/** * If necessary paints the background of the component, then invokes <code>paint</code>. * * @param g Graphics to paint to * @param c JComponent painting on * @throws NullPointerException if <code>g</code> or <code>c</code> is null * @see javax.swing.plaf.ComponentUI#update * @see javax.swing.plaf.ComponentUI#paint * @since 1.5 */ public void update(Graphics g, JComponent c) { AbstractButton button = (AbstractButton) c; if ((c.getBackground() instanceof UIResource) && button.isContentAreaFilled() && c.isEnabled()) { ButtonModel model = button.getModel(); if (!MetalUtils.isToolBarButton(c)) { if (!model.isArmed() && !model.isPressed() && MetalUtils.drawGradient( c, g, "Button.gradient", 0, 0, c.getWidth(), c.getHeight(), true)) { paint(g, c); return; } } else if (model.isRollover() && MetalUtils.drawGradient( c, g, "Button.gradient", 0, 0, c.getWidth(), c.getHeight(), true)) { paint(g, c); return; } } super.update(g, c); }
public void uninstallDefaults(AbstractButton b) { super.uninstallDefaults(b); }