1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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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).
16  *
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19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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24  */
25 
26 
27 package sun.lwawt;
28 
29 import java.awt.Component;
30 import java.awt.Graphics;
31 
32 import sun.awt.AWTAccessor;
33 import sun.awt.RepaintArea;
34 
35 /**
36  * Emulates appearance of heavyweight components before call of the user code.
37  *
38  * @author Sergey Bylokhov
39  */
40 final class LWRepaintArea extends RepaintArea {
41 
42     @Override
updateComponent(final Component comp, final Graphics g)43     protected void updateComponent(final Component comp, final Graphics g) {
44         // We shouldn't paint native component as a result of UPDATE events,
45         // just flush onscreen back-buffer.
46         if (comp != null) {
47             super.updateComponent(comp, g);
48             LWComponentPeer.flushOnscreenGraphics();
49         }
50     }
51 
52     @Override
paintComponent(final Component comp, final Graphics g)53     protected void paintComponent(final Component comp, final Graphics g) {
54         if (comp != null) {
55             Object peer = AWTAccessor.getComponentAccessor().getPeer(comp);
56             if (peer != null) {
57                 ((LWComponentPeer<?, ?>) peer).paintPeer(g);
58             }
59             super.paintComponent(comp, g);
60             LWComponentPeer.flushOnscreenGraphics();
61         }
62     }
63 }
64