| /* |
| * Copyright (c) 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; |
| |
| import java.awt.Component; |
| import java.awt.Container; |
| import java.awt.Rectangle; |
| import java.awt.event.PaintEvent; |
| import java.security.AccessController; |
| import sun.awt.AppContext; |
| import sun.awt.SunToolkit; |
| import sun.awt.event.IgnorePaintEvent; |
| import sun.security.action.GetBooleanAction; |
| import sun.security.action.GetPropertyAction; |
| |
| /** |
| * Swing's PaintEventDispatcher. If the component specified by the PaintEvent |
| * is a top level Swing component (JFrame, JWindow, JDialog, JApplet), this |
| * will forward the request to the RepaintManager for eventual painting. |
| * |
| */ |
| class SwingPaintEventDispatcher extends sun.awt.PaintEventDispatcher { |
| private static final boolean SHOW_FROM_DOUBLE_BUFFER; |
| private static final boolean ERASE_BACKGROUND; |
| |
| static { |
| SHOW_FROM_DOUBLE_BUFFER = "true".equals(AccessController.doPrivileged( |
| new GetPropertyAction("swing.showFromDoubleBuffer", "true"))); |
| ERASE_BACKGROUND = AccessController.doPrivileged( |
| new GetBooleanAction("swing.nativeErase")); |
| } |
| |
| public PaintEvent createPaintEvent(Component component, int x, int y, |
| int w, int h) { |
| if (component instanceof RootPaneContainer) { |
| AppContext appContext = SunToolkit.targetToAppContext(component); |
| RepaintManager rm = RepaintManager.currentManager(appContext); |
| if (!SHOW_FROM_DOUBLE_BUFFER || |
| !rm.show((Container)component, x, y, w, h)) { |
| rm.nativeAddDirtyRegion(appContext, (Container)component, |
| x, y, w, h); |
| } |
| // For backward compatibility generate an empty paint |
| // event. Not doing this broke parts of Netbeans. |
| return new IgnorePaintEvent(component, PaintEvent.PAINT, |
| new Rectangle(x, y, w, h)); |
| } |
| else if (component instanceof SwingHeavyWeight) { |
| AppContext appContext = SunToolkit.targetToAppContext(component); |
| RepaintManager rm = RepaintManager.currentManager(appContext); |
| rm.nativeAddDirtyRegion(appContext, (Container)component, |
| x, y, w, h); |
| return new IgnorePaintEvent(component, PaintEvent.PAINT, |
| new Rectangle(x, y, w, h)); |
| } |
| return super.createPaintEvent(component, x, y, w, h); |
| } |
| |
| public boolean shouldDoNativeBackgroundErase(Component c) { |
| return ERASE_BACKGROUND || !(c instanceof RootPaneContainer); |
| } |
| |
| public boolean queueSurfaceDataReplacing(Component c, Runnable r) { |
| if (c instanceof RootPaneContainer) { |
| AppContext appContext = SunToolkit.targetToAppContext(c); |
| RepaintManager.currentManager(appContext). |
| nativeQueueSurfaceDataRunnable(appContext, c, r); |
| return true; |
| } |
| return super.queueSurfaceDataReplacing(c, r); |
| } |
| } |