Mercurial > hg > digilib-old

comparison servlet/src/digilib/io/ImageFileset.java @ 233:e40d8b2e3978

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Servlet version 1.19b1 -- with context metadata - reads and caches context tags from index meta file - for use in dlContext-xml.jsp
author robcast
date Sat, 17 Jul 2004 19:25:26 +0200
parents afe7ff98bb71
children beed92ee6022
comparison
equal deleted inserted replaced
232:69b616b50431 233:e40d8b2e3978
34 /** this is an image file */ 34 /** this is an image file */
35 protected static int fileClass = FileOps.CLASS_IMAGE; 35 protected static int fileClass = FileOps.CLASS_IMAGE;
36 36
37 /** list of files (ImageFile) */ 37 /** list of files (ImageFile) */
38 private ArrayList list = null; 38 private ArrayList list = null;
39
39 /** aspect ratio (width/height) */ 40 /** aspect ratio (width/height) */
40 private double aspect = 0; 41 private double aspect = 0;
42
41 /** resolution of the biggest image (DPI) */ 43 /** resolution of the biggest image (DPI) */
42 private double resX = 0; 44 private double resX = 0;
45
43 /** resolution of the biggest image (DPI) */ 46 /** resolution of the biggest image (DPI) */
44 private double resY = 0; 47 private double resY = 0;
45 48
46 /** 49 /**
47 * Creator for empty fileset with size for file list. 50 * Creator for empty fileset with size for file list.
60 * other base directories. First entry in dirs is the parent of this 63 * other base directories. First entry in dirs is the parent of this
61 * fileset. 64 * fileset.
62 * 65 *
63 * 66 *
64 * @see fill 67 * @see fill
65 * 68 *
66 * @param dirs 69 * @param dirs
67 * array of base directories 70 * array of base directories
68 * @param file 71 * @param file
69 * first file to read 72 * first file to read
70 * @param scalext 73 * @param scalext
71 * extension for scaled images 74 * extension for scaled images
72 */ 75 */
73 public ImageFileset(Directory[] dirs, File file, String scalext) { 76 public ImageFileset(Directory[] dirs, File file, String scalext) {
74 int nb = dirs.length; 77 int nb = dirs.length;
75 list = new ArrayList(nb); 78 list = new ArrayList(nb);
76 parent = dirs[0]; 79 parent = dirs[0];
83 * The files should be added in the order of higher to lower resolutions. 86 * The files should be added in the order of higher to lower resolutions.
84 * The first file is considered the hires "original". 87 * The first file is considered the hires "original".
85 * 88 *
86 * 89 *
87 * @param f 90 * @param f
88 * file to add 91 * file to add
89 * @return true (always) 92 * @return true (always)
90 */ 93 */
91 public boolean add(ImageFile f) { 94 public boolean add(ImageFile f) {
92 f.setParent(this); 95 f.setParent(this);
93 return list.add(f); 96 return list.add(f);
123 } 126 }
124 127
125 /** 128 /**
126 * Get the next smaller ImageFile than the given size. 129 * Get the next smaller ImageFile than the given size.
127 * 130 *
128 * Returns the ImageFile from the set that has a width and height smaller 131 * Returns the ImageFile from the set that has a width and height smaller or
129 * or equal the given size. Returns null if there isn't any smaller image. 132 * equal the given size. Returns null if there isn't any smaller image.
130 * Needs DocuInfo instance to checkFile(). 133 * Needs DocuInfo instance to checkFile().
131 * 134 *
132 * 135 *
133 * @param size 136 * @param size
134 * @param info 137 * @param info
152 155
153 /** 156 /**
154 * Get the next bigger ImageFile than the given size. 157 * Get the next bigger ImageFile than the given size.
155 * 158 *
156 * Returns the ImageFile from the set that has a width or height bigger or 159 * Returns the ImageFile from the set that has a width or height bigger or
157 * equal the given size. Returns null if there isn't any bigger image. 160 * equal the given size. Returns null if there isn't any bigger image. Needs
158 * Needs DocuInfo instance to checkFile(). 161 * DocuInfo instance to checkFile().
159 * 162 *
160 * 163 *
161 * @param size 164 * @param size
162 * @param info 165 * @param info
163 * @return 166 * @return
226 /** 229 /**
227 * Fill the ImageFileset with files from different base directories. 230 * Fill the ImageFileset with files from different base directories.
228 * 231 *
229 * 232 *
230 * @param dirs 233 * @param dirs
231 * list of base directories 234 * list of base directories
232 * @param fl 235 * @param fl
233 * file (from first base dir) 236 * file (from first base dir)
234 * @param scalext 237 * @param scalext
235 * first extension to try in other base dirs 238 * first extension to try in other base dirs
236 */ 239 */
237 void fill(Directory[] dirs, File fl, String scalext) { 240 void fill(Directory[] dirs, File fl, String scalext) {
238 int nb = dirs.length; 241 int nb = dirs.length;
239 String fn = fl.getName(); 242 String fn = fl.getName();
240 String fnx = fn.substring(0, fn.lastIndexOf('.') + 1); 243 String fnx = fn.substring(0, fn.lastIndexOf('.') + 1);
284 if (fileMeta == null) { 287 if (fileMeta == null) {
285 // try to read metadata file 288 // try to read metadata file
286 readMeta(); 289 readMeta();
287 if (fileMeta == null) { 290 if (fileMeta == null) {
288 // try directory metadata 291 // try directory metadata
292 ((DocuDirectory) parent).checkMeta();
289 if (((DocuDirectory) parent).getDirMeta() != null) { 293 if (((DocuDirectory) parent).getDirMeta() != null) {
290 fileMeta = ((DocuDirectory) parent).getDirMeta(); 294 fileMeta = ((DocuDirectory) parent).getDirMeta();
291 } else { 295 } else {
292 // no metadata available 296 // try parent directory metadata
293 metaChecked = true; 297 DocuDirectory gp = (DocuDirectory) parent.getParent();
294 return; 298 if (gp != null) {
299 gp.checkMeta();
300 if (gp.getDirMeta() != null) {
301 fileMeta = gp.getDirMeta();
302 } else {
303 // no metadata available
304 metaChecked = true;
305 return;
306 }
307 }
295 } 308 }
296 } 309 }
297 } 310 }
298 metaChecked = true; 311 metaChecked = true;
299 String s; 312 String s;
316 return; 329 return;
317 } 330 }
318 } 331 }
319 // DPI-X and DPI-Y 332 // DPI-X and DPI-Y
320 if (fileMeta.containsKey("original-dpi-x") 333 if (fileMeta.containsKey("original-dpi-x")
321 && fileMeta.containsKey("original-dpi-y")) { 334 && fileMeta.containsKey("original-dpi-y")) {
322 try { 335 try {
323 dpix = 336 dpix = Double.parseDouble((String) fileMeta
324 Double.parseDouble((String) fileMeta.get("original-dpi-x")); 337 .get("original-dpi-x"));
325 dpiy = 338 dpiy = Double.parseDouble((String) fileMeta
326 Double.parseDouble((String) fileMeta.get("original-dpi-y")); 339 .get("original-dpi-y"));
327 } catch (NumberFormatException e) { 340 } catch (NumberFormatException e) {
328 } 341 }
329 if ((dpix != 0) && (dpiy != 0)) { 342 if ((dpix != 0) && (dpiy != 0)) {
330 resX = dpix; 343 resX = dpix;
331 resY = dpiy; 344 resY = dpiy;
332 return; 345 return;
333 } 346 }
334 } 347 }
335 // SIZE-X and SIZE-Y and PIXEL-X and PIXEL-Y 348 // SIZE-X and SIZE-Y and PIXEL-X and PIXEL-Y
336 if (fileMeta.containsKey("original-size-x") 349 if (fileMeta.containsKey("original-size-x")
337 && fileMeta.containsKey("original-size-y") 350 && fileMeta.containsKey("original-size-y")
338 && fileMeta.containsKey("original-pixel-x") 351 && fileMeta.containsKey("original-pixel-x")
339 && fileMeta.containsKey("original-pixel-y")) { 352 && fileMeta.containsKey("original-pixel-y")) {
340 try { 353 try {
341 sizex = 354 sizex = Double.parseDouble((String) fileMeta
342 Double.parseDouble( 355 .get("original-size-x"));
343 (String) fileMeta.get("original-size-x")); 356 sizey = Double.parseDouble((String) fileMeta
344 sizey = 357 .get("original-size-y"));
345 Double.parseDouble( 358 pixx = Double.parseDouble((String) fileMeta
346 (String) fileMeta.get("original-size-y")); 359 .get("original-pixel-x"));
347 pixx = 360 pixy = Double.parseDouble((String) fileMeta
348 Double.parseDouble( 361 .get("original-pixel-y"));
349 (String) fileMeta.get("original-pixel-x"));
350 pixy =
351 Double.parseDouble(
352 (String) fileMeta.get("original-pixel-y"));
353 } catch (NumberFormatException e) { 362 } catch (NumberFormatException e) {
354 } 363 }
355 if ((sizex != 0) && (sizey != 0) && (pixx != 0) && (pixy != 0)) { 364 if ((sizex != 0) && (sizey != 0) && (pixx != 0) && (pixy != 0)) {
356 resX = pixx / (sizex * 100 / 2.54); 365 resX = pixx / (sizex * 100 / 2.54);
357 resY = pixy / (sizey * 100 / 2.54); 366 resY = pixy / (sizey * 100 / 2.54);
385 } 394 }
386 395
387 /** 396 /**
388 * Returns the aspect ratio. 397 * Returns the aspect ratio.
389 * 398 *
390 * Aspect ratio is (width/height). So it's <1 for portrait and >1 for 399 * Aspect ratio is (width/height). So it's <1 for portrait and >1 for
391 * landscape. 400 * landscape.
392 * 401 *
393 * 402 *
394 * @return 403 * @return
395 */ 404 */