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
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 if (file.length() > maxSize) {
143 continue;
144 }
145
146 FileInputStream fis = new FileInputStream(file);
147
148 try {
149 RenderedImage renderedImage = ImageIO.read(fis);
150
151 int height = renderedImage.getHeight();
152 int width = renderedImage.getWidth();
153
154 if ((height <= maxHeight) && (width <= maxWidth)) {
155 renderedImage = convert(renderedImage);
156
157 renderedImage = TranslateDescriptor.create(
158 renderedImage, x, y, null, null);
159
160 renderedImages.add(renderedImage);
161
162 String key = StringUtil.replace(
163 file.toString(), StringPool.BACK_SLASH,
164 StringPool.SLASH);
165
166 key = key.substring(
167 spritePropertiesRootPath.toString().length());
168
169 String value = (int)y + "," + height + "," + width;
170
171 spriteProperties.setProperty(key, value);
172
173 y += renderedImage.getHeight();
174 }
175 }
176 catch (Exception e) {
177 if (_log.isWarnEnabled()) {
178 _log.warn("Unable to process " + file);
179 }
180
181 if (_log.isDebugEnabled()) {
182 _log.debug(e, e);
183 }
184 }
185 finally {
186 fis.close();
187 }
188 }
189
190 if (renderedImages.size() <= 1) {
191 renderedImages.clear();
192 spriteProperties.clear();
193 }
194 else {
195
196
198 RenderedImage renderedImage = MosaicDescriptor.create(
199 renderedImages.toArray(
200 new RenderedImage[renderedImages.size()]),
201 MosaicDescriptor.MOSAIC_TYPE_OVERLAY, null, null, null, null,
202 null);
203
204 File spriteFile = new File(
205 dir.toString() + StringPool.SLASH + spriteFileName);
206
207 ImageIO.write(renderedImage, "png", spriteFile);
208
209 if (lastModified > 0) {
210 spriteFile.setLastModified(lastModified);
211 }
212
213 ImageWorker imageWorker = new ImageWorker(renderedImage);
214
215 imageWorker.forceIndexColorModelForGIF(true);
216
217
219 renderedImage = imageWorker.getPlanarImage();
220
221 spriteFile = new File(
222 dir.toString() + StringPool.SLASH +
223 StringUtil.replace(spriteFileName, ".png", ".gif"));
224
225 FileOutputStream fos = new FileOutputStream(spriteFile);
226
227 try {
228 ImageProcessorUtil.encodeGIF(renderedImage, fos);
229 }
230 finally {
231 fos.close();
232 }
233
234 if (lastModified > 0) {
235 spriteFile.setLastModified(lastModified);
236 }
237 }
238
239 FileUtil.write(
240 spritePropertiesFile, PropertiesUtil.toString(spriteProperties));
241
242 if (lastModified > 0) {
243 spritePropertiesFile.setLastModified(lastModified);
244 }
245
246 return spriteProperties;
247 }
248
249 protected RenderedImage convert(RenderedImage renderedImage)
250 throws Exception {
251
252 int height = renderedImage.getHeight();
253 int width = renderedImage.getWidth();
254
255 SampleModel sampleModel = renderedImage.getSampleModel();
256 ColorModel colorModel = renderedImage.getColorModel();
257
258 Raster raster = renderedImage.getData();
259
260 DataBuffer dataBuffer = raster.getDataBuffer();
261
262 if (colorModel instanceof IndexColorModel) {
263 IndexColorModel indexColorModel = (IndexColorModel)colorModel;
264
265 int mapSize = indexColorModel.getMapSize();
266
267 byte[][] data = new byte[4][mapSize];
268
269 indexColorModel.getReds(data[0]);
270 indexColorModel.getGreens(data[1]);
271 indexColorModel.getBlues(data[2]);
272 indexColorModel.getAlphas(data[3]);
273
274 LookupTableJAI lookupTableJAI = new LookupTableJAI(data);
275
276 renderedImage = LookupDescriptor.create(
277 renderedImage, lookupTableJAI, null);
278 }
279 else if (sampleModel.getNumBands() == 2) {
280 List<Byte> bytesList = new ArrayList<Byte>(
281 height * width * _NUM_OF_BANDS);
282
283 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
284
285 for (int i = 0; i < dataBuffer.getSize(); i++) {
286 int mod = (i + 1) % 2;
287
288 int elemPos = i;
289
290 if (mod == 0) {
291 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
292 tempBytesList.add((byte)dataBuffer.getElem(elemPos - 1));
293 }
294
295 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
296
297 if (mod == 0) {
298 Collections.reverse(tempBytesList);
299
300 bytesList.addAll(tempBytesList);
301
302 tempBytesList.clear();
303 }
304 }
305
306 byte[] data = ArrayUtil.toArray(
307 bytesList.toArray(new Byte[bytesList.size()]));
308
309 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
310
311 renderedImage = createRenderedImage(
312 renderedImage, height, width, newDataBuffer);
313 }
314 else if (colorModel.getTransparency() != Transparency.TRANSLUCENT) {
315 List<Byte> bytesList = new ArrayList<Byte>(
316 height * width * _NUM_OF_BANDS);
317
318 List<Byte> tempBytesList = new ArrayList<Byte>(_NUM_OF_BANDS);
319
320 for (int i = 0; i < dataBuffer.getSize(); i++) {
321 int mod = (i + 1) % 3;
322
323 int elemPos = i;
324
325 tempBytesList.add((byte)dataBuffer.getElem(elemPos));
326
327 if (mod == 0) {
328 tempBytesList.add((byte)255);
329
330 Collections.reverse(tempBytesList);
331
332 bytesList.addAll(tempBytesList);
333
334 tempBytesList.clear();
335 }
336 }
337
338 byte[] data = ArrayUtil.toArray(
339 bytesList.toArray(new Byte[bytesList.size()]));
340
341 DataBuffer newDataBuffer = new DataBufferByte(data, data.length);
342
343 renderedImage = createRenderedImage(
344 renderedImage, height, width, newDataBuffer);
345 }
346
347 return renderedImage;
348 }
349
350 protected RenderedImage createRenderedImage(
351 RenderedImage renderedImage, int height, int width,
352 DataBuffer dataBuffer) {
353
354 SampleModel sampleModel =
355 RasterFactory.createPixelInterleavedSampleModel(
356 DataBuffer.TYPE_BYTE, width, height, _NUM_OF_BANDS);
357 ColorModel colorModel = PlanarImage.createColorModel(sampleModel);
358
359 TiledImage tiledImage = new TiledImage(
360 0, 0, width, height, 0, 0, sampleModel, colorModel);
361
362 Raster raster = RasterFactory.createWritableRaster(
363 sampleModel, dataBuffer, new Point(0, 0));
364
365 tiledImage.setData(raster);
366
367 if (false) {
368 JAI.create("filestore", tiledImage, "test.png", "PNG");
369
370 printImage(renderedImage);
371 printImage(tiledImage);
372 }
373
374 return tiledImage;
375 }
376
377 protected void printImage(RenderedImage renderedImage) {
378 SampleModel sampleModel = renderedImage.getSampleModel();
379
380 int height = renderedImage.getHeight();
381 int width = renderedImage.getWidth();
382 int numOfBands = sampleModel.getNumBands();
383
384 int[] pixels = new int[height * width * numOfBands];
385
386 Raster raster = renderedImage.getData();
387
388 raster.getPixels(0, 0, width, height, pixels);
389
390 int offset = 0;
391
392 for (int h = 0; h < height; h++) {
393 for (int w = 0; w < width; w++) {
394 offset = (h * width * numOfBands) + (w * numOfBands);
395
396 System.out.print("[" + w + ", " + h + "] = ");
397
398 for (int b = 0; b < numOfBands; b++) {
399 System.out.print(pixels[offset + b] + " ");
400 }
401 }
402
403 System.out.println();
404 }
405 }
406
407 private static final int _NUM_OF_BANDS = 4;
408
409 private static Log _log = LogFactoryUtil.getLog(SpriteProcessorImpl.class);
410
411 }