doc_point_from_offset (view, *page, x_offset, y_offset, x_new, y_new);
1462 }
1463
1464 static void
1465 ev_view_get_area_from_mapping (EvView       *view,
1466                                guint         page,
1467                                GList        *mapping_list,
1468                                gconstpointer data,
1469                                GdkRectangle *area)
1470 {
1471         EvMapping *mapping;
1472
1473         mapping = ev_mapping_list_find (mapping_list, data);
1474         doc_rect_to_view_rect (view, page, &mapping->area, area);
1475         area->x -= view->scroll_x;
1476         area->y -= view->scroll_y;
1477 }
1478
1479
1480 /*** Hyperref ***/
1481 static EvLink *
1482 ev_view_get_link_at_location (EvView  *view,
1483                               gdouble  x,
1484                               gdouble  y)
1485 {
1486         gint page = -1;
1487         gint x_new = 0, y_new = 0;
1488         GList *link_mapping;
1489
1490         if (!EV_IS_DOCUMENT_LINKS (view->document))
1491                 return NULL;
1492
1493         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1494                 return NULL;
1495
1496         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
1497
1498         if (link_mapping)
1499                 return ev_mapping_list_get_data (link_mapping, x_new, y_new);
1500         else
1501                 return NULL;
1502 }
1503
1504 static void
1505 goto_fitr_dest (EvView *view, EvLinkDest *dest)
1506 {
1507         EvPoint doc_point;
1508         gdouble zoom, left, top;
1509         gboolean change_left, change_top;
1510         GtkAllocation allocation;
1511
1512         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1513
1514         left = ev_link_dest_get_left (dest, &change_left);
1515         top = ev_link_dest_get_top (dest, &change_top);
1516
1517         zoom = zoom_for_size_best_fit (ev_link_dest_get_right (dest) - left,
1518                                        ev_link_dest_get_bottom (dest) - top,
1519                                        allocation.width,
1520                                        allocation.height);
1521
1522         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1523         ev_document_model_set_scale (view->model, zoom);
1524
1525         doc_point.x = change_left ? left : 0;
1526         doc_point.y = change_top ? top : 0;
1527         view->pending_point = doc_point;
1528
1529         ev_view_change_page (view, ev_link_dest_get_page (dest));
1530 }
1531
1532 static void
1533 goto_fitv_dest (EvView *view, EvLinkDest *dest)
1534 {
1535         EvPoint doc_point;
1536         gdouble doc_width, doc_height;
1537         gint page;
1538         double zoom, left;
1539         gboolean change_left;
1540         GtkAllocation allocation;
1541
1542         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1543
1544         page = ev_link_dest_get_page (dest);
1545         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1546
1547         left = ev_link_dest_get_left (dest, &change_left);
1548         doc_point.x = change_left ? left : 0;
1549         doc_point.y = 0;
1550
1551         zoom = zoom_for_size_fit_height (doc_width - doc_point.x , doc_height,
1552                                          allocation.width,
1553                                          allocation.height);
1554
1555         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1556         ev_document_model_set_scale (view->model, zoom);
1557
1558         view->pending_point = doc_point;
1559
1560         ev_view_change_page (view, page);
1561 }
1562
1563 static void
1564 goto_fith_dest (EvView *view, EvLinkDest *dest)
1565 {
1566         EvPoint doc_point;
1567         gdouble doc_width, doc_height;
1568         gint page;
1569         gdouble zoom, top;
1570         gboolean change_top;
1571         GtkAllocation allocation;
1572
1573         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1574
1575         page = ev_link_dest_get_page (dest);
1576         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1577
1578         top = ev_link_dest_get_top (dest, &change_top);
1579
1580         doc_point.x = 0;
1581         doc_point.y = change_top ? top : 0;
1582
1583         zoom = zoom_for_size_fit_width (doc_width, top,
1584                                         allocation.width,
1585                                         allocation.height);
1586
1587         ev_document_model_set_sizing_mode (view->model, EV_SIZING_FIT_WIDTH);
1588         ev_document_model_set_scale (view->model, zoom);
1589
1590         view->pending_point = doc_point;
1591
1592         ev_view_change_page (view, page);
1593 }
1594
1595 static void
1596 goto_fit_dest (EvView *view, EvLinkDest *dest)
1597 {
1598         double zoom;
1599         gdouble doc_width, doc_height;
1600         int page;
1601         GtkAllocation allocation;
1602
1603         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
1604
1605         page = ev_link_dest_get_page (dest);
1606         ev_document_get_page_size (view->document, page, &doc_width, &doc_height);
1607
1608         zoom = zoom_for_size_best_fit (doc_width, doc_height,
1609                                        allocation.width,
1610                                        allocation.height);
1611
1612         ev_document_model_set_sizing_mode (view->model, EV_SIZING_BEST_FIT);
1613         ev_document_model_set_scale (view->model, zoom);
1614
1615         ev_view_change_page (view, page);
1616 }
1617
1618 static void
1619 goto_xyz_dest (EvView *view, EvLinkDest *dest)
1620 {
1621         EvPoint doc_point;
1622         gint page;
1623         gdouble zoom, left, top;
1624         gboolean change_zoom, change_left, change_top;
1625
1626         zoom = ev_link_dest_get_zoom (dest, &change_zoom);
1627         page = ev_link_dest_get_page (dest);
1628
1629         if (change_zoom && zoom > 1) {
1630                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
1631                 ev_document_model_set_scale (view->model, zoom);
1632         }
1633
1634         left = ev_link_dest_get_left (dest, &change_left);
1635         top = ev_link_dest_get_top (dest, &change_top);
1636
1637         doc_point.x = change_left ? left : 0;
1638         doc_point.y = change_top ? top : 0;
1639         view->pending_point = doc_point;
1640
1641         ev_view_change_page (view, page);
1642 }
1643
1644 static void
1645 goto_dest (EvView *view, EvLinkDest *dest)
1646 {
1647         EvLinkDestType type;
1648         int page, n_pages, current_page;
1649
1650         page = ev_link_dest_get_page (dest);
1651         n_pages = ev_document_get_n_pages (view->document);
1652
1653         if (page < 0 || page >= n_pages)
1654                 return;
1655
1656         current_page = view->current_page;
1657
1658         type = ev_link_dest_get_dest_type (dest);
1659
1660         switch (type) {
1661                 case EV_LINK_DEST_TYPE_PAGE:
1662                         ev_document_model_set_page (view->model, page);
1663                         break;
1664                 case EV_LINK_DEST_TYPE_FIT:
1665                         goto_fit_dest (view, dest);
1666                         break;
1667                 case EV_LINK_DEST_TYPE_FITH:
1668                         goto_fith_dest (view, dest);
1669                         break;
1670                 case EV_LINK_DEST_TYPE_FITV:
1671                         goto_fitv_dest (view, dest);
1672                         break;
1673                 case EV_LINK_DEST_TYPE_FITR:
1674                         goto_fitr_dest (view, dest);
1675                         break;
1676                 case EV_LINK_DEST_TYPE_XYZ:
1677                         goto_xyz_dest (view, dest);
1678                         break;
1679                 case EV_LINK_DEST_TYPE_PAGE_LABEL:
1680                         ev_document_model_set_page_by_label (view->model, ev_link_dest_get_page_label (dest));
1681                         break;
1682                 default:
1683                         g_assert_not_reached ();
1684         }
1685
1686         if (current_page != view->current_page)
1687                 ev_document_model_set_page (view->model, view->current_page);
1688 }
1689
1690 static void
1691 ev_view_goto_dest (EvView *view, EvLinkDest *dest)
1692 {
1693         EvLinkDestType type;
1694
1695         type = ev_link_dest_get_dest_type (dest);
1696
1697         if (type == EV_LINK_DEST_TYPE_NAMED) {
1698                 EvLinkDest  *dest2;
1699                 const gchar *named_dest;
1700
1701                 named_dest = ev_link_dest_get_named_dest (dest);
1702                 dest2 = ev_document_links_find_link_dest (EV_DOCUMENT_LINKS (view->document),
1703                                                           named_dest);
1704                 if (dest2) {
1705                         goto_dest (view, dest2);
1706                         g_object_unref (dest2);
1707                 }
1708
1709                 return;
1710         }
1711
1712         goto_dest (view, dest);
1713 }
1714
1715 void
1716 ev_view_handle_link (EvView *view, EvLink *link)
1717 {
1718         EvLinkAction    *action = NULL;
1719         EvLinkActionType type;
1720
1721         action = ev_link_get_action (link);
1722         if (!action)
1723                 return;
1724
1725         type = ev_link_action_get_action_type (action);
1726
1727         switch (type) {
1728                 case EV_LINK_ACTION_TYPE_GOTO_DEST: {
1729                         EvLinkDest *dest;
1730
1731                         g_signal_emit (view, signals[SIGNAL_HANDLE_LINK], 0, link);
1732
1733                         dest = ev_link_action_get_dest (action);
1734                         ev_view_goto_dest (view, dest);
1735                 }
1736                         break;
1737                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1738                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1739                 case EV_LINK_ACTION_TYPE_LAUNCH:
1740                 case EV_LINK_ACTION_TYPE_NAMED:
1741                         g_signal_emit (view, signals[SIGNAL_EXTERNAL_LINK], 0, action);
1742                         break;
1743         }
1744 }
1745
1746 static char *
1747 tip_from_action_named (EvLinkAction *action)
1748 {
1749         const gchar *name = ev_link_action_get_name (action);
1750
1751         if (g_ascii_strcasecmp (name, "FirstPage") == 0) {
1752                 return g_strdup (_("Go to first page"));
1753         } else if (g_ascii_strcasecmp (name, "PrevPage") == 0) {
1754                 return g_strdup (_("Go to previous page"));
1755         } else if (g_ascii_strcasecmp (name, "NextPage") == 0) {
1756                 return g_strdup (_("Go to next page"));
1757         } else if (g_ascii_strcasecmp (name, "LastPage") == 0) {
1758                 return g_strdup (_("Go to last page"));
1759         } else if (g_ascii_strcasecmp (name, "GoToPage") == 0) {
1760                 return g_strdup (_("Go to page"));
1761         } else if (g_ascii_strcasecmp (name, "Find") == 0) {
1762                 return g_strdup (_("Find"));
1763         }
1764
1765         return NULL;
1766 }
1767
1768 static char *
1769 tip_from_link (EvView *view, EvLink *link)
1770 {
1771         EvLinkAction *action;
1772         EvLinkActionType type;
1773         char *msg = NULL;
1774         char *page_label;
1775         const char *title;
1776
1777         action = ev_link_get_action (link);
1778         title = ev_link_get_title (link);
1779
1780         if (!action)
1781                 return title ? g_strdup (title) : NULL;
1782
1783         type = ev_link_action_get_action_type (action);
1784
1785         switch (type) {
1786                 case EV_LINK_ACTION_TYPE_GOTO_DEST:
1787                         page_label = ev_document_links_get_dest_page_label (EV_DOCUMENT_LINKS (view->document),
1788                                                                             ev_link_action_get_dest (action));
1789                         if (page_label) {
1790                                 msg = g_strdup_printf (_("Go to page %s"), page_label);
1791                                 g_free (page_label);
1792                         }
1793                         break;
1794                 case EV_LINK_ACTION_TYPE_GOTO_REMOTE:
1795                         if (title) {
1796                                 msg = g_strdup_printf (_("Go to %s on file “%s”"), title,
1797                                                        ev_link_action_get_filename (action));
1798                         } else {
1799                                 msg = g_strdup_printf (_("Go to file “%s”"),
1800                                                        ev_link_action_get_filename (action));
1801                         }
1802                         break;
1803                 case EV_LINK_ACTION_TYPE_EXTERNAL_URI:
1804                         msg = g_strdup (ev_link_action_get_uri (action));
1805                         break;
1806                 case EV_LINK_ACTION_TYPE_LAUNCH:
1807                         msg = g_strdup_printf (_("Launch %s"),
1808                                                ev_link_action_get_filename (action));
1809                         break;
1810                 case EV_LINK_ACTION_TYPE_NAMED:
1811                         msg = tip_from_action_named (action);
1812                         break;
1813                 default:
1814                         if (title)
1815                                 msg = g_strdup (title);
1816                         break;
1817         }
1818
1819         return msg;
1820 }
1821
1822 static void
1823 ev_view_handle_cursor_over_xy (EvView *view, gint x, gint y)
1824 {
1825         EvLink       *link;
1826         EvFormField  *field;
1827         EvAnnotation *annot = NULL;
1828
1829         if (view->cursor == EV_VIEW_CURSOR_HIDDEN)
1830                 return;
1831
1832         if (view->drag_info.in_drag) {
1833                 if (view->cursor != EV_VIEW_CURSOR_DRAG)
1834                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
1835                 return;
1836         }
1837
1838         if (view->scroll_info.autoscrolling) {
1839                 if (view->cursor != EV_VIEW_CURSOR_AUTOSCROLL)
1840                         ev_view_set_cursor (view, EV_VIEW_CURSOR_AUTOSCROLL);
1841                 return;
1842         }
1843
1844         link = ev_view_get_link_at_location (view, x, y);
1845         if (link) {
1846                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1847         } else if ((field = ev_view_get_form_field_at_location (view, x, y))) {
1848                 if (field->is_read_only) {
1849                         if (view->cursor == EV_VIEW_CURSOR_LINK ||
1850                             view->cursor == EV_VIEW_CURSOR_IBEAM ||
1851                             view->cursor == EV_VIEW_CURSOR_DRAG)
1852                                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1853                 } else if (EV_IS_FORM_FIELD_TEXT (field)) {
1854                         ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1855                 } else {
1856                         ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1857                 }
1858         } else if ((annot = ev_view_get_annotation_at_location (view, x, y))) {
1859                 ev_view_set_cursor (view, EV_VIEW_CURSOR_LINK);
1860         } else if (location_in_text (view, x + view->scroll_x, y + view->scroll_y)) {
1861                 ev_view_set_cursor (view, EV_VIEW_CURSOR_IBEAM);
1862         } else {
1863                 if (view->cursor == EV_VIEW_CURSOR_LINK ||
1864                     view->cursor == EV_VIEW_CURSOR_IBEAM ||
1865                     view->cursor == EV_VIEW_CURSOR_DRAG ||
1866                     view->cursor == EV_VIEW_CURSOR_AUTOSCROLL)
1867                         ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
1868         }
1869
1870         if (link || annot)
1871                 g_object_set (view, "has-tooltip", TRUE, NULL);
1872 }
1873
1874 /*** Images ***/
1875 static EvImage *
1876 ev_view_get_image_at_location (EvView  *view,
1877                                gdouble  x,
1878                                gdouble  y)
1879 {
1880         gint page = -1;
1881         gint x_new = 0, y_new = 0;
1882         GList *image_mapping;
1883
1884         if (!EV_IS_DOCUMENT_IMAGES (view->document))
1885                 return NULL;
1886
1887         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1888                 return NULL;
1889
1890         image_mapping = ev_page_cache_get_image_mapping (view->page_cache, page);
1891
1892         if (image_mapping)
1893                 return ev_mapping_list_get_data (image_mapping, x_new, y_new);
1894         else
1895                 return NULL;
1896 }
1897
1898 /*** Forms ***/
1899 static EvFormField *
1900 ev_view_get_form_field_at_location (EvView  *view,
1901                                     gdouble  x,
1902                                     gdouble  y)
1903 {
1904         gint page = -1;
1905         gint x_new = 0, y_new = 0;
1906         GList *forms_mapping;
1907
1908         if (!EV_IS_DOCUMENT_FORMS (view->document))
1909                 return NULL;
1910
1911         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
1912                 return NULL;
1913
1914         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache, page);
1915
1916         if (forms_mapping)
1917                 return ev_mapping_list_get_data (forms_mapping, x_new, y_new);
1918         else
1919                 return NULL;
1920 }
1921
1922 static cairo_region_t *
1923 ev_view_form_field_get_region (EvView      *view,
1924                                EvFormField *field)
1925 {
1926         GdkRectangle view_area;
1927         GList       *forms_mapping;
1928
1929         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
1930                                                               field->page->index);
1931         ev_view_get_area_from_mapping (view, field->page->index,
1932                                        forms_mapping,
1933                                        field, &view_area);
1934
1935         return cairo_region_create_rectangle (&view_area);
1936 }
1937
1938 static gboolean
1939 ev_view_forms_remove_widgets (EvView *view)
1940 {
1941         ev_view_remove_all (view);
1942
1943         return FALSE;
1944 }
1945
1946 static void
1947 ev_view_form_field_destroy (GtkWidget *widget,
1948                             EvView    *view)
1949 {
1950         g_idle_add ((GSourceFunc)ev_view_forms_remove_widgets, view);
1951 }
1952
1953 static GtkWidget *
1954 ev_view_form_field_button_create_widget (EvView      *view,
1955                                          EvFormField *field)
1956 {
1957         EvFormFieldButton *field_button = EV_FORM_FIELD_BUTTON (field);
1958         cairo_region_t    *field_region = NULL;
1959
1960         switch (field_button->type) {
1961                 case EV_FORM_FIELD_BUTTON_PUSH:
1962                         return NULL;
1963                 case EV_FORM_FIELD_BUTTON_CHECK:
1964                 case EV_FORM_FIELD_BUTTON_RADIO: {
1965                         gboolean  state;
1966                         GList    *forms_mapping, *l;
1967
1968                         state = ev_document_forms_form_field_button_get_state (EV_DOCUMENT_FORMS (view->document),
1969                                                                                field);
1970
1971                         /* FIXME: it actually depends on NoToggleToOff flags */
1972                         if (field_button->type == EV_FORM_FIELD_BUTTON_RADIO &&
1973                             state && field_button->state)
1974                                 return NULL;
1975
1976                         field_region = ev_view_form_field_get_region (view, field);
1977
1978                         /* For radio buttons and checkbox buttons that are in a set
1979                          * we need to update also the region for the current selected item
1980                          */
1981                         forms_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
1982                                                                               field->page->index);
1983                         for (l = forms_mapping; l; l = g_list_next (l)) {
1984                                 EvFormField *button = ((EvMapping *)(l->data))->data;
1985                                 cairo_region_t *button_region;
1986
1987                                 if (button->id == field->id)
1988                                         continue;
1989
1990                                 /* FIXME: only buttons in the same group should be updated */
1991                                 if (!EV_IS_FORM_FIELD_BUTTON (button) ||
1992                                     EV_FORM_FIELD_BUTTON (button)->type != field_button->type ||
1993                                     EV_FORM_FIELD_BUTTON (button)->state != TRUE)
1994                                         continue;
1995
1996                                 button_region = ev_view_form_field_get_region (view, button);
1997                                 cairo_region_union (field_region, button_region);
1998                                 cairo_region_destroy (button_region);
1999                         }
2000
2001                         ev_document_forms_form_field_button_set_state (EV_DOCUMENT_FORMS (view->document),
2002                                                                        field, !state);
2003                         field_button->state = !state;
2004                 }
2005                         break;
2006         }
2007
2008         ev_view_reload_page (view, field->page->index, field_region);
2009         cairo_region_destroy (field_region);
2010
2011         return NULL;
2012 }
2013
2014 static void
2015 ev_view_form_field_text_save (EvView    *view,
2016                               GtkWidget *widget)
2017 {
2018         EvFormField *field;
2019
2020         if (!view->document)
2021                 return;
2022
2023         field = g_object_get_data (G_OBJECT (widget), "form-field");
2024
2025         if (field->changed) {
2026                 EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2027                 cairo_region_t  *field_region;
2028
2029                 field_region = ev_view_form_field_get_region (view, field);
2030
2031                 ev_document_forms_form_field_text_set_text (EV_DOCUMENT_FORMS (view->document),
2032                                                             field, field_text->text);
2033                 field->changed = FALSE;
2034                 ev_view_reload_page (view, field->page->index, field_region);
2035                 cairo_region_destroy (field_region);
2036         }
2037 }
2038
2039 static void
2040 ev_view_form_field_text_changed (GtkWidget   *widget,
2041                                  EvFormField *field)
2042 {
2043         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2044         gchar           *text = NULL;
2045
2046         if (GTK_IS_ENTRY (widget)) {
2047                 text = g_strdup (gtk_entry_get_text (GTK_ENTRY (widget)));
2048         } else if (GTK_IS_TEXT_BUFFER (widget)) {
2049                 GtkTextIter start, end;
2050
2051                 gtk_text_buffer_get_bounds (GTK_TEXT_BUFFER (widget), &start, &end);
2052                 text = gtk_text_buffer_get_text (GTK_TEXT_BUFFER (widget),
2053                                                  &start, &end, FALSE);
2054         }
2055
2056         if (!field_text->text ||
2057             (field_text->text && g_ascii_strcasecmp (field_text->text, text) != 0)) {
2058                 g_free (field_text->text);
2059                 field_text->text = text;
2060                 field->changed = TRUE;
2061         }
2062 }
2063
2064 static GtkWidget *
2065 ev_view_form_field_text_create_widget (EvView      *view,
2066                                        EvFormField *field)
2067 {
2068         EvFormFieldText *field_text = EV_FORM_FIELD_TEXT (field);
2069         GtkWidget       *text = NULL;
2070         gchar           *txt;
2071
2072         txt = ev_document_forms_form_field_text_get_text (EV_DOCUMENT_FORMS (view->document),
2073                                                           field);
2074
2075         switch (field_text->type) {
2076                 case EV_FORM_FIELD_TEXT_FILE_SELECT:
2077                         /* TODO */
2078                 case EV_FORM_FIELD_TEXT_NORMAL:
2079                         text = gtk_entry_new ();
2080                         gtk_entry_set_has_frame (GTK_ENTRY (text), FALSE);
2081                         gtk_entry_set_max_length (GTK_ENTRY (text), field_text->max_len);
2082                         gtk_entry_set_visibility (GTK_ENTRY (text), !field_text->is_password);
2083
2084                         if (txt) {
2085                                 gtk_entry_set_text (GTK_ENTRY (text), txt);
2086                                 g_free (txt);
2087                         }
2088
2089                         g_signal_connect (text, "changed",
2090                                           G_CALLBACK (ev_view_form_field_text_changed),
2091                                           field);
2092                         g_signal_connect_after (text, "activate",
2093                                                 G_CALLBACK (ev_view_form_field_destroy),
2094                                                 view);
2095                         break;
2096                 case EV_FORM_FIELD_TEXT_MULTILINE: {
2097                         GtkTextBuffer *buffer;
2098
2099                         text = gtk_text_view_new ();
2100                         buffer = gtk_text_view_get_buffer (GTK_TEXT_VIEW (text));
2101
2102                         if (txt) {
2103                                 gtk_text_buffer_set_text (buffer, txt, -1);
2104                                 g_free (txt);
2105                         }
2106
2107                         g_signal_connect (buffer, "changed",
2108                                           G_CALLBACK (ev_view_form_field_text_changed),
2109                                           field);
2110                 }
2111                         break;
2112         }
2113
2114         g_object_weak_ref (G_OBJECT (text),
2115                            (GWeakNotify)ev_view_form_field_text_save,
2116                            view);
2117
2118         return text;
2119 }
2120
2121 static void
2122 ev_view_form_field_choice_save (EvView    *view,
2123                                 GtkWidget *widget)
2124 {
2125         EvFormField *field;
2126
2127         if (!view->document)
2128                 return;
2129
2130         field = g_object_get_data (G_OBJECT (widget), "form-field");
2131
2132         if (field->changed) {
2133                 GList             *l;
2134                 EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2135                 cairo_region_t    *field_region;
2136
2137                 field_region = ev_view_form_field_get_region (view, field);
2138
2139                 if (field_choice->is_editable) {
2140                         ev_document_forms_form_field_choice_set_text (EV_DOCUMENT_FORMS (view->document),
2141                                                                       field, field_choice->text);
2142                 } else {
2143                         ev_document_forms_form_field_choice_unselect_all (EV_DOCUMENT_FORMS (view->document), field);
2144                         for (l = field_choice->selected_items; l; l = g_list_next (l)) {
2145                                 ev_document_forms_form_field_choice_select_item (EV_DOCUMENT_FORMS (view->document),
2146                                                                                  field,
2147                                                                                  GPOINTER_TO_INT (l->data));
2148                         }
2149                 }
2150                 field->changed = FALSE;
2151                 ev_view_reload_page (view, field->page->index, field_region);
2152                 cairo_region_destroy (field_region);
2153         }
2154 }
2155
2156 static void
2157 ev_view_form_field_choice_changed (GtkWidget   *widget,
2158                                    EvFormField *field)
2159 {
2160         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2161
2162         if (GTK_IS_COMBO_BOX (widget)) {
2163                 gint item;
2164
2165                 item = gtk_combo_box_get_active (GTK_COMBO_BOX (widget));
2166                 if (!field_choice->selected_items ||
2167                     GPOINTER_TO_INT (field_choice->selected_items->data) != item) {
2168                         g_list_free (field_choice->selected_items);
2169                         field_choice->selected_items = NULL;
2170                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2171                                                                        GINT_TO_POINTER (item));
2172                         field->changed = TRUE;
2173                 }
2174
2175                 if (GTK_IS_COMBO_BOX_ENTRY (widget)) {
2176                         gchar *text;
2177
2178                         text = gtk_combo_box_get_active_text (GTK_COMBO_BOX (widget));
2179                         if (!field_choice->text ||
2180                             (field_choice->text && g_ascii_strcasecmp (field_choice->text, text) != 0)) {
2181                                 g_free (field_choice->text);
2182                                 field_choice->text = text;
2183                                 field->changed = TRUE;
2184                         }
2185                 }
2186         } else if (GTK_IS_TREE_SELECTION (widget)) {
2187                 GtkTreeSelection *selection = GTK_TREE_SELECTION (widget);
2188                 GtkTreeModel     *model;
2189                 GList            *items, *l;
2190
2191                 items = gtk_tree_selection_get_selected_rows (selection, &model);
2192                 g_list_free (field_choice->selected_items);
2193                 field_choice->selected_items = NULL;
2194
2195                 for (l = items; l && l->data; l = g_list_next (l)) {
2196                         GtkTreeIter  iter;
2197                         GtkTreePath *path = (GtkTreePath *)l->data;
2198                         gint         item;
2199
2200                         gtk_tree_model_get_iter (model, &iter, path);
2201                         gtk_tree_model_get (model, &iter, 1, &item, -1);
2202
2203                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2204                                                                        GINT_TO_POINTER (item));
2205
2206                         gtk_tree_path_free (path);
2207                 }
2208
2209                 g_list_free (items);
2210
2211                 field->changed = TRUE;
2212         }
2213 }
2214
2215 static GtkWidget *
2216 ev_view_form_field_choice_create_widget (EvView      *view,
2217                                          EvFormField *field)
2218 {
2219         EvFormFieldChoice *field_choice = EV_FORM_FIELD_CHOICE (field);
2220         GtkWidget         *choice;
2221         GtkTreeModel      *model;
2222         gint               n_items, i;
2223         gint               selected_item = 0;
2224
2225         n_items = ev_document_forms_form_field_choice_get_n_items (EV_DOCUMENT_FORMS (view->document),
2226                                                                    field);
2227         model = GTK_TREE_MODEL (gtk_list_store_new (2, G_TYPE_STRING, G_TYPE_INT));
2228         for (i = 0; i < n_items; i++) {
2229                 GtkTreeIter iter;
2230                 gchar      *item;
2231
2232                 item = ev_document_forms_form_field_choice_get_item (EV_DOCUMENT_FORMS (view->document),
2233                                                                      field, i);
2234                 if (ev_document_forms_form_field_choice_is_item_selected (
2235                             EV_DOCUMENT_FORMS (view->document), field, i)) {
2236                         selected_item = i;
2237                         /* FIXME: we need a get_selected_items function in poppler */
2238                         field_choice->selected_items = g_list_prepend (field_choice->selected_items,
2239                                                                        GINT_TO_POINTER (i));
2240                 }
2241
2242                 if (item) {
2243                         gtk_list_store_append (GTK_LIST_STORE (model), &iter);
2244                         gtk_list_store_set (GTK_LIST_STORE (model), &iter,
2245                                             0, item,
2246                                             1, i,
2247                                             -1);
2248                         g_free (item);
2249                 }
2250         }
2251
2252         if (field_choice->type == EV_FORM_FIELD_CHOICE_LIST) {
2253                 GtkCellRenderer  *renderer;
2254                 GtkWidget        *tree_view;
2255                 GtkTreeSelection *selection;
2256
2257                 tree_view = gtk_tree_view_new_with_model (model);
2258                 gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (tree_view), FALSE);
2259
2260                 selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (tree_view));
2261                 if (field_choice->multi_select) {
2262                         gtk_tree_selection_set_mode (selection, GTK_SELECTION_MULTIPLE);
2263                 }
2264
2265                 /* TODO: set selected items */
2266
2267                 renderer = gtk_cell_renderer_text_new ();
2268                 gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (tree_view),
2269                                                              0,
2270                                                              "choix", renderer,
2271                                                              "text", 0,
2272                                                              NULL);
2273
2274                 choice = gtk_scrolled_window_new (NULL, NULL);
2275                 gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (choice),
2276                                                 GTK_POLICY_AUTOMATIC,
2277                                                 GTK_POLICY_AUTOMATIC);
2278                 gtk_container_add (GTK_CONTAINER (choice), tree_view);
2279                 gtk_widget_show (tree_view);
2280
2281                 g_signal_connect (selection, "changed",
2282                                   G_CALLBACK (ev_view_form_field_choice_changed),
2283                                   field);
2284                 g_signal_connect_after (selection, "changed",
2285                                         G_CALLBACK (ev_view_form_field_destroy),
2286                                         view);
2287         } else if (field_choice->is_editable) { /* ComboBoxEntry */
2288                 gchar *text;
2289
2290                 choice = gtk_combo_box_entry_new_with_model (model, 0);
2291                 text = ev_document_forms_form_field_choice_get_text (EV_DOCUMENT_FORMS (view->document), field);
2292                 if (text) {
2293                         gtk_entry_set_text (GTK_ENTRY (gtk_bin_get_child (GTK_BIN (choice))), text);
2294                         g_free (text);
2295                 }
2296
2297                 g_signal_connect (choice, "changed",
2298                                   G_CALLBACK (ev_view_form_field_choice_changed),
2299                                   field);
2300                 g_signal_connect_after (gtk_bin_get_child (GTK_BIN (choice)),
2301                                         "activate",
2302                                         G_CALLBACK (ev_view_form_field_destroy),
2303                                         view);
2304         } else { /* ComboBoxText */
2305                 GtkCellRenderer *renderer;
2306
2307                 choice = gtk_combo_box_new_with_model (model);
2308                 renderer = gtk_cell_renderer_text_new ();
2309                 gtk_cell_layout_pack_start (GTK_CELL_LAYOUT (choice),
2310                                             renderer, TRUE);
2311                 gtk_cell_layout_set_attributes (GTK_CELL_LAYOUT (choice),
2312                                                 renderer,
2313                                                 "text", 0,
2314                                                 NULL);
2315                 gtk_combo_box_set_active (GTK_COMBO_BOX (choice), selected_item);
2316                 gtk_combo_box_popup (GTK_COMBO_BOX (choice));
2317
2318                 g_signal_connect (choice, "changed",
2319                                   G_CALLBACK (ev_view_form_field_choice_changed),
2320                                   field);
2321                 g_signal_connect_after (choice, "changed",
2322                                         G_CALLBACK (ev_view_form_field_destroy),
2323                                         view);
2324         }
2325
2326         g_object_unref (model);
2327
2328         g_object_weak_ref (G_OBJECT (choice),
2329                            (GWeakNotify)ev_view_form_field_choice_save,
2330                            view);
2331
2332         return choice;
2333 }
2334
2335 static void
2336 ev_view_handle_form_field (EvView      *view,
2337                            EvFormField *field,
2338                            gdouble      x,
2339                            gdouble      y)
2340 {
2341         GtkWidget   *field_widget = NULL;
2342         GList       *form_field_mapping;
2343         GdkRectangle view_area;
2344
2345         if (field->is_read_only)
2346                 return;
2347
2348         if (EV_IS_FORM_FIELD_BUTTON (field)) {
2349                 field_widget = ev_view_form_field_button_create_widget (view, field);
2350         } else if (EV_IS_FORM_FIELD_TEXT (field)) {
2351                 field_widget = ev_view_form_field_text_create_widget (view, field);
2352         } else if (EV_IS_FORM_FIELD_CHOICE (field)) {
2353                 field_widget = ev_view_form_field_choice_create_widget (view, field);
2354         } else if (EV_IS_FORM_FIELD_SIGNATURE (field)) {
2355                 /* TODO */
2356         }
2357
2358         /* Form field doesn't require a widget */
2359         if (!field_widget)
2360                 return;
2361
2362         g_object_set_data_full (G_OBJECT (field_widget), "form-field",
2363                                 g_object_ref (field),
2364                                 (GDestroyNotify)g_object_unref);
2365
2366         form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2367                                                                    field->page->index);
2368         ev_view_get_area_from_mapping (view, field->page->index,
2369                                        form_field_mapping,
2370                                        field, &view_area);
2371
2372         gtk_layout_put (GTK_LAYOUT (view), field_widget, view_area.x, view_area.y);
2373         gtk_widget_show (field_widget);
2374         gtk_widget_grab_focus (field_widget);
2375 }
2376
2377 /* Annotations */
2378 static EvViewWindowChild *
2379 ev_view_get_window_child (EvView    *view,
2380                           GtkWidget *window)
2381 {
2382         GList *children = view->window_children;
2383
2384         while (children) {
2385                 EvViewWindowChild *child;
2386
2387                 child = (EvViewWindowChild *)children->data;
2388                 children = children->next;
2389
2390                 if (child->window == window)
2391                         return child;
2392         }
2393
2394         return NULL;
2395 }
2396
2397 static void
2398 ev_view_window_child_move (EvView            *view,
2399                            EvViewWindowChild *child,
2400                            gint               x,
2401                            gint               y)
2402 {
2403         GtkAllocation allocation;
2404         gint          width, height;
2405
2406         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
2407         gtk_window_get_size (GTK_WINDOW (child->window), &width, &height);
2408
2409         child->x = x;
2410         child->y = y;
2411         gtk_window_move (GTK_WINDOW (child->window),
2412                          CLAMP (x, child->parent_x,
2413                                 child->parent_x + allocation.width - width),
2414                          CLAMP (y, child->parent_y,
2415                                 child->parent_y + allocation.height - height));
2416 }
2417
2418 static void
2419 ev_view_window_child_move_with_parent (EvView    *view,
2420                                        GtkWidget *window)
2421 {
2422         EvViewWindowChild *child;
2423         gint               root_x, root_y;
2424
2425         child = ev_view_get_window_child (view, window);
2426         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2427                                &root_x, &root_y);
2428         if (root_x != child->parent_x || root_y != child->parent_y) {
2429                 gint dest_x, dest_y;
2430
2431                 dest_x = child->x + (root_x - child->parent_x);
2432                 dest_y = child->y + (root_y - child->parent_y);
2433                 child->parent_x = root_x;
2434                 child->parent_y = root_y;
2435                 ev_view_window_child_move (view, child, dest_x, dest_y);
2436         }
2437
2438         if (child->visible && !gtk_widget_get_visible (window))
2439                 gtk_widget_show (window);
2440 }
2441
2442 static void
2443 ev_view_window_child_put (EvView    *view,
2444                           GtkWidget *window,
2445                           guint      page,
2446                           gint       x,
2447                           gint       y,
2448                           gdouble    orig_x,
2449                           gdouble    orig_y)
2450 {
2451         EvViewWindowChild *child;
2452         gint               root_x, root_y;
2453
2454         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2455                                &root_x, &root_y);
2456
2457         child = g_new0 (EvViewWindowChild, 1);
2458         child->window = window;
2459         child->page = page;
2460         child->orig_x = orig_x;
2461         child->orig_y = orig_y;
2462         child->parent_x = root_x;
2463         child->parent_y = root_y;
2464         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2465         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2466
2467         if (child->visible)
2468                 gtk_widget_show (window);
2469         else
2470                 gtk_widget_hide (window);
2471
2472         view->window_children = g_list_append (view->window_children, child);
2473 }
2474
2475 static EvViewWindowChild *
2476 ev_view_find_window_child_for_annot (EvView       *view,
2477                                      guint         page,
2478                                      EvAnnotation *annot)
2479 {
2480         GList *children = view->window_children;
2481
2482         while (children) {
2483                 EvViewWindowChild *child;
2484                 EvAnnotation      *wannot;
2485
2486                 child = (EvViewWindowChild *)children->data;
2487                 children = children->next;
2488
2489                 if (child->page != page)
2490                         continue;
2491
2492                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2493                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2494                         return child;
2495         }
2496
2497         return NULL;
2498 }
2499
2500 static void
2501 ev_view_window_children_free (EvView *view)
2502 {
2503         GList *l;
2504
2505         if (!view->window_children)
2506                 return;
2507
2508         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2509                 EvViewWindowChild *child;
2510
2511                 child = (EvViewWindowChild *)l->data;
2512                 gtk_widget_destroy (GTK_WIDGET (child->window));
2513                 g_free (child);
2514         }
2515         g_list_free (view->window_children);
2516         view->window_children = NULL;
2517         view->window_child_focus = NULL;
2518 }
2519
2520 static void
2521 annotation_window_grab_focus (GtkWidget *widget,
2522                               EvView    *view)
2523 {
2524         if (view->window_child_focus)
2525                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2526         view->window_child_focus = ev_view_get_window_child (view, widget);
2527 }
2528
2529 static void
2530 annotation_window_closed (EvAnnotationWindow *window,
2531                           EvView             *view)
2532 {
2533         EvViewWindowChild *child;
2534
2535         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2536         child->visible = FALSE;
2537 }
2538
2539 static void
2540 annotation_window_moved (EvAnnotationWindow *window,
2541                          gint                x,
2542                          gint                y,
2543                          EvView             *view)
2544 {
2545         EvViewWindowChild *child;
2546         GdkRectangle       page_area;
2547         GtkBorder          border;
2548         GdkRectangle       view_rect;
2549         EvRectangle        doc_rect;
2550         gint               width, height;
2551
2552         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2553         if (child->x == x && child->y == y)
2554                 return;
2555
2556         child->moved = TRUE;
2557         child->x = x;
2558         child->y = y;
2559
2560         /* Window has been moved by the user,
2561          * we have to set a new origin in doc coords
2562          */
2563         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2564         view_rect.x = (x - child->parent_x) + view->scroll_x;
2565         view_rect.y = (y - child->parent_y) + view->scroll_y;
2566         view_rect.width = width;
2567         view_rect.height = height;
2568
2569         ev_view_get_page_extents (view, child->page, &page_area, &border);
2570         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2571         child->orig_x = doc_rect.x1;
2572         child->orig_y = doc_rect.y1;
2573 }
2574
2575 static void
2576 ev_view_annotation_save (EvView       *view,
2577                          EvAnnotation *annot)
2578 {
2579         if (!view->document)
2580                 return;
2581
2582         if (!annot->changed)
2583                 return;
2584
2585         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2586                                                          annot, annot->contents);
2587         annot->changed = FALSE;
2588 }
2589
2590 static void
2591 show_annotation_windows (EvView *view,
2592                          gint    page)
2593 {
2594         GList     *annots, *l;
2595         GtkWindow *parent;
2596
2597         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2598
2599         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2600
2601         for (l = annots; l && l->data; l = g_list_next (l)) {
2602                 EvAnnotation      *annot;
2603                 EvViewWindowChild *child;
2604                 GtkWidget         *window;
2605                 EvRectangle       *doc_rect;
2606                 GdkRectangle       view_rect;
2607
2608                 annot = ((EvMapping *)(l->data))->data;
2609
2610                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2611                         continue;
2612
2613                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2614                         continue;
2615
2616                 window = g_object_get_data (G_OBJECT (annot), "popup");
2617                 if (window) {
2618                         ev_view_window_child_move_with_parent (view, window);
2619                         continue;
2620                 }
2621
2622                 /* Look if we already have a popup for this annot */
2623                 child = ev_view_find_window_child_for_annot (view, page, annot);
2624                 window = child ? child->window : NULL;
2625                 if (window) {
2626                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2627                         g_object_set_data (G_OBJECT (annot), "popup", window);
2628                         ev_view_window_child_move_with_parent (view, window);
2629                 } else {
2630                         window = ev_annotation_window_new (annot, parent);
2631                         g_signal_connect (window, "grab_focus",
2632                                           G_CALLBACK (annotation_window_grab_focus),
2633                                           view);
2634                         g_signal_connect (window, "closed",
2635                                           G_CALLBACK (annotation_window_closed),
2636                                           view);
2637                         g_signal_connect (window, "moved",
2638                                           G_CALLBACK (annotation_window_moved),
2639                                           view);
2640                         g_object_set_data (G_OBJECT (annot), "popup", window);
2641
2642                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2643                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2644                         view_rect.x -= view->scroll_x;
2645                         view_rect.y -= view->scroll_y;
2646
2647                         ev_view_window_child_put (view, window, page,
2648                                                   view_rect.x, view_rect.y,
2649                                                   doc_rect->x1, doc_rect->y1);
2650
2651                         g_object_weak_ref (G_OBJECT (annot),
2652                                            (GWeakNotify)ev_view_annotation_save,
2653                                            view);
2654                 }
2655         }
2656 }
2657
2658 static void
2659 hide_annotation_windows (EvView *view,
2660                          gint    page)
2661 {
2662         GList *annots, *l;
2663
2664         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2665
2666         for (l = annots; l && l->data; l = g_list_next (l)) {
2667                 EvAnnotation *annot;
2668                 GtkWidget    *window;
2669
2670                 annot = ((EvMapping *)(l->data))->data;
2671
2672                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2673                         continue;
2674
2675                 window = g_object_get_data (G_OBJECT (annot), "popup");
2676                 if (window)
2677                         gtk_widget_hide (window);
2678         }
2679 }
2680
2681 static EvAnnotation *
2682 ev_view_get_annotation_at_location (EvView  *view,
2683                                     gdouble  x,
2684                                     gdouble  y)
2685 {
2686         gint page = -1;
2687         gint x_new = 0, y_new = 0;
2688         GList *annotations_mapping;
2689
2690         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2691                 return NULL;
2692
2693         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2694                 return NULL;
2695
2696         annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
2697
2698         if (annotations_mapping)
2699                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2700         else
2701                 return NULL;
2702 }
2703
2704 static void
2705 ev_view_handle_annotation (EvView       *view,
2706                            EvAnnotation *annot,
2707                            gdouble       x,
2708                            gdouble       y,
2709                            guint32       timestamp)
2710 {
2711         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2712                 GtkWidget *window;
2713
2714                 window = g_object_get_data (G_OBJECT (annot), "popup");
2715                 if (window) {
2716                         EvViewWindowChild *child;
2717
2718                         child = ev_view_get_window_child (view, window);
2719                         if (!child->visible) {
2720                                 child->visible = TRUE;
2721                                 ev_view_window_child_move (view, child, child->x, child->y);
2722                                 gtk_widget_show (window);
2723                         }
2724                 }
2725         }
2726
2727         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2728                 EvAttachment *attachment = EV_ANNOTATION_ATTACHMENT (annot)->attachment;
2729
2730                 if (attachment) {
2731                         GError *error = NULL;
2732
2733                         ev_attachment_open (attachment,
2734                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2735                                             timestamp,
2736                                             &error);
2737
2738                         if (error) {
2739                                 g_warning ("%s", error->message);
2740                                 g_error_free (error);
2741                         }
2742                 }
2743         }
2744 }
2745
2746 static gboolean
2747 ev_view_synctex_backward_search (EvView *view,
2748                                  gdouble x,
2749                                  gdouble y)
2750 {
2751         gint page = -1;
2752         gint x_new = 0, y_new = 0;
2753         EvSourceLink *link;
2754
2755         if (!ev_document_has_synctex (view->document))
2756                 return FALSE;
2757
2758         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2759                 return FALSE;
2760
2761         link = ev_document_synctex_backward_search (view->document, page, x_new, y_new);
2762         if (link) {
2763                 g_signal_emit (view, signals[SIGNAL_SYNC_SOURCE], 0, link);
2764                 g_free (link);
2765
2766                 return TRUE;
2767         }
2768
2769         return FALSE;
2770 }
2771
2772 /*** GtkWidget implementation ***/
2773
2774 static void
2775 ev_view_size_request_continuous_dual_page (EvView         *view,
2776                                            GtkRequisition *requisition)
2777 {
2778         gint n_pages;
2779
2780         n_pages = ev_document_get_n_pages (view->document) + 1;
2781         get_page_y_offset (view, n_pages, &requisition->height);
2782
2783         switch (view->sizing_mode) {
2784                 case EV_SIZING_FIT_WIDTH:
2785                 case EV_SIZING_BEST_FIT:
2786                         requisition->width = 1;
2787
2788                         break;
2789                 case EV_SIZING_FREE: {
2790                         gint max_width;
2791                         GtkBorder border;
2792
2793                         ev_view_get_max_page_size (view, &max_width, NULL);
2794                         compute_border (view, max_width, max_width, &border);
2795                         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2796                 }
2797                         break;
2798                 default:
2799                         g_assert_not_reached ();
2800         }
2801 }
2802
2803 static void
2804 ev_view_size_request_continuous (EvView         *view,
2805                                  GtkRequisition *requisition)
2806 {
2807         gint n_pages;
2808
2809         n_pages = ev_document_get_n_pages (view->document);
2810         get_page_y_offset (view, n_pages, &requisition->height);
2811
2812         switch (view->sizing_mode) {
2813                 case EV_SIZING_FIT_WIDTH:
2814                 case EV_SIZING_BEST_FIT:
2815                         requisition->width = 1;
2816
2817                         break;
2818                 case EV_SIZING_FREE: {
2819                         gint max_width;
2820                         GtkBorder border;
2821
2822                         ev_view_get_max_page_size (view, &max_width, NULL);
2823                         compute_border (view, max_width, max_width, &border);
2824                         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2825                 }
2826                         break;
2827                 default:
2828                         g_assert_not_reached ();
2829         }
2830 }
2831
2832 static void
2833 ev_view_size_request_dual_page (EvView         *view,
2834                                 GtkRequisition *requisition)
2835 {
2836         GtkBorder border;
2837         gint width, height;
2838
2839         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2840                 requisition->width = 1;
2841                 requisition->height = 1;
2842
2843                 return;
2844         }
2845
2846         /* Find the largest of the two. */
2847         ev_view_get_page_size (view,
2848                                view->current_page,
2849                                &width, &height);
2850         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2851                 gint width_2, height_2;
2852                 ev_view_get_page_size (view,
2853                                        view->current_page + 1,
2854                                        &width_2, &height_2);
2855                 if (width_2 > width) {
2856                         width = width_2;
2857                         height = height_2;
2858                 }
2859         }
2860         compute_border (view, width, height, &border);
2861
2862         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2863                 ((width + border.left + border.right) * 2) + (view->spacing * 3);
2864         requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
2865 }
2866
2867 static void
2868 ev_view_size_request_single_page (EvView         *view,
2869                                   GtkRequisition *requisition)
2870 {
2871         GtkBorder border;
2872         gint width, height;
2873
2874         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2875                 requisition->width = 1;
2876                 requisition->height = 1;
2877
2878                 return;
2879         }
2880
2881         ev_view_get_page_size (view, view->current_page, &width, &height);
2882         compute_border (view, width, height, &border);
2883
2884         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2885                 width + border.left + border.right + (2 * view->spacing);
2886         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2887 }
2888
2889 static void
2890 ev_view_size_request (GtkWidget      *widget,
2891                       GtkRequisition *requisition)
2892 {
2893         EvView *view = EV_VIEW (widget);
2894
2895         if (view->document == NULL) {
2896                 view->requisition.width = 1;
2897                 view->requisition.height = 1;
2898
2899                 *requisition = view->requisition;
2900
2901                 return;
2902         }
2903
2904         /* Get zoom for size here when not called from
2905          * ev_view_size_allocate()
2906          */
2907         if (!view->internal_size_request &&
2908             (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2909              view->sizing_mode == EV_SIZING_BEST_FIT)) {
2910                 GtkAllocation allocation;
2911
2912                 gtk_widget_get_allocation (widget, &allocation);
2913                 ev_view_zoom_for_size (view,
2914                                        allocation.width,
2915                                        allocation.height);
2916         }
2917
2918         if (view->continuous && view->dual_page)
2919                 ev_view_size_request_continuous_dual_page (view, &view->requisition);
2920         else if (view->continuous)
2921                 ev_view_size_request_continuous (view, &view->requisition);
2922         else if (view->dual_page)
2923                 ev_view_size_request_dual_page (view, &view->requisition);
2924         else
2925                 ev_view_size_request_single_page (view, &view->requisition);
2926
2927         *requisition = view->requisition;
2928 }
2929
2930 static void
2931 ev_view_size_allocate (GtkWidget      *widget,
2932                        GtkAllocation  *allocation)
2933 {
2934         EvView *view = EV_VIEW (widget);
2935         GList  *children, *l;
2936         gint    root_x, root_y;
2937
2938         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2939
2940         if (!view->document)
2941                 return;
2942
2943         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2944             view->sizing_mode == EV_SIZING_BEST_FIT) {
2945                 GtkRequisition req;
2946
2947                 ev_view_zoom_for_size (view,
2948                                        allocation->width,
2949                                        allocation->height);
2950                 view->internal_size_request = TRUE;
2951                 ev_view_size_request (widget, &req);
2952                 view->internal_size_request = FALSE;
2953         }
2954
2955         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2956         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2957
2958         if (view->document)
2959                 view_update_range_and_current_page (view);
2960
2961         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2962         view->pending_resize = FALSE;
2963         view->pending_point.x = 0;
2964         view->pending_point.y = 0;
2965
2966         children = gtk_container_get_children (GTK_CONTAINER (widget));
2967         for (l = children; l && l->data; l = g_list_next (l)) {
2968                 EvFormField   *field;
2969                 GdkRectangle   view_area;
2970                 GList         *form_field_mapping;
2971                 GtkAllocation  child_allocation;
2972                 GtkRequisition child_requisition;
2973                 GtkWidget     *child = (GtkWidget *)l->data;
2974
2975                 field = g_object_get_data (G_OBJECT (child), "form-field");
2976                 if (!field)
2977                         continue;
2978
2979                 form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2980                                                                            field->page->index);
2981                 ev_view_get_area_from_mapping (view, field->page->index,
2982                                                form_field_mapping,
2983                                                field, &view_area);
2984
2985                 gtk_widget_size_request (child, &child_requisition);
2986                 if (child_requisition.width != view_area.width ||
2987                     child_requisition.height != view_area.height)
2988                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2989
2990                 gtk_container_child_get (GTK_CONTAINER (widget),
2991                                          child,
2992                                          "x", &child_allocation.x,
2993                                          "y", &child_allocation.y,
2994                                          NULL);
2995                 if (child_allocation.x != view_area.x ||
2996                     child_allocation.y != view_area.y) {
2997                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2998                 }
2999         }
3000         g_list_free (children);
3001
3002         if (view->window_children)
3003                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
3004                                        &root_x, &root_y);
3005
3006         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
3007                 EvViewWindowChild *child;
3008                 EvRectangle        doc_rect;
3009                 GdkRectangle       view_rect;
3010
3011                 child = (EvViewWindowChild *)l->data;
3012
3013                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
3014                 if (child->moved) {
3015                         doc_rect.x1 = child->orig_x;
3016                         doc_rect.y1 = child->orig_y;
3017                 }
3018                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
3019                 view_rect.x -= view->scroll_x;
3020                 view_rect.y -= view->scroll_y;
3021
3022                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
3023                         child->parent_x = root_x;
3024                         child->parent_y = root_y;
3025                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
3026                 }
3027         }
3028 }
3029
3030 static void
3031 ev_view_realize (GtkWidget *widget)
3032 {
3033         EvView    *view = EV_VIEW (widget);
3034         GdkWindow *bin_window;
3035         GtkStyle  *style;
3036
3037         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
3038                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
3039
3040         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3041         gdk_window_set_events (bin_window,
3042                                (gdk_window_get_events (bin_window) |
3043                                 GDK_EXPOSURE_MASK |
3044                                 GDK_BUTTON_PRESS_MASK |
3045                                 GDK_BUTTON_RELEASE_MASK |
3046                                 GDK_SCROLL_MASK |
3047                                 GDK_KEY_PRESS_MASK |
3048                                 GDK_POINTER_MOTION_MASK |
3049                                 GDK_POINTER_MOTION_HINT_MASK |
3050                                 GDK_ENTER_NOTIFY_MASK |
3051                                 GDK_LEAVE_NOTIFY_MASK));
3052
3053         style = gtk_widget_get_style (widget);
3054         gdk_window_set_background (bin_window, &style->mid[GTK_STATE_NORMAL]);
3055
3056         on_adjustment_value_changed (NULL, view);
3057 }
3058
3059 static gboolean
3060 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3061 {
3062         EvView *view = EV_VIEW (widget);
3063         guint state;
3064
3065         state = event->state & gtk_accelerator_get_default_mod_mask ();
3066
3067         if (state == GDK_CONTROL_MASK) {
3068                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
3069                 if (event->direction == GDK_SCROLL_UP ||
3070                     event->direction == GDK_SCROLL_LEFT) {
3071                         if (ev_view_can_zoom_in (view)) {
3072                                 ev_view_zoom_in (view);
3073                         }
3074                 } else {
3075                         if (ev_view_can_zoom_out (view)) {
3076                                 ev_view_zoom_out (view);
3077                         }
3078                 }
3079
3080                 return TRUE;
3081         }
3082
3083         view->jump_to_find_result = FALSE;
3084
3085         /* Shift+Wheel scrolls the in the perpendicular direction */
3086         if (state & GDK_SHIFT_MASK) {
3087                 if (event->direction == GDK_SCROLL_UP)
3088                         event->direction = GDK_SCROLL_LEFT;
3089                 else if (event->direction == GDK_SCROLL_LEFT)
3090                         event->direction = GDK_SCROLL_UP;
3091                 else if (event->direction == GDK_SCROLL_DOWN)
3092                         event->direction = GDK_SCROLL_RIGHT;
3093                 else if (event->direction == GDK_SCROLL_RIGHT)
3094                         event->direction = GDK_SCROLL_DOWN;
3095
3096                 event->state &= ~GDK_SHIFT_MASK;
3097                 state &= ~GDK_SHIFT_MASK;
3098         }
3099
3100         if (state == 0 && view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous) {
3101                 switch (event->direction) {
3102                         case GDK_SCROLL_DOWN:
3103                         case GDK_SCROLL_RIGHT:
3104                                 ev_view_next_page (view);
3105                                 break;
3106                         case GDK_SCROLL_UP:
3107                         case GDK_SCROLL_LEFT:
3108                                 ev_view_previous_page (view);
3109                                 break;
3110                 }
3111
3112                 return TRUE;
3113         }
3114
3115         return FALSE;
3116 }
3117
3118 static EvViewSelection *
3119 find_selection_for_page (EvView *view,
3120                          gint    page)
3121 {
3122         GList *list;
3123
3124         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3125                 EvViewSelection *selection;
3126
3127                 selection = (EvViewSelection *) list->data;
3128
3129                 if (selection->page == page)
3130                         return selection;
3131         }
3132
3133         return NULL;
3134 }
3135
3136 static gboolean
3137 ev_view_expose_event (GtkWidget      *widget,
3138                       GdkEventExpose *event)
3139 {
3140         EvView    *view = EV_VIEW (widget);
3141         GdkWindow *bin_window;
3142         cairo_t   *cr;
3143         gint       i;
3144
3145         if (view->loading) {
3146                 show_loading_window (view);
3147         } else if (view->loading_window &&
3148                    gtk_widget_get_visible (view->loading_window)) {
3149                 ev_view_loading_window_move (view);
3150         }
3151
3152         if (view->document == NULL)
3153                 return FALSE;
3154
3155         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3156         cr = gdk_cairo_create (bin_window);
3157
3158         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3159                 GdkRectangle page_area;
3160                 GtkBorder border;
3161                 gboolean page_ready = TRUE;
3162
3163                 if (!ev_view_get_page_extents (view, i, &page_area, &border))
3164                         continue;
3165
3166                 page_area.x -= view->scroll_x;
3167                 page_area.y -= view->scroll_y;
3168
3169                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3170
3171                 if (page_ready && view->find_pages && view->highlight_find_results)
3172                         highlight_find_results (view, i);
3173                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3174                         show_annotation_windows (view, i);
3175                 if (page_ready && view->synctex_result)
3176                         highlight_forward_search_results (view, i);
3177         }
3178
3179         cairo_destroy (cr);
3180
3181         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3182                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3183
3184         return FALSE;
3185 }
3186
3187 static gboolean
3188 ev_view_do_popup_menu (EvView *view,
3189                        gdouble x,
3190                        gdouble y)
3191 {
3192         GList        *items = NULL;
3193         EvLink       *link;
3194         EvImage      *image;
3195         EvAnnotation *annot;
3196
3197         image = ev_view_get_image_at_location (view, x, y);
3198         if (image)
3199                 items = g_list_prepend (items, image);
3200
3201         link = ev_view_get_link_at_location (view, x, y);
3202         if (link)
3203                 items = g_list_prepend (items, link);
3204
3205         annot = ev_view_get_annotation_at_location (view, x, y);
3206         if (annot)
3207                 items = g_list_prepend (items, annot);
3208
3209         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, items);
3210
3211         g_list_free (items);
3212
3213         return TRUE;
3214 }
3215
3216 static gboolean
3217 ev_view_popup_menu (GtkWidget *widget)
3218 {
3219         gint x, y;
3220
3221         gtk_widget_get_pointer (widget, &x, &y);
3222         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3223 }
3224
3225 static void
3226 get_link_area (EvView       *view,
3227                gint          x,
3228                gint          y,
3229                EvLink       *link,
3230                GdkRectangle *area)
3231 {
3232         GList *link_mapping;
3233         gint   page;
3234         gint   x_offset = 0, y_offset = 0;
3235
3236         x += view->scroll_x;
3237         y += view->scroll_y;
3238
3239         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3240
3241         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
3242         ev_view_get_area_from_mapping (view, page,
3243                                        link_mapping,
3244                                        link, area);
3245 }
3246
3247 static void
3248 get_annot_area (EvView       *view,
3249                gint          x,
3250                gint          y,
3251                EvAnnotation *annot,
3252                GdkRectangle *area)
3253 {
3254         GList *annot_mapping;
3255         gint   page;
3256         gint   x_offset = 0, y_offset = 0;
3257
3258         x += view->scroll_x;
3259         y += view->scroll_y;
3260
3261         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3262
3263         annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
3264         ev_view_get_area_from_mapping (view, page,
3265                                        annot_mapping,
3266                                        annot, area);
3267 }
3268
3269 static gboolean
3270 ev_view_query_tooltip (GtkWidget  *widget,
3271                        gint        x,
3272                        gint        y,
3273                        gboolean    keyboard_tip,
3274                        GtkTooltip *tooltip)
3275 {
3276         EvView       *view = EV_VIEW (widget);
3277         EvLink       *link;
3278         EvAnnotation *annot;
3279         gchar        *text;
3280
3281         annot = ev_view_get_annotation_at_location (view, x, y);
3282         if (annot && annot->contents) {
3283                 GdkRectangle annot_area;
3284
3285                 get_annot_area (view, x, y, annot, &annot_area);
3286                 gtk_tooltip_set_text (tooltip, annot->contents);
3287                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3288
3289                 return TRUE;
3290         }
3291
3292         link = ev_view_get_link_at_location (view, x, y);
3293         if (!link)
3294                 return FALSE;
3295
3296         text = tip_from_link (view, link);
3297         if (text && g_utf8_validate (text, -1, NULL)) {
3298                 GdkRectangle link_area;
3299
3300                 get_link_area (view, x, y, link, &link_area);
3301                 gtk_tooltip_set_text (tooltip, text);
3302                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3303         }
3304         g_free (text);
3305
3306         return TRUE;
3307 }
3308
3309 static void
3310 start_selection_for_event (EvView         *view,
3311                            GdkEventButton *event)
3312 {
3313         clear_selection (view);
3314
3315         view->selection_info.start.x = event->x + view->scroll_x;
3316         view->selection_info.start.y = event->y + view->scroll_y;
3317
3318         switch (event->type) {
3319                 case GDK_2BUTTON_PRESS:
3320                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3321                         break;
3322                 case GDK_3BUTTON_PRESS:
3323                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3324                         break;
3325                 default:
3326                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3327                         return;
3328         }
3329
3330         /* In case of WORD or LINE, compute selections now */
3331         compute_selections (view,
3332                             view->selection_info.style,
3333                             &(view->selection_info.start),
3334                             &(view->selection_info.start));
3335 }
3336
3337 static gboolean
3338 ev_view_button_press_event (GtkWidget      *widget,
3339                             GdkEventButton *event)
3340 {
3341         EvView *view = EV_VIEW (widget);
3342
3343         if (!view->document)
3344                 return FALSE;
3345
3346         if (!gtk_widget_has_focus (widget)) {
3347                 gtk_widget_grab_focus (widget);
3348         }
3349
3350         if (view->window_child_focus) {
3351                 EvAnnotationWindow *window;
3352                 EvAnnotation       *annot;
3353
3354                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3355                 annot = ev_annotation_window_get_annotation (window);
3356                 ev_annotation_window_ungrab_focus (window);
3357                 ev_view_annotation_save (view, annot);
3358                 view->window_child_focus = NULL;
3359         }
3360
3361         view->pressed_button = event->button;
3362         view->selection_info.in_drag = FALSE;
3363
3364         if (view->scroll_info.autoscrolling)
3365                 return TRUE;
3366
3367         switch (event->button) {
3368                 case 1: {
3369                         EvImage *image;
3370                         EvAnnotation *annot;
3371                         EvFormField *field;
3372
3373                         if (event->state & GDK_CONTROL_MASK)
3374                                 return ev_view_synctex_backward_search (view, event->x , event->y);
3375
3376                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3377                                 if (event->type == GDK_3BUTTON_PRESS) {
3378                                         start_selection_for_event (view, event);
3379                                 } else if (location_in_selected_text (view,
3380                                                                event->x + view->scroll_x,
3381                                                                event->y + view->scroll_y)) {
3382                                         view->selection_info.in_drag = TRUE;
3383                                 } else {
3384                                         start_selection_for_event (view, event);
3385                                 }
3386
3387                                 gtk_widget_queue_draw (widget);
3388                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3389                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3390                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3391                                 ev_view_remove_all (view);
3392                                 ev_view_handle_form_field (view, field, event->x, event->y);
3393                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3394                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3395                                 if (view->image_dnd_info.image)
3396                                         g_object_unref (view->image_dnd_info.image);
3397                                 view->image_dnd_info.image = g_object_ref (image);
3398                                 view->image_dnd_info.in_drag = TRUE;
3399
3400                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3401                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3402                         } else {
3403                                 ev_view_remove_all (view);
3404
3405                                 if (view->synctex_result) {
3406                                         g_free (view->synctex_result);
3407                                         view->synctex_result = NULL;
3408                                         gtk_widget_queue_draw (widget);
3409                                 }
3410
3411                                 if (EV_IS_SELECTION (view->document))
3412                                         start_selection_for_event (view, event);
3413                         }
3414                 }
3415                         return TRUE;
3416                 case 2:
3417                         /* use root coordinates as reference point because
3418                          * scrolling changes window relative coordinates */
3419                         view->drag_info.start.x = event->x_root;
3420                         view->drag_info.start.y = event->y_root;
3421                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3422                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3423
3424                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3425
3426                         return TRUE;
3427                 case 3:
3428                         view->scroll_info.start_y = event->y;
3429                         return ev_view_do_popup_menu (view, event->x, event->y);
3430         }
3431
3432         return FALSE;
3433 }
3434
3435 static void
3436 ev_view_remove_all (EvView *view)
3437 {
3438         GList *children, *child;
3439
3440         children = gtk_container_get_children (GTK_CONTAINER (view));
3441         for (child = children; child && child->data; child = g_list_next (child)) {
3442                 gtk_container_remove (GTK_CONTAINER (view),
3443                                       GTK_WIDGET (child->data));
3444         }
3445         g_list_free (children);
3446 }
3447
3448 /*** Drag and Drop ***/
3449 static void
3450 ev_view_drag_data_get (GtkWidget        *widget,
3451                        GdkDragContext   *context,
3452                        GtkSelectionData *selection_data,
3453                        guint             info,
3454                        guint             time)
3455 {
3456         EvView *view = EV_VIEW (widget);
3457
3458         switch (info) {
3459                 case TARGET_DND_TEXT:
3460                         if (EV_IS_SELECTION (view->document) &&
3461                             view->selection_info.selections) {
3462                                 gchar *text;
3463
3464                                 text = get_selected_text (view);
3465                                 gtk_selection_data_set_text (selection_data,
3466                                                              text,
3467                                                              strlen (text));
3468                                 g_free (text);
3469                         }
3470                         break;
3471                 case TARGET_DND_IMAGE:
3472                         if (view->image_dnd_info.image) {
3473                                 GdkPixbuf *pixbuf;
3474
3475                                 ev_document_doc_mutex_lock ();
3476                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3477                                                                        view->image_dnd_info.image);
3478                                 ev_document_doc_mutex_unlock ();
3479
3480                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3481                                 g_object_unref (pixbuf);
3482                         }
3483                         break;
3484                 case TARGET_DND_URI:
3485                         if (view->image_dnd_info.image) {
3486                                 GdkPixbuf   *pixbuf;
3487                                 const gchar *tmp_uri;
3488                                 gchar       *uris[2];
3489
3490                                 ev_document_doc_mutex_lock ();
3491                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3492                                                                        view->image_dnd_info.image);
3493                                 ev_document_doc_mutex_unlock ();
3494
3495                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3496                                 g_object_unref (pixbuf);
3497
3498                                 uris[0] = (gchar *)tmp_uri;
3499                                 uris[1] = NULL;
3500                                 gtk_selection_data_set_uris (selection_data, uris);
3501                         }
3502         }
3503 }
3504
3505 static gboolean
3506 ev_view_drag_motion (GtkWidget      *widget,
3507                      GdkDragContext *context,
3508                      gint            x,
3509                      gint            y,
3510                      guint           time)
3511 {
3512         if (gtk_drag_get_source_widget (context) == widget)
3513                 gdk_drag_status (context, 0, time);
3514         else
3515                 gdk_drag_status (context, gdk_drag_context_get_suggested_action (context), time);
3516
3517         return TRUE;
3518 }
3519
3520 static gboolean
3521 selection_update_idle_cb (EvView *view)
3522 {
3523         compute_selections (view,
3524                             view->selection_info.style,
3525                             &view->selection_info.start,
3526                             &view->motion);
3527         view->selection_update_id = 0;
3528         return FALSE;
3529 }
3530
3531 static gboolean
3532 selection_scroll_timeout_cb (EvView *view)
3533 {
3534         gint x, y, shift = 0;
3535         GtkWidget *widget = GTK_WIDGET (view);
3536         GtkAllocation allocation;
3537
3538         gtk_widget_get_allocation (widget, &allocation);
3539         gtk_widget_get_pointer (widget, &x, &y);
3540
3541         if (y > allocation.height) {
3542                 shift = (y - allocation.height) / 2;
3543         } else if (y < 0) {
3544                 shift = y / 2;
3545         }
3546
3547         if (shift)
3548                 gtk_adjustment_set_value (view->vadjustment,
3549                                           CLAMP (gtk_adjustment_get_value (view->vadjustment) + shift,
3550                                                  gtk_adjustment_get_lower (view->vadjustment),
3551                                                  gtk_adjustment_get_upper (view->vadjustment) -
3552                                                  gtk_adjustment_get_page_size (view->vadjustment)));
3553
3554         if (x > allocation.width) {
3555                 shift = (x - allocation.width) / 2;
3556         } else if (x < 0) {
3557                 shift = x / 2;
3558         }
3559
3560         if (shift)
3561                 gtk_adjustment_set_value (view->hadjustment,
3562                                           CLAMP (gtk_adjustment_get_value (view->hadjustment) + shift,
3563                                                  gtk_adjustment_get_lower (view->hadjustment),
3564                                                  gtk_adjustment_get_upper (view->hadjustment) -
3565                                                  gtk_adjustment_get_page_size (view->hadjustment)));
3566
3567         return TRUE;
3568 }
3569
3570 static gboolean
3571 ev_view_drag_update_momentum (EvView *view)
3572 {
3573         int i;
3574         if (!view->drag_info.in_drag)
3575                 return FALSE;
3576
3577         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3578                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3579                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3580         }
3581
3582         /* Momentum is a moving average of 10ms granularity over
3583          * the last 100ms with each 10ms stored in buffer.
3584          */
3585
3586         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3587         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3588
3589         return TRUE;
3590 }
3591
3592 static gboolean
3593 ev_view_scroll_drag_release (EvView *view)
3594 {
3595         gdouble dhadj_value, dvadj_value;
3596         gdouble oldhadjustment, oldvadjustment;
3597         gdouble h_page_size, v_page_size;
3598         gdouble h_upper, v_upper;
3599         GtkAllocation allocation;
3600
3601         view->drag_info.momentum.x /= 1.2;
3602         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3603
3604         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
3605
3606         h_page_size = gtk_adjustment_get_page_size (view->hadjustment);
3607         v_page_size = gtk_adjustment_get_page_size (view->vadjustment);
3608
3609         dhadj_value = h_page_size *
3610                       (gdouble)view->drag_info.momentum.x / allocation.width;
3611         dvadj_value = v_page_size *
3612                       (gdouble)view->drag_info.momentum.y / allocation.height;
3613
3614         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3615         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3616
3617         h_upper = gtk_adjustment_get_upper (view->hadjustment);
3618         v_upper = gtk_adjustment_get_upper (view->vadjustment);
3619
3620         /* When we reach the edges, we need either to absorb some momentum and bounce by
3621          * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3622         if (((oldhadjustment + dhadj_value) > (h_upper - h_page_size)) ||
3623             ((oldhadjustment + dhadj_value) < 0))
3624                 view->drag_info.momentum.x = 0;
3625         if (((oldvadjustment + dvadj_value) > (v_upper - v_page_size)) ||
3626             ((oldvadjustment + dvadj_value) < 0))
3627                 view->drag_info.momentum.y = 0;
3628
3629         gtk_adjustment_set_value (view->hadjustment,
3630                                   MIN (oldhadjustment + dhadj_value,
3631                                        h_upper - h_page_size));
3632         gtk_adjustment_set_value (view->vadjustment,
3633                                   MIN (oldvadjustment + dvadj_value,
3634                                        v_upper - v_page_size));
3635
3636         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3637             ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3638                 return FALSE;
3639         else
3640                 return TRUE;
3641 }
3642
3643 static gboolean
3644 ev_view_motion_notify_event (GtkWidget      *widget,
3645                              GdkEventMotion *event)
3646 {
3647         EvView    *view = EV_VIEW (widget);
3648         GdkWindow *bin_window;
3649         gint       x, y;
3650
3651         if (!view->document)
3652                 return FALSE;
3653
3654         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3655
3656         if (event->is_hint || event->window != bin_window) {
3657             gtk_widget_get_pointer (widget, &x, &y);
3658         } else {
3659             x = event->x;
3660             y = event->y;
3661         }
3662
3663         if (view->scroll_info.autoscrolling) {
3664                 view->scroll_info.last_y = y;
3665                 return TRUE;
3666         }
3667
3668         if (view->selection_info.in_drag) {
3669                 if (gtk_drag_check_threshold (widget,
3670                                               view->selection_info.start.x,
3671                                               view->selection_info.start.y,
3672                                               x, y)) {
3673                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3674
3675                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3676
3677                         gtk_drag_begin (widget, target_list,
3678                                         GDK_ACTION_COPY,
3679                                         1, (GdkEvent *)event);
3680
3681                         view->selection_info.in_drag = FALSE;
3682
3683                         gtk_target_list_unref (target_list);
3684
3685                         return TRUE;
3686                 }
3687         } else if (view->image_dnd_info.in_drag) {
3688                 if (gtk_drag_check_threshold (widget,
3689                                               view->selection_info.start.x,
3690                                               view->selection_info.start.y,
3691                                               x, y)) {
3692                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3693
3694                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3695                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3696
3697                         gtk_drag_begin (widget, target_list,
3698                                         GDK_ACTION_COPY,
3699                                         1, (GdkEvent *)event);
3700
3701                         view->image_dnd_info.in_drag = FALSE;
3702
3703                         gtk_target_list_unref (target_list);
3704
3705                         return TRUE;
3706                 }
3707         }
3708
3709         switch (view->pressed_button) {
3710         case 1:
3711                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3712                  * documents only.
3713                  */
3714                 if (view->rotation != 0)
3715                         return FALSE;
3716
3717                 /* Schedule timeout to scroll during selection and additionally
3718                  * scroll once to allow arbitrary speed. */
3719                 if (!view->selection_scroll_id)
3720                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3721                                                                (GSourceFunc)selection_scroll_timeout_cb,
3722                                                                view);
3723                 else
3724                     selection_scroll_timeout_cb (view);
3725
3726                 view->selection_info.in_selection = TRUE;
3727                 view->motion.x = x + view->scroll_x;
3728                 view->motion.y = y + view->scroll_y;
3729
3730                 /* Queue an idle to handle the motion.  We do this because
3731                  * handling any selection events in the motion could be slower
3732                  * than new motion events reach us.  We always put it in the
3733                  * idle to make sure we catch up and don't visibly lag the
3734                  * mouse. */
3735                 if (!view->selection_update_id)
3736                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3737
3738                 return TRUE;
3739         case 2:
3740                 if (!view->drag_info.in_drag) {
3741                         gboolean start;
3742                         int i;
3743
3744                         start = gtk_drag_check_threshold (widget,
3745                                                           view->drag_info.start.x,
3746                                                           view->drag_info.start.y,
3747                                                           event->x_root,
3748                                                           event->y_root);
3749                         view->drag_info.in_drag = start;
3750                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3751                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3752                         /* Set 100 to choose how long it takes to build up momentum */
3753                         /* Clear out previous momentum info: */
3754                         for (i = 0; i < DRAG_HISTORY; i++) {
3755                                 view->drag_info.buffer[i].x = event->x;
3756                                 view->drag_info.buffer[i].y = event->y;
3757                         }
3758                         view->drag_info.momentum.x = 0;
3759                         view->drag_info.momentum.y = 0;
3760                 }
3761
3762                 if (view->drag_info.in_drag) {
3763                         int dx, dy;
3764                         gdouble dhadj_value, dvadj_value;
3765                         GtkAllocation allocation;
3766
3767                         view->drag_info.buffer[0].x = event->x;
3768                         view->drag_info.buffer[0].y = event->y;
3769
3770                         dx = event->x_root - view->drag_info.start.x;
3771                         dy = event->y_root - view->drag_info.start.y;
3772
3773                         gtk_widget_get_allocation (widget, &allocation);
3774
3775                         dhadj_value = gtk_adjustment_get_page_size (view->hadjustment) *
3776                                       (gdouble)dx / allocation.width;
3777                         dvadj_value = gtk_adjustment_get_page_size (view->vadjustment) *
3778                                       (gdouble)dy / allocation.height;
3779
3780                         /* clamp scrolling to visible area */
3781                         gtk_adjustment_set_value (view->hadjustment,
3782                                                   MIN (view->drag_info.hadj - dhadj_value,
3783                                                        gtk_adjustment_get_upper (view->hadjustment) -
3784                                                        gtk_adjustment_get_page_size (view->hadjustment)));
3785                         gtk_adjustment_set_value (view->vadjustment,
3786                                                   MIN (view->drag_info.vadj - dvadj_value,
3787                                                        gtk_adjustment_get_upper (view->vadjustment) -
3788                                                        gtk_adjustment_get_page_size (view->vadjustment)));
3789
3790                         return TRUE;
3791                 }
3792
3793                 break;
3794         default:
3795                 ev_view_handle_cursor_over_xy (view, x, y);
3796         }
3797
3798         return FALSE;
3799 }
3800
3801 static gboolean
3802 ev_view_button_release_event (GtkWidget      *widget,
3803                               GdkEventButton *event)
3804 {
3805         EvView *view = EV_VIEW (widget);
3806         EvLink *link = NULL;
3807
3808         view->image_dnd_info.in_drag = FALSE;
3809
3810         if (view->scroll_info.autoscrolling) {
3811                 ev_view_autoscroll_stop (view);
3812                 view->pressed_button = -1;
3813
3814                 return TRUE;
3815         }
3816
3817         if (view->drag_info.in_drag) {
3818                 view->drag_info.release_timeout_id =
3819                         g_timeout_add (20,
3820                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3821         }
3822
3823         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3824                 link = ev_view_get_link_at_location (view, event->x, event->y);
3825         }
3826
3827         view->drag_info.in_drag = FALSE;
3828
3829         if (view->pressed_button == 2) {
3830                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3831         }
3832
3833         view->pressed_button = -1;
3834
3835         if (view->selection_scroll_id) {
3836             g_source_remove (view->selection_scroll_id);
3837             view->selection_scroll_id = 0;
3838         }
3839         if (view->selection_update_id) {
3840             g_source_remove (view->selection_update_id);
3841             view->selection_update_id = 0;
3842         }
3843
3844         if (view->selection_info.selections) {
3845                 clear_link_selected (view);
3846                 ev_view_update_primary_selection (view);
3847
3848                 if (view->selection_info.in_drag) {
3849                         clear_selection (view);
3850                         gtk_widget_queue_draw (widget);
3851                 }
3852
3853                 view->selection_info.in_drag = FALSE;
3854         } else if (link) {
3855                 if (event->button == 2) {
3856                         EvLinkAction    *action;
3857                         EvLinkActionType type;
3858
3859                         action = ev_link_get_action (link);
3860                         if (!action)
3861                                 return FALSE;
3862
3863                         type = ev_link_action_get_action_type (action);
3864                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3865                                 g_signal_emit (view,
3866                                                signals[SIGNAL_EXTERNAL_LINK],
3867                                                0, action);
3868                         }
3869                 } else {
3870                         ev_view_handle_link (view, link);
3871                 }
3872         }
3873
3874         return FALSE;
3875 }
3876
3877 static gboolean
3878 ev_view_key_press_event (GtkWidget   *widget,
3879                          GdkEventKey *event)
3880 {
3881         EvView *view = EV_VIEW (widget);
3882
3883         if (!view->document)
3884                 return FALSE;
3885
3886         if (!gtk_widget_has_focus (widget)) {
3887                 /* Forward key events to current focused window child */
3888                 if (view->window_child_focus) {
3889                         GdkEventKey *new_event;
3890                         gboolean     handled;
3891
3892                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
3893                         g_object_unref (new_event->window);
3894                         new_event->window = gtk_widget_get_window (view->window_child_focus->window);
3895                         if (new_event->window)
3896                                 g_object_ref (new_event->window);
3897                         gtk_widget_realize (view->window_child_focus->window);
3898                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
3899                         gdk_event_free ((GdkEvent *)new_event);
3900
3901                         return handled;
3902                 }
3903
3904                 return FALSE;
3905         }
3906
3907         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3908 }
3909
3910 static gint
3911 ev_view_focus_in (GtkWidget     *widget,
3912                   GdkEventFocus *event)
3913 {
3914         if (EV_VIEW (widget)->pixbuf_cache)
3915                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3916         gtk_widget_queue_draw (widget);
3917
3918         return FALSE;
3919 }
3920
3921 static gint
3922 ev_view_focus_out (GtkWidget     *widget,
3923                    GdkEventFocus *event)
3924 {
3925         if (EV_VIEW (widget)->pixbuf_cache)
3926                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3927         gtk_widget_queue_draw (widget);
3928
3929         return FALSE;
3930 }
3931
3932 static gboolean
3933 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3934 {
3935         EvView *view = EV_VIEW (widget);
3936
3937         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3938                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3939
3940         return FALSE;
3941 }
3942
3943 static gboolean
3944 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3945 {
3946         EvView *view = EV_VIEW (widget);
3947
3948         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3949
3950         return FALSE;
3951 }
3952
3953 static void
3954 ev_view_style_set (GtkWidget *widget,
3955                    GtkStyle  *old_style)
3956 {
3957         if (EV_VIEW (widget)->pixbuf_cache)
3958                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3959
3960         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3961 }
3962
3963 /*** Drawing ***/
3964
3965 static void
3966 draw_rubberband (EvView             *view,
3967                  GdkWindow          *window,
3968                  const GdkRectangle *rect,
3969                  gdouble             alpha)
3970 {
3971         GtkStyle *style;
3972         GdkColor *fill_color_gdk;
3973         gdouble   r, g, b;
3974         cairo_t  *cr;
3975
3976         style = gtk_widget_get_style (GTK_WIDGET (view));
3977         fill_color_gdk = gdk_color_copy (&style->base[GTK_STATE_SELECTED]);
3978         r = fill_color_gdk->red / 65535.;
3979         g = fill_color_gdk->green / 65535.;
3980         b = fill_color_gdk->blue / 65535.;
3981
3982         cr = gdk_cairo_create (window);
3983
3984         cairo_set_source_rgba (cr, r, g, b, alpha);
3985         cairo_rectangle (cr,
3986                          rect->x - view->scroll_x,
3987                          rect->y - view->scroll_y,
3988                          rect->width, rect->height);
3989         cairo_fill_preserve (cr);
3990
3991         cairo_set_line_width (cr, 0.5);
3992         cairo_set_source_rgb (cr, r, g, b);
3993         cairo_stroke (cr);
3994
3995         cairo_destroy (cr);
3996
3997         gdk_color_free (fill_color_gdk);
3998 }
3999
4000
4001 static void
4002 highlight_find_results (EvView *view, int page)
4003 {
4004         gint       i, n_results = 0;
4005         GdkWindow *bin_window;
4006
4007         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4008
4009         n_results = ev_view_find_get_n_results (view, page);
4010
4011         for (i = 0; i < n_results; i++) {
4012                 EvRectangle *rectangle;
4013                 GdkRectangle view_rectangle;
4014                 gdouble      alpha;
4015
4016                 if (i == view->find_result && page == view->current_page) {
4017                         alpha = 0.6;
4018                 } else {
4019                         alpha = 0.3;
4020                 }
4021
4022                 rectangle = ev_view_find_get_result (view, page, i);
4023                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4024                 draw_rubberband (view, bin_window, &view_rectangle, alpha);
4025         }
4026 }
4027
4028 static void
4029 highlight_forward_search_results (EvView *view, int page)
4030 {
4031         GdkWindow   *bin_window;
4032         GdkRectangle rect;
4033         cairo_t     *cr;
4034         EvMapping   *mapping = view->synctex_result;
4035
4036         if (GPOINTER_TO_INT (mapping->data) != page)
4037                 return;
4038
4039         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4040         doc_rect_to_view_rect (view, page, &mapping->area, &rect);
4041
4042         cr = gdk_cairo_create (bin_window);
4043         cairo_set_source_rgb (cr, 1., 0., 0.);
4044         cairo_rectangle (cr,
4045                          rect.x - view->scroll_x,
4046                          rect.y - view->scroll_y,
4047                          rect.width, rect.height);
4048         cairo_stroke (cr);
4049         cairo_destroy (cr);
4050 }
4051
4052 static void
4053 ev_view_loading_window_move (EvView *view)
4054 {
4055         GtkWidget       *widget = GTK_WIDGET (view);
4056         EvLoadingWindow *window = EV_LOADING_WINDOW (view->loading_window);
4057         gint             root_x, root_y;
4058         gint             window_width;
4059         GtkAllocation    allocation;
4060
4061         gtk_widget_get_allocation (widget, &allocation);
4062         gdk_window_get_origin (gtk_widget_get_window (widget), &root_x, &root_y);
4063         ev_loading_window_get_size (window, &window_width, NULL);
4064
4065         root_x += allocation.width - window_width - 10;
4066         root_y += 10;
4067
4068         ev_loading_window_move (window, root_x, root_y);
4069 }
4070
4071 static gboolean
4072 show_loading_window_cb (EvView *view)
4073 {
4074         if (!view->loading_window) {
4075                 GtkWindow *parent;
4076                 GdkScreen *screen;
4077
4078                 parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
4079                 view->loading_window = ev_loading_window_new (parent);
4080
4081                 /* Show the window off screen to get a valid size asap */
4082                 screen = gtk_widget_get_screen (GTK_WIDGET (view));
4083                 gtk_window_move (GTK_WINDOW (view->loading_window),
4084                                  gdk_screen_get_width (screen) + 1,
4085                                  gdk_screen_get_height (screen) + 1);
4086                 gtk_widget_show (view->loading_window);
4087         }
4088
4089         ev_view_loading_window_move (view);
4090
4091         gtk_widget_show (view->loading_window);
4092
4093         view->loading_timeout = 0;
4094
4095         return FALSE;
4096 }
4097
4098 static void
4099 show_loading_window (EvView *view)
4100 {
4101         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4102                 ev_view_loading_window_move (view);
4103                 return;
4104         }
4105
4106         if (!view->loading_timeout) {
4107                 view->loading_timeout =
4108                         g_timeout_add_full (G_PRIORITY_LOW,
4109                                             0.5, (GSourceFunc)show_loading_window_cb,
4110                                             view, NULL);
4111         }
4112 }
4113
4114 static void
4115 hide_loading_window (EvView *view)
4116 {
4117         if (view->loading_timeout) {
4118                 g_source_remove (view->loading_timeout);
4119                 view->loading_timeout = 0;
4120         }
4121
4122         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4123                 gtk_widget_hide (view->loading_window);
4124         }
4125 }
4126
4127 static void
4128 draw_one_page (EvView       *view,
4129                gint          page,
4130                cairo_t      *cr,
4131                GdkRectangle *page_area,
4132                GtkBorder    *border,
4133                GdkRectangle *expose_area,
4134                gboolean     *page_ready)
4135 {
4136         GdkWindow   *bin_window;
4137         GdkRectangle overlap;
4138         GdkRectangle real_page_area;
4139         gint         current_page;
4140         gboolean     inverted_colors;
4141
4142         g_assert (view->document);
4143
4144         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4145                 return;
4146
4147         /* Render the document itself */
4148         real_page_area = *page_area;
4149
4150         real_page_area.x += border->left;
4151         real_page_area.y += border->top;
4152         real_page_area.width -= (border->left + border->right);
4153         real_page_area.height -= (border->top + border->bottom);
4154         *page_ready = TRUE;
4155
4156         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4157         current_page = ev_document_model_get_page (view->model);
4158         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4159         ev_document_misc_paint_one_page (bin_window,
4160                                          GTK_WIDGET (view),
4161                                          page_area, border,
4162                                          page == current_page,
4163                                          inverted_colors);
4164
4165         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4166                 gint             width, height;
4167                 gint             page_width, page_height;
4168                 cairo_surface_t *page_surface = NULL;
4169                 gint             selection_width, selection_height;
4170                 cairo_surface_t *selection_surface = NULL;
4171
4172                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4173
4174                 if (!page_surface) {
4175                         if (page == current_page)
4176                                 show_loading_window (view);
4177
4178                         *page_ready = FALSE;
4179
4180                         return;
4181                 }
4182
4183                 if (page == current_page)
4184                         hide_loading_window (view);
4185
4186                 ev_view_get_page_size (view, page, &width, &height);
4187
4188                 page_width = cairo_image_surface_get_width (page_surface);
4189                 page_height = cairo_image_surface_get_height (page_surface);
4190
4191                 cairo_save (cr);
4192                 cairo_translate (cr, overlap.x, overlap.y);
4193
4194                 if (width != page_width || height != page_height) {
4195                         cairo_pattern_set_filter (cairo_get_source (cr),
4196                                                   CAIRO_FILTER_FAST);
4197                         cairo_scale (cr,
4198                                      (gdouble)width / page_width,
4199                                      (gdouble)height / page_height);
4200                 }
4201
4202                 cairo_surface_set_device_offset (page_surface,
4203                                                  overlap.x - real_page_area.x,
4204                                                  overlap.y - real_page_area.y);
4205                 cairo_set_source_surface (cr, page_surface, 0, 0);
4206                 cairo_paint (cr);
4207                 cairo_restore (cr);
4208
4209                 /* Get the selection pixbuf iff we have something to draw */
4210                 if (find_selection_for_page (view, page) &&
4211                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4212                         selection_surface =
4213                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4214                                                                        page,
4215                                                                        view->scale,
4216                                                                        NULL);
4217                 }
4218
4219                 if (!selection_surface) {
4220                         return;
4221                 }
4222
4223                 selection_width = cairo_image_surface_get_width (selection_surface);
4224                 selection_height = cairo_image_surface_get_height (selection_surface);
4225
4226                 cairo_save (cr);
4227                 cairo_translate (cr, overlap.x, overlap.y);
4228
4229                 if (width != selection_width || height != selection_height) {
4230                         cairo_pattern_set_filter (cairo_get_source (cr),
4231                                                   CAIRO_FILTER_FAST);
4232                         cairo_scale (cr,
4233                                      (gdouble)width / selection_width,
4234                                      (gdouble)height / selection_height);
4235                 }
4236
4237                 cairo_surface_set_device_offset (selection_surface,
4238                                                  overlap.x - real_page_area.x,
4239                                                  overlap.y - real_page_area.y);
4240
4241                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4242                 cairo_paint (cr);
4243                 cairo_restore (cr);
4244         }
4245 }
4246
4247 /*** GObject functions ***/
4248
4249 static void
4250 ev_view_finalize (GObject *object)
4251 {
4252         EvView *view = EV_VIEW (object);
4253
4254         clear_selection (view);
4255         clear_link_selected (view);
4256
4257         if (view->synctex_result) {
4258                 g_free (view->synctex_result);
4259                 view->synctex_result = NULL;
4260         }
4261
4262         if (view->image_dnd_info.image)
4263                 g_object_unref (view->image_dnd_info.image);
4264         view->image_dnd_info.image = NULL;
4265
4266         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4267 }
4268
4269 static void
4270 ev_view_destroy (GtkObject *object)
4271 {
4272         EvView *view = EV_VIEW (object);
4273
4274         if (view->model) {
4275                 g_object_unref (view->model);
4276                 view->model = NULL;
4277         }
4278
4279         if (view->pixbuf_cache) {
4280                 g_object_unref (view->pixbuf_cache);
4281                 view->pixbuf_cache = NULL;
4282         }
4283
4284         if (view->document) {
4285                 g_object_unref (view->document);
4286                 view->document = NULL;
4287         }
4288
4289         if (view->page_cache) {
4290                 g_object_unref (view->page_cache);
4291                 view->page_cache = NULL;
4292         }
4293
4294         ev_view_window_children_free (view);
4295
4296         if (view->selection_scroll_id) {
4297             g_source_remove (view->selection_scroll_id);
4298             view->selection_scroll_id = 0;
4299         }
4300
4301         if (view->selection_update_id) {
4302             g_source_remove (view->selection_update_id);
4303             view->selection_update_id = 0;
4304         }
4305
4306         if (view->scroll_info.timeout_id) {
4307             g_source_remove (view->scroll_info.timeout_id);
4308             view->scroll_info.timeout_id = 0;
4309         }
4310
4311         if (view->drag_info.drag_timeout_id) {
4312                 g_source_remove (view->drag_info.drag_timeout_id);
4313                 view->drag_info.drag_timeout_id = 0;
4314         }
4315
4316         if (view->drag_info.release_timeout_id) {
4317                 g_source_remove (view->drag_info.release_timeout_id);
4318                 view->drag_info.release_timeout_id = 0;
4319         }
4320
4321         if (view->loading_timeout) {
4322                 g_source_remove (view->loading_timeout);
4323                 view->loading_timeout = 0;
4324         }
4325
4326         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4327
4328         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4329 }
4330
4331 static AtkObject *
4332 ev_view_get_accessible (GtkWidget *widget)
4333 {
4334         static gboolean first_time = TRUE;
4335
4336         if (first_time) {
4337                 AtkObjectFactory *factory;
4338                 AtkRegistry *registry;
4339                 GType derived_type;
4340                 GType derived_atk_type;
4341
4342                 /*
4343                  * Figure out whether accessibility is enabled by looking at the
4344                  * type of the accessible object which would be created for
4345                  * the parent type of EvView.
4346                  */
4347                 derived_type = g_type_parent (EV_TYPE_VIEW);
4348
4349                 registry = atk_get_default_registry ();
4350                 factory = atk_registry_get_factory (registry,
4351                                                     derived_type);
4352                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4353                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4354                         atk_registry_set_factory_type (registry,
4355                                                        EV_TYPE_VIEW,
4356                                                        ev_view_accessible_factory_get_type ());
4357                 first_time = FALSE;
4358         }
4359         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4360 }
4361
4362 static void
4363 ev_view_class_init (EvViewClass *class)
4364 {
4365         GObjectClass *object_class = G_OBJECT_CLASS (class);
4366         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4367         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4368         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4369         GtkBindingSet *binding_set;
4370
4371         object_class->finalize = ev_view_finalize;
4372
4373         widget_class->expose_event = ev_view_expose_event;
4374         widget_class->button_press_event = ev_view_button_press_event;
4375         widget_class->motion_notify_event = ev_view_motion_notify_event;
4376         widget_class->button_release_event = ev_view_button_release_event;
4377         widget_class->key_press_event = ev_view_key_press_event;
4378         widget_class->focus_in_event = ev_view_focus_in;
4379         widget_class->focus_out_event = ev_view_focus_out;
4380         widget_class->get_accessible = ev_view_get_accessible;
4381         widget_class->size_request = ev_view_size_request;
4382         widget_class->size_allocate = ev_view_size_allocate;
4383         widget_class->realize = ev_view_realize;
4384         widget_class->scroll_event = ev_view_scroll_event;
4385         widget_class->enter_notify_event = ev_view_enter_notify_event;
4386         widget_class->leave_notify_event = ev_view_leave_notify_event;
4387         widget_class->style_set = ev_view_style_set;
4388         widget_class->drag_data_get = ev_view_drag_data_get;
4389         widget_class->drag_motion = ev_view_drag_motion;
4390         widget_class->popup_menu = ev_view_popup_menu;
4391         widget_class->query_tooltip = ev_view_query_tooltip;
4392
4393         gtk_object_class->destroy = ev_view_destroy;
4394
4395         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4396
4397         class->binding_activated = ev_view_scroll;
4398
4399         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4400                          G_TYPE_FROM_CLASS (object_class),
4401                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4402                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4403                          NULL, NULL,
4404                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4405                          G_TYPE_NONE, 2,
4406                          GTK_TYPE_SCROLL_TYPE,
4407                          G_TYPE_BOOLEAN);
4408         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4409                          G_TYPE_FROM_CLASS (object_class),
4410                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4411                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4412                          NULL, NULL,
4413                          g_cclosure_marshal_VOID__OBJECT,
4414                          G_TYPE_NONE, 1,
4415                          G_TYPE_OBJECT);
4416         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4417                          G_TYPE_FROM_CLASS (object_class),
4418                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4419                          G_STRUCT_OFFSET (EvViewClass, external_link),
4420                          NULL, NULL,
4421                          g_cclosure_marshal_VOID__OBJECT,
4422                          G_TYPE_NONE, 1,
4423                          G_TYPE_OBJECT);
4424         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4425                          G_TYPE_FROM_CLASS (object_class),
4426                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4427                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4428                          NULL, NULL,
4429                          g_cclosure_marshal_VOID__POINTER,
4430                          G_TYPE_NONE, 1,
4431                          G_TYPE_POINTER);
4432         signals[SIGNAL_SELECTION_CHANGED] = g_signal_new ("selection-changed",
4433                          G_TYPE_FROM_CLASS (object_class),
4434                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4435                          G_STRUCT_OFFSET (EvViewClass, selection_changed),
4436                          NULL, NULL,
4437                          g_cclosure_marshal_VOID__VOID,
4438                          G_TYPE_NONE, 0,
4439                          G_TYPE_NONE);
4440         signals[SIGNAL_SYNC_SOURCE] = g_signal_new ("sync-source",
4441                          G_TYPE_FROM_CLASS (object_class),
4442                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4443                          G_STRUCT_OFFSET (EvViewClass, sync_source),
4444                          NULL, NULL,
4445                          g_cclosure_marshal_VOID__POINTER,
4446                          G_TYPE_NONE, 1,
4447                          G_TYPE_POINTER);
4448
4449         binding_set = gtk_binding_set_by_class (class);
4450
4451         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4452         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4453         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4454         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4455         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4456         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4457         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4458         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4459         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4460                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4461         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4462                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4463         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4464                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4465         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4466                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4467
4468 }
4469
4470 static void
4471 ev_view_init (EvView *view)
4472 {
4473         gtk_widget_set_can_focus (GTK_WIDGET (view), TRUE);
4474
4475         view->start_page = -1;
4476         view->end_page = -1;
4477         view->spacing = 5;
4478         view->scale = 1.0;
4479         view->current_page = 0;
4480         view->pressed_button = -1;
4481         view->cursor = EV_VIEW_CURSOR_NORMAL;
4482         view->drag_info.in_drag = FALSE;
4483         view->scroll_info.autoscrolling = FALSE;
4484         view->selection_info.selections = NULL;
4485         view->selection_info.in_selection = FALSE;
4486         view->selection_info.in_drag = FALSE;
4487         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4488         view->continuous = TRUE;
4489         view->dual_page = FALSE;
4490         view->fullscreen = FALSE;
4491         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4492         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4493         view->jump_to_find_result = TRUE;
4494         view->highlight_find_results = FALSE;
4495
4496         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4497         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4498 }
4499
4500 /*** Callbacks ***/
4501
4502 static void
4503 ev_view_change_page (EvView *view,
4504                      gint    new_page)
4505 {
4506         gint x, y;
4507
4508         view->current_page = new_page;
4509         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4510
4511         hide_loading_window (view);
4512
4513         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4514         ev_view_handle_cursor_over_xy (view, x, y);
4515
4516         gtk_widget_queue_resize (GTK_WIDGET (view));
4517 }
4518
4519 static void
4520 job_finished_cb (EvPixbufCache  *pixbuf_cache,
4521                  cairo_region_t *region,
4522                  EvView         *view)
4523 {
4524         if (region) {
4525                 GdkWindow *bin_window;
4526
4527                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4528                 gdk_window_invalidate_region (bin_window, region, TRUE);
4529         } else {
4530                 gtk_widget_queue_draw (GTK_WIDGET (view));
4531         }
4532 }
4533
4534 static void
4535 ev_view_page_changed_cb (EvDocumentModel *model,
4536                          gint             old_page,
4537                          gint             new_page,
4538                          EvView          *view)
4539 {
4540         if (!view->document)
4541                 return;
4542
4543         if (view->current_page != new_page) {
4544                 ev_view_change_page (view, new_page);
4545         } else {
4546                 gtk_widget_queue_draw (GTK_WIDGET (view));
4547         }
4548
4549         view->find_result = 0;
4550 }
4551
4552 static void
4553 on_adjustment_value_changed (GtkAdjustment *adjustment,
4554                              EvView        *view)
4555 {
4556         int dx = 0, dy = 0;
4557         gint x, y;
4558         gint value;
4559         GList *children, *l;
4560
4561         if (!gtk_widget_get_realized (GTK_WIDGET (view)))
4562                 return;
4563
4564         if (view->hadjustment) {
4565                 value = (gint) gtk_adjustment_get_value (view->hadjustment);
4566                 dx = view->scroll_x - value;
4567                 view->scroll_x = value;
4568         } else {
4569                 view->scroll_x = 0;
4570         }
4571
4572         if (view->vadjustment) {
4573                 value = (gint) gtk_adjustment_get_value (view->vadjustment);
4574                 dy = view->scroll_y - value;
4575                 view->scroll_y = value;
4576         } else {
4577                 view->scroll_y = 0;
4578         }
4579
4580         children = gtk_container_get_children (GTK_CONTAINER (view));
4581         for (l = children; l && l->data; l = g_list_next (l)) {
4582                 gint       child_x, child_y;
4583                 GtkWidget *child = (GtkWidget *)l->data;
4584
4585                 gtk_container_child_get (GTK_CONTAINER (view),
4586                                          child,
4587                                          "x", &child_x,
4588                                          "y", &child_y,
4589                                          NULL);
4590                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4591         }
4592         g_list_free (children);
4593
4594         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4595                 EvViewWindowChild *child;
4596
4597                 child = (EvViewWindowChild *)l->data;
4598
4599                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4600         }
4601
4602         if (view->pending_resize) {
4603                 gtk_widget_queue_draw (GTK_WIDGET (view));
4604         } else {
4605                 GdkWindow *bin_window;
4606
4607                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4608                 gdk_window_scroll (bin_window, dx, dy);
4609         }
4610
4611         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4612         ev_view_handle_cursor_over_xy (view, x, y);
4613
4614         if (view->document)
4615                 view_update_range_and_current_page (view);
4616 }
4617
4618 GtkWidget*
4619 ev_view_new (void)
4620 {
4621         GtkWidget *view;
4622
4623         view = g_object_new (EV_TYPE_VIEW, NULL);
4624
4625         return view;
4626 }
4627
4628 static void
4629 setup_caches (EvView *view)
4630 {
4631         gboolean inverted_colors;
4632
4633         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
4634         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->model, view->pixbuf_cache_size);
4635         view->page_cache = ev_page_cache_new (view->document);
4636         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4637         ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
4638         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4639 }
4640
4641 static void
4642 clear_caches (EvView *view)
4643 {
4644         if (view->pixbuf_cache) {
4645                 g_object_unref (view->pixbuf_cache);
4646                 view->pixbuf_cache = NULL;
4647         }
4648
4649         if (view->page_cache) {
4650                 g_object_unref (view->page_cache);
4651                 view->page_cache = NULL;
4652         }
4653 }
4654
4655 /**
4656  * ev_view_set_page_cache_size:
4657  * @view:
4658  * @cache_size:
4659  *
4660  * Sets the maximum size in bytes that will be used to cache
4661  * rendered pages. Use 0 to disable caching rendered pages.
4662  *
4663  * Note that this limit doesn't affect the current visible page range,
4664  * which will always be rendered. In order to limit the total memory used
4665  * you have to use ev_document_model_set_max_scale() too.
4666  *
4667  */
4668 void
4669 ev_view_set_page_cache_size (EvView *view,
4670                              gsize   cache_size)
4671 {
4672         if (view->pixbuf_cache_size == cache_size)
4673                 return;
4674
4675         view->pixbuf_cache_size = cache_size;
4676         if (view->pixbuf_cache)
4677                 ev_pixbuf_cache_set_max_size (view->pixbuf_cache, cache_size);
4678 }
4679
4680 void
4681 ev_view_set_loading (EvView       *view,
4682                      gboolean      loading)
4683 {
4684         if (view->loading && !loading)
4685                 hide_loading_window (view);
4686         view->loading = loading;
4687         gtk_widget_queue_draw (GTK_WIDGET (view));
4688 }
4689
4690 static gboolean
4691 ev_view_autoscroll_cb (EvView *view)
4692 {
4693         gdouble speed, value;
4694
4695         /* If the user stops autoscrolling, autoscrolling will be
4696          * set to false but the timeout will continue; stop the timeout: */
4697         if (!view->scroll_info.autoscrolling) {
4698                 view->scroll_info.timeout_id = 0;
4699                 return FALSE;
4700         }
4701
4702         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4703                 (view->scroll_info.last_y < view->scroll_info.start_y))
4704                 return TRUE;
4705
4706         /* Replace 100 with your speed of choice: The lower the faster.
4707          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4708          *      based on the distance of the starting point from the mouse
4709          * (All also effected by the timeout interval of this callback) */
4710
4711         if (view->scroll_info.start_y > view->scroll_info.last_y)
4712                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4713         else
4714                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4715
4716         value = gtk_adjustment_get_value (view->vadjustment);
4717         value = CLAMP (value + speed, 0,
4718                        gtk_adjustment_get_upper (view->vadjustment) -
4719                        gtk_adjustment_get_page_size (view->vadjustment));
4720         gtk_adjustment_set_value (view->vadjustment, value);
4721
4722         return TRUE;
4723
4724 }
4725
4726 void
4727 ev_view_autoscroll_start (EvView *view)
4728 {
4729         gint x, y;
4730
4731         g_return_if_fail (EV_IS_VIEW (view));
4732
4733         if (view->scroll_info.autoscrolling)
4734                 return;
4735
4736         view->scroll_info.autoscrolling = TRUE;
4737         view->scroll_info.timeout_id =
4738                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4739                                view);
4740
4741         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4742         ev_view_handle_cursor_over_xy (view, x, y);
4743 }
4744
4745 void
4746 ev_view_autoscroll_stop (EvView *view)
4747 {
4748         gint x, y;
4749
4750         g_return_if_fail (EV_IS_VIEW (view));
4751
4752         if (!view->scroll_info.autoscrolling)
4753                 return;
4754
4755         view->scroll_info.autoscrolling = FALSE;
4756         if (view->scroll_info.timeout_id) {
4757                 g_source_remove (view->scroll_info.timeout_id);
4758                 view->scroll_info.timeout_id = 0;
4759         }
4760
4761         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4762         ev_view_handle_cursor_over_xy (view, x, y);
4763 }
4764
4765 static void
4766 ev_view_document_changed_cb (EvDocumentModel *model,
4767                              GParamSpec      *pspec,
4768                              EvView          *view)
4769 {
4770         EvDocument *document = ev_document_model_get_document (model);
4771
4772         if (document != view->document) {
4773                 gint current_page;
4774
4775                 clear_caches (view);
4776
4777                 if (view->document) {
4778                         g_object_unref (view->document);
4779                 }
4780
4781                 view->document = document;
4782                 view->find_result = 0;
4783
4784                 if (view->document) {
4785                         view->loading = FALSE;
4786                         g_object_ref (view->document);
4787                         setup_caches (view);
4788                 }
4789
4790                 current_page = ev_document_model_get_page (model);
4791                 if (view->current_page != current_page) {
4792                         ev_view_change_page (view, current_page);
4793                 } else {
4794                         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4795                         gtk_widget_queue_resize (GTK_WIDGET (view));
4796                 }
4797         }
4798 }
4799
4800 static void
4801 ev_view_rotation_changed_cb (EvDocumentModel *model,
4802                              GParamSpec      *pspec,
4803                              EvView          *view)
4804 {
4805         gint rotation = ev_document_model_get_rotation (model);
4806
4807         view->rotation = rotation;
4808
4809         if (view->pixbuf_cache) {
4810                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4811                 if (!ev_document_is_page_size_uniform (view->document))
4812                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4813                 gtk_widget_queue_resize (GTK_WIDGET (view));
4814         }
4815
4816         ev_view_remove_all (view);
4817
4818         if (rotation != 0)
4819                 clear_selection (view);
4820 }
4821
4822 static void
4823 ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
4824                                     GParamSpec      *pspec,
4825                                     EvView          *view)
4826 {
4827         if (view->pixbuf_cache) {
4828                 gboolean inverted_colors;
4829
4830                 inverted_colors = ev_document_model_get_inverted_colors (model);
4831                 ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
4832                 gtk_widget_queue_draw (GTK_WIDGET (view));
4833         }
4834 }
4835
4836 static void
4837 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
4838                                 GParamSpec      *pspec,
4839                                 EvView          *view)
4840 {
4841         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
4842
4843         view->sizing_mode = mode;
4844         if (mode != EV_SIZING_FREE)
4845                 gtk_widget_queue_resize (GTK_WIDGET (view));
4846 }
4847
4848 #define EPSILON 0.0000001
4849 static void
4850 ev_view_scale_changed_cb (EvDocumentModel *model,
4851                           GParamSpec      *pspec,
4852                           EvView          *view)
4853 {
4854         gdouble scale = ev_document_model_get_scale (model);
4855
4856         if (ABS (view->scale - scale) < EPSILON)
4857                 return;
4858
4859         view->scale = scale;
4860
4861         view->pending_resize = TRUE;
4862         if (view->sizing_mode == EV_SIZING_FREE)
4863                 gtk_widget_queue_resize (GTK_WIDGET (view));
4864 }
4865
4866 static void
4867 ev_view_continuous_changed_cb (EvDocumentModel *model,
4868                                GParamSpec      *pspec,
4869                                EvView          *view)
4870 {
4871         gboolean continuous = ev_document_model_get_continuous (model);
4872
4873         view->continuous = continuous;
4874         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4875         gtk_widget_queue_resize (GTK_WIDGET (view));
4876 }
4877
4878 static void
4879 ev_view_dual_page_changed_cb (EvDocumentModel *model,
4880                               GParamSpec      *pspec,
4881                               EvView          *view)
4882 {
4883         gboolean dual_page = ev_document_model_get_dual_page (model);
4884
4885         view->dual_page = dual_page;
4886         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4887         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4888          * preload_cache_size to be 2 if dual_page is set.
4889          */
4890         gtk_widget_queue_resize (GTK_WIDGET (view));
4891 }
4892
4893 static void
4894 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
4895                                GParamSpec      *pspec,
4896                                EvView          *view)
4897 {
4898         gboolean fullscreen = ev_document_model_get_fullscreen (model);
4899
4900         view->fullscreen = fullscreen;
4901         gtk_widget_queue_resize (GTK_WIDGET (view));
4902 }
4903
4904 void
4905 ev_view_set_model (EvView          *view,
4906                    EvDocumentModel *model)
4907 {
4908         g_return_if_fail (EV_IS_VIEW (view));
4909         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
4910
4911         if (model == view->model)
4912                 return;
4913
4914         if (view->model) {
4915                 g_signal_handlers_disconnect_by_func (view->model,
4916                                                       ev_view_document_changed_cb,
4917                                                       view);
4918                 g_signal_handlers_disconnect_by_func (view->model,
4919                                                       ev_view_page_changed_cb,
4920                                                       view);
4921                 g_object_unref (view->model);
4922         }
4923         view->model = g_object_ref (model);
4924
4925         /* Initialize view from model */
4926         view->rotation = ev_document_model_get_rotation (view->model);
4927         view->sizing_mode = ev_document_model_get_sizing_mode (view->model);
4928         view->scale = ev_document_model_get_scale (view->model);
4929         view->continuous = ev_document_model_get_continuous (view->model);
4930         view->dual_page = ev_document_model_get_dual_page (view->model);
4931         view->fullscreen = ev_document_model_get_fullscreen (view->model);
4932         ev_view_document_changed_cb (view->model, NULL, view);
4933
4934         g_signal_connect (view->model, "notify::document",
4935                           G_CALLBACK (ev_view_document_changed_cb),
4936                           view);
4937         g_signal_connect (view->model, "notify::rotation",
4938                           G_CALLBACK (ev_view_rotation_changed_cb),
4939                           view);
4940         g_signal_connect (view->model, "notify::inverted-colors",
4941                           G_CALLBACK (ev_view_inverted_colors_changed_cb),
4942                           view);
4943         g_signal_connect (view->model, "notify::sizing-mode",
4944                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
4945                           view);
4946         g_signal_connect (view->model, "notify::scale",
4947                           G_CALLBACK (ev_view_scale_changed_cb),
4948                           view);
4949         g_signal_connect (view->model, "notify::continuous",
4950                           G_CALLBACK (ev_view_continuous_changed_cb),
4951                           view);
4952         g_signal_connect (view->model, "notify::dual-page",
4953                           G_CALLBACK (ev_view_dual_page_changed_cb),
4954                           view);
4955         g_signal_connect (view->model, "notify::fullscreen",
4956                           G_CALLBACK (ev_view_fullscreen_changed_cb),
4957                           view);
4958         g_signal_connect (view->model, "page-changed",
4959                           G_CALLBACK (ev_view_page_changed_cb),
4960                           view);
4961 }
4962
4963 static void
4964 ev_view_reload_page (EvView         *view,
4965                      gint            page,
4966                      cairo_region_t *region)
4967 {
4968         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
4969                                      region,
4970                                      page,
4971                                      view->rotation,
4972                                      view->scale);
4973 }
4974
4975 void
4976 ev_view_reload (EvView *view)
4977 {
4978         ev_pixbuf_cache_clear (view->pixbuf_cache);
4979         view_update_range_and_current_page (view);
4980 }
4981
4982 /*** Zoom and sizing mode ***/
4983
4984 gboolean
4985 ev_view_can_zoom_in (EvView *view)
4986 {
4987         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
4988 }
4989
4990 gboolean
4991 ev_view_can_zoom_out (EvView *view)
4992 {
4993         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
4994 }
4995
4996 void
4997 ev_view_zoom_in (EvView *view)
4998 {
4999         gdouble scale;
5000
5001         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5002
5003         view->pending_scroll = SCROLL_TO_CENTER;
5004         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
5005         ev_document_model_set_scale (view->model, scale);
5006 }
5007
5008 void
5009 ev_view_zoom_out (EvView *view)
5010 {
5011         gdouble scale;
5012
5013         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5014
5015         view->pending_scroll = SCROLL_TO_CENTER;
5016         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5017         ev_document_model_set_scale (view->model, scale);
5018 }
5019
5020 static double
5021 zoom_for_size_fit_width (gdouble doc_width,
5022                          gdouble doc_height,
5023                          int     target_width,
5024                          int     target_height)
5025 {
5026         return (double)target_width / doc_width;
5027 }
5028
5029 static double
5030 zoom_for_size_fit_height (gdouble doc_width,
5031                           gdouble doc_height,
5032                           int     target_width,
5033                           int     target_height)
5034 {
5035         return (double)target_height / doc_height;
5036 }
5037
5038 static double
5039 zoom_for_size_best_fit (gdouble doc_width,
5040                         gdouble doc_height,
5041                         int     target_width,
5042                         int     target_height)
5043 {
5044         double w_scale;
5045         double h_scale;
5046
5047         w_scale = (double)target_width / doc_width;
5048         h_scale = (double)target_height / doc_height;
5049
5050         return MIN (w_scale, h_scale);
5051 }
5052
5053 static void
5054 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5055                                                 int     width,
5056                                                 int     height)
5057 {
5058         gdouble doc_width, doc_height;
5059         GtkBorder border;
5060         gdouble scale;
5061         gint sb_size;
5062
5063         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5064         if (view->rotation == 90 || view->rotation == 270) {
5065                 gdouble tmp;
5066
5067                 tmp = doc_width;
5068                 doc_width = doc_height;
5069                 doc_height = tmp;
5070         }
5071
5072         compute_border (view, doc_width, doc_height, &border);
5073
5074         doc_width *= 2;
5075         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5076         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5077
5078         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5079
5080         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5081                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5082         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5083                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5084         else
5085                 g_assert_not_reached ();
5086
5087         ev_document_model_set_scale (view->model, scale);
5088 }
5089
5090 static void
5091 ev_view_zoom_for_size_continuous (EvView *view,
5092                                   int     width,
5093                                   int     height)
5094 {
5095         gdouble doc_width, doc_height;
5096         GtkBorder border;
5097         gdouble scale;
5098         gint sb_size;
5099
5100         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5101         if (view->rotation == 90 || view->rotation == 270) {
5102                 gdouble tmp;
5103
5104                 tmp = doc_width;
5105                 doc_width = doc_height;
5106                 doc_height = tmp;
5107         }
5108
5109         compute_border (view, doc_width, doc_height, &border);
5110
5111         width -= (border.left + border.right + 2 * view->spacing);
5112         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5113
5114         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5115
5116         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5117                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5118         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5119                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5120         else
5121                 g_assert_not_reached ();
5122
5123         ev_document_model_set_scale (view->model, scale);
5124 }
5125
5126 static void
5127 ev_view_zoom_for_size_dual_page (EvView *view,
5128                                  int     width,
5129                                  int     height)
5130 {
5131         GtkBorder border;
5132         gdouble doc_width, doc_height;
5133         gdouble scale;
5134         gint other_page;
5135
5136         other_page = view->current_page ^ 1;
5137
5138         /* Find the largest of the two. */
5139         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5140         if (other_page < ev_document_get_n_pages (view->document)) {
5141                 gdouble width_2, height_2;
5142
5143                 get_doc_page_size (view, other_page, &width_2, &height_2);
5144                 if (width_2 > doc_width)
5145                         doc_width = width_2;
5146                 if (height_2 > doc_height)
5147                         doc_height = height_2;
5148         }
5149         compute_border (view, width, height, &border);
5150
5151         doc_width = doc_width * 2;
5152         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5153         height -= (border.top + border.bottom + 2 * view->spacing);
5154
5155         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5156                 gint sb_size;
5157
5158                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5159                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5160         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5161                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5162         else
5163                 g_assert_not_reached ();
5164
5165         ev_document_model_set_scale (view->model, scale);
5166 }
5167
5168 static void
5169 ev_view_zoom_for_size_single_page (EvView *view,
5170                                    int     width,
5171                                    int     height)
5172 {
5173         gdouble doc_width, doc_height;
5174         GtkBorder border;
5175         gdouble scale;
5176
5177         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5178
5179         /* Get an approximate border */
5180         compute_border (view, width, height, &border);
5181
5182         width -= (border.left + border.right + 2 * view->spacing);
5183         height -= (border.top + border.bottom + 2 * view->spacing);
5184
5185         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5186                 gint sb_size;
5187
5188                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5189                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5190         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5191                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5192         else
5193                 g_assert_not_reached ();
5194
5195         ev_document_model_set_scale (view->model, scale);
5196 }
5197
5198 static void
5199 ev_view_zoom_for_size (EvView *view,
5200                        int     width,
5201                        int     height)
5202 {
5203         g_return_if_fail (EV_IS_VIEW (view));
5204         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5205                           view->sizing_mode == EV_SIZING_BEST_FIT);
5206         g_return_if_fail (width >= 0);
5207         g_return_if_fail (height >= 0);
5208
5209         if (view->document == NULL)
5210                 return;
5211
5212         if (view->continuous && view->dual_page)
5213                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5214         else if (view->continuous)
5215                 ev_view_zoom_for_size_continuous (view, width, height);
5216         else if (view->dual_page)
5217                 ev_view_zoom_for_size_dual_page (view, width, height);
5218         else
5219                 ev_view_zoom_for_size_single_page (view, width, height);
5220 }
5221
5222 /*** Find ***/
5223 static gint
5224 ev_view_find_get_n_results (EvView *view, gint page)
5225 {
5226         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5227 }
5228
5229 static EvRectangle *
5230 ev_view_find_get_result (EvView *view, gint page, gint result)
5231 {
5232         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5233 }
5234
5235 static void
5236 jump_to_find_result (EvView *view)
5237 {
5238         gint n_results;
5239         gint page = view->current_page;
5240
5241         n_results = ev_view_find_get_n_results (view, page);
5242
5243         if (n_results > 0 && view->find_result < n_results) {
5244                 EvRectangle *rect;
5245                 GdkRectangle view_rect;
5246
5247                 rect = ev_view_find_get_result (view, page, view->find_result);
5248                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5249                 ensure_rectangle_is_visible (view, &view_rect);
5250                 view->jump_to_find_result = FALSE;
5251         }
5252 }
5253
5254 /**
5255  * jump_to_find_page
5256  * @view: #EvView instance
5257  * @direction: Direction to look
5258  * @shift: Shift from current page
5259  *
5260  * Jumps to the first page that has occurences of searched word.
5261  * Uses a direction where to look and a shift from current page.
5262  *
5263  */
5264 static void
5265 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5266 {
5267         int n_pages, i;
5268
5269         n_pages = ev_document_get_n_pages (view->document);
5270
5271         for (i = 0; i < n_pages; i++) {
5272                 int page;
5273
5274                 if (direction == EV_VIEW_FIND_NEXT)
5275                         page = view->current_page + i;
5276                 else
5277                         page = view->current_page - i;
5278                 page += shift;
5279
5280                 if (page >= n_pages) {
5281                         page = page - n_pages;
5282                 } else if (page < 0)
5283                         page = page + n_pages;
5284
5285                 if (ev_view_find_get_n_results (view, page) > 0) {
5286                         ev_document_model_set_page (view->model, page);
5287                         break;
5288                 }
5289         }
5290 }
5291
5292 void
5293 ev_view_find_changed (EvView *view, GList **results, gint page)
5294 {
5295         view->find_pages = results;
5296
5297         if (view->jump_to_find_result == TRUE) {
5298                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5299                 jump_to_find_result (view);
5300         }
5301
5302         if (view->current_page == page)
5303                 gtk_widget_queue_draw (GTK_WIDGET (view));
5304 }
5305
5306 void
5307 ev_view_find_next (EvView *view)
5308 {
5309         gint n_results;
5310
5311         n_results = ev_view_find_get_n_results (view, view->current_page);
5312         view->find_result++;
5313
5314         if (view->find_result >= n_results) {
5315                 view->find_result = 0;
5316                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5317                 jump_to_find_result (view);
5318         } else {
5319                 jump_to_find_result (view);
5320                 gtk_widget_queue_draw (GTK_WIDGET (view));
5321         }
5322 }
5323
5324 void
5325 ev_view_find_previous (EvView *view)
5326 {
5327         view->find_result--;
5328
5329         if (view->find_result < 0) {
5330                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5331                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5332                 jump_to_find_result (view);
5333         } else {
5334                 jump_to_find_result (view);
5335                 gtk_widget_queue_draw (GTK_WIDGET (view));
5336         }
5337 }
5338
5339 void
5340 ev_view_find_search_changed (EvView *view)
5341 {
5342         /* search string has changed, focus on new search result */
5343         view->jump_to_find_result = TRUE;
5344         view->find_pages = NULL;
5345 }
5346
5347 void
5348 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5349 {
5350         view->highlight_find_results = value;
5351         gtk_widget_queue_draw (GTK_WIDGET (view));
5352 }
5353
5354 void
5355 ev_view_find_cancel (EvView *view)
5356 {
5357         view->find_pages = NULL;
5358 }
5359
5360 /*** Synctex ***/
5361 void
5362 ev_view_highlight_forward_search (EvView       *view,
5363                                   EvSourceLink *link)
5364 {
5365         EvMapping   *mapping;
5366         gint         page;
5367         GdkRectangle view_rect;
5368
5369         if (!ev_document_has_synctex (view->document))
5370                 return;
5371
5372         mapping = ev_document_synctex_forward_search (view->document, link);
5373         if (!mapping)
5374                 return;
5375
5376         if (view->synctex_result)
5377                 g_free (view->synctex_result);
5378         view->synctex_result = mapping;
5379
5380         page = GPOINTER_TO_INT (mapping->data);
5381         ev_document_model_set_page (view->model, page);
5382
5383         doc_rect_to_view_rect (view, page, &mapping->area, &view_rect);
5384         ensure_rectangle_is_visible (view, &view_rect);
5385         gtk_widget_queue_draw (GTK_WIDGET (view));
5386 }
5387
5388 /*** Selections ***/
5389
5390 /* compute_new_selection_rect/text calculates the area currently selected by
5391  * view_rect.  each handles a different mode;
5392  */
5393 static GList *
5394 compute_new_selection_rect (EvView       *view,
5395                             GdkPoint     *start,
5396                             GdkPoint     *stop)
5397 {
5398         GdkRectangle view_rect;
5399         int n_pages, i;
5400         GList *list = NULL;
5401
5402         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5403
5404         view_rect.x = MIN (start->x, stop->x);
5405         view_rect.y = MIN (start->y, stop->y);
5406         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5407         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5408
5409         n_pages = ev_document_get_n_pages (view->document);
5410
5411         for (i = 0; i < n_pages; i++) {
5412                 GdkRectangle page_area;
5413                 GtkBorder border;
5414
5415                 if (ev_view_get_page_extents (view, i, &page_area, &border)) {
5416                         GdkRectangle overlap;
5417
5418                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5419                                 EvViewSelection *selection;
5420
5421                                 selection = g_new0 (EvViewSelection, 1);
5422                                 selection->page = i;
5423                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5424                                                        &(selection->rect));
5425
5426                                 list = g_list_append (list, selection);
5427                         }
5428                 }
5429         }
5430
5431         return list;
5432 }
5433
5434 static gboolean
5435 gdk_rectangle_point_in (GdkRectangle *rectangle,
5436                         GdkPoint     *point)
5437 {
5438         return rectangle->x <= point->x &&
5439                 rectangle->y <= point->y &&
5440                 point->x < rectangle->x + rectangle->width &&
5441                 point->y < rectangle->y + rectangle->height;
5442 }
5443
5444 static GList *
5445 compute_new_selection_text (EvView          *view,
5446                             EvSelectionStyle style,
5447                             GdkPoint        *start,
5448                             GdkPoint        *stop)
5449 {
5450         int n_pages, i, first, last;
5451         GList *list = NULL;
5452         EvViewSelection *selection;
5453         gdouble width, height;
5454         int start_page, end_page;
5455
5456         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5457
5458         n_pages = ev_document_get_n_pages (view->document);
5459
5460         /* First figure out the range of pages the selection
5461          * affects. */
5462         first = n_pages;
5463         last = 0;
5464         if (view->continuous) {
5465                 start_page = 0;
5466                 end_page = n_pages;
5467         } else if (view->dual_page) {
5468                 start_page = view->start_page;
5469                 end_page = view->end_page + 1;
5470         } else {
5471                 start_page = view->current_page;
5472                 end_page = view->current_page + 1;
5473         }
5474
5475         for (i = start_page; i < end_page; i++) {
5476                 GdkRectangle page_area;
5477                 GtkBorder border;
5478
5479                 ev_view_get_page_extents (view, i, &page_area, &border);
5480                 if (gdk_rectangle_point_in (&page_area, start) ||
5481                     gdk_rectangle_point_in (&page_area, stop)) {
5482                         if (first == n_pages)
5483                                 first = i;
5484                         last = i;
5485                 }
5486
5487         }
5488
5489         /* Now create a list of EvViewSelection's for the affected
5490          * pages.  This could be an empty list, a list of just one
5491          * page or a number of pages.*/
5492         for (i = first; i < last + 1; i++) {
5493                 GdkRectangle page_area;
5494                 GtkBorder border;
5495                 GdkPoint *point;
5496
5497                 get_doc_page_size (view, i, &width, &height);
5498
5499                 selection = g_new0 (EvViewSelection, 1);
5500                 selection->page = i;
5501                 selection->style = style;
5502                 selection->rect.x1 = selection->rect.y1 = 0;
5503                 selection->rect.x2 = width;
5504                 selection->rect.y2 = height;
5505
5506                 ev_view_get_page_extents (view, i, &page_area, &border);
5507
5508                 if (gdk_rectangle_point_in (&page_area, start))
5509                         point = start;
5510                 else
5511                         point = stop;
5512
5513                 if (i == first)
5514                         view_point_to_doc_point (view, point, &page_area,
5515                                                  &selection->rect.x1,
5516                                                  &selection->rect.y1);
5517
5518                 /* If the selection is contained within just one page,
5519                  * make sure we don't write 'start' into both points
5520                  * in selection->rect. */
5521                 if (first == last)
5522                         point = stop;
5523
5524                 if (i == last)
5525                         view_point_to_doc_point (view, point, &page_area,
5526                                                  &selection->rect.x2,
5527                                                  &selection->rect.y2);
5528
5529                 list = g_list_append (list, selection);
5530         }
5531
5532         return list;
5533 }
5534
5535 /* This function takes the newly calculated list, and figures out which regions
5536  * have changed.  It then queues a redraw approporiately.
5537  */
5538 static void
5539 merge_selection_region (EvView *view,
5540                         GList  *new_list)
5541 {
5542         GList *old_list;
5543         GList *new_list_ptr, *old_list_ptr;
5544
5545         /* Update the selection */
5546         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5547         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5548         g_list_free (view->selection_info.selections);
5549         view->selection_info.selections = new_list;
5550         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5551         g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
5552
5553         new_list_ptr = new_list;
5554         old_list_ptr = old_list;
5555
5556         while (new_list_ptr || old_list_ptr) {
5557                 EvViewSelection *old_sel, *new_sel;
5558                 int cur_page;
5559                 cairo_region_t *region = NULL;
5560
5561                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5562                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5563
5564                 /* Assume that the lists are in order, and we run through them
5565                  * comparing them, one page at a time.  We come out with the
5566                  * first page we see. */
5567                 if (new_sel && old_sel) {
5568                         if (new_sel->page < old_sel->page) {
5569                                 new_list_ptr = new_list_ptr->next;
5570                                 old_sel = NULL;
5571                         } else if (new_sel->page > old_sel->page) {
5572                                 old_list_ptr = old_list_ptr->next;
5573                                 new_sel = NULL;
5574                         } else {
5575                                 new_list_ptr = new_list_ptr->next;
5576                                 old_list_ptr = old_list_ptr->next;
5577                         }
5578                 } else if (new_sel) {
5579                         new_list_ptr = new_list_ptr->next;
5580                 } else if (old_sel) {
5581                         old_list_ptr = old_list_ptr->next;
5582                 }
5583
5584                 g_assert (new_sel || old_sel);
5585
5586                 /* is the page we're looking at on the screen?*/
5587                 cur_page = new_sel ? new_sel->page : old_sel->page;
5588                 if (cur_page < view->start_page || cur_page > view->end_page)
5589                         continue;
5590
5591                 /* seed the cache with a new page.  We are going to need the new
5592                  * region too. */
5593                 if (new_sel) {
5594                         cairo_region_t *tmp_region = NULL;
5595
5596                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5597                                                                cur_page,
5598                                                                view->scale,
5599                                                                &tmp_region);
5600
5601                         if (tmp_region && !cairo_region_is_empty (tmp_region)) {
5602                                 new_sel->covered_region = cairo_region_reference (tmp_region);
5603                         }
5604                 }
5605
5606                 /* Now we figure out what needs redrawing */
5607                 if (old_sel && new_sel) {
5608                         if (old_sel->covered_region && new_sel->covered_region) {
5609                                 cairo_region_t *tbr;
5610
5611                                 /* We only want to redraw the areas that have
5612                                  * changed, so we xor the old and new regions
5613                                  * and redraw if it's different */
5614                                 region = cairo_region_copy (old_sel->covered_region);
5615                                 tbr = cairo_region_copy (new_sel->covered_region);
5616
5617                                 /* xor old_sel, new_sel*/
5618                                 cairo_region_subtract (tbr, region);
5619                                 cairo_region_subtract (region, new_sel->covered_region);
5620                                 cairo_region_union (region, tbr);
5621                                 cairo_region_destroy (tbr);
5622
5623                                 if (cairo_region_is_empty (region)) {
5624                                         cairo_region_destroy (region);
5625                                         region = NULL;
5626                                 } else {
5627                                         gint num_rectangles = cairo_region_num_rectangles (region);
5628                                         GdkRectangle r;
5629
5630                                         /* We need to make the damage region a little bigger
5631                                          * because the edges of the old selection might change
5632                                          */
5633                                         cairo_region_get_rectangle (region, 0, &r);
5634                                         r.x -= 5;
5635                                         r.width = 5;
5636                                         cairo_region_union_rectangle (region, &r);
5637
5638                                         cairo_region_get_rectangle (region, num_rectangles - 1, &r);
5639                                         r.x += r.width;
5640                                         r.width = 5;
5641                                         cairo_region_union_rectangle (region, &r);
5642                                 }
5643                         } else if (old_sel->covered_region) {
5644                                 region = cairo_region_copy (old_sel->covered_region);
5645                         } else if (new_sel->covered_region) {
5646                                 region = cairo_region_copy (new_sel->covered_region);
5647                         }
5648                 } else if (old_sel && !new_sel) {
5649                         if (old_sel->covered_region && !cairo_region_is_empty (old_sel->covered_region)) {
5650                                 region = cairo_region_copy (old_sel->covered_region);
5651                         }
5652                 } else if (!old_sel && new_sel) {
5653                         if (new_sel->covered_region && !cairo_region_is_empty (new_sel->covered_region)) {
5654                                 region = cairo_region_copy (new_sel->covered_region);
5655                         }
5656                 } else {
5657                         g_assert_not_reached ();
5658                 }
5659
5660                 /* Redraw the damaged region! */
5661                 if (region) {
5662                         GdkWindow   *bin_window;
5663                         GdkRectangle page_area;
5664                         GtkBorder    border;
5665
5666                         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
5667                         ev_view_get_page_extents (view, cur_page, &page_area, &border);
5668                         cairo_region_translate (region,
5669                                            page_area.x + border.left - view->scroll_x,
5670                                            page_area.y + border.top - view->scroll_y);
5671                         gdk_window_invalidate_region (bin_window, region, TRUE);
5672                         cairo_region_destroy (region);
5673                 }
5674         }
5675
5676         /* Free the old list, now that we're done with it. */
5677         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5678         g_list_free (old_list);
5679 }
5680
5681 static void
5682 compute_selections (EvView          *view,
5683                     EvSelectionStyle style,
5684                     GdkPoint        *start,
5685                     GdkPoint        *stop)
5686 {
5687         GList *list;
5688
5689         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5690                 list = compute_new_selection_rect (view, start, stop);
5691         else
5692                 list = compute_new_selection_text (view, style, start, stop);
5693         merge_selection_region (view, list);
5694 }
5695
5696 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5697  */
5698 static void
5699 selection_free (EvViewSelection *selection)
5700 {
5701         if (selection->covered_region)
5702                 cairo_region_destroy (selection->covered_region);
5703         g_free (selection);
5704 }
5705
5706 static void
5707 clear_selection (EvView *view)
5708 {
5709         if (view->selection_info.selections) {
5710                 g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5711                 g_list_free (view->selection_info.selections);
5712                 view->selection_info.selections = NULL;
5713
5714                 g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
5715         }
5716         view->selection_info.in_selection = FALSE;
5717         if (view->pixbuf_cache)
5718                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5719 }
5720
5721 void
5722 ev_view_select_all (EvView *view)
5723 {
5724         GList *selections = NULL;
5725         int n_pages, i;
5726
5727         /* Disable selection on rotated pages for the 0.4.0 series */
5728         if (view->rotation != 0)
5729                 return;
5730
5731         clear_selection (view);
5732
5733         n_pages = ev_document_get_n_pages (view->document);
5734         for (i = 0; i < n_pages; i++) {
5735                 gdouble width, height;
5736                 EvViewSelection *selection;
5737
5738                 get_doc_page_size (view, i, &width, &height);
5739
5740                 selection = g_new0 (EvViewSelection, 1);
5741                 selection->page = i;
5742                 selection->style = EV_SELECTION_STYLE_GLYPH;
5743                 selection->rect.x1 = selection->rect.y1 = 0;
5744                 selection->rect.x2 = width;
5745                 selection->rect.y2 = height;
5746
5747                 selections = g_list_append (selections, selection);
5748         }
5749
5750         merge_selection_region (view, selections);
5751         gtk_widget_queue_draw (GTK_WIDGET (view));
5752 }
5753
5754 gboolean
5755 ev_view_get_has_selection (EvView *view)
5756 {
5757         return view->selection_info.selections != NULL;
5758 }
5759
5760 static char *
5761 get_selected_text (EvView *view)
5762 {
5763         GString *text;
5764         GList *l;
5765         gchar *normalized_text;
5766
5767         text = g_string_new (NULL);
5768
5769         ev_document_doc_mutex_lock ();
5770
5771         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5772                 EvViewSelection *selection = (EvViewSelection *)l->data;
5773                 EvPage *page;
5774                 gchar *tmp;
5775
5776                 page = ev_document_get_page (view->document, selection->page);
5777                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5778                                                       page, selection->style,
5779                                                       &(selection->rect));
5780                 g_object_unref (page);
5781                 g_string_append (text, tmp);
5782                 g_free (tmp);
5783         }
5784
5785         ev_document_doc_mutex_unlock ();
5786
5787         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5788         g_string_free (text, TRUE);
5789         return normalized_text;
5790 }
5791
5792 static void
5793 ev_view_clipboard_copy (EvView      *view,
5794                         const gchar *text)
5795 {
5796         GtkClipboard *clipboard;
5797
5798         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5799                                               GDK_SELECTION_CLIPBOARD);
5800         gtk_clipboard_set_text (clipboard, text, -1);
5801 }
5802
5803 void
5804 ev_view_copy (EvView *ev_view)
5805 {
5806         char *text;
5807
5808         if (!EV_IS_SELECTION (ev_view->document))
5809                 return;
5810
5811         text = get_selected_text (ev_view);
5812         ev_view_clipboard_copy (ev_view, text);
5813         g_free (text);
5814 }
5815
5816 static void
5817 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5818                         GtkSelectionData *selection_data,
5819                         guint             info,
5820                         gpointer          data)
5821 {
5822         EvView *ev_view = EV_VIEW (data);
5823
5824         if (ev_view->link_selected) {
5825                 gtk_selection_data_set_text (selection_data,
5826                                              ev_link_action_get_uri (ev_view->link_selected),
5827                                              -1);
5828         } else if (EV_IS_SELECTION (ev_view->document) &&
5829                    ev_view->selection_info.selections) {
5830                 gchar *text;
5831
5832                 text = get_selected_text (ev_view);
5833                 if (text) {
5834                         gtk_selection_data_set_text (selection_data, text, -1);
5835                         g_free (text);
5836                 }
5837         }
5838 }
5839
5840 static void
5841 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5842                           gpointer      data)
5843 {
5844         EvView *view = EV_VIEW (data);
5845
5846         clear_selection (view);
5847         clear_link_selected (view);
5848 }
5849
5850 static void
5851 ev_view_update_primary_selection (EvView *ev_view)
5852 {
5853         GtkClipboard *clipboard;
5854
5855         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5856                                               GDK_SELECTION_PRIMARY);
5857
5858         if (ev_view->selection_info.selections || ev_view->link_selected) {
5859                 GtkTargetList *target_list;
5860                 GtkTargetEntry *targets;
5861                 int n_targets;
5862
5863                 target_list = gtk_target_list_new (NULL, 0);
5864                 gtk_target_list_add_text_targets (target_list, 0);
5865                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
5866                 gtk_target_list_unref (target_list);
5867
5868                 if (!gtk_clipboard_set_with_owner (clipboard,
5869                                                    targets, n_targets,
5870                                                    ev_view_primary_get_cb,
5871                                                    ev_view_primary_clear_cb,
5872                                                    G_OBJECT (ev_view)))
5873                         ev_view_primary_clear_cb (clipboard, ev_view);
5874
5875                 gtk_target_table_free (targets, n_targets);
5876         } else {
5877                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5878                         gtk_clipboard_clear (clipboard);
5879         }
5880 }
5881
5882 static void
5883 clear_link_selected (EvView *view)
5884 {
5885         if (view->link_selected) {
5886                 g_object_unref (view->link_selected);
5887                 view->link_selected = NULL;
5888         }
5889 }
5890
5891 void
5892 ev_view_copy_link_address (EvView       *view,
5893                            EvLinkAction *action)
5894 {
5895         clear_link_selected (view);
5896
5897         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5898
5899         view->link_selected = g_object_ref (action);
5900         ev_view_update_primary_selection (view);
5901 }
5902
5903 /*** Cursor operations ***/
5904 static void
5905 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5906 {
5907         GdkCursor *cursor = NULL;
5908         GtkWidget *widget;
5909         GdkWindow *bin_window;
5910
5911         if (view->cursor == new_cursor) {
5912                 return;
5913         }
5914
5915         view->cursor = new_cursor;
5916
5917         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
5918         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5919         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor);
5920         gdk_window_set_cursor (bin_window, cursor);
5921         gdk_flush ();
5922         if (cursor)
5923                 gdk_cursor_unref (cursor);
5924 }
5925
5926 void
5927 ev_view_hide_cursor (EvView *view)
5928 {
5929        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5930 }
5931
5932 void
5933 ev_view_show_cursor (EvView *view)
5934 {
5935        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5936 }
5937
5938 gboolean
5939 ev_view_next_page (EvView *view)
5940 {
5941         int page, n_pages;
5942
5943         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5944
5945         if (!view->document)
5946                 return FALSE;
5947
5948         page = ev_document_model_get_page (view->model);
5949         n_pages = ev_document_get_n_pages (view->document);
5950
5951         if (view->dual_page)
5952                 page = page + 2;
5953         else
5954                 page = page + 1;
5955
5956         if (page < n_pages) {
5957                 ev_document_model_set_page (view->model, page);
5958                 return TRUE;
5959         } else if (view->dual_page && page == n_pages) {
5960                 ev_document_model_set_page (view->model, page - 1);
5961                 return TRUE;
5962         } else {
5963                 return FALSE;
5964         }
5965 }
5966
5967 gboolean
5968 ev_view_previous_page (EvView *view)
5969 {
5970         int page;
5971
5972         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5973
5974         if (!view->document)
5975                 return FALSE;
5976
5977         page = ev_document_model_get_page (view->model);
5978
5979         if (view->dual_page)
5980                 page = page - 2;
5981         else
5982                 page = page - 1;
5983
5984         if (page >= 0) {
5985                 ev_document_model_set_page (view->model, page);
5986                 return TRUE;
5987         } else if (view->dual_page && page == -1) {
5988                 ev_document_model_set_page (view->model, 0);
5989                 return TRUE;
5990         } else {
5991                 return FALSE;
5992         }
5993 }
5994