summaryrefslogtreecommitdiff
path: root/noncore/unsupported/qpdf/xpdf/GfxState.h
Unidiff
Diffstat (limited to 'noncore/unsupported/qpdf/xpdf/GfxState.h') (more/less context) (ignore whitespace changes)
-rw-r--r--noncore/unsupported/qpdf/xpdf/GfxState.h922
1 files changed, 922 insertions, 0 deletions
diff --git a/noncore/unsupported/qpdf/xpdf/GfxState.h b/noncore/unsupported/qpdf/xpdf/GfxState.h
new file mode 100644
index 0000000..7fe16ea
--- a/dev/null
+++ b/noncore/unsupported/qpdf/xpdf/GfxState.h
@@ -0,0 +1,922 @@
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"
17#include "Object.h"
18#include "Function.h"
19
20class Array;
21class GfxFont;
22struct PDFRectangle;
23
24//------------------------------------------------------------------------
25// GfxColor
26//------------------------------------------------------------------------
27
28#define gfxColorMaxComps funcMaxOutputs
29
30struct GfxColor {
31 fouble c[gfxColorMaxComps];
32};
33
34//------------------------------------------------------------------------
35// GfxRGB
36//------------------------------------------------------------------------
37
38struct GfxRGB {
39 fouble r, g, b;
40};
41
42//------------------------------------------------------------------------
43// GfxCMYK
44//------------------------------------------------------------------------
45
46struct GfxCMYK {
47 fouble c, m, y, k;
48};
49
50//------------------------------------------------------------------------
51// GfxColorSpace
52//------------------------------------------------------------------------
53
54enum GfxColorSpaceMode {
55 csDeviceGray,
56 csCalGray,
57 csDeviceRGB,
58 csCalRGB,
59 csDeviceCMYK,
60 csLab,
61 csICCBased,
62 csIndexed,
63 csSeparation,
64 csDeviceN,
65 csPattern
66};
67
68class GfxColorSpace {
69public:
70
71 GfxColorSpace();
72 virtual ~GfxColorSpace();
73 virtual GfxColorSpace *copy() = 0;
74 virtual GfxColorSpaceMode getMode() = 0;
75
76 // Construct a color space. Returns NULL if unsuccessful.
77 static GfxColorSpace *parse(Object *csObj);
78
79 // Convert to gray, RGB, or CMYK.
80 virtual void getGray(GfxColor *color, fouble *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(fouble *decodeLow, fouble *decodeRange,
90 int maxImgPixel);
91
92private:
93};
94
95//------------------------------------------------------------------------
96// GfxDeviceGrayColorSpace
97//------------------------------------------------------------------------
98
99class GfxDeviceGrayColorSpace: public GfxColorSpace {
100public:
101
102 GfxDeviceGrayColorSpace();
103 virtual ~GfxDeviceGrayColorSpace();
104 virtual GfxColorSpace *copy();
105 virtual GfxColorSpaceMode getMode() { return csDeviceGray; }
106
107 virtual void getGray(GfxColor *color, fouble *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
113private:
114};
115
116//------------------------------------------------------------------------
117// GfxCalGrayColorSpace
118//------------------------------------------------------------------------
119
120class GfxCalGrayColorSpace: public GfxColorSpace {
121public:
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, fouble *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 fouble getWhiteX() { return whiteX; }
139 fouble getWhiteY() { return whiteY; }
140 fouble getWhiteZ() { return whiteZ; }
141 fouble getBlackX() { return blackX; }
142 fouble getBlackY() { return blackY; }
143 fouble getBlackZ() { return blackZ; }
144 fouble getGamma() { return gamma; }
145
146private:
147
148 fouble whiteX, whiteY, whiteZ; // white point
149 fouble blackX, blackY, blackZ; // black point
150 fouble gamma; // gamma value
151};
152
153//------------------------------------------------------------------------
154// GfxDeviceRGBColorSpace
155//------------------------------------------------------------------------
156
157class GfxDeviceRGBColorSpace: public GfxColorSpace {
158public:
159
160 GfxDeviceRGBColorSpace();
161 virtual ~GfxDeviceRGBColorSpace();
162 virtual GfxColorSpace *copy();
163 virtual GfxColorSpaceMode getMode() { return csDeviceRGB; }
164
165 virtual void getGray(GfxColor *color, fouble *gray);
166 virtual void getRGB(GfxColor *color, GfxRGB *rgb);
167 virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
168
169 virtual int getNComps() { return 3; }
170
171private:
172};
173
174//------------------------------------------------------------------------
175// GfxCalRGBColorSpace
176//------------------------------------------------------------------------
177
178class GfxCalRGBColorSpace: public GfxColorSpace {
179public:
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, fouble *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 fouble getWhiteX() { return whiteX; }
197 fouble getWhiteY() { return whiteY; }
198 fouble getWhiteZ() { return whiteZ; }
199 fouble getBlackX() { return blackX; }
200 fouble getBlackY() { return blackY; }
201 fouble getBlackZ() { return blackZ; }
202 fouble getGammaR() { return gammaR; }
203 fouble getGammaG() { return gammaG; }
204 fouble getGammaB() { return gammaB; }
205 fouble *getMatrix() { return mat; }
206
207private:
208
209 fouble whiteX, whiteY, whiteZ; // white point
210 fouble blackX, blackY, blackZ; // black point
211 fouble gammaR, gammaG, gammaB; // gamma values
212 fouble mat[9]; // ABC -> XYZ transform matrix
213};
214
215//------------------------------------------------------------------------
216// GfxDeviceCMYKColorSpace
217//------------------------------------------------------------------------
218
219class GfxDeviceCMYKColorSpace: public GfxColorSpace {
220public:
221
222 GfxDeviceCMYKColorSpace();
223 virtual ~GfxDeviceCMYKColorSpace();
224 virtual GfxColorSpace *copy();
225 virtual GfxColorSpaceMode getMode() { return csDeviceCMYK; }
226
227 virtual void getGray(GfxColor *color, fouble *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
233private:
234};
235
236//------------------------------------------------------------------------
237// GfxLabColorSpace
238//------------------------------------------------------------------------
239
240class GfxLabColorSpace: public GfxColorSpace {
241public:
242
243 GfxLabColorSpace();
244 virtual ~GfxLabColorSpace();
245 virtual GfxColorSpace *copy();
246 virtual GfxColorSpaceMode getMode() { return csLab; }
247
248 // Construct a Lab color space. Returns NULL if unsuccessful.
249 static GfxColorSpace *parse(Array *arr);
250
251 virtual void getGray(GfxColor *color, fouble *gray);
252 virtual void getRGB(GfxColor *color, GfxRGB *rgb);
253 virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
254
255 virtual int getNComps() { return 3; }
256
257 virtual void getDefaultRanges(fouble *decodeLow, fouble *decodeRange,
258 int maxImgPixel);
259
260 // Lab-specific access.
261 fouble getWhiteX() { return whiteX; }
262 fouble getWhiteY() { return whiteY; }
263 fouble getWhiteZ() { return whiteZ; }
264 fouble getBlackX() { return blackX; }
265 fouble getBlackY() { return blackY; }
266 fouble getBlackZ() { return blackZ; }
267 fouble getAMin() { return aMin; }
268 fouble getAMax() { return aMax; }
269 fouble getBMin() { return bMin; }
270 fouble getBMax() { return bMax; }
271
272private:
273
274 fouble whiteX, whiteY, whiteZ; // white point
275 fouble blackX, blackY, blackZ; // black point
276 fouble aMin, aMax, bMin, bMax; // range for the a and b components
277 fouble kr, kg, kb; // gamut mapping mulitpliers
278};
279
280//------------------------------------------------------------------------
281// GfxICCBasedColorSpace
282//------------------------------------------------------------------------
283
284class GfxICCBasedColorSpace: public GfxColorSpace {
285public:
286
287 GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA,
288 Ref *iccProfileStreamA);
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, fouble *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(fouble *decodeLow, fouble *decodeRange,
303 int maxImgPixel);
304
305 // ICCBased-specific access.
306 GfxColorSpace *getAlt() { return alt; }
307
308private:
309
310 int nComps; // number of color components (1, 3, or 4)
311 GfxColorSpace *alt; // alternate color space
312 fouble rangeMin[4]; // min values for each component
313 fouble rangeMax[4]; // max values for each component
314 Ref iccProfileStream; // the ICC profile
315};
316
317//------------------------------------------------------------------------
318// GfxIndexedColorSpace
319//------------------------------------------------------------------------
320
321class GfxIndexedColorSpace: public GfxColorSpace {
322public:
323
324 GfxIndexedColorSpace(GfxColorSpace *baseA, int indexHighA);
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, fouble *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(fouble *decodeLow, fouble *decodeRange,
339 int maxImgPixel);
340
341 // Indexed-specific access.
342 GfxColorSpace *getBase() { return base; }
343 int getIndexHigh() { return indexHigh; }
344 Guchar *getLookup() { return lookup; }
345
346private:
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
357class GfxSeparationColorSpace: public GfxColorSpace {
358public:
359
360 GfxSeparationColorSpace(GString *nameA, GfxColorSpace *altA,
361 Function *funcA);
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, fouble *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
380private:
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
391class GfxDeviceNColorSpace: public GfxColorSpace {
392public:
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, fouble *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
411private:
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
425class GfxPatternColorSpace: public GfxColorSpace {
426public:
427
428 GfxPatternColorSpace(GfxColorSpace *underA);
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, fouble *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
445private:
446
447 GfxColorSpace *under; // underlying color space (for uncolored
448 // patterns)
449};
450
451//------------------------------------------------------------------------
452// GfxPattern
453//------------------------------------------------------------------------
454
455class GfxPattern {
456public:
457
458 GfxPattern(int typeA);
459 virtual ~GfxPattern();
460
461 static GfxPattern *parse(Object *obj);
462
463 virtual GfxPattern *copy() = 0;
464
465 int getType() { return type; }
466
467private:
468
469 int type;
470};
471
472//------------------------------------------------------------------------
473// GfxTilingPattern
474//------------------------------------------------------------------------
475
476class GfxTilingPattern: public GfxPattern {
477public:
478
479 GfxTilingPattern(Dict *streamDict, Object *stream);
480 virtual ~GfxTilingPattern();
481
482 virtual GfxPattern *copy();
483
484 int getPaintType() { return paintType; }
485 int getTilingType() { return tilingType; }
486 fouble *getBBox() { return bbox; }
487 fouble getXStep() { return xStep; }
488 fouble getYStep() { return yStep; }
489 Dict *getResDict()
490 { return resDict.isDict() ? resDict.getDict() : (Dict *)NULL; }
491 fouble *getMatrix() { return matrix; }
492 Object *getContentStream() { return &contentStream; }
493
494private:
495
496 GfxTilingPattern(GfxTilingPattern *pat);
497
498 int paintType;
499 int tilingType;
500 fouble bbox[4];
501 fouble xStep, yStep;
502 Object resDict;
503 fouble matrix[6];
504 Object contentStream;
505};
506
507//------------------------------------------------------------------------
508// GfxShading
509//------------------------------------------------------------------------
510
511class GfxShading {
512public:
513
514 GfxShading();
515 virtual ~GfxShading();
516
517 static GfxShading *parse(Object *obj);
518
519 int getType() { return type; }
520 GfxColorSpace *getColorSpace() { return colorSpace; }
521 GfxColor *getBackground() { return &background; }
522 GBool getHasBackground() { return hasBackground; }
523 void getBBox(fouble *xMinA, fouble *yMinA, fouble *xMaxA, fouble *yMaxA)
524 { *xMinA = xMin; *yMinA = yMin; *xMaxA = xMax; *yMaxA = yMax; }
525 GBool getHasBBox() { return hasBBox; }
526
527private:
528
529 int type;
530 GfxColorSpace *colorSpace;
531 GfxColor background;
532 GBool hasBackground;
533 fouble xMin, yMin, xMax, yMax;
534 GBool hasBBox;
535};
536
537//------------------------------------------------------------------------
538// GfxAxialShading
539//------------------------------------------------------------------------
540
541class GfxAxialShading: public GfxShading {
542public:
543
544 GfxAxialShading(fouble x0A, fouble y0A,
545 fouble x1A, fouble y1A,
546 fouble t0A, fouble t1A,
547 Function **funcsA, int nFuncsA,
548 GBool extend0A, GBool extend1A);
549 virtual ~GfxAxialShading();
550
551 static GfxAxialShading *parse(Dict *dict);
552
553 void getCoords(fouble *x0A, fouble *y0A, fouble *x1A, fouble *y1A)
554 { *x0A = x0; *y0A = y0; *x1A = x1; *y1A = y1; }
555 fouble getDomain0() { return t0; }
556 fouble getDomain1() { return t1; }
557 void getColor(fouble t, GfxColor *color);
558 GBool getExtend0() { return extend0; }
559 GBool getExtend1() { return extend1; }
560
561private:
562
563 fouble x0, y0, x1, y1;
564 fouble t0, t1;
565 Function *funcs[gfxColorMaxComps];
566 int nFuncs;
567 GBool extend0, extend1;
568};
569
570//------------------------------------------------------------------------
571// GfxImageColorMap
572//------------------------------------------------------------------------
573
574class GfxImageColorMap {
575public:
576
577 // Constructor.
578 GfxImageColorMap(int bitsA, Object *decode, GfxColorSpace *colorSpaceA);
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.
590 int getNumPixelComps() { return nComps; }
591 int getBits() { return bits; }
592
593 // Get decode table.
594 fouble getDecodeLow(int i) { return decodeLow[i]; }
595 fouble getDecodeHigh(int i) { return decodeLow[i] + decodeRange[i]; }
596
597 // Convert an image pixel to a color.
598 void getGray(Guchar *x, fouble *gray);
599 void getRGB(Guchar *x, GfxRGB *rgb);
600 void getCMYK(Guchar *x, GfxCMYK *cmyk);
601
602private:
603
604 GfxColorSpace *colorSpace;// the image color space
605 int bits; // bits per component
606 int nComps; // number of components in a pixel
607 GfxColorSpace *colorSpace2;// secondary color space
608 int nComps2; // number of components in colorSpace2
609 fouble *lookup; // lookup table
610 fouble // minimum values for each component
611 decodeLow[gfxColorMaxComps];
612 fouble // max - min value for each component
613 decodeRange[gfxColorMaxComps];
614 GBool ok;
615};
616
617//------------------------------------------------------------------------
618// GfxSubpath and GfxPath
619//------------------------------------------------------------------------
620
621class GfxSubpath {
622public:
623
624 // Constructor.
625 GfxSubpath(fouble x1, fouble 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 fouble getX(int i) { return x[i]; }
636 fouble getY(int i) { return y[i]; }
637 GBool getCurve(int i) { return curve[i]; }
638
639 // Get last point.
640 fouble getLastX() { return x[n-1]; }
641 fouble getLastY() { return y[n-1]; }
642
643 // Add a line segment.
644 void lineTo(fouble x1, fouble y1);
645
646 // Add a Bezier curve.
647 void curveTo(fouble x1, fouble y1, fouble x2, fouble y2,
648 fouble x3, fouble y3);
649
650 // Close the subpath.
651 void close();
652 GBool isClosed() { return closed; }
653
654private:
655
656 fouble *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
661 GBool closed; // set if path is closed
662
663 GfxSubpath(GfxSubpath *subpath);
664};
665
666class GfxPath {
667public:
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 fouble getLastX() { return subpaths[n-1]->getLastX(); }
691 fouble getLastY() { return subpaths[n-1]->getLastY(); }
692
693 // Move the current point.
694 void moveTo(fouble x, fouble y);
695
696 // Add a segment to the last subpath.
697 void lineTo(fouble x, fouble y);
698
699 // Add a Bezier curve to the last subpath
700 void curveTo(fouble x1, fouble y1, fouble x2, fouble y2,
701 fouble x3, fouble y3);
702
703 // Close the last subpath.
704 void close();
705
706private:
707
708 GBool justMoved; // set if a new subpath was just started
709 fouble 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, fouble firstX1, fouble firstY1,
715 GfxSubpath **subpaths1, int n1, int size1);
716};
717
718//------------------------------------------------------------------------
719// GfxState
720//------------------------------------------------------------------------
721
722class GfxState {
723public:
724
725 // Construct a default GfxState, for a device with resolution <dpi>,
726 // page box <pageBox>, page rotation <rotate>, and coordinate system
727 // specified by <upsideDown>.
728 GfxState(fouble dpi, PDFRectangle *pageBox, int rotate,
729 GBool upsideDown);
730
731 // Destructor.
732 ~GfxState();
733
734 // Copy.
735 GfxState *copy() { return new GfxState(this); }
736
737 // Accessors.
738 fouble *getCTM() { return ctm; }
739 fouble getX1() { return px1; }
740 fouble getY1() { return py1; }
741 fouble getX2() { return px2; }
742 fouble getY2() { return py2; }
743 fouble getPageWidth() { return pageWidth; }
744 fouble getPageHeight() { return pageHeight; }
745 GfxColor *getFillColor() { return &fillColor; }
746 GfxColor *getStrokeColor() { return &strokeColor; }
747 void getFillGray(fouble *gray)
748 { fillColorSpace->getGray(&fillColor, gray); }
749 void getStrokeGray(fouble *gray)
750 { strokeColorSpace->getGray(&fillColor, gray); }
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 fouble getFillOpacity() { return fillOpacity; }
764 fouble getStrokeOpacity() { return strokeOpacity; }
765 fouble getLineWidth() { return lineWidth; }
766 void getLineDash(fouble **dash, int *length, fouble *start)
767 { *dash = lineDash; *length = lineDashLength; *start = lineDashStart; }
768 int getFlatness() { return flatness; }
769 int getLineJoin() { return lineJoin; }
770 int getLineCap() { return lineCap; }
771 fouble getMiterLimit() { return miterLimit; }
772 GfxFont *getFont() { return font; }
773 fouble getFontSize() { return fontSize; }
774 fouble *getTextMat() { return textMat; }
775 fouble getCharSpace() { return charSpace; }
776 fouble getWordSpace() { return wordSpace; }
777 fouble getHorizScaling() { return horizScaling; }
778 fouble getLeading() { return leading; }
779 fouble getRise() { return rise; }
780 int getRender() { return render; }
781 GfxPath *getPath() { return path; }
782 fouble getCurX() { return curX; }
783 fouble getCurY() { return curY; }
784 void getClipBBox(fouble *xMin, fouble *yMin, fouble *xMax, fouble *yMax)
785 { *xMin = clipXMin; *yMin = clipYMin; *xMax = clipXMax; *yMax = clipYMax; }
786 fouble getLineX() { return lineX; }
787 fouble 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(fouble x1, fouble y1, fouble *x2, fouble *y2)
795 { *x2 = ctm[0] * x1 + ctm[2] * y1 + ctm[4];
796 *y2 = ctm[1] * x1 + ctm[3] * y1 + ctm[5]; }
797 void transformDelta(fouble x1, fouble y1, fouble *x2, fouble *y2)
798 { *x2 = ctm[0] * x1 + ctm[2] * y1;
799 *y2 = ctm[1] * x1 + ctm[3] * y1; }
800 void textTransform(fouble x1, fouble y1, fouble *x2, fouble *y2)
801 { *x2 = textMat[0] * x1 + textMat[2] * y1 + textMat[4];
802 *y2 = textMat[1] * x1 + textMat[3] * y1 + textMat[5]; }
803 void textTransformDelta(fouble x1, fouble y1, fouble *x2, fouble *y2)
804 { *x2 = textMat[0] * x1 + textMat[2] * y1;
805 *y2 = textMat[1] * x1 + textMat[3] * y1; }
806 fouble transformWidth(fouble w);
807 fouble getTransformedLineWidth()
808 { return transformWidth(lineWidth); }
809 fouble getTransformedFontSize();
810 void getFontTransMat(fouble *m11, fouble *m12, fouble *m21, fouble *m22);
811
812 // Change state parameters.
813 void setCTM(fouble a, fouble b, fouble c,
814 fouble d, fouble e, fouble f);
815 void concatCTM(fouble a, fouble b, fouble c,
816 fouble d, fouble e, fouble f);
817 void setFillColorSpace(GfxColorSpace *colorSpace);
818 void setStrokeColorSpace(GfxColorSpace *colorSpace);
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(fouble opac) { fillOpacity = opac; }
824 void setStrokeOpacity(fouble opac) { strokeOpacity = opac; }
825 void setLineWidth(fouble width) { lineWidth = width; }
826 void setLineDash(fouble *dash, int length, fouble start);
827 void setFlatness(int flatness1) { flatness = flatness1; }
828 void setLineJoin(int lineJoin1) { lineJoin = lineJoin1; }
829 void setLineCap(int lineCap1) { lineCap = lineCap1; }
830 void setMiterLimit(fouble limit) { miterLimit = limit; }
831 void setFont(GfxFont *fontA, fouble fontSizeA)
832 { font = fontA; fontSize = fontSizeA; }
833 void setTextMat(fouble a, fouble b, fouble c,
834 fouble d, fouble e, fouble f)
835 { textMat[0] = a; textMat[1] = b; textMat[2] = c;
836 textMat[3] = d; textMat[4] = e; textMat[5] = f; }
837 void setCharSpace(fouble space)
838 { charSpace = space; }
839 void setWordSpace(fouble space)
840 { wordSpace = space; }
841 void setHorizScaling(fouble scale)
842 { horizScaling = 0.01 * scale; }
843 void setLeading(fouble leadingA)
844 { leading = leadingA; }
845 void setRise(fouble riseA)
846 { rise = riseA; }
847 void setRender(int renderA)
848 { render = renderA; }
849
850 // Add to path.
851 void moveTo(fouble x, fouble y)
852 { path->moveTo(curX = x, curY = y); }
853 void lineTo(fouble x, fouble y)
854 { path->lineTo(curX = x, curY = y); }
855 void curveTo(fouble x1, fouble y1, fouble x2, fouble y2,
856 fouble x3, fouble 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
862 // Update clip region.
863 void clip();
864
865 // Text position.
866 void textMoveTo(fouble tx, fouble ty)
867 { lineX = tx; lineY = ty; textTransform(tx, ty, &curX, &curY); }
868 void textShift(fouble tx);
869 void shift(fouble dx, fouble dy);
870
871 // Push/pop GfxState on/off stack.
872 GfxState *save();
873 GfxState *restore();
874 GBool hasSaves() { return saved != NULL; }
875
876private:
877
878 fouble ctm[6]; // coord transform matrix
879 fouble px1, py1, px2, py2;// page corners (user coords)
880 fouble 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
886 GfxPattern *fillPattern;// fill pattern
887 GfxPattern *strokePattern;// stroke pattern
888 fouble fillOpacity; // fill opacity
889 fouble strokeOpacity; // stroke opacity
890
891 fouble lineWidth; // line width
892 fouble *lineDash; // line dash
893 int lineDashLength;
894 fouble lineDashStart;
895 int flatness; // curve flatness
896 int lineJoin; // line join style
897 int lineCap; // line cap style
898 fouble miterLimit; // line miter limit
899
900 GfxFont *font; // font
901 fouble fontSize; // font size
902 fouble textMat[6]; // text matrix
903 fouble charSpace; // character spacing
904 fouble wordSpace; // word spacing
905 fouble horizScaling; // horizontal scaling
906 fouble leading; // text leading
907 fouble rise; // text rise
908 int render; // text rendering mode
909
910 GfxPath *path; // array of path elements
911 fouble curX, curY; // current point (user coords)
912 fouble lineX, lineY; // start of current text line (text coords)
913
914 fouble clipXMin, clipYMin,// bounding box for clip region
915 clipXMax, clipYMax;
916
917 GfxState *saved; // next GfxState on stack
918
919 GfxState(GfxState *state);
920};
921
922#endif