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9c72faab | 1 | //======================================================================== |
2 | // | |
3 | // GfxState.h | |
4 | // | |
5 | // Copyright 1996 Derek B. Noonburg | |
6 | // | |
7 | //======================================================================== | |
8 | ||
9 | #ifndef GFXSTATE_H | |
10 | #define GFXSTATE_H | |
11 | ||
12 | #ifdef __GNUC__ | |
13 | #pragma interface | |
14 | #endif | |
15 | ||
16 | #include "gtypes.h" | |
b5cb0608 | 17 | #include "Object.h" |
9c72faab | 18 | |
b5cb0608 | 19 | class Array; |
9c72faab | 20 | class Function; |
21 | class GfxFont; | |
22 | ||
52118ca3 | 23 | //------------------------------------------------------------------------ |
b5cb0608 | 24 | // GfxColor |
52118ca3 | 25 | //------------------------------------------------------------------------ |
26 | ||
b5cb0608 | 27 | #define gfxColorMaxComps 8 |
28 | ||
29 | struct GfxColor { | |
30 | double c[gfxColorMaxComps]; | |
52118ca3 | 31 | }; |
32 | ||
9c72faab | 33 | //------------------------------------------------------------------------ |
b5cb0608 | 34 | // GfxRGB |
35 | //------------------------------------------------------------------------ | |
36 | ||
37 | struct GfxRGB { | |
38 | double r, g, b; | |
39 | }; | |
40 | ||
41 | //------------------------------------------------------------------------ | |
42 | // GfxCMYK | |
43 | //------------------------------------------------------------------------ | |
44 | ||
45 | struct GfxCMYK { | |
46 | double c, m, y, k; | |
47 | }; | |
48 | ||
9c72faab | 49 | //------------------------------------------------------------------------ |
b5cb0608 | 50 | // GfxColorSpace |
51 | //------------------------------------------------------------------------ | |
52 | ||
53 | enum GfxColorSpaceMode { | |
54 | csDeviceGray, | |
55 | csCalGray, | |
56 | csDeviceRGB, | |
57 | csCalRGB, | |
58 | csDeviceCMYK, | |
59 | csLab, | |
60 | csICCBased, | |
61 | csIndexed, | |
62 | csSeparation, | |
63 | csDeviceN, | |
64 | csPattern | |
65 | }; | |
9c72faab | 66 | |
b5cb0608 | 67 | class GfxColorSpace { |
9c72faab | 68 | public: |
69 | ||
b5cb0608 | 70 | GfxColorSpace(); |
71 | virtual ~GfxColorSpace(); | |
72 | virtual GfxColorSpace *copy() = 0; | |
73 | virtual GfxColorSpaceMode getMode() = 0; | |
9c72faab | 74 | |
b5cb0608 | 75 | // Construct a color space. Returns NULL if unsuccessful. |
76 | static GfxColorSpace *parse(Object *csObj); | |
9c72faab | 77 | |
b5cb0608 | 78 | // Convert to gray, RGB, or CMYK. |
79 | virtual void getGray(GfxColor *color, double *gray) = 0; | |
80 | virtual void getRGB(GfxColor *color, GfxRGB *rgb) = 0; | |
81 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk) = 0; | |
82 | ||
83 | // Return the number of color components. | |
84 | virtual int getNComps() = 0; | |
85 | ||
86 | // Return the default ranges for each component, assuming an image | |
87 | // with a max pixel value of <maxImgPixel>. | |
88 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
89 | int maxImgPixel); | |
9c72faab | 90 | |
91 | private: | |
b5cb0608 | 92 | }; |
9c72faab | 93 | |
b5cb0608 | 94 | //------------------------------------------------------------------------ |
95 | // GfxDeviceGrayColorSpace | |
96 | //------------------------------------------------------------------------ | |
97 | ||
98 | class GfxDeviceGrayColorSpace: public GfxColorSpace { | |
99 | public: | |
100 | ||
101 | GfxDeviceGrayColorSpace(); | |
102 | virtual ~GfxDeviceGrayColorSpace(); | |
103 | virtual GfxColorSpace *copy(); | |
104 | virtual GfxColorSpaceMode getMode() { return csDeviceGray; } | |
105 | ||
106 | virtual void getGray(GfxColor *color, double *gray); | |
107 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
108 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
109 | ||
110 | virtual int getNComps() { return 1; } | |
111 | ||
112 | private: | |
9c72faab | 113 | }; |
114 | ||
115 | //------------------------------------------------------------------------ | |
b5cb0608 | 116 | // GfxCalGrayColorSpace |
9c72faab | 117 | //------------------------------------------------------------------------ |
118 | ||
b5cb0608 | 119 | class GfxCalGrayColorSpace: public GfxColorSpace { |
120 | public: | |
121 | ||
122 | GfxCalGrayColorSpace(); | |
123 | virtual ~GfxCalGrayColorSpace(); | |
124 | virtual GfxColorSpace *copy(); | |
125 | virtual GfxColorSpaceMode getMode() { return csCalGray; } | |
126 | ||
127 | // Construct a CalGray color space. Returns NULL if unsuccessful. | |
128 | static GfxColorSpace *parse(Array *arr); | |
129 | ||
130 | virtual void getGray(GfxColor *color, double *gray); | |
131 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
132 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
133 | ||
134 | virtual int getNComps() { return 1; } | |
135 | ||
136 | // CalGray-specific access. | |
137 | double getWhiteX() { return whiteX; } | |
138 | double getWhiteY() { return whiteY; } | |
139 | double getWhiteZ() { return whiteZ; } | |
140 | double getBlackX() { return blackX; } | |
141 | double getBlackY() { return blackY; } | |
142 | double getBlackZ() { return blackZ; } | |
143 | double getGamma() { return gamma; } | |
144 | ||
145 | private: | |
146 | ||
147 | double whiteX, whiteY, whiteZ; // white point | |
148 | double blackX, blackY, blackZ; // black point | |
149 | double gamma; // gamma value | |
9c72faab | 150 | }; |
151 | ||
b5cb0608 | 152 | //------------------------------------------------------------------------ |
153 | // GfxDeviceRGBColorSpace | |
154 | //------------------------------------------------------------------------ | |
155 | ||
156 | class GfxDeviceRGBColorSpace: public GfxColorSpace { | |
9c72faab | 157 | public: |
158 | ||
b5cb0608 | 159 | GfxDeviceRGBColorSpace(); |
160 | virtual ~GfxDeviceRGBColorSpace(); | |
161 | virtual GfxColorSpace *copy(); | |
162 | virtual GfxColorSpaceMode getMode() { return csDeviceRGB; } | |
9c72faab | 163 | |
b5cb0608 | 164 | virtual void getGray(GfxColor *color, double *gray); |
165 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
166 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
9c72faab | 167 | |
b5cb0608 | 168 | virtual int getNComps() { return 3; } |
9c72faab | 169 | |
b5cb0608 | 170 | private: |
171 | }; | |
9c72faab | 172 | |
b5cb0608 | 173 | //------------------------------------------------------------------------ |
174 | // GfxCalRGBColorSpace | |
175 | //------------------------------------------------------------------------ | |
176 | ||
177 | class GfxCalRGBColorSpace: public GfxColorSpace { | |
178 | public: | |
179 | ||
180 | GfxCalRGBColorSpace(); | |
181 | virtual ~GfxCalRGBColorSpace(); | |
182 | virtual GfxColorSpace *copy(); | |
183 | virtual GfxColorSpaceMode getMode() { return csCalRGB; } | |
184 | ||
185 | // Construct a CalRGB color space. Returns NULL if unsuccessful. | |
186 | static GfxColorSpace *parse(Array *arr); | |
187 | ||
188 | virtual void getGray(GfxColor *color, double *gray); | |
189 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
190 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
191 | ||
192 | virtual int getNComps() { return 3; } | |
193 | ||
194 | // CalRGB-specific access. | |
195 | double getWhiteX() { return whiteX; } | |
196 | double getWhiteY() { return whiteY; } | |
197 | double getWhiteZ() { return whiteZ; } | |
198 | double getBlackX() { return blackX; } | |
199 | double getBlackY() { return blackY; } | |
200 | double getBlackZ() { return blackZ; } | |
201 | double getGammaR() { return gammaR; } | |
202 | double getGammaG() { return gammaG; } | |
203 | double getGammaB() { return gammaB; } | |
204 | double *getMatrix() { return m; } | |
205 | ||
206 | private: | |
207 | ||
208 | double whiteX, whiteY, whiteZ; // white point | |
209 | double blackX, blackY, blackZ; // black point | |
210 | double gammaR, gammaG, gammaB; // gamma values | |
211 | double m[9]; // ABC -> XYZ transform matrix | |
212 | }; | |
213 | ||
214 | //------------------------------------------------------------------------ | |
215 | // GfxDeviceCMYKColorSpace | |
216 | //------------------------------------------------------------------------ | |
217 | ||
218 | class GfxDeviceCMYKColorSpace: public GfxColorSpace { | |
219 | public: | |
9c72faab | 220 | |
b5cb0608 | 221 | GfxDeviceCMYKColorSpace(); |
222 | virtual ~GfxDeviceCMYKColorSpace(); | |
223 | virtual GfxColorSpace *copy(); | |
224 | virtual GfxColorSpaceMode getMode() { return csDeviceCMYK; } | |
9c72faab | 225 | |
b5cb0608 | 226 | virtual void getGray(GfxColor *color, double *gray); |
227 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
228 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
229 | ||
230 | virtual int getNComps() { return 4; } | |
231 | ||
232 | private: | |
233 | }; | |
234 | ||
235 | //------------------------------------------------------------------------ | |
236 | // GfxLabColorSpace | |
237 | //------------------------------------------------------------------------ | |
238 | ||
239 | class GfxLabColorSpace: public GfxColorSpace { | |
240 | public: | |
9c72faab | 241 | |
b5cb0608 | 242 | GfxLabColorSpace(); |
243 | virtual ~GfxLabColorSpace(); | |
244 | virtual GfxColorSpace *copy(); | |
245 | virtual GfxColorSpaceMode getMode() { return csLab; } | |
9c72faab | 246 | |
b5cb0608 | 247 | // Construct a Lab color space. Returns NULL if unsuccessful. |
248 | static GfxColorSpace *parse(Array *arr); | |
9c72faab | 249 | |
b5cb0608 | 250 | virtual void getGray(GfxColor *color, double *gray); |
251 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
252 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
52118ca3 | 253 | |
b5cb0608 | 254 | virtual int getNComps() { return 3; } |
52118ca3 | 255 | |
b5cb0608 | 256 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, |
257 | int maxImgPixel); | |
258 | ||
259 | // Lab-specific access. | |
260 | double getWhiteX() { return whiteX; } | |
261 | double getWhiteY() { return whiteY; } | |
262 | double getWhiteZ() { return whiteZ; } | |
263 | double getBlackX() { return blackX; } | |
264 | double getBlackY() { return blackY; } | |
265 | double getBlackZ() { return blackZ; } | |
266 | double getAMin() { return aMin; } | |
267 | double getAMax() { return aMax; } | |
268 | double getBMin() { return bMin; } | |
269 | double getBMax() { return bMax; } | |
270 | ||
271 | private: | |
272 | ||
273 | double whiteX, whiteY, whiteZ; // white point | |
274 | double blackX, blackY, blackZ; // black point | |
275 | double aMin, aMax, bMin, bMax; // range for the a and b components | |
276 | double kr, kg, kb; // gamut mapping mulitpliers | |
277 | }; | |
278 | ||
279 | //------------------------------------------------------------------------ | |
280 | // GfxICCBasedColorSpace | |
281 | //------------------------------------------------------------------------ | |
282 | ||
283 | class GfxICCBasedColorSpace: public GfxColorSpace { | |
284 | public: | |
285 | ||
286 | GfxICCBasedColorSpace(int nComps, GfxColorSpace *alt, | |
287 | Ref *iccProfileStream); | |
288 | virtual ~GfxICCBasedColorSpace(); | |
289 | virtual GfxColorSpace *copy(); | |
290 | virtual GfxColorSpaceMode getMode() { return csICCBased; } | |
291 | ||
292 | // Construct an ICCBased color space. Returns NULL if unsuccessful. | |
293 | static GfxColorSpace *parse(Array *arr); | |
294 | ||
295 | virtual void getGray(GfxColor *color, double *gray); | |
296 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
297 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
298 | ||
299 | virtual int getNComps() { return nComps; } | |
300 | ||
301 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
302 | int maxImgPixel); | |
303 | ||
304 | // ICCBased-specific access. | |
305 | GfxColorSpace *getAlt() { return alt; } | |
306 | ||
307 | private: | |
308 | ||
309 | int nComps; // number of color components (1, 3, or 4) | |
310 | GfxColorSpace *alt; // alternate color space | |
311 | double rangeMin[4]; // min values for each component | |
312 | double rangeMax[4]; // max values for each component | |
313 | Ref iccProfileStream; // the ICC profile | |
314 | }; | |
315 | ||
316 | //------------------------------------------------------------------------ | |
317 | // GfxIndexedColorSpace | |
318 | //------------------------------------------------------------------------ | |
319 | ||
320 | class GfxIndexedColorSpace: public GfxColorSpace { | |
321 | public: | |
322 | ||
323 | GfxIndexedColorSpace(GfxColorSpace *base, int indexHigh); | |
324 | virtual ~GfxIndexedColorSpace(); | |
325 | virtual GfxColorSpace *copy(); | |
326 | virtual GfxColorSpaceMode getMode() { return csIndexed; } | |
327 | ||
328 | // Construct a Lab color space. Returns NULL if unsuccessful. | |
329 | static GfxColorSpace *parse(Array *arr); | |
330 | ||
331 | virtual void getGray(GfxColor *color, double *gray); | |
332 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
333 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
334 | ||
335 | virtual int getNComps() { return 1; } | |
336 | ||
337 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
338 | int maxImgPixel); | |
339 | ||
340 | // Indexed-specific access. | |
341 | GfxColorSpace *getBase() { return base; } | |
9c72faab | 342 | int getIndexHigh() { return indexHigh; } |
b5cb0608 | 343 | Guchar *getLookup() { return lookup; } |
344 | ||
345 | private: | |
346 | ||
347 | GfxColorSpace *base; // base color space | |
348 | int indexHigh; // max pixel value | |
349 | Guchar *lookup; // lookup table | |
350 | }; | |
351 | ||
352 | //------------------------------------------------------------------------ | |
353 | // GfxSeparationColorSpace | |
354 | //------------------------------------------------------------------------ | |
355 | ||
356 | class GfxSeparationColorSpace: public GfxColorSpace { | |
357 | public: | |
358 | ||
359 | GfxSeparationColorSpace(GString *name, GfxColorSpace *alt, | |
360 | Function *func); | |
361 | virtual ~GfxSeparationColorSpace(); | |
362 | virtual GfxColorSpace *copy(); | |
363 | virtual GfxColorSpaceMode getMode() { return csSeparation; } | |
364 | ||
365 | // Construct a Separation color space. Returns NULL if unsuccessful. | |
366 | static GfxColorSpace *parse(Array *arr); | |
367 | ||
368 | virtual void getGray(GfxColor *color, double *gray); | |
369 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
370 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
371 | ||
372 | virtual int getNComps() { return 1; } | |
373 | ||
374 | // Separation-specific access. | |
375 | GString *getName() { return name; } | |
376 | GfxColorSpace *getAlt() { return alt; } | |
377 | Function *getFunc() { return func; } | |
378 | ||
379 | private: | |
380 | ||
381 | GString *name; // colorant name | |
382 | GfxColorSpace *alt; // alternate color space | |
383 | Function *func; // tint transform (into alternate color space) | |
384 | }; | |
385 | ||
386 | //------------------------------------------------------------------------ | |
387 | // GfxDeviceNColorSpace | |
388 | //------------------------------------------------------------------------ | |
389 | ||
390 | class GfxDeviceNColorSpace: public GfxColorSpace { | |
391 | public: | |
392 | ||
393 | GfxDeviceNColorSpace(int nComps, GfxColorSpace *alt, Function *func); | |
394 | virtual ~GfxDeviceNColorSpace(); | |
395 | virtual GfxColorSpace *copy(); | |
396 | virtual GfxColorSpaceMode getMode() { return csDeviceN; } | |
397 | ||
398 | // Construct a DeviceN color space. Returns NULL if unsuccessful. | |
399 | static GfxColorSpace *parse(Array *arr); | |
400 | ||
401 | virtual void getGray(GfxColor *color, double *gray); | |
402 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
403 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
404 | ||
405 | virtual int getNComps() { return nComps; } | |
406 | ||
407 | // DeviceN-specific access. | |
408 | GfxColorSpace *getAlt() { return alt; } | |
409 | ||
410 | private: | |
411 | ||
412 | int nComps; // number of components | |
413 | GString // colorant names | |
414 | *names[gfxColorMaxComps]; | |
415 | GfxColorSpace *alt; // alternate color space | |
416 | Function *func; // tint transform (into alternate color space) | |
417 | ||
418 | }; | |
419 | ||
420 | //------------------------------------------------------------------------ | |
421 | // GfxPatternColorSpace | |
422 | //------------------------------------------------------------------------ | |
423 | ||
424 | class GfxPatternColorSpace: public GfxColorSpace { | |
425 | public: | |
426 | ||
427 | GfxPatternColorSpace(GfxColorSpace *under); | |
428 | virtual ~GfxPatternColorSpace(); | |
429 | virtual GfxColorSpace *copy(); | |
430 | virtual GfxColorSpaceMode getMode() { return csPattern; } | |
431 | ||
432 | // Construct a Pattern color space. Returns NULL if unsuccessful. | |
433 | static GfxColorSpace *parse(Array *arr); | |
434 | ||
435 | virtual void getGray(GfxColor *color, double *gray); | |
436 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
437 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
438 | ||
439 | virtual int getNComps() { return 0; } | |
440 | ||
441 | // Pattern-specific access. | |
442 | GfxColorSpace *getUnder() { return under; } | |
443 | ||
444 | private: | |
9c72faab | 445 | |
b5cb0608 | 446 | GfxColorSpace *under; // underlying color space (for uncolored |
447 | // patterns) | |
448 | }; | |
449 | ||
450 | //------------------------------------------------------------------------ | |
451 | // GfxPattern | |
452 | //------------------------------------------------------------------------ | |
453 | ||
454 | class GfxPattern { | |
455 | public: | |
456 | ||
457 | GfxPattern(int type); | |
458 | virtual ~GfxPattern(); | |
459 | ||
460 | static GfxPattern *parse(Object *obj); | |
461 | ||
462 | virtual GfxPattern *copy() = 0; | |
463 | ||
464 | int getType() { return type; } | |
465 | ||
466 | private: | |
467 | ||
468 | int type; | |
469 | }; | |
470 | ||
471 | //------------------------------------------------------------------------ | |
472 | // GfxTilingPattern | |
473 | //------------------------------------------------------------------------ | |
474 | ||
475 | class GfxTilingPattern: public GfxPattern { | |
476 | public: | |
477 | ||
478 | GfxTilingPattern(Dict *streamDict, Object *stream); | |
479 | virtual ~GfxTilingPattern(); | |
9c72faab | 480 | |
b5cb0608 | 481 | virtual GfxPattern *copy(); |
482 | ||
483 | int getPaintType() { return paintType; } | |
484 | int getTilingType() { return tilingType; } | |
485 | double *getBBox() { return bbox; } | |
486 | double getXStep() { return xStep; } | |
487 | double getYStep() { return yStep; } | |
488 | Dict *getResDict() | |
489 | { return resDict.isDict() ? resDict.getDict() : (Dict *)NULL; } | |
490 | double *getMatrix() { return matrix; } | |
491 | Object *getContentStream() { return &contentStream; } | |
52118ca3 | 492 | |
9c72faab | 493 | private: |
494 | ||
b5cb0608 | 495 | GfxTilingPattern(GfxTilingPattern *pat); |
496 | ||
497 | int paintType; | |
498 | int tilingType; | |
499 | double bbox[4]; | |
500 | double xStep, yStep; | |
501 | Object resDict; | |
502 | double matrix[6]; | |
503 | Object contentStream; | |
9c72faab | 504 | }; |
505 | ||
506 | //------------------------------------------------------------------------ | |
507 | // Function | |
508 | //------------------------------------------------------------------------ | |
509 | ||
b5cb0608 | 510 | #define funcMaxInputs 1 |
511 | #define funcMaxOutputs 8 | |
512 | ||
9c72faab | 513 | class Function { |
514 | public: | |
515 | ||
b5cb0608 | 516 | Function(); |
9c72faab | 517 | |
b5cb0608 | 518 | virtual ~Function(); |
9c72faab | 519 | |
b5cb0608 | 520 | // Construct a function. Returns NULL if unsuccessful. |
521 | static Function *parse(Object *funcObj); | |
522 | ||
523 | // Initialize the entries common to all function types. | |
524 | GBool init(Dict *dict); | |
525 | ||
526 | virtual Function *copy() = 0; | |
9c72faab | 527 | |
528 | // Return size of input and output tuples. | |
529 | int getInputSize() { return m; } | |
530 | int getOutputSize() { return n; } | |
531 | ||
532 | // Transform an input tuple into an output tuple. | |
b5cb0608 | 533 | virtual void transform(double *in, double *out) = 0; |
9c72faab | 534 | |
b5cb0608 | 535 | virtual GBool isOk() = 0; |
9c72faab | 536 | |
b5cb0608 | 537 | protected: |
9c72faab | 538 | |
52118ca3 | 539 | int m, n; // size of input and output tuples |
b5cb0608 | 540 | double // min and max values for function domain |
541 | domain[funcMaxInputs][2]; | |
542 | double // min and max values for function range | |
543 | range[funcMaxOutputs][2]; | |
544 | GBool hasRange; // set if range is defined | |
545 | }; | |
546 | ||
547 | //------------------------------------------------------------------------ | |
548 | // SampledFunction | |
549 | //------------------------------------------------------------------------ | |
550 | ||
551 | class SampledFunction: public Function { | |
552 | public: | |
553 | ||
554 | SampledFunction(Object *funcObj, Dict *dict); | |
555 | virtual ~SampledFunction(); | |
556 | virtual Function *copy() { return new SampledFunction(this); } | |
557 | virtual void transform(double *in, double *out); | |
558 | virtual GBool isOk() { return ok; } | |
559 | ||
560 | private: | |
561 | ||
562 | SampledFunction(SampledFunction *func); | |
563 | ||
564 | int // number of samples for each domain element | |
565 | sampleSize[funcMaxInputs]; | |
566 | double // min and max values for domain encoder | |
567 | encode[funcMaxInputs][2]; | |
568 | double // min and max values for range decoder | |
569 | decode[funcMaxOutputs][2]; | |
52118ca3 | 570 | double *samples; // the samples |
9c72faab | 571 | GBool ok; |
572 | }; | |
573 | ||
b5cb0608 | 574 | //------------------------------------------------------------------------ |
575 | // ExponentialFunction | |
576 | //------------------------------------------------------------------------ | |
577 | ||
578 | class ExponentialFunction: public Function { | |
579 | public: | |
580 | ||
581 | ExponentialFunction(Object *funcObj, Dict *dict); | |
582 | virtual ~ExponentialFunction(); | |
583 | virtual Function *copy() { return new ExponentialFunction(this); } | |
584 | virtual void transform(double *in, double *out); | |
585 | virtual GBool isOk() { return ok; } | |
586 | ||
587 | private: | |
588 | ||
589 | ExponentialFunction(ExponentialFunction *func); | |
590 | ||
591 | double c0[funcMaxOutputs]; | |
592 | double c1[funcMaxOutputs]; | |
593 | double e; | |
594 | GBool ok; | |
595 | }; | |
596 | ||
9c72faab | 597 | //------------------------------------------------------------------------ |
598 | // GfxImageColorMap | |
599 | //------------------------------------------------------------------------ | |
600 | ||
601 | class GfxImageColorMap { | |
602 | public: | |
603 | ||
604 | // Constructor. | |
b5cb0608 | 605 | GfxImageColorMap(int bits, Object *decode, GfxColorSpace *colorSpace); |
9c72faab | 606 | |
607 | // Destructor. | |
608 | ~GfxImageColorMap(); | |
609 | ||
610 | // Is color map valid? | |
611 | GBool isOk() { return ok; } | |
612 | ||
613 | // Get the color space. | |
614 | GfxColorSpace *getColorSpace() { return colorSpace; } | |
615 | ||
616 | // Get stream decoding info. | |
b5cb0608 | 617 | int getNumPixelComps() { return nComps; } |
9c72faab | 618 | int getBits() { return bits; } |
619 | ||
620 | // Get decode table. | |
621 | double getDecodeLow(int i) { return decodeLow[i]; } | |
622 | double getDecodeHigh(int i) { return decodeLow[i] + decodeRange[i]; } | |
623 | ||
b5cb0608 | 624 | // Convert an image pixel to a color. |
625 | void getGray(Guchar *x, double *gray); | |
626 | void getRGB(Guchar *x, GfxRGB *rgb); | |
627 | void getCMYK(Guchar *x, GfxCMYK *cmyk); | |
9c72faab | 628 | |
629 | private: | |
630 | ||
b5cb0608 | 631 | GfxColorSpace *colorSpace; // the image color space |
9c72faab | 632 | int bits; // bits per component |
b5cb0608 | 633 | int nComps; // number of components in a pixel |
634 | GfxColorSpace *colorSpace2; // secondary color space | |
635 | int nComps2; // number of components in colorSpace2 | |
636 | double *lookup; // lookup table | |
637 | double // minimum values for each component | |
638 | decodeLow[gfxColorMaxComps]; | |
639 | double // max - min value for each component | |
640 | decodeRange[gfxColorMaxComps]; | |
9c72faab | 641 | GBool ok; |
642 | }; | |
643 | ||
644 | //------------------------------------------------------------------------ | |
645 | // GfxSubpath and GfxPath | |
646 | //------------------------------------------------------------------------ | |
647 | ||
648 | class GfxSubpath { | |
649 | public: | |
650 | ||
651 | // Constructor. | |
652 | GfxSubpath(double x1, double y1); | |
653 | ||
654 | // Destructor. | |
655 | ~GfxSubpath(); | |
656 | ||
657 | // Copy. | |
658 | GfxSubpath *copy() { return new GfxSubpath(this); } | |
659 | ||
660 | // Get points. | |
661 | int getNumPoints() { return n; } | |
662 | double getX(int i) { return x[i]; } | |
663 | double getY(int i) { return y[i]; } | |
664 | GBool getCurve(int i) { return curve[i]; } | |
665 | ||
666 | // Get last point. | |
667 | double getLastX() { return x[n-1]; } | |
668 | double getLastY() { return y[n-1]; } | |
669 | ||
670 | // Add a line segment. | |
671 | void lineTo(double x1, double y1); | |
672 | ||
673 | // Add a Bezier curve. | |
674 | void curveTo(double x1, double y1, double x2, double y2, | |
675 | double x3, double y3); | |
676 | ||
677 | // Close the subpath. | |
52118ca3 | 678 | void close(); |
679 | GBool isClosed() { return closed; } | |
9c72faab | 680 | |
681 | private: | |
682 | ||
683 | double *x, *y; // points | |
684 | GBool *curve; // curve[i] => point i is a control point | |
685 | // for a Bezier curve | |
686 | int n; // number of points | |
687 | int size; // size of x/y arrays | |
52118ca3 | 688 | GBool closed; // set if path is closed |
9c72faab | 689 | |
690 | GfxSubpath(GfxSubpath *subpath); | |
691 | }; | |
692 | ||
693 | class GfxPath { | |
694 | public: | |
695 | ||
696 | // Constructor. | |
697 | GfxPath(); | |
698 | ||
699 | // Destructor. | |
700 | ~GfxPath(); | |
701 | ||
702 | // Copy. | |
703 | GfxPath *copy() | |
704 | { return new GfxPath(justMoved, firstX, firstY, subpaths, n, size); } | |
705 | ||
706 | // Is there a current point? | |
707 | GBool isCurPt() { return n > 0 || justMoved; } | |
708 | ||
709 | // Is the path non-empty, i.e., is there at least one segment? | |
710 | GBool isPath() { return n > 0; } | |
711 | ||
712 | // Get subpaths. | |
713 | int getNumSubpaths() { return n; } | |
714 | GfxSubpath *getSubpath(int i) { return subpaths[i]; } | |
715 | ||
716 | // Get last point on last subpath. | |
717 | double getLastX() { return subpaths[n-1]->getLastX(); } | |
718 | double getLastY() { return subpaths[n-1]->getLastY(); } | |
719 | ||
720 | // Move the current point. | |
721 | void moveTo(double x, double y); | |
722 | ||
723 | // Add a segment to the last subpath. | |
724 | void lineTo(double x, double y); | |
725 | ||
726 | // Add a Bezier curve to the last subpath | |
727 | void curveTo(double x1, double y1, double x2, double y2, | |
728 | double x3, double y3); | |
729 | ||
730 | // Close the last subpath. | |
731 | void close() { subpaths[n-1]->close(); } | |
732 | ||
733 | private: | |
734 | ||
735 | GBool justMoved; // set if a new subpath was just started | |
736 | double firstX, firstY; // first point in new subpath | |
737 | GfxSubpath **subpaths; // subpaths | |
738 | int n; // number of subpaths | |
739 | int size; // size of subpaths array | |
740 | ||
741 | GfxPath(GBool justMoved1, double firstX1, double firstY1, | |
742 | GfxSubpath **subpaths1, int n1, int size1); | |
743 | }; | |
744 | ||
745 | //------------------------------------------------------------------------ | |
746 | // GfxState | |
747 | //------------------------------------------------------------------------ | |
748 | ||
749 | class GfxState { | |
750 | public: | |
751 | ||
752 | // Construct a default GfxState, for a device with resolution <dpi>, | |
753 | // page box (<x1>,<y1>)-(<x2>,<y2>), page rotation <rotate>, and | |
754 | // coordinate system specified by <upsideDown>. | |
b5cb0608 | 755 | GfxState(double dpi, double px1a, double py1a, |
756 | double px2a, double py2a, int rotate, GBool upsideDown); | |
9c72faab | 757 | |
758 | // Destructor. | |
759 | ~GfxState(); | |
760 | ||
761 | // Copy. | |
762 | GfxState *copy() { return new GfxState(this); } | |
763 | ||
764 | // Accessors. | |
765 | double *getCTM() { return ctm; } | |
766 | double getX1() { return px1; } | |
767 | double getY1() { return py1; } | |
768 | double getX2() { return px2; } | |
769 | double getY2() { return py2; } | |
770 | double getPageWidth() { return pageWidth; } | |
771 | double getPageHeight() { return pageHeight; } | |
772 | GfxColor *getFillColor() { return &fillColor; } | |
773 | GfxColor *getStrokeColor() { return &strokeColor; } | |
b5cb0608 | 774 | void getFillRGB(GfxRGB *rgb) |
775 | { fillColorSpace->getRGB(&fillColor, rgb); } | |
776 | void getStrokeRGB(GfxRGB *rgb) | |
777 | { strokeColorSpace->getRGB(&strokeColor, rgb); } | |
778 | void getFillCMYK(GfxCMYK *cmyk) | |
779 | { fillColorSpace->getCMYK(&fillColor, cmyk); } | |
780 | void getStrokeCMYK(GfxCMYK *cmyk) | |
781 | { strokeColorSpace->getCMYK(&strokeColor, cmyk); } | |
782 | GfxColorSpace *getFillColorSpace() { return fillColorSpace; } | |
783 | GfxColorSpace *getStrokeColorSpace() { return strokeColorSpace; } | |
784 | GfxPattern *getFillPattern() { return fillPattern; } | |
785 | GfxPattern *getStrokePattern() { return strokePattern; } | |
786 | double getFillOpacity() { return fillOpacity; } | |
787 | double getStrokeOpacity() { return strokeOpacity; } | |
9c72faab | 788 | double getLineWidth() { return lineWidth; } |
789 | void getLineDash(double **dash, int *length, double *start) | |
790 | { *dash = lineDash; *length = lineDashLength; *start = lineDashStart; } | |
791 | int getFlatness() { return flatness; } | |
792 | int getLineJoin() { return lineJoin; } | |
793 | int getLineCap() { return lineCap; } | |
794 | double getMiterLimit() { return miterLimit; } | |
795 | GfxFont *getFont() { return font; } | |
796 | double getFontSize() { return fontSize; } | |
797 | double *getTextMat() { return textMat; } | |
798 | double getCharSpace() { return charSpace; } | |
799 | double getWordSpace() { return wordSpace; } | |
800 | double getHorizScaling() { return horizScaling; } | |
801 | double getLeading() { return leading; } | |
802 | double getRise() { return rise; } | |
803 | int getRender() { return render; } | |
804 | GfxPath *getPath() { return path; } | |
805 | double getCurX() { return curX; } | |
806 | double getCurY() { return curY; } | |
807 | double getLineX() { return lineX; } | |
808 | double getLineY() { return lineY; } | |
809 | ||
810 | // Is there a current point/path? | |
811 | GBool isCurPt() { return path->isCurPt(); } | |
812 | GBool isPath() { return path->isPath(); } | |
813 | ||
814 | // Transforms. | |
815 | void transform(double x1, double y1, double *x2, double *y2) | |
816 | { *x2 = ctm[0] * x1 + ctm[2] * y1 + ctm[4]; | |
817 | *y2 = ctm[1] * x1 + ctm[3] * y1 + ctm[5]; } | |
818 | void transformDelta(double x1, double y1, double *x2, double *y2) | |
819 | { *x2 = ctm[0] * x1 + ctm[2] * y1; | |
820 | *y2 = ctm[1] * x1 + ctm[3] * y1; } | |
821 | void textTransform(double x1, double y1, double *x2, double *y2) | |
822 | { *x2 = textMat[0] * x1 + textMat[2] * y1 + textMat[4]; | |
823 | *y2 = textMat[1] * x1 + textMat[3] * y1 + textMat[5]; } | |
824 | void textTransformDelta(double x1, double y1, double *x2, double *y2) | |
825 | { *x2 = textMat[0] * x1 + textMat[2] * y1; | |
826 | *y2 = textMat[1] * x1 + textMat[3] * y1; } | |
827 | double transformWidth(double w); | |
828 | double getTransformedLineWidth() | |
829 | { return transformWidth(lineWidth); } | |
830 | double getTransformedFontSize(); | |
831 | void getFontTransMat(double *m11, double *m12, double *m21, double *m22); | |
832 | ||
833 | // Change state parameters. | |
52118ca3 | 834 | void setCTM(double a, double b, double c, |
835 | double d, double e, double f); | |
9c72faab | 836 | void concatCTM(double a, double b, double c, |
837 | double d, double e, double f); | |
9c72faab | 838 | void setFillColorSpace(GfxColorSpace *colorSpace); |
839 | void setStrokeColorSpace(GfxColorSpace *colorSpace); | |
b5cb0608 | 840 | void setFillColor(GfxColor *color) { fillColor = *color; } |
841 | void setStrokeColor(GfxColor *color) { strokeColor = *color; } | |
842 | void setFillPattern(GfxPattern *pattern); | |
843 | void setStrokePattern(GfxPattern *pattern); | |
844 | void setFillOpacity(double opac) { fillOpacity = opac; } | |
845 | void setStrokeOpacity(double opac) { strokeOpacity = opac; } | |
846 | void setLineWidth(double width) { lineWidth = width; } | |
9c72faab | 847 | void setLineDash(double *dash, int length, double start); |
848 | void setFlatness(int flatness1) { flatness = flatness1; } | |
849 | void setLineJoin(int lineJoin1) { lineJoin = lineJoin1; } | |
850 | void setLineCap(int lineCap1) { lineCap = lineCap1; } | |
851 | void setMiterLimit(double miterLimit1) { miterLimit = miterLimit1; } | |
852 | void setFont(GfxFont *font1, double fontSize1) | |
853 | { font = font1; fontSize = fontSize1; } | |
854 | void setTextMat(double a, double b, double c, | |
855 | double d, double e, double f) | |
856 | { textMat[0] = a; textMat[1] = b; textMat[2] = c; | |
857 | textMat[3] = d; textMat[4] = e; textMat[5] = f; } | |
858 | void setCharSpace(double space) | |
859 | { charSpace = space; } | |
860 | void setWordSpace(double space) | |
861 | { wordSpace = space; } | |
862 | void setHorizScaling(double scale) | |
863 | { horizScaling = 0.01 * scale; } | |
864 | void setLeading(double leading1) | |
865 | { leading = leading1; } | |
866 | void setRise(double rise1) | |
867 | { rise = rise1; } | |
868 | void setRender(int render1) | |
869 | { render = render1; } | |
870 | ||
871 | // Add to path. | |
872 | void moveTo(double x, double y) | |
873 | { path->moveTo(curX = x, curY = y); } | |
874 | void lineTo(double x, double y) | |
875 | { path->lineTo(curX = x, curY = y); } | |
876 | void curveTo(double x1, double y1, double x2, double y2, | |
877 | double x3, double y3) | |
878 | { path->curveTo(x1, y1, x2, y2, curX = x3, curY = y3); } | |
879 | void closePath() | |
880 | { path->close(); curX = path->getLastX(); curY = path->getLastY(); } | |
881 | void clearPath(); | |
882 | ||
883 | // Text position. | |
884 | void textMoveTo(double tx, double ty) | |
885 | { lineX = tx; lineY = ty; textTransform(tx, ty, &curX, &curY); } | |
886 | void textShift(double tx); | |
887 | void textShift(double tx, double ty); | |
888 | ||
889 | // Push/pop GfxState on/off stack. | |
890 | GfxState *save(); | |
891 | GfxState *restore(); | |
892 | GBool hasSaves() { return saved != NULL; } | |
893 | ||
894 | private: | |
895 | ||
896 | double ctm[6]; // coord transform matrix | |
897 | double px1, py1, px2, py2; // page corners (user coords) | |
898 | double pageWidth, pageHeight; // page size (pixels) | |
899 | ||
900 | GfxColorSpace *fillColorSpace; // fill color space | |
901 | GfxColorSpace *strokeColorSpace; // stroke color space | |
902 | GfxColor fillColor; // fill color | |
903 | GfxColor strokeColor; // stroke color | |
b5cb0608 | 904 | GfxPattern *fillPattern; // fill pattern |
905 | GfxPattern *strokePattern; // stroke pattern | |
906 | double fillOpacity; // fill opacity | |
907 | double strokeOpacity; // stroke opacity | |
9c72faab | 908 | |
909 | double lineWidth; // line width | |
910 | double *lineDash; // line dash | |
911 | int lineDashLength; | |
912 | double lineDashStart; | |
913 | int flatness; // curve flatness | |
914 | int lineJoin; // line join style | |
915 | int lineCap; // line cap style | |
916 | double miterLimit; // line miter limit | |
917 | ||
918 | GfxFont *font; // font | |
919 | double fontSize; // font size | |
920 | double textMat[6]; // text matrix | |
921 | double charSpace; // character spacing | |
922 | double wordSpace; // word spacing | |
923 | double horizScaling; // horizontal scaling | |
924 | double leading; // text leading | |
925 | double rise; // text rise | |
926 | int render; // text rendering mode | |
927 | ||
928 | GfxPath *path; // array of path elements | |
929 | double curX, curY; // current point (user coords) | |
930 | double lineX, lineY; // start of current text line (text coords) | |
931 | ||
932 | GfxState *saved; // next GfxState on stack | |
933 | ||
934 | GfxState(GfxState *state); | |
935 | }; | |
936 | ||
937 | #endif |