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 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
  32 #include "ev-sidebar-thumbnails.h"
  33 #include "ev-document-thumbnails.h"
  34 #include "ev-utils.h"
  35
  36 #define THUMBNAIL_WIDTH 96
  37
  38 struct _EvSidebarThumbnailsPrivate {
  39         GtkWidget *tree_view;
  40         GtkListStore *list_store;
  41         EvDocument *document;
  42
  43         guint idle_id;
  44         gint current_page, n_pages;
  45 };
  46
  47 enum {
  48         COLUMN_PAGE_STRING,
  49         COLUMN_PIXBUF,
  50         NUM_COLUMNS
  51 };
  52
  53 static GtkVBoxClass *parent_class;
  54
  55 G_DEFINE_TYPE (EvSidebarThumbnails, ev_sidebar_thumbnails, GTK_TYPE_VBOX);
  56
  57 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
  58         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
  59
  60 static void
  61 ev_sidebar_thumbnails_destroy (GtkObject *object)
  62 {
  63         EvSidebarThumbnails *ev_sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
  64         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
  65
  66         if (priv->idle_id != 0) {
  67                 g_source_remove (priv->idle_id);
  68
  69                 priv->idle_id = 0;
  70         }
  71
  72         GTK_OBJECT_CLASS (parent_class)->destroy (object);
  73 }
  74
  75 static void
  76 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
  77 {
  78         GObjectClass *g_object_class;
  79         GtkObjectClass *gtk_object_class;
  80
  81         g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
  82         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
  83
  84         parent_class = g_type_class_peek_parent (ev_sidebar_thumbnails_class);
  85
  86         gtk_object_class->destroy = ev_sidebar_thumbnails_destroy;
  87
  88         g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
  89
  90 }
  91
  92 static void
  93 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
  94 {
  95         GtkWidget *swindow;
  96         EvSidebarThumbnailsPrivate *priv;
  97
  98         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
  99
 100         priv->list_store = gtk_list_store_new (NUM_COLUMNS, G_TYPE_STRING, GDK_TYPE_PIXBUF);
 101         priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 102
 103         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 104         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 105                                                      NULL, gtk_cell_renderer_pixbuf_new (),
 106                                                      "pixbuf", 1, NULL);
 107         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 108                                                      NULL, gtk_cell_renderer_text_new (),
 109                                                      "text", 0, NULL);
 110
 111         g_object_unref (priv->list_store);
 112
 113         swindow = gtk_scrolled_window_new (NULL, NULL);
 114         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 115                                         GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 116         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 117                                              GTK_SHADOW_IN);
 118
 119         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 120         gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), swindow, TRUE, TRUE, 0);
 121
 122         gtk_widget_show_all (swindow);
 123 }
 124
 125 GtkWidget *
 126 ev_sidebar_thumbnails_new (void)
 127 {
 128         GtkWidget *ev_sidebar_thumbnails;
 129
 130         ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
 131
 132         return ev_sidebar_thumbnails;
 133 }
 134
 135 static gboolean
 136 populate_thumbnails (gpointer data)
 137 {
 138         EvSidebarThumbnails *ev_sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (data);
 139         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
 140         GdkPixbuf *tmp, *pixbuf;
 141         GtkTreePath *path;
 142         GtkTreeIter iter;
 143
 144         tmp = ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (priv->document),
 145                                                        priv->current_page, THUMBNAIL_WIDTH);
 146
 147
 148         /* Add shadow */
 149         pixbuf = ev_pixbuf_add_shadow (tmp, 5, 0, 0, 0.5);
 150
 151         path = gtk_tree_path_new_from_indices (priv->current_page, -1);
 152         gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 153         gtk_tree_path_free (path);
 154
 155         gtk_list_store_set (priv->list_store, &iter,
 156                             COLUMN_PIXBUF, pixbuf,
 157                             -1);
 158
 159         g_object_unref (tmp);
 160         g_object_unref (pixbuf);
 161
 162         priv->current_page++;
 163
 164         if (priv->current_page == priv->n_pages)
 165                 return FALSE;
 166         else
 167                 return TRUE;
 168 }
 169
 170 void
 171 ev_sidebar_thumbnails_set_document (EvSidebarThumbnails *sidebar_thumbnails,
 172                                     EvDocument          *document)
 173 {
 174         GtkIconTheme *theme;
 175         GdkPixbuf *loading_icon;
 176         gint i, n_pages;
 177         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 178
 179         g_return_if_fail (EV_IS_DOCUMENT_THUMBNAILS (document));
 180
 181         if (priv->idle_id != 0) {
 182                 g_source_remove (priv->idle_id);
 183         }
 184
 185         theme = gtk_icon_theme_get_for_screen (gtk_widget_get_screen (GTK_WIDGET (sidebar_thumbnails)));
 186
 187         loading_icon = gtk_icon_theme_load_icon (theme, "gnome-fs-loading-icon",
 188                                                  THUMBNAIL_WIDTH, 0, NULL);
 189
 190         n_pages = ev_document_get_n_pages (document);
 191
 192         for (i = 0; i < n_pages; i++) {
 193                 GtkTreeIter iter;
 194                 gchar *page;
 195
 196                 page = g_strdup_printf ("Page %d", i + 1);
 197                 gtk_list_store_append (sidebar_thumbnails->priv->list_store,
 198                                        &iter);
 199                 gtk_list_store_set (sidebar_thumbnails->priv->list_store,
 200                                     &iter,
 201                                     COLUMN_PAGE_STRING, page,
 202                                     COLUMN_PIXBUF, loading_icon,
 203                                     -1);
 204                 g_free (page);
 205         }
 206
 207         priv->document = document;
 208         priv->idle_id = g_idle_add (populate_thumbnails, sidebar_thumbnails);
 209         priv->n_pages = n_pages;
 210         priv->current_page = 0;
 211 }
 212