question: protected void paintContentBorderBottomEdge ( Graphics g , int tabPlacement , int selectedIndex , int x , int y , int w , int h ) { boolean leftToRight = CompiereUtils . isLeftToRight ( tabPane ) ; int bottom = y + h - 1 ; int right = x + w - 1 ; Rectangle selRect = selectedIndex < 0 ? null : getTabBounds ( selectedIndex , calcRect ) ; g . setColor ( shadow ) ; if ( tabPlacement != BOTTOM || selectedIndex < 0 || ( selRect . x < x || selRect . x > x + w ) ) { g . setColor ( darkShadow ) ; g . drawLine ( x , y + h - 1 , x + w - 1 , y + h - 1 ) ; } else { boolean lastInRun = isLastInRun ( selectedIndex ) ; g . setColor ( darkShadow ) ; if ( leftToRight || lastInRun ) g . drawLine ( x , bottom , selRect . x , bottom ) ; else g . drawLine ( x , bottom , selRect . x - 1 , bottom ) ; if ( selRect . x + selRect . width < x + w - 2 ) { if ( leftToRight && ! lastInRun ) g . drawLine ( selRect . x + selRect . width , bottom , right , bottom ) ; else g . drawLine ( selRect . x + selRect . width - 1 , bottom , right , bottom ) ; } } }
target:  Paint bottom content area edge