question: void applyCompoundShape ( Region shape ) { checkTreeLock ( ) ; if ( ! areBoundsValid ( ) ) { if ( mixingLog . isLoggable ( PlatformLogger . Level . FINE ) ) { mixingLog . fine ( "this = " + this + "; areBoundsValid = " + areBoundsValid ( ) ) ; } return ; } if ( ! isLightweight ( ) ) { ComponentPeer peer = getPeer ( ) ; if ( peer != null ) { if ( shape . isEmpty ( ) ) { shape = Region . EMPTY_REGION ; } if ( shape . equals ( getNormalShape ( ) ) ) { if ( this . compoundShape == null ) { return ; } this . compoundShape = null ; peer . applyShape ( null ) ; } else { if ( shape . equals ( getAppliedShape ( ) ) ) { return ; } this . compoundShape = shape ; Point compAbsolute = getLocationOnWindow ( ) ; if ( mixingLog . isLoggable ( PlatformLogger . Level . FINER ) ) { mixingLog . fine ( "this = " + this + "; compAbsolute=" + compAbsolute + "; shape=" + shape ) ; } peer . applyShape ( shape . getTranslatedRegion ( - compAbsolute . x , - compAbsolute . y ) ) ; } } } }
target:  Applies the shape to the component