IdoUserMenuItem: only allow file icons as avatars

In practice, all avatars are file icons. This restriction allowed for quite
some cleanup, as we don't need to worry about symbolic icons and themes aymore.

Note: this patch removes the warning when the user avatar image was not found.
This is a common enough case that the warning just clutters up logs.

1 files changed, 53 insertions, 105 deletions

diff --git a/src/idousermenuitem.c b/src/idousermenuitem.c
index c92a890..ffb9412 100644
--- a/src/idousermenuitem.c
+++ b/src/idousermenuitem.c
@@ -62,100 +62,6 @@ static gboolean ido_user_menu_item_primitive_draw_cb_gtk_3 (GtkWidget * image,
                                                             gpointer    gself);
 
 /***
-****  Avatar
-***/
-
-static GdkPixbuf *
-load_gicon (GtkWidget * self, GIcon * icon, GError ** error)
-{
-  GtkSettings * settings;
-  gint width;
-  gint height;
-  GdkScreen * screen;
-  GtkIconTheme * icon_theme;
-  GtkIconInfo * info;
-  GtkStyleContext * style_context;
-  GdkPixbuf * pixbuf;
-
-  settings = gtk_widget_get_settings (self);
-  if (settings == NULL) /* not attached to a toplevel yet */
-    settings = gtk_settings_get_default ();
-
-  if (!gtk_icon_size_lookup_for_settings (settings,
-                                          GTK_ICON_SIZE_MENU,
-                                          &width,
-                                          &height))
-    {
-      /* arbitrary default size in case _size_lookup fails */
-      width = 12;
-      height = 12;
-    }
-
-  if ((screen = gtk_widget_get_screen (self)))
-    icon_theme = gtk_icon_theme_get_for_screen (screen);
-  else
-    icon_theme = gtk_icon_theme_get_default (); 
-  
-
-  info = gtk_icon_theme_lookup_by_gicon (icon_theme,
-                                         icon,
-                                         MIN (width, height),
-                                         GTK_ICON_LOOKUP_USE_BUILTIN |
-                                         GTK_ICON_LOOKUP_GENERIC_FALLBACK |
-                                         GTK_ICON_LOOKUP_FORCE_SIZE);
-
-  style_context = gtk_widget_get_style_context (self);
-
-  pixbuf = gtk_icon_info_load_symbolic_for_context (info,
-                                                    style_context,
-                                                    NULL,
-                                                    error);
-
-  g_clear_object (&info);
-  return pixbuf;
-}
-
-static void
-update_avatar (IdoUserMenuItem * self)
-{
-  IdoUserMenuItemPrivate * p = self->priv;
-  GdkPixbuf * pixbuf;
-  GtkImage * image;
-
-  if (p->icon == NULL)
-    {
-      pixbuf = NULL;
-    }
-  else
-    {
-      GError * error = NULL;
-
-      pixbuf = load_gicon (GTK_WIDGET(self), p->icon, &error);
-
-      if (error != NULL)
-        {
-          g_warning ("Can't load user avatar icon: %s", error->message);
-          g_error_free (error);
-        }
-    }
-
-  image = GTK_IMAGE (p->user_image);
-
-  if (pixbuf != NULL)
-    {
-      gtk_image_set_from_pixbuf (image, pixbuf);
-      g_object_unref (G_OBJECT (pixbuf));
-    }
-  else
-    {
-      GIcon * icon;
-      icon = g_themed_icon_new_with_default_fallbacks (FALLBACK_ICON_NAME);
-      gtk_image_set_from_gicon (image, icon, GTK_ICON_SIZE_MENU);
-      g_object_unref (icon);
-    }
-}
-
-/***
 ****  GObject virtual functions
 ***/
 
@@ -301,6 +207,9 @@ ido_user_menu_item_init (IdoUserMenuItem *self)
 
   // Create the UI elements.
   priv->user_image = gtk_image_new ();
+  gtk_image_set_from_icon_name (GTK_IMAGE (priv->user_image),
+                                FALLBACK_ICON_NAME,
+                                GTK_ICON_SIZE_MENU);
 
   priv->user_name = gtk_label_new (NULL);
 
@@ -337,11 +246,6 @@ ido_user_menu_item_init (IdoUserMenuItem *self)
   g_signal_connect_after (GTK_WIDGET(self), "draw",
                           G_CALLBACK(ido_user_menu_item_primitive_draw_cb_gtk_3),
                           GTK_WIDGET(self));
-
-  /* load_gicon()'s behavior depends on the current screen/toplevel/etc,
-     so reload the avatar whenever the widget is realized */
-  g_signal_connect_swapped (self, "realize",
-                            G_CALLBACK(update_avatar), self);
 }
 
 
@@ -387,6 +291,39 @@ ido_user_menu_item_primitive_draw_cb_gtk_3 (GtkWidget * widget,
 }
 
 /***
+****  Avatar
+***/
+gboolean
+ido_user_menu_item_set_icon_from_file_icon (IdoUserMenuItem *self,
+                                            GFileIcon       *icon)
+{
+  GFile *file;
+  gchar *path;
+  gint width = 12;
+  gint height = 12;
+  GdkPixbuf *pixbuf;
+
+  file = g_file_icon_get_file (G_FILE_ICON (icon));
+  path = g_file_get_path (file);
+
+  gtk_icon_size_lookup_for_settings (gtk_widget_get_settings (GTK_WIDGET (self)),
+                                     GTK_ICON_SIZE_MENU,
+                                     &width, &height);
+
+  pixbuf = gdk_pixbuf_new_from_file_at_scale (path, width, height, TRUE, NULL);
+  g_free (path);
+
+  if (pixbuf)
+    {
+      gtk_image_set_from_pixbuf (GTK_IMAGE (self->priv->user_image), pixbuf);
+      g_object_unref (pixbuf);
+      return TRUE;
+    }
+
+  return FALSE;
+}
+
+/***
 ****  PUBLIC API
 ***/
 
@@ -395,14 +332,25 @@ ido_user_menu_item_set_icon (IdoUserMenuItem * self, GIcon * icon)
 {
   IdoUserMenuItemPrivate * p = self->priv;
 
-  if (p->icon != icon)
-    {
-      g_clear_object (&p->icon);
+  if (p->icon == icon)
+    return;
+
+  g_clear_object (&p->icon);
 
-      if (icon != NULL)
-        p->icon = g_object_ref (icon);
+  if (icon)
+    p->icon = g_object_ref (icon);
 
-      update_avatar (self);
+  /* Avatars are always loaded from disk. Show the fallback when no icon
+   * is set, the icon is not a file icon, or the file could not be
+   * found.
+   */
+  if (icon == NULL ||
+      !G_IS_FILE_ICON (icon) ||
+      !ido_user_menu_item_set_icon_from_file_icon (self, G_FILE_ICON (icon)))
+    {
+      gtk_image_set_from_icon_name (GTK_IMAGE (p->user_image),
+                                    FALLBACK_ICON_NAME,
+                                    GTK_ICON_SIZE_MENU);
     }
 }