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.FileInputStream;
49 import java.io.FileOutputStream;
50 import java.io.IOException;
51
52 import java.util.ArrayList;
53 import java.util.Collections;
54 import java.util.List;
55 import java.util.Properties;
56
57 import javax.imageio.ImageIO;
58
59 import javax.media.jai.JAI;
60 import javax.media.jai.LookupTableJAI;
61 import javax.media.jai.PlanarImage;
62 import javax.media.jai.RasterFactory;
63 import javax.media.jai.TiledImage;
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
75 public class SpriteProcessorImpl implements SpriteProcessor {
76
77 static {
78 System.setProperty("com.sun.media.jai.disableMediaLib", "true");
79 }
80
81 public Properties generate(
82 List<File> images, String spriteFileName,
83 String spritePropertiesFileName, String spritePropertiesRootPath,
84 int maxHeight, int maxWidth, int maxSize)
85 throws IOException {
86
87 if (images.size() < 1) {
88 return null;
89 }
90
91 if (spritePropertiesRootPath.endsWith(StringPool.SLASH) ||
92 spritePropertiesRootPath.endsWith(StringPool.BACK_SLASH)) {
93
94 spritePropertiesRootPath = spritePropertiesRootPath.substring(
95 0, spritePropertiesRootPath.length() - 1);
96 }
97
98 File dir = images.get(0).getParentFile();
99
100 File spritePropertiesFile = new File(
101 dir.toString() + StringPool.SLASH + spritePropertiesFileName);
102
103 boolean build = false;
104
105 long lastModified = 0;
106
107 if (spritePropertiesFile.exists()) {
108 lastModified = spritePropertiesFile.lastModified();
109
110 for (File image : images) {
111 if (image.lastModified() > lastModified) {
112 build = true;
113
114 break;
115 }
116 }
117 }
118 else {
119 build = true;
120 }
121
122 if (!build) {
123 String spritePropertiesString = FileUtil.read(spritePropertiesFile);
124
125 if (Validator.isNull(spritePropertiesString)) {
126 return null;
127 }
128 else {
129 return PropertiesUtil.load(spritePropertiesString);
130 }
131 }
132
133 List<RenderedImage> renderedImages = new ArrayList<RenderedImage>();
134
135 Properties spriteProperties = new SortedProperties();
136
137 float x = 0;
138 float y = 0;
139
140 for (File file : images) {
141 if (file.length() > maxSize) {
142 continue;
143 }
144
145 FileInputStream fis = new FileInputStream(file);
146
147 try {
148 RenderedImage renderedImage = ImageIO.read(fis);
149
150 int height = renderedImage.getHeight();
151 int width = renderedImage.getWidth();
152
153 if ((height <= maxHeight) && (width <= maxWidth)) {
154 renderedImage = convert(renderedImage);
155
156 renderedImage = TranslateDescriptor.create(
157 renderedImage, x, y, null, null);
158
159 renderedImages.add(renderedImage);
160
161 String key = StringUtil.replace(
162 file.toString(), StringPool.BACK_SLASH,
163 StringPool.SLASH);
164
165 key = key.substring(
166 spritePropertiesRootPath.toString().length());
167
168 String value = (int)y + "," + height + "," + width;
169
170 spriteProperties.setProperty(key, value);
171
172 y += renderedImage.getHeight();
173 }
174 }
175 catch (Exception e) {
176 if (_log.isWarnEnabled()) {
177 _log.warn("Unable to process " + file);
178 }
179
180 if (_log.isDebugEnabled()) {
181 _log.debug(e, e);
182 }
183 }
184 finally {
185 fis.close();
186 }
187 }
188
189 if (renderedImages.size() <= 1) {
190 renderedImages.clear();
191 spriteProperties.clear();
192 }
193 else {
194
195
197 RenderedImage renderedImage = MosaicDescriptor.create(
198 renderedImages.toArray(
199 new RenderedImage[renderedImages.size()]),
200 MosaicDescriptor.MOSAIC_TYPE_OVERLAY, null, null, null, null,
201 null);
202
203 File spriteFile = new File(
204 dir.toString() + StringPool.SLASH + spriteFileName);
205
206 ImageIO.write(renderedImage, "png", spriteFile);
207
208 if (lastModified > 0) {
209 spriteFile.setLastModified(lastModified);
210 }
211
212 ImageWorker imageWorker = new ImageWorker(renderedImage);
213
214 imageWorker.forceIndexColorModelForGIF(true);
215
216
218 renderedImage = imageWorker.getPlanarImage();
219
220 spriteFile = new File(
221 dir.toString() + StringPool.SLASH +
222 StringUtil.replace(spriteFileName, ".png", ".gif"));
223
224 FileOutputStream fos = new FileOutputStream(spriteFile);
225
226 try {
227 ImageProcessorUtil.encodeGIF(renderedImage, fos);
228 }
229 finally {
230 fos.close();
231 }
232
233 if (lastModified > 0) {
234 spriteFile.setLastModified(lastModified);
235 }
236 }
237
238 FileUtil.write(
239 spritePropertiesFile, PropertiesUtil.toString(spriteProperties));
240
241 if (lastModified > 0) {
242 spritePropertiesFile.setLastModified(lastModified);
243 }
244
245 return spriteProperties;
246 }
247
248 protected RenderedImage convert(RenderedImage renderedImage)
249 throws Exception {
250
251 int height = renderedImage.getHeight();
252 int width = renderedImage.getWidth();
253
254 SampleModel sampleModel = renderedImage.getSampleModel();
255 ColorModel colorModel = renderedImage.getColorModel();
256
257 Raster raster = renderedImage.getData();
258
259 DataBuffer dataBuffer = raster.getDataBuffer();
260
261 if (colorModel instanceof IndexColorModel) {
262 IndexColorModel indexColorModel = (IndexColorModel)colorModel;
263
264 int mapSize = indexColorModel.getMapSize();
265
266 byte[][] data = new byte[4][mapSize];
267
268 indexColorModel.getReds(data[0]);
269 indexColorModel.getGreens(data[1]);
270 indexColorModel.getBlues(data[2]);
271 indexColorModel.getAlphas(data[3]);
272
273 LookupTableJAI lookupTableJAI = new LookupTableJAI(data);
274
275 renderedImage = LookupDescriptor.create(
276 renderedImage, lookupTableJAI, null);
277 }
278 else if (sampleModel.getNumBands() == 2) {
279 List<Byte> bytesList = new ArrayList<Byte>(
280 height * width * _NUM_OF_BANDS);
281
282 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
283
284 for (int i = 0; i < dataBuffer.getSize(); i++) {
285 int mod = (i + 1) % 2;
286
287 int elemPos = i;
288
289 if (mod == 0) {
290 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
291 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
292 }
293
294 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
295
296 if (mod == 0) {
297 Collections.reverse(tempBytesList);
298
299 bytesList.addAll(tempBytesList);
300
301 tempBytesList.clear();
302 }
303 }
304
305 byte[] data = ArrayUtil.toArray(
306 bytesList.toArray(new Byte[bytesList.size()]));
307
308 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
309
310 renderedImage = createRenderedImage(
311 renderedImage, height, width, newDataBuffer);
312 }
313 else if (colorModel.getTransparency() != Transparency.TRANSLUCENT) {
314 List<Byte> bytesList = new ArrayList<Byte>(
315 height * width * _NUM_OF_BANDS);
316
317 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
318
319 for (int i = 0; i < dataBuffer.getSize(); i++) {
320 int mod = (i + 1) % 3;
321
322 int elemPos = i;
323
324 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
325
326 if (mod == 0) {
327 tempBytesList.add((byte)255);
328
329 Collections.reverse(tempBytesList);
330
331 bytesList.addAll(tempBytesList);
332
333 tempBytesList.clear();
334 }
335 }
336
337 byte[] data = ArrayUtil.toArray(
338 bytesList.toArray(new Byte[bytesList.size()]));
339
340 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
341
342 renderedImage = createRenderedImage(
343 renderedImage, height, width, newDataBuffer);
344 }
345
346 return renderedImage;
347 }
348
349 protected RenderedImage createRenderedImage(
350 RenderedImage renderedImage, int height, int width,
351 DataBuffer dataBuffer) {
352
353 SampleModel sampleModel =
354 RasterFactory.createPixelInterleavedSampleModel(
355 DataBuffer.TYPE_BYTE, width, height, _NUM_OF_BANDS);
356 ColorModel colorModel = PlanarImage.createColorModel(sampleModel);
357
358 TiledImage tiledImage = new TiledImage(
359 0, 0, width, height, 0, 0, sampleModel, colorModel);
360
361 Raster raster = RasterFactory.createWritableRaster(
362 sampleModel, dataBuffer, new Point(0, 0));
363
364 tiledImage.setData(raster);
365
366 if (false) {
367 JAI.create("filestore", tiledImage, "test.png", "PNG");
368
369 printImage(renderedImage);
370 printImage(tiledImage);
371 }
372
373 return tiledImage;
374 }
375
376 protected void printImage(RenderedImage renderedImage) {
377 SampleModel sampleModel = renderedImage.getSampleModel();
378
379 int height = renderedImage.getHeight();
380 int width = renderedImage.getWidth();
381 int numOfBands = sampleModel.getNumBands();
382
383 int[] pixels = new int[height * width * numOfBands];
384
385 Raster raster = renderedImage.getData();
386
387 raster.getPixels(0, 0, width, height, pixels);
388
389 int offset = 0;
390
391 for (int h = 0; h < height; h++) {
392 for (int w = 0; w < width; w++) {
393 offset = (h * width * numOfBands) + (w * numOfBands);
394
395 System.out.print("[" + w + ", " + h + "] = ");
396
397 for (int b = 0; b < numOfBands; b++) {
398 System.out.print(pixels[offset + b] + " ");
399 }
400 }
401
402 System.out.println();
403 }
404 }
405
406 private static final int _NUM_OF_BANDS = 4;
407
408 private static Log _log = LogFactoryUtil.getLog(SpriteProcessorImpl.class);
409
410 }