2
|
1 |
/*
|
|
2 |
* Copyright 2000-2007 Sun Microsystems, Inc. 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. Sun designates this
|
|
8 |
* particular file as subject to the "Classpath" exception as provided
|
|
9 |
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
|
|
22 |
* CA 95054 USA or visit www.sun.com if you need additional information or
|
|
23 |
* have any questions.
|
|
24 |
*/
|
|
25 |
|
|
26 |
package sun.awt.image;
|
|
27 |
|
|
28 |
import java.awt.AlphaComposite;
|
|
29 |
import java.awt.Color;
|
|
30 |
import java.awt.Component;
|
|
31 |
import java.awt.Font;
|
|
32 |
import java.awt.Graphics;
|
|
33 |
import java.awt.Graphics2D;
|
|
34 |
import java.awt.GraphicsConfiguration;
|
|
35 |
import java.awt.ImageCapabilities;
|
|
36 |
import java.awt.Transparency;
|
|
37 |
import java.awt.image.BufferedImage;
|
|
38 |
import java.awt.image.ColorModel;
|
|
39 |
import java.awt.image.ImageObserver;
|
|
40 |
import java.awt.image.VolatileImage;
|
|
41 |
import java.awt.image.WritableRaster;
|
|
42 |
import sun.java2d.SunGraphics2D;
|
|
43 |
import sun.java2d.SurfaceData;
|
|
44 |
import sun.java2d.SurfaceManagerFactory;
|
|
45 |
|
|
46 |
/**
|
|
47 |
* This class is the base implementation of the VolatileImage
|
|
48 |
* abstract class. The class implements most of the standard Image
|
|
49 |
* methods (width, height, etc.) but delegates all surface management
|
|
50 |
* issues to a platform-specific VolatileSurfaceManager. When a new instance
|
|
51 |
* of SunVolatileImage is created, it automatically creates an
|
|
52 |
* appropriate VolatileSurfaceManager for the GraphicsConfiguration
|
|
53 |
* under which this SunVolatileImage was created.
|
|
54 |
*/
|
|
55 |
public class SunVolatileImage extends VolatileImage {
|
|
56 |
|
|
57 |
protected VolatileSurfaceManager volSurfaceManager;
|
|
58 |
protected Component comp;
|
|
59 |
private GraphicsConfiguration graphicsConfig;
|
|
60 |
private Font defaultFont;
|
|
61 |
private int width, height;
|
|
62 |
|
|
63 |
private SunVolatileImage(Component comp,
|
|
64 |
GraphicsConfiguration graphicsConfig,
|
|
65 |
int width, int height, Object context,
|
|
66 |
int transparency, ImageCapabilities caps)
|
|
67 |
{
|
|
68 |
this.comp = comp;
|
|
69 |
this.graphicsConfig = graphicsConfig;
|
|
70 |
this.width = width;
|
|
71 |
this.height = height;
|
|
72 |
if (!(transparency == Transparency.OPAQUE ||
|
|
73 |
transparency == Transparency.BITMASK ||
|
|
74 |
transparency == Transparency.TRANSLUCENT))
|
|
75 |
{
|
|
76 |
throw new IllegalArgumentException("Unknown transparency type:" +
|
|
77 |
transparency);
|
|
78 |
}
|
|
79 |
this.transparency = transparency;
|
|
80 |
this.volSurfaceManager = createSurfaceManager(context, caps);
|
|
81 |
SurfaceManager.setManager(this, volSurfaceManager);
|
|
82 |
|
|
83 |
// post-construction initialization of the surface manager
|
|
84 |
volSurfaceManager.initialize();
|
|
85 |
// clear the background
|
|
86 |
volSurfaceManager.initContents();
|
|
87 |
}
|
|
88 |
|
|
89 |
private SunVolatileImage(Component comp,
|
|
90 |
GraphicsConfiguration graphicsConfig,
|
|
91 |
int width, int height, Object context,
|
|
92 |
ImageCapabilities caps)
|
|
93 |
{
|
|
94 |
this(comp, graphicsConfig,
|
|
95 |
width, height, context, Transparency.OPAQUE, caps);
|
|
96 |
}
|
|
97 |
|
|
98 |
public SunVolatileImage(Component comp, int width, int height) {
|
|
99 |
this(comp, width, height, null);
|
|
100 |
}
|
|
101 |
|
|
102 |
public SunVolatileImage(Component comp,
|
|
103 |
int width, int height, Object context)
|
|
104 |
{
|
|
105 |
this(comp, comp.getGraphicsConfiguration(),
|
|
106 |
width, height, context, null);
|
|
107 |
}
|
|
108 |
|
|
109 |
public SunVolatileImage(GraphicsConfiguration graphicsConfig,
|
|
110 |
int width, int height, int transparency,
|
|
111 |
ImageCapabilities caps)
|
|
112 |
{
|
|
113 |
this(null, graphicsConfig, width, height, null, transparency, caps);
|
|
114 |
}
|
|
115 |
|
|
116 |
public int getWidth() {
|
|
117 |
return width;
|
|
118 |
}
|
|
119 |
|
|
120 |
public int getHeight() {
|
|
121 |
return height;
|
|
122 |
}
|
|
123 |
|
|
124 |
public GraphicsConfiguration getGraphicsConfig() {
|
|
125 |
return graphicsConfig;
|
|
126 |
}
|
|
127 |
|
|
128 |
public void updateGraphicsConfig() {
|
|
129 |
// If this VImage is associated with a Component, get an updated
|
|
130 |
// graphicsConfig from that component. Otherwise, keep the one
|
|
131 |
// that we were created with
|
|
132 |
if (comp != null) {
|
|
133 |
GraphicsConfiguration gc = comp.getGraphicsConfiguration();
|
|
134 |
if (gc != null) {
|
|
135 |
// Could potentially be null in some failure situations;
|
|
136 |
// better to keep the old non-null value around than to
|
|
137 |
// set graphicsConfig to null
|
|
138 |
graphicsConfig = gc;
|
|
139 |
}
|
|
140 |
}
|
|
141 |
}
|
|
142 |
|
|
143 |
public Component getComponent() {
|
|
144 |
return comp;
|
|
145 |
}
|
|
146 |
|
|
147 |
protected VolatileSurfaceManager createSurfaceManager(Object context,
|
|
148 |
ImageCapabilities caps)
|
|
149 |
{
|
|
150 |
/**
|
|
151 |
* Platform-specific SurfaceManagerFactories will return a
|
|
152 |
* manager suited to acceleration on each platform. But if
|
|
153 |
* the user is asking for a VolatileImage from a BufferedImageGC,
|
|
154 |
* then we need to return the appropriate unaccelerated manager.
|
|
155 |
* Note: this could change in the future; if some platform would
|
|
156 |
* like to accelerate BIGC volatile images, then this special-casing
|
|
157 |
* of the BIGC graphicsConfig should live in platform-specific
|
|
158 |
* code instead.
|
|
159 |
* We do the same for a Printer Device, and if user requested an
|
|
160 |
* unaccelerated VolatileImage by passing the capabilities object.
|
|
161 |
*/
|
|
162 |
if (graphicsConfig instanceof BufferedImageGraphicsConfig ||
|
|
163 |
graphicsConfig instanceof sun.print.PrinterGraphicsConfig ||
|
|
164 |
(caps != null && !caps.isAccelerated()))
|
|
165 |
{
|
|
166 |
return new BufImgVolatileSurfaceManager(this, context);
|
|
167 |
}
|
|
168 |
return SurfaceManagerFactory.createVolatileManager(this, context);
|
|
169 |
}
|
|
170 |
|
|
171 |
private Color getForeground() {
|
|
172 |
if (comp != null) {
|
|
173 |
return comp.getForeground();
|
|
174 |
} else {
|
|
175 |
return Color.black;
|
|
176 |
}
|
|
177 |
}
|
|
178 |
|
|
179 |
private Color getBackground() {
|
|
180 |
if (comp != null) {
|
|
181 |
return comp.getBackground();
|
|
182 |
} else {
|
|
183 |
return Color.white;
|
|
184 |
}
|
|
185 |
}
|
|
186 |
|
|
187 |
private Font getFont() {
|
|
188 |
if (comp != null) {
|
|
189 |
return comp.getFont();
|
|
190 |
} else {
|
|
191 |
if (defaultFont == null) {
|
|
192 |
defaultFont = new Font("Dialog", Font.PLAIN, 12);
|
|
193 |
}
|
|
194 |
return defaultFont;
|
|
195 |
}
|
|
196 |
}
|
|
197 |
|
|
198 |
public Graphics2D createGraphics() {
|
|
199 |
return new SunGraphics2D(volSurfaceManager.getPrimarySurfaceData(),
|
|
200 |
getForeground(),
|
|
201 |
getBackground(),
|
|
202 |
getFont());
|
|
203 |
}
|
|
204 |
|
|
205 |
// Image method implementations
|
|
206 |
public Object getProperty(String name, ImageObserver observer) {
|
|
207 |
if (name == null) {
|
|
208 |
throw new NullPointerException("null property name is not allowed");
|
|
209 |
}
|
|
210 |
return java.awt.Image.UndefinedProperty;
|
|
211 |
}
|
|
212 |
|
|
213 |
public int getWidth(ImageObserver observer) {
|
|
214 |
return getWidth();
|
|
215 |
}
|
|
216 |
|
|
217 |
public int getHeight(ImageObserver observer) {
|
|
218 |
return getHeight();
|
|
219 |
}
|
|
220 |
|
|
221 |
/**
|
|
222 |
* This method creates a BufferedImage intended for use as a "snapshot"
|
|
223 |
* or a backup surface.
|
|
224 |
*/
|
|
225 |
public BufferedImage getBackupImage() {
|
|
226 |
return graphicsConfig.createCompatibleImage(getWidth(), getHeight(),
|
|
227 |
getTransparency());
|
|
228 |
}
|
|
229 |
|
|
230 |
public BufferedImage getSnapshot() {
|
|
231 |
BufferedImage bi = getBackupImage();
|
|
232 |
Graphics2D g = bi.createGraphics();
|
|
233 |
g.setComposite(AlphaComposite.Src);
|
|
234 |
g.drawImage(this, 0, 0, null);
|
|
235 |
g.dispose();
|
|
236 |
return bi;
|
|
237 |
}
|
|
238 |
|
|
239 |
public int validate(GraphicsConfiguration gc) {
|
|
240 |
return volSurfaceManager.validate(gc);
|
|
241 |
}
|
|
242 |
|
|
243 |
public boolean contentsLost() {
|
|
244 |
return volSurfaceManager.contentsLost();
|
|
245 |
}
|
|
246 |
|
|
247 |
public ImageCapabilities getCapabilities() {
|
|
248 |
return volSurfaceManager.getCapabilities(graphicsConfig);
|
|
249 |
}
|
|
250 |
}
|