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1
29
30 package com.caucho.quercus.lib.pdf;
31
32 import com.caucho.quercus.QuercusModuleException;
33 import com.caucho.util.L10N;
34 import com.caucho.vfs.TempBuffer;
35 import com.caucho.vfs.TempStream;
36 import com.caucho.vfs.WriteStream;
37
38 import java.io.IOException  ;
39 import java.util.logging.Logger ;
40
41
44 public class PDFStream {
45 private static final Logger log
46 = Logger.getLogger(PDFStream.class.getName());
47 private static final L10N L = new L10N(PDFStream.class);
48
49 private int _id;
50
51 private TempStream _tempStream = new TempStream();
52 private WriteStream _out = new WriteStream();
53
54 private PDFProcSet _procSet;
55 private PDFFont _font;
56 private double _fontSize = 24;
57
58 private boolean _inText;
59 private boolean _hasFont;
60 private boolean _hasTextPos = true;
61 private double _textX = 0;
62 private double _textY = 0;
63
64 private double _x = 0;
65 private double _y = 0;
66 private boolean _hasGraphicsPos = true;
67
68 PDFStream(int id)
69 {
70 _id = id;
71
72 _tempStream = new TempStream();
73 _tempStream.openWrite();
74 _out.init(_tempStream);
75
76 _procSet = new PDFProcSet();
77 _procSet.add("/PDF");
78
79 _font = null;
80 _inText = false;
81 _hasFont = false;
82 _hasTextPos = true;
83 _hasGraphicsPos = true;
84 }
85
86 public int getId()
87 {
88 return _id;
89 }
90
91 public void setFont(PDFFont font, double size)
92 {
93 _font = font;
94 _fontSize = size;
95 _hasFont = false;
96 }
97
98 public PDFFont getFont()
99 {
100 return _font;
101 }
102
103 public double getFontSize()
104 {
105 return _fontSize;
106 }
107
108 public void setTextPos(double x, double y)
109 {
110 _textX = x;
111 _textY = y;
112 _hasTextPos = false;
113 }
114
115 public void stroke()
116 {
117 flushToGraph();
118
119 println("S");
120 }
121
122 public void closepath()
123 {
124 flushToGraph();
125
126 println("h");
127 }
128
129 public void clip()
130 {
131 flushToGraph();
132
133 println("W");
134 }
135
136 public void curveTo(double x1, double y1,
137 double x2, double y2,
138 double x3, double y3)
139 {
140 flushToGraph();
141
142 if (x1 == x2 && y1 == y2) {
143 println(x1 + " " + y1 + " " +
144 x3 + " " + y3 + " y");
145 }
146 else if (x2 == x3 && y2 == y3) {
147 println(x1 + " " + y1 + " " +
148 x2 + " " + y2 + " v");
149 }
150 else {
151 println(x1 + " " + y1 + " " +
152 x2 + " " + y2 + " " +
153 x3 + " " + y3 + " c");
154 }
155
156 _x = x3;
157 _y = y3;
158 _hasGraphicsPos = true;
159 }
160
161 public void endpath()
162 {
163 flushToGraph();
164
165 println("n");
166 }
167
168 public void closepathStroke()
169 {
170 flushToGraph();
171
172 println("s");
173 }
174
175 public void closepathFillStroke()
176 {
177 flushToGraph();
178
179 println("b");
180 }
181
182 public void fill()
183 {
184 flushToGraph();
185
186 println("f");
187 }
188
189 public void fillStroke()
190 {
191 flushToGraph();
192
193 println("B");
194 }
195
196 public void lineTo(double x, double y)
197 {
198 flushToGraph();
199
200 if (x != _x || y != _y || ! _hasGraphicsPos)
201 println(x + " " + y + " l");
202
203 _x = x;
204 _y = y;
205 _hasGraphicsPos = true;
206 }
207
208 public void rect(double x, double y, double w, double h)
209 {
210 flushToGraph();
211
212 println(x + " " + y + " " + w + " " + h + " re");
213 }
214
215 public void moveTo(double x, double y)
216 {
217 if (_x != x || _y != y) {
218 _x = x;
219 _y = y;
220 _hasGraphicsPos = false;
221 }
222 }
223
224 public static int STROKE = 1;
225 public static int FILL = 2;
226 public static int BOTH = 3;
227
228 public boolean setcolor(String fstype, String colorspace,
229 double c1, double c2, double c3, double c4)
230 {
231 flushToGraph();
232
233 int type;
234 if ("both".equals(fstype) || "fillstroke".equals(fstype))
235 type = BOTH;
236 else if ("fill".equals(fstype))
237 type = FILL;
238 else if ("stroke".equals(fstype))
239 type = STROKE;
240 else
241 return false;
242
243 if ("gray".equals(colorspace)) {
244 if ((type & STROKE) != 0)
245 println(c1 + " G");
246 if ((type & FILL) != 0)
247 println(c1 + " g");
248
249 return true;
250 }
251 else if ("rgb".equals(colorspace)) {
252 if ((type & STROKE) != 0)
253 println(c1 + " " + c2 + " " + c3 + " RG");
254 if ((type & FILL) != 0)
255 println(c1 + " " + c2 + " " + c3 + " rg");
256
257 return true;
258 }
259 else if ("cmyk".equals(colorspace)) {
260 if ((type & STROKE) != 0)
261 println(c1 + " " + c2 + " " + c3 + " " + c4 + " K");
262 if ((type & FILL) != 0)
263 println(c1 + " " + c2 + " " + c3 + " " + c4 + " k");
264
265 return true;
266 }
267 else {
268
270 return false;
271 }
272 }
273
274 public void setDash(double b, double w)
275 {
276 println("[" + b + " " + w + "] 0 d");
277 }
278
279 public boolean setlinewidth(double w)
280 {
281 println(w + " w");
282
283 return true;
284 }
285
286
289 public boolean save()
290 {
291 println("q");
292
293 return true;
294 }
295
296
299 public boolean restore()
300 {
301 println("Q");
302
303 return true;
304 }
305
306 public boolean concat(double a, double b, double c,
307 double d, double e, double f)
308 {
309 println(String.format("%.4f %.4f %.4f %.4f %.4f %.4f cm",
310 a, b, c, d, e, f));
311
312 return true;
313 }
314
315 public void show(String text)
316 {
317 _procSet.add("/Text");
318
319 if (! _inText) {
320 println("BT");
321 _inText = true;
322 }
323
324 if (! _hasFont && _font != null) {
325 println("/" + _font.getPDFName() + " " + _fontSize + " Tf");
326 _hasFont = true;
327 }
328
329 if (! _hasTextPos) {
330 println(_textX + " " + _textY + " Td");
331 _hasTextPos = true;
332 }
333
334 println("(" + text + ") Tj");
335 }
336
337 public void continue_text(String text)
338 {
339 println("(" + text + ") T*");
340 }
341
342 public boolean fit_image(PDFImage img)
343 {
344 _procSet.add("/ImageB");
345 _procSet.add("/ImageC");
346 _procSet.add("/ImageI");
347
348 println("/I" + img.getId() + " Do");
349
350 return true;
351 }
352
353 public void flushToGraph()
354 {
355 try {
356 flush();
357
358 if (! _hasGraphicsPos) {
359 _out.println(_x + " " + _y + " m");
360 _hasGraphicsPos = true;
361 }
362 } catch (IOException e) {
363 throw new QuercusModuleException(e);
364 }
365 }
366
367 private void println(String s)
368 {
369 try {
370 _out.println(s);
371 } catch (IOException e) {
372 throw new QuercusModuleException(e);
373 }
374 }
375
376 public void flush()
377 {
378 try {
379 if (_inText) {
380 _out.println("ET");
381 _inText = false;
382 }
383
384 _out.flush();
385 } catch (IOException e) {
386 throw new QuercusModuleException(e);
387 }
388 }
389
390 public PDFProcSet getProcSet()
391 {
392 return _procSet;
393 }
394
395 public int getLength()
396 {
397 try {
398 _out.flush();
399
400 return _tempStream.getLength();
401 } catch (IOException e) {
402 throw new QuercusModuleException(e);
403 }
404 }
405
406 public void write(PDFWriter out)
407 throws IOException
408 {
409 out.writeStream(getId(), this);
410 }
411
412 public void writeToStream(WriteStream os)
413 throws IOException
414 {
415 for (TempBuffer head = _tempStream.getHead();
416 head != null;
417 head = head.getNext()) {
418 os.write(head.getBuffer(), 0, head.getLength());
419 }
420
421 TempBuffer.freeAll(_tempStream.getHead());
422 }
423 }
424 |
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