Add rudimentary caching for buddy list emblems. This avoids all the icons being duplicated in memory and constantly loaded. A more complete solution would be preferable, but I think this is better than nothing.

Tue, 04 Dec 2007 05:15:49 +0000

author
Daniel Atallah <datallah@pidgin.im>
date
Tue, 04 Dec 2007 05:15:49 +0000
changeset 21876
35db2a7af5f4
parent 21875
d21cfed2af93
child 21877
32d244dd5e84
child 21878
42f7a8d1da74

Add rudimentary caching for buddy list emblems. This avoids all the icons being duplicated in memory and constantly loaded. A more complete solution would be preferable, but I think this is better than nothing.

pidgin/gtkblist.c file | annotate | diff | comparison | revisions
--- a/pidgin/gtkblist.c	Tue Dec 04 05:03:49 2007 +0000
+++ b/pidgin/gtkblist.c	Tue Dec 04 05:15:49 2007 +0000
@@ -3371,6 +3371,34 @@
 	return g_string_free(str, FALSE);
 }
 
+static GHashTable *cached_emblems;
+
+static void _cleanup_cached_emblem(gpointer data, GObject *obj) {
+	g_hash_table_remove(cached_emblems, data);
+}
+
+static GdkPixbuf * _pidgin_blist_get_cached_emblem(gchar *path) {
+	GdkPixbuf *pb = g_hash_table_lookup(cached_emblems, path);
+
+	if (pb != NULL) {
+		/* The caller gets a reference */
+		g_object_ref(pb);
+		g_free(path);
+	} else {
+		pb = gdk_pixbuf_new_from_file(path, NULL);
+		if (pb != NULL) {
+			/* We don't want to own a ref to the pixbuf, but we need to keep clean up. */
+			/* I'm not sure if it would be better to just keep our ref and not let the emblem ever be destroyed */
+			g_object_weak_ref(G_OBJECT(pb), _cleanup_cached_emblem, path);
+			g_hash_table_insert(cached_emblems, path, pb);
+		} else
+			g_free(path);
+	}
+
+	return pb;
+}
+
+
 GdkPixbuf *
 pidgin_blist_get_emblem(PurpleBlistNode *node)
 {
@@ -3381,7 +3409,6 @@
 	PurplePluginProtocolInfo *prpl_info;
 	const char *name = NULL;
 	char *filename, *path;
-	GdkPixbuf *ret;
 	PurplePresence *p;
 
 	if(PURPLE_BLIST_NODE_IS_CONTACT(node)) {
@@ -3394,11 +3421,9 @@
 		gtkbuddynode = node->ui_data;
 		p = purple_buddy_get_presence(buddy);
 		if (purple_presence_is_status_primitive_active(p, PURPLE_STATUS_MOBILE)) {
-			path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems", 
+			path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems",
 						"16", "mobile.png", NULL);
-			ret = gdk_pixbuf_new_from_file(path, NULL);
-			g_free(path);
-			return ret;
+			return _pidgin_blist_get_cached_emblem(path);
 		}
 
 		if (((struct _pidgin_blist_node*)(node->parent->ui_data))->contact_expanded) {
@@ -3410,26 +3435,22 @@
 		return NULL;
 	}
 
+	g_return_val_if_fail(buddy != NULL, NULL);
+
 	if (!purple_privacy_check(buddy->account, purple_buddy_get_name(buddy))) {
 		path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems", "16", "blocked.png", NULL);
-		ret = gdk_pixbuf_new_from_file(path, NULL);
-		g_free(path);
-		return ret;
+		return _pidgin_blist_get_cached_emblem(path);
 	}
 
 	p = purple_buddy_get_presence(buddy);
 	if (purple_presence_is_status_primitive_active(p, PURPLE_STATUS_MOBILE)) {
 		path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems", "16", "mobile.png", NULL);
-		ret = gdk_pixbuf_new_from_file(path, NULL);
-		g_free(path);
-		return ret;
+		return _pidgin_blist_get_cached_emblem(path);
 	}
 
 	if (purple_presence_is_status_primitive_active(p, PURPLE_STATUS_TUNE)) {
 		path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems", "16", "music.png", NULL);
-		ret = gdk_pixbuf_new_from_file(path, NULL);
-		g_free(path);
-		return ret;
+		return _pidgin_blist_get_cached_emblem(path);
 	}
 
 	prpl = purple_find_prpl(purple_account_get_protocol_id(buddy->account));
@@ -3446,12 +3467,10 @@
 	filename = g_strdup_printf("%s.png", name);
 
 	path = g_build_filename(DATADIR, "pixmaps", "pidgin", "emblems", "16", filename, NULL);
-	ret = gdk_pixbuf_new_from_file(path, NULL);
-
 	g_free(filename);
-	g_free(path);
-
-	return ret;
+
+	/* _pidgin_blist_get_cached_emblem() assumes ownership of path */
+	return _pidgin_blist_get_cached_emblem(path);
 }
 
 
@@ -6897,6 +6916,8 @@
 {
 	void *gtk_blist_handle = pidgin_blist_get_handle();
 
+	cached_emblems = g_hash_table_new_full(g_str_hash, g_str_equal, g_free, NULL);
+
 	purple_signal_connect(purple_connections_get_handle(), "signed-on",
 						gtk_blist_handle, PURPLE_CALLBACK(account_signon_cb),
 						NULL);
@@ -6948,6 +6969,8 @@
 
 void
 pidgin_blist_uninit(void) {
+	g_hash_table_destroy(cached_emblems);
+
 	purple_signals_unregister_by_instance(pidgin_blist_get_handle());
 	purple_signals_disconnect_by_handle(pidgin_blist_get_handle());
 }

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