1 /*
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8  * particular file as subject to the "Classpath" exception as provided
9  * by Oracle in the LICENSE file that accompanied this code.
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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).
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17  * You should have received a copy of the GNU General Public License version
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24  */
25 
26 
27 package sun.awt.X11;
28 
29 import java.awt.Component;
30 import java.awt.Graphics;
31 
32 import sun.awt.RepaintArea;
33 
34 /**
35  * The <code>RepaintArea</code> is a geometric construct created for the
36  * purpose of holding the geometry of several coalesced paint events.
37  * This geometry is accessed synchronously, although it is written such
38  * that painting may still be executed asynchronously.
39  *
40  * @author      Eric Hawkes
41  */
42 final class XRepaintArea extends RepaintArea {
43 
44     /**
45      * Calls <code>Component.update(Graphics)</code> with given Graphics.
46      */
updateComponent(Component comp, Graphics g)47     protected void updateComponent(Component comp, Graphics g) {
48         if (comp != null) {
49             // We don't call peer.paintPeer() here, because we shouldn't paint
50             // native component when processing UPDATE events.
51             super.updateComponent(comp, g);
52         }
53     }
54 
55     /**
56      * Calls <code>Component.paint(Graphics)</code> with given Graphics.
57      */
paintComponent(Component comp, Graphics g)58     protected void paintComponent(Component comp, Graphics g) {
59         if (comp != null) {
60             final XComponentPeer peer = (XComponentPeer) comp.getPeer();
61             if (peer != null) {
62                 peer.paintPeer(g);
63             }
64             super.paintComponent(comp, g);
65         }
66     }
67 }
68