1
14
15 package com.liferay.portal.image;
16
17 import com.liferay.portal.kernel.image.ImageProcessorUtil;
18 import com.liferay.portal.kernel.image.SpriteProcessor;
19 import com.liferay.portal.kernel.log.Log;
20 import com.liferay.portal.kernel.log.LogFactoryUtil;
21 import com.liferay.portal.kernel.util.ArrayUtil;
22 import com.liferay.portal.kernel.util.FileUtil;
23 import com.liferay.portal.kernel.util.PropertiesUtil;
24 import com.liferay.portal.kernel.util.SortedProperties;
25 import com.liferay.portal.kernel.util.StringPool;
26 import com.liferay.portal.kernel.util.StringUtil;
27 import com.liferay.portal.kernel.util.Validator;
28
29 import java.awt.Point;
30 import java.awt.Transparency;
31 import java.awt.image.ColorModel;
32 import java.awt.image.DataBuffer;
33 import java.awt.image.DataBufferByte;
34 import java.awt.image.IndexColorModel;
35 import java.awt.image.Raster;
36 import java.awt.image.RenderedImage;
37 import java.awt.image.SampleModel;
38
39 import java.io.File;
40 import java.io.FileInputStream;
41 import java.io.FileOutputStream;
42 import java.io.IOException;
43
44 import java.util.ArrayList;
45 import java.util.Collections;
46 import java.util.List;
47 import java.util.Properties;
48
49 import javax.imageio.ImageIO;
50
51 import javax.media.jai.JAI;
52 import javax.media.jai.LookupTableJAI;
53 import javax.media.jai.PlanarImage;
54 import javax.media.jai.RasterFactory;
55 import javax.media.jai.TiledImage;
56 import javax.media.jai.operator.LookupDescriptor;
57 import javax.media.jai.operator.MosaicDescriptor;
58 import javax.media.jai.operator.TranslateDescriptor;
59
60 import org.geotools.image.ImageWorker;
61
62
67 public class SpriteProcessorImpl implements SpriteProcessor {
68
69 static {
70 System.setProperty("com.sun.media.jai.disableMediaLib", "true");
71 }
72
73 public Properties generate(
74 List<File> images, String spriteFileName,
75 String spritePropertiesFileName, String spritePropertiesRootPath,
76 int maxHeight, int maxWidth, int maxSize)
77 throws IOException {
78
79 if (images.size() < 1) {
80 return null;
81 }
82
83 if (spritePropertiesRootPath.endsWith(StringPool.SLASH) ||
84 spritePropertiesRootPath.endsWith(StringPool.BACK_SLASH)) {
85
86 spritePropertiesRootPath = spritePropertiesRootPath.substring(
87 0, spritePropertiesRootPath.length() - 1);
88 }
89
90 File dir = images.get(0).getParentFile();
91
92 File spritePropertiesFile = new File(
93 dir.toString() + StringPool.SLASH + spritePropertiesFileName);
94
95 boolean build = false;
96
97 long lastModified = 0;
98
99 if (spritePropertiesFile.exists()) {
100 lastModified = spritePropertiesFile.lastModified();
101
102 for (File image : images) {
103 if (image.lastModified() > lastModified) {
104 build = true;
105
106 break;
107 }
108 }
109 }
110 else {
111 build = true;
112 }
113
114 if (!build) {
115 String spritePropertiesString = FileUtil.read(spritePropertiesFile);
116
117 if (Validator.isNull(spritePropertiesString)) {
118 return null;
119 }
120 else {
121 return PropertiesUtil.load(spritePropertiesString);
122 }
123 }
124
125 List<RenderedImage> renderedImages = new ArrayList<RenderedImage>();
126
127 Properties spriteProperties = new SortedProperties();
128
129 float x = 0;
130 float y = 0;
131
132 for (File file : images) {
133 if (file.length() > maxSize) {
134 continue;
135 }
136
137 FileInputStream fis = new FileInputStream(file);
138
139 try {
140 RenderedImage renderedImage = ImageIO.read(fis);
141
142 int height = renderedImage.getHeight();
143 int width = renderedImage.getWidth();
144
145 if ((height <= maxHeight) && (width <= maxWidth)) {
146 renderedImage = convert(renderedImage);
147
148 renderedImage = TranslateDescriptor.create(
149 renderedImage, x, y, null, null);
150
151 renderedImages.add(renderedImage);
152
153 String key = StringUtil.replace(
154 file.toString(), StringPool.BACK_SLASH,
155 StringPool.SLASH);
156
157 key = key.substring(
158 spritePropertiesRootPath.toString().length());
159
160 String value = (int)y + "," + height + "," + width;
161
162 spriteProperties.setProperty(key, value);
163
164 y += renderedImage.getHeight();
165 }
166 }
167 catch (Exception e) {
168 if (_log.isWarnEnabled()) {
169 _log.warn("Unable to process " + file);
170 }
171
172 if (_log.isDebugEnabled()) {
173 _log.debug(e, e);
174 }
175 }
176 finally {
177 fis.close();
178 }
179 }
180
181 if (renderedImages.size() <= 1) {
182 renderedImages.clear();
183 spriteProperties.clear();
184 }
185 else {
186
187
189 RenderedImage renderedImage = MosaicDescriptor.create(
190 renderedImages.toArray(
191 new RenderedImage[renderedImages.size()]),
192 MosaicDescriptor.MOSAIC_TYPE_OVERLAY, null, null, null, null,
193 null);
194
195 File spriteFile = new File(
196 dir.toString() + StringPool.SLASH + spriteFileName);
197
198 ImageIO.write(renderedImage, "png", spriteFile);
199
200 if (lastModified > 0) {
201 spriteFile.setLastModified(lastModified);
202 }
203
204 ImageWorker imageWorker = new ImageWorker(renderedImage);
205
206 imageWorker.forceIndexColorModelForGIF(true);
207
208
210 renderedImage = imageWorker.getPlanarImage();
211
212 spriteFile = new File(
213 dir.toString() + StringPool.SLASH +
214 StringUtil.replace(spriteFileName, ".png", ".gif"));
215
216 FileOutputStream fos = new FileOutputStream(spriteFile);
217
218 try {
219 ImageProcessorUtil.encodeGIF(renderedImage, fos);
220 }
221 finally {
222 fos.close();
223 }
224
225 if (lastModified > 0) {
226 spriteFile.setLastModified(lastModified);
227 }
228 }
229
230 FileUtil.write(
231 spritePropertiesFile, PropertiesUtil.toString(spriteProperties));
232
233 if (lastModified > 0) {
234 spritePropertiesFile.setLastModified(lastModified);
235 }
236
237 return spriteProperties;
238 }
239
240 protected RenderedImage convert(RenderedImage renderedImage)
241 throws Exception {
242
243 int height = renderedImage.getHeight();
244 int width = renderedImage.getWidth();
245
246 SampleModel sampleModel = renderedImage.getSampleModel();
247 ColorModel colorModel = renderedImage.getColorModel();
248
249 Raster raster = renderedImage.getData();
250
251 DataBuffer dataBuffer = raster.getDataBuffer();
252
253 if (colorModel instanceof IndexColorModel) {
254 IndexColorModel indexColorModel = (IndexColorModel)colorModel;
255
256 int mapSize = indexColorModel.getMapSize();
257
258 byte[][] data = new byte[4][mapSize];
259
260 indexColorModel.getReds(data[0]);
261 indexColorModel.getGreens(data[1]);
262 indexColorModel.getBlues(data[2]);
263 indexColorModel.getAlphas(data[3]);
264
265 LookupTableJAI lookupTableJAI = new LookupTableJAI(data);
266
267 renderedImage = LookupDescriptor.create(
268 renderedImage, lookupTableJAI, null);
269 }
270 else if (sampleModel.getNumBands() == 2) {
271 List<Byte> bytesList = new ArrayList<Byte>(
272 height * width * _NUM_OF_BANDS);
273
274 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
275
276 for (int i = 0; i < dataBuffer.getSize(); i++) {
277 int mod = (i + 1) % 2;
278
279 int elemPos = i;
280
281 if (mod == 0) {
282 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
283 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
284 }
285
286 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
287
288 if (mod == 0) {
289 Collections.reverse(tempBytesList);
290
291 bytesList.addAll(tempBytesList);
292
293 tempBytesList.clear();
294 }
295 }
296
297 byte[] data = ArrayUtil.toArray(
298 bytesList.toArray(new Byte[bytesList.size()]));
299
300 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
301
302 renderedImage = createRenderedImage(
303 renderedImage, height, width, newDataBuffer);
304 }
305 else if (colorModel.getTransparency() != Transparency.TRANSLUCENT) {
306 List<Byte> bytesList = new ArrayList<Byte>(
307 height * width * _NUM_OF_BANDS);
308
309 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
310
311 for (int i = 0; i < dataBuffer.getSize(); i++) {
312 int mod = (i + 1) % 3;
313
314 int elemPos = i;
315
316 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
317
318 if (mod == 0) {
319 tempBytesList.add((byte)255);
320
321 Collections.reverse(tempBytesList);
322
323 bytesList.addAll(tempBytesList);
324
325 tempBytesList.clear();
326 }
327 }
328
329 byte[] data = ArrayUtil.toArray(
330 bytesList.toArray(new Byte[bytesList.size()]));
331
332 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
333
334 renderedImage = createRenderedImage(
335 renderedImage, height, width, newDataBuffer);
336 }
337
338 return renderedImage;
339 }
340
341 protected RenderedImage createRenderedImage(
342 RenderedImage renderedImage, int height, int width,
343 DataBuffer dataBuffer) {
344
345 SampleModel sampleModel =
346 RasterFactory.createPixelInterleavedSampleModel(
347 DataBuffer.TYPE_BYTE, width, height, _NUM_OF_BANDS);
348 ColorModel colorModel = PlanarImage.createColorModel(sampleModel);
349
350 TiledImage tiledImage = new TiledImage(
351 0, 0, width, height, 0, 0, sampleModel, colorModel);
352
353 Raster raster = RasterFactory.createWritableRaster(
354 sampleModel, dataBuffer, new Point(0, 0));
355
356 tiledImage.setData(raster);
357
358 if (false) {
359 JAI.create("filestore", tiledImage, "test.png", "PNG");
360
361 printImage(renderedImage);
362 printImage(tiledImage);
363 }
364
365 return tiledImage;
366 }
367
368 protected void printImage(RenderedImage renderedImage) {
369 SampleModel sampleModel = renderedImage.getSampleModel();
370
371 int height = renderedImage.getHeight();
372 int width = renderedImage.getWidth();
373 int numOfBands = sampleModel.getNumBands();
374
375 int[] pixels = new int[height * width * numOfBands];
376
377 Raster raster = renderedImage.getData();
378
379 raster.getPixels(0, 0, width, height, pixels);
380
381 int offset = 0;
382
383 for (int h = 0; h < height; h++) {
384 for (int w = 0; w < width; w++) {
385 offset = (h * width * numOfBands) + (w * numOfBands);
386
387 System.out.print("[" + w + ", " + h + "] = ");
388
389 for (int b = 0; b < numOfBands; b++) {
390 System.out.print(pixels[offset + b] + " ");
391 }
392 }
393
394 System.out.println();
395 }
396 }
397
398 private static final int _NUM_OF_BANDS = 4;
399
400 private static Log _log = LogFactoryUtil.getLog(SpriteProcessorImpl.class);
401
402 }