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-document-misc.h"
  35 #include "ev-utils.h"
  36
  37 #define THUMBNAIL_WIDTH 75
  38 /* Amount of time we devote to each iteration of the idle, in microseconds */
  39 #define IDLE_WORK_LENGTH 5000
  40
  41 struct _EvSidebarThumbnailsPrivate {
  42         GtkWidget *tree_view;
  43         GtkListStore *list_store;
  44         EvDocument *document;
  45
  46         guint idle_id;
  47         gint current_page, n_pages;
  48 };
  49
  50 enum {
  51         COLUMN_PAGE_STRING,
  52         COLUMN_PIXBUF,
  53         NUM_COLUMNS
  54 };
  55
  56 static GtkVBoxClass *parent_class;
  57
  58 G_DEFINE_TYPE (EvSidebarThumbnails, ev_sidebar_thumbnails, GTK_TYPE_VBOX);
  59
  60 #define EV_SIDEBAR_THUMBNAILS_GET_PRIVATE(object) \
  61         (G_TYPE_INSTANCE_GET_PRIVATE ((object), EV_TYPE_SIDEBAR_THUMBNAILS, EvSidebarThumbnailsPrivate));
  62
  63 static void
  64 ev_sidebar_thumbnails_destroy (GtkObject *object)
  65 {
  66         EvSidebarThumbnails *ev_sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (object);
  67         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
  68
  69         if (priv->idle_id != 0) {
  70                 g_source_remove (priv->idle_id);
  71
  72                 priv->idle_id = 0;
  73         }
  74
  75         GTK_OBJECT_CLASS (parent_class)->destroy (object);
  76 }
  77
  78 static void
  79 ev_sidebar_thumbnails_class_init (EvSidebarThumbnailsClass *ev_sidebar_thumbnails_class)
  80 {
  81         GObjectClass *g_object_class;
  82         GtkObjectClass *gtk_object_class;
  83
  84         g_object_class = G_OBJECT_CLASS (ev_sidebar_thumbnails_class);
  85         gtk_object_class = GTK_OBJECT_CLASS (ev_sidebar_thumbnails_class);
  86
  87         parent_class = g_type_class_peek_parent (ev_sidebar_thumbnails_class);
  88
  89         gtk_object_class->destroy = ev_sidebar_thumbnails_destroy;
  90
  91         g_type_class_add_private (g_object_class, sizeof (EvSidebarThumbnailsPrivate));
  92
  93 }
  94
  95 static void
  96 ev_sidebar_thumbnails_init (EvSidebarThumbnails *ev_sidebar_thumbnails)
  97 {
  98         GtkWidget *swindow;
  99         EvSidebarThumbnailsPrivate *priv;
 100         GtkCellRenderer *renderer;
 101
 102         priv = ev_sidebar_thumbnails->priv = EV_SIDEBAR_THUMBNAILS_GET_PRIVATE (ev_sidebar_thumbnails);
 103
 104         priv->list_store = gtk_list_store_new (NUM_COLUMNS, G_TYPE_STRING, GDK_TYPE_PIXBUF);
 105         priv->tree_view = gtk_tree_view_new_with_model (GTK_TREE_MODEL (priv->list_store));
 106
 107         gtk_tree_view_set_headers_visible (GTK_TREE_VIEW (priv->tree_view), FALSE);
 108         renderer = g_object_new (GTK_TYPE_CELL_RENDERER_PIXBUF,
 109                                  "xpad", 2,
 110                                  "ypad", 2,
 111                                  NULL);
 112         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 113                                                      NULL, renderer,
 114                                                      "pixbuf", 1,
 115                                                      NULL);
 116         gtk_tree_view_insert_column_with_attributes (GTK_TREE_VIEW (priv->tree_view), -1,
 117                                                      NULL, gtk_cell_renderer_text_new (),
 118                                                      "markup", 0, NULL);
 119
 120         g_object_unref (priv->list_store);
 121
 122         swindow = gtk_scrolled_window_new (NULL, NULL);
 123         gtk_scrolled_window_set_policy (GTK_SCROLLED_WINDOW (swindow),
 124                                         GTK_POLICY_NEVER, GTK_POLICY_AUTOMATIC);
 125         gtk_scrolled_window_set_shadow_type (GTK_SCROLLED_WINDOW (swindow),
 126                                              GTK_SHADOW_IN);
 127
 128         gtk_container_add (GTK_CONTAINER (swindow), priv->tree_view);
 129         gtk_box_pack_start (GTK_BOX (ev_sidebar_thumbnails), swindow, TRUE, TRUE, 0);
 130
 131         gtk_widget_show_all (swindow);
 132 }
 133
 134 GtkWidget *
 135 ev_sidebar_thumbnails_new (void)
 136 {
 137         GtkWidget *ev_sidebar_thumbnails;
 138
 139         ev_sidebar_thumbnails = g_object_new (EV_TYPE_SIDEBAR_THUMBNAILS, NULL);
 140
 141         return ev_sidebar_thumbnails;
 142 }
 143
 144 static gboolean
 145 do_one_iteration (EvSidebarThumbnails *ev_sidebar_thumbnails)
 146 {
 147         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
 148         GdkPixbuf *pixbuf;
 149         GtkTreePath *path;
 150         GtkTreeIter iter;
 151
 152         pixbuf = ev_document_thumbnails_get_thumbnail (EV_DOCUMENT_THUMBNAILS (priv->document),
 153                                                        priv->current_page, THUMBNAIL_WIDTH);
 154
 155         path = gtk_tree_path_new_from_indices (priv->current_page, -1);
 156         gtk_tree_model_get_iter (GTK_TREE_MODEL (priv->list_store), &iter, path);
 157         gtk_tree_path_free (path);
 158
 159         gtk_list_store_set (priv->list_store, &iter,
 160                             COLUMN_PIXBUF, pixbuf,
 161                             -1);
 162
 163         g_object_unref (pixbuf);
 164
 165         priv->current_page++;
 166
 167         if (priv->current_page == priv->n_pages)
 168                 return FALSE;
 169         else
 170                 return TRUE;
 171 }
 172
 173 static gboolean
 174 populate_thumbnails_idle (gpointer data)
 175 {
 176         GTimer *timer;
 177         int i;
 178         gdouble time_elapsed = 0;
 179
 180         EvSidebarThumbnails *ev_sidebar_thumbnails = EV_SIDEBAR_THUMBNAILS (data);
 181         EvSidebarThumbnailsPrivate *priv = ev_sidebar_thumbnails->priv;
 182
 183
 184 #if PROFILE_THUMB == 1
 185         static GTimer *total_timer;
 186         static gboolean first_time = TRUE;
 187
 188         if (first_time) {
 189                 total_timer = g_timer_new ();
 190                 first_time = FALSE;
 191                 g_timer_start (total_timer);
 192         }
 193 #endif
 194
 195         if (priv->current_page == priv->n_pages) {
 196                 priv->idle_id = 0;
 197 #if PROFILE_THUMB == 1
 198                 time_elapsed = g_timer_elapsed (total_timer, NULL);
 199                 g_timer_destroy (total_timer);
 200                 g_print ("%d rows done in %f seconds\n",
 201                          gtk_tree_model_iter_n_children (GTK_TREE_MODEL (priv->list_store), NULL),
 202                          time_elapsed);
 203 #endif
 204                 return FALSE;
 205         }
 206
 207         timer = g_timer_new ();
 208         i = 0;
 209         g_timer_start (timer);
 210         while (do_one_iteration (ev_sidebar_thumbnails)) {
 211                 i++;
 212                 time_elapsed = g_timer_elapsed (timer, NULL);
 213                 if (time_elapsed > IDLE_WORK_LENGTH/1000000)
 214                         break;
 215         }
 216         g_timer_destroy (timer);
 217 #if PROFILE_THUMB == 2
 218         g_print ("%d rows done this idle in %f seconds\n", i, time_elapsed);
 219 #endif
 220
 221         return TRUE;
 222 }
 223
 224 void
 225 ev_sidebar_thumbnails_set_document (EvSidebarThumbnails *sidebar_thumbnails,
 226                                     EvDocument          *document)
 227 {
 228         GdkPixbuf *loading_icon;
 229         gint i, n_pages;
 230         GtkTreeIter iter;
 231         gchar *page;
 232         gint width = THUMBNAIL_WIDTH;
 233         gint height = THUMBNAIL_WIDTH;
 234
 235         EvSidebarThumbnailsPrivate *priv = sidebar_thumbnails->priv;
 236
 237         g_return_if_fail (EV_IS_DOCUMENT_THUMBNAILS (document));
 238
 239         if (priv->idle_id != 0) {
 240                 g_source_remove (priv->idle_id);
 241         }
 242         n_pages = ev_document_get_n_pages (document);
 243
 244         priv->document = document;
 245         priv->idle_id = g_idle_add (populate_thumbnails_idle, sidebar_thumbnails);
 246         priv->n_pages = n_pages;
 247         priv->current_page = 0;
 248
 249         /* We get the dimensions of the first doc so that   */
 250         ev_document_thumbnails_get_dimensions (EV_DOCUMENT_THUMBNAILS (priv->document),
 251                                                0, THUMBNAIL_WIDTH, &width, &height);
 252         loading_icon = ev_document_misc_get_thumbnail_frame (width, height, NULL);
 253
 254         for (i = 0; i < n_pages; i++) {
 255                 page = g_strdup_printf ("<i>%d</i>", i + 1);
 256                 gtk_list_store_append (priv->list_store, &iter);
 257                 gtk_list_store_set (priv->list_store, &iter,
 258                                     COLUMN_PAGE_STRING, page,
 259                                     COLUMN_PIXBUF, loading_icon,
 260                                     -1);
 261                 g_free (page);
 262         }
 263
 264 }
 265