+}
+
+GtkWidget *
+ev_sidebar_thumbnails_new (void)
+{
+ GtkWidget *ev_sidebar_thumbnails;
+
+ ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
+
+ return ev_sidebar_thumbnails;
+}
+
+static void
+clear_range (EvSidebarThumbnails *sidebar_thumbnails,
+ gint start_page,
+ gint end_page)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ GtkTreePath *path;
+ GtkTreeIter iter;
+ gboolean result;
+
+ g_assert (start_page <= end_page);
+
+ path = gtk_tree_path_new_from_indices (start_page, -1);
+ for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
+ result && start_page <= end_page;
+ result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), start_page ++) {
+ EvJobThumbnail *job;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store),
+ &iter,
+ COLUMN_JOB, &job,
+ -1);
+
+ if (job) {
+ g_signal_handlers_disconnect_by_func (job, thumbnail_job_completed_callback, sidebar_thumbnails);
+ ev_job_queue_remove_job (EV_JOB (job));
+ g_object_unref (job);
+ }
+
+ gtk_list_store_set (priv->list_store, &iter,
+ COLUMN_JOB, NULL,
+ COLUMN_THUMBNAIL_SET, FALSE,
+ COLUMN_PIXBUF, priv->loading_icon,
+ -1);
+ }
+ gtk_tree_path_free (path);
+}
+
+static gdouble
+get_scale_for_page (EvSidebarThumbnails *sidebar_thumbnails,
+ gint page)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ gint width, height;
+
+ ev_page_cache_get_size (priv->page_cache,
+ page, 0,
+ 1.0, &width, &height);
+
+ return (gdouble)THUMBNAIL_WIDTH / (gdouble)width;
+}
+
+static void
+add_range (EvSidebarThumbnails *sidebar_thumbnails,
+ gint start_page,
+ gint end_page)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ GtkTreePath *path;
+ GtkTreeIter iter;
+ gboolean result;
+ gint page = start_page;
+
+ g_assert (start_page <= end_page);
+
+ path = gtk_tree_path_new_from_indices (start_page, -1);
+ for (result = gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
+ result && page <= end_page;
+ result = gtk_tree_model_iter_next (GTK_TREE_MODEL (priv->list_store), &iter), page ++) {
+ EvJob *job;
+ gboolean thumbnail_set;
+
+ gtk_tree_model_get (GTK_TREE_MODEL (priv->list_store), &iter,
+ COLUMN_JOB, &job,
+ COLUMN_THUMBNAIL_SET, &thumbnail_set,
+ -1);
+
+ if (job == NULL && !thumbnail_set) {
+ EvRenderContext *rc;
+
+ rc = ev_render_context_new (priv->rotation, page,
+ get_scale_for_page (sidebar_thumbnails, page));
+ job = ev_job_thumbnail_new (priv->document, rc);
+ ev_job_queue_add_job (EV_JOB (job), EV_JOB_PRIORITY_HIGH);
+ g_object_unref (rc);
+
+ g_object_set_data_full (G_OBJECT (job), "tree_iter",
+ gtk_tree_iter_copy (&iter),
+ (GDestroyNotify) gtk_tree_iter_free);
+ g_signal_connect (job, "finished",
+ G_CALLBACK (thumbnail_job_completed_callback),
+ sidebar_thumbnails);
+ gtk_list_store_set (priv->list_store, &iter,
+ COLUMN_JOB, job,
+ -1);
+
+ /* The queue and the list own a ref to the job now */
+ g_object_unref (job);
+ } else if (job) {
+ g_object_unref (job);
+ }
+ }
+ gtk_tree_path_free (path);
+}
+
+/* This modifies start */
+static void
+update_visible_range (EvSidebarThumbnails *sidebar_thumbnails,
+ gint start_page,
+ gint end_page)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ int old_start_page, old_end_page;
+
+ old_start_page = priv->start_page;
+ old_end_page = priv->end_page;
+
+ if (start_page == old_start_page &&
+ end_page == old_end_page)
+ return;
+
+ /* Clear the areas we no longer display */
+ if (old_start_page >= 0 && old_start_page < start_page)
+ clear_range (sidebar_thumbnails, old_start_page, MIN (start_page - 1, old_end_page));
+
+ if (old_end_page > 0 && old_end_page > end_page)
+ clear_range (sidebar_thumbnails, MAX (end_page + 1, old_start_page), old_end_page);
+
+ add_range (sidebar_thumbnails, start_page, end_page);
+
+ priv->start_page = start_page;
+ priv->end_page = end_page;
+}
+
+static void
+adjustment_changed_cb (EvSidebarThumbnails *sidebar_thumbnails)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ GtkTreePath *path = NULL;
+ GtkTreePath *path2 = NULL;
+ gint wy1;
+ gint wy2;
+
+ /* Widget is not currently visible */
+ if (!GTK_WIDGET_MAPPED (sidebar_thumbnails))
+ return;
+
+ if (priv->tree_view) {
+ if (! GTK_WIDGET_REALIZED (priv->tree_view))
+ return;
+
+#if GTK_CHECK_VERSION (2, 11, 3)
+ gtk_tree_view_convert_widget_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
+ 0, (int) priv->vadjustment->value,
+ NULL, &wy1);
+ gtk_tree_view_convert_widget_to_bin_window_coords (GTK_TREE_VIEW (priv->tree_view),
+ 0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
+ NULL, &wy2);
+#else
+ gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
+ 0, (int) priv->vadjustment->value,
+ NULL, &wy1);
+ gtk_tree_view_tree_to_widget_coords (GTK_TREE_VIEW (priv->tree_view),
+ 0, (int) (priv->vadjustment->value + priv->vadjustment->page_size),
+ NULL, &wy2);
+#endif /* GTK_CHECK_VERSION (2, 11, 3) */
+
+ gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
+ 1, wy1 + 1, &path,
+ NULL, NULL, NULL);
+ gtk_tree_view_get_path_at_pos (GTK_TREE_VIEW (priv->tree_view),
+ 1, wy2 -1, &path2,
+ NULL, NULL, NULL);
+ } else if (priv->icon_view) {
+ if (! GTK_WIDGET_REALIZED (priv->icon_view))
+ return;
+ if (! gtk_icon_view_get_visible_range (GTK_ICON_VIEW (priv->icon_view), &path, &path2))
+ return;
+ } else {
+ return;
+ }
+
+ if (path && path2) {
+ update_visible_range (sidebar_thumbnails,
+ gtk_tree_path_get_indices (path)[0],
+ gtk_tree_path_get_indices (path2)[0]);
+ }
+
+ gtk_tree_path_free (path);
+ gtk_tree_path_free (path2);
+}
+
+static void
+ev_sidebar_thumbnails_fill_model (EvSidebarThumbnails *sidebar_thumbnails)
+{
+ EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
+ GtkTreeIter iter;
+ int i;
+
+ for (i = 0; i < sidebar_thumbnails->priv->n_pages; i++) {
+ gchar *page_label;
+ gchar *page_string;
+
+ page_label = ev_page_cache_get_page_label (priv->page_cache, i);
+ page_string = g_markup_printf_escaped ("<i>%s</i>", page_label);
+
+ gtk_list_store_append (priv->list_store, &iter);
+ gtk_list_store_set (priv->list_store, &iter,
+ COLUMN_PAGE_STRING, page_string,
+ COLUMN_PIXBUF, priv->loading_icon,
+ COLUMN_THUMBNAIL_SET, FALSE,
+ -1);
+ g_free (page_label);
+ g_free (page_string);
+ }
+}
+
+
+static void
+ev_sidebar_thumbnails_set_loading_icon (EvSidebarThumbnails *sidebar_thumbnails)
+{
+ if (sidebar_thumbnails->priv->loading_icon)
+ g_object_unref (sidebar_thumbnails->priv->loading_icon);
+
+ if (sidebar_thumbnails->priv->document) {
+ gint width, height;
+
+ /* We get the dimensions of the first page so that we can make a blank
+ * icon. */
+ ev_page_cache_get_thumbnail_size (sidebar_thumbnails->priv->page_cache, 0,
+ sidebar_thumbnails->priv->rotation,
+ &width, &height);
+
+ sidebar_thumbnails->priv->loading_icon =
+ ev_document_misc_get_thumbnail_frame (width, height, NULL);
+ } else {
+ sidebar_thumbnails->priv->loading_icon = NULL;
+ }