| /* |
| * Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. Oracle designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Oracle in the LICENSE file that accompanied this code. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package javax.swing.plaf.metal; |
| |
| import java.awt.*; |
| import javax.swing.*; |
| import javax.swing.plaf.ComponentUI; |
| import javax.swing.plaf.UIResource; |
| import javax.swing.plaf.basic.*; |
| |
| /** |
| * Metal implementation of <code>MenuBarUI</code>. This class is responsible |
| * for providing the metal look and feel for <code>JMenuBar</code>s. |
| * |
| * @see javax.swing.plaf.MenuBarUI |
| * @since 1.5 |
| */ |
| public class MetalMenuBarUI extends BasicMenuBarUI { |
| /** |
| * Creates the <code>ComponentUI</code> implementation for the passed |
| * in component. |
| * |
| * @param x JComponent to create the ComponentUI implementation for |
| * @return ComponentUI implementation for <code>x</code> |
| * @throws NullPointerException if <code>x</code> is null |
| */ |
| public static ComponentUI createUI(JComponent x) { |
| if (x == null) { |
| throw new NullPointerException("Must pass in a non-null component"); |
| } |
| return new MetalMenuBarUI(); |
| } |
| |
| /** |
| * Configures the specified component appropriate for the metal look and |
| * feel. |
| * |
| * @param c the component where this UI delegate is being installed |
| * @throws NullPointerException if <code>c</code> is null. |
| */ |
| public void installUI(JComponent c) { |
| super.installUI(c); |
| MetalToolBarUI.register(c); |
| } |
| |
| /** |
| * Reverses configuration which was done on the specified component during |
| * <code>installUI</code>. |
| * |
| * @param c the component where this UI delegate is being installed |
| * @throws NullPointerException if <code>c</code> is null. |
| */ |
| public void uninstallUI(JComponent c) { |
| super.uninstallUI(c); |
| MetalToolBarUI.unregister(c); |
| } |
| |
| /** |
| * 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) { |
| boolean isOpaque = c.isOpaque(); |
| if (g == null) { |
| throw new NullPointerException("Graphics must be non-null"); |
| } |
| if (isOpaque && (c.getBackground() instanceof UIResource) && |
| UIManager.get("MenuBar.gradient") != null) { |
| if (MetalToolBarUI.doesMenuBarBorderToolBar((JMenuBar)c)) { |
| JToolBar tb = (JToolBar)MetalToolBarUI. |
| findRegisteredComponentOfType(c, JToolBar.class); |
| if (tb.isOpaque() &&tb.getBackground() instanceof UIResource) { |
| MetalUtils.drawGradient(c, g, "MenuBar.gradient", 0, 0, |
| c.getWidth(), c.getHeight() + |
| tb.getHeight(), true); |
| paint(g, c); |
| return; |
| } |
| } |
| MetalUtils.drawGradient(c, g, "MenuBar.gradient", 0, 0, |
| c.getWidth(), c.getHeight(),true); |
| paint(g, c); |
| } |
| else { |
| super.update(g, c); |
| } |
| } |
| } |