1 /* 2 * Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 27 package sun.lwawt; 28 29 import sun.awt.RepaintArea; 30 31 import java.awt.Component; 32 import java.awt.Graphics; 33 34 /** 35 * @author Sergey Bylokhov 36 */ 37 final class LWRepaintArea extends RepaintArea { 38 39 @Override 40 protected void updateComponent(final Component comp, final Graphics g) { 41 if (comp != null) { 42 super.updateComponent(comp, g); 43 flushBuffers((LWComponentPeer) comp.getPeer()); 44 } 45 } 46 47 @Override 48 protected void paintComponent(final Component comp, final Graphics g) { 49 if (comp != null) { 50 final LWComponentPeer peer = (LWComponentPeer) comp.getPeer(); 51 if (peer != null) { 52 peer.paintPeer(g); 53 } 54 super.paintComponent(comp, g); 55 flushBuffers(peer); 56 } 57 } 58 59 private static void flushBuffers(final LWComponentPeer peer) { 60 if (peer != null) { 61 if (!peer.getWindowPeerOrSelf().isOpaque()) { 62 peer.flushOffscreenGraphics(); 63 } 64 peer.flushOnscreenGraphics(); 65 } 66 } 67 }