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GraphicsCallback.java
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146 lines (133 loc) · 5.05 KB
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/*
* Copyright (c) 1999, 2000, 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 java.awt;
import java.awt.peer.LightweightPeer;
import sun.awt.SunGraphicsCallback;
abstract class GraphicsCallback extends SunGraphicsCallback {
static final class PaintCallback extends GraphicsCallback {
private static PaintCallback instance = new PaintCallback();
private PaintCallback() {}
public void run(Component comp, Graphics cg) {
comp.paint(cg);
}
static PaintCallback getInstance() {
return instance;
}
}
static final class PrintCallback extends GraphicsCallback {
private static PrintCallback instance = new PrintCallback();
private PrintCallback() {}
public void run(Component comp, Graphics cg) {
comp.print(cg);
}
static PrintCallback getInstance() {
return instance;
}
}
static final class PaintAllCallback extends GraphicsCallback {
private static PaintAllCallback instance = new PaintAllCallback();
private PaintAllCallback() {}
public void run(Component comp, Graphics cg) {
comp.paintAll(cg);
}
static PaintAllCallback getInstance() {
return instance;
}
}
static final class PrintAllCallback extends GraphicsCallback {
private static PrintAllCallback instance = new PrintAllCallback();
private PrintAllCallback() {}
public void run(Component comp, Graphics cg) {
comp.printAll(cg);
}
static PrintAllCallback getInstance() {
return instance;
}
}
static final class PeerPaintCallback extends GraphicsCallback {
private static PeerPaintCallback instance = new PeerPaintCallback();
private PeerPaintCallback() {}
public void run(Component comp, Graphics cg) {
comp.validate();
if (comp.peer instanceof LightweightPeer) {
comp.lightweightPaint(cg);
} else {
comp.peer.paint(cg);
}
}
static PeerPaintCallback getInstance() {
return instance;
}
}
static final class PeerPrintCallback extends GraphicsCallback {
private static PeerPrintCallback instance = new PeerPrintCallback();
private PeerPrintCallback() {}
public void run(Component comp, Graphics cg) {
comp.validate();
if (comp.peer instanceof LightweightPeer) {
comp.lightweightPrint(cg);
} else {
comp.peer.print(cg);
}
}
static PeerPrintCallback getInstance() {
return instance;
}
}
static final class PaintHeavyweightComponentsCallback
extends GraphicsCallback
{
private static PaintHeavyweightComponentsCallback instance =
new PaintHeavyweightComponentsCallback();
private PaintHeavyweightComponentsCallback() {}
public void run(Component comp, Graphics cg) {
if (comp.peer instanceof LightweightPeer) {
comp.paintHeavyweightComponents(cg);
} else {
comp.paintAll(cg);
}
}
static PaintHeavyweightComponentsCallback getInstance() {
return instance;
}
}
static final class PrintHeavyweightComponentsCallback
extends GraphicsCallback
{
private static PrintHeavyweightComponentsCallback instance =
new PrintHeavyweightComponentsCallback();
private PrintHeavyweightComponentsCallback() {}
public void run(Component comp, Graphics cg) {
if (comp.peer instanceof LightweightPeer) {
comp.printHeavyweightComponents(cg);
} else {
comp.printAll(cg);
}
}
static PrintHeavyweightComponentsCallback getInstance() {
return instance;
}
}
}