Refactor|Client|Widgets: Added common GuiWidget background geometry
All widgets can now use GuiWidget::Background to specify what kind ofa background should be drawn for the widget.
Also added a virtual hit test method to GuiWidget.
View differences
Refactor|Client|Widgets: Added common GuiWidget background geometry
All widgets can now use GuiWidget::Background to specify what kind of
a background should be drawn for the widget.
Also added a virtual hit test method to GuiWidget.