| /* |
| * Copyright 1995-2005 Sun Microsystems, Inc. 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. Sun designates this |
| * particular file as subject to the "Classpath" exception as provided |
| * by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| * CA 95054 USA or visit www.sun.com if you need additional information or |
| * have any questions. |
| */ |
| package sun.awt.motif; |
| |
| import java.awt.*; |
| import java.awt.peer.*; |
| import sun.awt.DisplayChangedListener; |
| import sun.awt.X11GraphicsConfig; |
| import sun.awt.X11GraphicsDevice; |
| import sun.awt.X11GraphicsEnvironment; |
| |
| class MCanvasPeer extends MComponentPeer implements CanvasPeer, |
| DisplayChangedListener { |
| |
| native void create(MComponentPeer parent); |
| private static native void initIDs(); |
| static { |
| initIDs(); |
| } |
| |
| MCanvasPeer() {} |
| |
| MCanvasPeer(Component target) { |
| super(target); |
| } |
| |
| MCanvasPeer(Component target, Object arg) { |
| super(target, arg); |
| } |
| |
| /* --- DisplayChangedListener Stuff --- */ |
| public void displayChanged() {} |
| public void paletteChanged() {} |
| native void resetTargetGC(Component target); |
| |
| /* |
| * Called when the Window this |
| * Canvas is on is moved onto another Xinerama screen. |
| * |
| * Canvases can be created with a non-defulat GraphicsConfiguration. The |
| * GraphicsConfiguration needs to be changed to one on the new screen, |
| * preferably with the same visual ID. |
| * |
| * Up-called for other windows peer instances (WPanelPeer, WWindowPeer). |
| * |
| * Should only be called from the event thread. |
| */ |
| public void displayChanged(int screenNum) { |
| resetLocalGC(screenNum); |
| resetTargetGC(target); /* call Canvas.setGCFromPeer() via native */ |
| } |
| |
| /* Set graphicsConfig to a GraphicsConfig with the same visual on the new |
| * screen, which should be easy in Xinerama mode. |
| * |
| * Should only be called from displayChanged(), and therefore only from |
| * the event thread. |
| */ |
| void resetLocalGC(int screenNum) { |
| // Opt: Only need to do if we're not using the default GC |
| if (graphicsConfig != null) { |
| X11GraphicsConfig parentgc; |
| // save vis id of current gc |
| int visual = graphicsConfig.getVisual(); |
| |
| X11GraphicsDevice newDev = (X11GraphicsDevice) GraphicsEnvironment. |
| getLocalGraphicsEnvironment(). |
| getScreenDevices()[screenNum]; |
| |
| for (int i = 0; i < newDev.getNumConfigs(screenNum); i++) { |
| if (visual == newDev.getConfigVisualId(i, screenNum)) { |
| // use that |
| graphicsConfig = (X11GraphicsConfig)newDev.getConfigurations()[i]; |
| break; |
| } |
| } |
| // just in case... |
| if (graphicsConfig == null) { |
| graphicsConfig = (X11GraphicsConfig) GraphicsEnvironment. |
| getLocalGraphicsEnvironment(). |
| getScreenDevices()[screenNum]. |
| getDefaultConfiguration(); |
| } |
| } |
| } |
| |
| protected boolean shouldFocusOnClick() { |
| // Canvas should always be able to be focused by mouse clicks. |
| return true; |
| } |
| } |