|
1
4
5 package com.etymon.pj;
6
7 import java.util.*;
8 import java.io.*;
9 import java.nio.*;
10 import com.etymon.pj.exception.*;
11 import com.etymon.pj.object.*;
12 import com.etymon.pj.object.pagemark.*;
13 import com.etymon.pjx.*;
14 import com.etymon.pjx.util.*;
15
16
20 public class PjxConvert {
21
22 protected static final PdfName PDFNAME_LENGTH = new PdfName("Length");
23
24 public static PjObject toPjObject(PdfObject obj) throws com.etymon.pj.exception.PdfFormatException {
25
26 if (obj instanceof PdfNull) {
27 return new PjNull();
28 }
29
30 if (obj instanceof PdfBoolean) {
31 return new PjBoolean( ((PdfBoolean)obj).getBoolean() );
32 }
33
34 if (obj instanceof PdfInteger) {
35 return new PjNumber( (float)((PdfInteger)obj).getInt() );
36 }
37
38 if (obj instanceof PdfFloat) {
39 return new PjNumber( ((PdfFloat)obj).getFloat() );
40 }
41
42 if (obj instanceof PdfString) {
43 return new PjString( ((PdfString)obj).getString() );
44 }
45
46 if (obj instanceof PdfName) {
47 return new PjName( ((PdfName)obj).getString() );
48 }
49
50 if (obj instanceof PdfArray) {
51 List list = ((PdfArray)obj).getList();
52 Vector v = new Vector();
53 for (Iterator it = list.iterator(); it.hasNext(); ) {
54 v.addElement( toPjObject((PdfObject)it.next()) );
55 }
56 return new PjArray(v);
57 }
58
59 if (obj instanceof PdfDictionary) {
60 Map map = ((PdfDictionary)obj).getMap();
61 Hashtable h = new Hashtable();
62 for (Iterator it = map.keySet().iterator(); it.hasNext(); ) {
63 Object  key = it.next();
64 h.put(toPjObject((PdfObject)key), toPjObject((PdfObject)map.get(key)) );
65 }
66
67 PjDictionary dictionary = new PjDictionary(h);
69 if (PjPage.isLike(dictionary)) {
70 return new PjPage(h);
71 }
72 else if (PjPages.isLike(dictionary)) {
73 return new PjPages(h);
74 }
75 else if (PjFontType1.isLike(dictionary)) {
76 return new PjFontType1(h);
77 }
78 else if (PjFontDescriptor.isLike(dictionary)) {
79 return new PjFontDescriptor(h);
80 }
81 else if (PjResources.isLike(dictionary)) {
82 return new PjResources(h);
83 }
84 else if (PjCatalog.isLike(dictionary)) {
85 return new PjCatalog(h);
86 }
87 else if (PjInfo.isLike(dictionary)) {
88 return new PjInfo(h);
89 }
90 else if (PjEncoding.isLike(dictionary)) {
91 return new PjEncoding(h);
92 }
93 else {
94 return dictionary;
95 }
96 }
97
98 if (obj instanceof PdfStream) {
99 PdfStream stream = (PdfStream)obj;
100 PjDictionary d = (PjDictionary)(toPjObject(stream.getDictionary()));
101 ByteBuffer streambuffer = stream.getBuffer();
102 byte[] ba = new byte[streambuffer.capacity()];
103 streambuffer.position(0);
104 streambuffer.limit(streambuffer.capacity());
105 streambuffer.get(ba);
106 return new PjStream(new PjStreamDictionary(d.getHashtable()), ba);
107 }
108
109 if (obj instanceof PdfReference) {
110 PdfReference ref = (PdfReference)obj;
111 return new PjReference(new PjNumber(ref.getObjectNumber()),
112 new PjNumber(ref.getGenerationNumber()) );
113 }
114
115 throw new com.etymon.pj.exception.PdfFormatException("Error converting object from PJX format.");
116
117 }
118
119 public static PdfObject toPjxObject(PjObject obj) throws com.etymon.pj.exception.PdfFormatException {
120
121 if (obj instanceof PjNull) {
122 return PdfNull.valueOf();
123 }
124
125 if (obj instanceof PjBoolean) {
126 return PdfBoolean.valueOf( ((PjBoolean)obj).getBoolean() );
127 }
128
129 if (obj instanceof PjNumber) {
130 PjNumber n = (PjNumber)obj;
131 float f = n.getFloat();
132 int x = n.getInt();
133 if (f == x) {
134 return new PdfInteger(x);
135 } else {
136 return new PdfFloat(f);
137 }
138 }
139
140 if (obj instanceof PjString) {
141 return new PdfString( ((PjString)obj).getString() );
142 }
143
144 if (obj instanceof PjName) {
145 return new PdfName( ((PjName)obj).getString() );
146 }
147
148 if (obj instanceof PjArray) {
149 Vector v = ((PjArray)obj).getVector();
150 int vsize = v.size();
151 ArrayList list = new ArrayList(vsize);
152 for (int x = 0; x < vsize; x++) {
153 list.add( toPjxObject((PjObject)v.elementAt(x)) );
154 }
155 return new PdfArray(list);
156 }
157
158 if (obj instanceof PjDictionary) {
159 Hashtable h = ((PjDictionary)obj).getHashtable();
160 HashMap map = new HashMap(h.size());
161 for (Enumeration m = h.keys(); m.hasMoreElements();) {
162 PjObject key = (PjObject)m.nextElement();
163 PjObject value = (PjObject)h.get(key);
164 map.put( toPjxObject(key), toPjxObject(value) );
165 }
166 return new PdfDictionary(map);
167 }
168
169 if (obj instanceof PjStream) {
170 PjStream os = (PjStream)obj;
171 byte[] ob = os.getBuffer();
172 ByteBuffer buffer = ByteBuffer.allocateDirect(ob.length);
173 buffer.put(ob);
174 Map map = ((PdfDictionary)toPjxObject(os.getStreamDictionary())).getMap();
175 HashMap dictionary = new HashMap(map.size());
176 dictionary.putAll(map);
177 dictionary.put(PDFNAME_LENGTH, new PdfInteger(ob.length));
178 buffer.position(0);
179 return new PdfStream(new PdfDictionary(dictionary), buffer);
180 }
181
182 if (obj instanceof PjReference) {
183 PjReference r = (PjReference)obj;
184 return new PdfReference( r.getObjNumber().getInt(),
185 r.getGenNumber().getInt() );
186 }
187
188 throw new com.etymon.pj.exception.PdfFormatException("Error converting object from PJ format.");
189
190 }
191
192
198 public static List pjxGetFields(PdfManager manager) throws IOException, com.etymon.pjx.PdfFormatException {
199
200 synchronized (manager) {
201
202 PdfModifier mod = new PdfModifier(manager);
203
204 ArrayList fieldList = new ArrayList();
205
206 PdfDictionary catalog = mod.getCatalog();
208
209 PdfDictionary acroForm;
211 try {
212 acroForm = (PdfDictionary)(manager.getObjectIndirect(
213 (PdfObject)catalog.getMap().get(new PdfName("AcroForm")) ));
214 }
215 catch (ClassCastException e) {
216 throw new com.etymon.pjx.PdfFormatException("AcroForm object is not a dictionary.");
217 }
218
219 if (acroForm == null) {
220 return fieldList;
221 }
222
223
226 PdfArray fields = (PdfArray)(acroForm.getMap().get(new PdfName("Fields")));
228 if (fields == null) {
229 return fieldList;
230 }
231 List fieldsV = fields.getList();
232
233 int fieldsV_n = fieldsV.size();
235 for (int x = 0; x < fieldsV_n; x++) {
236
237 PdfReference fieldRef;
239 try {
240 fieldRef = (PdfReference)(fieldsV.get(x));
241 }
242 catch (ClassCastException e) {
243 throw new com.etymon.pjx.PdfFormatException("Fields array element is not a reference.");
244 }
245
246 pjxGetFieldsAddField(manager, fieldList, fieldRef);
247
248 }
249
250 return fieldList;
251 }
252 }
253
254
257 private static void pjxGetFieldsAddField(PdfManager manager, ArrayList fieldList, PdfReference fieldRef)
258 throws IOException, com.etymon.pjx.PdfFormatException {
259
260 PdfDictionary field;
262 try {
263 field = (PdfDictionary)(manager.getObjectIndirect(fieldRef));
264 }
265 catch (ClassCastException e) {
266 throw new com.etymon.pjx.PdfFormatException("Field object is not a dictionary.");
267 }
268
269 Map fieldHt = field.getMap();
270
271 fieldList.add(field);
273
274 PdfArray kids;
276 try {
277 kids = (PdfArray)(manager.getObjectIndirect((PdfObject)(fieldHt.get(new PdfName("Kids")))));
278 }
279 catch (ClassCastException e) {
280 throw new com.etymon.pjx.PdfFormatException("Kids object is not an array.");
281 }
282
283 if (kids != null) {
285 List kidsV = kids.getList();
286 int kidsV_n = kidsV.size();
287 for (int x = 0; x < kidsV_n; x++) {
288
289 PdfReference fieldRef2;
291 try {
292 fieldRef2 = (PdfReference)(kidsV.get(x));
293 }
294 catch (ClassCastException e) {
295 throw new com.etymon.pjx.PdfFormatException("Kids array element is not a reference.");
296 }
297
298 pjxGetFieldsAddField(manager, fieldList, fieldRef2);
299
300 }
301 }
302
303 }
304
305
310 public static void pjxUpdateFieldValue(PdfManager manager, PdfDictionary origField,
311 PdfDictionary field, String value)
312 throws IOException, com.etymon.pjx.PdfFormatException {
313
314 synchronized (manager) {
315
316 try {
317
318 Map origFieldHtRO = origField.getMap();
319 HashMap origFieldHt = new HashMap(origFieldHtRO.size());
320 origFieldHt.putAll(origFieldHtRO);
321
322 Map fieldHt = field.getMap();
323
324 PdfString oldValue = (PdfString)(fieldHt.get(new PdfName("V")));
326
327 PdfString valueString = new PdfString(value);
328 origFieldHt.put(new PdfName("V"), valueString);
329 origFieldHt.put(new PdfName("DV"), valueString);
330
331 PdfInteger q = (PdfInteger)(manager.getObjectIndirect((PdfObject)(fieldHt.get(new PdfName("Q")))));
333 boolean leftJustified = false;
334 boolean centered = false;
335 boolean rightJustified = false;
336 if (q == null) {
337 leftJustified = true;
338 } else {
339 switch (q.getInt()) {
340 case 1:
341 centered = true;
342 break;
343 case 2:
344 rightJustified = true;
345 break;
346 default:
347 leftJustified = true;
348 }
349 }
350
351 PdfDictionary ap = (PdfDictionary)(manager.getObjectIndirect((PdfObject)(fieldHt.get(new PdfName("AP")))));
352 if (ap != null) {
353 Map apHtReadOnly = ap.getMap();
354 HashMap apHt = new HashMap(apHtReadOnly.size());
355 apHt.putAll(apHtReadOnly);
356 PdfObject apnObj = (PdfObject)(apHt.get(new PdfName("N")));
357 int apnId;
358 PdfReference apnRef;
359 PdfObject apn;
360 PdfDictionary apnDict;
361 byte[] apnBuffer;
362 if (apnObj instanceof PdfReference) {
363 apnRef = (PdfReference)apnObj;
365 apnId = apnRef.getObjectNumber();
366 apn = manager.getObjectIndirect(apnRef);
367 } else {
368 apnId = manager.addObject(apnObj);
370 apnRef = new PdfReference(apnId, 0);
371 apHt.put(new PdfName("N"), apnRef);
372 apn = apnObj;
373 }
374
375
381 float rectX1 = 0;
382 float rectX2 = 0;
383 float rectWidth = 0;
384 if (centered) {
385 PdfArray rect =
387 (PdfArray)(fieldHt.get(new PdfName("Rect")));
388 List rectList = rect.getList();
389 rectX1 = ((PdfNumber)rectList.get(0)).getFloat();
390 rectX2 = ((PdfNumber)rectList.get(2)).getFloat();
391 rectWidth = rectX2 - rectX1;
392 }
393
394 if ( (apn != null) && (apn instanceof PdfStream) ) {
395 PjStream apnPj = (PjStream)PjxConvert.toPjObject(apn);
398 Vector pmVector = new StreamParser().parse(
399 apnPj.flateDecompress());
400 if (oldValue != null) {
401 pjxReplaceTextData(pmVector, oldValue, valueString);
402 }
403 if (centered) {
404 pjxAdjustTextMatrixX(pmVector, rectWidth);
405 }
406 ByteArrayOutputStream baos =
408 new ByteArrayOutputStream();
409 for (int pmX = 0; pmX < pmVector.size(); pmX++) {
410 PageMark pm = (PageMark)(pmVector.elementAt(pmX));
411 try {
412 pm.writePdf(baos);
413 }
414 catch (IOException e) {
415 e.printStackTrace();
416 }
417 }
418 byte[] ba = baos.toByteArray();
419 PjStream temp = new PjStream( apnPj.getStreamDictionary(), ba );
420 manager.setObject(PjxConvert.toPjxObject(temp), apnId);
421 }
422 }
423 }
424 catch (com.etymon.pj.exception.PdfFormatException e) {
425 throw new com.etymon.pjx.PdfFormatException(e.getMessage());
426 }
427 catch (com.etymon.pj.exception.InvalidPdfObjectException f) {
428 throw new com.etymon.pjx.PdfFormatException(f.getMessage());
429 }
430 }
431 }
432
433
437 private static void pjxReplaceTextData(Vector pmVector, PdfString oldText, PdfString newText)
438 throws com.etymon.pj.exception.PdfFormatException {
439
440
442 int pmX = pmVector.size();
443
444 PjString oldTextPj = (PjString)PjxConvert.toPjObject(oldText);
445 PjString newTextPj = (PjString)PjxConvert.toPjObject(newText);
446
447 while (pmX > 0) {
450
451 pmX--;
452 PageMark pm = (PageMark)(pmVector.elementAt(pmX));
453
454 if (pm instanceof XTj) {
455 XTj tj = (XTj)pm;
456 if (tj.getText().equals(oldTextPj)) {
457 XTj newTj = new XTj(newTextPj);
458 pmVector.setElementAt(newTj, pmX);
459 }
460 }
461
462 }
463 }
464
465
469 private static void pjxAdjustTextMatrixX(Vector pmVector, float rectWidth) {
470
475 int pmX = pmVector.size();
476 float textWidth = 0;
477 float rectCenter = rectWidth / 2;
478
479 while (pmX > 0) {
480
481 pmX--;
482 PageMark pm = (PageMark)(pmVector.elementAt(pmX));
483
484 if (pm instanceof XTj) {
485 XTj tj = (XTj)pm;
486 textWidth = tj.getText().getString().length() * 6;
487 }
488
489 if (pm instanceof XTm) {
490 float newX = rectCenter - (textWidth / 2);
491 if (newX < 0) {
492 newX = 0;
493 }
494 XTm tm = (XTm)pm;
495 XTm newTm = new XTm(
496 tm.getA(),
497 tm.getB(),
498 tm.getC(),
499 tm.getD(),
500 new PjNumber(newX),
501 tm.getY());
502 pmVector.setElementAt(newTm, pmX);
503 pmX = 0; }
505
506 }
507 }
508
509
513 private static void pjxClearTextMatrixX(Vector pmVector) {
514
517 int pmX = pmVector.size();
518
519 while (pmX > 0) {
520
521 pmX--;
522 PageMark pm = (PageMark)(pmVector.elementAt(pmX));
523
524 if (pm instanceof XTm) {
525 XTm tm = (XTm)pm;
526 XTm newTm = new XTm(
527 tm.getA(),
528 tm.getB(),
529 tm.getC(),
530 tm.getD(),
531 PjNumber.ZERO,
532 tm.getY());
533 pmVector.setElementAt(newTm, pmX);
534 pmX = 0; }
536
537 }
538 }
539
540
559 public static PdfDictionary pjxInheritFieldAttributes(PdfManager manager, PdfDictionary d)
560 throws IOException, com.etymon.pjx.PdfFormatException {
561 synchronized (manager) {
562 try {
563 PjDictionary node = (PjDictionary)PjxConvert.toPjObject(d);
564 PjDictionary newNode;
565 try {
566 newNode = (PjDictionary)(node.clone());
567 }
568 catch (CloneNotSupportedException e) {
569 throw new com.etymon.pj.exception.InvalidPdfObjectException(e.getMessage());
570 }
571 Hashtable ht = newNode.getHashtable();
572 PjObject parentRef = (PjObject)(newNode.getHashtable().get(PjName.PARENT));
573 while (parentRef != null) {
574 PjObject parentObj = PjxConvert.toPjObject(
575 manager.getObjectIndirect(PjxConvert.toPjxObject(parentRef)));
576 if ( ! (parentObj instanceof PjDictionary) ) {
577 throw new com.etymon.pj.exception.InvalidPdfObjectException("Ancestor of field node is not a dictionary.");
578 }
579 PjDictionary parent = (PjDictionary)parentObj;
580 pjxInheritFieldAttributesCollapse(PjName.FT, ht, newNode, parent);
581 pjxInheritFieldAttributesCollapse(PjName.V, ht, newNode, parent);
582 pjxInheritFieldAttributesCollapse(PjName.DV, ht, newNode, parent);
583 pjxInheritFieldAttributesCollapse(PjName.FF, ht, newNode, parent);
584 pjxInheritFieldAttributesCollapse(PjName.DR, ht, newNode, parent);
585 pjxInheritFieldAttributesCollapse(PjName.DA, ht, newNode, parent);
586 pjxInheritFieldAttributesCollapse(PjName.Q, ht, newNode, parent);
587 pjxInheritFieldAttributesCollapse(PjName.OPT, ht, newNode, parent);
588 pjxInheritFieldAttributesCollapse(PjName.TOPINDEX, ht, newNode, parent);
589 pjxInheritFieldAttributesCollapse(PjName.MAXLEN, ht, newNode, parent);
590 parentRef = (PjObject)(parent.getHashtable().get(PjName.PARENT));
591 }
592 return (PdfDictionary)PjxConvert.toPjxObject(newNode);
593 }
594 catch (com.etymon.pj.exception.PdfFormatException e) {
595 throw new com.etymon.pjx.PdfFormatException(e.getMessage());
596 }
597 catch (com.etymon.pj.exception.InvalidPdfObjectException f) {
598 throw new com.etymon.pjx.PdfFormatException(f.getMessage());
599 }
600 }
601 }
602
603
607 private static void pjxInheritFieldAttributesCollapse(
608 PjName name, Hashtable ht, PjDictionary newNode, PjDictionary parent) {
609
610 if (ht.get(name) == null) {
611 Object obj = parent.getHashtable().get(name);
612 if (obj != null) {
613 ht.put(name, obj);
614 }
615 }
616 }
617
618 }
619 |
Popular Tags |
Java API By Example, From Geeks To Geeks.