1
22
23 package com.liferay.portal.image;
24
25 import com.liferay.portal.kernel.image.ImageProcessorUtil;
26 import com.liferay.portal.kernel.image.SpriteProcessor;
27 import com.liferay.portal.kernel.log.Log;
28 import com.liferay.portal.kernel.log.LogFactoryUtil;
29 import com.liferay.portal.kernel.util.ArrayUtil;
30 import com.liferay.portal.kernel.util.FileUtil;
31 import com.liferay.portal.kernel.util.PropertiesUtil;
32 import com.liferay.portal.kernel.util.SortedProperties;
33 import com.liferay.portal.kernel.util.StringPool;
34 import com.liferay.portal.kernel.util.StringUtil;
35 import com.liferay.portal.kernel.util.Validator;
36
37 import java.awt.Point;
38 import java.awt.Transparency;
39 import java.awt.image.ColorModel;
40 import java.awt.image.DataBuffer;
41 import java.awt.image.DataBufferByte;
42 import java.awt.image.IndexColorModel;
43 import java.awt.image.Raster;
44 import java.awt.image.RenderedImage;
45 import java.awt.image.SampleModel;
46
47 import java.io.File;
48 import java.io.FileOutputStream;
49 import java.io.IOException;
50
51 import java.util.ArrayList;
52 import java.util.Collections;
53 import java.util.List;
54 import java.util.Properties;
55
56 import javax.imageio.ImageIO;
57
58 import javax.media.jai.JAI;
59 import javax.media.jai.LookupTableJAI;
60 import javax.media.jai.PlanarImage;
61 import javax.media.jai.RasterFactory;
62 import javax.media.jai.TiledImage;
63 import javax.media.jai.operator.FileLoadDescriptor;
64 import javax.media.jai.operator.LookupDescriptor;
65 import javax.media.jai.operator.MosaicDescriptor;
66 import javax.media.jai.operator.TranslateDescriptor;
67
68 import org.geotools.image.ImageWorker;
69
70
76 public class SpriteProcessorImpl implements SpriteProcessor {
77
78 static {
79 System.setProperty("com.sun.media.jai.disableMediaLib", "true");
80 }
81
82 public Properties generate(
83 List<File> images, String spriteFileName,
84 String spritePropertiesFileName, String spritePropertiesRootPath,
85 int maxHeight, int maxWidth, int maxSize)
86 throws IOException {
87
88 if (images.size() < 1) {
89 return null;
90 }
91
92 if (spritePropertiesRootPath.endsWith(StringPool.SLASH) ||
93 spritePropertiesRootPath.endsWith(StringPool.BACK_SLASH)) {
94
95 spritePropertiesRootPath = spritePropertiesRootPath.substring(
96 0, spritePropertiesRootPath.length() - 1);
97 }
98
99 File dir = images.get(0).getParentFile();
100
101 File spritePropertiesFile = new File(
102 dir.toString() + StringPool.SLASH + spritePropertiesFileName);
103
104 boolean build = false;
105
106 long lastModified = 0;
107
108 if (spritePropertiesFile.exists()) {
109 lastModified = spritePropertiesFile.lastModified();
110
111 for (File image : images) {
112 if (image.lastModified() > lastModified) {
113 build = true;
114
115 break;
116 }
117 }
118 }
119 else {
120 build = true;
121 }
122
123 if (!build) {
124 String spritePropertiesString = FileUtil.read(spritePropertiesFile);
125
126 if (Validator.isNull(spritePropertiesString)) {
127 return null;
128 }
129 else {
130 return PropertiesUtil.load(spritePropertiesString);
131 }
132 }
133
134 List<RenderedImage> renderedImages = new ArrayList<RenderedImage>();
135
136 Properties spriteProperties = new SortedProperties();
137
138 float x = 0;
139 float y = 0;
140
141 for (File file : images) {
142 String fileName = file.getName();
143
144 if (file.length() > maxSize) {
145 continue;
146 }
147
148 try {
149 RenderedImage renderedImage = FileLoadDescriptor.create(
150 file.toString(), null, null, null);
151
152 int height = renderedImage.getHeight();
153 int width = renderedImage.getWidth();
154
155 if ((height <= maxHeight) && (width <= maxWidth)) {
156 renderedImage = convert(renderedImage);
157
158 renderedImage = TranslateDescriptor.create(
159 renderedImage, x, y, null, null);
160
161 renderedImages.add(renderedImage);
162
163 String key = StringUtil.replace(
164 file.toString(), StringPool.BACK_SLASH,
165 StringPool.SLASH);
166
167 key = key.substring(
168 spritePropertiesRootPath.toString().length());
169
170 String value = (int)y + "," + height + "," + width;
171
172 spriteProperties.setProperty(key, value);
173
174 y += renderedImage.getHeight();
175 }
176 }
177 catch (Exception e) {
178 if (_log.isWarnEnabled()) {
179 _log.warn("Unable to process " + file);
180 }
181
182 if (_log.isDebugEnabled()) {
183 _log.debug(e, e);
184 }
185 }
186 }
187
188 if (renderedImages.size() <= 1) {
189 renderedImages.clear();
190 spriteProperties.clear();
191 }
192 else {
193
194
196 RenderedImage renderedImage = MosaicDescriptor.create(
197 (RenderedImage[])renderedImages.toArray(
198 new RenderedImage[renderedImages.size()]),
199 MosaicDescriptor.MOSAIC_TYPE_OVERLAY, null, null, null, null,
200 null);
201
202 File spriteFile = new File(
203 dir.toString() + StringPool.SLASH + spriteFileName);
204
205 ImageIO.write(renderedImage, "png", spriteFile);
206
207 if (lastModified > 0) {
208 spriteFile.setLastModified(lastModified);
209 }
210
211 ImageWorker imageWorker = new ImageWorker(renderedImage);
212
213 imageWorker.forceIndexColorModelForGIF(true);
214
215
217 renderedImage = imageWorker.getPlanarImage();
218
219 spriteFile = new File(
220 dir.toString() + StringPool.SLASH +
221 StringUtil.replace(spriteFileName, ".png", ".gif"));
222
223 ImageProcessorUtil.encodeGIF(
224 renderedImage, new FileOutputStream(spriteFile));
225
226 if (lastModified > 0) {
227 spriteFile.setLastModified(lastModified);
228 }
229 }
230
231 FileUtil.write(
232 spritePropertiesFile, PropertiesUtil.toString(spriteProperties));
233
234 if (lastModified > 0) {
235 spritePropertiesFile.setLastModified(lastModified);
236 }
237
238 return spriteProperties;
239 }
240
241 protected RenderedImage convert(RenderedImage renderedImage)
242 throws Exception {
243
244 int height = renderedImage.getHeight();
245 int width = renderedImage.getWidth();
246
247 SampleModel sampleModel = renderedImage.getSampleModel();
248 ColorModel colorModel = renderedImage.getColorModel();
249
250 Raster raster = renderedImage.getData();
251
252 DataBuffer dataBuffer = raster.getDataBuffer();
253
254 if (colorModel instanceof IndexColorModel) {
255 IndexColorModel indexColorModel = (IndexColorModel)colorModel;
256
257 int mapSize = indexColorModel.getMapSize();
258
259 byte[][] data = new byte[4][mapSize];
260
261 indexColorModel.getReds(data[0]);
262 indexColorModel.getGreens(data[1]);
263 indexColorModel.getBlues(data[2]);
264 indexColorModel.getAlphas(data[3]);
265
266 LookupTableJAI lookupTableJAI = new LookupTableJAI(data);
267
268 renderedImage = LookupDescriptor.create(
269 renderedImage, lookupTableJAI, null);
270 }
271 else if (sampleModel.getNumBands() == 2) {
272 List<Byte> bytesList = new ArrayList<Byte>(
273 height * width * _NUM_OF_BANDS);
274
275 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
276
277 for (int i = 0; i < dataBuffer.getSize(); i++) {
278 int mod = (i + 1) % 2;
279
280 int elemPos = i;
281
282 if (mod == 0) {
283 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
284 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
285 }
286
287 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
288
289 if (mod == 0) {
290 Collections.reverse(tempBytesList);
291
292 bytesList.addAll(tempBytesList);
293
294 tempBytesList.clear();
295 }
296 }
297
298 byte[] data = ArrayUtil.toArray(
299 bytesList.toArray(new Byte[bytesList.size()]));
300
301 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
302
303 renderedImage = createRenderedImage(
304 renderedImage, height, width, newDataBuffer);
305 }
306 else if (colorModel.getTransparency() != Transparency.TRANSLUCENT) {
307 List<Byte> bytesList = new ArrayList<Byte>(
308 height * width * _NUM_OF_BANDS);
309
310 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
311
312 for (int i = 0; i < dataBuffer.getSize(); i++) {
313 int mod = (i + 1) % 3;
314
315 int elemPos = i;
316
317 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
318
319 if (mod == 0) {
320 tempBytesList.add((byte)255);
321
322 Collections.reverse(tempBytesList);
323
324 bytesList.addAll(tempBytesList);
325
326 tempBytesList.clear();
327 }
328 }
329
330 byte[] data = ArrayUtil.toArray(
331 bytesList.toArray(new Byte[bytesList.size()]));
332
333 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
334
335 renderedImage = createRenderedImage(
336 renderedImage, height, width, newDataBuffer);
337 }
338
339 return renderedImage;
340 }
341
342 protected RenderedImage createRenderedImage(
343 RenderedImage renderedImage, int height, int width,
344 DataBuffer dataBuffer) {
345
346 SampleModel sampleModel =
347 RasterFactory.createPixelInterleavedSampleModel(
348 DataBuffer.TYPE_BYTE, width, height, _NUM_OF_BANDS);
349 ColorModel colorModel = PlanarImage.createColorModel(sampleModel);
350
351 TiledImage tiledImage = new TiledImage(
352 0, 0, width, height, 0, 0, sampleModel, colorModel);
353
354 Raster raster = RasterFactory.createWritableRaster(
355 sampleModel, dataBuffer, new Point(0, 0));
356
357 tiledImage.setData(raster);
358
359 if (false) {
360 JAI.create("filestore", tiledImage, "test.png", "PNG");
361
362 printImage(renderedImage);
363 printImage(tiledImage);
364 }
365
366 return tiledImage;
367 }
368
369 protected void printImage(RenderedImage renderedImage) {
370 SampleModel sampleModel = renderedImage.getSampleModel();
371
372 int height = renderedImage.getHeight();
373 int width = renderedImage.getWidth();
374 int numOfBands = sampleModel.getNumBands();
375
376 int[] pixels = new int[height * width * numOfBands];
377
378 Raster raster = renderedImage.getData();
379
380 raster.getPixels(0, 0, width, height, pixels);
381
382 int offset = 0;
383
384 for (int h = 0; h < height; h++) {
385 for (int w = 0; w < width; w++) {
386 offset = (h * width * numOfBands) + (w * numOfBands);
387
388 System.out.print("[" + w + ", " + h + "] = ");
389
390 for (int b = 0; b < numOfBands; b++) {
391 System.out.print(pixels[offset + b] + " ");
392 }
393 }
394
395 System.out.println();
396 }
397 }
398
399 private static final int _NUM_OF_BANDS = 4;
400
401 private static Log _log = LogFactoryUtil.getLog(SpriteProcessorImpl.class);
402
403 }