| /* SwingFramePeer.java -- An abstract Swing based peer for AWT frames |
| 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.Frame; |
| import java.awt.Graphics; |
| import java.awt.Insets; |
| import java.awt.MenuBar; |
| import java.awt.Point; |
| import java.awt.event.MouseEvent; |
| import java.awt.peer.FramePeer; |
| |
| /** |
| * An abstract base class for FramePeer implementations based on Swing. |
| * This class provides the ability to display and handle AWT MenuBars that |
| * are based on Swing. |
| * |
| * As a minimum, a subclass must implement all the remaining abstract methods |
| * as well as the following methods: |
| * <ul> |
| * <li>{@link java.awt.peer.ComponentPeer#getLocationOnScreen()}</li> |
| * <li>{@link java.awt.peer.ComponentPeer#getGraphics()}</li> |
| * <li>{@link java.awt.peer.ComponentPeer#createImage(int, int)}</li> |
| * </ul> |
| * |
| * @author Roman Kennke (kennke@aicas.com) |
| */ |
| public abstract class SwingFramePeer |
| extends SwingWindowPeer |
| implements FramePeer |
| { |
| /** |
| * The menu bar to display. |
| */ |
| SwingMenuBarPeer menuBar = null; |
| |
| /** |
| * Creates a new SwingFramePeer. |
| * |
| * @param frame the frame |
| */ |
| public SwingFramePeer(Frame frame) |
| { |
| super(frame); |
| } |
| |
| /** |
| * Sets the menu bar to display in this frame. |
| * |
| * @param mb the menu bar to set |
| */ |
| public void setMenuBar(MenuBar mb) |
| { |
| menuBar = (SwingMenuBarPeer) mb.getPeer(); |
| menuBar.setFramePeer(this); |
| menuBar.setWidth(awtComponent.getWidth()); |
| } |
| |
| /** |
| * Triggers 'heavyweight' painting of the frame. This will paint a menu bar |
| * if present as well as the child components of this frame. |
| * |
| * @param g the graphics context to use for painting |
| */ |
| protected void peerPaint(Graphics g) |
| { |
| super.peerPaint(g); |
| if (menuBar != null) |
| menuBar.peerPaint(g); |
| } |
| |
| /** |
| * Sets the size and location of this frame. This resizes the menubar to fit |
| * within the frame. |
| * |
| * @param x the X coordinate of the screen location |
| * @param y the Y coordinate of the screen location |
| * @param w the width of the frame |
| * @param h the height of the frame |
| */ |
| public void setBounds(int x, int y, int w, int h) |
| { |
| super.setBounds(x, y, w, h); |
| if (menuBar != null) |
| menuBar.setWidth(w); |
| } |
| |
| /** |
| * Calculates the insets of this frame peer. This fetches the insets |
| * from the superclass and adds the insets of the menubar if one is present. |
| * |
| * @return the insets of the frame |
| */ |
| public Insets getInsets() |
| { |
| Insets insets = super.getInsets(); |
| if (menuBar != null) |
| insets.top += menuBar.getHeight(); |
| return insets; |
| } |
| |
| /** |
| * Returns the location of the menu on the screen. This is needed internally |
| * by the {@link SwingMenuBarPeer} in order to determine its screen location. |
| * |
| * @return the location of the menu on the screen |
| */ |
| public Point getMenuLocationOnScreen() |
| { |
| Insets i = super.getInsets(); |
| return new Point(i.top, i.left); |
| } |
| |
| /** |
| * Overridden to provide the ability to handle menus. |
| * |
| * @param ev the mouse event |
| */ |
| protected void handleMouseEvent(MouseEvent ev) |
| { |
| Point p = ev.getPoint(); |
| Insets i = super.getInsets(); |
| if (menuBar != null) |
| { |
| int menuHeight = menuBar.getHeight(); |
| if (p.y >= i.top && p.y <= i.top + menuHeight) |
| menuBar.handleMouseEvent(ev); |
| else |
| { |
| ev.translatePoint(0, -menuHeight); |
| super.handleMouseMotionEvent(ev); |
| } |
| } |
| |
| super.handleMouseEvent(ev); |
| } |
| |
| /** |
| * Overridden to provide the ability to handle menus. |
| * |
| * @param ev the mouse event |
| */ |
| protected void handleMouseMotionEvent(MouseEvent ev) |
| { |
| Point p = ev.getPoint(); |
| Insets i = super.getInsets(); |
| if (menuBar != null) |
| { |
| int menuHeight = menuBar.getHeight(); |
| if (p.y >= i.top && p.y <= i.top + menuHeight) |
| menuBar.handleMouseMotionEvent(ev); |
| else |
| { |
| ev.translatePoint(0, -menuHeight); |
| super.handleMouseMotionEvent(ev); |
| } |
| } |
| |
| super.handleMouseMotionEvent(ev); |
| } |
| } |