Mercurial > hg > digilib-old
annotate common/src/main/java/digilib/image/ImageJobDescription.java @ 903:7779b37d1d05
refactored into maven modules per servlet type.
can build servlet-api 2.3 and 3.0 via profile now!
| author | robcast |
|---|---|
| date | Tue, 26 Apr 2011 20:24:31 +0200 |
| parents | servlet/src/main/java/digilib/image/ImageJobDescription.java@ba1eb2d821a2 |
| children | 28d007673346 |
| rev | line source |
|---|---|
| 557 | 1 package digilib.image; |
| 500 | 2 |
| 3 import java.awt.geom.AffineTransform; | |
| 4 import java.awt.geom.Rectangle2D; | |
| 5 import java.io.IOException; | |
| 6 | |
| 7 import org.apache.log4j.Logger; | |
| 8 | |
| 829 | 9 import digilib.image.DocuImage.ColorOp; |
| 500 | 10 import digilib.io.DocuDirCache; |
| 541 | 11 import digilib.io.DocuDirectory; |
| 500 | 12 import digilib.io.FileOpException; |
| 13 import digilib.io.FileOps; | |
| 563 | 14 import digilib.io.FileOps.FileClass; |
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15 import digilib.io.ImageInput; |
| 574 | 16 import digilib.io.ImageSet; |
| 557 | 17 import digilib.servlet.DigilibConfiguration; |
| 596 | 18 import digilib.util.ImageSize; |
| 557 | 19 import digilib.util.OptionsSet; |
| 20 import digilib.util.Parameter; | |
| 21 import digilib.util.ParameterMap; | |
| 500 | 22 |
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23 /** |
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24 * A class for storing the set of parameters necessary for scaling images |
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25 * with an ImageWorker. |
| 500 | 26 * |
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27 * This contains the functionality formerly found in Scaler.processRequest(), |
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28 * only factorized. |
| 500 | 29 * |
| 547 | 30 * @author cmielack, casties |
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31 * |
| 500 | 32 */ |
| 33 | |
| 547 | 34 public class ImageJobDescription extends ParameterMap { |
| 500 | 35 |
| 36 DigilibConfiguration dlConfig = null; | |
| 37 protected static Logger logger = Logger.getLogger("digilib.servlet"); | |
| 38 | |
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39 ImageInput input = null; |
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40 ImageSet imageSet = null; |
| 541 | 41 DocuDirectory fileDir = null; |
| 42 String filePath = null; | |
| 500 | 43 ImageSize expectedSourceSize = null; |
| 44 Float scaleXY = null; | |
| 45 Rectangle2D userImgArea = null; | |
| 589 | 46 Rectangle2D outerUserImgArea = null; |
| 502 | 47 Boolean imageSendable = null; |
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48 String mimeType = null; |
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49 Integer paramDW = null; |
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50 Integer paramDH = null; |
| 547 | 51 |
| 52 /** create empty ImageJobDescription. | |
| 53 * @param dlcfg | |
| 54 */ | |
| 55 public ImageJobDescription(DigilibConfiguration dlcfg) { | |
| 500 | 56 super(30); |
| 547 | 57 dlConfig = dlcfg; |
| 552 | 58 } |
| 59 | |
| 60 | |
| 61 /** set up Parameters | |
| 557 | 62 * @see digilib.util.ParameterMap#initParams() |
| 552 | 63 */ |
| 64 @Override | |
| 65 protected void initParams() { | |
| 500 | 66 // url of the page/document (second part) |
| 67 newParameter("fn", "", null, 's'); | |
| 68 // page number | |
| 69 newParameter("pn", new Integer(1), null, 's'); | |
| 70 // width of client in pixels | |
| 71 newParameter("dw", new Integer(0), null, 's'); | |
| 72 // height of client in pixels | |
| 73 newParameter("dh", new Integer(0), null, 's'); | |
| 74 // left edge of image (float from 0 to 1) | |
| 75 newParameter("wx", new Float(0), null, 's'); | |
| 76 // top edge in image (float from 0 to 1) | |
| 77 newParameter("wy", new Float(0), null, 's'); | |
| 78 // width of image (float from 0 to 1) | |
| 79 newParameter("ww", new Float(1), null, 's'); | |
| 80 // height of image (float from 0 to 1) | |
| 81 newParameter("wh", new Float(1), null, 's'); | |
| 82 // scale factor | |
| 83 newParameter("ws", new Float(1), null, 's'); | |
| 84 // special options like 'fit' for gifs | |
| 547 | 85 newParameter("mo", this.options, null, 's'); |
| 500 | 86 // rotation angle (degree) |
| 87 newParameter("rot", new Float(0), null, 's'); | |
| 88 // contrast enhancement factor | |
| 89 newParameter("cont", new Float(0), null, 's'); | |
| 90 // brightness enhancement factor | |
| 91 newParameter("brgt", new Float(0), null, 's'); | |
| 92 // color multiplicative factors | |
| 93 newParameter("rgbm", "0/0/0", null, 's'); | |
| 94 // color additive factors | |
| 95 newParameter("rgba", "0/0/0", null, 's'); | |
| 96 // display dpi resolution (total) | |
| 97 newParameter("ddpi", new Float(0), null, 's'); | |
| 98 // display dpi X resolution | |
| 99 newParameter("ddpix", new Float(0), null, 's'); | |
| 100 // display dpi Y resolution | |
| 101 newParameter("ddpiy", new Float(0), null, 's'); | |
| 102 // scale factor for mo=ascale | |
| 103 newParameter("scale", new Float(1), null, 's'); | |
| 829 | 104 // color conversion operation |
| 105 newParameter("colop", "", null, 's'); | |
| 500 | 106 } |
| 107 | |
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108 |
| 552 | 109 /* (non-Javadoc) |
| 110 * @see digilib.servlet.ParameterMap#initOptions() | |
| 547 | 111 */ |
| 552 | 112 @Override |
| 113 protected void initOptions() { | |
| 565 | 114 String s = this.getAsString("mo"); |
| 115 options = new OptionsSet(s); | |
| 500 | 116 } |
| 552 | 117 |
| 118 | |
| 119 /** Creates new ImageJobDescription by merging Parameters from another ParameterMap. | |
| 120 * @param pm | |
| 121 * @param dlcfg | |
| 122 * @return | |
| 123 */ | |
| 557 | 124 public static ImageJobDescription getInstance(ParameterMap pm, DigilibConfiguration dlcfg) { |
| 552 | 125 ImageJobDescription newMap = new ImageJobDescription(dlcfg); |
| 126 // add all params to this map | |
| 557 | 127 newMap.params.putAll(pm.getParams()); |
| 552 | 128 newMap.initOptions(); |
| 129 return newMap; | |
| 130 } | |
| 131 | |
| 500 | 132 |
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133 /** Returns the mime-type (of the input). |
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134 * @return |
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135 * @throws IOException |
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136 */ |
| 547 | 137 public String getMimeType() throws IOException { |
| 138 if (mimeType == null) { | |
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139 input = getInput(); |
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140 mimeType = input.getMimetype(); |
| 502 | 141 } |
| 500 | 142 return mimeType; |
| 143 } | |
| 144 | |
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145 /** Returns the ImageInput to use. |
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146 * @return |
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147 * @throws IOException |
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148 */ |
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149 public ImageInput getInput() throws IOException { |
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150 if(input == null){ |
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151 imageSet = getImageSet(); |
| 500 | 152 |
| 153 /* select a resolution */ | |
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154 if (isHiresOnly()) { |
| 500 | 155 // get first element (= highest resolution) |
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156 input = imageSet.getBiggest(); |
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157 } else if (isLoresOnly()) { |
| 500 | 158 // enforced lores uses next smaller resolution |
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159 input = imageSet.getNextSmaller(getExpectedSourceSize()); |
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160 if (input == null) { |
| 500 | 161 // this is the smallest we have |
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162 input = imageSet.getSmallest(); |
| 500 | 163 } |
| 164 } else { | |
| 165 // autores: use next higher resolution | |
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166 input = imageSet.getNextBigger(getExpectedSourceSize()); |
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167 if (input == null) { |
| 500 | 168 // this is the highest we have |
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169 input = imageSet.getBiggest(); |
| 500 | 170 } |
| 171 } | |
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172 if (input == null || input.getMimetype() == null) { |
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173 throw new FileOpException("Unable to load "+input); |
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174 } |
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175 logger.info("Planning to load: " + input); |
| 500 | 176 } |
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177 return input; |
| 500 | 178 } |
| 179 | |
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180 /** Returns the DocuDirectory for the input (file). |
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181 * @return |
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182 * @throws FileOpException |
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183 */ |
| 557 | 184 public DocuDirectory getFileDirectory() throws FileOpException { |
| 555 | 185 if(fileDir == null){ |
| 500 | 186 DocuDirCache dirCache = (DocuDirCache) dlConfig.getValue("servlet.dir.cache"); |
| 555 | 187 String fp = getFilePath(); |
| 188 fileDir = dirCache.getDirectory(fp); | |
| 541 | 189 if (fileDir == null) { |
| 190 throw new FileOpException("Directory " + getFilePath() + " not found."); | |
| 500 | 191 } |
| 192 } | |
| 541 | 193 return fileDir; |
| 500 | 194 } |
| 195 | |
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196 /** Returns the ImageSet to load. |
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197 * @return |
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198 * @throws FileOpException |
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199 */ |
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200 public ImageSet getImageSet() throws FileOpException { |
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201 if(imageSet==null){ |
| 541 | 202 DocuDirCache dirCache = (DocuDirCache) dlConfig.getValue("servlet.dir.cache"); |
| 203 | |
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204 imageSet = (ImageSet) dirCache.getFile(getFilePath(), getAsInt("pn"), FileClass.IMAGE); |
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205 if (imageSet == null) { |
| 541 | 206 throw new FileOpException("File " + getFilePath() + "(" |
| 207 + getAsInt("pn") + ") not found."); | |
| 208 } | |
| 209 } | |
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210 return imageSet; |
| 541 | 211 } |
| 212 | |
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213 /** Returns the file path name from the request. |
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214 * @return |
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215 */ |
| 500 | 216 public String getFilePath() { |
| 541 | 217 if(filePath == null){ |
| 500 | 218 String s = this.getAsString("request.path"); |
| 219 s += this.getAsString("fn"); | |
| 541 | 220 filePath = FileOps.normalName(s); |
| 500 | 221 } |
| 541 | 222 return filePath; |
| 500 | 223 } |
| 224 | |
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225 public boolean isHiresOnly(){ |
| 547 | 226 return hasOption("clip") || hasOption("hires"); |
| 500 | 227 } |
| 228 | |
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229 public boolean isLoresOnly(){ |
| 547 | 230 return hasOption("lores"); |
| 500 | 231 } |
| 232 | |
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233 public boolean isScaleToFit() { |
| 547 | 234 return !(hasOption("clip") || hasOption("osize") || hasOption("ascale")); |
| 500 | 235 } |
| 236 | |
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237 public boolean isAbsoluteScale(){ |
| 547 | 238 return hasOption("osize") || hasOption("ascale"); |
| 500 | 239 } |
| 240 | |
| 241 | |
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242 /** Returns the minimum size the source image should have for scaling. |
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243 * @return |
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244 * @throws IOException |
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245 */ |
| 547 | 246 public ImageSize getExpectedSourceSize() throws IOException { |
| 500 | 247 if (expectedSourceSize == null){ |
| 248 expectedSourceSize = new ImageSize(); | |
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249 if (isScaleToFit()) { |
| 500 | 250 // scale to fit -- calculate minimum source size |
| 251 float scale = (1 / Math.min(getAsFloat("ww"), getAsFloat("wh"))) * getAsFloat("ws"); | |
| 547 | 252 expectedSourceSize.setSize((int) (getDw() * scale), |
| 253 (int) (getDh() * scale)); | |
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254 } else if (isAbsoluteScale() && hasOption("ascale")) { |
| 500 | 255 // absolute scale -- apply scale to hires size |
| 547 | 256 expectedSourceSize = getHiresSize().getScaled(getAsFloat("scale")); |
| 500 | 257 } else { |
| 258 // clip to fit -- source = destination size | |
| 547 | 259 expectedSourceSize.setSize((int) (getDw() * getAsFloat("ws")), |
| 260 (int) (getDh() * getAsFloat("ws"))); | |
| 500 | 261 } |
| 262 } | |
| 263 return expectedSourceSize; | |
| 264 } | |
| 265 | |
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266 /** Returns the size of the highest resolution image. |
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267 * @return |
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268 * @throws IOException |
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269 */ |
| 547 | 270 public ImageSize getHiresSize() throws IOException { |
| 500 | 271 logger.debug("get_hiresSize()"); |
| 272 | |
| 273 ImageSize hiresSize = null; | |
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274 ImageSet fileset = getImageSet(); |
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275 if (isAbsoluteScale()) { |
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276 ImageInput hiresFile = fileset.getBiggest(); |
| 500 | 277 hiresSize = hiresFile.getSize(); |
| 278 } | |
| 279 return hiresSize; | |
| 280 } | |
| 281 | |
| 547 | 282 /** Returns image scaling factor. |
| 283 * Uses image size and user parameters. | |
| 284 * Modifies scaleXY, userImgArea. | |
| 285 * @return | |
| 286 * @throws IOException | |
| 287 * @throws ImageOpException | |
| 288 */ | |
| 289 public float getScaleXY() throws IOException, ImageOpException { | |
| 500 | 290 //logger.debug("get_scaleXY()"); |
| 291 if(scaleXY == null){ | |
| 292 // coordinates and scaling | |
| 293 float areaWidth; | |
| 294 float areaHeight; | |
| 547 | 295 float ws = getAsFloat("ws"); |
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296 ImageSize imgSize = getInput().getSize(); |
| 500 | 297 // user window area in [0,1] coordinates |
| 298 Rectangle2D relUserArea = new Rectangle2D.Float(getAsFloat("wx"), getAsFloat("wy"), | |
| 299 getAsFloat("ww"), getAsFloat("wh")); | |
| 300 // transform from relative [0,1] to image coordinates. | |
| 301 AffineTransform imgTrafo = AffineTransform.getScaleInstance(imgSize | |
| 302 .getWidth(), imgSize.getHeight()); | |
| 303 // transform user coordinate area to image coordinate area | |
| 547 | 304 userImgArea = imgTrafo.createTransformedShape( |
| 500 | 305 relUserArea).getBounds2D(); |
| 306 | |
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307 if (isScaleToFit()) { |
| 547 | 308 // calculate scaling factors based on inner user area |
| 500 | 309 areaWidth = (float) userImgArea.getWidth(); |
| 310 areaHeight = (float) userImgArea.getHeight(); | |
| 547 | 311 float scaleX = getDw() / areaWidth * ws; |
| 312 float scaleY = getDh() / areaHeight * ws; | |
| 500 | 313 scaleXY = (scaleX > scaleY) ? scaleY : scaleX; |
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314 } else if (isAbsoluteScale()) { |
| 547 | 315 // absolute scaling factor |
| 316 if (hasOption("osize")) { | |
| 317 // get original resolution from metadata | |
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318 imageSet.checkMeta(); |
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319 float origResX = imageSet.getResX(); |
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320 float origResY = imageSet.getResY(); |
| 547 | 321 if ((origResX == 0) || (origResY == 0)) { |
| 322 throw new ImageOpException("Missing image DPI information!"); | |
| 323 } | |
| 771 | 324 float ddpix = getAsFloat("ddpix"); |
| 325 float ddpiy = getAsFloat("ddpiy"); | |
| 326 if (ddpix == 0 || ddpiy == 0) { | |
| 327 float ddpi = getAsFloat("ddpi"); | |
| 328 if (ddpi == 0) { | |
| 329 throw new ImageOpException("Missing display DPI information!"); | |
| 330 } else { | |
| 331 ddpix = ddpi; | |
| 332 ddpiy = ddpi; | |
| 333 } | |
| 547 | 334 } |
| 335 // calculate absolute scale factor | |
| 771 | 336 float sx = ddpix / origResX; |
| 337 float sy = ddpiy / origResY; | |
| 547 | 338 // currently only same scale -- mean value |
| 339 scaleXY = (sx + sy) / 2f; | |
| 340 } else { | |
| 341 scaleXY = getAsFloat("scale"); | |
| 342 } | |
| 500 | 343 // we need to correct the factor if we use a pre-scaled image |
| 547 | 344 ImageSize hiresSize = getHiresSize(); |
| 500 | 345 if (imgSize.getWidth() != hiresSize.getWidth()) { |
| 346 scaleXY *= (float)hiresSize.getWidth() / (float)imgSize.getWidth(); | |
| 347 } | |
| 547 | 348 areaWidth = getDw() / scaleXY * ws; |
| 349 areaHeight = getDh() / scaleXY * ws; | |
| 500 | 350 // reset user area size |
| 351 userImgArea.setRect(userImgArea.getX(), userImgArea.getY(), | |
| 352 areaWidth, areaHeight); | |
| 353 } else { | |
| 547 | 354 // crop to fit -- don't scale |
| 355 areaWidth = getDw() * ws; | |
| 356 areaHeight = getDh() * ws; | |
| 500 | 357 // reset user area size |
| 358 userImgArea.setRect(userImgArea.getX(), userImgArea.getY(), | |
| 359 areaWidth, areaHeight); | |
| 360 scaleXY = 1f; | |
| 361 } | |
| 362 } | |
| 363 return (float) scaleXY; | |
| 364 } | |
| 365 | |
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366 /** Returns the width of the destination image. |
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367 * Uses dh parameter and aspect ratio if dw parameter is empty. |
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368 * @return |
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369 * @throws IOException |
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370 */ |
| 547 | 371 public int getDw() throws IOException { |
| 500 | 372 logger.debug("get_paramDW()"); |
| 547 | 373 if (paramDW == null) { |
| 500 | 374 |
| 547 | 375 paramDW = getAsInt("dw"); |
| 376 paramDH = getAsInt("dh"); | |
| 377 | |
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378 float imgAspect = getInput().getAspect(); |
| 500 | 379 if (paramDW == 0) { |
| 547 | 380 // calculate dw |
| 381 paramDW = Math.round(paramDH * imgAspect); | |
| 500 | 382 setValue("dw", paramDW); |
| 383 } else if (paramDH == 0) { | |
| 547 | 384 // calculate dh |
| 385 paramDH = Math.round(paramDW / imgAspect); | |
| 386 setValue("dh", paramDH); | |
| 500 | 387 } |
| 388 } | |
| 389 return paramDW; | |
| 390 } | |
| 391 | |
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392 /** Returns the height of the destination image. |
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393 * Uses dw parameter and aspect ratio if dh parameter is empty. |
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394 * @return |
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395 * @throws IOException |
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396 */ |
| 547 | 397 public int getDh() throws IOException { |
| 500 | 398 logger.debug("get_paramDH()"); |
| 547 | 399 if (paramDH == null) { |
| 400 | |
| 401 paramDW = getAsInt("dw"); | |
| 402 paramDH = getAsInt("dh"); | |
| 500 | 403 |
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404 float imgAspect = getInput().getAspect(); |
| 500 | 405 if (paramDW == 0) { |
| 547 | 406 // calculate dw |
| 407 paramDW = Math.round(paramDH * imgAspect); | |
| 408 setValue("dw", paramDW); | |
| 500 | 409 } else if (paramDH == 0) { |
| 547 | 410 // calculate dh |
| 411 paramDH = Math.round(paramDW / imgAspect); | |
| 412 setValue("dh", paramDH); | |
| 500 | 413 } |
| 414 } | |
| 415 return paramDH; | |
| 416 } | |
| 547 | 417 |
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418 /** Returns image quality as an integer. |
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419 * @return |
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420 */ |
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421 public int getScaleQual(){ |
| 500 | 422 logger.debug("get_scaleQual()"); |
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423 int qual = dlConfig.getAsInt("default-quality"); |
| 547 | 424 if(hasOption("q0")) |
| 500 | 425 qual = 0; |
| 547 | 426 else if(hasOption("q1")) |
| 500 | 427 qual = 1; |
| 547 | 428 else if(hasOption("q2")) |
| 500 | 429 qual = 2; |
| 430 return qual; | |
| 431 } | |
| 432 | |
| 829 | 433 public ColorOp getColOp() { |
| 434 String op = getAsString("colop"); | |
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435 if (op == null || op.length() == 0) { |
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436 return null; |
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437 } |
| 829 | 438 try { |
| 439 return ColorOp.valueOf(op.toUpperCase()); | |
| 440 } catch (Exception e) { | |
| 441 logger.error("Invalid color op: " + op); | |
| 442 } | |
| 443 return null; | |
| 444 } | |
| 500 | 445 |
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446 /** |
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447 * Returns the area of the source image that will be transformed into the |
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448 * destination image. |
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449 * |
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450 * @return |
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451 * @throws IOException |
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452 * @throws ImageOpException |
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453 */ |
| 547 | 454 public Rectangle2D getUserImgArea() throws IOException, ImageOpException{ |
| 455 if(userImgArea == null) { | |
| 456 // getScaleXY sets userImgArea | |
| 457 getScaleXY(); | |
| 500 | 458 } |
| 459 return userImgArea; | |
| 460 } | |
| 461 | |
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462 /** Returns the maximal area of the source image that will be used. |
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463 * @return |
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464 * @throws IOException |
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465 * @throws ImageOpException |
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466 */ |
| 547 | 467 public Rectangle2D getOuterUserImgArea() throws IOException, ImageOpException { |
| 500 | 468 if(outerUserImgArea == null){ |
| 547 | 469 outerUserImgArea = getUserImgArea(); |
| 500 | 470 |
| 471 // image size in pixels | |
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472 ImageSize imgSize = getInput().getSize(); |
| 547 | 473 Rectangle2D imgBounds = new Rectangle2D.Float(0, 0, imgSize.getWidth(), |
| 474 imgSize.getHeight()); | |
| 500 | 475 |
| 476 // clip area at the image border | |
| 477 outerUserImgArea = outerUserImgArea.createIntersection(imgBounds); | |
| 478 | |
| 479 // check image parameters sanity | |
| 547 | 480 scaleXY = getScaleXY(); |
| 500 | 481 logger.debug("outerUserImgArea.getWidth()=" + outerUserImgArea.getWidth()); |
| 547 | 482 logger.debug("get_scaleXY() * outerUserImgArea.getWidth() = " + (scaleXY * outerUserImgArea.getWidth())); |
| 500 | 483 |
| 484 if ((outerUserImgArea.getWidth() < 1) | |
| 485 || (outerUserImgArea.getHeight() < 1) | |
| 547 | 486 || (scaleXY * outerUserImgArea.getWidth() < 2) |
| 487 || (scaleXY * outerUserImgArea.getHeight() < 2)) { | |
| 500 | 488 logger.error("ERROR: invalid scale parameter set!"); |
| 489 throw new ImageOpException("Invalid scale parameter set!"); | |
| 490 } | |
| 491 } | |
| 492 return outerUserImgArea; | |
| 493 } | |
| 494 | |
| 495 | |
| 547 | 496 public float[] getRGBM(){ |
| 502 | 497 float[] paramRGBM = null;//{0f,0f,0f}; |
| 547 | 498 Parameter p = params.get("rgbm"); |
| 500 | 499 if (p.hasValue() && (!p.getAsString().equals("0/0/0"))) { |
| 500 return p.parseAsFloatArray("/"); | |
| 501 } | |
| 502 return paramRGBM; | |
| 503 } | |
| 504 | |
| 547 | 505 public float[] getRGBA(){ |
| 502 | 506 float[] paramRGBA = null;//{0f,0f,0f}; |
| 547 | 507 Parameter p = params.get("rgba"); |
| 500 | 508 if (p.hasValue() && (!p.getAsString().equals("0/0/0"))) { |
| 509 paramRGBA = p.parseAsFloatArray("/"); | |
| 510 } | |
| 511 return paramRGBA; | |
| 512 } | |
| 513 | |
| 547 | 514 /** Has send-as-file been requested? |
| 515 * @return | |
| 516 */ | |
| 517 public boolean getSendAsFile(){ | |
| 518 return hasOption("file") | |
| 519 || hasOption("rawfile"); | |
| 500 | 520 } |
| 502 | 521 |
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522 /** |
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523 * Returns if the image can be sent without processing. Takes image type and |
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524 * additional image operations into account. Does not check requested size |
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525 * transformation. |
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526 * |
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527 * @return |
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528 * @throws IOException |
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529 */ |
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530 public boolean isImageSendable() throws IOException { |
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531 if (imageSendable == null) { |
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532 String mimeType = getMimeType(); |
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533 imageSendable = (mimeType != null |
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534 && (mimeType.equals("image/jpeg") || mimeType.equals("image/png") |
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535 || mimeType.equals("image/gif")) |
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536 && !(hasOption("hmir") |
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537 || hasOption("vmir") || (getAsFloat("rot") != 0.0) |
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538 || (getRGBM() != null) || (getRGBA() != null) |
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539 || (getAsFloat("cont") != 0.0) || (getAsFloat("brgt") != 0.0))); |
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540 } |
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541 return imageSendable; |
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542 } |
| 502 | 543 |
| 544 | |
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545 /** |
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546 * Returns if any transformation of the source image (image manipulation or |
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547 * format conversion) is required. |
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548 * |
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549 * @return |
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550 * @throws IOException |
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551 */ |
| 547 | 552 public boolean isTransformRequired() throws IOException { |
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553 ImageSize is = getInput().getSize(); |
| 547 | 554 ImageSize ess = getExpectedSourceSize(); |
| 555 // nt = no transform required | |
| 556 boolean nt = isImageSendable() && ( | |
| 557 // lores: send if smaller | |
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558 (isLoresOnly() && is.isSmallerThan(ess)) |
| 547 | 559 // else send if it fits |
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560 || (!(isLoresOnly() || isHiresOnly()) && is.fitsIn(ess))); |
| 547 | 561 return ! nt; |
| 502 | 562 } |
| 500 | 563 } |