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ef416fc2 | 1 | //======================================================================== |
2 | // | |
3 | // Splash.cc | |
4 | // | |
5 | //======================================================================== | |
6 | ||
7 | #include <config.h> | |
8 | ||
9 | #ifdef USE_GCC_PRAGMAS | |
10 | #pragma implementation | |
11 | #endif | |
12 | ||
13 | #include <stdlib.h> | |
14 | #include <string.h> | |
15 | #include "gmem.h" | |
16 | #include "SplashErrorCodes.h" | |
17 | #include "SplashMath.h" | |
18 | #include "SplashBitmap.h" | |
19 | #include "SplashState.h" | |
20 | #include "SplashPath.h" | |
21 | #include "SplashXPath.h" | |
22 | #include "SplashXPathScanner.h" | |
23 | #include "SplashPattern.h" | |
24 | #include "SplashScreen.h" | |
25 | #include "SplashFont.h" | |
26 | #include "SplashGlyphBitmap.h" | |
27 | #include "Splash.h" | |
28 | ||
29 | //------------------------------------------------------------------------ | |
30 | ||
31 | static void blendNormal(SplashColorPtr src, SplashColorPtr dest, | |
32 | SplashColorPtr blend, SplashColorMode cm) { | |
33 | int i; | |
34 | ||
35 | for (i = 0; i < splashColorModeNComps[cm]; ++i) { | |
36 | blend[i] = src[i]; | |
37 | } | |
38 | } | |
39 | ||
40 | //------------------------------------------------------------------------ | |
41 | // Splash | |
42 | //------------------------------------------------------------------------ | |
43 | ||
44 | Splash::Splash(SplashBitmap *bitmapA) { | |
45 | bitmap = bitmapA; | |
46 | state = new SplashState(bitmap->width, bitmap->height); | |
47 | softMask = NULL; | |
48 | clearModRegion(); | |
49 | debugMode = gFalse; | |
50 | } | |
51 | ||
52 | Splash::~Splash() { | |
53 | while (state->next) { | |
54 | restoreState(); | |
55 | } | |
56 | delete state; | |
57 | if (softMask) { | |
58 | delete softMask; | |
59 | } | |
60 | } | |
61 | ||
62 | //------------------------------------------------------------------------ | |
63 | // state read | |
64 | //------------------------------------------------------------------------ | |
65 | ||
66 | SplashPattern *Splash::getStrokePattern() { | |
67 | return state->strokePattern; | |
68 | } | |
69 | ||
70 | SplashPattern *Splash::getFillPattern() { | |
71 | return state->fillPattern; | |
72 | } | |
73 | ||
74 | SplashScreen *Splash::getScreen() { | |
75 | return state->screen; | |
76 | } | |
77 | ||
78 | SplashBlendFunc Splash::getBlendFunc() { | |
79 | return state->blendFunc; | |
80 | } | |
81 | ||
82 | SplashCoord Splash::getStrokeAlpha() { | |
83 | return state->strokeAlpha; | |
84 | } | |
85 | ||
86 | SplashCoord Splash::getFillAlpha() { | |
87 | return state->fillAlpha; | |
88 | } | |
89 | ||
90 | SplashCoord Splash::getLineWidth() { | |
91 | return state->lineWidth; | |
92 | } | |
93 | ||
94 | int Splash::getLineCap() { | |
95 | return state->lineCap; | |
96 | } | |
97 | ||
98 | int Splash::getLineJoin() { | |
99 | return state->lineJoin; | |
100 | } | |
101 | ||
102 | SplashCoord Splash::getMiterLimit() { | |
103 | return state->miterLimit; | |
104 | } | |
105 | ||
106 | SplashCoord Splash::getFlatness() { | |
107 | return state->flatness; | |
108 | } | |
109 | ||
110 | SplashCoord *Splash::getLineDash() { | |
111 | return state->lineDash; | |
112 | } | |
113 | ||
114 | int Splash::getLineDashLength() { | |
115 | return state->lineDashLength; | |
116 | } | |
117 | ||
118 | SplashCoord Splash::getLineDashPhase() { | |
119 | return state->lineDashPhase; | |
120 | } | |
121 | ||
122 | SplashClip *Splash::getClip() { | |
123 | return state->clip; | |
124 | } | |
125 | ||
126 | //------------------------------------------------------------------------ | |
127 | // state write | |
128 | //------------------------------------------------------------------------ | |
129 | ||
130 | void Splash::setStrokePattern(SplashPattern *strokePattern) { | |
131 | state->setStrokePattern(strokePattern); | |
132 | } | |
133 | ||
134 | void Splash::setFillPattern(SplashPattern *fillPattern) { | |
135 | state->setFillPattern(fillPattern); | |
136 | } | |
137 | ||
138 | void Splash::setScreen(SplashScreen *screen) { | |
139 | state->setScreen(screen); | |
140 | } | |
141 | ||
142 | void Splash::setBlendFunc(SplashBlendFunc func) { | |
143 | state->blendFunc = func; | |
144 | } | |
145 | ||
146 | void Splash::setStrokeAlpha(SplashCoord alpha) { | |
147 | state->strokeAlpha = alpha; | |
148 | } | |
149 | ||
150 | void Splash::setFillAlpha(SplashCoord alpha) { | |
151 | state->fillAlpha = alpha; | |
152 | } | |
153 | ||
154 | void Splash::setLineWidth(SplashCoord lineWidth) { | |
155 | state->lineWidth = lineWidth; | |
156 | } | |
157 | ||
158 | void Splash::setLineCap(int lineCap) { | |
159 | state->lineCap = lineCap; | |
160 | } | |
161 | ||
162 | void Splash::setLineJoin(int lineJoin) { | |
163 | state->lineJoin = lineJoin; | |
164 | } | |
165 | ||
166 | void Splash::setMiterLimit(SplashCoord miterLimit) { | |
167 | state->miterLimit = miterLimit; | |
168 | } | |
169 | ||
170 | void Splash::setFlatness(SplashCoord flatness) { | |
171 | if (flatness < 1) { | |
172 | state->flatness = 1; | |
173 | } else { | |
174 | state->flatness = flatness; | |
175 | } | |
176 | } | |
177 | ||
178 | void Splash::setLineDash(SplashCoord *lineDash, int lineDashLength, | |
179 | SplashCoord lineDashPhase) { | |
180 | state->setLineDash(lineDash, lineDashLength, lineDashPhase); | |
181 | } | |
182 | ||
183 | void Splash::clipResetToRect(SplashCoord x0, SplashCoord y0, | |
184 | SplashCoord x1, SplashCoord y1) { | |
185 | state->clip->resetToRect(x0, y0, x1, y1); | |
186 | } | |
187 | ||
188 | SplashError Splash::clipToRect(SplashCoord x0, SplashCoord y0, | |
189 | SplashCoord x1, SplashCoord y1) { | |
190 | return state->clip->clipToRect(x0, y0, x1, y1); | |
191 | } | |
192 | ||
193 | SplashError Splash::clipToPath(SplashPath *path, GBool eo) { | |
194 | return state->clip->clipToPath(path, state->flatness, eo); | |
195 | } | |
196 | ||
197 | //------------------------------------------------------------------------ | |
198 | // state save/restore | |
199 | //------------------------------------------------------------------------ | |
200 | ||
201 | void Splash::saveState() { | |
202 | SplashState *newState; | |
203 | ||
204 | newState = state->copy(); | |
205 | newState->next = state; | |
206 | state = newState; | |
207 | } | |
208 | ||
209 | SplashError Splash::restoreState() { | |
210 | SplashState *oldState; | |
211 | ||
212 | if (!state->next) { | |
213 | return splashErrNoSave; | |
214 | } | |
215 | oldState = state; | |
216 | state = state->next; | |
217 | delete oldState; | |
218 | return splashOk; | |
219 | } | |
220 | ||
221 | //------------------------------------------------------------------------ | |
222 | // soft mask | |
223 | //------------------------------------------------------------------------ | |
224 | ||
225 | void Splash::setSoftMask(SplashBitmap *softMaskA) { | |
226 | if (softMask) { | |
227 | delete softMask; | |
228 | } | |
229 | softMask = softMaskA; | |
230 | } | |
231 | ||
232 | //------------------------------------------------------------------------ | |
233 | // modified region | |
234 | //------------------------------------------------------------------------ | |
235 | ||
236 | void Splash::clearModRegion() { | |
237 | modXMin = bitmap->getWidth(); | |
238 | modYMin = bitmap->getHeight(); | |
239 | modXMax = -1; | |
240 | modYMax = -1; | |
241 | } | |
242 | ||
243 | inline void Splash::updateModX(int x) { | |
244 | if (x < modXMin) { | |
245 | modXMin = x; | |
246 | } | |
247 | if (x > modXMax) { | |
248 | modXMax = x; | |
249 | } | |
250 | } | |
251 | ||
252 | inline void Splash::updateModY(int y) { | |
253 | if (y < modYMin) { | |
254 | modYMin = y; | |
255 | } | |
256 | if (y > modYMax) { | |
257 | modYMax = y; | |
258 | } | |
259 | } | |
260 | ||
261 | //------------------------------------------------------------------------ | |
262 | // drawing operations | |
263 | //------------------------------------------------------------------------ | |
264 | ||
265 | void Splash::clear(SplashColorPtr color) { | |
266 | SplashColorPtr row, p; | |
267 | Guchar mono; | |
268 | int x, y; | |
269 | ||
270 | switch (bitmap->mode) { | |
271 | case splashModeMono1: | |
272 | mono = color[0] ? 0xff : 0x00; | |
273 | if (bitmap->rowSize < 0) { | |
274 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
275 | mono, -bitmap->rowSize * bitmap->height); | |
276 | } else { | |
277 | memset(bitmap->data, mono, bitmap->rowSize * bitmap->height); | |
278 | } | |
279 | break; | |
280 | case splashModeMono8: | |
281 | if (bitmap->rowSize < 0) { | |
282 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
283 | color[0], -bitmap->rowSize * bitmap->height); | |
284 | } else { | |
285 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); | |
286 | } | |
287 | break; | |
288 | case splashModeAMono8: | |
289 | if (color[0] == color[1]) { | |
290 | if (bitmap->rowSize < 0) { | |
291 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
292 | color[0], -bitmap->rowSize * bitmap->height); | |
293 | } else { | |
294 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); | |
295 | } | |
296 | } else { | |
297 | row = bitmap->data; | |
298 | for (y = 0; y < bitmap->height; ++y) { | |
299 | p = row; | |
300 | for (x = 0; x < bitmap->width; ++x) { | |
301 | *p++ = color[0]; | |
302 | *p++ = color[1]; | |
303 | } | |
304 | row += bitmap->rowSize; | |
305 | } | |
306 | } | |
307 | break; | |
308 | case splashModeRGB8: | |
309 | case splashModeBGR8: | |
310 | if (color[0] == color[1] && color[1] == color[2]) { | |
311 | if (bitmap->rowSize < 0) { | |
312 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
313 | color[0], -bitmap->rowSize * bitmap->height); | |
314 | } else { | |
315 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); | |
316 | } | |
317 | } else { | |
318 | row = bitmap->data; | |
319 | for (y = 0; y < bitmap->height; ++y) { | |
320 | p = row; | |
321 | for (x = 0; x < bitmap->width; ++x) { | |
322 | *p++ = color[0]; | |
323 | *p++ = color[1]; | |
324 | *p++ = color[2]; | |
325 | } | |
326 | row += bitmap->rowSize; | |
327 | } | |
328 | } | |
329 | break; | |
330 | case splashModeARGB8: | |
331 | case splashModeBGRA8: | |
332 | #if SPLASH_CMYK | |
333 | case splashModeCMYK8: | |
334 | #endif | |
335 | if (color[0] == color[1] && color[1] == color[2] && color[2] == color[3]) { | |
336 | if (bitmap->rowSize < 0) { | |
337 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
338 | color[0], -bitmap->rowSize * bitmap->height); | |
339 | } else { | |
340 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); | |
341 | } | |
342 | } else { | |
343 | row = bitmap->data; | |
344 | for (y = 0; y < bitmap->height; ++y) { | |
345 | p = row; | |
346 | for (x = 0; x < bitmap->width; ++x) { | |
347 | *p++ = color[0]; | |
348 | *p++ = color[1]; | |
349 | *p++ = color[2]; | |
350 | *p++ = color[3]; | |
351 | } | |
352 | row += bitmap->rowSize; | |
353 | } | |
354 | } | |
355 | break; | |
356 | #if SPLASH_CMYK | |
357 | case splashModeACMYK8: | |
358 | if (color[0] == color[1] && color[1] == color[2] && | |
359 | color[2] == color[3] && color[3] == color[4]) { | |
360 | if (bitmap->rowSize < 0) { | |
361 | memset(bitmap->data + bitmap->rowSize * (bitmap->height - 1), | |
362 | color[0], -bitmap->rowSize * bitmap->height); | |
363 | } else { | |
364 | memset(bitmap->data, color[0], bitmap->rowSize * bitmap->height); | |
365 | } | |
366 | } else { | |
367 | row = bitmap->data; | |
368 | for (y = 0; y < bitmap->height; ++y) { | |
369 | p = row; | |
370 | for (x = 0; x < bitmap->width; ++x) { | |
371 | *p++ = color[0]; | |
372 | *p++ = color[1]; | |
373 | *p++ = color[2]; | |
374 | *p++ = color[3]; | |
375 | *p++ = color[4]; | |
376 | } | |
377 | row += bitmap->rowSize; | |
378 | } | |
379 | } | |
380 | break; | |
381 | #endif | |
382 | } | |
383 | ||
384 | updateModX(0); | |
385 | updateModY(0); | |
386 | updateModX(bitmap->width - 1); | |
387 | updateModY(bitmap->height - 1); | |
388 | } | |
389 | ||
390 | SplashError Splash::stroke(SplashPath *path) { | |
391 | SplashXPath *xPath, *xPath2; | |
392 | ||
393 | if (debugMode) { | |
394 | printf("stroke [dash:%d] [width:%.2f]:\n", | |
395 | state->lineDashLength, (double)state->lineWidth); | |
396 | dumpPath(path); | |
397 | } | |
398 | opClipRes = splashClipAllOutside; | |
399 | if (path->length == 0) { | |
400 | return splashErrEmptyPath; | |
401 | } | |
402 | xPath = new SplashXPath(path, state->flatness, gFalse); | |
403 | if (xPath->length == 0) { | |
404 | delete xPath; | |
405 | return splashErrEmptyPath; | |
406 | } | |
407 | if (state->lineDashLength > 0) { | |
408 | xPath2 = makeDashedPath(xPath); | |
409 | delete xPath; | |
410 | xPath = xPath2; | |
411 | } | |
412 | if (state->lineWidth <= 1) { | |
413 | strokeNarrow(xPath); | |
414 | } else { | |
415 | strokeWide(xPath); | |
416 | } | |
417 | delete xPath; | |
418 | return splashOk; | |
419 | } | |
420 | ||
421 | void Splash::strokeNarrow(SplashXPath *xPath) { | |
422 | SplashXPathSeg *seg; | |
423 | int x0, x1, x2, x3, y0, y1, x, y, t; | |
424 | SplashCoord dx, dy, dxdy; | |
425 | SplashClipResult clipRes; | |
426 | int nClipRes[3]; | |
427 | int i; | |
428 | ||
429 | for (i = 0, seg = xPath->segs; i < xPath->length; ++i, ++seg) { | |
430 | ||
431 | x0 = splashFloor(seg->x0); | |
432 | x1 = splashFloor(seg->x1); | |
433 | y0 = splashFloor(seg->y0); | |
434 | y1 = splashFloor(seg->y1); | |
435 | ||
436 | // horizontal segment | |
437 | if (y0 == y1) { | |
438 | if (x0 > x1) { | |
439 | t = x0; x0 = x1; x1 = t; | |
440 | } | |
441 | if ((clipRes = state->clip->testSpan(x0, x1, y0)) | |
442 | != splashClipAllOutside) { | |
443 | drawSpan(x0, x1, y0, state->strokePattern, state->strokeAlpha, | |
444 | clipRes == splashClipAllInside); | |
445 | } | |
446 | ||
447 | // segment with |dx| > |dy| | |
448 | } else if (splashAbs(seg->dxdy) > 1) { | |
449 | dx = seg->x1 - seg->x0; | |
450 | dy = seg->y1 - seg->y0; | |
451 | dxdy = seg->dxdy; | |
452 | if (y0 > y1) { | |
453 | t = y0; y0 = y1; y1 = t; | |
454 | t = x0; x0 = x1; x1 = t; | |
455 | dx = -dx; | |
456 | dy = -dy; | |
457 | } | |
458 | if ((clipRes = state->clip->testRect(x0 <= x1 ? x0 : x1, y0, | |
459 | x0 <= x1 ? x1 : x0, y1)) | |
460 | != splashClipAllOutside) { | |
461 | if (dx > 0) { | |
462 | x2 = x0; | |
463 | x3 = splashFloor(seg->x0 + ((SplashCoord)y0 + 1 - seg->y0) * dxdy); | |
464 | drawSpan(x2, (x2 <= x3 - 1) ? x3 - 1 : x2, y0, state->strokePattern, | |
465 | state->strokeAlpha, clipRes == splashClipAllInside); | |
466 | x2 = x3; | |
467 | for (y = y0 + 1; y <= y1 - 1; ++y) { | |
468 | x3 = splashFloor(seg->x0 + ((SplashCoord)y + 1 - seg->y0) * dxdy); | |
469 | drawSpan(x2, x3 - 1, y, state->strokePattern, | |
470 | state->strokeAlpha, clipRes == splashClipAllInside); | |
471 | x2 = x3; | |
472 | } | |
473 | drawSpan(x2, x2 <= x1 ? x1 : x2, y1, state->strokePattern, | |
474 | state->strokeAlpha, clipRes == splashClipAllInside); | |
475 | } else { | |
476 | x2 = x0; | |
477 | x3 = splashFloor(seg->x0 + ((SplashCoord)y0 + 1 - seg->y0) * dxdy); | |
478 | drawSpan((x3 + 1 <= x2) ? x3 + 1 : x2, x2, y0, state->strokePattern, | |
479 | state->strokeAlpha, clipRes == splashClipAllInside); | |
480 | x2 = x3; | |
481 | for (y = y0 + 1; y <= y1 - 1; ++y) { | |
482 | x3 = splashFloor(seg->x0 + ((SplashCoord)y + 1 - seg->y0) * dxdy); | |
483 | drawSpan(x3 + 1, x2, y, state->strokePattern, | |
484 | state->strokeAlpha, clipRes == splashClipAllInside); | |
485 | x2 = x3; | |
486 | } | |
487 | drawSpan(x1, (x1 <= x2) ? x2 : x1, y1, state->strokePattern, | |
488 | state->strokeAlpha, clipRes == splashClipAllInside); | |
489 | } | |
490 | } | |
491 | ||
492 | // segment with |dy| > |dx| | |
493 | } else { | |
494 | dxdy = seg->dxdy; | |
495 | if (y0 > y1) { | |
496 | t = x0; x0 = x1; x1 = t; | |
497 | t = y0; y0 = y1; y1 = t; | |
498 | } | |
499 | if ((clipRes = state->clip->testRect(x0 <= x1 ? x0 : x1, y0, | |
500 | x0 <= x1 ? x1 : x0, y1)) | |
501 | != splashClipAllOutside) { | |
502 | drawPixel(x0, y0, state->strokePattern, state->strokeAlpha, | |
503 | clipRes == splashClipAllInside); | |
504 | for (y = y0 + 1; y <= y1 - 1; ++y) { | |
505 | x = splashFloor(seg->x0 + ((SplashCoord)y - seg->y0) * dxdy); | |
506 | drawPixel(x, y, state->strokePattern, state->strokeAlpha, | |
507 | clipRes == splashClipAllInside); | |
508 | } | |
509 | drawPixel(x1, y1, state->strokePattern, state->strokeAlpha, | |
510 | clipRes == splashClipAllInside); | |
511 | } | |
512 | } | |
513 | ++nClipRes[clipRes]; | |
514 | } | |
515 | if (nClipRes[splashClipPartial] || | |
516 | (nClipRes[splashClipAllInside] && nClipRes[splashClipAllOutside])) { | |
517 | opClipRes = splashClipPartial; | |
518 | } else if (nClipRes[splashClipAllInside]) { | |
519 | opClipRes = splashClipAllInside; | |
520 | } else { | |
521 | opClipRes = splashClipAllOutside; | |
522 | } | |
523 | } | |
524 | ||
525 | void Splash::strokeWide(SplashXPath *xPath) { | |
526 | SplashXPathSeg *seg, *seg2; | |
527 | SplashPath *widePath; | |
528 | SplashCoord d, dx, dy, wdx, wdy, dxPrev, dyPrev, wdxPrev, wdyPrev; | |
529 | SplashCoord dotprod, miter; | |
530 | int i, j; | |
531 | ||
532 | dx = dy = wdx = wdy = 0; // make gcc happy | |
533 | dxPrev = dyPrev = wdxPrev = wdyPrev = 0; // make gcc happy | |
534 | ||
535 | for (i = 0, seg = xPath->segs; i < xPath->length; ++i, ++seg) { | |
536 | ||
537 | // save the deltas for the previous segment; if this is the first | |
538 | // segment on a subpath, compute the deltas for the last segment | |
539 | // on the subpath (which may be used to draw a line join) | |
540 | if (seg->flags & splashXPathFirst) { | |
541 | for (j = i + 1, seg2 = &xPath->segs[j]; j < xPath->length; ++j, ++seg2) { | |
542 | if (seg2->flags & splashXPathLast) { | |
543 | d = splashDist(seg2->x0, seg2->y0, seg2->x1, seg2->y1); | |
544 | if (d == 0) { | |
545 | //~ not clear what the behavior should be for joins with d==0 | |
546 | dxPrev = 0; | |
547 | dyPrev = 1; | |
548 | } else { | |
549 | d = (SplashCoord)1 / d; | |
550 | dxPrev = d * (seg2->x1 - seg2->x0); | |
551 | dyPrev = d * (seg2->y1 - seg2->y0); | |
552 | } | |
553 | wdxPrev = (SplashCoord)0.5 * state->lineWidth * dxPrev; | |
554 | wdyPrev = (SplashCoord)0.5 * state->lineWidth * dyPrev; | |
555 | break; | |
556 | } | |
557 | } | |
558 | } else { | |
559 | dxPrev = dx; | |
560 | dyPrev = dy; | |
561 | wdxPrev = wdx; | |
562 | wdyPrev = wdy; | |
563 | } | |
564 | ||
565 | // compute deltas for this line segment | |
566 | d = splashDist(seg->x0, seg->y0, seg->x1, seg->y1); | |
567 | if (d == 0) { | |
568 | // we need to draw end caps on zero-length lines | |
569 | //~ not clear what the behavior should be for splashLineCapButt with d==0 | |
570 | dx = 0; | |
571 | dy = 1; | |
572 | } else { | |
573 | d = (SplashCoord)1 / d; | |
574 | dx = d * (seg->x1 - seg->x0); | |
575 | dy = d * (seg->y1 - seg->y0); | |
576 | } | |
577 | wdx = (SplashCoord)0.5 * state->lineWidth * dx; | |
578 | wdy = (SplashCoord)0.5 * state->lineWidth * dy; | |
579 | ||
580 | // initialize the path (which will be filled) | |
581 | widePath = new SplashPath(); | |
582 | widePath->moveTo(seg->x0 - wdy, seg->y0 + wdx); | |
583 | ||
584 | // draw the start cap | |
585 | if (seg->flags & splashXPathEnd0) { | |
586 | switch (state->lineCap) { | |
587 | case splashLineCapButt: | |
588 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
589 | break; | |
590 | case splashLineCapRound: | |
591 | widePath->arcCWTo(seg->x0 + wdy, seg->y0 - wdx, seg->x0, seg->y0); | |
592 | break; | |
593 | case splashLineCapProjecting: | |
594 | widePath->lineTo(seg->x0 - wdx - wdy, seg->y0 + wdx - wdy); | |
595 | widePath->lineTo(seg->x0 - wdx + wdy, seg->y0 - wdx - wdy); | |
596 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
597 | break; | |
598 | } | |
599 | } else { | |
600 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
601 | } | |
602 | ||
603 | // draw the left side of the segment | |
604 | widePath->lineTo(seg->x1 + wdy, seg->y1 - wdx); | |
605 | ||
606 | // draw the end cap | |
607 | if (seg->flags & splashXPathEnd1) { | |
608 | switch (state->lineCap) { | |
609 | case splashLineCapButt: | |
610 | widePath->lineTo(seg->x1 - wdy, seg->y1 + wdx); | |
611 | break; | |
612 | case splashLineCapRound: | |
613 | widePath->arcCWTo(seg->x1 - wdy, seg->y1 + wdx, seg->x1, seg->y1); | |
614 | break; | |
615 | case splashLineCapProjecting: | |
616 | widePath->lineTo(seg->x1 + wdx + wdy, seg->y1 - wdx + wdy); | |
617 | widePath->lineTo(seg->x1 + wdx - wdy, seg->y1 + wdx + wdy); | |
618 | widePath->lineTo(seg->x1 - wdy, seg->y1 + wdx); | |
619 | break; | |
620 | } | |
621 | } else { | |
622 | widePath->lineTo(seg->x1 - wdy, seg->y1 + wdx); | |
623 | } | |
624 | ||
625 | // draw the right side of the segment | |
626 | widePath->lineTo(seg->x0 - wdy, seg->y0 + wdx); | |
627 | ||
628 | // fill the segment | |
629 | fillWithPattern(widePath, gTrue, state->strokePattern, state->strokeAlpha); | |
630 | delete widePath; | |
631 | ||
632 | // draw the line join | |
633 | if (!(seg->flags & splashXPathEnd0)) { | |
634 | widePath = NULL; | |
635 | switch (state->lineJoin) { | |
636 | case splashLineJoinMiter: | |
637 | dotprod = -(dx * dxPrev + dy * dyPrev); | |
638 | if (splashAbs(splashAbs(dotprod) - 1) > 0.01) { | |
639 | widePath = new SplashPath(); | |
640 | widePath->moveTo(seg->x0, seg->y0); | |
641 | miter = (SplashCoord)2 / ((SplashCoord)1 - dotprod); | |
642 | if (splashSqrt(miter) <= state->miterLimit) { | |
643 | miter = splashSqrt(miter - 1); | |
644 | if (dy * dxPrev > dx * dyPrev) { | |
645 | widePath->lineTo(seg->x0 + wdyPrev, seg->y0 - wdxPrev); | |
646 | widePath->lineTo(seg->x0 + wdy - miter * wdx, | |
647 | seg->y0 - wdx - miter * wdy); | |
648 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
649 | } else { | |
650 | widePath->lineTo(seg->x0 - wdyPrev, seg->y0 + wdxPrev); | |
651 | widePath->lineTo(seg->x0 - wdy - miter * wdx, | |
652 | seg->y0 + wdx - miter * wdy); | |
653 | widePath->lineTo(seg->x0 - wdy, seg->y0 + wdx); | |
654 | } | |
655 | } else { | |
656 | if (dy * dxPrev > dx * dyPrev) { | |
657 | widePath->lineTo(seg->x0 + wdyPrev, seg->y0 - wdxPrev); | |
658 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
659 | } else { | |
660 | widePath->lineTo(seg->x0 - wdyPrev, seg->y0 + wdxPrev); | |
661 | widePath->lineTo(seg->x0 - wdy, seg->y0 + wdx); | |
662 | } | |
663 | } | |
664 | } | |
665 | break; | |
666 | case splashLineJoinRound: | |
667 | widePath = new SplashPath(); | |
668 | widePath->moveTo(seg->x0 + wdy, seg->y0 - wdx); | |
669 | widePath->arcCWTo(seg->x0 + wdy, seg->y0 - wdx, seg->x0, seg->y0); | |
670 | break; | |
671 | case splashLineJoinBevel: | |
672 | widePath = new SplashPath(); | |
673 | widePath->moveTo(seg->x0, seg->y0); | |
674 | if (dy * dxPrev > dx * dyPrev) { | |
675 | widePath->lineTo(seg->x0 + wdyPrev, seg->y0 - wdxPrev); | |
676 | widePath->lineTo(seg->x0 + wdy, seg->y0 - wdx); | |
677 | } else { | |
678 | widePath->lineTo(seg->x0 - wdyPrev, seg->y0 + wdxPrev); | |
679 | widePath->lineTo(seg->x0 - wdy, seg->y0 + wdx); | |
680 | } | |
681 | break; | |
682 | } | |
683 | if (widePath) { | |
684 | fillWithPattern(widePath, gTrue, state->strokePattern, | |
685 | state->strokeAlpha); | |
686 | delete widePath; | |
687 | } | |
688 | } | |
689 | } | |
690 | } | |
691 | ||
692 | SplashXPath *Splash::makeDashedPath(SplashXPath *xPath) { | |
693 | SplashXPath *dPath; | |
694 | GBool lineDashStartOn, lineDashOn; | |
695 | GBool atSegStart, atSegEnd, atDashStart, atDashEnd; | |
696 | int lineDashStartIdx, lineDashIdx, subpathStart; | |
697 | SplashCoord lineDashTotal, lineDashStartPhase, lineDashDist; | |
698 | int segIdx; | |
699 | SplashXPathSeg *seg; | |
700 | SplashCoord sx0, sy0, sx1, sy1, ax0, ay0, ax1, ay1, dist; | |
701 | int i; | |
702 | ||
703 | dPath = new SplashXPath(); | |
704 | ||
705 | lineDashTotal = 0; | |
706 | for (i = 0; i < state->lineDashLength; ++i) { | |
707 | lineDashTotal += state->lineDash[i]; | |
708 | } | |
709 | lineDashStartPhase = state->lineDashPhase; | |
710 | i = splashFloor(lineDashStartPhase / lineDashTotal); | |
711 | lineDashStartPhase -= (SplashCoord)i * lineDashTotal; | |
712 | lineDashStartOn = gTrue; | |
713 | lineDashStartIdx = 0; | |
714 | while (lineDashStartPhase >= state->lineDash[lineDashStartIdx]) { | |
715 | lineDashStartOn = !lineDashStartOn; | |
716 | lineDashStartPhase -= state->lineDash[lineDashStartIdx]; | |
717 | ++lineDashStartIdx; | |
718 | } | |
719 | ||
720 | segIdx = 0; | |
721 | seg = xPath->segs; | |
722 | sx0 = seg->x0; | |
723 | sy0 = seg->y0; | |
724 | sx1 = seg->x1; | |
725 | sy1 = seg->y1; | |
726 | dist = splashDist(sx0, sy0, sx1, sy1); | |
727 | lineDashOn = lineDashStartOn; | |
728 | lineDashIdx = lineDashStartIdx; | |
729 | lineDashDist = state->lineDash[lineDashIdx] - lineDashStartPhase; | |
730 | atSegStart = gTrue; | |
731 | atDashStart = gTrue; | |
732 | subpathStart = dPath->length; | |
733 | ||
734 | while (segIdx < xPath->length) { | |
735 | ||
736 | ax0 = sx0; | |
737 | ay0 = sy0; | |
738 | if (dist <= lineDashDist) { | |
739 | ax1 = sx1; | |
740 | ay1 = sy1; | |
741 | lineDashDist -= dist; | |
742 | dist = 0; | |
743 | atSegEnd = gTrue; | |
744 | atDashEnd = lineDashDist == 0 || (seg->flags & splashXPathLast); | |
745 | } else { | |
746 | ax1 = sx0 + (lineDashDist / dist) * (sx1 - sx0); | |
747 | ay1 = sy0 + (lineDashDist / dist) * (sy1 - sy0); | |
748 | sx0 = ax1; | |
749 | sy0 = ay1; | |
750 | dist -= lineDashDist; | |
751 | lineDashDist = 0; | |
752 | atSegEnd = gFalse; | |
753 | atDashEnd = gTrue; | |
754 | } | |
755 | ||
756 | if (lineDashOn) { | |
757 | dPath->addSegment(ax0, ay0, ax1, ay1, | |
758 | atDashStart, atDashEnd, | |
759 | atDashStart, atDashEnd); | |
760 | // end of closed subpath | |
761 | if (atSegEnd && | |
762 | (seg->flags & splashXPathLast) && | |
763 | !(seg->flags & splashXPathEnd1)) { | |
764 | dPath->segs[subpathStart].flags &= ~splashXPathEnd0; | |
765 | dPath->segs[dPath->length - 1].flags &= ~splashXPathEnd1; | |
766 | } | |
767 | } | |
768 | ||
769 | if (atDashEnd) { | |
770 | lineDashOn = !lineDashOn; | |
771 | if (++lineDashIdx == state->lineDashLength) { | |
772 | lineDashIdx = 0; | |
773 | } | |
774 | lineDashDist = state->lineDash[lineDashIdx]; | |
775 | atDashStart = gTrue; | |
776 | } else { | |
777 | atDashStart = gFalse; | |
778 | } | |
779 | if (atSegEnd) { | |
780 | if (++segIdx < xPath->length) { | |
781 | ++seg; | |
782 | sx0 = seg->x0; | |
783 | sy0 = seg->y0; | |
784 | sx1 = seg->x1; | |
785 | sy1 = seg->y1; | |
786 | dist = splashDist(sx0, sy0, sx1, sy1); | |
787 | if (seg->flags & splashXPathFirst) { | |
788 | lineDashOn = lineDashStartOn; | |
789 | lineDashIdx = lineDashStartIdx; | |
790 | lineDashDist = state->lineDash[lineDashIdx] - lineDashStartPhase; | |
791 | atDashStart = gTrue; | |
792 | subpathStart = dPath->length; | |
793 | } | |
794 | } | |
795 | atSegStart = gTrue; | |
796 | } else { | |
797 | atSegStart = gFalse; | |
798 | } | |
799 | } | |
800 | ||
801 | return dPath; | |
802 | } | |
803 | ||
804 | SplashError Splash::fill(SplashPath *path, GBool eo) { | |
805 | if (debugMode) { | |
806 | printf("fill [eo:%d]:\n", eo); | |
807 | dumpPath(path); | |
808 | } | |
809 | return fillWithPattern(path, eo, state->fillPattern, state->fillAlpha); | |
810 | } | |
811 | ||
812 | SplashError Splash::fillWithPattern(SplashPath *path, GBool eo, | |
813 | SplashPattern *pattern, | |
814 | SplashCoord alpha) { | |
815 | SplashXPath *xPath; | |
816 | SplashXPathScanner *scanner; | |
817 | int xMinI, yMinI, xMaxI, yMaxI, x0, x1, y; | |
818 | SplashClipResult clipRes, clipRes2; | |
819 | ||
820 | if (path->length == 0) { | |
821 | return splashErrEmptyPath; | |
822 | } | |
823 | xPath = new SplashXPath(path, state->flatness, gTrue); | |
824 | xPath->sort(); | |
825 | scanner = new SplashXPathScanner(xPath, eo); | |
826 | ||
827 | // get the min and max x and y values | |
828 | scanner->getBBox(&xMinI, &yMinI, &xMaxI, &yMaxI); | |
829 | ||
830 | // check clipping | |
831 | if ((clipRes = state->clip->testRect(xMinI, yMinI, xMaxI, yMaxI)) | |
832 | != splashClipAllOutside) { | |
833 | ||
834 | // limit the y range | |
835 | if (yMinI < state->clip->getYMin()) { | |
836 | yMinI = state->clip->getYMin(); | |
837 | } | |
838 | if (yMaxI > state->clip->getYMax()) { | |
839 | yMaxI = state->clip->getYMax(); | |
840 | } | |
841 | ||
842 | // draw the spans | |
843 | for (y = yMinI; y <= yMaxI; ++y) { | |
844 | while (scanner->getNextSpan(y, &x0, &x1)) { | |
845 | if (clipRes == splashClipAllInside) { | |
846 | drawSpan(x0, x1, y, pattern, alpha, gTrue); | |
847 | } else { | |
848 | // limit the x range | |
849 | if (x0 < state->clip->getXMin()) { | |
850 | x0 = state->clip->getXMin(); | |
851 | } | |
852 | if (x1 > state->clip->getXMax()) { | |
853 | x1 = state->clip->getXMax(); | |
854 | } | |
855 | clipRes2 = state->clip->testSpan(x0, x1, y); | |
856 | drawSpan(x0, x1, y, pattern, alpha, clipRes2 == splashClipAllInside); | |
857 | } | |
858 | } | |
859 | } | |
860 | } | |
861 | opClipRes = clipRes; | |
862 | ||
863 | delete scanner; | |
864 | delete xPath; | |
865 | return splashOk; | |
866 | } | |
867 | ||
868 | SplashError Splash::xorFill(SplashPath *path, GBool eo) { | |
869 | SplashXPath *xPath; | |
870 | SplashXPathScanner *scanner; | |
871 | int xMinI, yMinI, xMaxI, yMaxI, x0, x1, y; | |
872 | SplashClipResult clipRes, clipRes2; | |
873 | ||
874 | if (path->length == 0) { | |
875 | return splashErrEmptyPath; | |
876 | } | |
877 | xPath = new SplashXPath(path, state->flatness, gTrue); | |
878 | xPath->sort(); | |
879 | scanner = new SplashXPathScanner(xPath, eo); | |
880 | ||
881 | // get the min and max x and y values | |
882 | scanner->getBBox(&xMinI, &yMinI, &xMaxI, &yMaxI); | |
883 | ||
884 | // check clipping | |
885 | if ((clipRes = state->clip->testRect(xMinI, yMinI, xMaxI, yMaxI)) | |
886 | != splashClipAllOutside) { | |
887 | ||
888 | // limit the y range | |
889 | if (yMinI < state->clip->getYMin()) { | |
890 | yMinI = state->clip->getYMin(); | |
891 | } | |
892 | if (yMaxI > state->clip->getYMax()) { | |
893 | yMaxI = state->clip->getYMax(); | |
894 | } | |
895 | ||
896 | // draw the spans | |
897 | for (y = yMinI; y <= yMaxI; ++y) { | |
898 | while (scanner->getNextSpan(y, &x0, &x1)) { | |
899 | if (clipRes == splashClipAllInside) { | |
900 | xorSpan(x0, x1, y, state->fillPattern, gTrue); | |
901 | } else { | |
902 | // limit the x range | |
903 | if (x0 < state->clip->getXMin()) { | |
904 | x0 = state->clip->getXMin(); | |
905 | } | |
906 | if (x1 > state->clip->getXMax()) { | |
907 | x1 = state->clip->getXMax(); | |
908 | } | |
909 | clipRes2 = state->clip->testSpan(x0, x1, y); | |
910 | xorSpan(x0, x1, y, state->fillPattern, | |
911 | clipRes2 == splashClipAllInside); | |
912 | } | |
913 | } | |
914 | } | |
915 | } | |
916 | opClipRes = clipRes; | |
917 | ||
918 | delete scanner; | |
919 | delete xPath; | |
920 | return splashOk; | |
921 | } | |
922 | ||
923 | void Splash::drawPixel(int x, int y, SplashColorPtr color, | |
924 | SplashCoord alpha, GBool noClip) { | |
925 | SplashBlendFunc blendFunc; | |
926 | SplashColorPtr p; | |
927 | SplashColor dest, blend; | |
928 | int alpha2, ialpha2; | |
929 | Guchar t; | |
930 | ||
931 | if (noClip || state->clip->test(x, y)) { | |
932 | if (alpha != 1 || softMask || state->blendFunc) { | |
933 | blendFunc = state->blendFunc ? state->blendFunc : &blendNormal; | |
934 | if (softMask) { | |
935 | alpha2 = (int)(alpha * softMask->data[y * softMask->rowSize + x]); | |
936 | } else { | |
937 | alpha2 = (int)(alpha * 255); | |
938 | } | |
939 | ialpha2 = 255 - alpha2; | |
940 | switch (bitmap->mode) { | |
941 | case splashModeMono1: | |
942 | p = &bitmap->data[y * bitmap->rowSize + (x >> 3)]; | |
943 | dest[0] = (*p >> (7 - (x & 7))) & 1; | |
944 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
945 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
946 | if (t) { | |
947 | *p |= 0x80 >> (x & 7); | |
948 | } else { | |
949 | *p &= ~(0x80 >> (x & 7)); | |
950 | } | |
951 | break; | |
952 | case splashModeMono8: | |
953 | p = &bitmap->data[y * bitmap->rowSize + x]; | |
954 | (*blendFunc)(color, p, blend, bitmap->mode); | |
955 | // note: floor(x / 255) = x >> 8 (for 16-bit x) | |
956 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
957 | break; | |
958 | case splashModeAMono8: | |
959 | p = &bitmap->data[y * bitmap->rowSize + 2 * x]; | |
960 | (*blendFunc)(color, p, blend, bitmap->mode); | |
961 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
962 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
963 | break; | |
964 | case splashModeRGB8: | |
965 | case splashModeBGR8: | |
966 | p = &bitmap->data[y * bitmap->rowSize + 3 * x]; | |
967 | (*blendFunc)(color, p, blend, bitmap->mode); | |
968 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
969 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
970 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
971 | break; | |
972 | case splashModeARGB8: | |
973 | case splashModeBGRA8: | |
974 | #if SPLASH_CMYK | |
975 | case splashModeCMYK8: | |
976 | #endif | |
977 | p = &bitmap->data[y * bitmap->rowSize + 4 * x]; | |
978 | (*blendFunc)(color, p, blend, bitmap->mode); | |
979 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
980 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
981 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
982 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
983 | break; | |
984 | #if SPLASH_CMYK | |
985 | case splashModeACMYK8: | |
986 | p = &bitmap->data[y * bitmap->rowSize + 5 * x]; | |
987 | (*blendFunc)(color, p, blend, bitmap->mode); | |
988 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
989 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
990 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
991 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
992 | p[4] = (alpha2 * blend[4] + ialpha2 * p[4]) >> 8; | |
993 | break; | |
994 | #endif | |
995 | } | |
996 | } else { | |
997 | switch (bitmap->mode) { | |
998 | case splashModeMono1: | |
999 | p = &bitmap->data[y * bitmap->rowSize + (x >> 3)]; | |
1000 | if (color[0]) { | |
1001 | *p |= 0x80 >> (x & 7); | |
1002 | } else { | |
1003 | *p &= ~(0x80 >> (x & 7)); | |
1004 | } | |
1005 | break; | |
1006 | case splashModeMono8: | |
1007 | p = &bitmap->data[y * bitmap->rowSize + x]; | |
1008 | p[0] = color[0]; | |
1009 | break; | |
1010 | case splashModeAMono8: | |
1011 | p = &bitmap->data[y * bitmap->rowSize + 2 * x]; | |
1012 | p[0] = color[0]; | |
1013 | p[1] = color[1]; | |
1014 | break; | |
1015 | case splashModeRGB8: | |
1016 | case splashModeBGR8: | |
1017 | p = &bitmap->data[y * bitmap->rowSize + 3 * x]; | |
1018 | p[0] = color[0]; | |
1019 | p[1] = color[1]; | |
1020 | p[2] = color[2]; | |
1021 | break; | |
1022 | case splashModeARGB8: | |
1023 | case splashModeBGRA8: | |
1024 | #if SPLASH_CMYK | |
1025 | case splashModeCMYK8: | |
1026 | #endif | |
1027 | p = &bitmap->data[y * bitmap->rowSize + 4 * x]; | |
1028 | p[0] = color[0]; | |
1029 | p[1] = color[1]; | |
1030 | p[2] = color[2]; | |
1031 | p[3] = color[3]; | |
1032 | break; | |
1033 | #if SPLASH_CMYK | |
1034 | case splashModeACMYK8: | |
1035 | p = &bitmap->data[y * bitmap->rowSize + 5 * x]; | |
1036 | p[0] = color[0]; | |
1037 | p[1] = color[1]; | |
1038 | p[2] = color[2]; | |
1039 | p[3] = color[3]; | |
1040 | p[4] = color[4]; | |
1041 | break; | |
1042 | #endif | |
1043 | } | |
1044 | } | |
1045 | updateModX(x); | |
1046 | updateModY(y); | |
1047 | } | |
1048 | } | |
1049 | ||
1050 | void Splash::drawPixel(int x, int y, SplashPattern *pattern, | |
1051 | SplashCoord alpha, GBool noClip) { | |
1052 | SplashBlendFunc blendFunc; | |
1053 | SplashColor color; | |
1054 | SplashColorPtr p; | |
1055 | SplashColor dest, blend; | |
1056 | int alpha2, ialpha2; | |
1057 | Guchar t; | |
1058 | ||
1059 | if (noClip || state->clip->test(x, y)) { | |
1060 | if (alpha != 1 || softMask || state->blendFunc) { | |
1061 | blendFunc = state->blendFunc ? state->blendFunc : &blendNormal; | |
1062 | pattern->getColor(x, y, color); | |
1063 | if (softMask) { | |
1064 | alpha2 = (int)(alpha * softMask->data[y * softMask->rowSize + x]); | |
1065 | } else { | |
1066 | alpha2 = (int)(alpha * 255); | |
1067 | } | |
1068 | ialpha2 = 255 - alpha2; | |
1069 | switch (bitmap->mode) { | |
1070 | case splashModeMono1: | |
1071 | p = &bitmap->data[y * bitmap->rowSize + (x >> 3)]; | |
1072 | dest[0] = (*p >> (7 - (x & 7))) & 1; | |
1073 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
1074 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
1075 | if (t) { | |
1076 | *p |= 0x80 >> (x & 7); | |
1077 | } else { | |
1078 | *p &= ~(0x80 >> (x & 7)); | |
1079 | } | |
1080 | break; | |
1081 | case splashModeMono8: | |
1082 | p = &bitmap->data[y * bitmap->rowSize + x]; | |
1083 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1084 | // note: floor(x / 255) = x >> 8 (for 16-bit x) | |
1085 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1086 | break; | |
1087 | case splashModeAMono8: | |
1088 | p = &bitmap->data[y * bitmap->rowSize + 2 * x]; | |
1089 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1090 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1091 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1092 | break; | |
1093 | case splashModeRGB8: | |
1094 | case splashModeBGR8: | |
1095 | p = &bitmap->data[y * bitmap->rowSize + 3 * x]; | |
1096 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1097 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1098 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1099 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1100 | break; | |
1101 | case splashModeARGB8: | |
1102 | case splashModeBGRA8: | |
1103 | #if SPLASH_CMYK | |
1104 | case splashModeCMYK8: | |
1105 | #endif | |
1106 | p = &bitmap->data[y * bitmap->rowSize + 4 * x]; | |
1107 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1108 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1109 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1110 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1111 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1112 | break; | |
1113 | #if SPLASH_CMYK | |
1114 | case splashModeACMYK8: | |
1115 | p = &bitmap->data[y * bitmap->rowSize + 5 * x]; | |
1116 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1117 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1118 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1119 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1120 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1121 | p[4] = (alpha2 * blend[4] + ialpha2 * p[4]) >> 8; | |
1122 | break; | |
1123 | #endif | |
1124 | } | |
1125 | } else { | |
1126 | pattern->getColor(x, y, color); | |
1127 | switch (bitmap->mode) { | |
1128 | case splashModeMono1: | |
1129 | p = &bitmap->data[y * bitmap->rowSize + (x >> 3)]; | |
1130 | if (color[0]) { | |
1131 | *p |= 0x80 >> (x & 7); | |
1132 | } else { | |
1133 | *p &= ~(0x80 >> (x & 7)); | |
1134 | } | |
1135 | break; | |
1136 | case splashModeMono8: | |
1137 | p = &bitmap->data[y * bitmap->rowSize + x]; | |
1138 | p[0] = color[0]; | |
1139 | break; | |
1140 | case splashModeAMono8: | |
1141 | p = &bitmap->data[y * bitmap->rowSize + 2 * x]; | |
1142 | p[0] = color[0]; | |
1143 | p[1] = color[1]; | |
1144 | break; | |
1145 | case splashModeRGB8: | |
1146 | case splashModeBGR8: | |
1147 | p = &bitmap->data[y * bitmap->rowSize + 3 * x]; | |
1148 | p[0] = color[0]; | |
1149 | p[1] = color[1]; | |
1150 | p[2] = color[2]; | |
1151 | break; | |
1152 | case splashModeARGB8: | |
1153 | case splashModeBGRA8: | |
1154 | #if SPLASH_CMYK | |
1155 | case splashModeCMYK8: | |
1156 | #endif | |
1157 | p = &bitmap->data[y * bitmap->rowSize + 4 * x]; | |
1158 | p[0] = color[0]; | |
1159 | p[1] = color[1]; | |
1160 | p[2] = color[2]; | |
1161 | p[3] = color[3]; | |
1162 | break; | |
1163 | #if SPLASH_CMYK | |
1164 | case splashModeACMYK8: | |
1165 | p = &bitmap->data[y * bitmap->rowSize + 5 * x]; | |
1166 | p[0] = color[0]; | |
1167 | p[1] = color[1]; | |
1168 | p[2] = color[2]; | |
1169 | p[3] = color[3]; | |
1170 | p[4] = color[4]; | |
1171 | break; | |
1172 | #endif | |
1173 | } | |
1174 | } | |
1175 | updateModX(x); | |
1176 | updateModY(y); | |
1177 | } | |
1178 | } | |
1179 | ||
1180 | void Splash::drawSpan(int x0, int x1, int y, SplashPattern *pattern, | |
1181 | SplashCoord alpha, GBool noClip) { | |
1182 | SplashBlendFunc blendFunc; | |
1183 | SplashColor color; | |
1184 | SplashColorPtr p; | |
1185 | SplashColor dest, blend; | |
1186 | Guchar mask, t; | |
1187 | int alpha2, ialpha2; | |
1188 | int i, j, n; | |
1189 | ||
1190 | n = x1 - x0 + 1; | |
1191 | ||
1192 | if (noClip) { | |
1193 | updateModX(x0); | |
1194 | updateModX(x1); | |
1195 | updateModY(y); | |
1196 | } | |
1197 | ||
1198 | if (alpha != 1 || softMask || state->blendFunc) { | |
1199 | blendFunc = state->blendFunc ? state->blendFunc : &blendNormal; | |
1200 | if (softMask) { | |
1201 | alpha2 = ialpha2 = 0; // make gcc happy | |
1202 | } else { | |
1203 | alpha2 = (int)(alpha * 255); | |
1204 | ialpha2 = 255 - alpha2; | |
1205 | } | |
1206 | switch (bitmap->mode) { | |
1207 | case splashModeMono1: | |
1208 | p = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; | |
1209 | i = 0; | |
1210 | if (pattern->isStatic()) { | |
1211 | pattern->getColor(0, 0, color); | |
1212 | if ((j = x0 & 7)) { | |
1213 | mask = 0x80 >> j; | |
1214 | for (; j < 8 && i < n; ++i, ++j) { | |
1215 | if (noClip || state->clip->test(x0 + i, y)) { | |
1216 | if (softMask) { | |
1217 | alpha2 = (int)(alpha * | |
1218 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1219 | ialpha2 = 255 - alpha2; | |
1220 | } | |
1221 | dest[0] = (*p >> (7 - j)) & 1; | |
1222 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
1223 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
1224 | if (t) { | |
1225 | *p |= mask; | |
1226 | } else { | |
1227 | *p &= ~mask; | |
1228 | } | |
1229 | if (!noClip) { | |
1230 | updateModX(x0 + i); | |
1231 | updateModY(y); | |
1232 | } | |
1233 | } | |
1234 | mask >>= 1; | |
1235 | } | |
1236 | ++p; | |
1237 | } | |
1238 | while (i < n) { | |
1239 | mask = 0x80; | |
1240 | for (j = 0; j < 8 && i < n; ++i, ++j) { | |
1241 | if (noClip || state->clip->test(x0 + i, y)) { | |
1242 | if (softMask) { | |
1243 | alpha2 = (int)(alpha * | |
1244 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1245 | ialpha2 = 255 - alpha2; | |
1246 | } | |
1247 | dest[0] = (*p >> (7 - j)) & 1; | |
1248 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
1249 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
1250 | if (t) { | |
1251 | *p |= mask; | |
1252 | } else { | |
1253 | *p &= ~mask; | |
1254 | } | |
1255 | if (!noClip) { | |
1256 | updateModX(x0 + i); | |
1257 | updateModY(y); | |
1258 | } | |
1259 | } | |
1260 | mask >>= 1; | |
1261 | } | |
1262 | ++p; | |
1263 | } | |
1264 | } else { | |
1265 | if ((j = x0 & 7)) { | |
1266 | mask = 0x80 >> j; | |
1267 | for (; j < 8 && i < n; ++i, ++j) { | |
1268 | if (noClip || state->clip->test(x0 + i, y)) { | |
1269 | pattern->getColor(x0 + i, y, color); | |
1270 | if (softMask) { | |
1271 | alpha2 = (int)(alpha * | |
1272 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1273 | ialpha2 = 255 - alpha2; | |
1274 | } | |
1275 | dest[0] = (*p >> (7 - j)) & 1; | |
1276 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
1277 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
1278 | if (t) { | |
1279 | *p |= mask; | |
1280 | } else { | |
1281 | *p &= ~mask; | |
1282 | } | |
1283 | if (!noClip) { | |
1284 | updateModX(x0 + i); | |
1285 | updateModY(y); | |
1286 | } | |
1287 | } | |
1288 | mask >>= 1; | |
1289 | } | |
1290 | ++p; | |
1291 | } | |
1292 | while (i < n) { | |
1293 | mask = 0x80; | |
1294 | for (j = 0; j < 8 && i < n; ++i, ++j) { | |
1295 | if (noClip || state->clip->test(x0 + i, y)) { | |
1296 | pattern->getColor(x0 + i, y, color); | |
1297 | if (softMask) { | |
1298 | alpha2 = (int)(alpha * | |
1299 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1300 | ialpha2 = 255 - alpha2; | |
1301 | } | |
1302 | dest[0] = (*p >> (7 - j)) & 1; | |
1303 | (*blendFunc)(color, dest, blend, bitmap->mode); | |
1304 | t = (alpha2 * blend[0] + ialpha2 * dest[0]) >> 8; | |
1305 | if (t) { | |
1306 | *p |= mask; | |
1307 | } else { | |
1308 | *p &= ~mask; | |
1309 | } | |
1310 | if (!noClip) { | |
1311 | updateModX(x0 + i); | |
1312 | updateModY(y); | |
1313 | } | |
1314 | } | |
1315 | mask >>= 1; | |
1316 | } | |
1317 | ++p; | |
1318 | } | |
1319 | } | |
1320 | break; | |
1321 | ||
1322 | case splashModeMono8: | |
1323 | p = &bitmap->data[y * bitmap->rowSize + x0]; | |
1324 | if (pattern->isStatic()) { | |
1325 | pattern->getColor(0, 0, color); | |
1326 | for (i = 0; i < n; ++i) { | |
1327 | if (noClip || state->clip->test(x0 + i, y)) { | |
1328 | if (softMask) { | |
1329 | alpha2 = (int)(alpha * | |
1330 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1331 | ialpha2 = 255 - alpha2; | |
1332 | } | |
1333 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1334 | *p = (alpha2 * blend[0] + ialpha2 * *p) >> 8; | |
1335 | if (!noClip) { | |
1336 | updateModX(x0 + i); | |
1337 | updateModY(y); | |
1338 | } | |
1339 | } | |
1340 | ++p; | |
1341 | } | |
1342 | } else { | |
1343 | for (i = 0; i < n; ++i) { | |
1344 | if (noClip || state->clip->test(x0 + i, y)) { | |
1345 | pattern->getColor(x0 + i, y, color); | |
1346 | if (softMask) { | |
1347 | alpha2 = (int)(alpha * | |
1348 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1349 | ialpha2 = 255 - alpha2; | |
1350 | } | |
1351 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1352 | *p = (alpha2 * blend[0] + ialpha2 * *p) >> 8; | |
1353 | if (!noClip) { | |
1354 | updateModX(x0 + i); | |
1355 | updateModY(y); | |
1356 | } | |
1357 | } | |
1358 | ++p; | |
1359 | } | |
1360 | } | |
1361 | break; | |
1362 | ||
1363 | case splashModeAMono8: | |
1364 | p = &bitmap->data[y * bitmap->rowSize + 2 * x0]; | |
1365 | if (pattern->isStatic()) { | |
1366 | pattern->getColor(0, 0, color); | |
1367 | for (i = 0; i < n; ++i) { | |
1368 | if (noClip || state->clip->test(x0 + i, y)) { | |
1369 | if (softMask) { | |
1370 | alpha2 = (int)(alpha * | |
1371 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1372 | ialpha2 = 255 - alpha2; | |
1373 | } | |
1374 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1375 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1376 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1377 | if (!noClip) { | |
1378 | updateModX(x0 + i); | |
1379 | updateModY(y); | |
1380 | } | |
1381 | } | |
1382 | p += 2; | |
1383 | } | |
1384 | } else { | |
1385 | for (i = 0; i < n; ++i) { | |
1386 | if (noClip || state->clip->test(x0 + i, y)) { | |
1387 | pattern->getColor(x0 + i, y, color); | |
1388 | if (softMask) { | |
1389 | alpha2 = (int)(alpha * | |
1390 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1391 | ialpha2 = 255 - alpha2; | |
1392 | } | |
1393 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1394 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1395 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1396 | if (!noClip) { | |
1397 | updateModX(x0 + i); | |
1398 | updateModY(y); | |
1399 | } | |
1400 | } | |
1401 | p += 2; | |
1402 | } | |
1403 | } | |
1404 | break; | |
1405 | ||
1406 | case splashModeRGB8: | |
1407 | case splashModeBGR8: | |
1408 | p = &bitmap->data[y * bitmap->rowSize + 3 * x0]; | |
1409 | if (pattern->isStatic()) { | |
1410 | pattern->getColor(0, 0, color); | |
1411 | for (i = 0; i < n; ++i) { | |
1412 | if (noClip || state->clip->test(x0 + i, y)) { | |
1413 | if (softMask) { | |
1414 | alpha2 = (int)(alpha * | |
1415 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1416 | ialpha2 = 255 - alpha2; | |
1417 | } | |
1418 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1419 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1420 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1421 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1422 | if (!noClip) { | |
1423 | updateModX(x0 + i); | |
1424 | updateModY(y); | |
1425 | } | |
1426 | } | |
1427 | p += 3; | |
1428 | } | |
1429 | } else { | |
1430 | for (i = 0; i < n; ++i) { | |
1431 | if (noClip || state->clip->test(x0 + i, y)) { | |
1432 | pattern->getColor(x0 + i, y, color); | |
1433 | if (softMask) { | |
1434 | alpha2 = (int)(alpha * | |
1435 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1436 | ialpha2 = 255 - alpha2; | |
1437 | } | |
1438 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1439 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1440 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1441 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1442 | if (!noClip) { | |
1443 | updateModX(x0 + i); | |
1444 | updateModY(y); | |
1445 | } | |
1446 | } | |
1447 | p += 3; | |
1448 | } | |
1449 | } | |
1450 | break; | |
1451 | ||
1452 | case splashModeARGB8: | |
1453 | case splashModeBGRA8: | |
1454 | #if SPLASH_CMYK | |
1455 | case splashModeCMYK8: | |
1456 | #endif | |
1457 | p = &bitmap->data[y * bitmap->rowSize + 4 * x0]; | |
1458 | if (pattern->isStatic()) { | |
1459 | pattern->getColor(0, 0, color); | |
1460 | for (i = 0; i < n; ++i) { | |
1461 | if (noClip || state->clip->test(x0 + i, y)) { | |
1462 | if (softMask) { | |
1463 | alpha2 = (int)(alpha * | |
1464 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1465 | ialpha2 = 255 - alpha2; | |
1466 | } | |
1467 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1468 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1469 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1470 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1471 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1472 | if (!noClip) { | |
1473 | updateModX(x0 + i); | |
1474 | updateModY(y); | |
1475 | } | |
1476 | } | |
1477 | p += 4; | |
1478 | } | |
1479 | } else { | |
1480 | for (i = 0; i < n; ++i) { | |
1481 | if (noClip || state->clip->test(x0 + i, y)) { | |
1482 | pattern->getColor(x0 + i, y, color); | |
1483 | if (softMask) { | |
1484 | alpha2 = (int)(alpha * | |
1485 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1486 | ialpha2 = 255 - alpha2; | |
1487 | } | |
1488 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1489 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1490 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1491 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1492 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1493 | if (!noClip) { | |
1494 | updateModX(x0 + i); | |
1495 | updateModY(y); | |
1496 | } | |
1497 | } | |
1498 | p += 4; | |
1499 | } | |
1500 | } | |
1501 | break; | |
1502 | #if SPLASH_CMYK | |
1503 | case splashModeACMYK8: | |
1504 | p = &bitmap->data[y * bitmap->rowSize + 5 * x0]; | |
1505 | if (pattern->isStatic()) { | |
1506 | pattern->getColor(0, 0, color); | |
1507 | for (i = 0; i < n; ++i) { | |
1508 | if (noClip || state->clip->test(x0 + i, y)) { | |
1509 | if (softMask) { | |
1510 | alpha2 = (int)(alpha * | |
1511 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1512 | ialpha2 = 255 - alpha2; | |
1513 | } | |
1514 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1515 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1516 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1517 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1518 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1519 | p[4] = (alpha2 * blend[4] + ialpha2 * p[4]) >> 8; | |
1520 | if (!noClip) { | |
1521 | updateModX(x0 + i); | |
1522 | updateModY(y); | |
1523 | } | |
1524 | } | |
1525 | p += 4; | |
1526 | } | |
1527 | } else { | |
1528 | for (i = 0; i < n; ++i) { | |
1529 | if (noClip || state->clip->test(x0 + i, y)) { | |
1530 | pattern->getColor(x0 + i, y, color); | |
1531 | if (softMask) { | |
1532 | alpha2 = (int)(alpha * | |
1533 | softMask->data[y * softMask->rowSize + x0 + i]); | |
1534 | ialpha2 = 255 - alpha2; | |
1535 | } | |
1536 | (*blendFunc)(color, p, blend, bitmap->mode); | |
1537 | p[0] = (alpha2 * blend[0] + ialpha2 * p[0]) >> 8; | |
1538 | p[1] = (alpha2 * blend[1] + ialpha2 * p[1]) >> 8; | |
1539 | p[2] = (alpha2 * blend[2] + ialpha2 * p[2]) >> 8; | |
1540 | p[3] = (alpha2 * blend[3] + ialpha2 * p[3]) >> 8; | |
1541 | p[4] = (alpha2 * blend[4] + ialpha2 * p[4]) >> 8; | |
1542 | if (!noClip) { | |
1543 | updateModX(x0 + i); | |
1544 | updateModY(y); | |
1545 | } | |
1546 | } | |
1547 | p += 4; | |
1548 | } | |
1549 | } | |
1550 | break; | |
1551 | #endif | |
1552 | } | |
1553 | ||
1554 | } else { | |
1555 | switch (bitmap->mode) { | |
1556 | case splashModeMono1: | |
1557 | p = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; | |
1558 | i = 0; | |
1559 | if (pattern->isStatic()) { | |
1560 | pattern->getColor(0, 0, color); | |
1561 | if ((j = x0 & 7)) { | |
1562 | mask = 0x80 >> j; | |
1563 | for (; j < 8 && i < n; ++i, ++j) { | |
1564 | if (noClip || state->clip->test(x0 + i, y)) { | |
1565 | if (color[0]) { | |
1566 | *p |= mask; | |
1567 | } else { | |
1568 | *p &= ~mask; | |
1569 | } | |
1570 | if (!noClip) { | |
1571 | updateModX(x0 + i); | |
1572 | updateModY(y); | |
1573 | } | |
1574 | } | |
1575 | mask >>= 1; | |
1576 | } | |
1577 | ++p; | |
1578 | } | |
1579 | while (i < n) { | |
1580 | mask = 0x80; | |
1581 | for (j = 0; j < 8 && i < n; ++i, ++j) { | |
1582 | if (noClip || state->clip->test(x0 + i, y)) { | |
1583 | if (color[0]) { | |
1584 | *p |= mask; | |
1585 | } else { | |
1586 | *p &= ~mask; | |
1587 | } | |
1588 | if (!noClip) { | |
1589 | updateModX(x0 + i); | |
1590 | updateModY(y); | |
1591 | } | |
1592 | } | |
1593 | mask >>= 1; | |
1594 | } | |
1595 | ++p; | |
1596 | } | |
1597 | } else { | |
1598 | if ((j = x0 & 7)) { | |
1599 | mask = 0x80 >> j; | |
1600 | for (; j < 8 && i < n; ++i, ++j) { | |
1601 | if (noClip || state->clip->test(x0 + i, y)) { | |
1602 | pattern->getColor(x0 + i, y, color); | |
1603 | if (color[0]) { | |
1604 | *p |= mask; | |
1605 | } else { | |
1606 | *p &= ~mask; | |
1607 | } | |
1608 | if (!noClip) { | |
1609 | updateModX(x0 + i); | |
1610 | updateModY(y); | |
1611 | } | |
1612 | } | |
1613 | mask >>= 1; | |
1614 | } | |
1615 | ++p; | |
1616 | } | |
1617 | while (i < n) { | |
1618 | mask = 0x80; | |
1619 | for (j = 0; j < 8 && i < n; ++i, ++j) { | |
1620 | if (noClip || state->clip->test(x0 + i, y)) { | |
1621 | pattern->getColor(x0 + i, y, color); | |
1622 | if (color[0]) { | |
1623 | *p |= mask; | |
1624 | } else { | |
1625 | *p &= ~mask; | |
1626 | } | |
1627 | if (!noClip) { | |
1628 | updateModX(x0 + i); | |
1629 | updateModY(y); | |
1630 | } | |
1631 | } | |
1632 | mask >>= 1; | |
1633 | } | |
1634 | ++p; | |
1635 | } | |
1636 | } | |
1637 | break; | |
1638 | ||
1639 | case splashModeMono8: | |
1640 | p = &bitmap->data[y * bitmap->rowSize + x0]; | |
1641 | if (pattern->isStatic()) { | |
1642 | pattern->getColor(0, 0, color); | |
1643 | for (i = 0; i < n; ++i) { | |
1644 | if (noClip || state->clip->test(x0 + i, y)) { | |
1645 | *p = color[0]; | |
1646 | if (!noClip) { | |
1647 | updateModX(x0 + i); | |
1648 | updateModY(y); | |
1649 | } | |
1650 | } | |
1651 | ++p; | |
1652 | } | |
1653 | } else { | |
1654 | for (i = 0; i < n; ++i) { | |
1655 | if (noClip || state->clip->test(x0 + i, y)) { | |
1656 | pattern->getColor(x0 + i, y, color); | |
1657 | *p = color[0]; | |
1658 | if (!noClip) { | |
1659 | updateModX(x0 + i); | |
1660 | updateModY(y); | |
1661 | } | |
1662 | } | |
1663 | ++p; | |
1664 | } | |
1665 | } | |
1666 | break; | |
1667 | ||
1668 | case splashModeAMono8: | |
1669 | p = &bitmap->data[y * bitmap->rowSize + 2 * x0]; | |
1670 | if (pattern->isStatic()) { | |
1671 | pattern->getColor(0, 0, color); | |
1672 | for (i = 0; i < n; ++i) { | |
1673 | if (noClip || state->clip->test(x0 + i, y)) { | |
1674 | p[0] = color[0]; | |
1675 | p[1] = color[1]; | |
1676 | if (!noClip) { | |
1677 | updateModX(x0 + i); | |
1678 | updateModY(y); | |
1679 | } | |
1680 | } | |
1681 | p += 2; | |
1682 | } | |
1683 | } else { | |
1684 | for (i = 0; i < n; ++i) { | |
1685 | if (noClip || state->clip->test(x0 + i, y)) { | |
1686 | pattern->getColor(x0 + i, y, color); | |
1687 | p[0] = color[0]; | |
1688 | p[1] = color[1]; | |
1689 | if (!noClip) { | |
1690 | updateModX(x0 + i); | |
1691 | updateModY(y); | |
1692 | } | |
1693 | } | |
1694 | p += 2; | |
1695 | } | |
1696 | } | |
1697 | break; | |
1698 | ||
1699 | case splashModeRGB8: | |
1700 | case splashModeBGR8: | |
1701 | p = &bitmap->data[y * bitmap->rowSize + 3 * x0]; | |
1702 | if (pattern->isStatic()) { | |
1703 | pattern->getColor(0, 0, color); | |
1704 | for (i = 0; i < n; ++i) { | |
1705 | if (noClip || state->clip->test(x0 + i, y)) { | |
1706 | p[0] = color[0]; | |
1707 | p[1] = color[1]; | |
1708 | p[2] = color[2]; | |
1709 | if (!noClip) { | |
1710 | updateModX(x0 + i); | |
1711 | updateModY(y); | |
1712 | } | |
1713 | } | |
1714 | p += 3; | |
1715 | } | |
1716 | } else { | |
1717 | for (i = 0; i < n; ++i) { | |
1718 | if (noClip || state->clip->test(x0 + i, y)) { | |
1719 | pattern->getColor(x0 + i, y, color); | |
1720 | p[0] = color[0]; | |
1721 | p[1] = color[1]; | |
1722 | p[2] = color[2]; | |
1723 | if (!noClip) { | |
1724 | updateModX(x0 + i); | |
1725 | updateModY(y); | |
1726 | } | |
1727 | } | |
1728 | p += 3; | |
1729 | } | |
1730 | } | |
1731 | break; | |
1732 | ||
1733 | case splashModeARGB8: | |
1734 | case splashModeBGRA8: | |
1735 | #if SPLASH_CMYK | |
1736 | case splashModeCMYK8: | |
1737 | #endif | |
1738 | p = &bitmap->data[y * bitmap->rowSize + 4 * x0]; | |
1739 | if (pattern->isStatic()) { | |
1740 | pattern->getColor(0, 0, color); | |
1741 | for (i = 0; i < n; ++i) { | |
1742 | if (noClip || state->clip->test(x0 + i, y)) { | |
1743 | p[0] = color[0]; | |
1744 | p[1] = color[1]; | |
1745 | p[2] = color[2]; | |
1746 | p[3] = color[3]; | |
1747 | if (!noClip) { | |
1748 | updateModX(x0 + i); | |
1749 | updateModY(y); | |
1750 | } | |
1751 | } | |
1752 | p += 4; | |
1753 | } | |
1754 | } else { | |
1755 | for (i = 0; i < n; ++i) { | |
1756 | if (noClip || state->clip->test(x0 + i, y)) { | |
1757 | pattern->getColor(x0 + i, y, color); | |
1758 | p[0] = color[0]; | |
1759 | p[1] = color[1]; | |
1760 | p[2] = color[2]; | |
1761 | p[3] = color[3]; | |
1762 | if (!noClip) { | |
1763 | updateModX(x0 + i); | |
1764 | updateModY(y); | |
1765 | } | |
1766 | } | |
1767 | p += 4; | |
1768 | } | |
1769 | } | |
1770 | break; | |
1771 | #if SPLASH_CMYK | |
1772 | case splashModeACMYK8: | |
1773 | p = &bitmap->data[y * bitmap->rowSize + 5 * x0]; | |
1774 | if (pattern->isStatic()) { | |
1775 | pattern->getColor(0, 0, color); | |
1776 | for (i = 0; i < n; ++i) { | |
1777 | if (noClip || state->clip->test(x0 + i, y)) { | |
1778 | p[0] = color[0]; | |
1779 | p[1] = color[1]; | |
1780 | p[2] = color[2]; | |
1781 | p[3] = color[3]; | |
1782 | p[4] = color[4]; | |
1783 | if (!noClip) { | |
1784 | updateModX(x0 + i); | |
1785 | updateModY(y); | |
1786 | } | |
1787 | } | |
1788 | p += 4; | |
1789 | } | |
1790 | } else { | |
1791 | for (i = 0; i < n; ++i) { | |
1792 | if (noClip || state->clip->test(x0 + i, y)) { | |
1793 | pattern->getColor(x0 + i, y, color); | |
1794 | p[0] = color[0]; | |
1795 | p[1] = color[1]; | |
1796 | p[2] = color[2]; | |
1797 | p[3] = color[3]; | |
1798 | p[4] = color[4]; | |
1799 | if (!noClip) { | |
1800 | updateModX(x0 + i); | |
1801 | updateModY(y); | |
1802 | } | |
1803 | } | |
1804 | p += 4; | |
1805 | } | |
1806 | } | |
1807 | break; | |
1808 | #endif | |
1809 | } | |
1810 | } | |
1811 | } | |
1812 | ||
1813 | void Splash::xorSpan(int x0, int x1, int y, SplashPattern *pattern, | |
1814 | GBool noClip) { | |
1815 | SplashColor color; | |
1816 | SplashColorPtr p; | |
1817 | Guchar mask; | |
1818 | int i, j, n; | |
1819 | ||
1820 | n = x1 - x0 + 1; | |
1821 | ||
1822 | if (noClip) { | |
1823 | updateModX(x0); | |
1824 | updateModX(x1); | |
1825 | updateModY(y); | |
1826 | } | |
1827 | ||
1828 | switch (bitmap->mode) { | |
1829 | case splashModeMono1: | |
1830 | p = &bitmap->data[y * bitmap->rowSize + (x0 >> 3)]; | |
1831 | i = 0; | |
1832 | if ((j = x0 & 7)) { | |
1833 | mask = 0x80 >> j; | |
1834 | for (; j < 8 && i < n; ++i, ++j) { | |
1835 | if (noClip || state->clip->test(x0 + i, y)) { | |
1836 | pattern->getColor(x0 + i, y, color); | |
1837 | if (color[0]) { | |
1838 | *p ^= mask; | |
1839 | } | |
1840 | if (!noClip) { | |
1841 | updateModX(x0 + i); | |
1842 | updateModY(y); | |
1843 | } | |
1844 | } | |
1845 | mask >>= 1; | |
1846 | } | |
1847 | ++p; | |
1848 | } | |
1849 | while (i < n) { | |
1850 | mask = 0x80; | |
1851 | for (j = 0; j < 8 && i < n; ++i, ++j) { | |
1852 | if (noClip || state->clip->test(x0 + i, y)) { | |
1853 | pattern->getColor(x0 + i, y, color); | |
1854 | if (color[0]) { | |
1855 | *p ^= mask; | |
1856 | } | |
1857 | if (!noClip) { | |
1858 | updateModX(x0 + i); | |
1859 | updateModY(y); | |
1860 | } | |
1861 | } | |
1862 | mask >>= 1; | |
1863 | } | |
1864 | ++p; | |
1865 | } | |
1866 | break; | |
1867 | ||
1868 | case splashModeMono8: | |
1869 | p = &bitmap->data[y * bitmap->rowSize + x0]; | |
1870 | for (i = 0; i < n; ++i) { | |
1871 | if (noClip || state->clip->test(x0 + i, y)) { | |
1872 | pattern->getColor(x0 + i, y, color); | |
1873 | *p ^= color[0]; | |
1874 | if (!noClip) { | |
1875 | updateModX(x0 + i); | |
1876 | updateModY(y); | |
1877 | } | |
1878 | } | |
1879 | ++p; | |
1880 | } | |
1881 | break; | |
1882 | ||
1883 | case splashModeAMono8: | |
1884 | p = &bitmap->data[y * bitmap->rowSize + 2 * x0]; | |
1885 | for (i = 0; i < n; ++i) { | |
1886 | if (noClip || state->clip->test(x0 + i, y)) { | |
1887 | pattern->getColor(x0 + i, y, color); | |
1888 | p[0] ^= color[0]; | |
1889 | p[1] ^= color[1]; | |
1890 | if (!noClip) { | |
1891 | updateModX(x0 + i); | |
1892 | updateModY(y); | |
1893 | } | |
1894 | } | |
1895 | p += 2; | |
1896 | } | |
1897 | break; | |
1898 | ||
1899 | case splashModeRGB8: | |
1900 | case splashModeBGR8: | |
1901 | p = &bitmap->data[y * bitmap->rowSize + 3 * x0]; | |
1902 | for (i = 0; i < n; ++i) { | |
1903 | if (noClip || state->clip->test(x0 + i, y)) { | |
1904 | pattern->getColor(x0 + i, y, color); | |
1905 | p[0] ^= color[0]; | |
1906 | p[1] ^= color[1]; | |
1907 | p[2] ^= color[2]; | |
1908 | if (!noClip) { | |
1909 | updateModX(x0 + i); | |
1910 | updateModY(y); | |
1911 | } | |
1912 | } | |
1913 | p += 3; | |
1914 | } | |
1915 | break; | |
1916 | ||
1917 | case splashModeARGB8: | |
1918 | case splashModeBGRA8: | |
1919 | #if SPLASH_CMYK | |
1920 | case splashModeCMYK8: | |
1921 | #endif | |
1922 | p = &bitmap->data[y * bitmap->rowSize + 4 * x0]; | |
1923 | for (i = 0; i < n; ++i) { | |
1924 | if (noClip || state->clip->test(x0 + i, y)) { | |
1925 | pattern->getColor(x0 + i, y, color); | |
1926 | p[0] ^= color[0]; | |
1927 | p[1] ^= color[1]; | |
1928 | p[2] ^= color[2]; | |
1929 | p[3] ^= color[3]; | |
1930 | if (!noClip) { | |
1931 | updateModX(x0 + i); | |
1932 | updateModY(y); | |
1933 | } | |
1934 | } | |
1935 | p += 4; | |
1936 | } | |
1937 | break; | |
1938 | #if SPLASH_CMYK | |
1939 | case splashModeACMYK8: | |
1940 | p = &bitmap->data[y * bitmap->rowSize + 5 * x0]; | |
1941 | for (i = 0; i < n; ++i) { | |
1942 | if (noClip || state->clip->test(x0 + i, y)) { | |
1943 | pattern->getColor(x0 + i, y, color); | |
1944 | p[0] ^= color[0]; | |
1945 | p[1] ^= color[1]; | |
1946 | p[2] ^= color[2]; | |
1947 | p[3] ^= color[3]; | |
1948 | p[4] ^= color[4]; | |
1949 | if (!noClip) { | |
1950 | updateModX(x0 + i); | |
1951 | updateModY(y); | |
1952 | } | |
1953 | } | |
1954 | p += 4; | |
1955 | } | |
1956 | break; | |
1957 | #endif | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | SplashError Splash::fillChar(SplashCoord x, SplashCoord y, | |
1962 | int c, SplashFont *font) { | |
1963 | SplashGlyphBitmap glyph; | |
1964 | int x0, y0, xFrac, yFrac; | |
1965 | SplashError err; | |
1966 | ||
1967 | if (debugMode) { | |
1968 | printf("fillChar: x=%.2f y=%.2f c=%3d=0x%02x='%c'\n", | |
1969 | (double)x, (double)y, c, c, c); | |
1970 | } | |
1971 | x0 = splashFloor(x); | |
1972 | xFrac = splashFloor((x - x0) * splashFontFraction); | |
1973 | y0 = splashFloor(y); | |
1974 | yFrac = splashFloor((y - y0) * splashFontFraction); | |
1975 | if (!font->getGlyph(c, xFrac, yFrac, &glyph)) { | |
1976 | return splashErrNoGlyph; | |
1977 | } | |
1978 | err = fillGlyph(x, y, &glyph); | |
1979 | if (glyph.freeData) { | |
1980 | gfree(glyph.data); | |
1981 | } | |
1982 | return err; | |
1983 | } | |
1984 | ||
1985 | SplashError Splash::fillGlyph(SplashCoord x, SplashCoord y, | |
1986 | SplashGlyphBitmap *glyph) { | |
1987 | SplashBlendFunc blendFunc; | |
1988 | int alpha0, alpha, ialpha; | |
1989 | Guchar *p; | |
1990 | SplashColor fg, dest, blend; | |
1991 | SplashColorPtr pix; | |
1992 | SplashClipResult clipRes; | |
1993 | GBool noClip; | |
1994 | Guchar t; | |
1995 | int x0, y0, x1, y1, xx, xx1, yy; | |
1996 | ||
1997 | x0 = splashFloor(x); | |
1998 | y0 = splashFloor(y); | |
1999 | ||
2000 | if ((clipRes = state->clip->testRect(x0 - glyph->x, | |
2001 | y0 - glyph->y, | |
2002 | x0 - glyph->x + glyph->w - 1, | |
2003 | y0 - glyph->y + glyph->h - 1)) | |
2004 | != splashClipAllOutside) { | |
2005 | noClip = clipRes == splashClipAllInside; | |
2006 | ||
2007 | if (noClip) { | |
2008 | updateModX(x0 - glyph->x); | |
2009 | updateModX(x0 - glyph->x + glyph->w - 1); | |
2010 | updateModY(y0 - glyph->y); | |
2011 | updateModY(y0 - glyph->y + glyph->h - 1); | |
2012 | } | |
2013 | ||
2014 | //~ optimize this | |
2015 | if (state->fillAlpha != 1 || softMask || state->blendFunc) { | |
2016 | blendFunc = state->blendFunc ? state->blendFunc : &blendNormal; | |
2017 | if (glyph->aa) { | |
2018 | p = glyph->data; | |
2019 | for (yy = 0, y1 = y0 - glyph->y; yy < glyph->h; ++yy, ++y1) { | |
2020 | for (xx = 0, x1 = x0 - glyph->x; xx < glyph->w; ++xx, ++x1) { | |
2021 | alpha = *p++; | |
2022 | if (softMask) { | |
2023 | alpha = (int)(alpha * state->fillAlpha * | |
2024 | softMask->data[y1 * softMask->rowSize + x1]); | |
2025 | } else { | |
2026 | alpha = (int)(alpha * state->fillAlpha); | |
2027 | } | |
2028 | if (alpha > 0) { | |
2029 | if (noClip || state->clip->test(x1, y1)) { | |
2030 | ialpha = 255 - alpha; | |
2031 | state->fillPattern->getColor(x1, y1, fg); | |
2032 | switch (bitmap->mode) { | |
2033 | case splashModeMono1: | |
2034 | pix = &bitmap->data[y1 * bitmap->rowSize + (x1 >> 3)]; | |
2035 | dest[0] = (*pix >> (7 - (x1 & 7))) & 1; | |
2036 | (*blendFunc)(fg, dest, blend, bitmap->mode); | |
2037 | t = (alpha * blend[0] + ialpha * dest[0]) >> 8; | |
2038 | if (t) { | |
2039 | *pix |= 0x80 >> (x1 & 7); | |
2040 | } else { | |
2041 | *pix &= ~(0x80 >> (x1 & 7)); | |
2042 | } | |
2043 | break; | |
2044 | case splashModeMono8: | |
2045 | pix = &bitmap->data[y1 * bitmap->rowSize + x1]; | |
2046 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2047 | // note: floor(x / 255) = x >> 8 (for 16-bit x) | |
2048 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2049 | break; | |
2050 | case splashModeAMono8: | |
2051 | pix = &bitmap->data[y1 * bitmap->rowSize + 2 * x1]; | |
2052 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2053 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2054 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2055 | break; | |
2056 | case splashModeRGB8: | |
2057 | case splashModeBGR8: | |
2058 | pix = &bitmap->data[y1 * bitmap->rowSize + 3 * x1]; | |
2059 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2060 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2061 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2062 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2063 | break; | |
2064 | case splashModeARGB8: | |
2065 | case splashModeBGRA8: | |
2066 | #if SPLASH_CMYK | |
2067 | case splashModeCMYK8: | |
2068 | #endif | |
2069 | pix = &bitmap->data[y1 * bitmap->rowSize + 4 * x1]; | |
2070 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2071 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2072 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2073 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2074 | pix[3] = (alpha * blend[3] + ialpha * pix[3]) >> 8; | |
2075 | break; | |
2076 | #if SPLASH_CMYK | |
2077 | case splashModeACMYK8: | |
2078 | pix = &bitmap->data[y1 * bitmap->rowSize + 5 * x1]; | |
2079 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2080 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2081 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2082 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2083 | pix[3] = (alpha * blend[3] + ialpha * pix[3]) >> 8; | |
2084 | pix[4] = (alpha * blend[4] + ialpha * pix[4]) >> 8; | |
2085 | break; | |
2086 | #endif | |
2087 | } | |
2088 | if (!noClip) { | |
2089 | updateModX(x1); | |
2090 | updateModY(y1); | |
2091 | } | |
2092 | } | |
2093 | } | |
2094 | } | |
2095 | } | |
2096 | ||
2097 | } else { | |
2098 | p = glyph->data; | |
2099 | for (yy = 0, y1 = y0 - glyph->y; yy < glyph->h; ++yy, ++y1) { | |
2100 | for (xx = 0, x1 = x0 - glyph->x; xx < glyph->w; xx += 8) { | |
2101 | alpha0 = *p++; | |
2102 | for (xx1 = 0; xx1 < 8 && xx + xx1 < glyph->w; ++xx1, ++x1) { | |
2103 | if (alpha0 & 0x80) { | |
2104 | if (noClip || state->clip->test(x1, y1)) { | |
2105 | if (softMask) { | |
2106 | alpha = (int)(state->fillAlpha * | |
2107 | softMask->data[y1 * softMask->rowSize + x1]); | |
2108 | } else { | |
2109 | alpha = (int)(state->fillAlpha * 255); | |
2110 | } | |
2111 | ialpha = 255 - alpha; | |
2112 | state->fillPattern->getColor(x1, y1, fg); | |
2113 | switch (bitmap->mode) { | |
2114 | case splashModeMono1: | |
2115 | pix = &bitmap->data[y1 * bitmap->rowSize + (x1 >> 3)]; | |
2116 | dest[0] = (*pix >> (7 - (x1 & 7))) & 1; | |
2117 | (*blendFunc)(fg, dest, blend, bitmap->mode); | |
2118 | t = (alpha * blend[0] + ialpha * dest[0]) >> 8; | |
2119 | if (t) { | |
2120 | *pix |= 0x80 >> (x1 & 7); | |
2121 | } else { | |
2122 | *pix &= ~(0x80 >> (x1 & 7)); | |
2123 | } | |
2124 | break; | |
2125 | case splashModeMono8: | |
2126 | pix = &bitmap->data[y1 * bitmap->rowSize + x1]; | |
2127 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2128 | // note: floor(x / 255) = x >> 8 (for 16-bit x) | |
2129 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2130 | break; | |
2131 | case splashModeAMono8: | |
2132 | pix = &bitmap->data[y1 * bitmap->rowSize + 2 * x1]; | |
2133 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2134 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2135 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2136 | break; | |
2137 | case splashModeRGB8: | |
2138 | case splashModeBGR8: | |
2139 | pix = &bitmap->data[y1 * bitmap->rowSize + 3 * x1]; | |
2140 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2141 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2142 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2143 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2144 | break; | |
2145 | case splashModeARGB8: | |
2146 | case splashModeBGRA8: | |
2147 | #if SPLASH_CMYK | |
2148 | case splashModeCMYK8: | |
2149 | #endif | |
2150 | pix = &bitmap->data[y1 * bitmap->rowSize + 4 * x1]; | |
2151 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2152 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2153 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2154 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2155 | pix[3] = (alpha * blend[3] + ialpha * pix[3]) >> 8; | |
2156 | break; | |
2157 | #if SPLASH_CMYK | |
2158 | case splashModeACMYK8: | |
2159 | pix = &bitmap->data[y1 * bitmap->rowSize + 5 * x1]; | |
2160 | (*blendFunc)(fg, pix, blend, bitmap->mode); | |
2161 | pix[0] = (alpha * blend[0] + ialpha * pix[0]) >> 8; | |
2162 | pix[1] = (alpha * blend[1] + ialpha * pix[1]) >> 8; | |
2163 | pix[2] = (alpha * blend[2] + ialpha * pix[2]) >> 8; | |
2164 | pix[3] = (alpha * blend[3] + ialpha * pix[3]) >> 8; | |
2165 | pix[4] = (alpha * blend[4] + ialpha * pix[4]) >> 8; | |
2166 | break; | |
2167 | #endif | |
2168 | } | |
2169 | if (!noClip) { | |
2170 | updateModX(x1); | |
2171 | updateModY(y1); | |
2172 | } | |
2173 | } | |
2174 | } | |
2175 | alpha0 <<= 1; | |
2176 | } | |
2177 | } | |
2178 | } | |
2179 | } | |
2180 | ||
2181 | } else { | |
2182 | if (glyph->aa) { | |
2183 | p = glyph->data; | |
2184 | for (yy = 0, y1 = y0 - glyph->y; yy < glyph->h; ++yy, ++y1) { | |
2185 | for (xx = 0, x1 = x0 - glyph->x; xx < glyph->w; ++xx, ++x1) { | |
2186 | alpha = *p++; | |
2187 | if (alpha > 0) { | |
2188 | if (noClip || state->clip->test(x1, y1)) { | |
2189 | ialpha = 255 - alpha; | |
2190 | state->fillPattern->getColor(x1, y1, fg); | |
2191 | switch (bitmap->mode) { | |
2192 | case splashModeMono1: | |
2193 | if (alpha >= 0x80) { | |
2194 | pix = &bitmap->data[y1 * bitmap->rowSize + (x1 >> 3)]; | |
2195 | if (fg[0]) { | |
2196 | *pix |= 0x80 >> (x1 & 7); | |
2197 | } else { | |
2198 | *pix &= ~(0x80 >> (x1 & 7)); | |
2199 | } | |
2200 | } | |
2201 | break; | |
2202 | case splashModeMono8: | |
2203 | pix = &bitmap->data[y1 * bitmap->rowSize + x1]; | |
2204 | // note: floor(x / 255) = x >> 8 (for 16-bit x) | |
2205 | pix[0] = (alpha * fg[0] + ialpha * pix[0]) >> 8; | |
2206 | break; | |
2207 | case splashModeAMono8: | |
2208 | pix = &bitmap->data[y1 * bitmap->rowSize + 2 * x1]; | |
2209 | pix[0] = (alpha * fg[0] + ialpha * pix[0]) >> 8; | |
2210 | pix[1] = (alpha * fg[1] + ialpha * pix[1]) >> 8; | |
2211 | break; | |
2212 | case splashModeRGB8: | |
2213 | case splashModeBGR8: | |
2214 | pix = &bitmap->data[y1 * bitmap->rowSize + 3 * x1]; | |
2215 | pix[0] = (alpha * fg[0] + ialpha * pix[0]) >> 8; | |
2216 | pix[1] = (alpha * fg[1] + ialpha * pix[1]) >> 8; | |
2217 | pix[2] = (alpha * fg[2] + ialpha * pix[2]) >> 8; | |
2218 | break; | |
2219 | case splashModeARGB8: | |
2220 | case splashModeBGRA8: | |
2221 | #if SPLASH_CMYK | |
2222 | case splashModeCMYK8: | |
2223 | #endif | |
2224 | pix = &bitmap->data[y1 * bitmap->rowSize + 4 * x1]; | |
2225 | pix[0] = (alpha * fg[0] + ialpha * pix[0]) >> 8; | |
2226 | pix[1] = (alpha * fg[1] + ialpha * pix[1]) >> 8; | |
2227 | pix[2] = (alpha * fg[2] + ialpha * pix[2]) >> 8; | |
2228 | pix[3] = (alpha * fg[3] + ialpha * pix[3]) >> 8; | |
2229 | break; | |
2230 | #if SPLASH_CMYK | |
2231 | case splashModeACMYK8: | |
2232 | pix = &bitmap->data[y1 * bitmap->rowSize + 5 * x1]; | |
2233 | pix[0] = (alpha * fg[0] + ialpha * pix[0]) >> 8; | |
2234 | pix[1] = (alpha * fg[1] + ialpha * pix[1]) >> 8; | |
2235 | pix[2] = (alpha * fg[2] + ialpha * pix[2]) >> 8; | |
2236 | pix[3] = (alpha * fg[3] + ialpha * pix[3]) >> 8; | |
2237 | pix[4] = (alpha * fg[4] + ialpha * pix[4]) >> 8; | |
2238 | break; | |
2239 | #endif | |
2240 | } | |
2241 | if (!noClip) { | |
2242 | updateModX(x1); | |
2243 | updateModY(y1); | |
2244 | } | |
2245 | } | |
2246 | } | |
2247 | } | |
2248 | } | |
2249 | ||
2250 | } else { | |
2251 | p = glyph->data; | |
2252 | for (yy = 0, y1 = y0 - glyph->y; yy < glyph->h; ++yy, ++y1) { | |
2253 | for (xx = 0, x1 = x0 - glyph->x; xx < glyph->w; xx += 8) { | |
2254 | alpha0 = *p++; | |
2255 | for (xx1 = 0; xx1 < 8 && xx + xx1 < glyph->w; ++xx1, ++x1) { | |
2256 | if (alpha0 & 0x80) { | |
2257 | if (noClip || state->clip->test(x1, y1)) { | |
2258 | state->fillPattern->getColor(x1, y1, fg); | |
2259 | switch (bitmap->mode) { | |
2260 | case splashModeMono1: | |
2261 | pix = &bitmap->data[y1 * bitmap->rowSize + (x1 >> 3)]; | |
2262 | if (fg[0]) { | |
2263 | *pix |= 0x80 >> (x1 & 7); | |
2264 | } else { | |
2265 | *pix &= ~(0x80 >> (x1 & 7)); | |
2266 | } | |
2267 | break; | |
2268 | case splashModeMono8: | |
2269 | pix = &bitmap->data[y1 * bitmap->rowSize + x1]; | |
2270 | pix[0] = fg[0]; | |
2271 | break; | |
2272 | case splashModeAMono8: | |
2273 | pix = &bitmap->data[y1 * bitmap->rowSize + 2 * x1]; | |
2274 | pix[0] = fg[0]; | |
2275 | pix[1] = fg[1]; | |
2276 | break; | |
2277 | case splashModeRGB8: | |
2278 | case splashModeBGR8: | |
2279 | pix = &bitmap->data[y1 * bitmap->rowSize + 3 * x1]; | |
2280 | pix[0] = fg[0]; | |
2281 | pix[1] = fg[1]; | |
2282 | pix[2] = fg[2]; | |
2283 | break; | |
2284 | case splashModeARGB8: | |
2285 | case splashModeBGRA8: | |
2286 | #if SPLASH_CMYK | |
2287 | case splashModeCMYK8: | |
2288 | #endif | |
2289 | pix = &bitmap->data[y1 * bitmap->rowSize + 4 * x1]; | |
2290 | pix[0] = fg[0]; | |
2291 | pix[1] = fg[1]; | |
2292 | pix[2] = fg[2]; | |
2293 | pix[3] = fg[3]; | |
2294 | break; | |
2295 | #if SPLASH_CMYK | |
2296 | case splashModeACMYK8: | |
2297 | pix = &bitmap->data[y1 * bitmap->rowSize + 5 * x1]; | |
2298 | pix[0] = fg[0]; | |
2299 | pix[1] = fg[1]; | |
2300 | pix[2] = fg[2]; | |
2301 | pix[3] = fg[3]; | |
2302 | pix[4] = fg[4]; | |
2303 | break; | |
2304 | #endif | |
2305 | } | |
2306 | if (!noClip) { | |
2307 | updateModX(x1); | |
2308 | updateModY(y1); | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | alpha0 <<= 1; | |
2313 | } | |
2314 | } | |
2315 | } | |
2316 | } | |
2317 | } | |
2318 | } | |
2319 | opClipRes = clipRes; | |
2320 | ||
2321 | return splashOk; | |
2322 | } | |
2323 | ||
2324 | SplashError Splash::fillImageMask(SplashImageMaskSource src, void *srcData, | |
2325 | int w, int h, SplashCoord *mat) { | |
2326 | GBool rot; | |
2327 | SplashCoord xScale, yScale, xShear, yShear, yShear1; | |
2328 | int tx, tx2, ty, ty2, scaledWidth, scaledHeight, xSign, ySign; | |
2329 | int ulx, uly, llx, lly, urx, ury, lrx, lry; | |
2330 | int ulx1, uly1, llx1, lly1, urx1, ury1, lrx1, lry1; | |
2331 | int xMin, xMax, yMin, yMax; | |
2332 | SplashClipResult clipRes, clipRes2; | |
2333 | int yp, yq, yt, yStep, lastYStep; | |
2334 | int xp, xq, xt, xStep, xSrc; | |
2335 | int k1, spanXMin, spanXMax, spanY; | |
2336 | SplashColorPtr pixBuf, p; | |
2337 | int pixAcc; | |
2338 | SplashCoord alpha; | |
2339 | int x, y, x1, x2, y2; | |
2340 | SplashCoord y1; | |
2341 | int n, m, i, j; | |
2342 | ||
2343 | if (debugMode) { | |
2344 | printf("fillImageMask: w=%d h=%d mat=[%.2f %.2f %.2f %.2f %.2f %.2f]\n", | |
2345 | w, h, (double)mat[0], (double)mat[1], (double)mat[2], | |
2346 | (double)mat[3], (double)mat[4], (double)mat[5]); | |
2347 | } | |
2348 | ||
2349 | // check for singular matrix | |
2350 | if (splashAbs(mat[0] * mat[3] - mat[1] * mat[2]) < 0.000001) { | |
2351 | return splashErrSingularMatrix; | |
2352 | } | |
2353 | ||
2354 | // compute scale, shear, rotation, translation parameters | |
2355 | rot = splashAbs(mat[1]) > splashAbs(mat[0]); | |
2356 | if (rot) { | |
2357 | xScale = -mat[1]; | |
2358 | yScale = mat[2] - (mat[0] * mat[3]) / mat[1]; | |
2359 | xShear = -mat[3] / yScale; | |
2360 | yShear = -mat[0] / mat[1]; | |
2361 | } else { | |
2362 | xScale = mat[0]; | |
2363 | yScale = mat[3] - (mat[1] * mat[2]) / mat[0]; | |
2364 | xShear = mat[2] / yScale; | |
2365 | yShear = mat[1] / mat[0]; | |
2366 | } | |
2367 | // the +/-0.01 in these computations is to avoid floating point | |
2368 | // precision problems which can lead to gaps between image stripes | |
2369 | // (it can cause image stripes to overlap, but that's a much less | |
2370 | // visible problem) | |
2371 | if (xScale >= 0) { | |
2372 | tx = splashRound(mat[4] - 0.01); | |
2373 | tx2 = splashRound(mat[4] + xScale + 0.01) - 1; | |
2374 | } else { | |
2375 | tx = splashRound(mat[4] + 0.01) - 1; | |
2376 | tx2 = splashRound(mat[4] + xScale - 0.01); | |
2377 | } | |
2378 | scaledWidth = abs(tx2 - tx) + 1; | |
2379 | if (scaledWidth == 0) { | |
2380 | // technically, this should draw nothing, but it generally seems | |
2381 | // better to draw a one-pixel-wide stripe rather than throwing it | |
2382 | // away | |
2383 | scaledWidth = 1; | |
2384 | } | |
2385 | if (yScale >= 0) { | |
2386 | ty = splashRound(mat[5] - 0.01); | |
2387 | ty2 = splashRound(mat[5] + yScale + 0.01) - 1; | |
2388 | } else { | |
2389 | ty = splashRound(mat[5] + 0.01) - 1; | |
2390 | ty2 = splashRound(mat[5] + yScale - 0.01); | |
2391 | } | |
2392 | scaledHeight = abs(ty2 - ty) + 1; | |
2393 | if (scaledHeight == 0) { | |
2394 | // technically, this should draw nothing, but it generally seems | |
2395 | // better to draw a one-pixel-wide stripe rather than throwing it | |
2396 | // away | |
2397 | scaledHeight = 1; | |
2398 | } | |
2399 | xSign = (xScale < 0) ? -1 : 1; | |
2400 | ySign = (yScale < 0) ? -1 : 1; | |
2401 | yShear1 = (SplashCoord)xSign * yShear; | |
2402 | ||
2403 | // clipping | |
2404 | ulx1 = 0; | |
2405 | uly1 = 0; | |
2406 | urx1 = xSign * (scaledWidth - 1); | |
2407 | ury1 = (int)(yShear * urx1); | |
2408 | llx1 = splashRound(xShear * ySign * (scaledHeight - 1)); | |
2409 | lly1 = ySign * (scaledHeight - 1) + (int)(yShear * llx1); | |
2410 | lrx1 = xSign * (scaledWidth - 1) + | |
2411 | splashRound(xShear * ySign * (scaledHeight - 1)); | |
2412 | lry1 = ySign * (scaledHeight - 1) + (int)(yShear * lrx1); | |
2413 | if (rot) { | |
2414 | ulx = tx + uly1; uly = ty - ulx1; | |
2415 | urx = tx + ury1; ury = ty - urx1; | |
2416 | llx = tx + lly1; lly = ty - llx1; | |
2417 | lrx = tx + lry1; lry = ty - lrx1; | |
2418 | } else { | |
2419 | ulx = tx + ulx1; uly = ty + uly1; | |
2420 | urx = tx + urx1; ury = ty + ury1; | |
2421 | llx = tx + llx1; lly = ty + lly1; | |
2422 | lrx = tx + lrx1; lry = ty + lry1; | |
2423 | } | |
2424 | xMin = (ulx < urx) ? (ulx < llx) ? (ulx < lrx) ? ulx : lrx | |
2425 | : (llx < lrx) ? llx : lrx | |
2426 | : (urx < llx) ? (urx < lrx) ? urx : lrx | |
2427 | : (llx < lrx) ? llx : lrx; | |
2428 | xMax = (ulx > urx) ? (ulx > llx) ? (ulx > lrx) ? ulx : lrx | |
2429 | : (llx > lrx) ? llx : lrx | |
2430 | : (urx > llx) ? (urx > lrx) ? urx : lrx | |
2431 | : (llx > lrx) ? llx : lrx; | |
2432 | yMin = (uly < ury) ? (uly < lly) ? (uly < lry) ? uly : lry | |
2433 | : (lly < lry) ? lly : lry | |
2434 | : (ury < lly) ? (ury < lry) ? ury : lry | |
2435 | : (lly < lry) ? lly : lry; | |
2436 | yMax = (uly > ury) ? (uly > lly) ? (uly > lry) ? uly : lry | |
2437 | : (lly > lry) ? lly : lry | |
2438 | : (ury > lly) ? (ury > lry) ? ury : lry | |
2439 | : (lly > lry) ? lly : lry; | |
2440 | clipRes = state->clip->testRect(xMin, yMin, xMax, yMax); | |
2441 | opClipRes = clipRes; | |
2442 | ||
2443 | // compute Bresenham parameters for x and y scaling | |
2444 | yp = h / scaledHeight; | |
2445 | yq = h % scaledHeight; | |
2446 | xp = w / scaledWidth; | |
2447 | xq = w % scaledWidth; | |
2448 | ||
2449 | // allocate pixel buffer | |
2450 | pixBuf = (SplashColorPtr)gmalloc((yp + 1) * w); | |
2451 | ||
2452 | // init y scale Bresenham | |
2453 | yt = 0; | |
2454 | lastYStep = 1; | |
2455 | ||
2456 | for (y = 0; y < scaledHeight; ++y) { | |
2457 | ||
2458 | // y scale Bresenham | |
2459 | yStep = yp; | |
2460 | yt += yq; | |
2461 | if (yt >= scaledHeight) { | |
2462 | yt -= scaledHeight; | |
2463 | ++yStep; | |
2464 | } | |
2465 | ||
2466 | // read row(s) from image | |
2467 | n = (yp > 0) ? yStep : lastYStep; | |
2468 | if (n > 0) { | |
2469 | p = pixBuf; | |
2470 | for (i = 0; i < n; ++i) { | |
2471 | (*src)(srcData, p); | |
2472 | p += w; | |
2473 | } | |
2474 | } | |
2475 | lastYStep = yStep; | |
2476 | ||
2477 | // loop-invariant constants | |
2478 | k1 = splashRound(xShear * ySign * y); | |
2479 | ||
2480 | // clipping test | |
2481 | if (clipRes != splashClipAllInside && | |
2482 | !rot && | |
2483 | (int)(yShear * k1) == | |
2484 | (int)(yShear * (xSign * (scaledWidth - 1) + k1))) { | |
2485 | if (xSign > 0) { | |
2486 | spanXMin = tx + k1; | |
2487 | spanXMax = spanXMin + (scaledWidth - 1); | |
2488 | } else { | |
2489 | spanXMax = tx + k1; | |
2490 | spanXMin = spanXMax - (scaledWidth - 1); | |
2491 | } | |
2492 | spanY = ty + ySign * y + (int)(yShear * k1); | |
2493 | clipRes2 = state->clip->testSpan(spanXMin, spanXMax, spanY); | |
2494 | if (clipRes2 == splashClipAllOutside) { | |
2495 | continue; | |
2496 | } | |
2497 | } else { | |
2498 | clipRes2 = clipRes; | |
2499 | } | |
2500 | ||
2501 | // init x scale Bresenham | |
2502 | xt = 0; | |
2503 | xSrc = 0; | |
2504 | ||
2505 | // x shear | |
2506 | x1 = k1; | |
2507 | ||
2508 | // y shear | |
2509 | y1 = (SplashCoord)ySign * y + yShear * x1; | |
2510 | // this is a kludge: if yShear1 is negative, then (int)y1 would | |
2511 | // change immediately after the first pixel, which is not what we | |
2512 | // want | |
2513 | if (yShear1 < 0) { | |
2514 | y1 += 0.999; | |
2515 | } | |
2516 | ||
2517 | // loop-invariant constants | |
2518 | n = yStep > 0 ? yStep : 1; | |
2519 | ||
2520 | for (x = 0; x < scaledWidth; ++x) { | |
2521 | ||
2522 | // x scale Bresenham | |
2523 | xStep = xp; | |
2524 | xt += xq; | |
2525 | if (xt >= scaledWidth) { | |
2526 | xt -= scaledWidth; | |
2527 | ++xStep; | |
2528 | } | |
2529 | ||
2530 | // rotation | |
2531 | if (rot) { | |
2532 | x2 = (int)y1; | |
2533 | y2 = -x1; | |
2534 | } else { | |
2535 | x2 = x1; | |
2536 | y2 = (int)y1; | |
2537 | } | |
2538 | ||
2539 | // compute the alpha value for (x,y) after the x and y scaling | |
2540 | // operations | |
2541 | m = xStep > 0 ? xStep : 1; | |
2542 | p = pixBuf + xSrc; | |
2543 | pixAcc = 0; | |
2544 | for (i = 0; i < n; ++i) { | |
2545 | for (j = 0; j < m; ++j) { | |
2546 | pixAcc += *p++; | |
2547 | } | |
2548 | p += w - m; | |
2549 | } | |
2550 | ||
2551 | // blend fill color with background | |
2552 | if (pixAcc != 0) { | |
2553 | if (pixAcc == n * m) { | |
2554 | drawPixel(tx + x2, ty + y2, state->fillPattern, state->fillAlpha, | |
2555 | clipRes2 == splashClipAllInside); | |
2556 | } else { | |
2557 | alpha = (SplashCoord)pixAcc / (SplashCoord)(n * m); | |
2558 | drawPixel(tx + x2, ty + y2, state->fillPattern, | |
2559 | state->fillAlpha * alpha, | |
2560 | clipRes2 == splashClipAllInside); | |
2561 | } | |
2562 | } | |
2563 | ||
2564 | // x scale Bresenham | |
2565 | xSrc += xStep; | |
2566 | ||
2567 | // x shear | |
2568 | x1 += xSign; | |
2569 | ||
2570 | // y shear | |
2571 | y1 += yShear1; | |
2572 | } | |
2573 | } | |
2574 | ||
2575 | // free memory | |
2576 | gfree(pixBuf); | |
2577 | ||
2578 | return splashOk; | |
2579 | } | |
2580 | ||
2581 | SplashError Splash::drawImage(SplashImageSource src, void *srcData, | |
2582 | SplashColorMode srcMode, | |
2583 | int w, int h, SplashCoord *mat) { | |
2584 | GBool ok, rot, halftone, srcAlpha; | |
2585 | SplashCoord xScale, yScale, xShear, yShear, yShear1; | |
2586 | int tx, tx2, ty, ty2, scaledWidth, scaledHeight, xSign, ySign; | |
2587 | int ulx, uly, llx, lly, urx, ury, lrx, lry; | |
2588 | int ulx1, uly1, llx1, lly1, urx1, ury1, lrx1, lry1; | |
2589 | int xMin, xMax, yMin, yMax; | |
2590 | SplashClipResult clipRes, clipRes2; | |
2591 | int yp, yq, yt, yStep, lastYStep; | |
2592 | int xp, xq, xt, xStep, xSrc; | |
2593 | int k1, spanXMin, spanXMax, spanY; | |
2594 | SplashColorPtr pixBuf, p; | |
2595 | SplashColor pix; | |
2596 | #if SPLASH_CMYK | |
2597 | int pixAcc0, pixAcc1, pixAcc2, pixAcc3; | |
2598 | #else | |
2599 | int pixAcc0, pixAcc1, pixAcc2; | |
2600 | #endif | |
2601 | int alphaAcc; | |
2602 | SplashCoord pixMul, alphaMul, alpha; | |
2603 | int x, y, x1, x2, y2; | |
2604 | SplashCoord y1; | |
2605 | int nComps, n, m, i, j; | |
2606 | ||
2607 | if (debugMode) { | |
2608 | printf("drawImage: srcMode=%d w=%d h=%d mat=[%.2f %.2f %.2f %.2f %.2f %.2f]\n", | |
2609 | srcMode, w, h, (double)mat[0], (double)mat[1], (double)mat[2], | |
2610 | (double)mat[3], (double)mat[4], (double)mat[5]); | |
2611 | } | |
2612 | ||
2613 | // check color modes | |
2614 | ok = gFalse; // make gcc happy | |
2615 | nComps = 0; // make gcc happy | |
2616 | halftone = gFalse; | |
2617 | srcAlpha = gFalse; | |
2618 | switch (bitmap->mode) { | |
2619 | case splashModeMono1: | |
2620 | ok = srcMode == splashModeMono1 || srcMode == splashModeMono8 || | |
2621 | srcMode == splashModeAMono8; | |
2622 | halftone = srcMode == splashModeMono8 || srcMode == splashModeAMono8; | |
2623 | srcAlpha = srcMode == splashModeAMono8; | |
2624 | nComps = srcAlpha ? 2 : 1; | |
2625 | break; | |
2626 | case splashModeMono8: | |
2627 | ok = srcMode == splashModeMono8 || srcMode == splashModeAMono8; | |
2628 | srcAlpha = srcMode == splashModeAMono8; | |
2629 | nComps = srcAlpha ? 2 : 1; | |
2630 | break; | |
2631 | case splashModeAMono8: | |
2632 | //~ not implemented yet | |
2633 | ok = gFalse; | |
2634 | nComps = 2; | |
2635 | break; | |
2636 | case splashModeRGB8: | |
2637 | ok = srcMode == splashModeRGB8 || srcMode == splashModeARGB8; | |
2638 | srcAlpha = srcMode == splashModeARGB8; | |
2639 | nComps = srcAlpha ? 4 : 3; | |
2640 | break; | |
2641 | case splashModeBGR8: | |
2642 | ok = srcMode == splashModeBGR8 || srcMode == splashModeBGRA8; | |
2643 | srcAlpha = srcMode == splashModeBGRA8; | |
2644 | nComps = srcAlpha ? 4 : 3; | |
2645 | break; | |
2646 | #if SPLASH_CMYK | |
2647 | case splashModeCMYK8: | |
2648 | ok = srcMode == splashModeCMYK8 || srcMode == splashModeACMYK8; | |
2649 | srcAlpha = srcMode == splashModeACMYK8; | |
2650 | nComps = srcAlpha ? 5 : 4; | |
2651 | break; | |
2652 | #endif | |
2653 | case splashModeARGB8: | |
2654 | case splashModeBGRA8: | |
2655 | #if SPLASH_CMYK | |
2656 | case splashModeACMYK8: | |
2657 | #endif | |
2658 | //~ not implemented yet | |
2659 | ok = gFalse; | |
2660 | nComps = 4; | |
2661 | break; | |
2662 | } | |
2663 | if (!ok) { | |
2664 | return splashErrModeMismatch; | |
2665 | } | |
2666 | ||
2667 | // check for singular matrix | |
2668 | if (splashAbs(mat[0] * mat[3] - mat[1] * mat[2]) < 0.000001) { | |
2669 | return splashErrSingularMatrix; | |
2670 | } | |
2671 | ||
2672 | // compute scale, shear, rotation, translation parameters | |
2673 | rot = splashAbs(mat[1]) > splashAbs(mat[0]); | |
2674 | if (rot) { | |
2675 | xScale = -mat[1]; | |
2676 | yScale = mat[2] - (mat[0] * mat[3]) / mat[1]; | |
2677 | xShear = -mat[3] / yScale; | |
2678 | yShear = -mat[0] / mat[1]; | |
2679 | } else { | |
2680 | xScale = mat[0]; | |
2681 | yScale = mat[3] - (mat[1] * mat[2]) / mat[0]; | |
2682 | xShear = mat[2] / yScale; | |
2683 | yShear = mat[1] / mat[0]; | |
2684 | } | |
2685 | // the +/-0.01 in these computations is to avoid floating point | |
2686 | // precision problems which can lead to gaps between image stripes | |
2687 | // (it can cause image stripes to overlap, but that's a much less | |
2688 | // visible problem) | |
2689 | if (xScale >= 0) { | |
2690 | tx = splashRound(mat[4] - 0.01); | |
2691 | tx2 = splashRound(mat[4] + xScale + 0.01) - 1; | |
2692 | } else { | |
2693 | tx = splashRound(mat[4] + 0.01) - 1; | |
2694 | tx2 = splashRound(mat[4] + xScale - 0.01); | |
2695 | } | |
2696 | scaledWidth = abs(tx2 - tx) + 1; | |
2697 | if (scaledWidth == 0) { | |
2698 | // technically, this should draw nothing, but it generally seems | |
2699 | // better to draw a one-pixel-wide stripe rather than throwing it | |
2700 | // away | |
2701 | scaledWidth = 1; | |
2702 | } | |
2703 | if (yScale >= 0) { | |
2704 | ty = splashRound(mat[5] - 0.01); | |
2705 | ty2 = splashRound(mat[5] + yScale + 0.01) - 1; | |
2706 | } else { | |
2707 | ty = splashRound(mat[5] + 0.01) - 1; | |
2708 | ty2 = splashRound(mat[5] + yScale - 0.01); | |
2709 | } | |
2710 | scaledHeight = abs(ty2 - ty) + 1; | |
2711 | if (scaledHeight == 0) { | |
2712 | // technically, this should draw nothing, but it generally seems | |
2713 | // better to draw a one-pixel-wide stripe rather than throwing it | |
2714 | // away | |
2715 | scaledHeight = 1; | |
2716 | } | |
2717 | xSign = (xScale < 0) ? -1 : 1; | |
2718 | ySign = (yScale < 0) ? -1 : 1; | |
2719 | yShear1 = (SplashCoord)xSign * yShear; | |
2720 | ||
2721 | // clipping | |
2722 | ulx1 = 0; | |
2723 | uly1 = 0; | |
2724 | urx1 = xSign * (scaledWidth - 1); | |
2725 | ury1 = (int)(yShear * urx1); | |
2726 | llx1 = splashRound(xShear * ySign * (scaledHeight - 1)); | |
2727 | lly1 = ySign * (scaledHeight - 1) + (int)(yShear * llx1); | |
2728 | lrx1 = xSign * (scaledWidth - 1) + | |
2729 | splashRound(xShear * ySign * (scaledHeight - 1)); | |
2730 | lry1 = ySign * (scaledHeight - 1) + (int)(yShear * lrx1); | |
2731 | if (rot) { | |
2732 | ulx = tx + uly1; uly = ty - ulx1; | |
2733 | urx = tx + ury1; ury = ty - urx1; | |
2734 | llx = tx + lly1; lly = ty - llx1; | |
2735 | lrx = tx + lry1; lry = ty - lrx1; | |
2736 | } else { | |
2737 | ulx = tx + ulx1; uly = ty + uly1; | |
2738 | urx = tx + urx1; ury = ty + ury1; | |
2739 | llx = tx + llx1; lly = ty + lly1; | |
2740 | lrx = tx + lrx1; lry = ty + lry1; | |
2741 | } | |
2742 | xMin = (ulx < urx) ? (ulx < llx) ? (ulx < lrx) ? ulx : lrx | |
2743 | : (llx < lrx) ? llx : lrx | |
2744 | : (urx < llx) ? (urx < lrx) ? urx : lrx | |
2745 | : (llx < lrx) ? llx : lrx; | |
2746 | xMax = (ulx > urx) ? (ulx > llx) ? (ulx > lrx) ? ulx : lrx | |
2747 | : (llx > lrx) ? llx : lrx | |
2748 | : (urx > llx) ? (urx > lrx) ? urx : lrx | |
2749 | : (llx > lrx) ? llx : lrx; | |
2750 | yMin = (uly < ury) ? (uly < lly) ? (uly < lry) ? uly : lry | |
2751 | : (lly < lry) ? lly : lry | |
2752 | : (ury < lly) ? (ury < lry) ? ury : lry | |
2753 | : (lly < lry) ? lly : lry; | |
2754 | yMax = (uly > ury) ? (uly > lly) ? (uly > lry) ? uly : lry | |
2755 | : (lly > lry) ? lly : lry | |
2756 | : (ury > lly) ? (ury > lry) ? ury : lry | |
2757 | : (lly > lry) ? lly : lry; | |
2758 | clipRes = state->clip->testRect(xMin, yMin, xMax, yMax); | |
2759 | opClipRes = clipRes; | |
2760 | if (clipRes == splashClipAllOutside) { | |
2761 | return splashOk; | |
2762 | } | |
2763 | ||
2764 | // compute Bresenham parameters for x and y scaling | |
2765 | yp = h / scaledHeight; | |
2766 | yq = h % scaledHeight; | |
2767 | xp = w / scaledWidth; | |
2768 | xq = w % scaledWidth; | |
2769 | ||
2770 | // allocate pixel buffer | |
2771 | pixBuf = (SplashColorPtr)gmalloc((yp + 1) * w * nComps); | |
2772 | ||
2773 | pixAcc0 = pixAcc1 = pixAcc2 = 0; // make gcc happy | |
2774 | #if SPLASH_CMYK | |
2775 | pixAcc3 = 0; // make gcc happy | |
2776 | #endif | |
2777 | ||
2778 | if (srcAlpha) { | |
2779 | ||
2780 | // init y scale Bresenham | |
2781 | yt = 0; | |
2782 | lastYStep = 1; | |
2783 | ||
2784 | for (y = 0; y < scaledHeight; ++y) { | |
2785 | ||
2786 | // y scale Bresenham | |
2787 | yStep = yp; | |
2788 | yt += yq; | |
2789 | if (yt >= scaledHeight) { | |
2790 | yt -= scaledHeight; | |
2791 | ++yStep; | |
2792 | } | |
2793 | ||
2794 | // read row(s) from image | |
2795 | n = (yp > 0) ? yStep : lastYStep; | |
2796 | if (n > 0) { | |
2797 | p = pixBuf; | |
2798 | for (i = 0; i < n; ++i) { | |
2799 | (*src)(srcData, p); | |
2800 | p += w * nComps; | |
2801 | } | |
2802 | } | |
2803 | lastYStep = yStep; | |
2804 | ||
2805 | // loop-invariant constants | |
2806 | k1 = splashRound(xShear * ySign * y); | |
2807 | ||
2808 | // clipping test | |
2809 | if (clipRes != splashClipAllInside && | |
2810 | !rot && | |
2811 | (int)(yShear * k1) == | |
2812 | (int)(yShear * (xSign * (scaledWidth - 1) + k1))) { | |
2813 | if (xSign > 0) { | |
2814 | spanXMin = tx + k1; | |
2815 | spanXMax = spanXMin + (scaledWidth - 1); | |
2816 | } else { | |
2817 | spanXMax = tx + k1; | |
2818 | spanXMin = spanXMax - (scaledWidth - 1); | |
2819 | } | |
2820 | spanY = ty + ySign * y + (int)(yShear * k1); | |
2821 | clipRes2 = state->clip->testSpan(spanXMin, spanXMax, spanY); | |
2822 | if (clipRes2 == splashClipAllOutside) { | |
2823 | continue; | |
2824 | } | |
2825 | } else { | |
2826 | clipRes2 = clipRes; | |
2827 | } | |
2828 | ||
2829 | // init x scale Bresenham | |
2830 | xt = 0; | |
2831 | xSrc = 0; | |
2832 | ||
2833 | // x shear | |
2834 | x1 = k1; | |
2835 | ||
2836 | // y shear | |
2837 | y1 = (SplashCoord)ySign * y + yShear * x1; | |
2838 | // this is a kludge: if yShear1 is negative, then (int)y1 would | |
2839 | // change immediately after the first pixel, which is not what | |
2840 | // we want | |
2841 | if (yShear1 < 0) { | |
2842 | y1 += 0.999; | |
2843 | } | |
2844 | ||
2845 | // loop-invariant constants | |
2846 | n = yStep > 0 ? yStep : 1; | |
2847 | ||
2848 | for (x = 0; x < scaledWidth; ++x) { | |
2849 | ||
2850 | // x scale Bresenham | |
2851 | xStep = xp; | |
2852 | xt += xq; | |
2853 | if (xt >= scaledWidth) { | |
2854 | xt -= scaledWidth; | |
2855 | ++xStep; | |
2856 | } | |
2857 | ||
2858 | // rotation | |
2859 | if (rot) { | |
2860 | x2 = (int)y1; | |
2861 | y2 = -x1; | |
2862 | } else { | |
2863 | x2 = x1; | |
2864 | y2 = (int)y1; | |
2865 | } | |
2866 | ||
2867 | // compute the filtered pixel at (x,y) after the x and y scaling | |
2868 | // operations | |
2869 | m = xStep > 0 ? xStep : 1; | |
2870 | alphaAcc = 0; | |
2871 | switch (srcMode) { | |
2872 | case splashModeAMono8: | |
2873 | p = pixBuf + xSrc * 2; | |
2874 | pixAcc0 = 0; | |
2875 | for (i = 0; i < n; ++i) { | |
2876 | for (j = 0; j < m; ++j) { | |
2877 | alphaAcc += *p++; | |
2878 | pixAcc0 += *p++; | |
2879 | } | |
2880 | p += 2 * (w - m); | |
2881 | } | |
2882 | break; | |
2883 | case splashModeARGB8: | |
2884 | p = pixBuf + xSrc * 4; | |
2885 | pixAcc0 = pixAcc1 = pixAcc2 = 0; | |
2886 | for (i = 0; i < n; ++i) { | |
2887 | for (j = 0; j < m; ++j) { | |
2888 | alphaAcc += *p++; | |
2889 | pixAcc0 += *p++; | |
2890 | pixAcc1 += *p++; | |
2891 | pixAcc2 += *p++; | |
2892 | } | |
2893 | p += 4 * (w - m); | |
2894 | } | |
2895 | break; | |
2896 | case splashModeBGRA8: | |
2897 | p = pixBuf + xSrc * 4; | |
2898 | pixAcc0 = pixAcc1 = pixAcc2 = 0; | |
2899 | for (i = 0; i < n; ++i) { | |
2900 | for (j = 0; j < m; ++j) { | |
2901 | pixAcc0 += *p++; | |
2902 | pixAcc1 += *p++; | |
2903 | pixAcc2 += *p++; | |
2904 | alphaAcc += *p++; | |
2905 | } | |
2906 | p += 4 * (w - m); | |
2907 | } | |
2908 | break; | |
2909 | #if SPLASH_CMYK | |
2910 | case splashModeACMYK8: | |
2911 | p = pixBuf + xSrc * 5; | |
2912 | pixAcc0 = pixAcc1 = pixAcc2 = pixAcc3 = 0; | |
2913 | for (i = 0; i < n; ++i) { | |
2914 | for (j = 0; j < m; ++j) { | |
2915 | alphaAcc += *p++; | |
2916 | pixAcc0 += *p++; | |
2917 | pixAcc1 += *p++; | |
2918 | pixAcc2 += *p++; | |
2919 | pixAcc3 += *p++; | |
2920 | } | |
2921 | p += 5 * (w - m); | |
2922 | } | |
2923 | break; | |
2924 | #endif | |
2925 | default: // make gcc happy | |
2926 | break; | |
2927 | } | |
2928 | pixMul = (SplashCoord)1 / (SplashCoord)(n * m); | |
2929 | alphaMul = pixMul * (1.0 / 256.0); | |
2930 | alpha = (SplashCoord)alphaAcc * alphaMul; | |
2931 | ||
2932 | if (alpha > 0) { | |
2933 | // mono8 -> mono1 conversion, with halftoning | |
2934 | if (halftone) { | |
2935 | pix[0] = state->screen->test(tx + x2, ty + y2, | |
2936 | (SplashCoord)pixAcc0 * pixMul * (1.0 / 256.0)); | |
2937 | ||
2938 | // no conversion, no halftoning | |
2939 | } else { | |
2940 | switch (bitmap->mode) { | |
2941 | #if SPLASH_CMYK | |
2942 | case splashModeCMYK8: | |
2943 | pix[3] = (int)((SplashCoord)pixAcc3 * pixMul); | |
2944 | // fall through | |
2945 | #endif | |
2946 | case splashModeRGB8: | |
2947 | case splashModeBGR8: | |
2948 | pix[2] = (int)((SplashCoord)pixAcc2 * pixMul); | |
2949 | pix[1] = (int)((SplashCoord)pixAcc1 * pixMul); | |
2950 | // fall through | |
2951 | case splashModeMono1: | |
2952 | case splashModeMono8: | |
2953 | pix[0] = (int)((SplashCoord)pixAcc0 * pixMul); | |
2954 | break; | |
2955 | default: // make gcc happy | |
2956 | break; | |
2957 | } | |
2958 | } | |
2959 | ||
2960 | // set pixel | |
2961 | drawPixel(tx + x2, ty + y2, pix, alpha * state->fillAlpha, | |
2962 | clipRes2 == splashClipAllInside); | |
2963 | } | |
2964 | ||
2965 | // x scale Bresenham | |
2966 | xSrc += xStep; | |
2967 | ||
2968 | // x shear | |
2969 | x1 += xSign; | |
2970 | ||
2971 | // y shear | |
2972 | y1 += yShear1; | |
2973 | } | |
2974 | } | |
2975 | ||
2976 | } else { | |
2977 | ||
2978 | // init y scale Bresenham | |
2979 | yt = 0; | |
2980 | lastYStep = 1; | |
2981 | ||
2982 | for (y = 0; y < scaledHeight; ++y) { | |
2983 | ||
2984 | // y scale Bresenham | |
2985 | yStep = yp; | |
2986 | yt += yq; | |
2987 | if (yt >= scaledHeight) { | |
2988 | yt -= scaledHeight; | |
2989 | ++yStep; | |
2990 | } | |
2991 | ||
2992 | // read row(s) from image | |
2993 | n = (yp > 0) ? yStep : lastYStep; | |
2994 | if (n > 0) { | |
2995 | p = pixBuf; | |
2996 | for (i = 0; i < n; ++i) { | |
2997 | (*src)(srcData, p); | |
2998 | p += w * nComps; | |
2999 | } | |
3000 | } | |
3001 | lastYStep = yStep; | |
3002 | ||
3003 | // loop-invariant constants | |
3004 | k1 = splashRound(xShear * ySign * y); | |
3005 | ||
3006 | // clipping test | |
3007 | if (clipRes != splashClipAllInside && | |
3008 | !rot && | |
3009 | (int)(yShear * k1) == | |
3010 | (int)(yShear * (xSign * (scaledWidth - 1) + k1))) { | |
3011 | if (xSign > 0) { | |
3012 | spanXMin = tx + k1; | |
3013 | spanXMax = spanXMin + (scaledWidth - 1); | |
3014 | } else { | |
3015 | spanXMax = tx + k1; | |
3016 | spanXMin = spanXMax - (scaledWidth - 1); | |
3017 | } | |
3018 | spanY = ty + ySign * y + (int)(yShear * k1); | |
3019 | clipRes2 = state->clip->testSpan(spanXMin, spanXMax, spanY); | |
3020 | if (clipRes2 == splashClipAllOutside) { | |
3021 | continue; | |
3022 | } | |
3023 | } else { | |
3024 | clipRes2 = clipRes; | |
3025 | } | |
3026 | ||
3027 | // init x scale Bresenham | |
3028 | xt = 0; | |
3029 | xSrc = 0; | |
3030 | ||
3031 | // x shear | |
3032 | x1 = k1; | |
3033 | ||
3034 | // y shear | |
3035 | y1 = (SplashCoord)ySign * y + yShear * x1; | |
3036 | // this is a kludge: if yShear1 is negative, then (int)y1 would | |
3037 | // change immediately after the first pixel, which is not what | |
3038 | // we want | |
3039 | if (yShear1 < 0) { | |
3040 | y1 += 0.999; | |
3041 | } | |
3042 | ||
3043 | // loop-invariant constants | |
3044 | n = yStep > 0 ? yStep : 1; | |
3045 | ||
3046 | for (x = 0; x < scaledWidth; ++x) { | |
3047 | ||
3048 | // x scale Bresenham | |
3049 | xStep = xp; | |
3050 | xt += xq; | |
3051 | if (xt >= scaledWidth) { | |
3052 | xt -= scaledWidth; | |
3053 | ++xStep; | |
3054 | } | |
3055 | ||
3056 | // rotation | |
3057 | if (rot) { | |
3058 | x2 = (int)y1; | |
3059 | y2 = -x1; | |
3060 | } else { | |
3061 | x2 = x1; | |
3062 | y2 = (int)y1; | |
3063 | } | |
3064 | ||
3065 | // compute the filtered pixel at (x,y) after the x and y scaling | |
3066 | // operations | |
3067 | m = xStep > 0 ? xStep : 1; | |
3068 | switch (srcMode) { | |
3069 | case splashModeMono1: | |
3070 | case splashModeMono8: | |
3071 | p = pixBuf + xSrc; | |
3072 | pixAcc0 = 0; | |
3073 | for (i = 0; i < n; ++i) { | |
3074 | for (j = 0; j < m; ++j) { | |
3075 | pixAcc0 += *p++; | |
3076 | } | |
3077 | p += w - m; | |
3078 | } | |
3079 | break; | |
3080 | case splashModeRGB8: | |
3081 | case splashModeBGR8: | |
3082 | p = pixBuf + xSrc * 3; | |
3083 | pixAcc0 = pixAcc1 = pixAcc2 = 0; | |
3084 | for (i = 0; i < n; ++i) { | |
3085 | for (j = 0; j < m; ++j) { | |
3086 | pixAcc0 += *p++; | |
3087 | pixAcc1 += *p++; | |
3088 | pixAcc2 += *p++; | |
3089 | } | |
3090 | p += 3 * (w - m); | |
3091 | } | |
3092 | break; | |
3093 | #if SPLASH_CMYK | |
3094 | case splashModeCMYK8: | |
3095 | p = pixBuf + xSrc * 4; | |
3096 | pixAcc0 = pixAcc1 = pixAcc2 = pixAcc3 = 0; | |
3097 | for (i = 0; i < n; ++i) { | |
3098 | for (j = 0; j < m; ++j) { | |
3099 | pixAcc0 += *p++; | |
3100 | pixAcc1 += *p++; | |
3101 | pixAcc2 += *p++; | |
3102 | pixAcc3 += *p++; | |
3103 | } | |
3104 | p += 4 * (w - m); | |
3105 | } | |
3106 | break; | |
3107 | #endif | |
3108 | default: // make gcc happy | |
3109 | break; | |
3110 | } | |
3111 | pixMul = (SplashCoord)1 / (SplashCoord)(n * m); | |
3112 | ||
3113 | // mono8 -> mono1 conversion, with halftoning | |
3114 | if (halftone) { | |
3115 | pix[0] = state->screen->test(tx + x2, ty + y2, | |
3116 | (SplashCoord)pixAcc0 * pixMul * (1.0 / 256.0)); | |
3117 | ||
3118 | // no conversion, no halftoning | |
3119 | } else { | |
3120 | switch (bitmap->mode) { | |
3121 | #if SPLASH_CMYK | |
3122 | case splashModeCMYK8: | |
3123 | pix[3] = (int)((SplashCoord)pixAcc3 * pixMul); | |
3124 | // fall through | |
3125 | #endif | |
3126 | case splashModeRGB8: | |
3127 | case splashModeBGR8: | |
3128 | pix[2] = (int)((SplashCoord)pixAcc2 * pixMul); | |
3129 | pix[1] = (int)((SplashCoord)pixAcc1 * pixMul); | |
3130 | // fall through | |
3131 | case splashModeMono1: | |
3132 | case splashModeMono8: | |
3133 | pix[0] = (int)((SplashCoord)pixAcc0 * pixMul); | |
3134 | break; | |
3135 | default: // make gcc happy | |
3136 | break; | |
3137 | } | |
3138 | } | |
3139 | ||
3140 | // set pixel | |
3141 | drawPixel(tx + x2, ty + y2, pix, state->fillAlpha, | |
3142 | clipRes2 == splashClipAllInside); | |
3143 | ||
3144 | // x scale Bresenham | |
3145 | xSrc += xStep; | |
3146 | ||
3147 | // x shear | |
3148 | x1 += xSign; | |
3149 | ||
3150 | // y shear | |
3151 | y1 += yShear1; | |
3152 | } | |
3153 | } | |
3154 | ||
3155 | } | |
3156 | ||
3157 | gfree(pixBuf); | |
3158 | ||
3159 | return splashOk; | |
3160 | } | |
3161 | ||
3162 | void Splash::dumpPath(SplashPath *path) { | |
3163 | int i; | |
3164 | ||
3165 | for (i = 0; i < path->length; ++i) { | |
3166 | printf(" %3d: x=%8.2f y=%8.2f%s%s%s%s%s\n", | |
3167 | i, (double)path->pts[i].x, (double)path->pts[i].y, | |
3168 | (path->flags[i] & splashPathFirst) ? " first" : "", | |
3169 | (path->flags[i] & splashPathLast) ? " last" : "", | |
3170 | (path->flags[i] & splashPathClosed) ? " closed" : "", | |
3171 | (path->flags[i] & splashPathCurve) ? " curve" : "", | |
3172 | (path->flags[i] & splashPathArcCW) ? " arcCW" : ""); | |
3173 | } | |
3174 | } | |
3175 | ||
3176 | void Splash::dumpXPath(SplashXPath *path) { | |
3177 | int i; | |
3178 | ||
3179 | for (i = 0; i < path->length; ++i) { | |
3180 | printf(" %4d: x0=%8.2f y0=%8.2f x1=%8.2f y1=%8.2f %s%s%s%s%s%s%s\n", | |
3181 | i, (double)path->segs[i].x0, (double)path->segs[i].y0, | |
3182 | (double)path->segs[i].x1, (double)path->segs[i].y1, | |
3183 | (path->segs[i].flags & splashXPathFirst) ? "F" : " ", | |
3184 | (path->segs[i].flags & splashXPathLast) ? "L" : " ", | |
3185 | (path->segs[i].flags & splashXPathEnd0) ? "0" : " ", | |
3186 | (path->segs[i].flags & splashXPathEnd1) ? "1" : " ", | |
3187 | (path->segs[i].flags & splashXPathHoriz) ? "H" : " ", | |
3188 | (path->segs[i].flags & splashXPathVert) ? "V" : " ", | |
3189 | (path->segs[i].flags & splashXPathFlip) ? "P" : " "); | |
3190 | } | |
3191 | } |