1 /*
2 * Copyright (c) 1998, 2008, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
51 * asynchronous production of a RenderableImage. The size of the
52 * ImageConsumer is determined by the scale factor of the usr2dev
53 * transform in the RenderContext. If the RenderContext is null, the
54 * default rendering of the RenderableImage is used. This class
55 * implements an asynchronous production that produces the image in
56 * one thread at one resolution. This class may be subclassed to
57 * implement versions that will render the image using several
58 * threads. These threads could render either the same image at
59 * progressively better quality, or different sections of the image at
60 * a single resolution.
61 */
62 public class RenderableImageProducer implements ImageProducer, Runnable {
63
64 /** The RenderableImage source for the producer. */
65 RenderableImage rdblImage;
66
67 /** The RenderContext to use for producing the image. */
68 RenderContext rc;
69
70 /** A Vector of image consumers. */
71 Vector ics = new Vector();
72
73 /**
74 * Constructs a new RenderableImageProducer from a RenderableImage
75 * and a RenderContext.
76 *
77 * @param rdblImage the RenderableImage to be rendered.
78 * @param rc the RenderContext to use for producing the pixels.
79 */
80 public RenderableImageProducer(RenderableImage rdblImage,
81 RenderContext rc) {
82 this.rdblImage = rdblImage;
83 this.rc = rc;
84 }
85
86 /**
87 * Sets a new RenderContext to use for the next startProduction() call.
88 *
89 * @param rc the new RenderContext.
90 */
91 public synchronized void setRenderContext(RenderContext rc) {
160 if (rc != null) {
161 rdrdImage = rdblImage.createRendering(rc);
162 } else {
163 rdrdImage = rdblImage.createDefaultRendering();
164 }
165
166 // And its ColorModel
167 ColorModel colorModel = rdrdImage.getColorModel();
168 Raster raster = rdrdImage.getData();
169 SampleModel sampleModel = raster.getSampleModel();
170 DataBuffer dataBuffer = raster.getDataBuffer();
171
172 if (colorModel == null) {
173 colorModel = ColorModel.getRGBdefault();
174 }
175 int minX = raster.getMinX();
176 int minY = raster.getMinY();
177 int width = raster.getWidth();
178 int height = raster.getHeight();
179
180 Enumeration icList;
181 ImageConsumer ic;
182 // Set up the ImageConsumers
183 icList = ics.elements();
184 while (icList.hasMoreElements()) {
185 ic = (ImageConsumer)icList.nextElement();
186 ic.setDimensions(width,height);
187 ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT |
188 ImageConsumer.COMPLETESCANLINES |
189 ImageConsumer.SINGLEPASS |
190 ImageConsumer.SINGLEFRAME);
191 }
192
193 // Get RGB pixels from the raster scanline by scanline and
194 // send to consumers.
195 int pix[] = new int[width];
196 int i,j;
197 int numBands = sampleModel.getNumBands();
198 int tmpPixel[] = new int[numBands];
199 for (j = 0; j < height; j++) {
200 for(i = 0; i < width; i++) {
201 sampleModel.getPixel(i, j, tmpPixel, dataBuffer);
202 pix[i] = colorModel.getDataElement(tmpPixel, 0);
203 }
204 // Now send the scanline to the Consumers
205 icList = ics.elements();
206 while (icList.hasMoreElements()) {
207 ic = (ImageConsumer)icList.nextElement();
208 ic.setPixels(0, j, width, 1, colorModel, pix, 0, width);
209 }
210 }
211
212 // Now tell the consumers we're done.
213 icList = ics.elements();
214 while (icList.hasMoreElements()) {
215 ic = (ImageConsumer)icList.nextElement();
216 ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
217 }
218 }
219 }
|
1 /*
2 * Copyright (c) 1998, 2014, Oracle and/or its affiliates. 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. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
51 * asynchronous production of a RenderableImage. The size of the
52 * ImageConsumer is determined by the scale factor of the usr2dev
53 * transform in the RenderContext. If the RenderContext is null, the
54 * default rendering of the RenderableImage is used. This class
55 * implements an asynchronous production that produces the image in
56 * one thread at one resolution. This class may be subclassed to
57 * implement versions that will render the image using several
58 * threads. These threads could render either the same image at
59 * progressively better quality, or different sections of the image at
60 * a single resolution.
61 */
62 public class RenderableImageProducer implements ImageProducer, Runnable {
63
64 /** The RenderableImage source for the producer. */
65 RenderableImage rdblImage;
66
67 /** The RenderContext to use for producing the image. */
68 RenderContext rc;
69
70 /** A Vector of image consumers. */
71 Vector<ImageConsumer> ics = new Vector<>();
72
73 /**
74 * Constructs a new RenderableImageProducer from a RenderableImage
75 * and a RenderContext.
76 *
77 * @param rdblImage the RenderableImage to be rendered.
78 * @param rc the RenderContext to use for producing the pixels.
79 */
80 public RenderableImageProducer(RenderableImage rdblImage,
81 RenderContext rc) {
82 this.rdblImage = rdblImage;
83 this.rc = rc;
84 }
85
86 /**
87 * Sets a new RenderContext to use for the next startProduction() call.
88 *
89 * @param rc the new RenderContext.
90 */
91 public synchronized void setRenderContext(RenderContext rc) {
160 if (rc != null) {
161 rdrdImage = rdblImage.createRendering(rc);
162 } else {
163 rdrdImage = rdblImage.createDefaultRendering();
164 }
165
166 // And its ColorModel
167 ColorModel colorModel = rdrdImage.getColorModel();
168 Raster raster = rdrdImage.getData();
169 SampleModel sampleModel = raster.getSampleModel();
170 DataBuffer dataBuffer = raster.getDataBuffer();
171
172 if (colorModel == null) {
173 colorModel = ColorModel.getRGBdefault();
174 }
175 int minX = raster.getMinX();
176 int minY = raster.getMinY();
177 int width = raster.getWidth();
178 int height = raster.getHeight();
179
180 Enumeration<ImageConsumer> icList;
181 ImageConsumer ic;
182 // Set up the ImageConsumers
183 icList = ics.elements();
184 while (icList.hasMoreElements()) {
185 ic = icList.nextElement();
186 ic.setDimensions(width,height);
187 ic.setHints(ImageConsumer.TOPDOWNLEFTRIGHT |
188 ImageConsumer.COMPLETESCANLINES |
189 ImageConsumer.SINGLEPASS |
190 ImageConsumer.SINGLEFRAME);
191 }
192
193 // Get RGB pixels from the raster scanline by scanline and
194 // send to consumers.
195 int pix[] = new int[width];
196 int i,j;
197 int numBands = sampleModel.getNumBands();
198 int tmpPixel[] = new int[numBands];
199 for (j = 0; j < height; j++) {
200 for(i = 0; i < width; i++) {
201 sampleModel.getPixel(i, j, tmpPixel, dataBuffer);
202 pix[i] = colorModel.getDataElement(tmpPixel, 0);
203 }
204 // Now send the scanline to the Consumers
205 icList = ics.elements();
206 while (icList.hasMoreElements()) {
207 ic = icList.nextElement();
208 ic.setPixels(0, j, width, 1, colorModel, pix, 0, width);
209 }
210 }
211
212 // Now tell the consumers we're done.
213 icList = ics.elements();
214 while (icList.hasMoreElements()) {
215 ic = icList.nextElement();
216 ic.imageComplete(ImageConsumer.STATICIMAGEDONE);
217 }
218 }
219 }
|