public static Color getBackgroundColor(Component component) {
if (component == null) return null;
if (component instanceof BackgroundPainter) {
ComponentPainter painter = ((BackgroundPainter) component).getComponentPainter();
if (painter != null) {
Color color = painter.getColor(component);
if (color != null) return color;
}
}
return component.isOpaque()
? component.getBackground()
: getBackgroundColor(component.getParent());
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
if (painter != null) {
Shape shape = getShape();
if (shape != null) {
Shape clip = g.getClip();
g.clipRect(
shapedInsets.left,
shapedInsets.top,
getWidth() - shapedInsets.left - shapedInsets.right,
getHeight() - shapedInsets.top - shapedInsets.bottom);
((Graphics2D) g).clip(shape);
painter.paint(
this, g, 0, 0, getWidth(), getHeight(), direction, horizontalFlip, verticalFlip);
g.setClip(clip);
} else
painter.paint(
this, g, 0, 0, getWidth(), getHeight(), direction, horizontalFlip, verticalFlip);
}
}