1 files changed, 74 insertions, 0 deletions
diff --git a/src/ui/ui.c b/src/ui/ui.c
index 44c72938..4935f77c 100644
--- a/src/ui/ui.c
+++ b/src/ui/ui.c
@@ -32,6 +32,7 @@
 #include <stdlib.h>
 
 #include <cairo-xlib.h>
+#include <gio/gdesktopappinfo.h>
 
 static void meta_ui_accelerator_parse(const char* accel, guint* keysym, guint* keycode, GdkModifierType* keymask);
 
@@ -647,6 +648,79 @@ meta_ui_get_default_mini_icon (MetaUI *ui)
   return default_icon;
 }
 
+static GdkPixbuf *
+load_window_icon_from_name (char *name, int size, int scale)
+{
+  GtkIconTheme *theme = gtk_icon_theme_get_default ();
+  GdkPixbuf *pixbuf = NULL;
+
+  /* If the res_name window property maps to an icon, use that */
+  pixbuf = gtk_icon_theme_load_icon_for_scale (theme, name, size, scale, GTK_ICON_LOOKUP_FORCE_SIZE, NULL);
+  if (pixbuf != NULL)
+    return pixbuf;
+
+  char ***results;
+  gchar *desktop_id = NULL;
+  gint i, j;
+  GDesktopAppInfo *info;
+  GIcon *gicon;
+  GtkIconInfo *icon_info;
+
+  /* Find a proper desktop file based on the window property name */
+  results = g_desktop_app_info_search (name);
+
+  for (i = 0; results[i]; i++)
+    {
+      for (j = 0; results[i][j]; j++)
+        {
+          /* We are only interested in the top ranking result, so we use that and free up the rest */
+          if (desktop_id == NULL)
+            desktop_id = g_strdup(results[i][j]);
+        }
+      g_strfreev (results[i]);
+    }
+  g_free (results);
+
+  if (desktop_id == NULL)
+    return NULL;
+
+  /* Now that we have the desktop file ID, we extract the icon from it and render it */
+  info = g_desktop_app_info_new (desktop_id);
+  gicon = g_app_info_get_icon (G_APP_INFO (info));
+  icon_info = gtk_icon_theme_lookup_by_gicon_for_scale (theme, gicon, size, scale, GTK_ICON_LOOKUP_FORCE_SIZE);
+
+  pixbuf = gtk_icon_info_load_icon (icon_info, NULL);
+
+  g_object_unref (icon_info);
+  g_free (desktop_id);
+
+  return pixbuf;
+}
+
+GdkPixbuf*
+meta_ui_get_window_icon_from_name (MetaUI *ui, char *name)
+{
+  int scale;
+  int size;
+
+  scale = gtk_widget_get_scale_factor (GTK_WIDGET (ui->frames));
+  size = meta_prefs_get_icon_size() / scale;
+
+  return load_window_icon_from_name (name, size, scale);
+}
+
+GdkPixbuf*
+meta_ui_get_mini_icon_from_name (MetaUI *ui, char *name)
+{
+  int scale;
+  int size;
+
+  scale = gtk_widget_get_scale_factor (GTK_WIDGET (ui->frames));
+  size = META_MINI_ICON_WIDTH / scale;
+
+  return load_window_icon_from_name (name, size, scale);
+}
+
 gboolean
 meta_ui_window_should_not_cause_focus (Display *xdisplay,
                                        Window   xwindow)