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         EvPageCache *page_cache;
  57
  58         gint n_pages, pages_done;
  59
  60         int rotation;
  61
  62         /* Visible pages */
  63         gint start_page, end_page;
  64 };
  65
  66 enum {
  67         COLUMN_PAGE_STRING,
  68         COLUMN_PIXBUF,
  69         COLUMN_THUMBNAIL_SET,
  70         COLUMN_JOB,
  71         NUM_COLUMNS
  72 };
  73
  74 enum {
  75         PROP_0,
  76         PROP_WIDGET,
  77 };
  78
  79 static void         ev_sidebar_thumbnails_clear_model      (EvSidebarThumbnails *sidebar);
  80 static gboolean     ev_sidebar_thumbnails_support_document (EvSidebarPage       *sidebar_page,
  81                                                             EvDocument          *document);
  82 static void         ev_sidebar_thumbnails_page_iface_init  (EvSidebarPageIface  *iface);
  83 static void         ev_sidebar_thumbnails_set_document     (EvSidebarPage       *sidebar_page,
  84                                                             EvDocument          *document);
  85 static const gchar* ev_sidebar_thumbnails_get_label        (EvSidebarPage       *sidebar_page);
  86 static void         thumbnail_job_completed_callback       (EvJobThumbnail      *job,
  87                                                             EvSidebarThumbnails *sidebar_thumbnails);
  88
  89 G_DEFINE_TYPE_EXTENDED (EvSidebarThumbnails,
  90                         ev_sidebar_thumbnails,
  91                         GTK_TYPE_VBOX,
  92                         0,
  93                         G_IMPLEMENT_INTERFACE (EV_TYPE_SIDEBAR_PAGE,
  94                                                ev_sidebar_thumbnails_page_iface_init))
  95
  96 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
  97         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
  98
  99
 100 static void
 101 ev_sidebar_thumbnails_dispose (GObject *object)
 102 {
 103         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
 104
 105         if (sidebar_thumbnails->priv->loading_icon) {
 106                 g_object_unref (sidebar_thumbnails->priv->loading_icon);
 107                 sidebar_thumbnails->priv->loading_icon = NULL;
 108         }
 109
 110         if (sidebar_thumbnails->priv->list_store) {
 111                 ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 112                 g_object_unref (sidebar_thumbnails->priv->list_store);
 113                 sidebar_thumbnails->priv->list_store = NULL;
 114         }
 115
 116         G_OBJECT_CLASS (ev_sidebar_thumbnails_parent_class)->dispose (object);
 117 }
 118
 119 static void
 120 ev_sidebar_thumbnails_get_property (GObject    *object,
 121                                     guint       prop_id,
 122                                     GValue     *value,
 123                                     GParamSpec *pspec)
 124 {
 125         EvSidebarThumbnails *sidebar = EV_SIDEBAR_THUMBNAILS (object);
 126
 127         switch (prop_id)
 128         {
 129         case PROP_WIDGET:
 130                 if (sidebar->priv->tree_view)
 131                         g_value_set_object (value, sidebar->priv->tree_view);
 132                 else
 133                         g_value_set_object (value, sidebar->priv->icon_view);
 134                 break;
 135         default:
 136                 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
 137                 break;
 138         }
 139 }
 140
 141 static void
 142 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
 143 {
 144         GObjectClass *g_object_class;
 145         GtkObjectClass *gtk_object_class;
 146
 147         g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 148         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
 149
 150         g_object_class->dispose = ev_sidebar_thumbnails_dispose;
 151         g_object_class->get_property = ev_sidebar_thumbnails_get_property;
 152
 153         g_object_class_override_property (g_object_class,
 154                                           PROP_WIDGET,
 155                                           "main-widget");
 156
 157         g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
 158 }
 159
 160 GtkWidget *
 161 ev_sidebar_thumbnails_new (void)
 162 {
 163         GtkWidget *ev_sidebar_thumbnails;
 164
 165         ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
 166
 167         return ev_sidebar_thumbnails;
 168 }
 169
 170 static void
 171 clear_range (EvSidebarThumbnails *sidebar_thumbnails,
 172              gint                 start_page,
 173              gint                 end_page)
 174 {
 175         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 176         GtkTreePath *path;
 177         GtkTreeIter iter;
 178         gboolean result;
 179
 180         g_assert (start_page <= end_page);
 181
 182         path = gtk_tree_path_new_from_indices (start_page, -1);
 183         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 184              result && start_page <= end_page;
 185              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
 186                 EvJobThumbnail *job;
 187
 188                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
 189                                     &iter,
 190                                     COLUMN_JOB, &job,
 191                                     -1);
 192
 193                 if (job) {
 194                         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
 195                         ev_job_queue_remove_job (EV_JOB (job));
 196                         g_object_unref (job);
 197                 }
 198
 199                 gtk_list_store_set (priv->list_store, &iter,
 200                                     COLUMN_JOB, NULL,
 201                                     COLUMN_THUMBNAIL_SET, FALSE,
 202                                     COLUMN_PIXBUF, priv->loading_icon,
 203                                     -1);
 204         }
 205         gtk_tree_path_free (path);
 206 }
 207
 208 static void
 209 add_range (EvSidebarThumbnails *sidebar_thumbnails,
 210            gint                 start_page,
 211            gint                 end_page)
 212 {
 213         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 214         GtkTreePath *path;
 215         GtkTreeIter iter;
 216         gboolean result;
 217         gint page = start_page;
 218
 219         g_assert (start_page <= end_page);
 220
 221         path = gtk_tree_path_new_from_indices (start_page, -1);
 222         for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 223              result && page <= end_page;
 224              result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
 225                 EvJobThumbnail *job;
 226                 gboolean thumbnail_set;
 227
 228                 gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
 229                                     COLUMN_JOB, &job,
 230                                     COLUMN_THUMBNAIL_SET, &thumbnail_set,
 231                                     -1);
 232
 233                 if (job == NULL && !thumbnail_set) {
 234                         /* FIXME: Need rotation */
 235                         job = (EvJobThumbnail *)ev_job_thumbnail_new (priv->document, page, priv->rotation, THUMBNAIL_WIDTH);
 236                         ev_job_queue_add_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
 237                         g_object_set_data_full (G_OBJECT (job), "tree_iter",
 238                                                 gtk_tree_iter_copy (&iter),
 239                                                 (GDestroyNotify) gtk_tree_iter_free);
 240                         g_signal_connect (job, "finished",
 241                                           G_CALLBACK (thumbnail_job_completed_callback),
 242                                           sidebar_thumbnails);
 243                         gtk_list_store_set (priv->list_store, &iter,
 244                                             COLUMN_JOB, job,
 245                                             -1);
 246                         /* The queue and the list own a ref to the job now */
 247                         g_object_unref (job);
 248                 } else if (job) {
 249                         g_object_unref (job);
 250                 }
 251         }
 252         gtk_tree_path_free (path);
 253 }
 254
 255 /* This modifies start */
 256 static void
 257 update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
 258                       gint                 start_page,
 259                       gint                 end_page)
 260 {
 261         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 262         int old_start_page, old_end_page;
 263
 264         old_start_page = priv->start_page;
 265         old_end_page = priv->end_page;
 266
 267         if (start_page == old_start_page &&
 268             end_page == old_end_page)
 269                 return;
 270
 271         /* Clear the areas we no longer display */
 272         if (old_start_page < start_page)
 273                 clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
 274
 275         if (old_end_page > end_page)
 276                 clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
 277
 278         add_range (sidebar_thumbnails, start_page, end_page);
 279
 280         priv->start_page = start_page;
 281         priv->end_page = end_page;
 282 }
 283
 284 static void
 285 adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
 286 {
 287         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 288         GtkTreePath *path = NULL;
 289         GtkTreePath *path2 = NULL;
 290         gint wy1;
 291         gint wy2;
 292
 293         if (priv->tree_view) {
 294                 if (! GTK_WIDGET_REALIZED (priv->tree_view))
 295                         return;
 296
 297                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 298                                                      0, (int) priv->vadjustment->value,
 299                                                      NULL, &wy1);
 300                 gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
 301                                                      0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
 302                                                      NULL, &wy2);
 303                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 304                                                1, wy1 + 1, &path,
 305                                                NULL, NULL, NULL);
 306                 gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
 307                                                1, wy2 -1, &path2,
 308                                                NULL, NULL, NULL);
 309         } else if (priv->icon_view) {
 310 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 311                 if (! GTK_WIDGET_REALIZED (priv->icon_view))
 312                         return;
 313                 if (! gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2))
 314                         return;
 315 #else
 316                 g_assert_not_reached ();
 317 #endif
 318         } else {
 319                 return;
 320         }
 321
 322         if (path == NULL)
 323                 path = gtk_tree_path_new_first ();
 324         if (path2 == NULL)
 325                 path2 = gtk_tree_path_new_from_indices (priv->n_pages,
 326                                                         -1);
 327         update_visible_range (sidebar_thumbnails,
 328                               gtk_tree_path_get_indices (path)[0],
 329                               gtk_tree_path_get_indices (path2)[0]);
 330
 331         gtk_tree_path_free (path);
 332         gtk_tree_path_free (path2);
 333 }
 334
 335 static void
 336 ev_sidebar_thumbnails_fill_model (EvSidebarThumbnails *sidebar_thumbnails)
 337 {
 338         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 339         GtkTreeIter iter;
 340         int i;
 341
 342         for (i = 0; i < sidebar_thumbnails->priv->n_pages; i++) {
 343                 gchar *page_label;
 344                 gchar *page_string;
 345
 346                 page_label = ev_page_cache_get_page_label (priv->page_cache, i);
 347                 page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
 348
 349                 gtk_list_store_append (priv->list_store, &iter);
 350                 gtk_list_store_set (priv->list_store, &iter,
 351                                     COLUMN_PAGE_STRING, page_string,
 352                                     COLUMN_PIXBUF, priv->loading_icon,
 353                                     COLUMN_THUMBNAIL_SET, FALSE,
 354                                     -1);
 355                 g_free (page_label);
 356                 g_free (page_string);
 357         }
 358 }
 359
 360
 361 static void
 362 ev_sidebar_thumbnails_set_loading_icon (EvSidebarThumbnails *sidebar_thumbnails)
 363 {
 364         gint width = THUMBNAIL_WIDTH;
 365         gint height = THUMBNAIL_WIDTH;
 366
 367         if (sidebar_thumbnails->priv->loading_icon)
 368                 g_object_unref (sidebar_thumbnails->priv->loading_icon);
 369
 370         if (sidebar_thumbnails->priv->document) {
 371                 /* We get the dimensions of the first doc so that we can make a blank
 372                  * icon.  */
 373                 ev_document_doc_mutex_lock ();
 374                 ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (sidebar_thumbnails->priv->document),
 375                                                        0, THUMBNAIL_WIDTH, &width, &height);
 376                 ev_document_doc_mutex_unlock ();
 377                 sidebar_thumbnails->priv->loading_icon =
 378                         ev_document_misc_get_thumbnail_frame (width, height, sidebar_thumbnails->priv->rotation, NULL);
 379         } else {
 380                 sidebar_thumbnails->priv->loading_icon = NULL;
 381         }
 382
 383 }
 384 void
 385 ev_sidebar_thumbnails_refresh (EvSidebarThumbnails *sidebar_thumbnails,
 386
 387                                int                  rotation)
 388 {
 389         sidebar_thumbnails->priv->rotation = rotation;
 390         ev_sidebar_thumbnails_set_loading_icon (sidebar_thumbnails);
 391
 392         if (sidebar_thumbnails->priv->document == NULL)
 393                 return;
 394
 395         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 396         ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
 397
 398         /* Trigger a redraw */
 399         sidebar_thumbnails->priv->start_page = 0;
 400         sidebar_thumbnails->priv->end_page = 0;
 401         adjustment_changed_cb (sidebar_thumbnails);
 402 }
 403
 404 static void
 405 ev_sidebar_tree_selection_changed (GtkTreeSelection *selection,
 406                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 407 {
 408         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
 409         GtkTreePath *path;
 410         GtkTreeIter iter;
 411         int page;
 412
 413         if (!gtk_tree_selection_get_selected (selection, NULL, &iter))
 414                 return;
 415
 416         path = gtk_tree_model_get_path (GTK_TREE_MODEL (priv->list_store),
 417                                         &iter);
 418         page = gtk_tree_path_get_indices (path)[0];
 419         gtk_tree_path_free (path);
 420
 421         ev_page_cache_set_current_page (priv->page_cache, page);
 422 }
 423
 424 static void
 425 ev_sidebar_icon_selection_changed (GtkIconView         *icon_view,
 426                                    EvSidebarThumbnails *ev_sidebar_thumbnails)
 427 {
 428         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
 429         GtkTreePath *path;
 430         GList *selected;
 431         int page;
 432
 433         selected = gtk_icon_view_get_selected_items (icon_view);
 434         if (selected == NULL)
 435                 return;
 436
 437         /* We don't handle or expect multiple selection. */
 438         g_assert (selected->next == NULL);
 439
 440         path = selected->data;
 441         page = gtk_tree_path_get_indices (path)[0];
 442
 443         gtk_tree_path_free (path);
 444         g_list_free (selected);
 445
 446         ev_page_cache_set_current_page (priv->page_cache, page);
 447 }
 448
 449 static void
 450 ev_sidebar_init_tree_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 451 {
 452         EvSidebarThumbnailsPrivate *priv;
 453         GtkTreeSelection *selection;
 454         GtkCellRenderer *renderer;
 455
 456         priv = ev_sidebar_thumbnails->priv;
 457         priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 458
 459         selection = gtk_tree_view_get_selection (GTK_TREE_VIEW (priv->tree_view));
 460         g_signal_connect (selection, "changed",
 461                           G_CALLBACK (ev_sidebar_tree_selection_changed), ev_sidebar_thumbnails);
 462         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 463         renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
 464                                  "xpad", 2,
 465                                  "ypad", 2,
 466                                  NULL);
 467         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 468                                                      NULL, renderer,
 469                                                      "pixbuf", 1,
 470                                                      NULL);
 471         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 472                                                      NULL, gtk_cell_renderer_text_new (),
 473                                                      "markup", 0, NULL);
 474         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->tree_view);
 475         gtk_widget_show (priv->tree_view);
 476 }
 477
 478 static void
 479 ev_sidebar_init_icon_view (EvSidebarThumbnails *ev_sidebar_thumbnails)
 480 {
 481         EvSidebarThumbnailsPrivate *priv;
 482
 483         priv = ev_sidebar_thumbnails->priv;
 484
 485         priv->icon_view = gtk_icon_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 486         gtk_icon_view_set_markup_column (GTK_ICON_VIEW (priv->icon_view), 0);
 487         gtk_icon_view_set_pixbuf_column (GTK_ICON_VIEW (priv->icon_view), 1);
 488         g_signal_connect (priv->icon_view, "selection-changed",
 489                           G_CALLBACK (ev_sidebar_icon_selection_changed), ev_sidebar_thumbnails);
 490
 491         gtk_container_add (GTK_CONTAINER (priv->swindow), priv->icon_view);
 492         gtk_widget_show (priv->icon_view);
 493 }
 494
 495 static gboolean
 496 ev_sidebar_thumbnails_use_icon_view (EvSidebarThumbnails *sidebar_thumbnails)
 497 {
 498 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 499         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 500         if (ev_page_cache_get_n_pages (priv->page_cache) > MAX_ICON_VIEW_PAGE_COUNT)
 501                 return FALSE;
 502         return TRUE;
 503 #else
 504         return FALSE;
 505 #endif
 506 }
 507
 508 static void
 509 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
 510 {
 511         EvSidebarThumbnailsPrivate *priv;
 512
 513         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 514
 515         priv->list_store = gtk_list_store_new (NUM_COLUMNS,
 516                                                G_TYPE_STRING,
 517                                                GDK_TYPE_PIXBUF,
 518                                                G_TYPE_BOOLEAN,
 519                                                EV_TYPE_JOB_THUMBNAIL);
 520
 521         priv->swindow = gtk_scrolled_window_new (NULL, NULL);
 522         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (priv->swindow),
 523                                         GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 524         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (priv->swindow),
 525                                              GTK_SHADOW_IN);
 526         priv->vadjustment = gtk_scrolled_window_get_vadjustment (GTK_SCROLLED_WINDOW (priv->swindow));
 527         g_signal_connect_data (G_OBJECT (priv->vadjustment), "value-changed",
 528                                G_CALLBACK (adjustment_changed_cb),
 529                                ev_sidebar_thumbnails, NULL,
 530                                G_CONNECT_SWAPPED | G_CONNECT_AFTER);
 531         g_signal_connect_swapped (G_OBJECT (priv->swindow), "size-allocate",
 532                                   G_CALLBACK (adjustment_changed_cb),
 533                                   ev_sidebar_thumbnails);
 534         gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), priv->swindow, TRUE, TRUE, 0);
 535
 536         /* Put it all together */
 537         gtk_widget_show_all (priv->swindow);
 538 }
 539
 540 static void
 541 page_changed_cb (EvPageCache         *page_cache,
 542                  int                  page,
 543                  EvSidebarThumbnails *sidebar)
 544 {
 545         GtkTreeView *tree_view;
 546         GtkTreePath *path;
 547
 548         path = gtk_tree_path_new_from_indices (page, -1);
 549
 550         if (sidebar->priv->tree_view) {
 551                 tree_view = GTK_TREE_VIEW (sidebar->priv->tree_view);
 552                 gtk_tree_view_set_cursor (tree_view, path, NULL, FALSE);
 553                 gtk_tree_view_scroll_to_cell (tree_view, path, NULL, FALSE, 0.0, 0.0);
 554         } else if (sidebar->priv->icon_view) {
 555                 /* Guard against gtk-2.6 */
 556 #ifdef HAVE_GTK_ICON_VIEW_GET_VISIBLE_RANGE
 557                 gtk_icon_view_select_path (GTK_ICON_VIEW (sidebar->priv->icon_view), path);
 558                 gtk_icon_view_set_cursor (GTK_ICON_VIEW (sidebar->priv->icon_view), path, NULL, FALSE);
 559 #endif
 560         }
 561
 562         gtk_tree_path_free (path);
 563 }
 564
 565 static void
 566 thumbnail_job_completed_callback (EvJobThumbnail      *job,
 567                                   EvSidebarThumbnails *sidebar_thumbnails)
 568 {
 569         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 570         GtkTreeIter *iter;
 571
 572         iter = (GtkTreeIter *) g_object_get_data (G_OBJECT (job), "tree_iter");
 573         gtk_list_store_set (priv->list_store,
 574                             iter,
 575                             COLUMN_PIXBUF, job->thumbnail,
 576                             COLUMN_THUMBNAIL_SET, TRUE,
 577                             COLUMN_JOB, NULL,
 578                             -1);
 579 }
 580
 581 static void
 582 ev_sidebar_thumbnails_set_document (EvSidebarPage       *sidebar_page,
 583                                     EvDocument          *document)
 584 {
 585         EvSidebarThumbnails *sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (sidebar_page);
 586
 587         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 588
 589         g_return_if_fail (EV_IS_DOCUMENT_THUMBNAILS (document));
 590
 591         priv->page_cache = ev_page_cache_get (document);
 592         priv->document = document;
 593         priv->n_pages = ev_page_cache_get_n_pages (priv->page_cache);
 594
 595         ev_sidebar_thumbnails_set_loading_icon (sidebar_thumbnails);
 596
 597         ev_sidebar_thumbnails_clear_model (sidebar_thumbnails);
 598         ev_sidebar_thumbnails_fill_model (sidebar_thumbnails);
 599
 600         /* Create the view widget, and remove the old one, if needed */
 601         if (ev_sidebar_thumbnails_use_icon_view (sidebar_thumbnails)) {
 602                 if (priv->tree_view) {
 603                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->tree_view);
 604                         priv->tree_view = NULL;
 605                 }
 606
 607                 if (! priv->icon_view) {
 608                         ev_sidebar_init_icon_view (sidebar_thumbnails);
 609                         g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
 610                 }
 611         } else {
 612                 if (priv->icon_view) {
 613                         gtk_container_remove (GTK_CONTAINER (priv->swindow), priv->icon_view);
 614                         priv->icon_view = NULL;
 615                 }
 616
 617                 if (! priv->tree_view) {
 618                         ev_sidebar_init_tree_view (sidebar_thumbnails);
 619                         g_object_notify (G_OBJECT (sidebar_thumbnails), "main_widget");
 620                 }
 621         }
 622
 623         /* Connect to the signal and trigger a fake callback */
 624         g_signal_connect (priv->page_cache, "page-changed", G_CALLBACK (page_changed_cb), sidebar_thumbnails);
 625         sidebar_thumbnails->priv->start_page = 0;
 626         sidebar_thumbnails->priv->end_page = 0;
 627         adjustment_changed_cb (sidebar_thumbnails);
 628 }
 629
 630 static gboolean
 631 ev_sidebar_thumbnails_clear_job (GtkTreeModel *model,
 632                                  GtkTreePath *path,
 633                                  GtkTreeIter *iter,
 634                                  gpointer data)
 635 {
 636     EvJob *job;
 637
 638     gtk_tree_model_get (model, iter, COLUMN_JOB, &job, -1);
 639
 640     if (job != NULL) {
 641         ev_job_queue_remove_job (job);
 642         g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, data);
 643         g_object_unref (job);
 644     }
 645
 646     return FALSE;
 647 }
 648
 649 static void
 650 ev_sidebar_thumbnails_clear_model (EvSidebarThumbnails *sidebar_thumbnails)
 651 {
 652     EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 653
 654     gtk_tree_model_foreach (GTK_TREE_MODEL (priv->list_store), ev_sidebar_thumbnails_clear_job, sidebar_thumbnails);
 655     gtk_list_store_clear (priv->list_store);
 656 }
 657
 658 static gboolean
 659 ev_sidebar_thumbnails_support_document (EvSidebarPage   *sidebar_page,
 660                                         EvDocument *document)
 661 {
 662         return (EV_IS_DOCUMENT_THUMBNAILS (document) &&
 663                     (ev_document_get_n_pages (document) > 1));
 664 }
 665
 666 static const gchar*
 667 ev_sidebar_thumbnails_get_label (EvSidebarPage *sidebar_page)
 668 {
 669     return _("Thumbnails");
 670 }
 671
 672 static void
 673 ev_sidebar_thumbnails_page_iface_init (EvSidebarPageIface *iface)
 674 {
 675         iface->support_document = ev_sidebar_thumbnails_support_document;
 676         iface->set_document = ev_sidebar_thumbnails_set_document;
 677         iface->get_label = ev_sidebar_thumbnails_get_label;
 678 }
 679