Refactor loading cached page icon into katze_load_cached_icon

The function is optimized for loading icons and independant from
a KatzeNet instance.

extensions/feed-panel/feed-panel.c

@@ -91,7 +91,7 @@ feed_panel_treeview_render_icon_cb (GtkTreeViewColumn* column,
     uri = katze_item_get_uri (pitem);
     if (uri)
     {
-        pixbuf = katze_net_load_icon (panel->net, uri, NULL, NULL, NULL);
+        pixbuf = katze_load_cached_icon (uri, NULL);
         if (!pixbuf)
             pixbuf = panel->pixbuf;
     }

katze/katze-arrayaction.c

@@ -301,8 +301,7 @@ katze_array_action_generate_menu (KatzeArrayAction* array_action,
                 icon = gtk_widget_render_icon (menuitem,
                     GTK_STOCK_DIRECTORY, GTK_ICON_SIZE_MENU, NULL);
             else
-                icon = katze_net_load_icon (array_action->net,
+                icon = katze_load_cached_icon (katze_item_get_uri (item), proxy);
-                    katze_item_get_uri (item), NULL, proxy, NULL);
             image = gtk_image_new_from_pixbuf (icon);
             g_object_unref (icon);
         }
@@ -460,8 +459,7 @@ katze_array_action_item_notify_cb (KatzeItem*   item,
     }
     else if (!KATZE_IS_ARRAY (item) && !strcmp (property, "uri"))
     {
-        icon = katze_net_load_icon (array_action->net, katze_item_get_uri (item),
+        icon = katze_load_cached_icon (katze_item_get_uri (item), GTK_WIDGET (toolitem));
-            NULL, GTK_WIDGET (toolitem), NULL);
         image = gtk_image_new_from_pixbuf (icon);
         g_object_unref (icon);
         gtk_widget_show (image);
@@ -497,8 +495,7 @@ katze_array_action_proxy_create_menu_proxy_cb (GtkWidget* proxy,
             icon = gtk_widget_render_icon (menuitem,
                 GTK_STOCK_DIRECTORY, GTK_ICON_SIZE_MENU, NULL);
         else
-            icon = katze_net_load_icon (array_action->net,
+            icon = katze_load_cached_icon (katze_item_get_uri (item), proxy);
-                katze_item_get_uri (item), NULL, proxy, NULL);
         image = gtk_image_new_from_pixbuf (icon);
         g_object_unref (icon);
     }
@@ -569,8 +566,7 @@ katze_array_action_create_tool_item_for (KatzeArrayAction* array_action,
         icon = gtk_widget_render_icon (GTK_WIDGET (toolitem),
             GTK_STOCK_DIRECTORY, GTK_ICON_SIZE_MENU, NULL);
     else
-        icon = katze_net_load_icon (array_action->net, uri,
+        icon = katze_load_cached_icon (uri, GTK_WIDGET (toolitem));
-            NULL, GTK_WIDGET (toolitem), NULL);
     image = gtk_image_new_from_pixbuf (icon);
     g_object_unref (icon);
     gtk_widget_show (image);

katze/katze-utils.c

@@ -14,6 +14,7 @@
 #include <glib/gstdio.h>
 #include <glib/gi18n.h>
 #include <gio/gio.h>
+#include <libsoup/soup.h>
 
 #include <string.h>
 
@@ -1402,3 +1403,61 @@ katze_widget_has_touchscreen_mode (GtkWidget* widget)
         return enabled;
     }
 }
+
+/**
+ * katze_load_cached_icon:
+ * @uri: an URI string
+ * @widget: a #GtkWidget, or %NULL
+ *
+ * Loads a cached icon for the specified @uri. If there is no
+ * icon and @widget is specified, a default will be returned.
+ *
+ * Returns: a #GdkPixbuf, or %NULL
+ *
+ * Since: 0.2.2
+ */
+GdkPixbuf*
+katze_load_cached_icon (const gchar* uri,
+                        GtkWidget*   widget)
+{
+    GdkPixbuf* icon = NULL;
+
+    if (g_str_has_prefix (uri, "http://"))
+    {
+        guint i;
+        gchar* icon_uri;
+        gchar* checksum;
+        gchar* ext;
+        gchar* filename;
+        gchar* path;
+
+        i = 8;
+        while (uri[i] != '\0' && uri[i] != '/')
+            i++;
+        if (uri[i] == '/')
+        {
+            icon_uri = g_strdup (uri);
+            icon_uri[i] = '\0';
+            icon_uri = g_strdup_printf ("%s/favicon.ico", icon_uri);
+        }
+        else
+            icon_uri = g_strdup_printf ("%s/favicon.ico", uri);
+
+        checksum = g_compute_checksum_for_string (G_CHECKSUM_MD5, icon_uri, -1);
+        ext = g_strrstr (icon_uri, ".");
+        g_free (icon_uri);
+        filename = g_strdup_printf ("%s%s", checksum, ext ? ext : "");
+        g_free (checksum);
+        path = g_build_filename (g_get_user_cache_dir (), PACKAGE_NAME,
+                                 "icons", filename, NULL);
+        if ((icon = gdk_pixbuf_new_from_file_at_size (path, 16, 16, NULL)))
+        {
+            g_free (path);
+            return icon;
+        }
+        g_free (path);
+    }
+
+    return icon || !widget ? icon : gtk_widget_render_icon (widget,
+        GTK_STOCK_FILE, GTK_ICON_SIZE_MENU, NULL);
+}

katze/katze-utils.h

@@ -147,6 +147,10 @@ katze_mkdir_with_parents             (const gchar* pathname,
 gboolean
 katze_widget_has_touchscreen_mode    (GtkWidget*      widget);
 
+GdkPixbuf*
+katze_load_cached_icon               (const gchar*    uri,
+                                      GtkWidget*      widget);
+
 G_END_DECLS
 
 #endif /* __KATZE_UTILS_H__ */

midori/midori-locationaction.c

@@ -642,13 +642,12 @@ midori_location_entry_render_text_cb (GtkCellLayout*   layout,
     gtk_tree_model_get (model, iter, URI_COL, &uri, TITLE_COL, &title,
                         FAVICON_COL, &icon, -1);
 
-    if (G_UNLIKELY (!icon))
+    if (G_UNLIKELY (!icon) && uri)
     {
         #if !HAVE_HILDON
         MidoriLocationAction* action
             = g_object_get_data (G_OBJECT (renderer), "location-action");
-        icon = katze_net_load_icon (action->net, uri, NULL, NULL, NULL);
+        if ((icon = katze_load_cached_icon (uri, NULL)))
-        if (G_LIKELY (icon))
         {
             midori_location_action_set_icon_for_uri (action, icon, uri);
             g_object_unref (icon);
@@ -657,7 +656,7 @@ midori_location_entry_render_text_cb (GtkCellLayout*   layout,
             midori_location_action_set_icon_for_uri (action, action->default_icon, uri);
         #endif
     }
-    else
+    else if (icon)
         g_object_unref (icon);
 
     desc = desc_uri = desc_title = key = NULL;

midori/midori-searchaction.c

@@ -432,7 +432,7 @@ midori_search_action_get_icon (KatzeNet*  net,
     }
 
     if ((icon = katze_item_get_uri (item)) && (g_strstr_len (icon, 8, "://")))
-        return katze_net_load_icon (net, icon, NULL, widget, NULL);
+        return katze_load_cached_icon (icon, widget);
 
     return gtk_widget_render_icon (widget, GTK_STOCK_FILE,
                                    GTK_ICON_SIZE_MENU, NULL);

panels/midori-bookmarks.c

@@ -563,9 +563,7 @@ midori_bookmarks_treeview_render_icon_cb (GtkTreeViewColumn* column,
         pixbuf = gtk_widget_render_icon (treeview, GTK_STOCK_DIRECTORY,
                                          GTK_ICON_SIZE_MENU, NULL);
     else if (katze_item_get_uri (item))
-        pixbuf = katze_net_load_icon (
+        pixbuf = katze_load_cached_icon (katze_item_get_uri (item), treeview);
-            MIDORI_BOOKMARKS (gtk_widget_get_parent (treeview))->net,
-            katze_item_get_uri (item), NULL, treeview, NULL);
     g_object_set (renderer, "pixbuf", pixbuf, NULL);
 
     if (pixbuf)

panels/midori-history.c

@@ -560,9 +560,7 @@ midori_history_treeview_render_icon_cb (GtkTreeViewColumn* column,
         pixbuf = gtk_widget_render_icon (treeview, GTK_STOCK_DIRECTORY,
                                          GTK_ICON_SIZE_MENU, NULL);
     else
-        pixbuf = katze_net_load_icon (
+        pixbuf = katze_load_cached_icon (katze_item_get_uri (item), treeview);
-            MIDORI_HISTORY (gtk_widget_get_parent (treeview))->net,
-            katze_item_get_uri (item), NULL, treeview, NULL);
 
     g_object_set (renderer, "pixbuf", pixbuf, NULL);