コード例 #1
0
 /**
  * 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);
 }
コード例 #2
0
ファイル: SynthButtonUI.java プロジェクト: FauxFaux/jdk9-jdk
 void paintBackground(SynthContext context, Graphics g, JComponent c) {
   if (((AbstractButton) c).isContentAreaFilled()) {
     context.getPainter().paintButtonBackground(context, g, 0, 0, c.getWidth(), c.getHeight());
   }
 }