1/*
2 * Copyright (c) 2003, 2015, 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
27package sun.awt.X11;
28
29import java.awt.Component;
30import java.awt.Graphics;
31
32import sun.awt.AWTAccessor;
33import sun.awt.RepaintArea;
34
35/**
36 * The {@code RepaintArea} is a geometric construct created for the
37 * purpose of holding the geometry of several coalesced paint events.
38 * This geometry is accessed synchronously, although it is written such
39 * that painting may still be executed asynchronously.
40 *
41 * @author      Eric Hawkes
42 */
43final class XRepaintArea extends RepaintArea {
44
45    /**
46     * Calls {@code Component.update(Graphics)} with given Graphics.
47     */
48    protected void updateComponent(Component comp, Graphics g) {
49        if (comp != null) {
50            // We don't call peer.paintPeer() here, because we shouldn't paint
51            // native component when processing UPDATE events.
52            super.updateComponent(comp, g);
53        }
54    }
55
56    /**
57     * Calls {@code Component.paint(Graphics)} with given Graphics.
58     */
59    protected void paintComponent(Component comp, Graphics g) {
60        if (comp != null) {
61            final XComponentPeer peer = AWTAccessor.getComponentAccessor()
62                                                   .getPeer(comp);
63            if (peer != null) {
64                peer.paintPeer(g);
65            }
66            super.paintComponent(comp, g);
67        }
68    }
69}
70