shell/ev-sidebar-thumbnails.c

   1 /* this file is part of evince, a gnome document viewer
   2  *
   3  *  Copyright (C) 2004 Red Hat, Inc.
   4  *  Copyright (C) 2004, 2005 Anders Carlsson <andersca@gnome.org>
   5  *
   6  *  Authors:
   7  *    Jonathan Blandford <jrb@alum.mit.edu>
   8  *    Anders Carlsson <andersca@gnome.org>
   9  *
  10  * Evince is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * Evince is distributed in the hope that it will be useful, but
  16  * WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18  * General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
  23  */
  24
  25 #ifdef HAVE_CONFIG_H
  26 #include "config.h"
  27 #endif
  28
  29 #include <string.h>
  30 #include <gtk/gtk.h>
  31 #include <glib/gi18n.h>
  32
  33 #include "ev-sidebar-page.h"
  34 #include "ev-sidebar-thumbnails.h"
  35 #include "ev-document-thumbnails.h"
  36 #include "ev-document-misc.h"
  37 #include "ev-job-queue.h"
  38 #include "ev-window.h"
  39 #include "ev-utils.h"
  40
  41 #define THUMBNAIL_WIDTH 100
  42
  43 /* The IconView doesn't scale nearly as well as the TreeView, so we arbitrarily
  44  * limit its use */
  45 #define MAX_ICON_VIEW_PAGE_COUNT 1500
  46
  47
  48 struct _EvSidebarThumbnailsPrivate {
  49         GtkWidget *swindow;
  50         GtkWidget *icon_view;
  51         GtkWidget *tree_view;
  52         GtkAdjustment *vadjustment;
  53         GtkListStore *list_store;
  54         GdkPixbuf *loading_icon;
  55         EvDocument *document;
  56
  57         gint n_pages, pages_done;
  58
  59         /* Visible pages */
  60         gint start_page, end_page;
  61 };
  62
  63 enum {
  64         COLUMN_PAGE_STRING,
  65         COLUMN_PIXBUF,
  66         COLUMN_THUMBNAIL_SET,
  67         COLUMN_JOB,
  68         NUM_COLUMNS
  69 };
  70
  71 enum {
  72         PROP_0,
  73         PROP_WIDGET,
  74 };
  75
  76 static void         ev_sidebar_thumbnails_clear_model      (EvSidebarThumbnails *sidebar);
  77 static gboolean     ev_sidebar_thumbnails_support_document (EvSidebarPage       *sidebar_page,
  78                                                             EvDocument          *document);
  79 static void         ev_sidebar_thumbnails_page_iface_init  (EvSidebarPageIface  *iface);
  80 static void         ev_sidebar_thumbnails_set_document     (EvSidebarPage       *sidebar_page,
  81                                                             EvDocument          *document);
  82 static const gchar* ev_sidebar_thumbnails_get_label        (EvSidebarPage       *sidebar_page);
  83 static void         thumbnail_job_completed_callback       (EvJobThumbnail      *job,
  84                                                             EvSidebarThumbnails *sidebar_thumbnails);
  85
  86 G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails,
  87                         ev_sidebar_thumbnails,
  88                         GTK_TYPE_VBOX,
  89                         0,
  90                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  91                                                ev_sidebar_thumbnails_page_iface_init))
  92
  93 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
  94         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
  95
  96
  97 static void
  98 ev_sidebar_thumbnails_dispose (GObject *object)
  99 {
 100         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
 101
 102         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 103         g_object_unref (sidebar_thumbnails->priv->loading_icon);
 104         g_object_unref (sidebar_thumbnails->priv->list_store);
 105
 106         G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object);
 107 }
 108
 109 static void
 110 ev_sidebar_thumbnails_get_property (GObject    *object,
 111                                          guint       prop_id,
 112                                          GValue     *value,
 113                                          GParamSpec *pspec)
 114 {
 115         EvSidebarThumbnails *sidebar = EV_SIDEBAR_THUMBNAILS (object);
 116
 117         switch (prop_id)
 118         {
 119         case PROP_WIDGET:
 120                 if (sidebar->priv->tree_view)
 121                         g_value_set_object (value, sidebar->priv->tree_view);
 122                 else
 123                         g_value_set_object (value, sidebar->priv->icon_view);
 124                 break;
 125         default:
 126                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 127                 break;
 128         }
 129 }
 130
 131 static void
 132 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
 133 {
 134         GObjectClass *g_object_class;
 135         GtkObjectClass *gtk_object_class;
 136
 137         g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 138         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 139
 140         g_object_class->dispose = ev_sidebar_thumbnails_dispose;
 141         g_object_class->get_property = ev_sidebar_thumbnails_get_property;
 142
 143         g_object_class_override_property (g_object_class,
 144                                           PROP_WIDGET,
 145                                           "main-widget");
 146
 147         g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
 148 }
 149
 150 GtkWidget *
 151 ev_sidebar_thumbnails_new (void)
 152 {
 153         GtkWidget *ev_sidebar_thumbnails;
 154
 155         ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
 156
 157         return ev_sidebar_thumbnails;
 158 }
 159
 160 static void
 161 clear_range (EvSidebarThumbnails *sidebar_thumbnails,
 162              gint                 start_page,
 163              gint                 end_page)
 164 {
 165         EvSidebarThumbnailsPrivate *priv;
 166         GtkTreePath *path;
 167         GtkTreeIter iter;
 168         gboolean result;
 169
 170         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 171
 172         g_assert (start_page <= end_page);
 173
 174         path = gtk_tree_path_new_from_indices (start_page, -1);
 175         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 176              result && start_page <= end_page;
 177              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
 178                 EvJobThumbnail *job;
 179
 180                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
 181                                     &iter,
 182                                     COLUMN_JOB, &job,
 183                                     -1);
 184
 185                 if (job) {
 186                         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
 187                         ev_job_queue_remove_job (EV_JOB (job));
 188                         g_object_unref (job);
 189                 }
 190
 191                 gtk_list_store_set (priv->list_store, &iter,
 192                                     COLUMN_JOB, NULL,
 193                                     COLUMN_THUMBNAIL_SET, FALSE,
 194                                     COLUMN_PIXBUF, priv->loading_icon,
 195                                     -1);
 196         }
 197         gtk_tree_path_free (path);
 198 }
 199
 200 static void
 201 add_range (EvSidebarThumbnails *sidebar_thumbnails,
 202            gint                 start_page,
 203            gint                 end_page)
 204 {
 205         EvSidebarThumbnailsPrivate *priv;
 206         GtkTreePath *path;
 207         GtkTreeIter iter;
 208         gboolean result;
 209         gint page = start_page;
 210
 211         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 212
 213         g_assert (start_page <= end_page);
 214
 215         path = gtk_tree_path_new_from_indices (start_page, -1);
 216         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 217              result && page <= end_page;
 218              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
 219                 EvJobThumbnail *job;
 220                 gboolean thumbnail_set;
 221
 222                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
 223                                     COLUMN_JOB, &job,
 224                                     COLUMN_THUMBNAIL_SET, &thumbnail_set,
 225                                     -1);
 226
 227                 if (job == NULL && !thumbnail_set) {
 228                         job = (EvJobThumbnail *)ev_job_thumbnail_new (priv->document, page, THUMBNAIL_WIDTH);
 229                         ev_job_queue_add_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
 230                         g_object_set_data_full (G_OBJECT (job), "tree_iter",
 231                                                 gtk_tree_iter_copy (&iter),
 232                                                 (GDestroyNotify) gtk_tree_iter_free);
 233                         g_signal_connect (job, "finished",
 234                                           G_CALLBACK (thumbnail_job_completed_callback),
 235                                           sidebar_thumbnails);
 236                         gtk_list_store_set (priv->list_store, &iter,
 237                                             COLUMN_JOB, job,
 238                                             -1);
 239                         /* The queue and the list own a ref to the job now */
 240                         g_object_unref (job);
 241                 } else if (job) {
 242                         g_object_unref (job);
 243                 }
 244         }
 245         gtk_tree_path_free (path);
 246 }
 247
 248 /* This modifies start */
 249 static void
 250 update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
 251                       gint                 start_page,
 252                       gint                 end_page)
 253 {
 254         EvSidebarThumbnailsPrivate *priv;
 255         int old_start_page, old_end_page;
 256
 257         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 258
 259         old_start_page = priv->start_page;
 260         old_end_page = priv->end_page;
 261
 262         if (start_page == old_start_page &&
 263             end_page == old_end_page)
 264                 return;
 265
 266         /* Clear the areas we no longer display */
 267         if (old_start_page < start_page)
 268                 clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
 269
 270         if (old_end_page > end_page)
 271                 clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
 272
 273         add_range (sidebar_thumbnails, start_page, end_page);
 274
 275         priv->start_page = start_page;
 276         priv->end_page = end_page;
 277 }
 278
 279 static void
 280 adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
 281 {
 282         EvSidebarThumbnailsPrivate *priv;
 283         GtkTreePath *path = NULL;
 284         GtkTreePath *path2 = NULL;
 285         gint wy1;
 286         gint wy2;
 287
 288         priv = sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (sidebar_thumbnails);
 289
 290         if (priv->tree_view) {
 291                 if (! GTK_WIDGET_REALIZED (priv->tree_view))
 292                         return;
 293
 294                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 295                                                      0, (int) priv->vadjustment->value,
 296                                                      NULL, &wy1);
 297                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 298                                                      0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
 299                                                      NULL, &wy2);
 300                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 301                                                1, wy1 + 1, &path,
 302                                                NULL, NULL, NULL);
 303                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 304                                                1, wy2 -1, &path2,
 305                                                NULL, NULL, NULL);
 306         } else if (priv->icon_view) {
 307 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 308                 if (! GTK_WIDGET_REALIZED (priv->icon_view))
 309                         return;
 310                 gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2);
 311 #else
 312                 g_assert_not_reached ();
 313 #endif
 314         } else {
 315                 return;
 316         }
 317
 318         if (path == NULL)
 319                 path = gtk_tree_path_new_first ();
 320         if (path2 == NULL)
 321                 path2 = gtk_tree_path_new_from_indices (priv->n_pages,
 322                                                         -1);
 323         update_visible_range (sidebar_thumbnails,
 324                               gtk_tree_path_get_indices (path)[0],
 325                               gtk_tree_path_get_indices (path2)[0]);
 326
 327         gtk_tree_path_free (path);
 328         gtk_tree_path_free (path2);
 329 }
 330
 331 static void
 332 ev_sidebar_tree_selection_changed (GtkTreeSelection *selection,
 333                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 334 {
 335         EvSidebarThumbnailsPrivate *priv;
 336         EvPageCache *page_cache;
 337         GtkTreePath *path;
 338         GtkTreeIter iter;
 339         int page;
 340
 341         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 342
 343         if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
 344                 return;
 345
 346         path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store),
 347                                         &iter);
 348         page = gtk_tree_path_get_indices (path)[0];
 349         gtk_tree_path_free (path);
 350
 351         page_cache = ev_page_cache_get (priv->document);
 352         ev_page_cache_set_current_page (page_cache, page);
 353 }
 354
 355 static void
 356 ev_sidebar_icon_selection_changed (GtkIconView         *icon_view,
 357                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 358 {
 359         EvSidebarThumbnailsPrivate *priv;
 360         EvPageCache *page_cache;
 361         GtkTreePath *path;
 362         GList *selected;
 363         int page;
 364
 365         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 366
 367         selected = gtk_icon_view_get_selected_items (icon_view);
 368         if (selected == NULL)
 369                 return;
 370
 371         /* We don't handle or expect multiple selection. */
 372         g_assert (selected->next == NULL);
 373
 374         path = selected->data;
 375         page = gtk_tree_path_get_indices (path)[0];
 376
 377         gtk_tree_path_free (path);
 378         g_list_free (selected);
 379
 380         page_cache = ev_page_cache_get (priv->document);
 381         ev_page_cache_set_current_page (page_cache, page);
 382 }
 383
 384 static void
 385 ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 386 {
 387         EvSidebarThumbnailsPrivate *priv;
 388         GtkTreeSelection *selection;
 389         GtkCellRenderer *renderer;
 390
 391         priv = ev_sidebar_thumbnails->priv;
 392         priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 393
 394         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 395         g_signal_connect (selection, "changed",
 396                           G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails);
 397         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 398         renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
 399                                  "xpad", 2,
 400                                  "ypad", 2,
 401                                  NULL);
 402         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 403                                                      NULL, renderer,
 404                                                      "pixbuf", 1,
 405                                                      NULL);
 406         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 407                                                      NULL, gtk_cell_renderer_text_new (),
 408                                                      "markup", 0, NULL);
 409         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view);
 410         gtk_widget_show (priv->tree_view);
 411 }
 412
 413 static void
 414 ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 415 {
 416         EvSidebarThumbnailsPrivate *priv;
 417
 418         priv = ev_sidebar_thumbnails->priv;
 419
 420         priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 421         gtk_icon_view_set_markup_column (GTK_ICON_VIEW (priv->icon_view), 0);
 422         gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (priv->icon_view), 1);
 423         g_signal_connect (priv->icon_view, "selection-changed",
 424                           G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails);
 425
 426         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view);
 427         gtk_widget_show (priv->icon_view);
 428 }
 429
 430 static gboolean
 431 ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails)
 432 {
 433 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 434         EvPageCache *page_cache;
 435
 436         page_cache = ev_page_cache_get (sidebar_thumbnails->priv->document);
 437
 438         if (ev_page_cache_get_n_pages (page_cache) > MAX_ICON_VIEW_PAGE_COUNT)
 439                 return FALSE;
 440         return TRUE;
 441 #else
 442         return FALSE;
 443 #endif
 444 }
 445
 446 static void
 447 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
 448 {
 449         EvSidebarThumbnailsPrivate *priv;
 450
 451         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 452
 453         priv->list_store = gtk_list_store_new (NUM_COLUMNS,
 454                                                G_TYPE_STRING,
 455                                                GDK_TYPE_PIXBUF,
 456                                                G_TYPE_BOOLEAN,
 457                                                EV_TYPE_JOB_THUMBNAIL);
 458
 459         priv->swindow = gtk_scrolled_window_new (NULL, NULL);
 460         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow),
 461                                         GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 462         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow),
 463                                              GTK_SHADOW_IN);
 464         priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow));
 465         g_signal_connect_data (G_OBJECT (priv->vadjustment), "value-changed",
 466                                G_CALLBACK (adjustment_changed_cb),
 467                                ev_sidebar_thumbnails, NULL,
 468                                G_CONNECT_SWAPPED | G_CONNECT_AFTER);
 469         g_signal_connect_swapped (G_OBJECT (priv->swindow), "size-allocate",
 470                                   G_CALLBACK (adjustment_changed_cb),
 471                                   ev_sidebar_thumbnails);
 472         gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0);
 473
 474         /* Put it all together */
 475         gtk_widget_show_all (priv->swindow);
 476 }
 477
 478 static void
 479 page_changed_cb (EvPageCache         *page_cache,
 480                  int                  page,
 481                  EvSidebarThumbnails *sidebar)
 482 {
 483         GtkTreeView *tree_view;
 484         GtkTreePath *path;
 485
 486         path = gtk_tree_path_new_from_indices (page, -1);
 487
 488         if (sidebar->priv->tree_view) {
 489                 tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view);
 490                 gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE);
 491                 gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
 492         } else if (sidebar->priv->icon_view) {
 493                 /* Guard against gtk-2.6 */
 494 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 495                 gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path);
 496                 gtk_icon_view_set_cursor (GTK_ICON_VIEW (sidebar->priv->icon_view), path, NULL, FALSE);
 497 #endif
 498         }
 499
 500         gtk_tree_path_free (path);
 501 }
 502
 503 static void
 504 thumbnail_job_completed_callback (EvJobThumbnail      *job,
 505                                   EvSidebarThumbnails *sidebar_thumbnails)
 506 {
 507         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 508         GtkTreeIter *iter;
 509
 510         iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter");
 511         gtk_list_store_set (priv->list_store,
 512                             iter,
 513                             COLUMN_PIXBUF, job->thumbnail,
 514                             COLUMN_THUMBNAIL_SET, TRUE,
 515                             COLUMN_JOB, NULL,
 516                             -1);
 517 }
 518
 519 static void
 520 ev_sidebar_thumbnails_set_document (EvSidebarPage       *sidebar_page,
 521                                     EvDocument          *document)
 522 {
 523         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page);
 524         gint i, n_pages;
 525         GtkTreeIter iter;
 526         gint width = THUMBNAIL_WIDTH;
 527         gint height = THUMBNAIL_WIDTH;
 528         EvPageCache *page_cache;
 529
 530         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 531
 532         g_return_if_fail (EV_IS_DOCUMENT_THUMBNAILS (document));
 533
 534         page_cache = ev_page_cache_get (document);
 535         n_pages = ev_page_cache_get_n_pages (page_cache);
 536
 537         priv->document = document;
 538         priv->n_pages = n_pages;
 539
 540         /* We get the dimensions of the first doc so that we can make a blank
 541          * icon.  */
 542         ev_document_doc_mutex_lock ();
 543         ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (priv->document),
 544                                                0, THUMBNAIL_WIDTH, &width, &height);
 545         ev_document_doc_mutex_unlock ();
 546
 547         if (priv->loading_icon)
 548                 g_object_unref (priv->loading_icon);
 549         priv->loading_icon = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 550
 551         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 552         for (i = 0; i < n_pages; i++) {
 553                 gchar *page_label;
 554                 gchar *page_string;
 555
 556                 page_label = ev_page_cache_get_page_label (page_cache, i);
 557                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 558
 559                 gtk_list_store_append (priv->list_store, &iter);
 560                 gtk_list_store_set (priv->list_store, &iter,
 561                                     COLUMN_PAGE_STRING, page_string,
 562                                     COLUMN_PIXBUF, priv->loading_icon,
 563                                     COLUMN_THUMBNAIL_SET, FALSE,
 564                                     -1);
 565                 g_free (page_label);
 566                 g_free (page_string);
 567         }
 568
 569
 570         /* Create the view widget, and remove the old one, if needed */
 571         if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) {
 572                 if (priv->tree_view) {
 573                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view);
 574                         priv->tree_view = NULL;
 575                 }
 576
 577                 if (! priv->icon_view) {
 578                         ev_sidebar_init_icon_view (sidebar_thumbnails);
 579                         g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
 580                 }
 581         } else {
 582                 if (priv->icon_view) {
 583                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view);
 584                         priv->icon_view = NULL;
 585                 }
 586
 587                 if (! priv->tree_view) {
 588                         ev_sidebar_init_tree_view (sidebar_thumbnails);
 589                         g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
 590                 }
 591         }
 592
 593         /* Connect to the signal and trigger a fake callback */
 594         g_signal_connect (page_cache, "page-changed", G_CALLBACK (page_changed_cb), sidebar_thumbnails);
 595         adjustment_changed_cb (sidebar_thumbnails);
 596 }
 597
 598 static gboolean
 599 ev_sidebar_thumbnails_clear_job (GtkTreeModel *model,
 600                                  GtkTreePath *path,
 601                                  GtkTreeIter *iter,
 602                                  gpointer data)
 603 {
 604     EvJob *job;
 605
 606     gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1);
 607
 608     if (job != NULL) {
 609         ev_job_queue_remove_job (job);
 610         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data);
 611         g_object_unref (job);
 612     }
 613
 614     return FALSE;
 615 }
 616
 617 static void
 618 ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails)
 619 {
 620     EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 621
 622     gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails);
 623     gtk_list_store_clear (priv->list_store);
 624 }
 625
 626 static gboolean
 627 ev_sidebar_thumbnails_support_document (EvSidebarPage   *sidebar_page,
 628                                         EvDocument *document)
 629 {
 630         return (EV_IS_DOCUMENT_THUMBNAILS (document) &&
 631                     (ev_document_get_n_pages (document) > 1));
 632 }
 633
 634 static const gchar*
 635 ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page)
 636 {
 637     return _("Thumbnails");
 638 }
 639
 640 static void
 641 ev_sidebar_thumbnails_page_iface_init (EvSidebarPageIface *iface)
 642 {
 643         iface->support_document = ev_sidebar_thumbnails_support_document;
 644         iface->set_document = ev_sidebar_thumbnails_set_document;
 645         iface->get_label = ev_sidebar_thumbnails_get_label;
 646 }
 647