public Rectangle getAbsoluteContainingBlock ( ) { if ( cbox instanceof Viewport ) //initial containing block { Rectangle ab = cbox . getAbsoluteBounds ( ) ; //normally positioned at 0,0; other value for nested viewports (e.g. objects) Rectangle visible = ( ( Viewport ) cbox ) . getVisibleRect ( ) ; return new Rectangle ( ab . x , ab . y , visible . width , visible . height ) ; } else //static or relative position return cbox . getAbsoluteContentBounds ( ) ; }
Obtains the containing block absolute bounds .