Mercurial > hg > digilib-old
annotate servlet/src/digilib/image/ImageLoaderDocuImage.java @ 563:686086d6e6d6 digilibPDF
more refactoring and rearranging
more enums
pdf and image generation still works
| author | robcast |
|---|---|
| date | Fri, 17 Dec 2010 20:42:25 +0100 |
| parents | 5ff500d6812a |
| children | 4c51d71aef13 |
| rev | line source |
|---|---|
| 1 | 1 /* ImageLoaderDocuImage -- Image class implementation using JDK 1.4 ImageLoader |
| 2 | |
| 279 | 3 Digital Image Library servlet components |
| 1 | 4 |
| 279 | 5 Copyright (C) 2002, 2003 Robert Casties (robcast@mail.berlios.de) |
| 1 | 6 |
| 279 | 7 This program is free software; you can redistribute it and/or modify it |
| 8 under the terms of the GNU General Public License as published by the | |
| 9 Free Software Foundation; either version 2 of the License, or (at your | |
| 10 option) any later version. | |
| 11 | |
| 12 Please read license.txt for the full details. A copy of the GPL | |
| 13 may be found at http://www.gnu.org/copyleft/lgpl.html | |
| 1 | 14 |
| 279 | 15 You should have received a copy of the GNU General Public License |
| 16 along with this program; if not, write to the Free Software | |
| 17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
| 18 */ | |
| 1 | 19 |
| 20 package digilib.image; | |
| 21 | |
| 496 | 22 import java.awt.Image; |
| 85 | 23 import java.awt.Rectangle; |
| 207 | 24 import java.awt.RenderingHints; |
| 73 | 25 import java.awt.geom.AffineTransform; |
| 101 | 26 import java.awt.geom.Rectangle2D; |
| 73 | 27 import java.awt.image.AffineTransformOp; |
| 28 import java.awt.image.BufferedImage; | |
| 144 | 29 import java.awt.image.ConvolveOp; |
| 30 import java.awt.image.Kernel; | |
| 85 | 31 import java.awt.image.RescaleOp; |
| 73 | 32 import java.io.File; |
| 33 import java.io.IOException; | |
|
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34 import java.io.OutputStream; |
| 89 | 35 import java.io.RandomAccessFile; |
| 464 | 36 import java.util.Arrays; |
| 85 | 37 import java.util.Iterator; |
| 1 | 38 |
| 352 | 39 import javax.imageio.IIOImage; |
| 73 | 40 import javax.imageio.ImageIO; |
| 85 | 41 import javax.imageio.ImageReadParam; |
| 42 import javax.imageio.ImageReader; | |
| 352 | 43 import javax.imageio.ImageWriteParam; |
| 44 import javax.imageio.ImageWriter; | |
| 220 | 45 import javax.imageio.stream.FileImageInputStream; |
| 85 | 46 import javax.imageio.stream.ImageInputStream; |
| 352 | 47 import javax.imageio.stream.ImageOutputStream; |
| 1 | 48 |
| 207 | 49 import digilib.io.FileOpException; |
| 464 | 50 import digilib.io.FileOps; |
| 159 | 51 import digilib.io.ImageFile; |
| 464 | 52 import digilib.io.ImageFileset; |
| 1 | 53 |
| 73 | 54 /** Implementation of DocuImage using the ImageLoader API of Java 1.4 and Java2D. */ |
| 1 | 55 public class ImageLoaderDocuImage extends DocuImageImpl { |
| 279 | 56 |
| 86 | 57 /** image object */ |
| 58 protected BufferedImage img; | |
| 279 | 59 |
| 86 | 60 /** interpolation type */ |
| 207 | 61 protected RenderingHints renderHint; |
| 279 | 62 |
| 86 | 63 /** ImageIO image reader */ |
| 64 protected ImageReader reader; | |
| 279 | 65 |
| 86 | 66 /** File that was read */ |
| 67 protected File imgFile; | |
| 85 | 68 |
| 69 /* loadSubimage is supported. */ | |
| 70 public boolean isSubimageSupported() { | |
| 71 return true; | |
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72 } |
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73 |
| 85 | 74 public void setQuality(int qual) { |
| 75 quality = qual; | |
| 207 | 76 renderHint = new RenderingHints(null); |
| 352 | 77 // hint.put(RenderingHints.KEY_ANTIALIASING, |
| 279 | 78 // RenderingHints.VALUE_ANTIALIAS_OFF); |
| 85 | 79 // setup interpolation quality |
| 80 if (qual > 0) { | |
| 181 | 81 logger.debug("quality q1"); |
| 279 | 82 renderHint.put(RenderingHints.KEY_INTERPOLATION, |
| 83 RenderingHints.VALUE_INTERPOLATION_BICUBIC); | |
| 85 | 84 } else { |
| 181 | 85 logger.debug("quality q0"); |
| 279 | 86 renderHint.put(RenderingHints.KEY_INTERPOLATION, |
| 87 RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR); | |
| 85 | 88 } |
| 89 } | |
| 86 | 90 |
| 85 | 91 public int getHeight() { |
| 92 int h = 0; | |
| 93 try { | |
| 94 if (img == null) { | |
| 95 h = reader.getHeight(0); | |
| 96 } else { | |
| 97 h = img.getHeight(); | |
| 98 } | |
| 99 } catch (IOException e) { | |
| 181 | 100 logger.debug("error in getHeight", e); |
| 85 | 101 } |
| 102 return h; | |
| 103 } | |
| 104 | |
| 105 public int getWidth() { | |
| 106 int w = 0; | |
| 107 try { | |
| 108 if (img == null) { | |
| 109 w = reader.getWidth(0); | |
| 110 } else { | |
| 111 w = img.getWidth(); | |
| 112 } | |
| 113 } catch (IOException e) { | |
| 181 | 114 logger.debug("error in getHeight", e); |
| 85 | 115 } |
| 116 return w; | |
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117 } |
| 1 | 118 |
| 464 | 119 /* returns a list of supported image formats */ |
| 531 | 120 public Iterator<String> getSupportedFormats() { |
| 464 | 121 String[] formats = ImageIO.getReaderFormatNames(); |
| 122 return Arrays.asList(formats).iterator(); | |
| 123 } | |
| 124 | |
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125 /** Check image size and type and store in ImageFile f */ |
| 563 | 126 public ImageFile identify(ImageFile imageFile) throws IOException { |
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127 // try parent method first |
| 563 | 128 ImageFile imf = super.identify(imageFile); |
| 129 if (imf != null) { | |
| 130 return imf; | |
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131 } |
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132 // fileset to store the information |
| 563 | 133 ImageFileset imgfs = imageFile.getParent(); |
| 134 File f = imageFile.getFile(); | |
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135 if (f == null) { |
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136 throw new IOException("File not found!"); |
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137 } |
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138 logger.debug("identifying (ImageIO) " + f); |
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139 /* |
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140 * try ImageReader |
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141 */ |
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142 RandomAccessFile raf = new RandomAccessFile(f, "r"); |
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143 ImageInputStream istream = ImageIO.createImageInputStream(raf); |
| 531 | 144 Iterator<ImageReader> readers = ImageIO.getImageReaders(istream); |
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145 if (readers.hasNext()) { |
| 531 | 146 ImageReader reader = readers.next(); |
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147 /* are there more readers? */ |
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148 logger.debug("ImageIO: this reader: " + reader.getClass()); |
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149 while (readers.hasNext()) { |
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150 logger.debug("ImageIO: next reader: " |
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151 + readers.next().getClass()); |
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152 } |
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153 try { |
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154 reader.setInput(istream); |
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155 ImageSize d = new ImageSize(reader.getWidth(0), reader.getHeight(0)); |
| 563 | 156 imageFile.setSize(d); |
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157 //String t = reader.getFormatName(); |
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158 String t = FileOps.mimeForFile(f); |
| 563 | 159 imageFile.setMimetype(t); |
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160 //logger.debug(" format:"+t); |
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161 if (imgfs != null) { |
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162 imgfs.setAspect(d); |
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163 } |
| 563 | 164 return imageFile; |
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165 } finally { |
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166 // dispose the reader to free resources |
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167 reader.dispose(); |
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168 raf.close(); |
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169 } |
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170 } |
| 464 | 171 throw new FileOpException("ERROR: unknown image file format!"); |
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172 } |
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173 |
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174 |
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175 /* load image file */ |
| 159 | 176 public void loadImage(ImageFile f) throws FileOpException { |
| 279 | 177 logger.debug("loadImage " + f.getFile()); |
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178 try { |
| 149 | 179 img = ImageIO.read(f.getFile()); |
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180 mimeType = f.getMimetype(); |
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181 } catch (IOException e) { |
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182 throw new FileOpException("Error reading image."); |
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183 } |
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184 } |
| 1 | 185 |
| 279 | 186 /** |
| 187 * Get an ImageReader for the image file. | |
| 188 * | |
| 189 * @return | |
| 190 */ | |
| 191 public ImageReader getReader(ImageFile f) throws IOException { | |
| 192 logger.debug("preloadImage " + f.getFile()); | |
| 148 | 193 if (reader != null) { |
| 207 | 194 logger.debug("Reader was not null!"); |
| 148 | 195 // clean up old reader |
| 207 | 196 dispose(); |
| 148 | 197 } |
| 352 | 198 // System.gc(); |
| 149 | 199 RandomAccessFile rf = new RandomAccessFile(f.getFile(), "r"); |
| 220 | 200 ImageInputStream istream = new FileImageInputStream(rf); |
| 352 | 201 // Iterator readers = ImageIO.getImageReaders(istream); |
| 279 | 202 String mt = f.getMimetype(); |
| 203 logger.debug("File type:" + mt); | |
| 531 | 204 Iterator<ImageReader> readers = ImageIO.getImageReadersByMIMEType(mt); |
| 279 | 205 if (!readers.hasNext()) { |
| 206 throw new FileOpException("Unable to load File!"); | |
| 207 } | |
| 531 | 208 reader = readers.next(); |
| 149 | 209 /* are there more readers? */ |
| 207 | 210 logger.debug("ImageIO: this reader: " + reader.getClass()); |
| 140 | 211 while (readers.hasNext()) { |
| 207 | 212 logger.debug("ImageIO: next reader: " + readers.next().getClass()); |
| 140 | 213 } |
| 352 | 214 // */ |
| 89 | 215 reader.setInput(istream); |
| 149 | 216 imgFile = f.getFile(); |
| 279 | 217 return reader; |
| 85 | 218 } |
| 219 | |
| 220 /* Load an image file into the Object. */ | |
| 159 | 221 public void loadSubimage(ImageFile f, Rectangle region, int prescale) |
| 279 | 222 throws FileOpException { |
| 207 | 223 logger.debug("loadSubimage"); |
| 85 | 224 try { |
| 149 | 225 if ((reader == null) || (imgFile != f.getFile())) { |
| 279 | 226 getReader(f); |
| 85 | 227 } |
| 228 // set up reader parameters | |
| 229 ImageReadParam readParam = reader.getDefaultReadParam(); | |
| 230 readParam.setSourceRegion(region); | |
| 220 | 231 if (prescale > 1) { |
| 232 readParam.setSourceSubsampling(prescale, prescale, 0, 0); | |
| 233 } | |
| 85 | 234 // read image |
| 207 | 235 logger.debug("loading.."); |
| 85 | 236 img = reader.read(0, readParam); |
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237 mimeType = f.getMimetype(); |
| 207 | 238 logger.debug("loaded"); |
| 85 | 239 } catch (IOException e) { |
| 240 throw new FileOpException("Unable to load File!"); | |
| 241 } | |
| 242 } | |
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243 |
| 86 | 244 /* write image of type mt to Stream */ |
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245 public void writeImage(String mt, OutputStream ostream) |
| 279 | 246 throws FileOpException { |
| 207 | 247 logger.debug("writeImage"); |
| 353 | 248 // setup output |
| 249 ImageWriter writer = null; | |
| 250 ImageOutputStream imgout = null; | |
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251 try { |
| 353 | 252 imgout = ImageIO.createImageOutputStream(ostream); |
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253 if (mt == "image/jpeg") { |
| 352 | 254 /* |
| 255 * JPEG doesn't do transparency so we have to convert any RGBA | |
| 256 * image to RGB :-( *Java2D BUG* | |
| 257 */ | |
| 258 if (img.getColorModel().hasAlpha()) { | |
| 259 logger.debug("BARF: JPEG with transparency!!"); | |
| 260 int w = img.getWidth(); | |
| 261 int h = img.getHeight(); | |
| 262 // BufferedImage.TYPE_INT_RGB seems to be fastest (JDK1.4.1, | |
| 263 // OSX) | |
| 264 int destType = BufferedImage.TYPE_INT_RGB; | |
| 265 BufferedImage img2 = new BufferedImage(w, h, destType); | |
| 266 img2.createGraphics().drawImage(img, null, 0, 0); | |
| 267 img = img2; | |
| 268 } | |
| 269 writer = (ImageWriter) ImageIO.getImageWritersByFormatName( | |
| 270 "jpeg").next(); | |
| 271 if (writer == null) { | |
| 272 throw new FileOpException("Unable to get JPEG writer"); | |
| 273 } | |
| 274 ImageWriteParam param = writer.getDefaultWriteParam(); | |
| 275 if (quality > 1) { | |
| 276 // change JPEG compression quality | |
| 353 | 277 param.setCompressionMode(ImageWriteParam.MODE_EXPLICIT); |
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278 //logger.debug("JPEG qual before: " |
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279 // + Float.toString(param.getCompressionQuality())); |
| 352 | 280 param.setCompressionQuality(0.9f); |
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281 //logger.debug("JPEG qual now: " |
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282 // + Float.toString(param.getCompressionQuality())); |
| 352 | 283 } |
| 284 writer.setOutput(imgout); | |
| 285 // render output | |
| 286 logger.debug("writing"); | |
| 287 writer.write(null, new IIOImage(img, null, null), param); | |
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288 } else if (mt == "image/png") { |
| 352 | 289 // render output |
| 290 writer = (ImageWriter) ImageIO.getImageWritersByFormatName( | |
| 291 "png").next(); | |
| 292 if (writer == null) { | |
| 293 throw new FileOpException("Unable to get PNG writer"); | |
| 294 } | |
| 295 writer.setOutput(imgout); | |
| 296 logger.debug("writing"); | |
| 297 writer.write(img); | |
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298 } else { |
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299 // unknown mime type |
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300 throw new FileOpException("Unknown mime type: " + mt); |
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301 } |
| 140 | 302 |
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303 } catch (IOException e) { |
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304 throw new FileOpException("Error writing image."); |
| 353 | 305 } finally { |
| 306 // clean up | |
| 307 if (writer != null) { | |
| 308 writer.dispose(); | |
| 309 } | |
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310 } |
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311 } |
| 1 | 312 |
| 149 | 313 public void scale(double scale, double scaleY) throws ImageOpException { |
| 207 | 314 logger.debug("scale"); |
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315 /* for downscaling in high quality the image is blurred first */ |
| 144 | 316 if ((scale <= 0.5) && (quality > 1)) { |
| 317 int bl = (int) Math.floor(1 / scale); | |
| 318 blur(bl); | |
| 319 } | |
| 207 | 320 /* then scaled */ |
| 279 | 321 AffineTransformOp scaleOp = new AffineTransformOp(AffineTransform |
| 322 .getScaleInstance(scale, scale), renderHint); | |
| 144 | 323 BufferedImage scaledImg = null; |
| 207 | 324 // enforce destination image type (*Java2D BUG*) |
| 220 | 325 int type = img.getType(); |
| 326 // FIXME: which type would be best? | |
| 279 | 327 if ((quality > 0) && (type != 0)) { |
| 207 | 328 logger.debug("creating destination image"); |
| 144 | 329 Rectangle2D dstBounds = scaleOp.getBounds2D(img); |
| 279 | 330 scaledImg = new BufferedImage((int) dstBounds.getWidth(), |
| 331 (int) dstBounds.getHeight(), type); | |
| 144 | 332 } |
| 207 | 333 logger.debug("scaling..."); |
| 144 | 334 scaledImg = scaleOp.filter(img, scaledImg); |
| 207 | 335 if (scaledImg == null) { |
| 336 throw new ImageOpException("Unable to scale"); | |
| 337 } | |
| 352 | 338 // DEBUG |
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339 logger.debug("destination image type " + scaledImg.getType()); |
| 279 | 340 logger.debug("SCALE: " + scale + " ->" + scaledImg.getWidth() + "x" |
| 144 | 341 + scaledImg.getHeight()); |
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342 img = scaledImg; |
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343 } |
| 1 | 344 |
| 144 | 345 public void blur(int radius) throws ImageOpException { |
| 352 | 346 // DEBUG |
| 181 | 347 logger.debug("blur: " + radius); |
| 144 | 348 // minimum radius is 2 |
| 349 int klen = Math.max(radius, 2); | |
| 220 | 350 // FIXME: use constant kernels for most common sizes |
| 144 | 351 int ksize = klen * klen; |
| 352 // kernel is constant 1/k | |
| 353 float f = 1f / ksize; | |
| 354 float[] kern = new float[ksize]; | |
| 355 for (int i = 0; i < ksize; i++) { | |
| 356 kern[i] = f; | |
| 357 } | |
| 358 Kernel blur = new Kernel(klen, klen, kern); | |
| 359 // blur with convolve operation | |
| 279 | 360 ConvolveOp blurOp = new ConvolveOp(blur, ConvolveOp.EDGE_NO_OP, |
| 361 renderHint); | |
| 145 | 362 // blur needs explicit destination image type for color *Java2D BUG* |
| 363 BufferedImage blurredImg = null; | |
| 364 if (img.getType() == BufferedImage.TYPE_3BYTE_BGR) { | |
| 279 | 365 blurredImg = new BufferedImage(img.getWidth(), img.getHeight(), img |
| 366 .getType()); | |
| 145 | 367 } |
| 368 blurredImg = blurOp.filter(img, blurredImg); | |
| 144 | 369 img = blurredImg; |
| 370 } | |
| 371 | |
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372 public void crop(int x_off, int y_off, int width, int height) |
| 279 | 373 throws ImageOpException { |
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374 // setup Crop |
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375 BufferedImage croppedImg = img.getSubimage(x_off, y_off, width, height); |
| 352 | 376 // DEBUG |
| 377 // util.dprintln(2, " time | |
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378 // "+(System.currentTimeMillis()-startTime)+"ms"); |
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379 if (croppedImg == null) { |
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380 throw new ImageOpException("Unable to crop"); |
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381 } |
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382 logger.debug("CROP:" + croppedImg.getWidth() + "x" |
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383 + croppedImg.getHeight()); |
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384 img = croppedImg; |
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385 } |
| 1 | 386 |
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387 public void enhance(float mult, float add) throws ImageOpException { |
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388 /* |
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389 * Only one constant should work regardless of the number of bands |
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390 * according to the JDK spec. Doesn't work on JDK 1.4 for OSX and Linux |
| 279 | 391 * (at least). RescaleOp scaleOp = new RescaleOp( (float)mult, |
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392 * (float)add, null); scaleOp.filter(img, img); |
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393 */ |
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394 |
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395 /* The number of constants must match the number of bands in the image. */ |
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396 int ncol = img.getColorModel().getNumComponents(); |
| 86 | 397 float[] dm = new float[ncol]; |
| 398 float[] da = new float[ncol]; | |
| 399 for (int i = 0; i < ncol; i++) { | |
| 400 dm[i] = (float) mult; | |
| 401 da[i] = (float) add; | |
| 85 | 402 } |
| 86 | 403 RescaleOp scaleOp = new RescaleOp(dm, da, null); |
| 85 | 404 scaleOp.filter(img, img); |
| 405 } | |
| 406 | |
| 279 | 407 public void enhanceRGB(float[] rgbm, float[] rgba) throws ImageOpException { |
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408 |
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409 /* |
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410 * The number of constants must match the number of bands in the image. |
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411 * We do only 3 (RGB) bands. |
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412 */ |
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413 |
| 86 | 414 int ncol = img.getColorModel().getNumColorComponents(); |
| 415 if ((ncol != 3) || (rgbm.length != 3) || (rgba.length != 3)) { | |
| 279 | 416 logger |
| 417 .debug("ERROR(enhance): unknown number of color bands or coefficients (" | |
| 418 + ncol + ")"); | |
| 86 | 419 return; |
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420 } |
| 279 | 421 RescaleOp scaleOp = new RescaleOp(rgbOrdered(rgbm), rgbOrdered(rgba), |
| 422 null); | |
| 86 | 423 scaleOp.filter(img, img); |
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424 } |
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425 |
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426 /** |
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427 * Ensures that the array f is in the right order to map the images RGB |
| 279 | 428 * components. (not shure what happens |
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429 */ |
| 86 | 430 public float[] rgbOrdered(float[] fa) { |
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431 /* |
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432 * TODO: this is UGLY, UGLY!! |
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433 */ |
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434 float[] fb; |
| 86 | 435 int t = img.getType(); |
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436 if (img.getColorModel().hasAlpha()) { |
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437 fb = new float[4]; |
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438 if ((t == BufferedImage.TYPE_INT_ARGB) |
| 279 | 439 || (t == BufferedImage.TYPE_INT_ARGB_PRE)) { |
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440 // RGB Type |
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441 fb[0] = fa[0]; |
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442 fb[1] = fa[1]; |
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443 fb[2] = fa[2]; |
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444 fb[3] = 1f; |
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445 } else { |
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446 // this isn't tested :-( |
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447 fb[0] = 1f; |
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448 fb[1] = fa[0]; |
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449 fb[2] = fa[1]; |
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450 fb[3] = fa[2]; |
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451 } |
| 86 | 452 } else { |
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453 fb = new float[3]; |
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454 if (t == BufferedImage.TYPE_3BYTE_BGR) { |
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455 // BGR Type (actually it looks like RBG...) |
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456 fb[0] = fa[0]; |
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457 fb[1] = fa[2]; |
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458 fb[2] = fa[1]; |
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459 } else { |
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460 fb[0] = fa[0]; |
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461 fb[1] = fa[1]; |
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462 fb[2] = fa[2]; |
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463 } |
| 86 | 464 } |
| 465 return fb; | |
| 85 | 466 } |
| 467 | |
| 140 | 468 public void rotate(double angle) throws ImageOpException { |
| 89 | 469 // setup rotation |
| 470 double rangle = Math.toRadians(angle); | |
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471 // create offset to make shure the rotated image has no negative |
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472 // coordinates |
| 101 | 473 double w = img.getWidth(); |
| 474 double h = img.getHeight(); | |
| 103 | 475 AffineTransform trafo = new AffineTransform(); |
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476 // center of rotation |
| 103 | 477 double x = (w / 2); |
| 478 double y = (h / 2); | |
| 101 | 479 trafo.rotate(rangle, x, y); |
| 103 | 480 // try rotation to see how far we're out of bounds |
| 207 | 481 AffineTransformOp rotOp = new AffineTransformOp(trafo, renderHint); |
| 103 | 482 Rectangle2D rotbounds = rotOp.getBounds2D(img); |
| 483 double xoff = rotbounds.getX(); | |
| 484 double yoff = rotbounds.getY(); | |
| 485 // move image back in line | |
| 279 | 486 trafo |
| 487 .preConcatenate(AffineTransform.getTranslateInstance(-xoff, | |
| 488 -yoff)); | |
| 101 | 489 // transform image |
| 207 | 490 rotOp = new AffineTransformOp(trafo, renderHint); |
| 89 | 491 BufferedImage rotImg = rotOp.filter(img, null); |
| 101 | 492 // calculate new bounding box |
| 352 | 493 // Rectangle2D bounds = rotOp.getBounds2D(img); |
| 103 | 494 img = rotImg; |
| 101 | 495 // crop new image (with self-made rounding) |
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496 /* |
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497 * img = rotImg.getSubimage( (int) (bounds.getX()+0.5), (int) |
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498 * (bounds.getY()+0.5), (int) (bounds.getWidth()+0.5), (int) |
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499 * (bounds.getHeight()+0.5)); |
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500 */ |
| 86 | 501 } |
| 85 | 502 |
| 89 | 503 public void mirror(double angle) throws ImageOpException { |
| 504 // setup mirror | |
| 505 double mx = 1; | |
| 506 double my = 1; | |
| 507 double tx = 0; | |
| 508 double ty = 0; | |
| 144 | 509 if (Math.abs(angle - 0) < epsilon) { // 0 degree |
| 89 | 510 mx = -1; |
| 511 tx = getWidth(); | |
| 144 | 512 } else if (Math.abs(angle - 90) < epsilon) { // 90 degree |
| 89 | 513 my = -1; |
| 514 ty = getHeight(); | |
| 144 | 515 } else if (Math.abs(angle - 180) < epsilon) { // 180 degree |
| 89 | 516 mx = -1; |
| 517 tx = getWidth(); | |
| 144 | 518 } else if (Math.abs(angle - 270) < epsilon) { // 270 degree |
| 89 | 519 my = -1; |
| 520 ty = getHeight(); | |
| 144 | 521 } else if (Math.abs(angle - 360) < epsilon) { // 360 degree |
| 89 | 522 mx = -1; |
| 523 tx = getWidth(); | |
| 524 } | |
| 279 | 525 AffineTransformOp mirOp = new AffineTransformOp(new AffineTransform(mx, |
| 526 0, 0, my, tx, ty), renderHint); | |
| 89 | 527 BufferedImage mirImg = mirOp.filter(img, null); |
| 528 img = mirImg; | |
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529 } |
| 86 | 530 |
| 279 | 531 /* |
| 532 * (non-Javadoc) | |
| 533 * | |
| 534 * @see java.lang.Object#finalize() | |
| 535 */ | |
| 148 | 536 protected void finalize() throws Throwable { |
| 207 | 537 dispose(); |
| 538 super.finalize(); | |
| 539 } | |
| 540 | |
| 541 public void dispose() { | |
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542 // we must dispose the ImageReader because it keeps the filehandle |
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543 // open! |
| 256 | 544 if (reader != null) { |
| 545 reader.dispose(); | |
| 546 reader = null; | |
| 547 } | |
| 148 | 548 img = null; |
| 549 } | |
| 550 | |
| 533 | 551 public Image getAwtImage(){ |
| 496 | 552 return (Image) img; |
| 553 } | |
| 554 | |
| 555 | |
| 1 | 556 } |