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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" |
753453e4 | 18 | #include "Function.h" |
9c72faab | 19 | |
b5cb0608 | 20 | class Array; |
9c72faab | 21 | class GfxFont; |
753453e4 | 22 | struct PDFRectangle; |
9c72faab | 23 | |
52118ca3 | 24 | //------------------------------------------------------------------------ |
b5cb0608 | 25 | // GfxColor |
52118ca3 | 26 | //------------------------------------------------------------------------ |
27 | ||
753453e4 | 28 | #define gfxColorMaxComps funcMaxOutputs |
b5cb0608 | 29 | |
30 | struct GfxColor { | |
31 | double c[gfxColorMaxComps]; | |
52118ca3 | 32 | }; |
33 | ||
9c72faab | 34 | //------------------------------------------------------------------------ |
b5cb0608 | 35 | // GfxRGB |
36 | //------------------------------------------------------------------------ | |
37 | ||
38 | struct GfxRGB { | |
39 | double r, g, b; | |
40 | }; | |
41 | ||
42 | //------------------------------------------------------------------------ | |
43 | // GfxCMYK | |
44 | //------------------------------------------------------------------------ | |
45 | ||
46 | struct GfxCMYK { | |
47 | double c, m, y, k; | |
48 | }; | |
49 | ||
9c72faab | 50 | //------------------------------------------------------------------------ |
b5cb0608 | 51 | // GfxColorSpace |
52 | //------------------------------------------------------------------------ | |
53 | ||
54 | enum GfxColorSpaceMode { | |
55 | csDeviceGray, | |
56 | csCalGray, | |
57 | csDeviceRGB, | |
58 | csCalRGB, | |
59 | csDeviceCMYK, | |
60 | csLab, | |
61 | csICCBased, | |
62 | csIndexed, | |
63 | csSeparation, | |
64 | csDeviceN, | |
65 | csPattern | |
66 | }; | |
9c72faab | 67 | |
b5cb0608 | 68 | class GfxColorSpace { |
9c72faab | 69 | public: |
70 | ||
b5cb0608 | 71 | GfxColorSpace(); |
72 | virtual ~GfxColorSpace(); | |
73 | virtual GfxColorSpace *copy() = 0; | |
74 | virtual GfxColorSpaceMode getMode() = 0; | |
9c72faab | 75 | |
b5cb0608 | 76 | // Construct a color space. Returns NULL if unsuccessful. |
77 | static GfxColorSpace *parse(Object *csObj); | |
9c72faab | 78 | |
b5cb0608 | 79 | // Convert to gray, RGB, or CMYK. |
80 | virtual void getGray(GfxColor *color, double *gray) = 0; | |
81 | virtual void getRGB(GfxColor *color, GfxRGB *rgb) = 0; | |
82 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk) = 0; | |
83 | ||
84 | // Return the number of color components. | |
85 | virtual int getNComps() = 0; | |
86 | ||
87 | // Return the default ranges for each component, assuming an image | |
88 | // with a max pixel value of <maxImgPixel>. | |
89 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
90 | int maxImgPixel); | |
9c72faab | 91 | |
92 | private: | |
b5cb0608 | 93 | }; |
9c72faab | 94 | |
b5cb0608 | 95 | //------------------------------------------------------------------------ |
96 | // GfxDeviceGrayColorSpace | |
97 | //------------------------------------------------------------------------ | |
98 | ||
99 | class GfxDeviceGrayColorSpace: public GfxColorSpace { | |
100 | public: | |
101 | ||
102 | GfxDeviceGrayColorSpace(); | |
103 | virtual ~GfxDeviceGrayColorSpace(); | |
104 | virtual GfxColorSpace *copy(); | |
105 | virtual GfxColorSpaceMode getMode() { return csDeviceGray; } | |
106 | ||
107 | virtual void getGray(GfxColor *color, double *gray); | |
108 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
109 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
110 | ||
111 | virtual int getNComps() { return 1; } | |
112 | ||
113 | private: | |
9c72faab | 114 | }; |
115 | ||
116 | //------------------------------------------------------------------------ | |
b5cb0608 | 117 | // GfxCalGrayColorSpace |
9c72faab | 118 | //------------------------------------------------------------------------ |
119 | ||
b5cb0608 | 120 | class GfxCalGrayColorSpace: public GfxColorSpace { |
121 | public: | |
122 | ||
123 | GfxCalGrayColorSpace(); | |
124 | virtual ~GfxCalGrayColorSpace(); | |
125 | virtual GfxColorSpace *copy(); | |
126 | virtual GfxColorSpaceMode getMode() { return csCalGray; } | |
127 | ||
128 | // Construct a CalGray color space. Returns NULL if unsuccessful. | |
129 | static GfxColorSpace *parse(Array *arr); | |
130 | ||
131 | virtual void getGray(GfxColor *color, double *gray); | |
132 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
133 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
134 | ||
135 | virtual int getNComps() { return 1; } | |
136 | ||
137 | // CalGray-specific access. | |
138 | double getWhiteX() { return whiteX; } | |
139 | double getWhiteY() { return whiteY; } | |
140 | double getWhiteZ() { return whiteZ; } | |
141 | double getBlackX() { return blackX; } | |
142 | double getBlackY() { return blackY; } | |
143 | double getBlackZ() { return blackZ; } | |
144 | double getGamma() { return gamma; } | |
145 | ||
146 | private: | |
147 | ||
148 | double whiteX, whiteY, whiteZ; // white point | |
149 | double blackX, blackY, blackZ; // black point | |
150 | double gamma; // gamma value | |
9c72faab | 151 | }; |
152 | ||
b5cb0608 | 153 | //------------------------------------------------------------------------ |
154 | // GfxDeviceRGBColorSpace | |
155 | //------------------------------------------------------------------------ | |
156 | ||
157 | class GfxDeviceRGBColorSpace: public GfxColorSpace { | |
9c72faab | 158 | public: |
159 | ||
b5cb0608 | 160 | GfxDeviceRGBColorSpace(); |
161 | virtual ~GfxDeviceRGBColorSpace(); | |
162 | virtual GfxColorSpace *copy(); | |
163 | virtual GfxColorSpaceMode getMode() { return csDeviceRGB; } | |
9c72faab | 164 | |
b5cb0608 | 165 | virtual void getGray(GfxColor *color, double *gray); |
166 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
167 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
9c72faab | 168 | |
b5cb0608 | 169 | virtual int getNComps() { return 3; } |
9c72faab | 170 | |
b5cb0608 | 171 | private: |
172 | }; | |
9c72faab | 173 | |
b5cb0608 | 174 | //------------------------------------------------------------------------ |
175 | // GfxCalRGBColorSpace | |
176 | //------------------------------------------------------------------------ | |
177 | ||
178 | class GfxCalRGBColorSpace: public GfxColorSpace { | |
179 | public: | |
180 | ||
181 | GfxCalRGBColorSpace(); | |
182 | virtual ~GfxCalRGBColorSpace(); | |
183 | virtual GfxColorSpace *copy(); | |
184 | virtual GfxColorSpaceMode getMode() { return csCalRGB; } | |
185 | ||
186 | // Construct a CalRGB color space. Returns NULL if unsuccessful. | |
187 | static GfxColorSpace *parse(Array *arr); | |
188 | ||
189 | virtual void getGray(GfxColor *color, double *gray); | |
190 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
191 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
192 | ||
193 | virtual int getNComps() { return 3; } | |
194 | ||
195 | // CalRGB-specific access. | |
196 | double getWhiteX() { return whiteX; } | |
197 | double getWhiteY() { return whiteY; } | |
198 | double getWhiteZ() { return whiteZ; } | |
199 | double getBlackX() { return blackX; } | |
200 | double getBlackY() { return blackY; } | |
201 | double getBlackZ() { return blackZ; } | |
202 | double getGammaR() { return gammaR; } | |
203 | double getGammaG() { return gammaG; } | |
204 | double getGammaB() { return gammaB; } | |
753453e4 | 205 | double *getMatrix() { return mat; } |
b5cb0608 | 206 | |
207 | private: | |
208 | ||
209 | double whiteX, whiteY, whiteZ; // white point | |
210 | double blackX, blackY, blackZ; // black point | |
211 | double gammaR, gammaG, gammaB; // gamma values | |
753453e4 | 212 | double mat[9]; // ABC -> XYZ transform matrix |
b5cb0608 | 213 | }; |
214 | ||
215 | //------------------------------------------------------------------------ | |
216 | // GfxDeviceCMYKColorSpace | |
217 | //------------------------------------------------------------------------ | |
218 | ||
219 | class GfxDeviceCMYKColorSpace: public GfxColorSpace { | |
220 | public: | |
9c72faab | 221 | |
b5cb0608 | 222 | GfxDeviceCMYKColorSpace(); |
223 | virtual ~GfxDeviceCMYKColorSpace(); | |
224 | virtual GfxColorSpace *copy(); | |
225 | virtual GfxColorSpaceMode getMode() { return csDeviceCMYK; } | |
9c72faab | 226 | |
b5cb0608 | 227 | virtual void getGray(GfxColor *color, double *gray); |
228 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
229 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
230 | ||
231 | virtual int getNComps() { return 4; } | |
232 | ||
233 | private: | |
234 | }; | |
235 | ||
236 | //------------------------------------------------------------------------ | |
237 | // GfxLabColorSpace | |
238 | //------------------------------------------------------------------------ | |
239 | ||
240 | class GfxLabColorSpace: public GfxColorSpace { | |
241 | public: | |
9c72faab | 242 | |
b5cb0608 | 243 | GfxLabColorSpace(); |
244 | virtual ~GfxLabColorSpace(); | |
245 | virtual GfxColorSpace *copy(); | |
246 | virtual GfxColorSpaceMode getMode() { return csLab; } | |
9c72faab | 247 | |
b5cb0608 | 248 | // Construct a Lab color space. Returns NULL if unsuccessful. |
249 | static GfxColorSpace *parse(Array *arr); | |
9c72faab | 250 | |
b5cb0608 | 251 | virtual void getGray(GfxColor *color, double *gray); |
252 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
253 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
52118ca3 | 254 | |
b5cb0608 | 255 | virtual int getNComps() { return 3; } |
52118ca3 | 256 | |
b5cb0608 | 257 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, |
258 | int maxImgPixel); | |
259 | ||
260 | // Lab-specific access. | |
261 | double getWhiteX() { return whiteX; } | |
262 | double getWhiteY() { return whiteY; } | |
263 | double getWhiteZ() { return whiteZ; } | |
264 | double getBlackX() { return blackX; } | |
265 | double getBlackY() { return blackY; } | |
266 | double getBlackZ() { return blackZ; } | |
267 | double getAMin() { return aMin; } | |
268 | double getAMax() { return aMax; } | |
269 | double getBMin() { return bMin; } | |
270 | double getBMax() { return bMax; } | |
271 | ||
272 | private: | |
273 | ||
274 | double whiteX, whiteY, whiteZ; // white point | |
275 | double blackX, blackY, blackZ; // black point | |
276 | double aMin, aMax, bMin, bMax; // range for the a and b components | |
277 | double kr, kg, kb; // gamut mapping mulitpliers | |
278 | }; | |
279 | ||
280 | //------------------------------------------------------------------------ | |
281 | // GfxICCBasedColorSpace | |
282 | //------------------------------------------------------------------------ | |
283 | ||
284 | class GfxICCBasedColorSpace: public GfxColorSpace { | |
285 | public: | |
286 | ||
753453e4 | 287 | GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA, |
288 | Ref *iccProfileStreamA); | |
b5cb0608 | 289 | virtual ~GfxICCBasedColorSpace(); |
290 | virtual GfxColorSpace *copy(); | |
291 | virtual GfxColorSpaceMode getMode() { return csICCBased; } | |
292 | ||
293 | // Construct an ICCBased color space. Returns NULL if unsuccessful. | |
294 | static GfxColorSpace *parse(Array *arr); | |
295 | ||
296 | virtual void getGray(GfxColor *color, double *gray); | |
297 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
298 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
299 | ||
300 | virtual int getNComps() { return nComps; } | |
301 | ||
302 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
303 | int maxImgPixel); | |
304 | ||
305 | // ICCBased-specific access. | |
306 | GfxColorSpace *getAlt() { return alt; } | |
307 | ||
308 | private: | |
309 | ||
310 | int nComps; // number of color components (1, 3, or 4) | |
311 | GfxColorSpace *alt; // alternate color space | |
312 | double rangeMin[4]; // min values for each component | |
313 | double rangeMax[4]; // max values for each component | |
314 | Ref iccProfileStream; // the ICC profile | |
315 | }; | |
316 | ||
317 | //------------------------------------------------------------------------ | |
318 | // GfxIndexedColorSpace | |
319 | //------------------------------------------------------------------------ | |
320 | ||
321 | class GfxIndexedColorSpace: public GfxColorSpace { | |
322 | public: | |
323 | ||
753453e4 | 324 | GfxIndexedColorSpace(GfxColorSpace *baseA, int indexHighA); |
b5cb0608 | 325 | virtual ~GfxIndexedColorSpace(); |
326 | virtual GfxColorSpace *copy(); | |
327 | virtual GfxColorSpaceMode getMode() { return csIndexed; } | |
328 | ||
329 | // Construct a Lab color space. Returns NULL if unsuccessful. | |
330 | static GfxColorSpace *parse(Array *arr); | |
331 | ||
332 | virtual void getGray(GfxColor *color, double *gray); | |
333 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
334 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
335 | ||
336 | virtual int getNComps() { return 1; } | |
337 | ||
338 | virtual void getDefaultRanges(double *decodeLow, double *decodeRange, | |
339 | int maxImgPixel); | |
340 | ||
341 | // Indexed-specific access. | |
342 | GfxColorSpace *getBase() { return base; } | |
9c72faab | 343 | int getIndexHigh() { return indexHigh; } |
b5cb0608 | 344 | Guchar *getLookup() { return lookup; } |
345 | ||
346 | private: | |
347 | ||
348 | GfxColorSpace *base; // base color space | |
349 | int indexHigh; // max pixel value | |
350 | Guchar *lookup; // lookup table | |
351 | }; | |
352 | ||
353 | //------------------------------------------------------------------------ | |
354 | // GfxSeparationColorSpace | |
355 | //------------------------------------------------------------------------ | |
356 | ||
357 | class GfxSeparationColorSpace: public GfxColorSpace { | |
358 | public: | |
359 | ||
753453e4 | 360 | GfxSeparationColorSpace(GString *nameA, GfxColorSpace *altA, |
361 | Function *funcA); | |
b5cb0608 | 362 | virtual ~GfxSeparationColorSpace(); |
363 | virtual GfxColorSpace *copy(); | |
364 | virtual GfxColorSpaceMode getMode() { return csSeparation; } | |
365 | ||
366 | // Construct a Separation color space. Returns NULL if unsuccessful. | |
367 | static GfxColorSpace *parse(Array *arr); | |
368 | ||
369 | virtual void getGray(GfxColor *color, double *gray); | |
370 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
371 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
372 | ||
373 | virtual int getNComps() { return 1; } | |
374 | ||
375 | // Separation-specific access. | |
376 | GString *getName() { return name; } | |
377 | GfxColorSpace *getAlt() { return alt; } | |
378 | Function *getFunc() { return func; } | |
379 | ||
380 | private: | |
381 | ||
382 | GString *name; // colorant name | |
383 | GfxColorSpace *alt; // alternate color space | |
384 | Function *func; // tint transform (into alternate color space) | |
385 | }; | |
386 | ||
387 | //------------------------------------------------------------------------ | |
388 | // GfxDeviceNColorSpace | |
389 | //------------------------------------------------------------------------ | |
390 | ||
391 | class GfxDeviceNColorSpace: public GfxColorSpace { | |
392 | public: | |
393 | ||
394 | GfxDeviceNColorSpace(int nComps, GfxColorSpace *alt, Function *func); | |
395 | virtual ~GfxDeviceNColorSpace(); | |
396 | virtual GfxColorSpace *copy(); | |
397 | virtual GfxColorSpaceMode getMode() { return csDeviceN; } | |
398 | ||
399 | // Construct a DeviceN color space. Returns NULL if unsuccessful. | |
400 | static GfxColorSpace *parse(Array *arr); | |
401 | ||
402 | virtual void getGray(GfxColor *color, double *gray); | |
403 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
404 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
405 | ||
406 | virtual int getNComps() { return nComps; } | |
407 | ||
408 | // DeviceN-specific access. | |
409 | GfxColorSpace *getAlt() { return alt; } | |
410 | ||
411 | private: | |
412 | ||
413 | int nComps; // number of components | |
414 | GString // colorant names | |
415 | *names[gfxColorMaxComps]; | |
416 | GfxColorSpace *alt; // alternate color space | |
417 | Function *func; // tint transform (into alternate color space) | |
418 | ||
419 | }; | |
420 | ||
421 | //------------------------------------------------------------------------ | |
422 | // GfxPatternColorSpace | |
423 | //------------------------------------------------------------------------ | |
424 | ||
425 | class GfxPatternColorSpace: public GfxColorSpace { | |
426 | public: | |
427 | ||
753453e4 | 428 | GfxPatternColorSpace(GfxColorSpace *underA); |
b5cb0608 | 429 | virtual ~GfxPatternColorSpace(); |
430 | virtual GfxColorSpace *copy(); | |
431 | virtual GfxColorSpaceMode getMode() { return csPattern; } | |
432 | ||
433 | // Construct a Pattern color space. Returns NULL if unsuccessful. | |
434 | static GfxColorSpace *parse(Array *arr); | |
435 | ||
436 | virtual void getGray(GfxColor *color, double *gray); | |
437 | virtual void getRGB(GfxColor *color, GfxRGB *rgb); | |
438 | virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk); | |
439 | ||
440 | virtual int getNComps() { return 0; } | |
441 | ||
442 | // Pattern-specific access. | |
443 | GfxColorSpace *getUnder() { return under; } | |
444 | ||
445 | private: | |
9c72faab | 446 | |
b5cb0608 | 447 | GfxColorSpace *under; // underlying color space (for uncolored |
448 | // patterns) | |
449 | }; | |
450 | ||
451 | //------------------------------------------------------------------------ | |
452 | // GfxPattern | |
453 | //------------------------------------------------------------------------ | |
454 | ||
455 | class GfxPattern { | |
456 | public: | |
457 | ||
753453e4 | 458 | GfxPattern(int typeA); |
b5cb0608 | 459 | virtual ~GfxPattern(); |
460 | ||
461 | static GfxPattern *parse(Object *obj); | |
462 | ||
463 | virtual GfxPattern *copy() = 0; | |
464 | ||
465 | int getType() { return type; } | |
466 | ||
467 | private: | |
468 | ||
469 | int type; | |
470 | }; | |
471 | ||
472 | //------------------------------------------------------------------------ | |
473 | // GfxTilingPattern | |
474 | //------------------------------------------------------------------------ | |
475 | ||
476 | class GfxTilingPattern: public GfxPattern { | |
477 | public: | |
478 | ||
479 | GfxTilingPattern(Dict *streamDict, Object *stream); | |
480 | virtual ~GfxTilingPattern(); | |
9c72faab | 481 | |
b5cb0608 | 482 | virtual GfxPattern *copy(); |
483 | ||
484 | int getPaintType() { return paintType; } | |
485 | int getTilingType() { return tilingType; } | |
486 | double *getBBox() { return bbox; } | |
487 | double getXStep() { return xStep; } | |
488 | double getYStep() { return yStep; } | |
489 | Dict *getResDict() | |
490 | { return resDict.isDict() ? resDict.getDict() : (Dict *)NULL; } | |
491 | double *getMatrix() { return matrix; } | |
492 | Object *getContentStream() { return &contentStream; } | |
52118ca3 | 493 | |
9c72faab | 494 | private: |
495 | ||
b5cb0608 | 496 | GfxTilingPattern(GfxTilingPattern *pat); |
497 | ||
498 | int paintType; | |
499 | int tilingType; | |
500 | double bbox[4]; | |
501 | double xStep, yStep; | |
502 | Object resDict; | |
503 | double matrix[6]; | |
504 | Object contentStream; | |
9c72faab | 505 | }; |
506 | ||
507 | //------------------------------------------------------------------------ | |
753453e4 | 508 | // GfxShading |
9c72faab | 509 | //------------------------------------------------------------------------ |
510 | ||
753453e4 | 511 | class GfxShading { |
9c72faab | 512 | public: |
513 | ||
753453e4 | 514 | GfxShading(); |
515 | virtual ~GfxShading(); | |
9c72faab | 516 | |
753453e4 | 517 | static GfxShading *parse(Object *obj); |
9c72faab | 518 | |
753453e4 | 519 | int getType() { return type; } |
520 | GfxColorSpace *getColorSpace() { return colorSpace; } | |
521 | GfxColor *getBackground() { return &background; } | |
522 | GBool getHasBackground() { return hasBackground; } | |
523 | void getBBox(double *xMinA, double *yMinA, double *xMaxA, double *yMaxA) | |
524 | { *xMinA = xMin; *yMinA = yMin; *xMaxA = xMax; *yMaxA = yMax; } | |
525 | GBool getHasBBox() { return hasBBox; } | |
9c72faab | 526 | |
753453e4 | 527 | private: |
9c72faab | 528 | |
753453e4 | 529 | int type; |
530 | GfxColorSpace *colorSpace; | |
531 | GfxColor background; | |
532 | GBool hasBackground; | |
533 | double xMin, yMin, xMax, yMax; | |
534 | GBool hasBBox; | |
b5cb0608 | 535 | }; |
536 | ||
537 | //------------------------------------------------------------------------ | |
753453e4 | 538 | // GfxAxialShading |
b5cb0608 | 539 | //------------------------------------------------------------------------ |
540 | ||
753453e4 | 541 | class GfxAxialShading: public GfxShading { |
b5cb0608 | 542 | public: |
543 | ||
753453e4 | 544 | GfxAxialShading(double x0A, double y0A, |
545 | double x1A, double y1A, | |
546 | double t0A, double t1A, | |
547 | Function **funcsA, int nFuncsA, | |
548 | GBool extend0A, GBool extend1A); | |
549 | virtual ~GfxAxialShading(); | |
b5cb0608 | 550 | |
753453e4 | 551 | static GfxAxialShading *parse(Dict *dict); |
b5cb0608 | 552 | |
753453e4 | 553 | void getCoords(double *x0A, double *y0A, double *x1A, double *y1A) |
554 | { *x0A = x0; *y0A = y0; *x1A = x1; *y1A = y1; } | |
555 | double getDomain0() { return t0; } | |
556 | double getDomain1() { return t1; } | |
557 | void getColor(double t, GfxColor *color); | |
558 | GBool getExtend0() { return extend0; } | |
559 | GBool getExtend1() { return extend1; } | |
b5cb0608 | 560 | |
561 | private: | |
562 | ||
753453e4 | 563 | double x0, y0, x1, y1; |
564 | double t0, t1; | |
565 | Function *funcs[gfxColorMaxComps]; | |
566 | int nFuncs; | |
567 | GBool extend0, extend1; | |
b5cb0608 | 568 | }; |
569 | ||
9c72faab | 570 | //------------------------------------------------------------------------ |
571 | // GfxImageColorMap | |
572 | //------------------------------------------------------------------------ | |
573 | ||
574 | class GfxImageColorMap { | |
575 | public: | |
576 | ||
577 | // Constructor. | |
753453e4 | 578 | GfxImageColorMap(int bitsA, Object *decode, GfxColorSpace *colorSpaceA); |
9c72faab | 579 | |
580 | // Destructor. | |
581 | ~GfxImageColorMap(); | |
582 | ||
583 | // Is color map valid? | |
584 | GBool isOk() { return ok; } | |
585 | ||
586 | // Get the color space. | |
587 | GfxColorSpace *getColorSpace() { return colorSpace; } | |
588 | ||
589 | // Get stream decoding info. | |
b5cb0608 | 590 | int getNumPixelComps() { return nComps; } |
9c72faab | 591 | int getBits() { return bits; } |
592 | ||
593 | // Get decode table. | |
594 | double getDecodeLow(int i) { return decodeLow[i]; } | |
595 | double getDecodeHigh(int i) { return decodeLow[i] + decodeRange[i]; } | |
596 | ||
b5cb0608 | 597 | // Convert an image pixel to a color. |
598 | void getGray(Guchar *x, double *gray); | |
599 | void getRGB(Guchar *x, GfxRGB *rgb); | |
600 | void getCMYK(Guchar *x, GfxCMYK *cmyk); | |
9c72faab | 601 | |
602 | private: | |
603 | ||
b5cb0608 | 604 | GfxColorSpace *colorSpace; // the image color space |
9c72faab | 605 | int bits; // bits per component |
b5cb0608 | 606 | int nComps; // number of components in a pixel |
607 | GfxColorSpace *colorSpace2; // secondary color space | |
608 | int nComps2; // number of components in colorSpace2 | |
609 | double *lookup; // lookup table | |
610 | double // minimum values for each component | |
611 | decodeLow[gfxColorMaxComps]; | |
612 | double // max - min value for each component | |
613 | decodeRange[gfxColorMaxComps]; | |
9c72faab | 614 | GBool ok; |
615 | }; | |
616 | ||
617 | //------------------------------------------------------------------------ | |
618 | // GfxSubpath and GfxPath | |
619 | //------------------------------------------------------------------------ | |
620 | ||
621 | class GfxSubpath { | |
622 | public: | |
623 | ||
624 | // Constructor. | |
625 | GfxSubpath(double x1, double y1); | |
626 | ||
627 | // Destructor. | |
628 | ~GfxSubpath(); | |
629 | ||
630 | // Copy. | |
631 | GfxSubpath *copy() { return new GfxSubpath(this); } | |
632 | ||
633 | // Get points. | |
634 | int getNumPoints() { return n; } | |
635 | double getX(int i) { return x[i]; } | |
636 | double getY(int i) { return y[i]; } | |
637 | GBool getCurve(int i) { return curve[i]; } | |
638 | ||
639 | // Get last point. | |
640 | double getLastX() { return x[n-1]; } | |
641 | double getLastY() { return y[n-1]; } | |
642 | ||
643 | // Add a line segment. | |
644 | void lineTo(double x1, double y1); | |
645 | ||
646 | // Add a Bezier curve. | |
647 | void curveTo(double x1, double y1, double x2, double y2, | |
648 | double x3, double y3); | |
649 | ||
650 | // Close the subpath. | |
52118ca3 | 651 | void close(); |
652 | GBool isClosed() { return closed; } | |
9c72faab | 653 | |
654 | private: | |
655 | ||
656 | double *x, *y; // points | |
657 | GBool *curve; // curve[i] => point i is a control point | |
658 | // for a Bezier curve | |
659 | int n; // number of points | |
660 | int size; // size of x/y arrays | |
52118ca3 | 661 | GBool closed; // set if path is closed |
9c72faab | 662 | |
663 | GfxSubpath(GfxSubpath *subpath); | |
664 | }; | |
665 | ||
666 | class GfxPath { | |
667 | public: | |
668 | ||
669 | // Constructor. | |
670 | GfxPath(); | |
671 | ||
672 | // Destructor. | |
673 | ~GfxPath(); | |
674 | ||
675 | // Copy. | |
676 | GfxPath *copy() | |
677 | { return new GfxPath(justMoved, firstX, firstY, subpaths, n, size); } | |
678 | ||
679 | // Is there a current point? | |
680 | GBool isCurPt() { return n > 0 || justMoved; } | |
681 | ||
682 | // Is the path non-empty, i.e., is there at least one segment? | |
683 | GBool isPath() { return n > 0; } | |
684 | ||
685 | // Get subpaths. | |
686 | int getNumSubpaths() { return n; } | |
687 | GfxSubpath *getSubpath(int i) { return subpaths[i]; } | |
688 | ||
689 | // Get last point on last subpath. | |
690 | double getLastX() { return subpaths[n-1]->getLastX(); } | |
691 | double getLastY() { return subpaths[n-1]->getLastY(); } | |
692 | ||
693 | // Move the current point. | |
694 | void moveTo(double x, double y); | |
695 | ||
696 | // Add a segment to the last subpath. | |
697 | void lineTo(double x, double y); | |
698 | ||
699 | // Add a Bezier curve to the last subpath | |
700 | void curveTo(double x1, double y1, double x2, double y2, | |
701 | double x3, double y3); | |
702 | ||
703 | // Close the last subpath. | |
704 | void close() { subpaths[n-1]->close(); } | |
705 | ||
706 | private: | |
707 | ||
708 | GBool justMoved; // set if a new subpath was just started | |
709 | double firstX, firstY; // first point in new subpath | |
710 | GfxSubpath **subpaths; // subpaths | |
711 | int n; // number of subpaths | |
712 | int size; // size of subpaths array | |
713 | ||
714 | GfxPath(GBool justMoved1, double firstX1, double firstY1, | |
715 | GfxSubpath **subpaths1, int n1, int size1); | |
716 | }; | |
717 | ||
718 | //------------------------------------------------------------------------ | |
719 | // GfxState | |
720 | //------------------------------------------------------------------------ | |
721 | ||
722 | class GfxState { | |
723 | public: | |
724 | ||
725 | // Construct a default GfxState, for a device with resolution <dpi>, | |
753453e4 | 726 | // page box <pageBox>, page rotation <rotate>, and coordinate system |
727 | // specified by <upsideDown>. | |
728 | GfxState(double dpi, PDFRectangle *pageBox, int rotate, | |
729 | GBool upsideDown); | |
9c72faab | 730 | |
731 | // Destructor. | |
732 | ~GfxState(); | |
733 | ||
734 | // Copy. | |
735 | GfxState *copy() { return new GfxState(this); } | |
736 | ||
737 | // Accessors. | |
738 | double *getCTM() { return ctm; } | |
739 | double getX1() { return px1; } | |
740 | double getY1() { return py1; } | |
741 | double getX2() { return px2; } | |
742 | double getY2() { return py2; } | |
743 | double getPageWidth() { return pageWidth; } | |
744 | double getPageHeight() { return pageHeight; } | |
745 | GfxColor *getFillColor() { return &fillColor; } | |
746 | GfxColor *getStrokeColor() { return &strokeColor; } | |
753453e4 | 747 | void getFillGray(double *gray) |
748 | { fillColorSpace->getGray(&fillColor, gray); } | |
749 | void getStrokeGray(double *gray) | |
750 | { strokeColorSpace->getGray(&fillColor, gray); } | |
b5cb0608 | 751 | void getFillRGB(GfxRGB *rgb) |
752 | { fillColorSpace->getRGB(&fillColor, rgb); } | |
753 | void getStrokeRGB(GfxRGB *rgb) | |
754 | { strokeColorSpace->getRGB(&strokeColor, rgb); } | |
755 | void getFillCMYK(GfxCMYK *cmyk) | |
756 | { fillColorSpace->getCMYK(&fillColor, cmyk); } | |
757 | void getStrokeCMYK(GfxCMYK *cmyk) | |
758 | { strokeColorSpace->getCMYK(&strokeColor, cmyk); } | |
759 | GfxColorSpace *getFillColorSpace() { return fillColorSpace; } | |
760 | GfxColorSpace *getStrokeColorSpace() { return strokeColorSpace; } | |
761 | GfxPattern *getFillPattern() { return fillPattern; } | |
762 | GfxPattern *getStrokePattern() { return strokePattern; } | |
763 | double getFillOpacity() { return fillOpacity; } | |
764 | double getStrokeOpacity() { return strokeOpacity; } | |
9c72faab | 765 | double getLineWidth() { return lineWidth; } |
766 | void getLineDash(double **dash, int *length, double *start) | |
767 | { *dash = lineDash; *length = lineDashLength; *start = lineDashStart; } | |
768 | int getFlatness() { return flatness; } | |
769 | int getLineJoin() { return lineJoin; } | |
770 | int getLineCap() { return lineCap; } | |
771 | double getMiterLimit() { return miterLimit; } | |
772 | GfxFont *getFont() { return font; } | |
773 | double getFontSize() { return fontSize; } | |
774 | double *getTextMat() { return textMat; } | |
775 | double getCharSpace() { return charSpace; } | |
776 | double getWordSpace() { return wordSpace; } | |
777 | double getHorizScaling() { return horizScaling; } | |
778 | double getLeading() { return leading; } | |
779 | double getRise() { return rise; } | |
780 | int getRender() { return render; } | |
781 | GfxPath *getPath() { return path; } | |
782 | double getCurX() { return curX; } | |
783 | double getCurY() { return curY; } | |
753453e4 | 784 | void getClipBBox(double *xMin, double *yMin, double *xMax, double *yMax) |
785 | { *xMin = clipXMin; *yMin = clipYMin; *xMax = clipXMax; *yMax = clipYMax; } | |
9c72faab | 786 | double getLineX() { return lineX; } |
787 | double getLineY() { return lineY; } | |
788 | ||
789 | // Is there a current point/path? | |
790 | GBool isCurPt() { return path->isCurPt(); } | |
791 | GBool isPath() { return path->isPath(); } | |
792 | ||
793 | // Transforms. | |
794 | void transform(double x1, double y1, double *x2, double *y2) | |
795 | { *x2 = ctm[0] * x1 + ctm[2] * y1 + ctm[4]; | |
796 | *y2 = ctm[1] * x1 + ctm[3] * y1 + ctm[5]; } | |
797 | void transformDelta(double x1, double y1, double *x2, double *y2) | |
798 | { *x2 = ctm[0] * x1 + ctm[2] * y1; | |
799 | *y2 = ctm[1] * x1 + ctm[3] * y1; } | |
800 | void textTransform(double x1, double y1, double *x2, double *y2) | |
801 | { *x2 = textMat[0] * x1 + textMat[2] * y1 + textMat[4]; | |
802 | *y2 = textMat[1] * x1 + textMat[3] * y1 + textMat[5]; } | |
803 | void textTransformDelta(double x1, double y1, double *x2, double *y2) | |
804 | { *x2 = textMat[0] * x1 + textMat[2] * y1; | |
805 | *y2 = textMat[1] * x1 + textMat[3] * y1; } | |
806 | double transformWidth(double w); | |
807 | double getTransformedLineWidth() | |
808 | { return transformWidth(lineWidth); } | |
809 | double getTransformedFontSize(); | |
810 | void getFontTransMat(double *m11, double *m12, double *m21, double *m22); | |
811 | ||
812 | // Change state parameters. | |
52118ca3 | 813 | void setCTM(double a, double b, double c, |
814 | double d, double e, double f); | |
9c72faab | 815 | void concatCTM(double a, double b, double c, |
816 | double d, double e, double f); | |
9c72faab | 817 | void setFillColorSpace(GfxColorSpace *colorSpace); |
818 | void setStrokeColorSpace(GfxColorSpace *colorSpace); | |
b5cb0608 | 819 | void setFillColor(GfxColor *color) { fillColor = *color; } |
820 | void setStrokeColor(GfxColor *color) { strokeColor = *color; } | |
821 | void setFillPattern(GfxPattern *pattern); | |
822 | void setStrokePattern(GfxPattern *pattern); | |
823 | void setFillOpacity(double opac) { fillOpacity = opac; } | |
824 | void setStrokeOpacity(double opac) { strokeOpacity = opac; } | |
825 | void setLineWidth(double width) { lineWidth = width; } | |
9c72faab | 826 | void setLineDash(double *dash, int length, double start); |
827 | void setFlatness(int flatness1) { flatness = flatness1; } | |
828 | void setLineJoin(int lineJoin1) { lineJoin = lineJoin1; } | |
829 | void setLineCap(int lineCap1) { lineCap = lineCap1; } | |
753453e4 | 830 | void setMiterLimit(double limit) { miterLimit = limit; } |
831 | void setFont(GfxFont *fontA, double fontSizeA) | |
832 | { font = fontA; fontSize = fontSizeA; } | |
9c72faab | 833 | void setTextMat(double a, double b, double c, |
834 | double d, double e, double f) | |
835 | { textMat[0] = a; textMat[1] = b; textMat[2] = c; | |
836 | textMat[3] = d; textMat[4] = e; textMat[5] = f; } | |
837 | void setCharSpace(double space) | |
838 | { charSpace = space; } | |
839 | void setWordSpace(double space) | |
840 | { wordSpace = space; } | |
841 | void setHorizScaling(double scale) | |
842 | { horizScaling = 0.01 * scale; } | |
753453e4 | 843 | void setLeading(double leadingA) |
844 | { leading = leadingA; } | |
845 | void setRise(double riseA) | |
846 | { rise = riseA; } | |
847 | void setRender(int renderA) | |
848 | { render = renderA; } | |
9c72faab | 849 | |
850 | // Add to path. | |
851 | void moveTo(double x, double y) | |
852 | { path->moveTo(curX = x, curY = y); } | |
853 | void lineTo(double x, double y) | |
854 | { path->lineTo(curX = x, curY = y); } | |
855 | void curveTo(double x1, double y1, double x2, double y2, | |
856 | double x3, double y3) | |
857 | { path->curveTo(x1, y1, x2, y2, curX = x3, curY = y3); } | |
858 | void closePath() | |
859 | { path->close(); curX = path->getLastX(); curY = path->getLastY(); } | |
860 | void clearPath(); | |
861 | ||
753453e4 | 862 | // Update clip region. |
863 | void clip(); | |
864 | ||
9c72faab | 865 | // Text position. |
866 | void textMoveTo(double tx, double ty) | |
867 | { lineX = tx; lineY = ty; textTransform(tx, ty, &curX, &curY); } | |
868 | void textShift(double tx); | |
869 | void textShift(double tx, double ty); | |
870 | ||
871 | // Push/pop GfxState on/off stack. | |
872 | GfxState *save(); | |
873 | GfxState *restore(); | |
874 | GBool hasSaves() { return saved != NULL; } | |
875 | ||
876 | private: | |
877 | ||
878 | double ctm[6]; // coord transform matrix | |
879 | double px1, py1, px2, py2; // page corners (user coords) | |
880 | double pageWidth, pageHeight; // page size (pixels) | |
881 | ||
882 | GfxColorSpace *fillColorSpace; // fill color space | |
883 | GfxColorSpace *strokeColorSpace; // stroke color space | |
884 | GfxColor fillColor; // fill color | |
885 | GfxColor strokeColor; // stroke color | |
b5cb0608 | 886 | GfxPattern *fillPattern; // fill pattern |
887 | GfxPattern *strokePattern; // stroke pattern | |
888 | double fillOpacity; // fill opacity | |
889 | double strokeOpacity; // stroke opacity | |
9c72faab | 890 | |
891 | double lineWidth; // line width | |
892 | double *lineDash; // line dash | |
893 | int lineDashLength; | |
894 | double lineDashStart; | |
895 | int flatness; // curve flatness | |
896 | int lineJoin; // line join style | |
897 | int lineCap; // line cap style | |
898 | double miterLimit; // line miter limit | |
899 | ||
900 | GfxFont *font; // font | |
901 | double fontSize; // font size | |
902 | double textMat[6]; // text matrix | |
903 | double charSpace; // character spacing | |
904 | double wordSpace; // word spacing | |
905 | double horizScaling; // horizontal scaling | |
906 | double leading; // text leading | |
907 | double rise; // text rise | |
908 | int render; // text rendering mode | |
909 | ||
910 | GfxPath *path; // array of path elements | |
911 | double curX, curY; // current point (user coords) | |
912 | double lineX, lineY; // start of current text line (text coords) | |
913 | ||
753453e4 | 914 | double clipXMin, clipYMin, // bounding box for clip region |
915 | clipXMax, clipYMax; | |
916 | ||
9c72faab | 917 | GfxState *saved; // next GfxState on stack |
918 | ||
919 | GfxState(GfxState *state); | |
920 | }; | |
921 | ||
922 | #endif |