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         child->x = x;
2404         child->y = y;
2405         gtk_window_move (GTK_WINDOW (child->window),
2406                          MAX (child->parent_x, x),
2407                          MAX (child->parent_y, y));
2408 }
2409
2410 static void
2411 ev_view_window_child_move_with_parent (EvView    *view,
2412                                        GtkWidget *window)
2413 {
2414         EvViewWindowChild *child;
2415         gint               root_x, root_y;
2416
2417         child = ev_view_get_window_child (view, window);
2418         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2419                                &root_x, &root_y);
2420         if (root_x != child->parent_x || root_y != child->parent_y) {
2421                 gint dest_x, dest_y;
2422
2423                 dest_x = child->x + (root_x - child->parent_x);
2424                 dest_y = child->y + (root_y - child->parent_y);
2425                 child->parent_x = root_x;
2426                 child->parent_y = root_y;
2427                 ev_view_window_child_move (view, child, dest_x, dest_y);
2428         }
2429
2430         if (child->visible && !gtk_widget_get_visible (window))
2431                 gtk_widget_show (window);
2432 }
2433
2434 static void
2435 ev_view_window_child_put (EvView    *view,
2436                           GtkWidget *window,
2437                           guint      page,
2438                           gint       x,
2439                           gint       y,
2440                           gdouble    orig_x,
2441                           gdouble    orig_y)
2442 {
2443         EvViewWindowChild *child;
2444         gint               root_x, root_y;
2445
2446         gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2447                                &root_x, &root_y);
2448
2449         child = g_new0 (EvViewWindowChild, 1);
2450         child->window = window;
2451         child->page = page;
2452         child->orig_x = orig_x;
2453         child->orig_y = orig_y;
2454         child->parent_x = root_x;
2455         child->parent_y = root_y;
2456         child->visible = ev_annotation_window_is_open (EV_ANNOTATION_WINDOW (window));
2457         ev_view_window_child_move (view, child, x + root_x, y + root_y);
2458
2459         if (child->visible)
2460                 gtk_widget_show (window);
2461         else
2462                 gtk_widget_hide (window);
2463
2464         view->window_children = g_list_append (view->window_children, child);
2465 }
2466
2467 static EvViewWindowChild *
2468 ev_view_find_window_child_for_annot (EvView       *view,
2469                                      guint         page,
2470                                      EvAnnotation *annot)
2471 {
2472         GList *children = view->window_children;
2473
2474         while (children) {
2475                 EvViewWindowChild *child;
2476                 EvAnnotation      *wannot;
2477
2478                 child = (EvViewWindowChild *)children->data;
2479                 children = children->next;
2480
2481                 if (child->page != page)
2482                         continue;
2483
2484                 wannot = ev_annotation_window_get_annotation (EV_ANNOTATION_WINDOW (child->window));
2485                 if (wannot == annot || strcmp (wannot->name, annot->name) == 0)
2486                         return child;
2487         }
2488
2489         return NULL;
2490 }
2491
2492 static void
2493 ev_view_window_children_free (EvView *view)
2494 {
2495         GList *l;
2496
2497         if (!view->window_children)
2498                 return;
2499
2500         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2501                 EvViewWindowChild *child;
2502
2503                 child = (EvViewWindowChild *)l->data;
2504                 gtk_widget_destroy (GTK_WIDGET (child->window));
2505                 g_free (child);
2506         }
2507         g_list_free (view->window_children);
2508         view->window_children = NULL;
2509         view->window_child_focus = NULL;
2510 }
2511
2512 static void
2513 annotation_window_grab_focus (GtkWidget *widget,
2514                               EvView    *view)
2515 {
2516         if (view->window_child_focus)
2517                 ev_annotation_window_ungrab_focus (EV_ANNOTATION_WINDOW (view->window_child_focus->window));
2518         view->window_child_focus = ev_view_get_window_child (view, widget);
2519 }
2520
2521 static void
2522 annotation_window_closed (EvAnnotationWindow *window,
2523                           EvView             *view)
2524 {
2525         EvViewWindowChild *child;
2526
2527         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2528         child->visible = FALSE;
2529 }
2530
2531 static void
2532 annotation_window_moved (EvAnnotationWindow *window,
2533                          gint                x,
2534                          gint                y,
2535                          EvView             *view)
2536 {
2537         EvViewWindowChild *child;
2538         GdkRectangle       page_area;
2539         GtkBorder          border;
2540         GdkRectangle       view_rect;
2541         EvRectangle        doc_rect;
2542         gint               width, height;
2543
2544         child = ev_view_get_window_child (view, GTK_WIDGET (window));
2545         if (child->x == x && child->y == y)
2546                 return;
2547
2548         child->moved = TRUE;
2549         child->x = x;
2550         child->y = y;
2551
2552         /* Window has been moved by the user,
2553          * we have to set a new origin in doc coords
2554          */
2555         gtk_window_get_size (GTK_WINDOW (window), &width, &height);
2556         view_rect.x = (x - child->parent_x) + view->scroll_x;
2557         view_rect.y = (y - child->parent_y) + view->scroll_y;
2558         view_rect.width = width;
2559         view_rect.height = height;
2560
2561         ev_view_get_page_extents (view, child->page, &page_area, &border);
2562         view_rect_to_doc_rect (view, &view_rect, &page_area, &doc_rect);
2563         child->orig_x = doc_rect.x1;
2564         child->orig_y = doc_rect.y1;
2565 }
2566
2567 static void
2568 ev_view_annotation_save (EvView       *view,
2569                          EvAnnotation *annot)
2570 {
2571         if (!view->document)
2572                 return;
2573
2574         if (!annot->changed)
2575                 return;
2576
2577         ev_document_annotations_annotation_set_contents (EV_DOCUMENT_ANNOTATIONS (view->document),
2578                                                          annot, annot->contents);
2579         annot->changed = FALSE;
2580 }
2581
2582 static void
2583 show_annotation_windows (EvView *view,
2584                          gint    page)
2585 {
2586         GList     *annots, *l;
2587         GtkWindow *parent;
2588
2589         parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
2590
2591         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2592
2593         for (l = annots; l && l->data; l = g_list_next (l)) {
2594                 EvAnnotation      *annot;
2595                 EvViewWindowChild *child;
2596                 GtkWidget         *window;
2597                 EvRectangle       *doc_rect;
2598                 GdkRectangle       view_rect;
2599
2600                 annot = ((EvMapping *)(l->data))->data;
2601
2602                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2603                         continue;
2604
2605                 if (!ev_annotation_markup_has_popup (EV_ANNOTATION_MARKUP (annot)))
2606                         continue;
2607
2608                 window = g_object_get_data (G_OBJECT (annot), "popup");
2609                 if (window) {
2610                         ev_view_window_child_move_with_parent (view, window);
2611                         continue;
2612                 }
2613
2614                 /* Look if we already have a popup for this annot */
2615                 child = ev_view_find_window_child_for_annot (view, page, annot);
2616                 window = child ? child->window : NULL;
2617                 if (window) {
2618                         ev_annotation_window_set_annotation (EV_ANNOTATION_WINDOW (window), annot);
2619                         g_object_set_data (G_OBJECT (annot), "popup", window);
2620                         ev_view_window_child_move_with_parent (view, window);
2621                 } else {
2622                         window = ev_annotation_window_new (annot, parent);
2623                         g_signal_connect (window, "grab_focus",
2624                                           G_CALLBACK (annotation_window_grab_focus),
2625                                           view);
2626                         g_signal_connect (window, "closed",
2627                                           G_CALLBACK (annotation_window_closed),
2628                                           view);
2629                         g_signal_connect (window, "moved",
2630                                           G_CALLBACK (annotation_window_moved),
2631                                           view);
2632                         g_object_set_data (G_OBJECT (annot), "popup", window);
2633
2634                         doc_rect = (EvRectangle *)ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (window));
2635                         doc_rect_to_view_rect (view, page, doc_rect, &view_rect);
2636                         view_rect.x -= view->scroll_x;
2637                         view_rect.y -= view->scroll_y;
2638
2639                         ev_view_window_child_put (view, window, page,
2640                                                   view_rect.x, view_rect.y,
2641                                                   doc_rect->x1, doc_rect->y1);
2642
2643                         g_object_weak_ref (G_OBJECT (annot),
2644                                            (GWeakNotify)ev_view_annotation_save,
2645                                            view);
2646                 }
2647         }
2648 }
2649
2650 static void
2651 hide_annotation_windows (EvView *view,
2652                          gint    page)
2653 {
2654         GList *annots, *l;
2655
2656         annots = ev_page_cache_get_annot_mapping (view->page_cache, page);
2657
2658         for (l = annots; l && l->data; l = g_list_next (l)) {
2659                 EvAnnotation *annot;
2660                 GtkWidget    *window;
2661
2662                 annot = ((EvMapping *)(l->data))->data;
2663
2664                 if (!EV_IS_ANNOTATION_MARKUP (annot))
2665                         continue;
2666
2667                 window = g_object_get_data (G_OBJECT (annot), "popup");
2668                 if (window)
2669                         gtk_widget_hide (window);
2670         }
2671 }
2672
2673 static EvAnnotation *
2674 ev_view_get_annotation_at_location (EvView  *view,
2675                                     gdouble  x,
2676                                     gdouble  y)
2677 {
2678         gint page = -1;
2679         gint x_new = 0, y_new = 0;
2680         GList *annotations_mapping;
2681
2682         if (!EV_IS_DOCUMENT_ANNOTATIONS (view->document))
2683                 return NULL;
2684
2685         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2686                 return NULL;
2687
2688         annotations_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
2689
2690         if (annotations_mapping)
2691                 return ev_mapping_list_get_data (annotations_mapping, x_new, y_new);
2692         else
2693                 return NULL;
2694 }
2695
2696 static void
2697 ev_view_handle_annotation (EvView       *view,
2698                            EvAnnotation *annot,
2699                            gdouble       x,
2700                            gdouble       y,
2701                            guint32       timestamp)
2702 {
2703         if (EV_IS_ANNOTATION_MARKUP (annot)) {
2704                 GtkWidget *window;
2705
2706                 window = g_object_get_data (G_OBJECT (annot), "popup");
2707                 if (window) {
2708                         EvViewWindowChild *child;
2709
2710                         child = ev_view_get_window_child (view, window);
2711                         if (!child->visible) {
2712                                 child->visible = TRUE;
2713                                 ev_view_window_child_move (view, child, child->x, child->y);
2714                                 gtk_widget_show (window);
2715                         }
2716                 }
2717         }
2718
2719         if (EV_IS_ANNOTATION_ATTACHMENT (annot)) {
2720                 EvAttachment *attachment = EV_ANNOTATION_ATTACHMENT (annot)->attachment;
2721
2722                 if (attachment) {
2723                         GError *error = NULL;
2724
2725                         ev_attachment_open (attachment,
2726                                             gtk_widget_get_screen (GTK_WIDGET (view)),
2727                                             timestamp,
2728                                             &error);
2729
2730                         if (error) {
2731                                 g_warning ("%s", error->message);
2732                                 g_error_free (error);
2733                         }
2734                 }
2735         }
2736 }
2737
2738 static gboolean
2739 ev_view_synctex_backward_search (EvView *view,
2740                                  gdouble x,
2741                                  gdouble y)
2742 {
2743         gint page = -1;
2744         gint x_new = 0, y_new = 0;
2745         EvSourceLink *link;
2746
2747         if (!ev_document_has_synctex (view->document))
2748                 return FALSE;
2749
2750         if (!get_doc_point_from_location (view, x, y, &page, &x_new, &y_new))
2751                 return FALSE;
2752
2753         link = ev_document_synctex_backward_search (view->document, page, x_new, y_new);
2754         if (link) {
2755                 g_signal_emit (view, signals[SIGNAL_SYNC_SOURCE], 0, link);
2756                 g_free (link);
2757
2758                 return TRUE;
2759         }
2760
2761         return FALSE;
2762 }
2763
2764 /*** GtkWidget implementation ***/
2765
2766 static void
2767 ev_view_size_request_continuous_dual_page (EvView         *view,
2768                                            GtkRequisition *requisition)
2769 {
2770         gint n_pages;
2771
2772         n_pages = ev_document_get_n_pages (view->document) + 1;
2773         get_page_y_offset (view, n_pages, &requisition->height);
2774
2775         switch (view->sizing_mode) {
2776                 case EV_SIZING_FIT_WIDTH:
2777                 case EV_SIZING_BEST_FIT:
2778                         requisition->width = 1;
2779
2780                         break;
2781                 case EV_SIZING_FREE: {
2782                         gint max_width;
2783                         GtkBorder border;
2784
2785                         ev_view_get_max_page_size (view, &max_width, NULL);
2786                         compute_border (view, max_width, max_width, &border);
2787                         requisition->width = (max_width + border.left + border.right) * 2 + (view->spacing * 3);
2788                 }
2789                         break;
2790                 default:
2791                         g_assert_not_reached ();
2792         }
2793 }
2794
2795 static void
2796 ev_view_size_request_continuous (EvView         *view,
2797                                  GtkRequisition *requisition)
2798 {
2799         gint n_pages;
2800
2801         n_pages = ev_document_get_n_pages (view->document);
2802         get_page_y_offset (view, n_pages, &requisition->height);
2803
2804         switch (view->sizing_mode) {
2805                 case EV_SIZING_FIT_WIDTH:
2806                 case EV_SIZING_BEST_FIT:
2807                         requisition->width = 1;
2808
2809                         break;
2810                 case EV_SIZING_FREE: {
2811                         gint max_width;
2812                         GtkBorder border;
2813
2814                         ev_view_get_max_page_size (view, &max_width, NULL);
2815                         compute_border (view, max_width, max_width, &border);
2816                         requisition->width = max_width + (view->spacing * 2) + border.left + border.right;
2817                 }
2818                         break;
2819                 default:
2820                         g_assert_not_reached ();
2821         }
2822 }
2823
2824 static void
2825 ev_view_size_request_dual_page (EvView         *view,
2826                                 GtkRequisition *requisition)
2827 {
2828         GtkBorder border;
2829         gint width, height;
2830
2831         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2832                 requisition->width = 1;
2833                 requisition->height = 1;
2834
2835                 return;
2836         }
2837
2838         /* Find the largest of the two. */
2839         ev_view_get_page_size (view,
2840                                view->current_page,
2841                                &width, &height);
2842         if (view->current_page + 1 < ev_document_get_n_pages (view->document)) {
2843                 gint width_2, height_2;
2844                 ev_view_get_page_size (view,
2845                                        view->current_page + 1,
2846                                        &width_2, &height_2);
2847                 if (width_2 > width) {
2848                         width = width_2;
2849                         height = height_2;
2850                 }
2851         }
2852         compute_border (view, width, height, &border);
2853
2854         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2855                 ((width + border.left + border.right) * 2) + (view->spacing * 3);
2856         requisition->height = (height + border.top + border.bottom) + (view->spacing * 2);
2857 }
2858
2859 static void
2860 ev_view_size_request_single_page (EvView         *view,
2861                                   GtkRequisition *requisition)
2862 {
2863         GtkBorder border;
2864         gint width, height;
2865
2866         if (view->sizing_mode == EV_SIZING_BEST_FIT) {
2867                 requisition->width = 1;
2868                 requisition->height = 1;
2869
2870                 return;
2871         }
2872
2873         ev_view_get_page_size (view, view->current_page, &width, &height);
2874         compute_border (view, width, height, &border);
2875
2876         requisition->width = view->sizing_mode == EV_SIZING_FIT_WIDTH ? 1 :
2877                 width + border.left + border.right + (2 * view->spacing);
2878         requisition->height = height + border.top + border.bottom + (2 * view->spacing);
2879 }
2880
2881 static void
2882 ev_view_size_request (GtkWidget      *widget,
2883                       GtkRequisition *requisition)
2884 {
2885         EvView *view = EV_VIEW (widget);
2886
2887         if (view->document == NULL) {
2888                 view->requisition.width = 1;
2889                 view->requisition.height = 1;
2890
2891                 *requisition = view->requisition;
2892
2893                 return;
2894         }
2895
2896         /* Get zoom for size here when not called from
2897          * ev_view_size_allocate()
2898          */
2899         if (!view->internal_size_request &&
2900             (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2901              view->sizing_mode == EV_SIZING_BEST_FIT)) {
2902                 GtkAllocation allocation;
2903
2904                 gtk_widget_get_allocation (widget, &allocation);
2905                 ev_view_zoom_for_size (view,
2906                                        allocation.width,
2907                                        allocation.height);
2908         }
2909
2910         if (view->continuous && view->dual_page)
2911                 ev_view_size_request_continuous_dual_page (view, &view->requisition);
2912         else if (view->continuous)
2913                 ev_view_size_request_continuous (view, &view->requisition);
2914         else if (view->dual_page)
2915                 ev_view_size_request_dual_page (view, &view->requisition);
2916         else
2917                 ev_view_size_request_single_page (view, &view->requisition);
2918
2919         *requisition = view->requisition;
2920 }
2921
2922 static void
2923 ev_view_size_allocate (GtkWidget      *widget,
2924                        GtkAllocation  *allocation)
2925 {
2926         EvView *view = EV_VIEW (widget);
2927         GList  *children, *l;
2928         gint    root_x, root_y;
2929
2930         GTK_WIDGET_CLASS (ev_view_parent_class)->size_allocate (widget, allocation);
2931
2932         if (!view->document)
2933                 return;
2934
2935         if (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
2936             view->sizing_mode == EV_SIZING_BEST_FIT) {
2937                 GtkRequisition req;
2938
2939                 ev_view_zoom_for_size (view,
2940                                        allocation->width,
2941                                        allocation->height);
2942                 view->internal_size_request = TRUE;
2943                 ev_view_size_request (widget, &req);
2944                 view->internal_size_request = FALSE;
2945         }
2946
2947         view_set_adjustment_values (view, GTK_ORIENTATION_HORIZONTAL);
2948         view_set_adjustment_values (view, GTK_ORIENTATION_VERTICAL);
2949
2950         if (view->document)
2951                 view_update_range_and_current_page (view);
2952
2953         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
2954         view->pending_resize = FALSE;
2955         view->pending_point.x = 0;
2956         view->pending_point.y = 0;
2957
2958         children = gtk_container_get_children (GTK_CONTAINER (widget));
2959         for (l = children; l && l->data; l = g_list_next (l)) {
2960                 EvFormField   *field;
2961                 GdkRectangle   view_area;
2962                 GList         *form_field_mapping;
2963                 GtkAllocation  child_allocation;
2964                 GtkRequisition child_requisition;
2965                 GtkWidget     *child = (GtkWidget *)l->data;
2966
2967                 field = g_object_get_data (G_OBJECT (child), "form-field");
2968                 if (!field)
2969                         continue;
2970
2971                 form_field_mapping = ev_page_cache_get_form_field_mapping (view->page_cache,
2972                                                                            field->page->index);
2973                 ev_view_get_area_from_mapping (view, field->page->index,
2974                                                form_field_mapping,
2975                                                field, &view_area);
2976
2977                 gtk_widget_size_request (child, &child_requisition);
2978                 if (child_requisition.width != view_area.width ||
2979                     child_requisition.height != view_area.height)
2980                         gtk_widget_set_size_request (child, view_area.width, view_area.height);
2981
2982                 gtk_container_child_get (GTK_CONTAINER (widget),
2983                                          child,
2984                                          "x", &child_allocation.x,
2985                                          "y", &child_allocation.y,
2986                                          NULL);
2987                 if (child_allocation.x != view_area.x ||
2988                     child_allocation.y != view_area.y) {
2989                         gtk_layout_move (GTK_LAYOUT (widget), child, view_area.x, view_area.y);
2990                 }
2991         }
2992         g_list_free (children);
2993
2994         if (view->window_children)
2995                 gdk_window_get_origin (gtk_widget_get_window (GTK_WIDGET (view)),
2996                                        &root_x, &root_y);
2997
2998         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
2999                 EvViewWindowChild *child;
3000                 EvRectangle        doc_rect;
3001                 GdkRectangle       view_rect;
3002
3003                 child = (EvViewWindowChild *)l->data;
3004
3005                 doc_rect = *ev_annotation_window_get_rectangle (EV_ANNOTATION_WINDOW (child->window));
3006                 if (child->moved) {
3007                         doc_rect.x1 = child->orig_x;
3008                         doc_rect.y1 = child->orig_y;
3009                 }
3010                 doc_rect_to_view_rect (view, child->page, &doc_rect, &view_rect);
3011                 view_rect.x -= view->scroll_x;
3012                 view_rect.y -= view->scroll_y;
3013
3014                 if (view_rect.x != child->orig_x || view_rect.y != child->orig_y) {
3015                         child->parent_x = root_x;
3016                         child->parent_y = root_y;
3017                         ev_view_window_child_move (view, child, view_rect.x + root_x, view_rect.y + root_y);
3018                 }
3019         }
3020 }
3021
3022 static void
3023 ev_view_realize (GtkWidget *widget)
3024 {
3025         EvView    *view = EV_VIEW (widget);
3026         GdkWindow *bin_window;
3027         GtkStyle  *style;
3028
3029         if (GTK_WIDGET_CLASS (ev_view_parent_class)->realize)
3030                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->realize) (widget);
3031
3032         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3033         gdk_window_set_events (bin_window,
3034                                (gdk_window_get_events (bin_window) |
3035                                 GDK_EXPOSURE_MASK |
3036                                 GDK_BUTTON_PRESS_MASK |
3037                                 GDK_BUTTON_RELEASE_MASK |
3038                                 GDK_SCROLL_MASK |
3039                                 GDK_KEY_PRESS_MASK |
3040                                 GDK_POINTER_MOTION_MASK |
3041                                 GDK_POINTER_MOTION_HINT_MASK |
3042                                 GDK_ENTER_NOTIFY_MASK |
3043                                 GDK_LEAVE_NOTIFY_MASK));
3044
3045         style = gtk_widget_get_style (widget);
3046         gdk_window_set_background (bin_window, &style->mid[GTK_STATE_NORMAL]);
3047
3048         on_adjustment_value_changed (NULL, view);
3049 }
3050
3051 static gboolean
3052 ev_view_scroll_event (GtkWidget *widget, GdkEventScroll *event)
3053 {
3054         EvView *view = EV_VIEW (widget);
3055         guint state;
3056
3057         state = event->state & gtk_accelerator_get_default_mod_mask ();
3058
3059         if (state == GDK_CONTROL_MASK) {
3060                 ev_document_model_set_sizing_mode (view->model, EV_SIZING_FREE);
3061                 if (event->direction == GDK_SCROLL_UP ||
3062                     event->direction == GDK_SCROLL_LEFT) {
3063                         if (ev_view_can_zoom_in (view)) {
3064                                 ev_view_zoom_in (view);
3065                         }
3066                 } else {
3067                         if (ev_view_can_zoom_out (view)) {
3068                                 ev_view_zoom_out (view);
3069                         }
3070                 }
3071
3072                 return TRUE;
3073         }
3074
3075         view->jump_to_find_result = FALSE;
3076
3077         /* Shift+Wheel scrolls the in the perpendicular direction */
3078         if (state & GDK_SHIFT_MASK) {
3079                 if (event->direction == GDK_SCROLL_UP)
3080                         event->direction = GDK_SCROLL_LEFT;
3081                 else if (event->direction == GDK_SCROLL_LEFT)
3082                         event->direction = GDK_SCROLL_UP;
3083                 else if (event->direction == GDK_SCROLL_DOWN)
3084                         event->direction = GDK_SCROLL_RIGHT;
3085                 else if (event->direction == GDK_SCROLL_RIGHT)
3086                         event->direction = GDK_SCROLL_DOWN;
3087
3088                 event->state &= ~GDK_SHIFT_MASK;
3089                 state &= ~GDK_SHIFT_MASK;
3090         }
3091
3092         if (state == 0 && view->sizing_mode == EV_SIZING_BEST_FIT && !view->continuous) {
3093                 switch (event->direction) {
3094                         case GDK_SCROLL_DOWN:
3095                         case GDK_SCROLL_RIGHT:
3096                                 ev_view_next_page (view);
3097                                 break;
3098                         case GDK_SCROLL_UP:
3099                         case GDK_SCROLL_LEFT:
3100                                 ev_view_previous_page (view);
3101                                 break;
3102                 }
3103
3104                 return TRUE;
3105         }
3106
3107         return FALSE;
3108 }
3109
3110 static EvViewSelection *
3111 find_selection_for_page (EvView *view,
3112                          gint    page)
3113 {
3114         GList *list;
3115
3116         for (list = view->selection_info.selections; list != NULL; list = list->next) {
3117                 EvViewSelection *selection;
3118
3119                 selection = (EvViewSelection *) list->data;
3120
3121                 if (selection->page == page)
3122                         return selection;
3123         }
3124
3125         return NULL;
3126 }
3127
3128 static gboolean
3129 ev_view_expose_event (GtkWidget      *widget,
3130                       GdkEventExpose *event)
3131 {
3132         EvView    *view = EV_VIEW (widget);
3133         GdkWindow *bin_window;
3134         cairo_t   *cr;
3135         gint       i;
3136
3137         if (view->loading) {
3138                 show_loading_window (view);
3139         } else if (view->loading_window &&
3140                    gtk_widget_get_visible (view->loading_window)) {
3141                 ev_view_loading_window_move (view);
3142         }
3143
3144         if (view->document == NULL)
3145                 return FALSE;
3146
3147         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3148         cr = gdk_cairo_create (bin_window);
3149
3150         for (i = view->start_page; i >= 0 && i <= view->end_page; i++) {
3151                 GdkRectangle page_area;
3152                 GtkBorder border;
3153                 gboolean page_ready = TRUE;
3154
3155                 if (!ev_view_get_page_extents (view, i, &page_area, &border))
3156                         continue;
3157
3158                 page_area.x -= view->scroll_x;
3159                 page_area.y -= view->scroll_y;
3160
3161                 draw_one_page (view, i, cr, &page_area, &border, &(event->area), &page_ready);
3162
3163                 if (page_ready && view->find_pages && view->highlight_find_results)
3164                         highlight_find_results (view, i);
3165                 if (page_ready && EV_IS_DOCUMENT_ANNOTATIONS (view->document))
3166                         show_annotation_windows (view, i);
3167                 if (page_ready && view->synctex_result)
3168                         highlight_forward_search_results (view, i);
3169         }
3170
3171         cairo_destroy (cr);
3172
3173         if (GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event)
3174                 (* GTK_WIDGET_CLASS (ev_view_parent_class)->expose_event) (widget, event);
3175
3176         return FALSE;
3177 }
3178
3179 static gboolean
3180 ev_view_do_popup_menu (EvView *view,
3181                        gdouble x,
3182                        gdouble y)
3183 {
3184         GList        *items = NULL;
3185         EvLink       *link;
3186         EvImage      *image;
3187         EvAnnotation *annot;
3188
3189         image = ev_view_get_image_at_location (view, x, y);
3190         if (image)
3191                 items = g_list_prepend (items, image);
3192
3193         link = ev_view_get_link_at_location (view, x, y);
3194         if (link)
3195                 items = g_list_prepend (items, link);
3196
3197         annot = ev_view_get_annotation_at_location (view, x, y);
3198         if (annot)
3199                 items = g_list_prepend (items, annot);
3200
3201         g_signal_emit (view, signals[SIGNAL_POPUP_MENU], 0, items);
3202
3203         g_list_free (items);
3204
3205         return TRUE;
3206 }
3207
3208 static gboolean
3209 ev_view_popup_menu (GtkWidget *widget)
3210 {
3211         gint x, y;
3212
3213         gtk_widget_get_pointer (widget, &x, &y);
3214         return ev_view_do_popup_menu (EV_VIEW (widget), x, y);
3215 }
3216
3217 static void
3218 get_link_area (EvView       *view,
3219                gint          x,
3220                gint          y,
3221                EvLink       *link,
3222                GdkRectangle *area)
3223 {
3224         GList *link_mapping;
3225         gint   page;
3226         gint   x_offset = 0, y_offset = 0;
3227
3228         x += view->scroll_x;
3229         y += view->scroll_y;
3230
3231         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3232
3233         link_mapping = ev_page_cache_get_link_mapping (view->page_cache, page);
3234         ev_view_get_area_from_mapping (view, page,
3235                                        link_mapping,
3236                                        link, area);
3237 }
3238
3239 static void
3240 get_annot_area (EvView       *view,
3241                gint          x,
3242                gint          y,
3243                EvAnnotation *annot,
3244                GdkRectangle *area)
3245 {
3246         GList *annot_mapping;
3247         gint   page;
3248         gint   x_offset = 0, y_offset = 0;
3249
3250         x += view->scroll_x;
3251         y += view->scroll_y;
3252
3253         find_page_at_location (view, x, y, &page, &x_offset, &y_offset);
3254
3255         annot_mapping = ev_page_cache_get_annot_mapping (view->page_cache, page);
3256         ev_view_get_area_from_mapping (view, page,
3257                                        annot_mapping,
3258                                        annot, area);
3259 }
3260
3261 static gboolean
3262 ev_view_query_tooltip (GtkWidget  *widget,
3263                        gint        x,
3264                        gint        y,
3265                        gboolean    keyboard_tip,
3266                        GtkTooltip *tooltip)
3267 {
3268         EvView       *view = EV_VIEW (widget);
3269         EvLink       *link;
3270         EvAnnotation *annot;
3271         gchar        *text;
3272
3273         annot = ev_view_get_annotation_at_location (view, x, y);
3274         if (annot && annot->contents) {
3275                 GdkRectangle annot_area;
3276
3277                 get_annot_area (view, x, y, annot, &annot_area);
3278                 gtk_tooltip_set_text (tooltip, annot->contents);
3279                 gtk_tooltip_set_tip_area (tooltip, &annot_area);
3280
3281                 return TRUE;
3282         }
3283
3284         link = ev_view_get_link_at_location (view, x, y);
3285         if (!link)
3286                 return FALSE;
3287
3288         text = tip_from_link (view, link);
3289         if (text && g_utf8_validate (text, -1, NULL)) {
3290                 GdkRectangle link_area;
3291
3292                 get_link_area (view, x, y, link, &link_area);
3293                 gtk_tooltip_set_text (tooltip, text);
3294                 gtk_tooltip_set_tip_area (tooltip, &link_area);
3295         }
3296         g_free (text);
3297
3298         return TRUE;
3299 }
3300
3301 static void
3302 start_selection_for_event (EvView         *view,
3303                            GdkEventButton *event)
3304 {
3305         clear_selection (view);
3306
3307         view->selection_info.start.x = event->x + view->scroll_x;
3308         view->selection_info.start.y = event->y + view->scroll_y;
3309
3310         switch (event->type) {
3311                 case GDK_2BUTTON_PRESS:
3312                         view->selection_info.style = EV_SELECTION_STYLE_WORD;
3313                         break;
3314                 case GDK_3BUTTON_PRESS:
3315                         view->selection_info.style = EV_SELECTION_STYLE_LINE;
3316                         break;
3317                 default:
3318                         view->selection_info.style = EV_SELECTION_STYLE_GLYPH;
3319                         return;
3320         }
3321
3322         /* In case of WORD or LINE, compute selections now */
3323         compute_selections (view,
3324                             view->selection_info.style,
3325                             &(view->selection_info.start),
3326                             &(view->selection_info.start));
3327 }
3328
3329 static gboolean
3330 ev_view_button_press_event (GtkWidget      *widget,
3331                             GdkEventButton *event)
3332 {
3333         EvView *view = EV_VIEW (widget);
3334
3335         if (!view->document)
3336                 return FALSE;
3337
3338         if (!gtk_widget_has_focus (widget)) {
3339                 gtk_widget_grab_focus (widget);
3340         }
3341
3342         if (view->window_child_focus) {
3343                 EvAnnotationWindow *window;
3344                 EvAnnotation       *annot;
3345
3346                 window = EV_ANNOTATION_WINDOW (view->window_child_focus->window);
3347                 annot = ev_annotation_window_get_annotation (window);
3348                 ev_annotation_window_ungrab_focus (window);
3349                 ev_view_annotation_save (view, annot);
3350                 view->window_child_focus = NULL;
3351         }
3352
3353         view->pressed_button = event->button;
3354         view->selection_info.in_drag = FALSE;
3355
3356         if (view->scroll_info.autoscrolling)
3357                 return TRUE;
3358
3359         switch (event->button) {
3360                 case 1: {
3361                         EvImage *image;
3362                         EvAnnotation *annot;
3363                         EvFormField *field;
3364
3365                         if (event->state & GDK_CONTROL_MASK)
3366                                 return ev_view_synctex_backward_search (view, event->x , event->y);
3367
3368                         if (EV_IS_SELECTION (view->document) && view->selection_info.selections) {
3369                                 if (event->type == GDK_3BUTTON_PRESS) {
3370                                         start_selection_for_event (view, event);
3371                                 } else if (location_in_selected_text (view,
3372                                                                event->x + view->scroll_x,
3373                                                                event->y + view->scroll_y)) {
3374                                         view->selection_info.in_drag = TRUE;
3375                                 } else {
3376                                         start_selection_for_event (view, event);
3377                                 }
3378
3379                                 gtk_widget_queue_draw (widget);
3380                         } else if ((annot = ev_view_get_annotation_at_location (view, event->x, event->y))) {
3381                                 ev_view_handle_annotation (view, annot, event->x, event->y, event->time);
3382                         } else if ((field = ev_view_get_form_field_at_location (view, event->x, event->y))) {
3383                                 ev_view_remove_all (view);
3384                                 ev_view_handle_form_field (view, field, event->x, event->y);
3385                         } else if (!location_in_text (view, event->x + view->scroll_x, event->y + view->scroll_y) &&
3386                                    (image = ev_view_get_image_at_location (view, event->x, event->y))) {
3387                                 if (view->image_dnd_info.image)
3388                                         g_object_unref (view->image_dnd_info.image);
3389                                 view->image_dnd_info.image = g_object_ref (image);
3390                                 view->image_dnd_info.in_drag = TRUE;
3391
3392                                 view->image_dnd_info.start.x = event->x + view->scroll_x;
3393                                 view->image_dnd_info.start.y = event->y + view->scroll_y;
3394                         } else {
3395                                 ev_view_remove_all (view);
3396
3397                                 if (view->synctex_result) {
3398                                         g_free (view->synctex_result);
3399                                         view->synctex_result = NULL;
3400                                         gtk_widget_queue_draw (widget);
3401                                 }
3402
3403                                 if (EV_IS_SELECTION (view->document))
3404                                         start_selection_for_event (view, event);
3405                         }
3406                 }
3407                         return TRUE;
3408                 case 2:
3409                         /* use root coordinates as reference point because
3410                          * scrolling changes window relative coordinates */
3411                         view->drag_info.start.x = event->x_root;
3412                         view->drag_info.start.y = event->y_root;
3413                         view->drag_info.hadj = gtk_adjustment_get_value (view->hadjustment);
3414                         view->drag_info.vadj = gtk_adjustment_get_value (view->vadjustment);
3415
3416                         ev_view_set_cursor (view, EV_VIEW_CURSOR_DRAG);
3417
3418                         return TRUE;
3419                 case 3:
3420                         view->scroll_info.start_y = event->y;
3421                         return ev_view_do_popup_menu (view, event->x, event->y);
3422         }
3423
3424         return FALSE;
3425 }
3426
3427 static void
3428 ev_view_remove_all (EvView *view)
3429 {
3430         GList *children, *child;
3431
3432         children = gtk_container_get_children (GTK_CONTAINER (view));
3433         for (child = children; child && child->data; child = g_list_next (child)) {
3434                 gtk_container_remove (GTK_CONTAINER (view),
3435                                       GTK_WIDGET (child->data));
3436         }
3437         g_list_free (children);
3438 }
3439
3440 /*** Drag and Drop ***/
3441 static void
3442 ev_view_drag_data_get (GtkWidget        *widget,
3443                        GdkDragContext   *context,
3444                        GtkSelectionData *selection_data,
3445                        guint             info,
3446                        guint             time)
3447 {
3448         EvView *view = EV_VIEW (widget);
3449
3450         switch (info) {
3451                 case TARGET_DND_TEXT:
3452                         if (EV_IS_SELECTION (view->document) &&
3453                             view->selection_info.selections) {
3454                                 gchar *text;
3455
3456                                 text = get_selected_text (view);
3457                                 gtk_selection_data_set_text (selection_data,
3458                                                              text,
3459                                                              strlen (text));
3460                                 g_free (text);
3461                         }
3462                         break;
3463                 case TARGET_DND_IMAGE:
3464                         if (view->image_dnd_info.image) {
3465                                 GdkPixbuf *pixbuf;
3466
3467                                 ev_document_doc_mutex_lock ();
3468                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3469                                                                        view->image_dnd_info.image);
3470                                 ev_document_doc_mutex_unlock ();
3471
3472                                 gtk_selection_data_set_pixbuf (selection_data, pixbuf);
3473                                 g_object_unref (pixbuf);
3474                         }
3475                         break;
3476                 case TARGET_DND_URI:
3477                         if (view->image_dnd_info.image) {
3478                                 GdkPixbuf   *pixbuf;
3479                                 const gchar *tmp_uri;
3480                                 gchar       *uris[2];
3481
3482                                 ev_document_doc_mutex_lock ();
3483                                 pixbuf = ev_document_images_get_image (EV_DOCUMENT_IMAGES (view->document),
3484                                                                        view->image_dnd_info.image);
3485                                 ev_document_doc_mutex_unlock ();
3486
3487                                 tmp_uri = ev_image_save_tmp (view->image_dnd_info.image, pixbuf);
3488                                 g_object_unref (pixbuf);
3489
3490                                 uris[0] = (gchar *)tmp_uri;
3491                                 uris[1] = NULL;
3492                                 gtk_selection_data_set_uris (selection_data, uris);
3493                         }
3494         }
3495 }
3496
3497 static gboolean
3498 ev_view_drag_motion (GtkWidget      *widget,
3499                      GdkDragContext *context,
3500                      gint            x,
3501                      gint            y,
3502                      guint           time)
3503 {
3504         if (gtk_drag_get_source_widget (context) == widget)
3505                 gdk_drag_status (context, 0, time);
3506         else
3507                 gdk_drag_status (context, gdk_drag_context_get_suggested_action (context), time);
3508
3509         return TRUE;
3510 }
3511
3512 static gboolean
3513 selection_update_idle_cb (EvView *view)
3514 {
3515         compute_selections (view,
3516                             view->selection_info.style,
3517                             &view->selection_info.start,
3518                             &view->motion);
3519         view->selection_update_id = 0;
3520         return FALSE;
3521 }
3522
3523 static gboolean
3524 selection_scroll_timeout_cb (EvView *view)
3525 {
3526         gint x, y, shift = 0;
3527         GtkWidget *widget = GTK_WIDGET (view);
3528         GtkAllocation allocation;
3529
3530         gtk_widget_get_allocation (widget, &allocation);
3531         gtk_widget_get_pointer (widget, &x, &y);
3532
3533         if (y > allocation.height) {
3534                 shift = (y - allocation.height) / 2;
3535         } else if (y < 0) {
3536                 shift = y / 2;
3537         }
3538
3539         if (shift)
3540                 gtk_adjustment_set_value (view->vadjustment,
3541                                           CLAMP (gtk_adjustment_get_value (view->vadjustment) + shift,
3542                                                  gtk_adjustment_get_lower (view->vadjustment),
3543                                                  gtk_adjustment_get_upper (view->vadjustment) -
3544                                                  gtk_adjustment_get_page_size (view->vadjustment)));
3545
3546         if (x > allocation.width) {
3547                 shift = (x - allocation.width) / 2;
3548         } else if (x < 0) {
3549                 shift = x / 2;
3550         }
3551
3552         if (shift)
3553                 gtk_adjustment_set_value (view->hadjustment,
3554                                           CLAMP (gtk_adjustment_get_value (view->hadjustment) + shift,
3555                                                  gtk_adjustment_get_lower (view->hadjustment),
3556                                                  gtk_adjustment_get_upper (view->hadjustment) -
3557                                                  gtk_adjustment_get_page_size (view->hadjustment)));
3558
3559         return TRUE;
3560 }
3561
3562 static gboolean
3563 ev_view_drag_update_momentum (EvView *view)
3564 {
3565         int i;
3566         if (!view->drag_info.in_drag)
3567                 return FALSE;
3568
3569         for (i = DRAG_HISTORY - 1; i > 0; i--) {
3570                 view->drag_info.buffer[i].x = view->drag_info.buffer[i-1].x;
3571                 view->drag_info.buffer[i].y = view->drag_info.buffer[i-1].y;
3572         }
3573
3574         /* Momentum is a moving average of 10ms granularity over
3575          * the last 100ms with each 10ms stored in buffer.
3576          */
3577
3578         view->drag_info.momentum.x = (view->drag_info.buffer[DRAG_HISTORY - 1].x - view->drag_info.buffer[0].x);
3579         view->drag_info.momentum.y = (view->drag_info.buffer[DRAG_HISTORY - 1].y - view->drag_info.buffer[0].y);
3580
3581         return TRUE;
3582 }
3583
3584 static gboolean
3585 ev_view_scroll_drag_release (EvView *view)
3586 {
3587         gdouble dhadj_value, dvadj_value;
3588         gdouble oldhadjustment, oldvadjustment;
3589         gdouble h_page_size, v_page_size;
3590         gdouble h_upper, v_upper;
3591         GtkAllocation allocation;
3592
3593         view->drag_info.momentum.x /= 1.2;
3594         view->drag_info.momentum.y /= 1.2; /* Alter these constants to change "friction" */
3595
3596         gtk_widget_get_allocation (GTK_WIDGET (view), &allocation);
3597
3598         h_page_size = gtk_adjustment_get_page_size (view->hadjustment);
3599         v_page_size = gtk_adjustment_get_page_size (view->vadjustment);
3600
3601         dhadj_value = h_page_size *
3602                       (gdouble)view->drag_info.momentum.x / allocation.width;
3603         dvadj_value = v_page_size *
3604                       (gdouble)view->drag_info.momentum.y / allocation.height;
3605
3606         oldhadjustment = gtk_adjustment_get_value (view->hadjustment);
3607         oldvadjustment = gtk_adjustment_get_value (view->vadjustment);
3608
3609         h_upper = gtk_adjustment_get_upper (view->hadjustment);
3610         v_upper = gtk_adjustment_get_upper (view->vadjustment);
3611
3612         /* When we reach the edges, we need either to absorb some momentum and bounce by
3613          * multiplying it on -0.5 or stop scrolling by setting momentum to 0. */
3614         if (((oldhadjustment + dhadj_value) > (h_upper - h_page_size)) ||
3615             ((oldhadjustment + dhadj_value) < 0))
3616                 view->drag_info.momentum.x = 0;
3617         if (((oldvadjustment + dvadj_value) > (v_upper - v_page_size)) ||
3618             ((oldvadjustment + dvadj_value) < 0))
3619                 view->drag_info.momentum.y = 0;
3620
3621         gtk_adjustment_set_value (view->hadjustment,
3622                                   MIN (oldhadjustment + dhadj_value,
3623                                        h_upper - h_page_size));
3624         gtk_adjustment_set_value (view->vadjustment,
3625                                   MIN (oldvadjustment + dvadj_value,
3626                                        v_upper - v_page_size));
3627
3628         if (((view->drag_info.momentum.x < 1) && (view->drag_info.momentum.x > -1)) &&
3629             ((view->drag_info.momentum.y < 1) && (view->drag_info.momentum.y > -1)))
3630                 return FALSE;
3631         else
3632                 return TRUE;
3633 }
3634
3635 static gboolean
3636 ev_view_motion_notify_event (GtkWidget      *widget,
3637                              GdkEventMotion *event)
3638 {
3639         EvView    *view = EV_VIEW (widget);
3640         GdkWindow *bin_window;
3641         gint       x, y;
3642
3643         if (!view->document)
3644                 return FALSE;
3645
3646         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
3647
3648         if (event->is_hint || event->window != bin_window) {
3649             gtk_widget_get_pointer (widget, &x, &y);
3650         } else {
3651             x = event->x;
3652             y = event->y;
3653         }
3654
3655         if (view->scroll_info.autoscrolling) {
3656                 view->scroll_info.last_y = y;
3657                 return TRUE;
3658         }
3659
3660         if (view->selection_info.in_drag) {
3661                 if (gtk_drag_check_threshold (widget,
3662                                               view->selection_info.start.x,
3663                                               view->selection_info.start.y,
3664                                               x, y)) {
3665                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3666
3667                         gtk_target_list_add_text_targets (target_list, TARGET_DND_TEXT);
3668
3669                         gtk_drag_begin (widget, target_list,
3670                                         GDK_ACTION_COPY,
3671                                         1, (GdkEvent *)event);
3672
3673                         view->selection_info.in_drag = FALSE;
3674
3675                         gtk_target_list_unref (target_list);
3676
3677                         return TRUE;
3678                 }
3679         } else if (view->image_dnd_info.in_drag) {
3680                 if (gtk_drag_check_threshold (widget,
3681                                               view->selection_info.start.x,
3682                                               view->selection_info.start.y,
3683                                               x, y)) {
3684                         GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
3685
3686                         gtk_target_list_add_uri_targets (target_list, TARGET_DND_URI);
3687                         gtk_target_list_add_image_targets (target_list, TARGET_DND_IMAGE, TRUE);
3688
3689                         gtk_drag_begin (widget, target_list,
3690                                         GDK_ACTION_COPY,
3691                                         1, (GdkEvent *)event);
3692
3693                         view->image_dnd_info.in_drag = FALSE;
3694
3695                         gtk_target_list_unref (target_list);
3696
3697                         return TRUE;
3698                 }
3699         }
3700
3701         switch (view->pressed_button) {
3702         case 1:
3703                 /* For the Evince 0.4.x release, we limit selection to un-rotated
3704                  * documents only.
3705                  */
3706                 if (view->rotation != 0)
3707                         return FALSE;
3708
3709                 /* Schedule timeout to scroll during selection and additionally
3710                  * scroll once to allow arbitrary speed. */
3711                 if (!view->selection_scroll_id)
3712                     view->selection_scroll_id = g_timeout_add (SCROLL_TIME,
3713                                                                (GSourceFunc)selection_scroll_timeout_cb,
3714                                                                view);
3715                 else
3716                     selection_scroll_timeout_cb (view);
3717
3718                 view->selection_info.in_selection = TRUE;
3719                 view->motion.x = x + view->scroll_x;
3720                 view->motion.y = y + view->scroll_y;
3721
3722                 /* Queue an idle to handle the motion.  We do this because
3723                  * handling any selection events in the motion could be slower
3724                  * than new motion events reach us.  We always put it in the
3725                  * idle to make sure we catch up and don't visibly lag the
3726                  * mouse. */
3727                 if (!view->selection_update_id)
3728                         view->selection_update_id = g_idle_add ((GSourceFunc)selection_update_idle_cb, view);
3729
3730                 return TRUE;
3731         case 2:
3732                 if (!view->drag_info.in_drag) {
3733                         gboolean start;
3734                         int i;
3735
3736                         start = gtk_drag_check_threshold (widget,
3737                                                           view->drag_info.start.x,
3738                                                           view->drag_info.start.y,
3739                                                           event->x_root,
3740                                                           event->y_root);
3741                         view->drag_info.in_drag = start;
3742                         view->drag_info.drag_timeout_id = g_timeout_add (10,
3743                                 (GSourceFunc)ev_view_drag_update_momentum, view);
3744                         /* Set 100 to choose how long it takes to build up momentum */
3745                         /* Clear out previous momentum info: */
3746                         for (i = 0; i < DRAG_HISTORY; i++) {
3747                                 view->drag_info.buffer[i].x = event->x;
3748                                 view->drag_info.buffer[i].y = event->y;
3749                         }
3750                         view->drag_info.momentum.x = 0;
3751                         view->drag_info.momentum.y = 0;
3752                 }
3753
3754                 if (view->drag_info.in_drag) {
3755                         int dx, dy;
3756                         gdouble dhadj_value, dvadj_value;
3757                         GtkAllocation allocation;
3758
3759                         view->drag_info.buffer[0].x = event->x;
3760                         view->drag_info.buffer[0].y = event->y;
3761
3762                         dx = event->x_root - view->drag_info.start.x;
3763                         dy = event->y_root - view->drag_info.start.y;
3764
3765                         gtk_widget_get_allocation (widget, &allocation);
3766
3767                         dhadj_value = gtk_adjustment_get_page_size (view->hadjustment) *
3768                                       (gdouble)dx / allocation.width;
3769                         dvadj_value = gtk_adjustment_get_page_size (view->vadjustment) *
3770                                       (gdouble)dy / allocation.height;
3771
3772                         /* clamp scrolling to visible area */
3773                         gtk_adjustment_set_value (view->hadjustment,
3774                                                   MIN (view->drag_info.hadj - dhadj_value,
3775                                                        gtk_adjustment_get_upper (view->hadjustment) -
3776                                                        gtk_adjustment_get_page_size (view->hadjustment)));
3777                         gtk_adjustment_set_value (view->vadjustment,
3778                                                   MIN (view->drag_info.vadj - dvadj_value,
3779                                                        gtk_adjustment_get_upper (view->vadjustment) -
3780                                                        gtk_adjustment_get_page_size (view->vadjustment)));
3781
3782                         return TRUE;
3783                 }
3784
3785                 break;
3786         default:
3787                 ev_view_handle_cursor_over_xy (view, x, y);
3788         }
3789
3790         return FALSE;
3791 }
3792
3793 static gboolean
3794 ev_view_button_release_event (GtkWidget      *widget,
3795                               GdkEventButton *event)
3796 {
3797         EvView *view = EV_VIEW (widget);
3798         EvLink *link = NULL;
3799
3800         view->image_dnd_info.in_drag = FALSE;
3801
3802         if (view->scroll_info.autoscrolling) {
3803                 ev_view_autoscroll_stop (view);
3804                 view->pressed_button = -1;
3805
3806                 return TRUE;
3807         }
3808
3809         if (view->drag_info.in_drag) {
3810                 view->drag_info.release_timeout_id =
3811                         g_timeout_add (20,
3812                                        (GSourceFunc)ev_view_scroll_drag_release, view);
3813         }
3814
3815         if (view->document && !view->drag_info.in_drag && view->pressed_button != 3) {
3816                 link = ev_view_get_link_at_location (view, event->x, event->y);
3817         }
3818
3819         view->drag_info.in_drag = FALSE;
3820
3821         if (view->pressed_button == 2) {
3822                 ev_view_handle_cursor_over_xy (view, event->x, event->y);
3823         }
3824
3825         view->pressed_button = -1;
3826
3827         if (view->selection_scroll_id) {
3828             g_source_remove (view->selection_scroll_id);
3829             view->selection_scroll_id = 0;
3830         }
3831         if (view->selection_update_id) {
3832             g_source_remove (view->selection_update_id);
3833             view->selection_update_id = 0;
3834         }
3835
3836         if (view->selection_info.selections) {
3837                 clear_link_selected (view);
3838                 ev_view_update_primary_selection (view);
3839
3840                 if (view->selection_info.in_drag) {
3841                         clear_selection (view);
3842                         gtk_widget_queue_draw (widget);
3843                 }
3844
3845                 view->selection_info.in_drag = FALSE;
3846         } else if (link) {
3847                 if (event->button == 2) {
3848                         EvLinkAction    *action;
3849                         EvLinkActionType type;
3850
3851                         action = ev_link_get_action (link);
3852                         if (!action)
3853                                 return FALSE;
3854
3855                         type = ev_link_action_get_action_type (action);
3856                         if (type == EV_LINK_ACTION_TYPE_GOTO_DEST) {
3857                                 g_signal_emit (view,
3858                                                signals[SIGNAL_EXTERNAL_LINK],
3859                                                0, action);
3860                         }
3861                 } else {
3862                         ev_view_handle_link (view, link);
3863                 }
3864         }
3865
3866         return FALSE;
3867 }
3868
3869 static gboolean
3870 ev_view_key_press_event (GtkWidget   *widget,
3871                          GdkEventKey *event)
3872 {
3873         EvView *view = EV_VIEW (widget);
3874
3875         if (!view->document)
3876                 return FALSE;
3877
3878         if (!gtk_widget_has_focus (widget)) {
3879                 /* Forward key events to current focused window child */
3880                 if (view->window_child_focus) {
3881                         GdkEventKey *new_event;
3882                         gboolean     handled;
3883
3884                         new_event = (GdkEventKey *) gdk_event_copy ((GdkEvent *)event);
3885                         g_object_unref (new_event->window);
3886                         new_event->window = gtk_widget_get_window (view->window_child_focus->window);
3887                         if (new_event->window)
3888                                 g_object_ref (new_event->window);
3889                         gtk_widget_realize (view->window_child_focus->window);
3890                         handled = gtk_widget_event (view->window_child_focus->window, (GdkEvent *)new_event);
3891                         gdk_event_free ((GdkEvent *)new_event);
3892
3893                         return handled;
3894                 }
3895
3896                 return FALSE;
3897         }
3898
3899         return gtk_bindings_activate_event (GTK_OBJECT (widget), event);
3900 }
3901
3902 static gint
3903 ev_view_focus_in (GtkWidget     *widget,
3904                   GdkEventFocus *event)
3905 {
3906         if (EV_VIEW (widget)->pixbuf_cache)
3907                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3908         gtk_widget_queue_draw (widget);
3909
3910         return FALSE;
3911 }
3912
3913 static gint
3914 ev_view_focus_out (GtkWidget     *widget,
3915                    GdkEventFocus *event)
3916 {
3917         if (EV_VIEW (widget)->pixbuf_cache)
3918                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3919         gtk_widget_queue_draw (widget);
3920
3921         return FALSE;
3922 }
3923
3924 static gboolean
3925 ev_view_leave_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3926 {
3927         EvView *view = EV_VIEW (widget);
3928
3929         if (view->cursor != EV_VIEW_CURSOR_NORMAL)
3930                 ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
3931
3932         return FALSE;
3933 }
3934
3935 static gboolean
3936 ev_view_enter_notify_event (GtkWidget *widget, GdkEventCrossing   *event)
3937 {
3938         EvView *view = EV_VIEW (widget);
3939
3940         ev_view_handle_cursor_over_xy (view, event->x, event->y);
3941
3942         return FALSE;
3943 }
3944
3945 static void
3946 ev_view_style_set (GtkWidget *widget,
3947                    GtkStyle  *old_style)
3948 {
3949         if (EV_VIEW (widget)->pixbuf_cache)
3950                 ev_pixbuf_cache_style_changed (EV_VIEW (widget)->pixbuf_cache);
3951
3952         GTK_WIDGET_CLASS (ev_view_parent_class)->style_set (widget, old_style);
3953 }
3954
3955 /*** Drawing ***/
3956
3957 static void
3958 draw_rubberband (EvView             *view,
3959                  GdkWindow          *window,
3960                  const GdkRectangle *rect,
3961                  gdouble             alpha)
3962 {
3963         GtkStyle *style;
3964         GdkColor *fill_color_gdk;
3965         gdouble   r, g, b;
3966         cairo_t  *cr;
3967
3968         style = gtk_widget_get_style (GTK_WIDGET (view));
3969         fill_color_gdk = gdk_color_copy (&style->base[GTK_STATE_SELECTED]);
3970         r = fill_color_gdk->red / 65535.;
3971         g = fill_color_gdk->green / 65535.;
3972         b = fill_color_gdk->blue / 65535.;
3973
3974         cr = gdk_cairo_create (window);
3975
3976         cairo_set_source_rgba (cr, r, g, b, alpha);
3977         cairo_rectangle (cr,
3978                          rect->x - view->scroll_x,
3979                          rect->y - view->scroll_y,
3980                          rect->width, rect->height);
3981         cairo_fill_preserve (cr);
3982
3983         cairo_set_line_width (cr, 0.5);
3984         cairo_set_source_rgb (cr, r, g, b);
3985         cairo_stroke (cr);
3986
3987         cairo_destroy (cr);
3988
3989         gdk_color_free (fill_color_gdk);
3990 }
3991
3992
3993 static void
3994 highlight_find_results (EvView *view, int page)
3995 {
3996         gint       i, n_results = 0;
3997         GdkWindow *bin_window;
3998
3999         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4000
4001         n_results = ev_view_find_get_n_results (view, page);
4002
4003         for (i = 0; i < n_results; i++) {
4004                 EvRectangle *rectangle;
4005                 GdkRectangle view_rectangle;
4006                 gdouble      alpha;
4007
4008                 if (i == view->find_result && page == view->current_page) {
4009                         alpha = 0.6;
4010                 } else {
4011                         alpha = 0.3;
4012                 }
4013
4014                 rectangle = ev_view_find_get_result (view, page, i);
4015                 doc_rect_to_view_rect (view, page, rectangle, &view_rectangle);
4016                 draw_rubberband (view, bin_window, &view_rectangle, alpha);
4017         }
4018 }
4019
4020 static void
4021 highlight_forward_search_results (EvView *view, int page)
4022 {
4023         GdkWindow   *bin_window;
4024         GdkRectangle rect;
4025         cairo_t     *cr;
4026         EvMapping   *mapping = view->synctex_result;
4027
4028         if (GPOINTER_TO_INT (mapping->data) != page)
4029                 return;
4030
4031         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4032         doc_rect_to_view_rect (view, page, &mapping->area, &rect);
4033
4034         cr = gdk_cairo_create (bin_window);
4035         cairo_set_source_rgb (cr, 1., 0., 0.);
4036         cairo_rectangle (cr,
4037                          rect.x - view->scroll_x,
4038                          rect.y - view->scroll_y,
4039                          rect.width, rect.height);
4040         cairo_stroke (cr);
4041         cairo_destroy (cr);
4042 }
4043
4044 static void
4045 ev_view_loading_window_move (EvView *view)
4046 {
4047         GtkWidget       *widget = GTK_WIDGET (view);
4048         EvLoadingWindow *window = EV_LOADING_WINDOW (view->loading_window);
4049         gint             root_x, root_y;
4050         gint             window_width;
4051         GtkAllocation    allocation;
4052
4053         gtk_widget_get_allocation (widget, &allocation);
4054         gdk_window_get_origin (gtk_widget_get_window (widget), &root_x, &root_y);
4055         ev_loading_window_get_size (window, &window_width, NULL);
4056
4057         root_x += allocation.width - window_width - 10;
4058         root_y += 10;
4059
4060         ev_loading_window_move (window, root_x, root_y);
4061 }
4062
4063 static gboolean
4064 show_loading_window_cb (EvView *view)
4065 {
4066         if (!view->loading_window) {
4067                 GtkWindow *parent;
4068                 GdkScreen *screen;
4069
4070                 parent = GTK_WINDOW (gtk_widget_get_toplevel (GTK_WIDGET (view)));
4071                 view->loading_window = ev_loading_window_new (parent);
4072
4073                 /* Show the window off screen to get a valid size asap */
4074                 screen = gtk_widget_get_screen (GTK_WIDGET (view));
4075                 gtk_window_move (GTK_WINDOW (view->loading_window),
4076                                  gdk_screen_get_width (screen) + 1,
4077                                  gdk_screen_get_height (screen) + 1);
4078                 gtk_widget_show (view->loading_window);
4079         }
4080
4081         ev_view_loading_window_move (view);
4082
4083         gtk_widget_show (view->loading_window);
4084
4085         view->loading_timeout = 0;
4086
4087         return FALSE;
4088 }
4089
4090 static void
4091 show_loading_window (EvView *view)
4092 {
4093         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4094                 ev_view_loading_window_move (view);
4095                 return;
4096         }
4097
4098         if (!view->loading_timeout) {
4099                 view->loading_timeout =
4100                         g_timeout_add_full (G_PRIORITY_LOW,
4101                                             0.5, (GSourceFunc)show_loading_window_cb,
4102                                             view, NULL);
4103         }
4104 }
4105
4106 static void
4107 hide_loading_window (EvView *view)
4108 {
4109         if (view->loading_timeout) {
4110                 g_source_remove (view->loading_timeout);
4111                 view->loading_timeout = 0;
4112         }
4113
4114         if (view->loading_window && gtk_widget_get_visible (view->loading_window)) {
4115                 gtk_widget_hide (view->loading_window);
4116         }
4117 }
4118
4119 static void
4120 draw_one_page (EvView       *view,
4121                gint          page,
4122                cairo_t      *cr,
4123                GdkRectangle *page_area,
4124                GtkBorder    *border,
4125                GdkRectangle *expose_area,
4126                gboolean     *page_ready)
4127 {
4128         GdkWindow   *bin_window;
4129         GdkRectangle overlap;
4130         GdkRectangle real_page_area;
4131         gint         current_page;
4132         gboolean     inverted_colors;
4133
4134         g_assert (view->document);
4135
4136         if (! gdk_rectangle_intersect (page_area, expose_area, &overlap))
4137                 return;
4138
4139         /* Render the document itself */
4140         real_page_area = *page_area;
4141
4142         real_page_area.x += border->left;
4143         real_page_area.y += border->top;
4144         real_page_area.width -= (border->left + border->right);
4145         real_page_area.height -= (border->top + border->bottom);
4146         *page_ready = TRUE;
4147
4148         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4149         current_page = ev_document_model_get_page (view->model);
4150         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4151         ev_document_misc_paint_one_page (bin_window,
4152                                          GTK_WIDGET (view),
4153                                          page_area, border,
4154                                          page == current_page,
4155                                          inverted_colors);
4156
4157         if (gdk_rectangle_intersect (&real_page_area, expose_area, &overlap)) {
4158                 gint             width, height;
4159                 gint             page_width, page_height;
4160                 cairo_surface_t *page_surface = NULL;
4161                 gint             selection_width, selection_height;
4162                 cairo_surface_t *selection_surface = NULL;
4163
4164                 page_surface = ev_pixbuf_cache_get_surface (view->pixbuf_cache, page);
4165
4166                 if (!page_surface) {
4167                         if (page == current_page)
4168                                 show_loading_window (view);
4169
4170                         *page_ready = FALSE;
4171
4172                         return;
4173                 }
4174
4175                 if (page == current_page)
4176                         hide_loading_window (view);
4177
4178                 ev_view_get_page_size (view, page, &width, &height);
4179
4180                 page_width = cairo_image_surface_get_width (page_surface);
4181                 page_height = cairo_image_surface_get_height (page_surface);
4182
4183                 cairo_save (cr);
4184                 cairo_translate (cr, overlap.x, overlap.y);
4185
4186                 if (width != page_width || height != page_height) {
4187                         cairo_pattern_set_filter (cairo_get_source (cr),
4188                                                   CAIRO_FILTER_FAST);
4189                         cairo_scale (cr,
4190                                      (gdouble)width / page_width,
4191                                      (gdouble)height / page_height);
4192                 }
4193
4194                 cairo_surface_set_device_offset (page_surface,
4195                                                  overlap.x - real_page_area.x,
4196                                                  overlap.y - real_page_area.y);
4197                 cairo_set_source_surface (cr, page_surface, 0, 0);
4198                 cairo_paint (cr);
4199                 cairo_restore (cr);
4200
4201                 /* Get the selection pixbuf iff we have something to draw */
4202                 if (find_selection_for_page (view, page) &&
4203                     view->selection_mode == EV_VIEW_SELECTION_TEXT) {
4204                         selection_surface =
4205                                 ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
4206                                                                        page,
4207                                                                        view->scale,
4208                                                                        NULL);
4209                 }
4210
4211                 if (!selection_surface) {
4212                         return;
4213                 }
4214
4215                 selection_width = cairo_image_surface_get_width (selection_surface);
4216                 selection_height = cairo_image_surface_get_height (selection_surface);
4217
4218                 cairo_save (cr);
4219                 cairo_translate (cr, overlap.x, overlap.y);
4220
4221                 if (width != selection_width || height != selection_height) {
4222                         cairo_pattern_set_filter (cairo_get_source (cr),
4223                                                   CAIRO_FILTER_FAST);
4224                         cairo_scale (cr,
4225                                      (gdouble)width / selection_width,
4226                                      (gdouble)height / selection_height);
4227                 }
4228
4229                 cairo_surface_set_device_offset (selection_surface,
4230                                                  overlap.x - real_page_area.x,
4231                                                  overlap.y - real_page_area.y);
4232
4233                 cairo_set_source_surface (cr, selection_surface, 0, 0);
4234                 cairo_paint (cr);
4235                 cairo_restore (cr);
4236         }
4237 }
4238
4239 /*** GObject functions ***/
4240
4241 static void
4242 ev_view_finalize (GObject *object)
4243 {
4244         EvView *view = EV_VIEW (object);
4245
4246         clear_selection (view);
4247         clear_link_selected (view);
4248
4249         if (view->synctex_result) {
4250                 g_free (view->synctex_result);
4251                 view->synctex_result = NULL;
4252         }
4253
4254         if (view->image_dnd_info.image)
4255                 g_object_unref (view->image_dnd_info.image);
4256         view->image_dnd_info.image = NULL;
4257
4258         G_OBJECT_CLASS (ev_view_parent_class)->finalize (object);
4259 }
4260
4261 static void
4262 ev_view_destroy (GtkObject *object)
4263 {
4264         EvView *view = EV_VIEW (object);
4265
4266         if (view->model) {
4267                 g_object_unref (view->model);
4268                 view->model = NULL;
4269         }
4270
4271         if (view->pixbuf_cache) {
4272                 g_object_unref (view->pixbuf_cache);
4273                 view->pixbuf_cache = NULL;
4274         }
4275
4276         if (view->document) {
4277                 g_object_unref (view->document);
4278                 view->document = NULL;
4279         }
4280
4281         if (view->page_cache) {
4282                 g_object_unref (view->page_cache);
4283                 view->page_cache = NULL;
4284         }
4285
4286         ev_view_window_children_free (view);
4287
4288         if (view->selection_scroll_id) {
4289             g_source_remove (view->selection_scroll_id);
4290             view->selection_scroll_id = 0;
4291         }
4292
4293         if (view->selection_update_id) {
4294             g_source_remove (view->selection_update_id);
4295             view->selection_update_id = 0;
4296         }
4297
4298         if (view->scroll_info.timeout_id) {
4299             g_source_remove (view->scroll_info.timeout_id);
4300             view->scroll_info.timeout_id = 0;
4301         }
4302
4303         if (view->drag_info.drag_timeout_id) {
4304                 g_source_remove (view->drag_info.drag_timeout_id);
4305                 view->drag_info.drag_timeout_id = 0;
4306         }
4307
4308         if (view->drag_info.release_timeout_id) {
4309                 g_source_remove (view->drag_info.release_timeout_id);
4310                 view->drag_info.release_timeout_id = 0;
4311         }
4312
4313         if (view->loading_timeout) {
4314                 g_source_remove (view->loading_timeout);
4315                 view->loading_timeout = 0;
4316         }
4317
4318         ev_view_set_scroll_adjustments (GTK_LAYOUT (view), NULL, NULL);
4319
4320         GTK_OBJECT_CLASS (ev_view_parent_class)->destroy (object);
4321 }
4322
4323 static AtkObject *
4324 ev_view_get_accessible (GtkWidget *widget)
4325 {
4326         static gboolean first_time = TRUE;
4327
4328         if (first_time) {
4329                 AtkObjectFactory *factory;
4330                 AtkRegistry *registry;
4331                 GType derived_type;
4332                 GType derived_atk_type;
4333
4334                 /*
4335                  * Figure out whether accessibility is enabled by looking at the
4336                  * type of the accessible object which would be created for
4337                  * the parent type of EvView.
4338                  */
4339                 derived_type = g_type_parent (EV_TYPE_VIEW);
4340
4341                 registry = atk_get_default_registry ();
4342                 factory = atk_registry_get_factory (registry,
4343                                                     derived_type);
4344                 derived_atk_type = atk_object_factory_get_accessible_type (factory);
4345                 if (g_type_is_a (derived_atk_type, GTK_TYPE_ACCESSIBLE))
4346                         atk_registry_set_factory_type (registry,
4347                                                        EV_TYPE_VIEW,
4348                                                        ev_view_accessible_factory_get_type ());
4349                 first_time = FALSE;
4350         }
4351         return GTK_WIDGET_CLASS (ev_view_parent_class)->get_accessible (widget);
4352 }
4353
4354 static void
4355 ev_view_class_init (EvViewClass *class)
4356 {
4357         GObjectClass *object_class = G_OBJECT_CLASS (class);
4358         GtkObjectClass *gtk_object_class = GTK_OBJECT_CLASS (class);
4359         GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
4360         GtkLayoutClass *layout_class = GTK_LAYOUT_CLASS (class);
4361         GtkBindingSet *binding_set;
4362
4363         object_class->finalize = ev_view_finalize;
4364
4365         widget_class->expose_event = ev_view_expose_event;
4366         widget_class->button_press_event = ev_view_button_press_event;
4367         widget_class->motion_notify_event = ev_view_motion_notify_event;
4368         widget_class->button_release_event = ev_view_button_release_event;
4369         widget_class->key_press_event = ev_view_key_press_event;
4370         widget_class->focus_in_event = ev_view_focus_in;
4371         widget_class->focus_out_event = ev_view_focus_out;
4372         widget_class->get_accessible = ev_view_get_accessible;
4373         widget_class->size_request = ev_view_size_request;
4374         widget_class->size_allocate = ev_view_size_allocate;
4375         widget_class->realize = ev_view_realize;
4376         widget_class->scroll_event = ev_view_scroll_event;
4377         widget_class->enter_notify_event = ev_view_enter_notify_event;
4378         widget_class->leave_notify_event = ev_view_leave_notify_event;
4379         widget_class->style_set = ev_view_style_set;
4380         widget_class->drag_data_get = ev_view_drag_data_get;
4381         widget_class->drag_motion = ev_view_drag_motion;
4382         widget_class->popup_menu = ev_view_popup_menu;
4383         widget_class->query_tooltip = ev_view_query_tooltip;
4384
4385         gtk_object_class->destroy = ev_view_destroy;
4386
4387         layout_class->set_scroll_adjustments = ev_view_set_scroll_adjustments;
4388
4389         class->binding_activated = ev_view_scroll;
4390
4391         signals[SIGNAL_BINDING_ACTIVATED] = g_signal_new ("binding_activated",
4392                          G_TYPE_FROM_CLASS (object_class),
4393                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4394                          G_STRUCT_OFFSET (EvViewClass, binding_activated),
4395                          NULL, NULL,
4396                          ev_view_marshal_VOID__ENUM_BOOLEAN,
4397                          G_TYPE_NONE, 2,
4398                          GTK_TYPE_SCROLL_TYPE,
4399                          G_TYPE_BOOLEAN);
4400         signals[SIGNAL_HANDLE_LINK] = g_signal_new ("handle-link",
4401                          G_TYPE_FROM_CLASS (object_class),
4402                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4403                          G_STRUCT_OFFSET (EvViewClass, handle_link),
4404                          NULL, NULL,
4405                          g_cclosure_marshal_VOID__OBJECT,
4406                          G_TYPE_NONE, 1,
4407                          G_TYPE_OBJECT);
4408         signals[SIGNAL_EXTERNAL_LINK] = g_signal_new ("external-link",
4409                          G_TYPE_FROM_CLASS (object_class),
4410                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4411                          G_STRUCT_OFFSET (EvViewClass, external_link),
4412                          NULL, NULL,
4413                          g_cclosure_marshal_VOID__OBJECT,
4414                          G_TYPE_NONE, 1,
4415                          G_TYPE_OBJECT);
4416         signals[SIGNAL_POPUP_MENU] = g_signal_new ("popup",
4417                          G_TYPE_FROM_CLASS (object_class),
4418                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4419                          G_STRUCT_OFFSET (EvViewClass, popup_menu),
4420                          NULL, NULL,
4421                          g_cclosure_marshal_VOID__POINTER,
4422                          G_TYPE_NONE, 1,
4423                          G_TYPE_POINTER);
4424         signals[SIGNAL_SELECTION_CHANGED] = g_signal_new ("selection-changed",
4425                          G_TYPE_FROM_CLASS (object_class),
4426                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4427                          G_STRUCT_OFFSET (EvViewClass, selection_changed),
4428                          NULL, NULL,
4429                          g_cclosure_marshal_VOID__VOID,
4430                          G_TYPE_NONE, 0,
4431                          G_TYPE_NONE);
4432         signals[SIGNAL_SYNC_SOURCE] = g_signal_new ("sync-source",
4433                          G_TYPE_FROM_CLASS (object_class),
4434                          G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
4435                          G_STRUCT_OFFSET (EvViewClass, sync_source),
4436                          NULL, NULL,
4437                          g_cclosure_marshal_VOID__POINTER,
4438                          G_TYPE_NONE, 1,
4439                          G_TYPE_POINTER);
4440
4441         binding_set = gtk_binding_set_by_class (class);
4442
4443         add_scroll_binding_keypad (binding_set, GDK_Left,  0, GTK_SCROLL_STEP_BACKWARD, TRUE);
4444         add_scroll_binding_keypad (binding_set, GDK_Right, 0, GTK_SCROLL_STEP_FORWARD,  TRUE);
4445         add_scroll_binding_keypad (binding_set, GDK_Left,  GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, TRUE);
4446         add_scroll_binding_keypad (binding_set, GDK_Right, GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  TRUE);
4447         add_scroll_binding_keypad (binding_set, GDK_Up,    0, GTK_SCROLL_STEP_BACKWARD, FALSE);
4448         add_scroll_binding_keypad (binding_set, GDK_Down,  0, GTK_SCROLL_STEP_FORWARD,  FALSE);
4449         add_scroll_binding_keypad (binding_set, GDK_Up,    GDK_MOD1_MASK, GTK_SCROLL_STEP_DOWN, FALSE);
4450         add_scroll_binding_keypad (binding_set, GDK_Down,  GDK_MOD1_MASK, GTK_SCROLL_STEP_UP,  FALSE);
4451         gtk_binding_entry_add_signal (binding_set, GDK_H, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4452                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, TRUE);
4453         gtk_binding_entry_add_signal (binding_set, GDK_J, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4454                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, FALSE);
4455         gtk_binding_entry_add_signal (binding_set, GDK_K, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4456                                       GTK_SCROLL_STEP_BACKWARD, G_TYPE_BOOLEAN, FALSE);
4457         gtk_binding_entry_add_signal (binding_set, GDK_L, 0, "binding_activated", 2, GTK_TYPE_SCROLL_TYPE,
4458                                       GTK_SCROLL_STEP_FORWARD, G_TYPE_BOOLEAN, TRUE);
4459
4460 }
4461
4462 static void
4463 ev_view_init (EvView *view)
4464 {
4465         gtk_widget_set_can_focus (GTK_WIDGET (view), TRUE);
4466
4467         view->start_page = -1;
4468         view->end_page = -1;
4469         view->spacing = 5;
4470         view->scale = 1.0;
4471         view->current_page = 0;
4472         view->pressed_button = -1;
4473         view->cursor = EV_VIEW_CURSOR_NORMAL;
4474         view->drag_info.in_drag = FALSE;
4475         view->scroll_info.autoscrolling = FALSE;
4476         view->selection_info.selections = NULL;
4477         view->selection_info.in_selection = FALSE;
4478         view->selection_info.in_drag = FALSE;
4479         view->selection_mode = EV_VIEW_SELECTION_TEXT;
4480         view->continuous = TRUE;
4481         view->dual_page = FALSE;
4482         view->fullscreen = FALSE;
4483         view->sizing_mode = EV_SIZING_FIT_WIDTH;
4484         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4485         view->jump_to_find_result = TRUE;
4486         view->highlight_find_results = FALSE;
4487
4488         gtk_layout_set_hadjustment (GTK_LAYOUT (view), NULL);
4489         gtk_layout_set_vadjustment (GTK_LAYOUT (view), NULL);
4490 }
4491
4492 /*** Callbacks ***/
4493
4494 static void
4495 ev_view_change_page (EvView *view,
4496                      gint    new_page)
4497 {
4498         gint x, y;
4499
4500         view->current_page = new_page;
4501         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4502
4503         hide_loading_window (view);
4504
4505         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4506         ev_view_handle_cursor_over_xy (view, x, y);
4507
4508         gtk_widget_queue_resize (GTK_WIDGET (view));
4509 }
4510
4511 static void
4512 job_finished_cb (EvPixbufCache  *pixbuf_cache,
4513                  cairo_region_t *region,
4514                  EvView         *view)
4515 {
4516         if (region) {
4517                 GdkWindow *bin_window;
4518
4519                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4520                 gdk_window_invalidate_region (bin_window, region, TRUE);
4521         } else {
4522                 gtk_widget_queue_draw (GTK_WIDGET (view));
4523         }
4524 }
4525
4526 static void
4527 ev_view_page_changed_cb (EvDocumentModel *model,
4528                          gint             old_page,
4529                          gint             new_page,
4530                          EvView          *view)
4531 {
4532         if (!view->document)
4533                 return;
4534
4535         if (view->current_page != new_page) {
4536                 ev_view_change_page (view, new_page);
4537         } else {
4538                 gtk_widget_queue_draw (GTK_WIDGET (view));
4539         }
4540
4541         view->find_result = 0;
4542 }
4543
4544 static void
4545 on_adjustment_value_changed (GtkAdjustment *adjustment,
4546                              EvView        *view)
4547 {
4548         int dx = 0, dy = 0;
4549         gint x, y;
4550         gint value;
4551         GList *children, *l;
4552
4553         if (!gtk_widget_get_realized (GTK_WIDGET (view)))
4554                 return;
4555
4556         if (view->hadjustment) {
4557                 value = (gint) gtk_adjustment_get_value (view->hadjustment);
4558                 dx = view->scroll_x - value;
4559                 view->scroll_x = value;
4560         } else {
4561                 view->scroll_x = 0;
4562         }
4563
4564         if (view->vadjustment) {
4565                 value = (gint) gtk_adjustment_get_value (view->vadjustment);
4566                 dy = view->scroll_y - value;
4567                 view->scroll_y = value;
4568         } else {
4569                 view->scroll_y = 0;
4570         }
4571
4572         children = gtk_container_get_children (GTK_CONTAINER (view));
4573         for (l = children; l && l->data; l = g_list_next (l)) {
4574                 gint       child_x, child_y;
4575                 GtkWidget *child = (GtkWidget *)l->data;
4576
4577                 gtk_container_child_get (GTK_CONTAINER (view),
4578                                          child,
4579                                          "x", &child_x,
4580                                          "y", &child_y,
4581                                          NULL);
4582                 gtk_layout_move (GTK_LAYOUT (view), child, child_x + dx, child_y + dy);
4583         }
4584         g_list_free (children);
4585
4586         for (l = view->window_children; l && l->data; l = g_list_next (l)) {
4587                 EvViewWindowChild *child;
4588
4589                 child = (EvViewWindowChild *)l->data;
4590
4591                 ev_view_window_child_move (view, child, child->x + dx, child->y + dy);
4592         }
4593
4594         if (view->pending_resize) {
4595                 gtk_widget_queue_draw (GTK_WIDGET (view));
4596         } else {
4597                 GdkWindow *bin_window;
4598
4599                 bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
4600                 gdk_window_scroll (bin_window, dx, dy);
4601         }
4602
4603         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4604         ev_view_handle_cursor_over_xy (view, x, y);
4605
4606         if (view->document)
4607                 view_update_range_and_current_page (view);
4608 }
4609
4610 GtkWidget*
4611 ev_view_new (void)
4612 {
4613         GtkWidget *view;
4614
4615         view = g_object_new (EV_TYPE_VIEW, NULL);
4616
4617         return view;
4618 }
4619
4620 static void
4621 setup_caches (EvView *view)
4622 {
4623         gboolean inverted_colors;
4624
4625         view->height_to_page_cache = ev_view_get_height_to_page_cache (view);
4626         view->pixbuf_cache = ev_pixbuf_cache_new (GTK_WIDGET (view), view->model, view->pixbuf_cache_size);
4627         view->page_cache = ev_page_cache_new (view->document);
4628         inverted_colors = ev_document_model_get_inverted_colors (view->model);
4629         ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
4630         g_signal_connect (view->pixbuf_cache, "job-finished", G_CALLBACK (job_finished_cb), view);
4631 }
4632
4633 static void
4634 clear_caches (EvView *view)
4635 {
4636         if (view->pixbuf_cache) {
4637                 g_object_unref (view->pixbuf_cache);
4638                 view->pixbuf_cache = NULL;
4639         }
4640
4641         if (view->page_cache) {
4642                 g_object_unref (view->page_cache);
4643                 view->page_cache = NULL;
4644         }
4645 }
4646
4647 /**
4648  * ev_view_set_page_cache_size:
4649  * @view:
4650  * @cache_size:
4651  *
4652  * Sets the maximum size in bytes that will be used to cache
4653  * rendered pages. Use 0 to disable caching rendered pages.
4654  *
4655  * Note that this limit doesn't affect the current visible page range,
4656  * which will always be rendered. In order to limit the total memory used
4657  * you have to use ev_document_model_set_max_scale() too.
4658  *
4659  */
4660 void
4661 ev_view_set_page_cache_size (EvView *view,
4662                              gsize   cache_size)
4663 {
4664         if (view->pixbuf_cache_size == cache_size)
4665                 return;
4666
4667         view->pixbuf_cache_size = cache_size;
4668         if (view->pixbuf_cache)
4669                 ev_pixbuf_cache_set_max_size (view->pixbuf_cache, cache_size);
4670 }
4671
4672 void
4673 ev_view_set_loading (EvView       *view,
4674                      gboolean      loading)
4675 {
4676         if (view->loading && !loading)
4677                 hide_loading_window (view);
4678         view->loading = loading;
4679         gtk_widget_queue_draw (GTK_WIDGET (view));
4680 }
4681
4682 static gboolean
4683 ev_view_autoscroll_cb (EvView *view)
4684 {
4685         gdouble speed, value;
4686
4687         /* If the user stops autoscrolling, autoscrolling will be
4688          * set to false but the timeout will continue; stop the timeout: */
4689         if (!view->scroll_info.autoscrolling) {
4690                 view->scroll_info.timeout_id = 0;
4691                 return FALSE;
4692         }
4693
4694         if (view->scroll_info.last_y > view->scroll_info.start_y &&
4695                 (view->scroll_info.last_y < view->scroll_info.start_y))
4696                 return TRUE;
4697
4698         /* Replace 100 with your speed of choice: The lower the faster.
4699          * Replace 3 with another speed of choice: The higher, the faster it accelerated
4700          *      based on the distance of the starting point from the mouse
4701          * (All also effected by the timeout interval of this callback) */
4702
4703         if (view->scroll_info.start_y > view->scroll_info.last_y)
4704                 speed = -pow ((((gdouble)view->scroll_info.start_y - view->scroll_info.last_y) / 100), 3);
4705         else
4706                 speed = pow ((((gdouble)view->scroll_info.last_y - view->scroll_info.start_y) / 100), 3);
4707
4708         value = gtk_adjustment_get_value (view->vadjustment);
4709         value = CLAMP (value + speed, 0,
4710                        gtk_adjustment_get_upper (view->vadjustment) -
4711                        gtk_adjustment_get_page_size (view->vadjustment));
4712         gtk_adjustment_set_value (view->vadjustment, value);
4713
4714         return TRUE;
4715
4716 }
4717
4718 void
4719 ev_view_autoscroll_start (EvView *view)
4720 {
4721         gint x, y;
4722
4723         g_return_if_fail (EV_IS_VIEW (view));
4724
4725         if (view->scroll_info.autoscrolling)
4726                 return;
4727
4728         view->scroll_info.autoscrolling = TRUE;
4729         view->scroll_info.timeout_id =
4730                 g_timeout_add (20, (GSourceFunc)ev_view_autoscroll_cb,
4731                                view);
4732
4733         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4734         ev_view_handle_cursor_over_xy (view, x, y);
4735 }
4736
4737 void
4738 ev_view_autoscroll_stop (EvView *view)
4739 {
4740         gint x, y;
4741
4742         g_return_if_fail (EV_IS_VIEW (view));
4743
4744         if (!view->scroll_info.autoscrolling)
4745                 return;
4746
4747         view->scroll_info.autoscrolling = FALSE;
4748         if (view->scroll_info.timeout_id) {
4749                 g_source_remove (view->scroll_info.timeout_id);
4750                 view->scroll_info.timeout_id = 0;
4751         }
4752
4753         gtk_widget_get_pointer (GTK_WIDGET (view), &x, &y);
4754         ev_view_handle_cursor_over_xy (view, x, y);
4755 }
4756
4757 static void
4758 ev_view_document_changed_cb (EvDocumentModel *model,
4759                              GParamSpec      *pspec,
4760                              EvView          *view)
4761 {
4762         EvDocument *document = ev_document_model_get_document (model);
4763
4764         if (document != view->document) {
4765                 gint current_page;
4766
4767                 clear_caches (view);
4768
4769                 if (view->document) {
4770                         g_object_unref (view->document);
4771                 }
4772
4773                 view->document = document;
4774                 view->find_result = 0;
4775
4776                 if (view->document) {
4777                         view->loading = FALSE;
4778                         g_object_ref (view->document);
4779                         setup_caches (view);
4780                 }
4781
4782                 current_page = ev_document_model_get_page (model);
4783                 if (view->current_page != current_page) {
4784                         ev_view_change_page (view, current_page);
4785                 } else {
4786                         view->pending_scroll = SCROLL_TO_KEEP_POSITION;
4787                         gtk_widget_queue_resize (GTK_WIDGET (view));
4788                 }
4789         }
4790 }
4791
4792 static void
4793 ev_view_rotation_changed_cb (EvDocumentModel *model,
4794                              GParamSpec      *pspec,
4795                              EvView          *view)
4796 {
4797         gint rotation = ev_document_model_get_rotation (model);
4798
4799         view->rotation = rotation;
4800
4801         if (view->pixbuf_cache) {
4802                 ev_pixbuf_cache_clear (view->pixbuf_cache);
4803                 if (!ev_document_is_page_size_uniform (view->document))
4804                         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4805                 gtk_widget_queue_resize (GTK_WIDGET (view));
4806         }
4807
4808         ev_view_remove_all (view);
4809
4810         if (rotation != 0)
4811                 clear_selection (view);
4812 }
4813
4814 static void
4815 ev_view_inverted_colors_changed_cb (EvDocumentModel *model,
4816                                     GParamSpec      *pspec,
4817                                     EvView          *view)
4818 {
4819         if (view->pixbuf_cache) {
4820                 gboolean inverted_colors;
4821
4822                 inverted_colors = ev_document_model_get_inverted_colors (model);
4823                 ev_pixbuf_cache_set_inverted_colors (view->pixbuf_cache, inverted_colors);
4824                 gtk_widget_queue_draw (GTK_WIDGET (view));
4825         }
4826 }
4827
4828 static void
4829 ev_view_sizing_mode_changed_cb (EvDocumentModel *model,
4830                                 GParamSpec      *pspec,
4831                                 EvView          *view)
4832 {
4833         EvSizingMode mode = ev_document_model_get_sizing_mode (model);
4834
4835         view->sizing_mode = mode;
4836         if (mode != EV_SIZING_FREE)
4837                 gtk_widget_queue_resize (GTK_WIDGET (view));
4838 }
4839
4840 #define EPSILON 0.0000001
4841 static void
4842 ev_view_scale_changed_cb (EvDocumentModel *model,
4843                           GParamSpec      *pspec,
4844                           EvView          *view)
4845 {
4846         gdouble scale = ev_document_model_get_scale (model);
4847
4848         if (ABS (view->scale - scale) < EPSILON)
4849                 return;
4850
4851         view->scale = scale;
4852
4853         view->pending_resize = TRUE;
4854         if (view->sizing_mode == EV_SIZING_FREE)
4855                 gtk_widget_queue_resize (GTK_WIDGET (view));
4856 }
4857
4858 static void
4859 ev_view_continuous_changed_cb (EvDocumentModel *model,
4860                                GParamSpec      *pspec,
4861                                EvView          *view)
4862 {
4863         gboolean continuous = ev_document_model_get_continuous (model);
4864
4865         view->continuous = continuous;
4866         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4867         gtk_widget_queue_resize (GTK_WIDGET (view));
4868 }
4869
4870 static void
4871 ev_view_dual_page_changed_cb (EvDocumentModel *model,
4872                               GParamSpec      *pspec,
4873                               EvView          *view)
4874 {
4875         gboolean dual_page = ev_document_model_get_dual_page (model);
4876
4877         view->dual_page = dual_page;
4878         view->pending_scroll = SCROLL_TO_PAGE_POSITION;
4879         /* FIXME: if we're keeping the pixbuf cache around, we should extend the
4880          * preload_cache_size to be 2 if dual_page is set.
4881          */
4882         gtk_widget_queue_resize (GTK_WIDGET (view));
4883 }
4884
4885 static void
4886 ev_view_fullscreen_changed_cb (EvDocumentModel *model,
4887                                GParamSpec      *pspec,
4888                                EvView          *view)
4889 {
4890         gboolean fullscreen = ev_document_model_get_fullscreen (model);
4891
4892         view->fullscreen = fullscreen;
4893         gtk_widget_queue_resize (GTK_WIDGET (view));
4894 }
4895
4896 void
4897 ev_view_set_model (EvView          *view,
4898                    EvDocumentModel *model)
4899 {
4900         g_return_if_fail (EV_IS_VIEW (view));
4901         g_return_if_fail (EV_IS_DOCUMENT_MODEL (model));
4902
4903         if (model == view->model)
4904                 return;
4905
4906         if (view->model) {
4907                 g_signal_handlers_disconnect_by_func (view->model,
4908                                                       ev_view_document_changed_cb,
4909                                                       view);
4910                 g_signal_handlers_disconnect_by_func (view->model,
4911                                                       ev_view_page_changed_cb,
4912                                                       view);
4913                 g_object_unref (view->model);
4914         }
4915         view->model = g_object_ref (model);
4916
4917         /* Initialize view from model */
4918         view->rotation = ev_document_model_get_rotation (view->model);
4919         view->sizing_mode = ev_document_model_get_sizing_mode (view->model);
4920         view->scale = ev_document_model_get_scale (view->model);
4921         view->continuous = ev_document_model_get_continuous (view->model);
4922         view->dual_page = ev_document_model_get_dual_page (view->model);
4923         view->fullscreen = ev_document_model_get_fullscreen (view->model);
4924         ev_view_document_changed_cb (view->model, NULL, view);
4925
4926         g_signal_connect (view->model, "notify::document",
4927                           G_CALLBACK (ev_view_document_changed_cb),
4928                           view);
4929         g_signal_connect (view->model, "notify::rotation",
4930                           G_CALLBACK (ev_view_rotation_changed_cb),
4931                           view);
4932         g_signal_connect (view->model, "notify::inverted-colors",
4933                           G_CALLBACK (ev_view_inverted_colors_changed_cb),
4934                           view);
4935         g_signal_connect (view->model, "notify::sizing-mode",
4936                           G_CALLBACK (ev_view_sizing_mode_changed_cb),
4937                           view);
4938         g_signal_connect (view->model, "notify::scale",
4939                           G_CALLBACK (ev_view_scale_changed_cb),
4940                           view);
4941         g_signal_connect (view->model, "notify::continuous",
4942                           G_CALLBACK (ev_view_continuous_changed_cb),
4943                           view);
4944         g_signal_connect (view->model, "notify::dual-page",
4945                           G_CALLBACK (ev_view_dual_page_changed_cb),
4946                           view);
4947         g_signal_connect (view->model, "notify::fullscreen",
4948                           G_CALLBACK (ev_view_fullscreen_changed_cb),
4949                           view);
4950         g_signal_connect (view->model, "page-changed",
4951                           G_CALLBACK (ev_view_page_changed_cb),
4952                           view);
4953 }
4954
4955 static void
4956 ev_view_reload_page (EvView         *view,
4957                      gint            page,
4958                      cairo_region_t *region)
4959 {
4960         ev_pixbuf_cache_reload_page (view->pixbuf_cache,
4961                                      region,
4962                                      page,
4963                                      view->rotation,
4964                                      view->scale);
4965 }
4966
4967 void
4968 ev_view_reload (EvView *view)
4969 {
4970         ev_pixbuf_cache_clear (view->pixbuf_cache);
4971         view_update_range_and_current_page (view);
4972 }
4973
4974 /*** Zoom and sizing mode ***/
4975
4976 gboolean
4977 ev_view_can_zoom_in (EvView *view)
4978 {
4979         return view->scale * ZOOM_IN_FACTOR <= ev_document_model_get_max_scale (view->model);
4980 }
4981
4982 gboolean
4983 ev_view_can_zoom_out (EvView *view)
4984 {
4985         return view->scale * ZOOM_OUT_FACTOR >= ev_document_model_get_min_scale (view->model);
4986 }
4987
4988 void
4989 ev_view_zoom_in (EvView *view)
4990 {
4991         gdouble scale;
4992
4993         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
4994
4995         view->pending_scroll = SCROLL_TO_CENTER;
4996         scale = ev_document_model_get_scale (view->model) * ZOOM_IN_FACTOR;
4997         ev_document_model_set_scale (view->model, scale);
4998 }
4999
5000 void
5001 ev_view_zoom_out (EvView *view)
5002 {
5003         gdouble scale;
5004
5005         g_return_if_fail (view->sizing_mode == EV_SIZING_FREE);
5006
5007         view->pending_scroll = SCROLL_TO_CENTER;
5008         scale = ev_document_model_get_scale (view->model) * ZOOM_OUT_FACTOR;
5009         ev_document_model_set_scale (view->model, scale);
5010 }
5011
5012 static double
5013 zoom_for_size_fit_width (gdouble doc_width,
5014                          gdouble doc_height,
5015                          int     target_width,
5016                          int     target_height)
5017 {
5018         return (double)target_width / doc_width;
5019 }
5020
5021 static double
5022 zoom_for_size_fit_height (gdouble doc_width,
5023                           gdouble doc_height,
5024                           int     target_width,
5025                           int     target_height)
5026 {
5027         return (double)target_height / doc_height;
5028 }
5029
5030 static double
5031 zoom_for_size_best_fit (gdouble doc_width,
5032                         gdouble doc_height,
5033                         int     target_width,
5034                         int     target_height)
5035 {
5036         double w_scale;
5037         double h_scale;
5038
5039         w_scale = (double)target_width / doc_width;
5040         h_scale = (double)target_height / doc_height;
5041
5042         return MIN (w_scale, h_scale);
5043 }
5044
5045 static void
5046 ev_view_zoom_for_size_continuous_and_dual_page (EvView *view,
5047                                                 int     width,
5048                                                 int     height)
5049 {
5050         gdouble doc_width, doc_height;
5051         GtkBorder border;
5052         gdouble scale;
5053         gint sb_size;
5054
5055         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5056         if (view->rotation == 90 || view->rotation == 270) {
5057                 gdouble tmp;
5058
5059                 tmp = doc_width;
5060                 doc_width = doc_height;
5061                 doc_height = tmp;
5062         }
5063
5064         compute_border (view, doc_width, doc_height, &border);
5065
5066         doc_width *= 2;
5067         width -= (2 * (border.left + border.right) + 3 * view->spacing);
5068         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5069
5070         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5071
5072         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5073                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5074         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5075                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5076         else
5077                 g_assert_not_reached ();
5078
5079         ev_document_model_set_scale (view->model, scale);
5080 }
5081
5082 static void
5083 ev_view_zoom_for_size_continuous (EvView *view,
5084                                   int     width,
5085                                   int     height)
5086 {
5087         gdouble doc_width, doc_height;
5088         GtkBorder border;
5089         gdouble scale;
5090         gint sb_size;
5091
5092         ev_document_get_max_page_size (view->document, &doc_width, &doc_height);
5093         if (view->rotation == 90 || view->rotation == 270) {
5094                 gdouble tmp;
5095
5096                 tmp = doc_width;
5097                 doc_width = doc_height;
5098                 doc_height = tmp;
5099         }
5100
5101         compute_border (view, doc_width, doc_height, &border);
5102
5103         width -= (border.left + border.right + 2 * view->spacing);
5104         height -= (border.top + border.bottom + 2 * view->spacing - 1);
5105
5106         sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5107
5108         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5109                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5110         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5111                 scale = zoom_for_size_best_fit (doc_width, doc_height, width - sb_size, height);
5112         else
5113                 g_assert_not_reached ();
5114
5115         ev_document_model_set_scale (view->model, scale);
5116 }
5117
5118 static void
5119 ev_view_zoom_for_size_dual_page (EvView *view,
5120                                  int     width,
5121                                  int     height)
5122 {
5123         GtkBorder border;
5124         gdouble doc_width, doc_height;
5125         gdouble scale;
5126         gint other_page;
5127
5128         other_page = view->current_page ^ 1;
5129
5130         /* Find the largest of the two. */
5131         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5132         if (other_page < ev_document_get_n_pages (view->document)) {
5133                 gdouble width_2, height_2;
5134
5135                 get_doc_page_size (view, other_page, &width_2, &height_2);
5136                 if (width_2 > doc_width)
5137                         doc_width = width_2;
5138                 if (height_2 > doc_height)
5139                         doc_height = height_2;
5140         }
5141         compute_border (view, width, height, &border);
5142
5143         doc_width = doc_width * 2;
5144         width -= ((border.left + border.right)* 2 + 3 * view->spacing);
5145         height -= (border.top + border.bottom + 2 * view->spacing);
5146
5147         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5148                 gint sb_size;
5149
5150                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5151                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5152         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5153                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5154         else
5155                 g_assert_not_reached ();
5156
5157         ev_document_model_set_scale (view->model, scale);
5158 }
5159
5160 static void
5161 ev_view_zoom_for_size_single_page (EvView *view,
5162                                    int     width,
5163                                    int     height)
5164 {
5165         gdouble doc_width, doc_height;
5166         GtkBorder border;
5167         gdouble scale;
5168
5169         get_doc_page_size (view, view->current_page, &doc_width, &doc_height);
5170
5171         /* Get an approximate border */
5172         compute_border (view, width, height, &border);
5173
5174         width -= (border.left + border.right + 2 * view->spacing);
5175         height -= (border.top + border.bottom + 2 * view->spacing);
5176
5177         if (view->sizing_mode == EV_SIZING_FIT_WIDTH) {
5178                 gint sb_size;
5179
5180                 sb_size = ev_view_get_scrollbar_size (view, GTK_ORIENTATION_VERTICAL);
5181                 scale = zoom_for_size_fit_width (doc_width, doc_height, width - sb_size, height);
5182         } else if (view->sizing_mode == EV_SIZING_BEST_FIT)
5183                 scale = zoom_for_size_best_fit (doc_width, doc_height, width, height);
5184         else
5185                 g_assert_not_reached ();
5186
5187         ev_document_model_set_scale (view->model, scale);
5188 }
5189
5190 static void
5191 ev_view_zoom_for_size (EvView *view,
5192                        int     width,
5193                        int     height)
5194 {
5195         g_return_if_fail (EV_IS_VIEW (view));
5196         g_return_if_fail (view->sizing_mode == EV_SIZING_FIT_WIDTH ||
5197                           view->sizing_mode == EV_SIZING_BEST_FIT);
5198         g_return_if_fail (width >= 0);
5199         g_return_if_fail (height >= 0);
5200
5201         if (view->document == NULL)
5202                 return;
5203
5204         if (view->continuous && view->dual_page)
5205                 ev_view_zoom_for_size_continuous_and_dual_page (view, width, height);
5206         else if (view->continuous)
5207                 ev_view_zoom_for_size_continuous (view, width, height);
5208         else if (view->dual_page)
5209                 ev_view_zoom_for_size_dual_page (view, width, height);
5210         else
5211                 ev_view_zoom_for_size_single_page (view, width, height);
5212 }
5213
5214 /*** Find ***/
5215 static gint
5216 ev_view_find_get_n_results (EvView *view, gint page)
5217 {
5218         return view->find_pages ? g_list_length (view->find_pages[page]) : 0;
5219 }
5220
5221 static EvRectangle *
5222 ev_view_find_get_result (EvView *view, gint page, gint result)
5223 {
5224         return view->find_pages ? (EvRectangle *) g_list_nth_data (view->find_pages[page], result) : NULL;
5225 }
5226
5227 static void
5228 jump_to_find_result (EvView *view)
5229 {
5230         gint n_results;
5231         gint page = view->current_page;
5232
5233         n_results = ev_view_find_get_n_results (view, page);
5234
5235         if (n_results > 0 && view->find_result < n_results) {
5236                 EvRectangle *rect;
5237                 GdkRectangle view_rect;
5238
5239                 rect = ev_view_find_get_result (view, page, view->find_result);
5240                 doc_rect_to_view_rect (view, page, rect, &view_rect);
5241                 ensure_rectangle_is_visible (view, &view_rect);
5242                 view->jump_to_find_result = FALSE;
5243         }
5244 }
5245
5246 /**
5247  * jump_to_find_page
5248  * @view: #EvView instance
5249  * @direction: Direction to look
5250  * @shift: Shift from current page
5251  *
5252  * Jumps to the first page that has occurences of searched word.
5253  * Uses a direction where to look and a shift from current page.
5254  *
5255  */
5256 static void
5257 jump_to_find_page (EvView *view, EvViewFindDirection direction, gint shift)
5258 {
5259         int n_pages, i;
5260
5261         n_pages = ev_document_get_n_pages (view->document);
5262
5263         for (i = 0; i < n_pages; i++) {
5264                 int page;
5265
5266                 if (direction == EV_VIEW_FIND_NEXT)
5267                         page = view->current_page + i;
5268                 else
5269                         page = view->current_page - i;
5270                 page += shift;
5271
5272                 if (page >= n_pages) {
5273                         page = page - n_pages;
5274                 } else if (page < 0)
5275                         page = page + n_pages;
5276
5277                 if (ev_view_find_get_n_results (view, page) > 0) {
5278                         ev_document_model_set_page (view->model, page);
5279                         break;
5280                 }
5281         }
5282 }
5283
5284 void
5285 ev_view_find_changed (EvView *view, GList **results, gint page)
5286 {
5287         view->find_pages = results;
5288
5289         if (view->jump_to_find_result == TRUE) {
5290                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 0);
5291                 jump_to_find_result (view);
5292         }
5293
5294         if (view->current_page == page)
5295                 gtk_widget_queue_draw (GTK_WIDGET (view));
5296 }
5297
5298 void
5299 ev_view_find_next (EvView *view)
5300 {
5301         gint n_results;
5302
5303         n_results = ev_view_find_get_n_results (view, view->current_page);
5304         view->find_result++;
5305
5306         if (view->find_result >= n_results) {
5307                 view->find_result = 0;
5308                 jump_to_find_page (view, EV_VIEW_FIND_NEXT, 1);
5309                 jump_to_find_result (view);
5310         } else {
5311                 jump_to_find_result (view);
5312                 gtk_widget_queue_draw (GTK_WIDGET (view));
5313         }
5314 }
5315
5316 void
5317 ev_view_find_previous (EvView *view)
5318 {
5319         view->find_result--;
5320
5321         if (view->find_result < 0) {
5322                 jump_to_find_page (view, EV_VIEW_FIND_PREV, -1);
5323                 view->find_result = MAX (0, ev_view_find_get_n_results (view, view->current_page) - 1);
5324                 jump_to_find_result (view);
5325         } else {
5326                 jump_to_find_result (view);
5327                 gtk_widget_queue_draw (GTK_WIDGET (view));
5328         }
5329 }
5330
5331 void
5332 ev_view_find_search_changed (EvView *view)
5333 {
5334         /* search string has changed, focus on new search result */
5335         view->jump_to_find_result = TRUE;
5336         view->find_pages = NULL;
5337 }
5338
5339 void
5340 ev_view_find_set_highlight_search (EvView *view, gboolean value)
5341 {
5342         view->highlight_find_results = value;
5343         gtk_widget_queue_draw (GTK_WIDGET (view));
5344 }
5345
5346 void
5347 ev_view_find_cancel (EvView *view)
5348 {
5349         view->find_pages = NULL;
5350 }
5351
5352 /*** Synctex ***/
5353 void
5354 ev_view_highlight_forward_search (EvView       *view,
5355                                   EvSourceLink *link)
5356 {
5357         EvMapping   *mapping;
5358         gint         page;
5359         GdkRectangle view_rect;
5360
5361         if (!ev_document_has_synctex (view->document))
5362                 return;
5363
5364         mapping = ev_document_synctex_forward_search (view->document, link);
5365         if (!mapping)
5366                 return;
5367
5368         if (view->synctex_result)
5369                 g_free (view->synctex_result);
5370         view->synctex_result = mapping;
5371
5372         page = GPOINTER_TO_INT (mapping->data);
5373         ev_document_model_set_page (view->model, page);
5374
5375         doc_rect_to_view_rect (view, page, &mapping->area, &view_rect);
5376         ensure_rectangle_is_visible (view, &view_rect);
5377         gtk_widget_queue_draw (GTK_WIDGET (view));
5378 }
5379
5380 /*** Selections ***/
5381
5382 /* compute_new_selection_rect/text calculates the area currently selected by
5383  * view_rect.  each handles a different mode;
5384  */
5385 static GList *
5386 compute_new_selection_rect (EvView       *view,
5387                             GdkPoint     *start,
5388                             GdkPoint     *stop)
5389 {
5390         GdkRectangle view_rect;
5391         int n_pages, i;
5392         GList *list = NULL;
5393
5394         g_assert (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE);
5395
5396         view_rect.x = MIN (start->x, stop->x);
5397         view_rect.y = MIN (start->y, stop->y);
5398         view_rect.width = MAX (start->x, stop->x) - view_rect.x;
5399         view_rect.width = MAX (start->y, stop->y) - view_rect.y;
5400
5401         n_pages = ev_document_get_n_pages (view->document);
5402
5403         for (i = 0; i < n_pages; i++) {
5404                 GdkRectangle page_area;
5405                 GtkBorder border;
5406
5407                 if (ev_view_get_page_extents (view, i, &page_area, &border)) {
5408                         GdkRectangle overlap;
5409
5410                         if (gdk_rectangle_intersect (&page_area, &view_rect, &overlap)) {
5411                                 EvViewSelection *selection;
5412
5413                                 selection = g_new0 (EvViewSelection, 1);
5414                                 selection->page = i;
5415                                 view_rect_to_doc_rect (view, &overlap, &page_area,
5416                                                        &(selection->rect));
5417
5418                                 list = g_list_append (list, selection);
5419                         }
5420                 }
5421         }
5422
5423         return list;
5424 }
5425
5426 static gboolean
5427 gdk_rectangle_point_in (GdkRectangle *rectangle,
5428                         GdkPoint     *point)
5429 {
5430         return rectangle->x <= point->x &&
5431                 rectangle->y <= point->y &&
5432                 point->x < rectangle->x + rectangle->width &&
5433                 point->y < rectangle->y + rectangle->height;
5434 }
5435
5436 static GList *
5437 compute_new_selection_text (EvView          *view,
5438                             EvSelectionStyle style,
5439                             GdkPoint        *start,
5440                             GdkPoint        *stop)
5441 {
5442         int n_pages, i, first, last;
5443         GList *list = NULL;
5444         EvViewSelection *selection;
5445         gdouble width, height;
5446         int start_page, end_page;
5447
5448         g_assert (view->selection_mode == EV_VIEW_SELECTION_TEXT);
5449
5450         n_pages = ev_document_get_n_pages (view->document);
5451
5452         /* First figure out the range of pages the selection
5453          * affects. */
5454         first = n_pages;
5455         last = 0;
5456         if (view->continuous) {
5457                 start_page = 0;
5458                 end_page = n_pages;
5459         } else if (view->dual_page) {
5460                 start_page = view->start_page;
5461                 end_page = view->end_page + 1;
5462         } else {
5463                 start_page = view->current_page;
5464                 end_page = view->current_page + 1;
5465         }
5466
5467         for (i = start_page; i < end_page; i++) {
5468                 GdkRectangle page_area;
5469                 GtkBorder border;
5470
5471                 ev_view_get_page_extents (view, i, &page_area, &border);
5472                 if (gdk_rectangle_point_in (&page_area, start) ||
5473                     gdk_rectangle_point_in (&page_area, stop)) {
5474                         if (first == n_pages)
5475                                 first = i;
5476                         last = i;
5477                 }
5478
5479         }
5480
5481         /* Now create a list of EvViewSelection's for the affected
5482          * pages.  This could be an empty list, a list of just one
5483          * page or a number of pages.*/
5484         for (i = first; i < last + 1; i++) {
5485                 GdkRectangle page_area;
5486                 GtkBorder border;
5487                 GdkPoint *point;
5488
5489                 get_doc_page_size (view, i, &width, &height);
5490
5491                 selection = g_new0 (EvViewSelection, 1);
5492                 selection->page = i;
5493                 selection->style = style;
5494                 selection->rect.x1 = selection->rect.y1 = 0;
5495                 selection->rect.x2 = width;
5496                 selection->rect.y2 = height;
5497
5498                 ev_view_get_page_extents (view, i, &page_area, &border);
5499
5500                 if (gdk_rectangle_point_in (&page_area, start))
5501                         point = start;
5502                 else
5503                         point = stop;
5504
5505                 if (i == first)
5506                         view_point_to_doc_point (view, point, &page_area,
5507                                                  &selection->rect.x1,
5508                                                  &selection->rect.y1);
5509
5510                 /* If the selection is contained within just one page,
5511                  * make sure we don't write 'start' into both points
5512                  * in selection->rect. */
5513                 if (first == last)
5514                         point = stop;
5515
5516                 if (i == last)
5517                         view_point_to_doc_point (view, point, &page_area,
5518                                                  &selection->rect.x2,
5519                                                  &selection->rect.y2);
5520
5521                 list = g_list_append (list, selection);
5522         }
5523
5524         return list;
5525 }
5526
5527 /* This function takes the newly calculated list, and figures out which regions
5528  * have changed.  It then queues a redraw approporiately.
5529  */
5530 static void
5531 merge_selection_region (EvView *view,
5532                         GList  *new_list)
5533 {
5534         GList *old_list;
5535         GList *new_list_ptr, *old_list_ptr;
5536
5537         /* Update the selection */
5538         old_list = ev_pixbuf_cache_get_selection_list (view->pixbuf_cache);
5539         g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5540         g_list_free (view->selection_info.selections);
5541         view->selection_info.selections = new_list;
5542         ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, new_list);
5543         g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
5544
5545         new_list_ptr = new_list;
5546         old_list_ptr = old_list;
5547
5548         while (new_list_ptr || old_list_ptr) {
5549                 EvViewSelection *old_sel, *new_sel;
5550                 int cur_page;
5551                 cairo_region_t *region = NULL;
5552
5553                 new_sel = (new_list_ptr) ? (new_list_ptr->data) : NULL;
5554                 old_sel = (old_list_ptr) ? (old_list_ptr->data) : NULL;
5555
5556                 /* Assume that the lists are in order, and we run through them
5557                  * comparing them, one page at a time.  We come out with the
5558                  * first page we see. */
5559                 if (new_sel && old_sel) {
5560                         if (new_sel->page < old_sel->page) {
5561                                 new_list_ptr = new_list_ptr->next;
5562                                 old_sel = NULL;
5563                         } else if (new_sel->page > old_sel->page) {
5564                                 old_list_ptr = old_list_ptr->next;
5565                                 new_sel = NULL;
5566                         } else {
5567                                 new_list_ptr = new_list_ptr->next;
5568                                 old_list_ptr = old_list_ptr->next;
5569                         }
5570                 } else if (new_sel) {
5571                         new_list_ptr = new_list_ptr->next;
5572                 } else if (old_sel) {
5573                         old_list_ptr = old_list_ptr->next;
5574                 }
5575
5576                 g_assert (new_sel || old_sel);
5577
5578                 /* is the page we're looking at on the screen?*/
5579                 cur_page = new_sel ? new_sel->page : old_sel->page;
5580                 if (cur_page < view->start_page || cur_page > view->end_page)
5581                         continue;
5582
5583                 /* seed the cache with a new page.  We are going to need the new
5584                  * region too. */
5585                 if (new_sel) {
5586                         cairo_region_t *tmp_region = NULL;
5587
5588                         ev_pixbuf_cache_get_selection_surface (view->pixbuf_cache,
5589                                                                cur_page,
5590                                                                view->scale,
5591                                                                &tmp_region);
5592
5593                         if (tmp_region && !cairo_region_is_empty (tmp_region)) {
5594                                 new_sel->covered_region = cairo_region_reference (tmp_region);
5595                         }
5596                 }
5597
5598                 /* Now we figure out what needs redrawing */
5599                 if (old_sel && new_sel) {
5600                         if (old_sel->covered_region && new_sel->covered_region) {
5601                                 cairo_region_t *tbr;
5602
5603                                 /* We only want to redraw the areas that have
5604                                  * changed, so we xor the old and new regions
5605                                  * and redraw if it's different */
5606                                 region = cairo_region_copy (old_sel->covered_region);
5607                                 tbr = cairo_region_copy (new_sel->covered_region);
5608
5609                                 /* xor old_sel, new_sel*/
5610                                 cairo_region_subtract (tbr, region);
5611                                 cairo_region_subtract (region, new_sel->covered_region);
5612                                 cairo_region_union (region, tbr);
5613                                 cairo_region_destroy (tbr);
5614
5615                                 if (cairo_region_is_empty (region)) {
5616                                         cairo_region_destroy (region);
5617                                         region = NULL;
5618                                 } else {
5619                                         gint num_rectangles = cairo_region_num_rectangles (region);
5620                                         GdkRectangle r;
5621
5622                                         /* We need to make the damage region a little bigger
5623                                          * because the edges of the old selection might change
5624                                          */
5625                                         cairo_region_get_rectangle (region, 0, &r);
5626                                         r.x -= 5;
5627                                         r.width = 5;
5628                                         cairo_region_union_rectangle (region, &r);
5629
5630                                         cairo_region_get_rectangle (region, num_rectangles - 1, &r);
5631                                         r.x += r.width;
5632                                         r.width = 5;
5633                                         cairo_region_union_rectangle (region, &r);
5634                                 }
5635                         } else if (old_sel->covered_region) {
5636                                 region = cairo_region_copy (old_sel->covered_region);
5637                         } else if (new_sel->covered_region) {
5638                                 region = cairo_region_copy (new_sel->covered_region);
5639                         }
5640                 } else if (old_sel && !new_sel) {
5641                         if (old_sel->covered_region && !cairo_region_is_empty (old_sel->covered_region)) {
5642                                 region = cairo_region_copy (old_sel->covered_region);
5643                         }
5644                 } else if (!old_sel && new_sel) {
5645                         if (new_sel->covered_region && !cairo_region_is_empty (new_sel->covered_region)) {
5646                                 region = cairo_region_copy (new_sel->covered_region);
5647                         }
5648                 } else {
5649                         g_assert_not_reached ();
5650                 }
5651
5652                 /* Redraw the damaged region! */
5653                 if (region) {
5654                         GdkWindow   *bin_window;
5655                         GdkRectangle page_area;
5656                         GtkBorder    border;
5657
5658                         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
5659                         ev_view_get_page_extents (view, cur_page, &page_area, &border);
5660                         cairo_region_translate (region,
5661                                            page_area.x + border.left - view->scroll_x,
5662                                            page_area.y + border.top - view->scroll_y);
5663                         gdk_window_invalidate_region (bin_window, region, TRUE);
5664                         cairo_region_destroy (region);
5665                 }
5666         }
5667
5668         /* Free the old list, now that we're done with it. */
5669         g_list_foreach (old_list, (GFunc) selection_free, NULL);
5670         g_list_free (old_list);
5671 }
5672
5673 static void
5674 compute_selections (EvView          *view,
5675                     EvSelectionStyle style,
5676                     GdkPoint        *start,
5677                     GdkPoint        *stop)
5678 {
5679         GList *list;
5680
5681         if (view->selection_mode == EV_VIEW_SELECTION_RECTANGLE)
5682                 list = compute_new_selection_rect (view, start, stop);
5683         else
5684                 list = compute_new_selection_text (view, style, start, stop);
5685         merge_selection_region (view, list);
5686 }
5687
5688 /* Free's the selection.  It's up to the caller to queue redraws if needed.
5689  */
5690 static void
5691 selection_free (EvViewSelection *selection)
5692 {
5693         if (selection->covered_region)
5694                 cairo_region_destroy (selection->covered_region);
5695         g_free (selection);
5696 }
5697
5698 static void
5699 clear_selection (EvView *view)
5700 {
5701         if (view->selection_info.selections) {
5702                 g_list_foreach (view->selection_info.selections, (GFunc)selection_free, NULL);
5703                 g_list_free (view->selection_info.selections);
5704                 view->selection_info.selections = NULL;
5705
5706                 g_signal_emit (view, signals[SIGNAL_SELECTION_CHANGED], 0, NULL);
5707         }
5708         view->selection_info.in_selection = FALSE;
5709         if (view->pixbuf_cache)
5710                 ev_pixbuf_cache_set_selection_list (view->pixbuf_cache, NULL);
5711 }
5712
5713 void
5714 ev_view_select_all (EvView *view)
5715 {
5716         GList *selections = NULL;
5717         int n_pages, i;
5718
5719         /* Disable selection on rotated pages for the 0.4.0 series */
5720         if (view->rotation != 0)
5721                 return;
5722
5723         clear_selection (view);
5724
5725         n_pages = ev_document_get_n_pages (view->document);
5726         for (i = 0; i < n_pages; i++) {
5727                 gdouble width, height;
5728                 EvViewSelection *selection;
5729
5730                 get_doc_page_size (view, i, &width, &height);
5731
5732                 selection = g_new0 (EvViewSelection, 1);
5733                 selection->page = i;
5734                 selection->style = EV_SELECTION_STYLE_GLYPH;
5735                 selection->rect.x1 = selection->rect.y1 = 0;
5736                 selection->rect.x2 = width;
5737                 selection->rect.y2 = height;
5738
5739                 selections = g_list_append (selections, selection);
5740         }
5741
5742         merge_selection_region (view, selections);
5743         gtk_widget_queue_draw (GTK_WIDGET (view));
5744 }
5745
5746 gboolean
5747 ev_view_get_has_selection (EvView *view)
5748 {
5749         return view->selection_info.selections != NULL;
5750 }
5751
5752 static char *
5753 get_selected_text (EvView *view)
5754 {
5755         GString *text;
5756         GList *l;
5757         gchar *normalized_text;
5758
5759         text = g_string_new (NULL);
5760
5761         ev_document_doc_mutex_lock ();
5762
5763         for (l = view->selection_info.selections; l != NULL; l = l->next) {
5764                 EvViewSelection *selection = (EvViewSelection *)l->data;
5765                 EvPage *page;
5766                 gchar *tmp;
5767
5768                 page = ev_document_get_page (view->document, selection->page);
5769                 tmp = ev_selection_get_selected_text (EV_SELECTION (view->document),
5770                                                       page, selection->style,
5771                                                       &(selection->rect));
5772                 g_object_unref (page);
5773                 g_string_append (text, tmp);
5774                 g_free (tmp);
5775         }
5776
5777         ev_document_doc_mutex_unlock ();
5778
5779         normalized_text = g_utf8_normalize (text->str, text->len, G_NORMALIZE_NFKC);
5780         g_string_free (text, TRUE);
5781         return normalized_text;
5782 }
5783
5784 static void
5785 ev_view_clipboard_copy (EvView      *view,
5786                         const gchar *text)
5787 {
5788         GtkClipboard *clipboard;
5789
5790         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (view),
5791                                               GDK_SELECTION_CLIPBOARD);
5792         gtk_clipboard_set_text (clipboard, text, -1);
5793 }
5794
5795 void
5796 ev_view_copy (EvView *ev_view)
5797 {
5798         char *text;
5799
5800         if (!EV_IS_SELECTION (ev_view->document))
5801                 return;
5802
5803         text = get_selected_text (ev_view);
5804         ev_view_clipboard_copy (ev_view, text);
5805         g_free (text);
5806 }
5807
5808 static void
5809 ev_view_primary_get_cb (GtkClipboard     *clipboard,
5810                         GtkSelectionData *selection_data,
5811                         guint             info,
5812                         gpointer          data)
5813 {
5814         EvView *ev_view = EV_VIEW (data);
5815
5816         if (ev_view->link_selected) {
5817                 gtk_selection_data_set_text (selection_data,
5818                                              ev_link_action_get_uri (ev_view->link_selected),
5819                                              -1);
5820         } else if (EV_IS_SELECTION (ev_view->document) &&
5821                    ev_view->selection_info.selections) {
5822                 gchar *text;
5823
5824                 text = get_selected_text (ev_view);
5825                 if (text) {
5826                         gtk_selection_data_set_text (selection_data, text, -1);
5827                         g_free (text);
5828                 }
5829         }
5830 }
5831
5832 static void
5833 ev_view_primary_clear_cb (GtkClipboard *clipboard,
5834                           gpointer      data)
5835 {
5836         EvView *view = EV_VIEW (data);
5837
5838         clear_selection (view);
5839         clear_link_selected (view);
5840 }
5841
5842 static void
5843 ev_view_update_primary_selection (EvView *ev_view)
5844 {
5845         GtkClipboard *clipboard;
5846
5847         clipboard = gtk_widget_get_clipboard (GTK_WIDGET (ev_view),
5848                                               GDK_SELECTION_PRIMARY);
5849
5850         if (ev_view->selection_info.selections || ev_view->link_selected) {
5851                 GtkTargetList *target_list;
5852                 GtkTargetEntry *targets;
5853                 int n_targets;
5854
5855                 target_list = gtk_target_list_new (NULL, 0);
5856                 gtk_target_list_add_text_targets (target_list, 0);
5857                 targets = gtk_target_table_new_from_list (target_list, &n_targets);
5858                 gtk_target_list_unref (target_list);
5859
5860                 if (!gtk_clipboard_set_with_owner (clipboard,
5861                                                    targets, n_targets,
5862                                                    ev_view_primary_get_cb,
5863                                                    ev_view_primary_clear_cb,
5864                                                    G_OBJECT (ev_view)))
5865                         ev_view_primary_clear_cb (clipboard, ev_view);
5866
5867                 gtk_target_table_free (targets, n_targets);
5868         } else {
5869                 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (ev_view))
5870                         gtk_clipboard_clear (clipboard);
5871         }
5872 }
5873
5874 static void
5875 clear_link_selected (EvView *view)
5876 {
5877         if (view->link_selected) {
5878                 g_object_unref (view->link_selected);
5879                 view->link_selected = NULL;
5880         }
5881 }
5882
5883 void
5884 ev_view_copy_link_address (EvView       *view,
5885                            EvLinkAction *action)
5886 {
5887         clear_link_selected (view);
5888
5889         ev_view_clipboard_copy (view, ev_link_action_get_uri (action));
5890
5891         view->link_selected = g_object_ref (action);
5892         ev_view_update_primary_selection (view);
5893 }
5894
5895 /*** Cursor operations ***/
5896 static void
5897 ev_view_set_cursor (EvView *view, EvViewCursor new_cursor)
5898 {
5899         GdkCursor *cursor = NULL;
5900         GtkWidget *widget;
5901         GdkWindow *bin_window;
5902
5903         if (view->cursor == new_cursor) {
5904                 return;
5905         }
5906
5907         view->cursor = new_cursor;
5908
5909         bin_window = gtk_layout_get_bin_window (GTK_LAYOUT (view));
5910         widget = gtk_widget_get_toplevel (GTK_WIDGET (view));
5911         cursor = ev_view_cursor_new (gtk_widget_get_display (widget), new_cursor);
5912         gdk_window_set_cursor (bin_window, cursor);
5913         gdk_flush ();
5914         if (cursor)
5915                 gdk_cursor_unref (cursor);
5916 }
5917
5918 void
5919 ev_view_hide_cursor (EvView *view)
5920 {
5921        ev_view_set_cursor (view, EV_VIEW_CURSOR_HIDDEN);
5922 }
5923
5924 void
5925 ev_view_show_cursor (EvView *view)
5926 {
5927        ev_view_set_cursor (view, EV_VIEW_CURSOR_NORMAL);
5928 }
5929
5930 gboolean
5931 ev_view_next_page (EvView *view)
5932 {
5933         int page, n_pages;
5934
5935         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5936
5937         if (!view->document)
5938                 return FALSE;
5939
5940         page = ev_document_model_get_page (view->model);
5941         n_pages = ev_document_get_n_pages (view->document);
5942
5943         if (view->dual_page)
5944                 page = page + 2;
5945         else
5946                 page = page + 1;
5947
5948         if (page < n_pages) {
5949                 ev_document_model_set_page (view->model, page);
5950                 return TRUE;
5951         } else if (view->dual_page && page == n_pages) {
5952                 ev_document_model_set_page (view->model, page - 1);
5953                 return TRUE;
5954         } else {
5955                 return FALSE;
5956         }
5957 }
5958
5959 gboolean
5960 ev_view_previous_page (EvView *view)
5961 {
5962         int page;
5963
5964         g_return_val_if_fail (EV_IS_VIEW (view), FALSE);
5965
5966         if (!view->document)
5967                 return FALSE;
5968
5969         page = ev_document_model_get_page (view->model);
5970
5971         if (view->dual_page)
5972                 page = page - 2;
5973         else
5974                 page = page - 1;
5975
5976         if (page >= 0) {
5977                 ev_document_model_set_page (view->model, page);
5978                 return TRUE;
5979         } else if (view->dual_page && page == -1) {
5980                 ev_document_model_set_page (view->model, 0);
5981                 return TRUE;
5982         } else {
5983                 return FALSE;
5984         }
5985 }
5986