Use cairo image surfaces instead of GDK pixbufs for drawing pages and

[evince.git] / shell / ev-page-cache.c

diff --git a/shell/ev-page-cache.c b/shell/ev-page-cache.c
index 3dd8c9a7f1c1c9c29174d0f0079f452a35938b89..ebf0de7f9b69f8d2409e51d69f75dabb0438d4aa 100644 (file)
--- a/shell/ev-page-cache.c
+++ b/shell/ev-page-cache.c
@@ -45,11 +45,13 @@ struct _EvPageCacheClass
        GObjectClass parent_class;
 
        void (* page_changed) (EvPageCache *page_cache, gint page);
+       void (* history_changed) (EvPageCache *page_cache, gint page);
 };
 
 enum
 {
        PAGE_CHANGED,
+       HISTORY_CHANGED,
        N_SIGNALS,
 };
 
@@ -87,6 +89,16 @@ ev_page_cache_class_init (EvPageCacheClass *class)
                              G_TYPE_NONE, 1,
                              G_TYPE_INT);
 
+       signals [HISTORY_CHANGED] =
+               g_signal_new ("history-changed",
+                             EV_TYPE_PAGE_CACHE,
+                             G_SIGNAL_RUN_LAST,
+                             G_STRUCT_OFFSET (EvPageCacheClass, history_changed),
+                             NULL, NULL,
+                             g_cclosure_marshal_VOID__INT,
+                             G_TYPE_NONE, 1,
+                             G_TYPE_INT);
+
 }
 
 static void
@@ -96,12 +108,43 @@ ev_page_cache_finalize (GObject *object)
 
        page_cache = EV_PAGE_CACHE (object);
 
-       g_free (page_cache->title);
-       g_free (page_cache->size_cache);
-       g_free (page_cache->height_to_page);
-       g_free (page_cache->dual_height_to_page);
+       if (page_cache->title) {
+               g_free (page_cache->title);
+               page_cache->title = NULL;
+       }
+
+       if (page_cache->size_cache) {
+               g_free (page_cache->size_cache);
+               page_cache->size_cache = NULL;
+       }
+
+       if (page_cache->height_to_page) {
+               g_free (page_cache->height_to_page);
+               page_cache->height_to_page = NULL;
+       }
+
+       if (page_cache->dual_height_to_page) {
+               g_free (page_cache->dual_height_to_page);
+               page_cache->dual_height_to_page = NULL;
+       }
+
+       if (page_cache->page_labels) {
+               gint i;
+
+               for (i = 0; i < page_cache->n_pages; i++) {
+                       if (page_cache->page_labels[i])
+                               g_free (page_cache->page_labels[i]);
+               }
+               g_free (page_cache->page_labels);
+               page_cache->page_labels = NULL;
+       }
 
-       ev_document_info_free (page_cache->page_info);
+       if (page_cache->page_info) {
+               ev_document_info_free (page_cache->page_info);
+               page_cache->page_info = NULL;
+       }
+
+       G_OBJECT_CLASS (ev_page_cache_parent_class)->finalize (object);
 }
 
 static void
@@ -323,6 +366,16 @@ ev_page_cache_set_current_page (EvPageCache *page_cache,
        g_signal_emit (page_cache, signals[PAGE_CHANGED], 0, page);
 }
 
+void
+ev_page_cache_set_current_page_history (EvPageCache *page_cache,
+                                       int          page)
+{
+       if (abs (page - page_cache->current_page) > 1)
+               g_signal_emit (page_cache, signals [HISTORY_CHANGED], 0, page);
+       
+       ev_page_cache_set_current_page (page_cache, page);
+}
+
 gboolean
 ev_page_cache_set_page_label (EvPageCache *page_cache,
                              const char  *page_label)
@@ -352,8 +405,7 @@ ev_page_cache_set_page_label (EvPageCache *page_cache,
                /* convert from a page label to a page offset */
                page --;
                if (page >= 0 &&
-                   page < page_cache->n_pages &&
-                   page_cache->page_labels[page] == NULL) {
+                   page < page_cache->n_pages) {
                        ev_page_cache_set_current_page (page_cache, page);
                        return TRUE;
                }