diff options
| -rw-r--r-- | widget/gtk/WidgetStyleCache.cpp | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/widget/gtk/WidgetStyleCache.cpp b/widget/gtk/WidgetStyleCache.cpp index c25b426bd..7e5488b49 100644 --- a/widget/gtk/WidgetStyleCache.cpp +++ b/widget/gtk/WidgetStyleCache.cpp @@ -626,6 +626,20 @@ GetWidget(WidgetNodeType aWidgetType) GtkWidget* widget = sWidgetStorage[aWidgetType]; if (!widget) { widget = CreateWidget(aWidgetType); + // In GTK versions prior to 3.18, automatic invalidation of style contexts + // for widgets was delayed until the next resize event. Gecko however, + // typically uses the style context before the resize event runs and so an + // explicit invalidation may be required. This is necessary if a style + // property was retrieved before all changes were made to the style + // context. One such situation is where gtk_button_construct_child() + // retrieves the style property "image-spacing" during construction of the + // GtkButton, before its parent is set to provide inheritance of ancestor + // properties. More recent GTK versions do not need this, but do not + // re-resolve until required and so invalidation does not trigger + // unnecessary resolution in general. + GtkStyleContext* style = gtk_widget_get_style_context(widget); + gtk_style_context_invalidate(style); + sWidgetStorage[aWidgetType] = widget; } return widget; |