| /* SwingMenuBarPeer.java -- A Swing based peer for AWT menu bars |
| Copyright (C) 2006 Free Software Foundation, Inc. |
| |
| This file is part of GNU Classpath. |
| |
| GNU Classpath is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2, or (at your option) |
| any later version. |
| |
| GNU Classpath 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 for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with GNU Classpath; see the file COPYING. If not, write to the |
| Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA |
| 02110-1301 USA. |
| |
| Linking this library statically or dynamically with other modules is |
| making a combined work based on this library. Thus, the terms and |
| conditions of the GNU General Public License cover the whole |
| combination. |
| |
| As a special exception, the copyright holders of this library give you |
| permission to link this library with independent modules to produce an |
| executable, regardless of the license terms of these independent |
| modules, and to copy and distribute the resulting executable under |
| terms of your choice, provided that you also meet, for each linked |
| independent module, the terms and conditions of the license of that |
| module. An independent module is a module which is not derived from |
| or based on this library. If you modify this library, you may extend |
| this exception to your version of the library, but you are not |
| obligated to do so. If you do not wish to do so, delete this |
| exception statement from your version. */ |
| |
| package gnu.java.awt.peer.swing; |
| |
| import java.awt.Container; |
| import java.awt.Font; |
| import java.awt.Graphics; |
| import java.awt.Menu; |
| import java.awt.MenuBar; |
| import java.awt.Point; |
| import java.awt.event.MouseEvent; |
| import java.awt.peer.MenuBarPeer; |
| |
| import javax.swing.JMenuBar; |
| |
| /** |
| * A Swing based peer for the AWT menu bar. This is a little bit different from |
| * the other peers, since the AWT MenuBar is not derived from the AWT |
| * component. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public class SwingMenuBarPeer |
| implements MenuBarPeer |
| { |
| |
| /** |
| * The AWT menu bar. |
| */ |
| MenuBar awtMenuBar; |
| |
| /** |
| * The Swing menu bar. |
| */ |
| SwingMenuBar menuBar; |
| |
| /** |
| * The peer of the frame that contains this menu bar. |
| */ |
| SwingFramePeer framePeer; |
| |
| /** |
| * A specialized JMenuBar that can be used as 'backend' for AWT MenuBars. |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| private class SwingMenuBar |
| extends JMenuBar |
| { |
| /** |
| * Overridden in order to provide a parent frame for this menu bar. The |
| * menu bar still is not inside the component hierarchy, we are faking |
| * here. |
| */ |
| public Container getParent() |
| { |
| Container result = null; |
| if (framePeer != null) |
| result = (Container) framePeer.awtComponent; |
| return result; |
| } |
| |
| /** |
| * Unconditionally returns <code>true</code>, since we assume that when the |
| * menubar has a peer, it must be showing. |
| * |
| * @return <code>true</code> |
| */ |
| public boolean isShowing() |
| { |
| // FIXME: This might be wrong. Maybe find a better way to do that. |
| return true; |
| } |
| |
| /** |
| * Handles mouse events by forwarding it to |
| * <code>processMouseEvent()</code>. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseEvent(MouseEvent ev) |
| { |
| ev.setSource(this); |
| processMouseEvent(ev); |
| } |
| |
| /** |
| * Determines the menubar's screen location by asking the SwingFramePeer |
| * for it. |
| * |
| * @return the screen location of the menu bar |
| */ |
| public Point getLocationOnScreen() |
| { |
| return framePeer.getMenuLocationOnScreen(); |
| } |
| } |
| |
| /** |
| * Creates a new <code>SwingMenuBarPeer</code> instance. |
| * |
| * @param awtMenuBar the AWT menu bar |
| */ |
| public SwingMenuBarPeer(MenuBar awtMenuBar) |
| { |
| this.awtMenuBar = awtMenuBar; |
| menuBar = new SwingMenuBar(); |
| menuBar.setDoubleBuffered(false); |
| // Add all the menus that are already in the MenuBar. |
| for (int i = 0; i < awtMenuBar.getMenuCount(); i++) |
| { |
| Menu menu = awtMenuBar.getMenu(i); |
| menu.addNotify(); |
| addMenu(awtMenuBar.getMenu(i)); |
| } |
| } |
| |
| /** |
| * Sets the <code>SwingFramePeer</code> of the frame that holds this menu. |
| * |
| * @param peer the <code>SwingFramePeer</code> to set |
| */ |
| public void setFramePeer(SwingFramePeer peer) |
| { |
| framePeer = peer; |
| } |
| |
| /** |
| * Adds a menu to the menu bar. |
| * |
| * @param m the menu to add |
| */ |
| public void addMenu(Menu m) |
| { |
| SwingMenuPeer menuPeer = (SwingMenuPeer) m.getPeer(); |
| menuBar.add(menuPeer.menu); |
| } |
| |
| /** |
| * Adds a help menu to the menu bar. |
| * |
| * @param menu the menu to add |
| */ |
| public void addHelpMenu(Menu menu) |
| { |
| // FIXME: We should manage the help menu differently, so that it always |
| // appears at the rightmost position. |
| SwingMenuPeer menuPeer = (SwingMenuPeer) menu.getPeer(); |
| menuBar.add(menuPeer.menu); |
| } |
| |
| /** |
| * Removes the menu with the specified index. |
| * |
| * @param index the index of the menu to remove |
| */ |
| public void delMenu(int index) |
| { |
| menuBar.remove(index); |
| } |
| |
| /** |
| * Disposes this peer. This releases any reference to the AWT and Swing |
| * components. |
| */ |
| public void dispose() |
| { |
| menuBar = null; |
| awtMenuBar = null; |
| } |
| |
| /** |
| * Sets a font for the menu bar. |
| * |
| * @param font the font to set |
| */ |
| public void setFont(Font font) |
| { |
| menuBar.setFont(font); |
| } |
| |
| /** |
| * Sets the width of the menu bar. This is called from the top level |
| * component peers to adjust the width of the menubar when their sizes |
| * change. |
| * |
| * @param w the width to set |
| */ |
| public void setWidth(int w) |
| { |
| menuBar.setSize(w, menuBar.getPreferredSize().height); |
| menuBar.doLayout(); |
| } |
| |
| /** |
| * Paints the menu bar. |
| * |
| * @param g the graphics context to use for painting |
| */ |
| public void peerPaint(Graphics g) |
| { |
| menuBar.paint(g); |
| } |
| |
| /** |
| * Determines the height of the menubar. |
| * |
| * @return the height of the menu bar |
| */ |
| public int getHeight() |
| { |
| return menuBar.getPreferredSize().height; |
| } |
| |
| /** |
| * Handles mouse events. |
| * |
| * @param ev the mouse event |
| */ |
| public void handleMouseEvent(MouseEvent ev) |
| { |
| Point point = ev.getPoint(); |
| for (int i = 0; i < awtMenuBar.getMenuCount(); i++) |
| { |
| Menu menu = awtMenuBar.getMenu(i); |
| SwingMenuPeer peer = (SwingMenuPeer) menu.getPeer(); |
| int x1 = peer.getX(); |
| int x2 = x1 + peer.getWidth(); |
| if (point.x >= x1 && point.x <= x2) |
| { |
| ev.translatePoint(peer.getX(), peer.getY()); |
| peer.handleMouseEvent(ev); |
| break; |
| } |
| } |
| } |
| |
| /** |
| * Handles mouse motion events. |
| * |
| * @param ev the mouse motion event |
| */ |
| public void handleMouseMotionEvent(MouseEvent ev) |
| { |
| Point point = ev.getPoint(); |
| for (int i = 0; i < awtMenuBar.getMenuCount(); i++) |
| { |
| Menu menu = awtMenuBar.getMenu(i); |
| SwingMenuPeer peer = (SwingMenuPeer) menu.getPeer(); |
| int x1 = peer.getX(); |
| int x2 = x1 + peer.getWidth(); |
| if (point.x >= x1 && point.x <= x2) |
| { |
| ev.translatePoint(peer.getX(), peer.getY()); |
| peer.handleMouseMotionEvent(ev); |
| break; |
| } |
| } |
| } |
| } |