CairoOutputDev.cc 78.2 KB
Newer Older
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1 2 3 4 5 6 7 8
//========================================================================
//
// CairoOutputDev.cc
//
// Copyright 2003 Glyph & Cog, LLC
// Copyright 2004 Red Hat, Inc
//
//========================================================================
9 10 11 12 13

//========================================================================
//
// Modified under the Poppler project - http://poppler.freedesktop.org
//
14 15 16
// All changes made under the Poppler project to this file are licensed
// under GPL version 2 or later
//
17 18
// Copyright (C) 2005-2008 Jeff Muizelaar <jeff@infidigm.net>
// Copyright (C) 2005, 2006 Kristian Høgsberg <krh@redhat.com>
19
// Copyright (C) 2005, 2009 Albert Astals Cid <aacid@kde.org>
20
// Copyright (C) 2005 Nickolay V. Shmyrev <nshmyrev@yandex.ru>
21
// Copyright (C) 2006-2011 Carlos Garcia Campos <carlosgc@gnome.org>
22
// Copyright (C) 2008 Carl Worth <cworth@cworth.org>
Albert Astals Cid's avatar
Albert Astals Cid committed
23
// Copyright (C) 2008-2011 Adrian Johnson <ajohnson@redneon.com>
24
// Copyright (C) 2008 Michael Vrable <mvrable@cs.ucsd.edu>
Albert Astals Cid's avatar
Albert Astals Cid committed
25
// Copyright (C) 2008, 2009 Chris Wilson <chris@chris-wilson.co.uk>
26
// Copyright (C) 2008 Hib Eris <hib@hiberis.nl>
27
// Copyright (C) 2009, 2010 David Benjamin <davidben@mit.edu>
28
// Copyright (C) 2011 Thomas Freitag <Thomas.Freitag@alfa.de>
29 30 31 32 33
//
// To see a description of the changes please see the Changelog file that
// came with your tarball or type make ChangeLog if you are building from git
//
//========================================================================
Kristian Høgsberg's avatar
Kristian Høgsberg committed
34 35 36 37 38 39 40 41 42

#include <config.h>

#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif

#include <string.h>
#include <math.h>
43
#include <assert.h>
Kristian Høgsberg's avatar
Kristian Høgsberg committed
44 45 46 47 48 49
#include <cairo.h>

#include "goo/gfile.h"
#include "GlobalParams.h"
#include "Error.h"
#include "Object.h"
50
#include "Gfx.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
51 52
#include "GfxState.h"
#include "GfxFont.h"
53
#include "Page.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
54 55 56
#include "Link.h"
#include "CharCodeToUnicode.h"
#include "FontEncodingTables.h"
57
#include "PDFDocEncoding.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
58 59 60 61
#include <fofi/FoFiTrueType.h>
#include <splash/SplashBitmap.h>
#include "CairoOutputDev.h"
#include "CairoFontEngine.h"
62
#include "CairoRescaleBox.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
63 64
//------------------------------------------------------------------------

65
// #define LOG_CAIRO
Kristian Høgsberg's avatar
Kristian Høgsberg committed
66 67 68 69 70 71 72

#ifdef LOG_CAIRO
#define LOG(x) (x)
#else
#define LOG(x)
#endif

73 74 75 76 77 78
static inline void printMatrix(cairo_matrix_t *matrix){
	printf("%f %f, %f %f (%f %f)\n", matrix->xx, matrix->yx,
			matrix->xy, matrix->yy,
			matrix->x0, matrix->y0);
}

79 80 81 82
//------------------------------------------------------------------------
// CairoImage
//------------------------------------------------------------------------

83 84
CairoImage::CairoImage (double x1, double y1, double x2, double y2) {
  this->image = NULL;
85 86 87 88 89 90 91 92 93 94
  this->x1 = x1;
  this->y1 = y1;
  this->x2 = x2;
  this->y2 = y2;
}

CairoImage::~CairoImage () {
  if (image)
    cairo_surface_destroy (image);
}
Kristian Høgsberg's avatar
Kristian Høgsberg committed
95

96 97 98 99 100 101
void CairoImage::setImage (cairo_surface_t *image) {
  if (this->image)
    cairo_surface_destroy (this->image);
  this->image = cairo_surface_reference (image);
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
102 103 104 105
//------------------------------------------------------------------------
// CairoOutputDev
//------------------------------------------------------------------------

106 107 108 109 110 111 112 113 114
// We cannot tie the lifetime of an FT_Library object to that of
// CairoOutputDev, since any FT_Faces created with it may end up with a
// reference by Cairo which can be held long after the CairoOutputDev is
// deleted.  The simplest way to avoid problems is to never tear down the
// FT_Library instance; to avoid leaks, just use a single global instance
// initialized the first time it is needed.
FT_Library CairoOutputDev::ft_lib;
GBool CairoOutputDev::ft_lib_initialized = gFalse;

115
CairoOutputDev::CairoOutputDev() {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
116
  xref = NULL;
117
  catalog = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
118

119 120 121 122 123
  if (!ft_lib_initialized) {
    FT_Init_FreeType(&ft_lib);
    ft_lib_initialized = gTrue;
  }

Kristian Høgsberg's avatar
Kristian Høgsberg committed
124
  fontEngine = NULL;
125
  fontEngine_owner = gFalse;
126
  glyphs = NULL;
127
  fill_pattern = NULL;
128
  fill_color.r = fill_color.g = fill_color.b = 0;
129
  stroke_pattern = NULL;
130
  stroke_color.r = stroke_color.g = stroke_color.b = 0;
131 132
  stroke_opacity = 1.0;
  fill_opacity = 1.0;
133
  textClipPath = NULL;
134
  haveCSPattern = gFalse;
135
  cairo = NULL;
136
  currentFont = NULL;
137
  prescaleImages = gTrue;
138
  printing = gTrue;
139
  inType3Char = gFalse;
140
  t3_glyph_has_bbox = gFalse;
141 142

  groupColorSpaceStack = NULL;
143
  maskStack = NULL;
144 145
  group = NULL;
  mask = NULL;
146 147 148
  shape = NULL;
  cairo_shape = NULL;
  knockoutCount = 0;
149 150

  text = NULL;
151
  actualText = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
152 153 154
}

CairoOutputDev::~CairoOutputDev() {
155
  if (fontEngine_owner && fontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
156 157
    delete fontEngine;
  }
158

159 160
  if (cairo)
    cairo_destroy (cairo);
161 162
  cairo_pattern_destroy (stroke_pattern);
  cairo_pattern_destroy (fill_pattern);
163 164
  if (group)
    cairo_pattern_destroy (group);
Chris Wilson's avatar
Chris Wilson committed
165 166
  if (mask)
    cairo_pattern_destroy (mask);
167 168
  if (shape)
    cairo_pattern_destroy (shape);
169
  if (text) 
170 171 172
    text->decRefCnt();
  if (actualText)
    delete actualText;  
173
}
Kristian Høgsberg's avatar
Kristian Høgsberg committed
174

175
void CairoOutputDev::setCairo(cairo_t *cairo)
176
{
177 178 179 180 181
  if (this->cairo != NULL) {
    cairo_status_t status = cairo_status (this->cairo);
    if (status) {
      warning("cairo context error: %s\n", cairo_status_to_string(status));
    }
182
    cairo_destroy (this->cairo);
183
    assert(!cairo_shape);
184
  }
185
  if (cairo != NULL) {
186
    this->cairo = cairo_reference (cairo);
187 188 189 190
	/* save the initial matrix so that we can use it for type3 fonts. */
	//XXX: is this sufficient? could we miss changes to the matrix somehow?
	cairo_get_matrix(cairo, &orig_matrix);
  } else {
191
    this->cairo = NULL;
192
    this->cairo_shape = NULL;
193
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
194 195
}

196 197 198 199
void CairoOutputDev::setTextPage(TextPage *text)
{
  if (this->text) 
    this->text->decRefCnt();
200 201
  if (actualText)
    delete actualText;
202 203 204
  if (text) {
    this->text = text;
    this->text->incRefCnt();
205
    actualText = new ActualText(text);
206 207
  } else {
    this->text = NULL;
208
    actualText = NULL;
209 210 211
  }
}

212 213
void CairoOutputDev::startDoc(XRef *xrefA, Catalog *catalogA,
			      CairoFontEngine *parentFontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
214
  xref = xrefA;
215
  catalog = catalogA;
216 217 218 219 220 221 222 223
  if (parentFontEngine) {
    fontEngine = parentFontEngine;
  } else {
    if (fontEngine) {
      delete fontEngine;
    }
    fontEngine = new CairoFontEngine(ft_lib);
    fontEngine_owner = gTrue;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
224 225 226
  }
}

227 228 229 230
void CairoOutputDev::startPage(int pageNum, GfxState *state) {
  /* set up some per page defaults */
  cairo_pattern_destroy(fill_pattern);
  cairo_pattern_destroy(stroke_pattern);
231 232 233

  fill_pattern = cairo_pattern_create_rgb(0., 0., 0.);
  stroke_pattern = cairo_pattern_reference(fill_pattern);
234 235 236 237 238 239 240 241 242 243

  if (text)
    text->startPage(state);
}

void CairoOutputDev::endPage() {
  if (text) {
    text->endPage();
    text->coalesce(gTrue, gFalse);
  }
244 245
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
246 247 248
void CairoOutputDev::saveState(GfxState *state) {
  LOG(printf ("save\n"));
  cairo_save (cairo);
249 250
  if (cairo_shape)
      cairo_save (cairo_shape);
251 252 253 254 255

  MaskStack *ms = new MaskStack;
  ms->mask = cairo_pattern_reference(mask);
  ms->next = maskStack;
  maskStack = ms;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
256 257 258 259 260
}

void CairoOutputDev::restoreState(GfxState *state) {
  LOG(printf ("restore\n"));
  cairo_restore (cairo);
261 262
  if (cairo_shape)
      cairo_restore (cairo_shape);
263 264 265 266 267 268 269

  /* These aren't restored by cairo_restore() since we keep them in
   * the output device. */
  updateFillColor(state);
  updateStrokeColor(state);
  updateFillOpacity(state);
  updateStrokeOpacity(state);
270
  updateBlendMode(state);
271 272

  MaskStack* ms = maskStack;
273
  if (ms) {
274 275
    if (mask)
      cairo_pattern_destroy(mask);
276 277 278 279
    mask = ms->mask;
    maskStack = ms->next;
    delete ms;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
280 281 282 283 284 285 286 287 288 289 290
}

void CairoOutputDev::updateAll(GfxState *state) {
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
  updateFlatness(state);
  updateMiterLimit(state);
  updateFillColor(state);
  updateStrokeColor(state);
291 292
  updateFillOpacity(state);
  updateStrokeOpacity(state);
293
  updateBlendMode(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
294
  needFontUpdate = gTrue;
295 296
  if (text)
    text->updateFont(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
297 298
}

299 300 301 302 303 304 305 306 307
void CairoOutputDev::setDefaultCTM(double *ctm) {
  cairo_matrix_t matrix;
  matrix.xx = ctm[0];
  matrix.yx = ctm[1];
  matrix.xy = ctm[2];
  matrix.yy = ctm[3];
  matrix.x0 = ctm[4];
  matrix.y0 = ctm[5];

308
  cairo_transform (cairo, &matrix);
309
  if (cairo_shape)
310
      cairo_transform (cairo_shape, &matrix);
311 312 313 314

  OutputDev::setDefaultCTM(ctm);
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
315 316 317
void CairoOutputDev::updateCTM(GfxState *state, double m11, double m12,
				double m21, double m22,
				double m31, double m32) {
318
  cairo_matrix_t matrix, invert_matrix;
319 320 321 322 323 324 325
  matrix.xx = m11;
  matrix.yx = m12;
  matrix.xy = m21;
  matrix.yy = m22;
  matrix.x0 = m31;
  matrix.y0 = m32;

326 327 328 329 330 331 332 333
  /* Make sure the matrix is invertible before setting it.
   * cairo will blow up if we give it a matrix that's not
   * invertible, so we need to check before passing it
   * to cairo_transform. Ignoring it is likely to give better
   * results than not rendering anything at all. See #14398
   *
   * Ideally, we could do the cairo_transform
   * and then check if anything went wrong and fix it then
334 335 336
   * instead of having to invert the matrix. */
  invert_matrix = matrix;
  if (cairo_matrix_invert(&invert_matrix)) {
337 338 339 340
    warning("matrix not invertible\n");
    return;
  }

341
  cairo_transform (cairo, &matrix);
342 343
  if (cairo_shape)
    cairo_transform (cairo_shape, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
344 345 346 347 348 349 350 351 352 353 354 355
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
}

void CairoOutputDev::updateLineDash(GfxState *state) {
  double *dashPattern;
  int dashLength;
  double dashStart;

  state->getLineDash(&dashPattern, &dashLength, &dashStart);
356
  cairo_set_dash (cairo, dashPattern, dashLength, dashStart);
357 358
  if (cairo_shape)
    cairo_set_dash (cairo_shape, dashPattern, dashLength, dashStart);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
359 360 361
}

void CairoOutputDev::updateFlatness(GfxState *state) {
362
  // cairo_set_tolerance (cairo, state->getFlatness());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
363 364 365 366 367 368 369 370 371 372 373 374 375 376
}

void CairoOutputDev::updateLineJoin(GfxState *state) {
  switch (state->getLineJoin()) {
  case 0:
    cairo_set_line_join (cairo, CAIRO_LINE_JOIN_MITER);
    break;
  case 1:
    cairo_set_line_join (cairo, CAIRO_LINE_JOIN_ROUND);
    break;
  case 2:
    cairo_set_line_join (cairo, CAIRO_LINE_JOIN_BEVEL);
    break;
  }
377 378
  if (cairo_shape)
    cairo_set_line_join (cairo_shape, cairo_get_line_join(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
379 380 381 382 383 384 385 386 387 388 389 390 391 392
}

void CairoOutputDev::updateLineCap(GfxState *state) {
  switch (state->getLineCap()) {
  case 0:
    cairo_set_line_cap (cairo, CAIRO_LINE_CAP_BUTT);
    break;
  case 1:
    cairo_set_line_cap (cairo, CAIRO_LINE_CAP_ROUND);
    break;
  case 2:
    cairo_set_line_cap (cairo, CAIRO_LINE_CAP_SQUARE);
    break;
  }
393 394
  if (cairo_shape)
    cairo_set_line_cap (cairo_shape, cairo_get_line_cap(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
395 396 397 398
}

void CairoOutputDev::updateMiterLimit(GfxState *state) {
  cairo_set_miter_limit (cairo, state->getMiterLimit());
399 400
  if (cairo_shape)
    cairo_set_miter_limit (cairo_shape, state->getMiterLimit());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
401 402
}

403
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
404

Kristian Høgsberg's avatar
Kristian Høgsberg committed
405
void CairoOutputDev::updateLineWidth(GfxState *state) {
406 407
  LOG(printf ("line width: %f\n", state->getLineWidth()));
  if (state->getLineWidth() == 0.0) {
408 409 410 411 412
    /* find out how big pixels (device unit) are in the x and y directions
     * choose the smaller of the two as our line width */
    double x = 1.0, y = 1.0;
    cairo_device_to_user_distance(cairo, &x, &y);
    cairo_set_line_width (cairo, MIN(fabs(x),fabs(y)));
413
  } else {
414
    cairo_set_line_width (cairo, state->getLineWidth());
415
  }
416 417
  if (cairo_shape)
    cairo_set_line_width (cairo_shape, cairo_get_line_width (cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
418 419 420
}

void CairoOutputDev::updateFillColor(GfxState *state) {
421
  GfxRGB color = fill_color;
422

423 424 425 426 427 428
  state->getFillRGB(&fill_color);
  if (color.r != fill_color.r ||
      color.g != fill_color.g ||
      color.b != fill_color.b)
  {
    cairo_pattern_destroy(fill_pattern);
429 430 431
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
432 433 434 435 436
					     fill_opacity);

    LOG(printf ("fill color: %d %d %d\n",
		fill_color.r, fill_color.g, fill_color.b));
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
437 438 439
}

void CairoOutputDev::updateStrokeColor(GfxState *state) {
440
  GfxRGB color = stroke_color;
441

442 443 444 445 446 447
  state->getStrokeRGB(&stroke_color);
  if (color.r != stroke_color.r ||
      color.g != stroke_color.g ||
      color.b != stroke_color.b)
  {
    cairo_pattern_destroy(stroke_pattern);
448 449 450
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
451 452 453 454 455
					       stroke_opacity);

    LOG(printf ("stroke color: %d %d %d\n",
		stroke_color.r, stroke_color.g, stroke_color.b));
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
456 457
}

458
void CairoOutputDev::updateFillOpacity(GfxState *state) {
459
  double opacity = fill_opacity;
460

461 462 463
  fill_opacity = state->getFillOpacity();
  if (opacity != fill_opacity) {
    cairo_pattern_destroy(fill_pattern);
464 465 466
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
467 468 469 470
					     fill_opacity);

    LOG(printf ("fill opacity: %f\n", fill_opacity));
  }
471 472 473
}

void CairoOutputDev::updateStrokeOpacity(GfxState *state) {
474
  double opacity = stroke_opacity;
475

476 477 478
  stroke_opacity = state->getStrokeOpacity();
  if (opacity != stroke_opacity) {
    cairo_pattern_destroy(stroke_pattern);
479 480 481
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
482 483 484 485
					       stroke_opacity);

    LOG(printf ("stroke opacity: %f\n", stroke_opacity));
  }
486 487
}

488 489 490 491
void CairoOutputDev::updateFillColorStop(GfxState *state, double offset) {
  state->getFillRGB(&fill_color);

  cairo_pattern_add_color_stop_rgba(fill_pattern, offset,
492 493 494
				    colToDbl(fill_color.r),
				    colToDbl(fill_color.g),
				    colToDbl(fill_color.b),
495 496 497 498 499
				    fill_opacity);
  LOG(printf ("fill color stop: %f (%d, %d, %d)\n",
	      offset, fill_color.r, fill_color.g, fill_color.b));
}

500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554
void CairoOutputDev::updateBlendMode(GfxState *state) {
  switch (state->getBlendMode()) {
  default:
  case gfxBlendNormal:
    cairo_set_operator (cairo, CAIRO_OPERATOR_OVER);
    break;
  case gfxBlendMultiply:
    cairo_set_operator (cairo, CAIRO_OPERATOR_MULTIPLY);
    break;
  case gfxBlendScreen:
    cairo_set_operator (cairo, CAIRO_OPERATOR_SCREEN);
    break;
  case gfxBlendOverlay:
    cairo_set_operator (cairo, CAIRO_OPERATOR_OVERLAY);
    break;
  case gfxBlendDarken:
    cairo_set_operator (cairo, CAIRO_OPERATOR_DARKEN);
    break;
  case gfxBlendLighten:
    cairo_set_operator (cairo, CAIRO_OPERATOR_LIGHTEN);
    break;
  case gfxBlendColorDodge:
    cairo_set_operator (cairo, CAIRO_OPERATOR_COLOR_DODGE);
    break;
  case gfxBlendColorBurn:
    cairo_set_operator (cairo, CAIRO_OPERATOR_COLOR_BURN);
    break;
  case gfxBlendHardLight:
    cairo_set_operator (cairo, CAIRO_OPERATOR_HARD_LIGHT);
    break;
  case gfxBlendSoftLight:
    cairo_set_operator (cairo, CAIRO_OPERATOR_SOFT_LIGHT);
    break;
  case gfxBlendDifference:
    cairo_set_operator (cairo, CAIRO_OPERATOR_DIFFERENCE);
    break;
  case gfxBlendExclusion:
    cairo_set_operator (cairo, CAIRO_OPERATOR_EXCLUSION);
    break;
  case gfxBlendHue:
    cairo_set_operator (cairo, CAIRO_OPERATOR_HSL_HUE);
    break;
  case gfxBlendSaturation:
    cairo_set_operator (cairo, CAIRO_OPERATOR_HSL_SATURATION);
    break;
  case gfxBlendColor:
    cairo_set_operator (cairo, CAIRO_OPERATOR_HSL_COLOR);
    break;
  case gfxBlendLuminosity:
    cairo_set_operator (cairo, CAIRO_OPERATOR_HSL_LUMINOSITY);
    break;
  }
  LOG(printf ("blend mode: %d\n", (int)state->getBlendMode()));
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
555
void CairoOutputDev::updateFont(GfxState *state) {
556
  cairo_font_face_t *font_face;
557
  cairo_matrix_t matrix, invert_matrix;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
558 559

  LOG(printf ("updateFont() font=%s\n", state->getFont()->getName()->getCString()));
560

Kristian Høgsberg's avatar
Kristian Høgsberg committed
561 562
  needFontUpdate = gFalse;

563 564 565 566
  //FIXME: use cairo font engine?
  if (text)
    text->updateFont(state);
  
567
  currentFont = fontEngine->getFont (state->getFont(), xref, catalog, printing);
568

569 570
  if (!currentFont)
    return;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
571

572 573
  font_face = currentFont->getFontFace();
  cairo_set_font_face (cairo, font_face);
574 575 576
 
  double fontSize = state->getFontSize();
  double *m = state->getTextMat();
577 578 579 580 581 582
  /* NOTE: adjusting by a constant is hack. The correct solution
   * is probably to use user-fonts and compute the scale on a per
   * glyph basis instead of for the entire font */
  double w = currentFont->getSubstitutionCorrection(state->getFont());
  matrix.xx = m[0] * fontSize * state->getHorizScaling() * w;
  matrix.yx = m[1] * fontSize * state->getHorizScaling() * w;
583 584
  matrix.xy = -m[2] * fontSize;
  matrix.yy = -m[3] * fontSize;
585 586
  matrix.x0 = 0;
  matrix.y0 = 0;
587

588 589
  LOG(printf ("font matrix: %f %f %f %f\n", matrix.xx, matrix.yx, matrix.xy, matrix.yy));

590 591 592 593 594 595 596 597 598 599 600 601
 /* Make sure the font matrix is invertible before setting it.  cairo
  * will blow up if we give it a matrix that's not invertible, so we
  * need to check before passing it to cairo_set_font_matrix. Ignoring it
  * is likely to give better results than not rendering anything at
  * all. See #18254.
  */
  invert_matrix = matrix;
  if (cairo_matrix_invert(&invert_matrix)) {
    warning("font matrix not invertible\n");
    return;
  }

602
  cairo_set_font_matrix (cairo, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
603 604
}

605
void CairoOutputDev::doPath(cairo_t *cairo, GfxState *state, GfxPath *path) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
606 607
  GfxSubpath *subpath;
  int i, j;
608
  cairo_new_path (cairo);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
609 610 611
  for (i = 0; i < path->getNumSubpaths(); ++i) {
    subpath = path->getSubpath(i);
    if (subpath->getNumPoints() > 0) {
612 613
      cairo_move_to (cairo, subpath->getX(0), subpath->getY(0));
         j = 1;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
614 615
      while (j < subpath->getNumPoints()) {
	if (subpath->getCurve(j)) {
616 617 618 619 620
	  cairo_curve_to( cairo,
			  subpath->getX(j), subpath->getY(j),
			  subpath->getX(j+1), subpath->getY(j+1),
			  subpath->getX(j+2), subpath->getY(j+2));

Kristian Høgsberg's avatar
Kristian Høgsberg committed
621 622
	  j += 3;
	} else {
623
	  cairo_line_to (cairo, subpath->getX(j), subpath->getY(j));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
624 625 626 627 628 629 630 631 632 633 634 635
	  ++j;
	}
      }
      if (subpath->isClosed()) {
	LOG (printf ("close\n"));
	cairo_close_path (cairo);
      }
    }
  }
}

void CairoOutputDev::stroke(GfxState *state) {
636 637 638 639 640 641 642
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

643
  doPath (cairo, state, state->getPath());
644
  cairo_set_source (cairo, stroke_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
645 646
  LOG(printf ("stroke\n"));
  cairo_stroke (cairo);
647 648 649 650
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_stroke (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
651 652 653
}

void CairoOutputDev::fill(GfxState *state) {
654 655 656 657 658 659 660
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

661
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
662
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
663
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
664
  LOG(printf ("fill\n"));
665
  //XXX: how do we get the path
666 667 668 669 670 671
  if (mask) {
    cairo_clip (cairo);
    cairo_mask (cairo, mask);
  } else {
    cairo_fill (cairo);
  }
672 673 674 675 676
  if (cairo_shape) {
    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_WINDING);
    doPath (cairo_shape, state, state->getPath());
    cairo_fill (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
677 678 679
}

void CairoOutputDev::eoFill(GfxState *state) {
680
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
681
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
682
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
683 684
  LOG(printf ("fill-eo\n"));
  cairo_fill (cairo);
685 686 687 688 689 690 691

  if (cairo_shape) {
    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_EVEN_ODD);
    doPath (cairo_shape, state, state->getPath());
    cairo_fill (cairo_shape);
  }

Kristian Høgsberg's avatar
Kristian Høgsberg committed
692 693
}

694 695
GBool CairoOutputDev::tilingPatternFill(GfxState *state, Catalog *cat, Object *str,
					double *pmat, int paintType, Dict *resDict,
696 697 698 699 700 701 702 703 704 705 706
					double *mat, double *bbox,
					int x0, int y0, int x1, int y1,
					double xStep, double yStep)
{
  PDFRectangle box;
  Gfx *gfx;
  cairo_pattern_t *pattern;
  cairo_surface_t *surface;
  cairo_matrix_t matrix;
  cairo_t *old_cairo;
  double xMin, yMin, xMax, yMax;
707
  double width, height;
708
  int surface_width, surface_height;
709

710 711 712 713
  width = bbox[2] - bbox[0];
  height = bbox[3] - bbox[1];

  if (xStep != width || yStep != height)
714 715 716
    return gFalse;
  /* TODO: implement the other cases here too */

717 718 719
  surface_width = (int) ceil (width);
  surface_height = (int) ceil (height);

720 721
  surface = cairo_surface_create_similar (cairo_get_target (cairo),
					  CAIRO_CONTENT_COLOR_ALPHA,
722
					  surface_width, surface_height);
723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744
  if (cairo_surface_status (surface))
    return gFalse;

  old_cairo = cairo;
  cairo = cairo_create (surface);
  cairo_surface_destroy (surface);

  box.x1 = bbox[0]; box.y1 = bbox[1];
  box.x2 = bbox[2]; box.y2 = bbox[3];
  gfx = new Gfx(xref, this, resDict, catalog, &box, NULL);
  gfx->display(str);
  delete gfx;

  pattern = cairo_pattern_create_for_surface (cairo_get_target (cairo));
  cairo_destroy (cairo);
  cairo = old_cairo;
  if (cairo_pattern_status (pattern))
    return gFalse;

  state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax);
  cairo_rectangle (cairo, xMin, yMin, xMax - xMin, yMax - yMin);

745
  cairo_matrix_init_scale (&matrix, surface_width / width, surface_height / height);
746 747
  cairo_pattern_set_matrix (pattern, &matrix);

748 749 750 751 752 753 754 755 756 757 758
  cairo_matrix_init (&matrix, mat[0], mat[1], mat[2], mat[3], mat[4], mat[5]);
  cairo_transform (cairo, &matrix);
  cairo_set_source (cairo, pattern);
  cairo_pattern_set_extend (pattern, CAIRO_EXTEND_REPEAT);
  cairo_fill (cairo);

  cairo_pattern_destroy (pattern);

  return gTrue;
}

759 760 761 762 763 764 765 766 767 768 769
GBool CairoOutputDev::axialShadedFill(GfxState *state, GfxAxialShading *shading, double tMin, double tMax) {
  double x0, y0, x1, y1;
  double dx, dy;

  shading->getCoords(&x0, &y0, &x1, &y1);
  dx = x1 - x0;
  dy = y1 - y0;

  cairo_pattern_destroy(fill_pattern);
  fill_pattern = cairo_pattern_create_linear (x0 + tMin * dx, y0 + tMin * dy,
					      x0 + tMax * dx, y0 + tMax * dy);
770 771 772 773
  if (!shading->getExtend0() && !shading->getExtend1())
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);
  else
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
774

775 776
  LOG (printf ("axial-sh\n"));

777 778 779 780 781
  // TODO: use the actual stops in the shading in the case
  // of linear interpolation (Type 2 Exponential functions with N=1)
  return gFalse;
}

782 783 784 785 786
GBool CairoOutputDev::axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading)
{
  return (shading->getExtend0() == shading->getExtend1());
}

787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806
GBool CairoOutputDev::radialShadedFill(GfxState *state, GfxRadialShading *shading, double sMin, double sMax) {
  double x0, y0, r0, x1, y1, r1;
  double dx, dy, dr;

  shading->getCoords(&x0, &y0, &r0, &x1, &y1, &r1);
  dx = x1 - x0;
  dy = y1 - y0;
  dr = r1 - r0;
  cairo_pattern_destroy(fill_pattern);
  fill_pattern = cairo_pattern_create_radial (x0 + sMin * dx,
					      y0 + sMin * dy,
					      r0 + sMin * dr,
					      x0 + sMax * dx,
					      y0 + sMax * dy,
					      r0 + sMax * dr);
  if (shading->getExtend0() && shading->getExtend1())
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
  else
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);

807 808
  LOG (printf ("radial-sh\n"));

809 810 811 812 813 814 815 816
  return gFalse;
}

GBool CairoOutputDev::radialShadedSupportExtend(GfxState *state, GfxRadialShading *shading)
{
  return (shading->getExtend0() == shading->getExtend1());
}

817
#if CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2)
818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953
GBool CairoOutputDev::gouraudTriangleShadedFill(GfxState *state, GfxGouraudTriangleShading *shading)
{
  double x0, y0, x1, y1, x2, y2;
  GfxColor color[3];
  int i, j;
  GfxRGB rgb;

  cairo_pattern_destroy(fill_pattern);
  fill_pattern = cairo_pattern_create_mesh ();

  for (i = 0; i < shading->getNTriangles(); i++) {
    shading->getTriangle(i,
			 &x0, &y0, &color[0],
			 &x1, &y1, &color[1],
			 &x2, &y2, &color[2]);

    cairo_pattern_mesh_begin_patch (fill_pattern);

    cairo_pattern_mesh_move_to (fill_pattern, x0, y0);
    cairo_pattern_mesh_line_to (fill_pattern, x1, y1);
    cairo_pattern_mesh_line_to (fill_pattern, x2, y2);

    for (j = 0; j < 3; j++) {
	shading->getColorSpace()->getRGB(&color[j], &rgb);
	cairo_pattern_mesh_set_corner_color_rgb (fill_pattern, j,
						 colToDbl(rgb.r),
						 colToDbl(rgb.g),
						 colToDbl(rgb.b));
    }

    cairo_pattern_mesh_end_patch (fill_pattern);
  }

  double xMin, yMin, xMax, yMax;
  // get the clip region bbox
  state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax);
  state->moveTo(xMin, yMin);
  state->lineTo(xMin, yMax);
  state->lineTo(xMax, yMax);
  state->lineTo(xMax, yMin);
  state->closePath();
  fill(state);
  state->clearPath();

  return gTrue;
}

GBool CairoOutputDev::patchMeshShadedFill(GfxState *state, GfxPatchMeshShading *shading)
{
  int i, j, k;

  cairo_pattern_destroy(fill_pattern);
  fill_pattern = cairo_pattern_create_mesh ();

  for (i = 0; i < shading->getNPatches(); i++) {
    GfxPatch *patch = shading->getPatch(i);
    GfxColor color;
    GfxRGB rgb;

    cairo_pattern_mesh_begin_patch (fill_pattern);

    cairo_pattern_mesh_move_to (fill_pattern, patch->x[0][0], patch->y[0][0]);
    cairo_pattern_mesh_curve_to (fill_pattern,
			    patch->x[0][1], patch->y[0][1],
			    patch->x[0][2], patch->y[0][2],
			    patch->x[0][3], patch->y[0][3]);

    cairo_pattern_mesh_curve_to (fill_pattern,
			    patch->x[1][3], patch->y[1][3],
			    patch->x[2][3], patch->y[2][3],
			    patch->x[3][3], patch->y[3][3]);

    cairo_pattern_mesh_curve_to (fill_pattern,
			    patch->x[3][2], patch->y[3][2],
			    patch->x[3][1], patch->y[3][1],
			    patch->x[3][0], patch->y[3][0]);

    cairo_pattern_mesh_curve_to (fill_pattern,
			    patch->x[2][0], patch->y[2][0],
			    patch->x[1][0], patch->y[1][0],
			    patch->x[0][0], patch->y[0][0]);

    cairo_pattern_mesh_set_control_point (fill_pattern, 0, patch->x[1][1], patch->y[1][1]);
    cairo_pattern_mesh_set_control_point (fill_pattern, 1, patch->x[1][2], patch->y[1][2]);
    cairo_pattern_mesh_set_control_point (fill_pattern, 2, patch->x[2][2], patch->y[2][2]);
    cairo_pattern_mesh_set_control_point (fill_pattern, 3, patch->x[2][1], patch->y[2][1]);

    for (j = 0; j < 4; j++) {
      int u, v;

      switch (j) {
	case 0:
	  u = 0; v = 0;
	  break;
	case 1:
	  u = 0; v = 1;
	  break;
	case 2:
	  u = 1; v = 1;
	  break;
	case 3:
	  u = 1; v = 0;
	  break;
      }

      if (shading->isParameterized()) {
	shading->getParameterizedColor (patch->color[u][v].c[0], &color);
      } else {
	for (k = 0; k < shading->getColorSpace()->getNComps(); k++) {
          // simply cast to the desired type; that's all what is needed.
	  color.c[k] = GfxColorComp (patch->color[u][v].c[k]);
	}
      }

      shading->getColorSpace()->getRGB(&color, &rgb);
      cairo_pattern_mesh_set_corner_color_rgb (fill_pattern, j,
					       colToDbl(rgb.r),
					       colToDbl(rgb.g),
					       colToDbl(rgb.b));
    }
    cairo_pattern_mesh_end_patch (fill_pattern);
  }

  double xMin, yMin, xMax, yMax;
  // get the clip region bbox
  state->getUserClipBBox(&xMin, &yMin, &xMax, &yMax);
  state->moveTo(xMin, yMin);
  state->lineTo(xMin, yMax);
  state->lineTo(xMax, yMax);
  state->lineTo(xMax, yMin);
  state->closePath();
  fill(state);
  state->clearPath();

  return gTrue;
}
954
#endif /* CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2) */
955

956
void CairoOutputDev::clip(GfxState *state) {
957
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
958 959 960
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
  cairo_clip (cairo);
  LOG (printf ("clip\n"));
961 962 963 964 965
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_WINDING);
    cairo_clip (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
966 967 968
}

void CairoOutputDev::eoClip(GfxState *state) {
969
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
970 971 972
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
  cairo_clip (cairo);
  LOG (printf ("clip-eo\n"));
973 974 975 976 977 978
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_EVEN_ODD);
    cairo_clip (cairo_shape);
  }

Kristian Høgsberg's avatar
Kristian Høgsberg committed
979 980
}

981 982 983 984
void CairoOutputDev::clipToStrokePath(GfxState *state) {
  LOG(printf("clip-to-stroke-path\n"));
}

985
void CairoOutputDev::beginString(GfxState *state, GooString *s)
986 987
{
  int len = s->getLength();
988

989 990 991
  if (needFontUpdate)
    updateFont(state);

992 993 994
  if (!currentFont)
    return;

995
  glyphs = (cairo_glyph_t *) gmallocn (len, sizeof (cairo_glyph_t));
996 997 998 999 1000 1001
  glyphCount = 0;
}

void CairoOutputDev::drawChar(GfxState *state, double x, double y,
			      double dx, double dy,
			      double originX, double originY,
1002
			      CharCode code, int nBytes, Unicode *u, int uLen)
1003
{
1004 1005 1006 1007 1008 1009 1010 1011
  if (currentFont) {
    glyphs[glyphCount].index = currentFont->getGlyph (code, u, uLen);
    glyphs[glyphCount].x = x - originX;
    glyphs[glyphCount].y = y - originY;
    glyphCount++;
  }

  if (!text)
1012
    return;
1013
  actualText->addChar (state, x, y, dx, dy, code, nBytes, u, uLen);
1014 1015 1016 1017 1018 1019 1020
}

void CairoOutputDev::endString(GfxState *state)
{
  int render;

  if (!currentFont)
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1021
    return;
1022 1023 1024 1025 1026 1027 1028

  // endString can be called without a corresponding beginString. If this
  // happens glyphs will be null so don't draw anything, just return.
  // XXX: OutputDevs should probably not have to deal with this...
  if (!glyphs)
    return;

1029 1030
  // ignore empty strings and invisible text -- this is used by
  // Acrobat Capture
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1031
  render = state->getRender();
1032
  if (render == 3 || glyphCount == 0) {
1033 1034
    gfree(glyphs);
    glyphs = NULL;
1035
    return;
1036
  }
1037
  
1038
  if (!(render & 1) && !haveCSPattern) {
1039
    LOG (printf ("fill string\n"));
1040
    cairo_set_source (cairo, fill_pattern);
1041
    cairo_show_glyphs (cairo, glyphs, glyphCount);
1042 1043
    if (cairo_shape)
      cairo_show_glyphs (cairo_shape, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1044
  }
1045
  
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1046 1047
  // stroke
  if ((render & 3) == 1 || (render & 3) == 2) {
1048
    LOG (printf ("stroke string\n"));
1049
    cairo_set_source (cairo, stroke_pattern);
1050
    cairo_glyph_path (cairo, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1051
    cairo_stroke (cairo);
1052 1053 1054 1055
    if (cairo_shape) {
      cairo_glyph_path (cairo_shape, glyphs, glyphCount);
      cairo_stroke (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1056 1057 1058
  }

  // clip
1059
  if (haveCSPattern || (render & 4)) {
1060
    LOG (printf ("clip string\n"));
1061 1062 1063 1064 1065
    // append the glyph path to textClipPath.

    // set textClipPath as the currentPath
    if (textClipPath) {
      cairo_append_path (cairo, textClipPath);
1066 1067 1068
      if (cairo_shape) {
	cairo_append_path (cairo_shape, textClipPath);
      }
1069 1070 1071 1072
      cairo_path_destroy (textClipPath);
    }
    
    // append the glyph path
1073
    cairo_glyph_path (cairo, glyphs, glyphCount);
1074 1075 1076 1077 1078
   
    // move the path back into textClipPath 
    // and clear the current path
    textClipPath = cairo_copy_path (cairo);
    cairo_new_path (cairo);
1079 1080 1081
    if (cairo_shape) {
      cairo_new_path (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1082
  }
1083

1084
  gfree (glyphs);
1085
  glyphs = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1086 1087
}

1088

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1089 1090 1091
GBool CairoOutputDev::beginType3Char(GfxState *state, double x, double y,
				      double dx, double dy,
				      CharCode code, Unicode *u, int uLen) {
1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103

  cairo_save (cairo);
  double *ctm;
  cairo_matrix_t matrix;

  ctm = state->getCTM();
  matrix.xx = ctm[0];
  matrix.yx = ctm[1];
  matrix.xy = ctm[2];
  matrix.yy = ctm[3];
  matrix.x0 = ctm[4];
  matrix.y0 = ctm[5];
1104 1105 1106 1107
  /* Restore the original matrix and then transform to matrix needed for the
   * type3 font. This is ugly but seems to work. Perhaps there is a better way to do it?*/
  cairo_set_matrix(cairo, &orig_matrix);
  cairo_transform(cairo, &matrix);
1108 1109 1110 1111 1112
  if (cairo_shape) {
    cairo_save (cairo_shape);
    cairo_set_matrix(cairo_shape, &orig_matrix);
    cairo_transform(cairo_shape, &matrix);
  }
1113 1114
  cairo_pattern_destroy(stroke_pattern);
  cairo_pattern_reference(fill_pattern);
1115
  stroke_pattern = fill_pattern;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1116 1117 1118 1119
  return gFalse;
}

void CairoOutputDev::endType3Char(GfxState *state) {
1120
  cairo_restore (cairo);
1121 1122 1123
  if (cairo_shape) {
    cairo_restore (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1124 1125 1126
}

void CairoOutputDev::type3D0(GfxState *state, double wx, double wy) {
1127 1128
  t3_glyph_wx = wx;
  t3_glyph_wy = wy;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1129 1130 1131
}

void CairoOutputDev::type3D1(GfxState *state, double wx, double wy,
1132
			     double llx, double lly, double urx, double ury) {
1133 1134 1135 1136 1137 1138 1139
  t3_glyph_wx = wx;
  t3_glyph_wy = wy;
  t3_glyph_bbox[0] = llx;
  t3_glyph_bbox[1] = lly;
  t3_glyph_bbox[2] = urx;
  t3_glyph_bbox[3] = ury;
  t3_glyph_has_bbox = gTrue;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1140 1141
}

1142
void CairoOutputDev::beginTextObject(GfxState *state) {
1143
  if (!(state->getRender() & 4) && state->getFillColorSpace()->getMode() == csPattern) {
1144 1145 1146 1147 1148
    haveCSPattern = gTrue;
    saveState(state);
  }
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1149
void CairoOutputDev::endTextObject(GfxState *state) {
1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172
  if (haveCSPattern) {
    haveCSPattern = gFalse;
    if (state->getFillColorSpace()->getMode() != csPattern) {
      if (textClipPath) {
	cairo_new_path (cairo);
	cairo_append_path (cairo, textClipPath);
	cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
	cairo_set_source (cairo, fill_pattern);
	cairo_fill (cairo);
	if (cairo_shape) {
	  cairo_new_path (cairo_shape);
	  cairo_append_path (cairo_shape, textClipPath);
	  cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_WINDING);
	  cairo_fill (cairo_shape);
	}
	cairo_path_destroy (textClipPath);
	textClipPath = NULL;
      }
      restoreState(state);
      updateFillColor(state);
    }
  }

1173 1174 1175 1176
  if (textClipPath) {
    // clip the accumulated text path
    cairo_append_path (cairo, textClipPath);
    cairo_clip (cairo);
1177 1178 1179 1180
    if (cairo_shape) {
      cairo_append_path (cairo_shape, textClipPath);
      cairo_clip (cairo_shape);
    }
1181 1182 1183
    cairo_path_destroy (textClipPath);
    textClipPath = NULL;
  }
1184
}
1185

1186 1187
void CairoOutputDev::beginMarkedContent(char *name, Dict *properties)
{
1188 1189
  if (text)
    actualText->beginMC(properties);
1190 1191 1192 1193
}

void CairoOutputDev::endMarkedContent(GfxState *state)
{
1194 1195
  if (text)
    actualText->endMC(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1196 1197
}

1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209
static inline int splashRound(SplashCoord x) {
  return (int)floor(x + 0.5);
}

static inline int splashCeil(SplashCoord x) {
  return (int)ceil(x);
}

static inline int splashFloor(SplashCoord x) {
  return (int)floor(x);
}

1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239
static
cairo_surface_t *cairo_surface_create_similar_clip (cairo_t *cairo, cairo_content_t content)
{
  double x1, y1, x2, y2;
  int width, height;
  cairo_clip_extents (cairo, &x1, &y1, &x2, &y2);
  cairo_matrix_t matrix;
  cairo_get_matrix (cairo, &matrix);
  //cairo_matrix_transform_point(&matrix, &x1, &y1);
  //cairo_matrix_transform_point(&matrix, &x2, &y2);*/
  cairo_user_to_device(cairo, &x1, &y1);
  cairo_user_to_device(cairo, &x2, &y2);
  width = splashCeil(x2) - splashFloor(x1);
  //XXX: negative matrix
  ////height = splashCeil(y2) - splashFloor(y1);
  height = splashFloor(y1) - splashCeil(y2);
  cairo_surface_t *target = cairo_get_target (cairo);
  cairo_surface_t *result;

  result = cairo_surface_create_similar (target, content, width, height);
  double x_offset, y_offset;
    cairo_surface_get_device_offset(target, &x_offset, &y_offset);
    cairo_surface_set_device_offset(result, x_offset, y_offset);

 
  return result;
}



1240 1241
void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
                                      GfxColorSpace * blendingColorSpace,
1242
                                      GBool /*isolated*/, GBool knockout,
1243 1244 1245 1246
				      GBool forSoftMask) {
  /* push color space */
  ColorSpaceStack* css = new ColorSpaceStack;
  css->cs = blendingColorSpace;
1247
  css->knockout = knockout;
1248 1249
  css->next = groupColorSpaceStack;
  groupColorSpaceStack = css;
1250 1251 1252

  LOG(printf ("begin transparency group. knockout: %s\n", knockout ? "yes":"no"));

1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274
  if (knockout) {
    knockoutCount++;
    if (!cairo_shape) {
      /* create a surface for tracking the shape */
      cairo_surface_t *cairo_shape_surface = cairo_surface_create_similar_clip (cairo, CAIRO_CONTENT_ALPHA);
      cairo_shape = cairo_create (cairo_shape_surface);
      cairo_surface_destroy (cairo_shape_surface);

      /* the color doesn't matter as long as it is opaque */
      cairo_set_source_rgb (cairo_shape, 0, 0, 0);
      cairo_matrix_t matrix;
      cairo_get_matrix (cairo, &matrix);
      //printMatrix(&matrix);
      cairo_set_matrix (cairo_shape, &matrix);
    } else {
      cairo_reference (cairo_shape);
    }
  }
  if (groupColorSpaceStack->next && groupColorSpaceStack->next->knockout) {
    /* we need to track the shape */
    cairo_push_group (cairo_shape);
  }
1275 1276 1277 1278
  if (0 && forSoftMask)
    cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
  else
    cairo_push_group (cairo);
1279 1280 1281 1282 1283 1284 1285 1286

  /* push_group has an implicit cairo_save() */
  if (knockout) {
    /*XXX: let's hope this matches the semantics needed */
    cairo_set_operator(cairo, CAIRO_OPERATOR_SOURCE);
  } else {
    cairo_set_operator(cairo, CAIRO_OPERATOR_OVER);
  }
1287
}
1288

1289 1290 1291 1292
void CairoOutputDev::endTransparencyGroup(GfxState * /*state*/) {
  if (group)
    cairo_pattern_destroy(group);
  group = cairo_pop_group (cairo);
1293

1294 1295
  LOG(printf ("end transparency group\n"));

1296 1297 1298 1299 1300
  if (groupColorSpaceStack->next && groupColorSpaceStack->next->knockout) {
    if (shape)
      cairo_pattern_destroy(shape);
    shape = cairo_pop_group (cairo_shape);
  }
1301
}
1302

1303 1304 1305
void CairoOutputDev::paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) {
  cairo_set_source (cairo, group);

1306 1307
  LOG(printf ("paint transparency group\n"));

1308
  if (!mask) {
1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335
    //XXX: deal with mask && shape case
    if (shape) {
      cairo_save (cairo);

      /* OPERATOR_SOURCE w/ a mask is defined as (src IN mask) ADD (dest OUT mask)
       * however our source has already been clipped to mask so we only need to
       * do ADD and OUT */

      /* clear the shape mask */
      cairo_set_source (cairo, shape);
      cairo_set_operator (cairo, CAIRO_OPERATOR_DEST_OUT);
      cairo_paint (cairo);

      cairo_set_operator (cairo, CAIRO_OPERATOR_ADD);
      cairo_set_source (cairo, group);
      cairo_paint (cairo);

      cairo_restore (cairo);

      cairo_pattern_destroy (shape);
      shape = NULL;
    } else {
      cairo_paint_with_alpha (cairo, fill_opacity);
    }
    cairo_status_t status = cairo_status(cairo);
    if (status)
      printf("BAD status: %s\n", cairo_status_to_string(status));
1336 1337 1338 1339 1340 1341 1342
  } else {
    cairo_mask(cairo, mask);

    cairo_pattern_destroy(mask);
    mask = NULL;
  }

1343
  popTransparencyGroup();
1344 1345 1346 1347 1348 1349 1350 1351 1352
}

typedef unsigned int uint32_t;

static uint32_t luminocity(uint32_t x)
{
  int r = (x >> 16) & 0xff;
  int g = (x >>  8) & 0xff;
  int b = (x >>  0) & 0xff;
1353 1354
  // an arbitrary integer approximation of .3*r + .59*g + .11*b
  int y = (r*19661+g*38666+b*7209 + 32829)>>16;
1355 1356 1357 1358
  return y << 24;
}


1359
/* XXX: do we need to deal with shape here? */
1360 1361
void CairoOutputDev::setSoftMask(GfxState * state, double * bbox, GBool alpha,
                                 Function * transferFunc, GfxColor * backdropColor) {
Chris Wilson's avatar
Chris Wilson committed
1362 1363
  cairo_pattern_destroy(mask);

1364 1365
  LOG(printf ("set softMask\n"));

1366 1367 1368 1369 1370
  if (alpha == false) {
    /* We need to mask according to the luminocity of the group.
     * So we paint the group to an image surface convert it to a luminocity map
     * and then use that as the mask. */

1371
    double x1, y1, x2, y2, tmp;
1372
    cairo_clip_extents(cairo, &x1, &y1, &x2, &y2);
1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386
    cairo_user_to_device(cairo, &x1, &y1);
    cairo_user_to_device(cairo, &x2, &y2);
    if (x1 > x2) {
      tmp = x1;
      x1 = x2;
      x2 = tmp;
    }

    if (y1 > y2) {
      tmp = y1;
      y1 = y2;
      y2 = tmp;
    }

1387 1388
    int width = (int)(ceil(x2) - floor(x1));
    int height = (int)(ceil(y2) - floor(y1));
1389 1390 1391 1392 1393 1394 1395 1396

    cairo_surface_t *source = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
    cairo_t *maskCtx = cairo_create(source);

    //XXX: hopefully this uses the correct color space */
    GfxRGB backdropColorRGB;
    groupColorSpaceStack->cs->getRGB(backdropColor, &backdropColorRGB);
    /* paint the backdrop */
1397 1398 1399 1400
    cairo_set_source_rgb(maskCtx,
			 colToDbl(backdropColorRGB.r),
			 colToDbl(backdropColorRGB.g),
			 colToDbl(backdropColorRGB.b));