01: /*
02: * @(#)OffScreenImageSource.java 1.19 06/10/10
03: *
04: * Copyright 1990-2006 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER
06: *
07: * This program is free software; you can redistribute it and/or
08: * modify it under the terms of the GNU General Public License version
09: * 2 only, as published by the Free Software Foundation.
10: *
11: * This program is distributed in the hope that it will be useful, but
12: * WITHOUT ANY WARRANTY; without even the implied warranty of
13: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14: * General Public License version 2 for more details (a copy is
15: * included at /legal/license.txt).
16: *
17: * You should have received a copy of the GNU General Public License
18: * version 2 along with this work; if not, write to the Free Software
19: * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
20: * 02110-1301 USA
21: *
22: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
23: * Clara, CA 95054 or visit www.sun.com if you need additional
24: * information or have any questions.
25: *
26: */
27:
28: package sun.awt.image;
29:
30: import java.util.Hashtable;
31: import java.awt.Component;
32: import java.awt.image.ImageConsumer;
33: import java.awt.image.ImageProducer;
34: import java.awt.image.ColorModel;
35:
36: public class OffScreenImageSource implements ImageProducer {
37: Component target;
38: int width;
39: int height;
40: ImageRepresentation baseIR;
41:
42: public OffScreenImageSource(Component c, int w, int h) {
43: target = c;
44: width = w;
45: height = h;
46: }
47:
48: void setImageRep(ImageRepresentation ir) {
49: baseIR = ir;
50: }
51:
52: public ImageRepresentation getImageRep() {
53: return baseIR;
54: }
55:
56: // We can only have one consumer since we immediately return the data...
57: private ImageConsumer theConsumer;
58:
59: public synchronized void addConsumer(ImageConsumer ic) {
60: theConsumer = ic;
61: produce();
62: }
63:
64: public synchronized boolean isConsumer(ImageConsumer ic) {
65: return (ic == theConsumer);
66: }
67:
68: public synchronized void removeConsumer(ImageConsumer ic) {
69: if (theConsumer == ic) {
70: theConsumer = null;
71: }
72: }
73:
74: public void startProduction(ImageConsumer ic) {
75: addConsumer(ic);
76: }
77:
78: public void requestTopDownLeftRightResend(ImageConsumer ic) {
79: }
80:
81: private native void sendPixels();
82:
83: private void produce() {
84: if (theConsumer != null) {
85: theConsumer.setDimensions(width, height);
86: }
87: if (theConsumer != null) {
88: theConsumer.setProperties(new Hashtable());
89: }
90: sendPixels();
91: if (theConsumer != null) {
92: theConsumer.imageComplete(ImageConsumer.SINGLEFRAMEDONE);
93: }
94: }
95: }
|