Basic RadioButton implementation. To implement a Diff RadioButton UI, generally you should:
public function paint(c:Component, g:Graphics, r:Rectangle):VoidDescription copied from ComponentUI
Notifies this UI delegate that it's time to paint the specified
component. This method is invoked by Component
when the specified component is being painted.
In general this method need be overridden by subclasses; all look-and-feel rendering code should reside in this method. And there is a default background paint method, you should call it in your overridden paint method.
public function getPreferredSize(c:Component):DimensionDescription copied from ComponentUI
Returns the specified component's preferred size appropriate for
the look and feel. If null is returned, the preferred
size will be calculated by the component's layout manager instead
(this is the preferred approach for any component with a specific
layout manager installed). The default implementation of this
method returns null.
public function getMinimumSize(c:Component):DimensionDescription copied from ComponentUI
Returns the specified component's minimum size appropriate for
the look and feel. If null is returned, the minimum
size will be calculated by the component's layout manager instead
(this is the preferred approach for any component with a specific
layout manager installed). The default implementation of this
method invokes getPreferredSize and returns that value.