CairoOutputDev.cc 79.4 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"
63
#include "UTF8.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
64 65
//------------------------------------------------------------------------

66
// #define LOG_CAIRO
Kristian Høgsberg's avatar
Kristian Høgsberg committed
67 68 69 70 71 72 73

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

74 75 76 77 78 79
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);
}

80 81 82 83
//------------------------------------------------------------------------
// CairoImage
//------------------------------------------------------------------------

84 85
CairoImage::CairoImage (double x1, double y1, double x2, double y2) {
  this->image = NULL;
86 87 88 89 90 91 92 93 94 95
  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
96

97 98 99 100 101 102
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
103 104 105 106
//------------------------------------------------------------------------
// CairoOutputDev
//------------------------------------------------------------------------

107 108 109 110 111 112 113 114 115
// 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;

116
CairoOutputDev::CairoOutputDev() {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
117
  xref = NULL;
118
  catalog = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
119

120 121 122 123 124
  if (!ft_lib_initialized) {
    FT_Init_FreeType(&ft_lib);
    ft_lib_initialized = gTrue;
  }

Kristian Høgsberg's avatar
Kristian Høgsberg committed
125
  fontEngine = NULL;
126
  fontEngine_owner = gFalse;
127
  glyphs = NULL;
128
  fill_pattern = NULL;
129
  fill_color.r = fill_color.g = fill_color.b = 0;
130
  stroke_pattern = NULL;
131
  stroke_color.r = stroke_color.g = stroke_color.b = 0;
132 133
  stroke_opacity = 1.0;
  fill_opacity = 1.0;
134
  textClipPath = NULL;
135
  haveCSPattern = gFalse;
136
  cairo = NULL;
137
  currentFont = NULL;
138
  prescaleImages = gTrue;
139
  printing = gTrue;
140
  inType3Char = gFalse;
141
  t3_glyph_has_bbox = gFalse;
142 143

  groupColorSpaceStack = NULL;
144
  maskStack = NULL;
145 146
  group = NULL;
  mask = NULL;
147 148 149
  shape = NULL;
  cairo_shape = NULL;
  knockoutCount = 0;
150 151

  text = NULL;
152
  actualText = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
153 154 155
}

CairoOutputDev::~CairoOutputDev() {
156
  if (fontEngine_owner && fontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
157 158
    delete fontEngine;
  }
159

160 161
  if (cairo)
    cairo_destroy (cairo);
162 163
  cairo_pattern_destroy (stroke_pattern);
  cairo_pattern_destroy (fill_pattern);
164 165
  if (group)
    cairo_pattern_destroy (group);
Chris Wilson's avatar
Chris Wilson committed
166 167
  if (mask)
    cairo_pattern_destroy (mask);
168 169
  if (shape)
    cairo_pattern_destroy (shape);
170
  if (text) 
171 172 173
    text->decRefCnt();
  if (actualText)
    delete actualText;  
174
}
Kristian Høgsberg's avatar
Kristian Høgsberg committed
175

176
void CairoOutputDev::setCairo(cairo_t *cairo)
177
{
178 179 180 181 182
  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));
    }
183
    cairo_destroy (this->cairo);
184
    assert(!cairo_shape);
185
  }
186
  if (cairo != NULL) {
187
    this->cairo = cairo_reference (cairo);
188 189 190 191
	/* 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 {
192
    this->cairo = NULL;
193
    this->cairo_shape = NULL;
194
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
195 196
}

197 198 199 200
void CairoOutputDev::setTextPage(TextPage *text)
{
  if (this->text) 
    this->text->decRefCnt();
201 202
  if (actualText)
    delete actualText;
203 204 205
  if (text) {
    this->text = text;
    this->text->incRefCnt();
206
    actualText = new ActualText(text);
207 208
  } else {
    this->text = NULL;
209
    actualText = NULL;
210 211 212
  }
}

213 214
void CairoOutputDev::startDoc(XRef *xrefA, Catalog *catalogA,
			      CairoFontEngine *parentFontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
215
  xref = xrefA;
216
  catalog = catalogA;
217 218 219 220 221 222 223 224
  if (parentFontEngine) {
    fontEngine = parentFontEngine;
  } else {
    if (fontEngine) {
      delete fontEngine;
    }
    fontEngine = new CairoFontEngine(ft_lib);
    fontEngine_owner = gTrue;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
225 226 227
  }
}

228 229 230 231
void CairoOutputDev::startPage(int pageNum, GfxState *state) {
  /* set up some per page defaults */
  cairo_pattern_destroy(fill_pattern);
  cairo_pattern_destroy(stroke_pattern);
232 233 234

  fill_pattern = cairo_pattern_create_rgb(0., 0., 0.);
  stroke_pattern = cairo_pattern_reference(fill_pattern);
235 236 237 238 239 240 241 242 243 244

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

void CairoOutputDev::endPage() {
  if (text) {
    text->endPage();
    text->coalesce(gTrue, gFalse);
  }
245 246
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
247 248 249
void CairoOutputDev::saveState(GfxState *state) {
  LOG(printf ("save\n"));
  cairo_save (cairo);
250 251
  if (cairo_shape)
      cairo_save (cairo_shape);
252 253 254 255 256

  MaskStack *ms = new MaskStack;
  ms->mask = cairo_pattern_reference(mask);
  ms->next = maskStack;
  maskStack = ms;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
257 258 259 260 261
}

void CairoOutputDev::restoreState(GfxState *state) {
  LOG(printf ("restore\n"));
  cairo_restore (cairo);
262 263
  if (cairo_shape)
      cairo_restore (cairo_shape);
264 265 266 267 268 269 270

  /* These aren't restored by cairo_restore() since we keep them in
   * the output device. */
  updateFillColor(state);
  updateStrokeColor(state);
  updateFillOpacity(state);
  updateStrokeOpacity(state);
271
  updateBlendMode(state);
272 273

  MaskStack* ms = maskStack;
274
  if (ms) {
275 276
    if (mask)
      cairo_pattern_destroy(mask);
277 278 279 280
    mask = ms->mask;
    maskStack = ms->next;
    delete ms;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
281 282 283 284 285 286 287 288 289 290 291
}

void CairoOutputDev::updateAll(GfxState *state) {
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
  updateFlatness(state);
  updateMiterLimit(state);
  updateFillColor(state);
  updateStrokeColor(state);
292 293
  updateFillOpacity(state);
  updateStrokeOpacity(state);
294
  updateBlendMode(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
295
  needFontUpdate = gTrue;
296 297
  if (text)
    text->updateFont(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
298 299
}

300 301 302 303 304 305 306 307 308
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];

309
  cairo_transform (cairo, &matrix);
310
  if (cairo_shape)
311
      cairo_transform (cairo_shape, &matrix);
312 313 314 315

  OutputDev::setDefaultCTM(ctm);
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
316 317 318
void CairoOutputDev::updateCTM(GfxState *state, double m11, double m12,
				double m21, double m22,
				double m31, double m32) {
319
  cairo_matrix_t matrix, invert_matrix;
320 321 322 323 324 325 326
  matrix.xx = m11;
  matrix.yx = m12;
  matrix.xy = m21;
  matrix.yy = m22;
  matrix.x0 = m31;
  matrix.y0 = m32;

327 328 329 330 331 332 333 334
  /* 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
335 336 337
   * instead of having to invert the matrix. */
  invert_matrix = matrix;
  if (cairo_matrix_invert(&invert_matrix)) {
338 339 340 341
    warning("matrix not invertible\n");
    return;
  }

342
  cairo_transform (cairo, &matrix);
343 344
  if (cairo_shape)
    cairo_transform (cairo_shape, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
345 346 347 348 349 350 351 352 353 354 355 356
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
}

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

  state->getLineDash(&dashPattern, &dashLength, &dashStart);
357
  cairo_set_dash (cairo, dashPattern, dashLength, dashStart);
358 359
  if (cairo_shape)
    cairo_set_dash (cairo_shape, dashPattern, dashLength, dashStart);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
360 361 362
}

void CairoOutputDev::updateFlatness(GfxState *state) {
363
  // cairo_set_tolerance (cairo, state->getFlatness());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
364 365 366 367 368 369 370 371 372 373 374 375 376 377
}

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;
  }
378 379
  if (cairo_shape)
    cairo_set_line_join (cairo_shape, cairo_get_line_join(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
380 381 382 383 384 385 386 387 388 389 390 391 392 393
}

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;
  }
394 395
  if (cairo_shape)
    cairo_set_line_cap (cairo_shape, cairo_get_line_cap(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
396 397 398 399
}

void CairoOutputDev::updateMiterLimit(GfxState *state) {
  cairo_set_miter_limit (cairo, state->getMiterLimit());
400 401
  if (cairo_shape)
    cairo_set_miter_limit (cairo_shape, state->getMiterLimit());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
402 403
}

404
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
405

Kristian Høgsberg's avatar
Kristian Høgsberg committed
406
void CairoOutputDev::updateLineWidth(GfxState *state) {
407 408
  LOG(printf ("line width: %f\n", state->getLineWidth()));
  if (state->getLineWidth() == 0.0) {
409 410 411
    /* 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;
412 413 414 415 416
    if (printing) {
      // assume printer pixel size is 1/600 inch
      x = 72.0/600;
      y = 72.0/600;
    }
417 418
    cairo_device_to_user_distance(cairo, &x, &y);
    cairo_set_line_width (cairo, MIN(fabs(x),fabs(y)));
419
  } else {
420
    cairo_set_line_width (cairo, state->getLineWidth());
421
  }
422 423
  if (cairo_shape)
    cairo_set_line_width (cairo_shape, cairo_get_line_width (cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
424 425 426
}

void CairoOutputDev::updateFillColor(GfxState *state) {
427
  GfxRGB color = fill_color;
428

429 430 431 432 433 434
  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);
435 436 437
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
438 439 440 441 442
					     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
443 444 445
}

void CairoOutputDev::updateStrokeColor(GfxState *state) {
446
  GfxRGB color = stroke_color;
447

448 449 450 451 452 453
  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);
454 455 456
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
457 458 459 460 461
					       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
462 463
}

464
void CairoOutputDev::updateFillOpacity(GfxState *state) {
465
  double opacity = fill_opacity;
466

467 468 469
  fill_opacity = state->getFillOpacity();
  if (opacity != fill_opacity) {
    cairo_pattern_destroy(fill_pattern);
470 471 472
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
473 474 475 476
					     fill_opacity);

    LOG(printf ("fill opacity: %f\n", fill_opacity));
  }
477 478 479
}

void CairoOutputDev::updateStrokeOpacity(GfxState *state) {
480
  double opacity = stroke_opacity;
481

482 483 484
  stroke_opacity = state->getStrokeOpacity();
  if (opacity != stroke_opacity) {
    cairo_pattern_destroy(stroke_pattern);
485 486 487
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
488 489 490 491
					       stroke_opacity);

    LOG(printf ("stroke opacity: %f\n", stroke_opacity));
  }
492 493
}

494 495 496 497
void CairoOutputDev::updateFillColorStop(GfxState *state, double offset) {
  state->getFillRGB(&fill_color);

  cairo_pattern_add_color_stop_rgba(fill_pattern, offset,
498 499 500
				    colToDbl(fill_color.r),
				    colToDbl(fill_color.g),
				    colToDbl(fill_color.b),
501 502 503 504 505
				    fill_opacity);
  LOG(printf ("fill color stop: %f (%d, %d, %d)\n",
	      offset, fill_color.r, fill_color.g, fill_color.b));
}

506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560
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
561
void CairoOutputDev::updateFont(GfxState *state) {
562
  cairo_font_face_t *font_face;
563
  cairo_matrix_t matrix, invert_matrix;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
564 565

  LOG(printf ("updateFont() font=%s\n", state->getFont()->getName()->getCString()));
566

Kristian Høgsberg's avatar
Kristian Høgsberg committed
567 568
  needFontUpdate = gFalse;

569 570 571 572
  //FIXME: use cairo font engine?
  if (text)
    text->updateFont(state);
  
573
  currentFont = fontEngine->getFont (state->getFont(), xref, catalog, printing);
574

575 576
  if (!currentFont)
    return;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
577

578 579
  font_face = currentFont->getFontFace();
  cairo_set_font_face (cairo, font_face);
580 581 582
 
  double fontSize = state->getFontSize();
  double *m = state->getTextMat();
583 584 585 586 587 588
  /* 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;
589 590
  matrix.xy = -m[2] * fontSize;
  matrix.yy = -m[3] * fontSize;
591 592
  matrix.x0 = 0;
  matrix.y0 = 0;
593

594 595
  LOG(printf ("font matrix: %f %f %f %f\n", matrix.xx, matrix.yx, matrix.xy, matrix.yy));

596 597 598 599 600 601 602 603 604 605 606 607
 /* 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;
  }

608
  cairo_set_font_matrix (cairo, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
609 610
}

611
void CairoOutputDev::doPath(cairo_t *cairo, GfxState *state, GfxPath *path) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
612 613
  GfxSubpath *subpath;
  int i, j;
614
  cairo_new_path (cairo);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
615 616 617
  for (i = 0; i < path->getNumSubpaths(); ++i) {
    subpath = path->getSubpath(i);
    if (subpath->getNumPoints() > 0) {
618 619
      cairo_move_to (cairo, subpath->getX(0), subpath->getY(0));
         j = 1;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
620 621
      while (j < subpath->getNumPoints()) {
	if (subpath->getCurve(j)) {
622 623 624 625 626
	  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
627 628
	  j += 3;
	} else {
629
	  cairo_line_to (cairo, subpath->getX(j), subpath->getY(j));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
630 631 632 633 634 635 636 637 638 639 640 641
	  ++j;
	}
      }
      if (subpath->isClosed()) {
	LOG (printf ("close\n"));
	cairo_close_path (cairo);
      }
    }
  }
}

void CairoOutputDev::stroke(GfxState *state) {
642 643 644 645 646 647 648
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

649
  doPath (cairo, state, state->getPath());
650
  cairo_set_source (cairo, stroke_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
651 652
  LOG(printf ("stroke\n"));
  cairo_stroke (cairo);
653 654 655 656
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_stroke (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
657 658 659
}

void CairoOutputDev::fill(GfxState *state) {
660 661 662 663 664 665 666
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

667
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
668
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
669
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
670
  LOG(printf ("fill\n"));
671
  //XXX: how do we get the path
672 673 674 675 676 677
  if (mask) {
    cairo_clip (cairo);
    cairo_mask (cairo, mask);
  } else {
    cairo_fill (cairo);
  }
678 679 680 681 682
  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
683 684 685
}

void CairoOutputDev::eoFill(GfxState *state) {
686
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
687
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
688
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
689 690
  LOG(printf ("fill-eo\n"));
  cairo_fill (cairo);
691 692 693 694 695 696 697

  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
698 699
}

700
GBool CairoOutputDev::tilingPatternFill(GfxState *state, Catalog *cat, Object *str,
701
					double *pmat, int paintType, int /*tilingType*/, Dict *resDict,
702 703 704 705 706 707 708 709 710 711 712
					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;
713
  double width, height;
714
  int surface_width, surface_height;
715

716 717 718 719
  width = bbox[2] - bbox[0];
  height = bbox[3] - bbox[1];

  if (xStep != width || yStep != height)
720 721 722
    return gFalse;
  /* TODO: implement the other cases here too */

723 724 725
  surface_width = (int) ceil (width);
  surface_height = (int) ceil (height);

726 727
  surface = cairo_surface_create_similar (cairo_get_target (cairo),
					  CAIRO_CONTENT_COLOR_ALPHA,
728
					  surface_width, surface_height);
729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750
  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);

751
  cairo_matrix_init_scale (&matrix, surface_width / width, surface_height / height);
752 753
  cairo_pattern_set_matrix (pattern, &matrix);

754 755 756 757 758 759 760 761 762 763 764
  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;
}

765 766 767 768 769 770 771 772 773 774 775
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);
776 777 778 779
  if (!shading->getExtend0() && !shading->getExtend1())
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);
  else
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
780

781 782
  LOG (printf ("axial-sh\n"));

783 784 785 786 787
  // TODO: use the actual stops in the shading in the case
  // of linear interpolation (Type 2 Exponential functions with N=1)
  return gFalse;
}

788 789 790 791 792
GBool CairoOutputDev::axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading)
{
  return (shading->getExtend0() == shading->getExtend1());
}

793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812
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);

813 814
  LOG (printf ("radial-sh\n"));

815 816 817 818 819 820 821 822
  return gFalse;
}

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

823
#if CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2)
824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959
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;
}
960
#endif /* CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2) */
961

962
void CairoOutputDev::clip(GfxState *state) {
963
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
964 965 966
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
  cairo_clip (cairo);
  LOG (printf ("clip\n"));
967 968 969 970 971
  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
972 973 974
}

void CairoOutputDev::eoClip(GfxState *state) {
975
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
976 977 978
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
  cairo_clip (cairo);
  LOG (printf ("clip-eo\n"));
979 980 981 982 983 984
  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
985 986
}

987 988 989 990
void CairoOutputDev::clipToStrokePath(GfxState *state) {
  LOG(printf("clip-to-stroke-path\n"));
}

991
void CairoOutputDev::beginString(GfxState *state, GooString *s)
992 993
{
  int len = s->getLength();
994

995 996 997
  if (needFontUpdate)
    updateFont(state);

998 999 1000
  if (!currentFont)
    return;

1001
  glyphs = (cairo_glyph_t *) gmallocn (len, sizeof (cairo_glyph_t));
1002
  glyphCount = 0;
1003 1004 1005 1006 1007 1008 1009
  if (printing) {
    clusters = (cairo_text_cluster_t *) gmallocn (len, sizeof (cairo_text_cluster_t));
    clusterCount = 0;
    utf8Max = len*2; // start with twice the number of glyphs. we will realloc if we need more.
    utf8 = (char *) gmalloc (utf8Max);
    utf8Count = 0;
  }
1010 1011 1012 1013 1014
}

void CairoOutputDev::drawChar(GfxState *state, double x, double y,
			      double dx, double dy,
			      double originX, double originY,
1015
			      CharCode code, int nBytes, Unicode *u, int uLen)
1016
{
1017 1018 1019 1020 1021
  if (currentFont) {
    glyphs[glyphCount].index = currentFont->getGlyph (code, u, uLen);
    glyphs[glyphCount].x = x - originX;
    glyphs[glyphCount].y = y - originY;
    glyphCount++;
1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039
    if (printing) {
      if (utf8Max - utf8Count < uLen*6) {
        // utf8 encoded characters can be up to 6 bytes
	if (utf8Max > uLen*6)
	  utf8Max *= 2;
	else
	  utf8Max += 2*uLen*6;
	utf8 = (char *) grealloc (utf8, utf8Max);
      }
      clusters[clusterCount].num_bytes = 0;
      for (int i = 0; i < uLen; i++) {
	int size = mapUTF8 (u[i], utf8 + utf8Count, utf8Max - utf8Count);
	utf8Count += size;
	clusters[clusterCount].num_bytes += size;
      }
      clusters[clusterCount].num_glyphs = 1;
      clusterCount++;
    }
1040 1041 1042
  }

  if (!text)
1043
    return;
1044
  actualText->addChar (state, x, y, dx, dy, code, nBytes, u, uLen);
1045 1046 1047 1048 1049 1050 1051
}

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

  if (!currentFont)
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1052
    return;
1053 1054 1055 1056 1057 1058 1059

  // 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;

1060 1061
  // ignore empty strings and invisible text -- this is used by
  // Acrobat Capture
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1062
  render = state->getRender();
1063
  if (render == 3 || glyphCount == 0) {
1064 1065
    gfree(glyphs);
    glyphs = NULL;
1066
    return;
1067
  }
1068

1069
  if (!(render & 1) && !haveCSPattern) {
1070
    LOG (printf ("fill string\n"));
1071
    cairo_set_source (cairo, fill_pattern);
1072 1073 1074 1075
    if (printing)
      cairo_show_text_glyphs (cairo, utf8, utf8Count, glyphs, glyphCount, clusters, clusterCount, (cairo_text_cluster_flags_t)0);
    else
        cairo_show_glyphs (cairo, glyphs, glyphCount);
1076 1077
    if (cairo_shape)
      cairo_show_glyphs (cairo_shape, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1078
  }
1079

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1080 1081
  // stroke
  if ((render & 3) == 1 || (render & 3) == 2) {
1082
    LOG (printf ("stroke string\n"));
1083
    cairo_set_source (cairo, stroke_pattern);
1084
    cairo_glyph_path (cairo, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1085
    cairo_stroke (cairo);
1086 1087 1088 1089
    if (cairo_shape) {
      cairo_glyph_path (cairo_shape, glyphs, glyphCount);
      cairo_stroke (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1090 1091 1092
  }

  // clip
1093
  if (haveCSPattern || (render & 4)) {
1094
    LOG (printf ("clip string\n"));
1095 1096 1097 1098 1099
    // append the glyph path to textClipPath.

    // set textClipPath as the currentPath
    if (textClipPath) {
      cairo_append_path (cairo, textClipPath);
1100 1101 1102
      if (cairo_shape) {
	cairo_append_path (cairo_shape, textClipPath);
      }
1103 1104 1105 1106
      cairo_path_destroy (textClipPath);
    }
    
    // append the glyph path
1107
    cairo_glyph_path (cairo, glyphs, glyphCount);
1108 1109 1110 1111 1112
   
    // move the path back into textClipPath 
    // and clear the current path
    textClipPath = cairo_copy_path (cairo);
    cairo_new_path (cairo);
1113 1114 1115
    if (cairo_shape) {
      cairo_new_path (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1116
  }
1117

1118
  gfree (glyphs);
1119
  glyphs = NULL;
1120 1121 1122 1123 1124 1125
  if (printing) {
    gfree (clusters);
    clusters = NULL;
    gfree (utf8);
    utf8 = NULL;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1126 1127
}

1128

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1129 1130 1131
GBool CairoOutputDev::beginType3Char(GfxState *state, double x, double y,
				      double dx, double dy,
				      CharCode code, Unicode *u, int uLen) {
1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143

  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];
1144 1145 1146 1147
  /* 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);
1148 1149 1150 1151 1152
  if (cairo_shape) {
    cairo_save (cairo_shape);
    cairo_set_matrix(cairo_shape, &orig_matrix);
    cairo_transform(cairo_shape, &matrix);
  }
1153 1154
  cairo_pattern_destroy(stroke_pattern);
  cairo_pattern_reference(fill_pattern);
1155
  stroke_pattern = fill_pattern;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1156 1157 1158 1159
  return gFalse;
}

void CairoOutputDev::endType3Char(GfxState *state) {
1160
  cairo_restore (cairo);
1161 1162 1163
  if (cairo_shape) {
    cairo_restore (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1164 1165 1166
}

void CairoOutputDev::type3D0(GfxState *state, double wx, double wy) {
1167 1168
  t3_glyph_wx = wx;
  t3_glyph_wy = wy;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1169 1170 1171
}

void CairoOutputDev::type3D1(GfxState *state, double wx, double wy,
1172
			     double llx, double lly, double urx, double ury) {
1173 1174 1175 1176 1177 1178 1179
  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
1180 1181
}

1182
void CairoOutputDev::beginTextObject(GfxState *state) {
1183
  if (!(state->getRender() & 4) && state->getFillColorSpace()->getMode() == csPattern) {
1184 1185 1186 1187 1188
    haveCSPattern = gTrue;
    saveState(state);
  }
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1189
void CairoOutputDev::endTextObject(GfxState *state) {
1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212
  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);
    }
  }

1213 1214 1215 1216
  if (textClipPath) {
    // clip the accumulated text path
    cairo_append_path (cairo, textClipPath);
    cairo_clip (cairo);
1217 1218 1219 1220
    if (cairo_shape) {
      cairo_append_path (cairo_shape, textClipPath);
      cairo_clip (cairo_shape);
    }
1221 1222 1223
    cairo_path_destroy (textClipPath);
    textClipPath = NULL;
  }
1224
}
1225

1226 1227
void CairoOutputDev::beginMarkedContent(char *name, Dict *properties)
{
1228 1229
  if (text)
    actualText->beginMC(properties);
1230 1231 1232 1233
}

void CairoOutputDev::endMarkedContent(GfxState *state)
{
1234 1235
  if (text)
    actualText->endMC(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1236 1237
}

1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249
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);
}

1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
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;
}



1280 1281
void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
                                      GfxColorSpace * blendingColorSpace,
1282
                                      GBool /*isolated*/, GBool knockout,
1283 1284 1285 1286
				      GBool forSoftMask) {
  /* push color space */
  ColorSpaceStack* css = new ColorSpaceStack;
  css->cs = blendingColorSpace;
1287
  css->knockout = knockout;
1288 1289
  css->next = groupColorSpaceStack;
  groupColorSpaceStack = css;
1290 1291 1292

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

1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
  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);
  }
1315 1316 1317 1318
  if (0 && forSoftMask)
    cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
  else
    cairo_push_group (cairo);
1319 1320 1321 1322 1323 1324 1325 1326

  /* 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);
  }
1327
}
1328

1329 1330 1331 1332
void CairoOutputDev::endTransparencyGroup(GfxState * /*state*/) {
  if (group)
    cairo_pattern_destroy(group);
  group = cairo_pop_group (cairo);
1333

1334 1335
  LOG(printf ("end transparency group\n"));

1336 1337 1338 1339 1340
  if (groupColorSpaceStack->next && groupColorSpaceStack->next->knockout) {
    if (shape)
      cairo_pattern_destroy(shape);
    shape = cairo_pop_group (cairo_shape);
  }
1341
}
1342

1343 1344 1345
void CairoOutputDev::paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) {
  cairo_set_source (cairo, group);

1346 1347
  LOG(printf ("paint transparency group\n"));

1348
  if (!mask) {
1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375
    //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));
1376 1377 1378 1379 1380 1381 1382
  } else {
    cairo_mask(cairo, mask);

    cairo_pattern_destroy(mask);
    mask = NULL;
  }

1383
  popTransparencyGroup();
1384 1385 1386 1387 1388 1389 1390
}

static uint32_t luminocity(uint32_t x)
{
  int r = (x >> 16) & 0xff;
  int g = (x >>  8) & 0xff;
  int b = (x >>  0) & 0xff;
1391 1392
  // an arbitrary integer approximation of .3*r + .59*g + .11*b
  int y = (r*19661+g*38666+b*7209 + 32829)>>16;
1393 1394 1395 1396
  return y << 24;
}


1397
/* XXX: do we need to deal with shape here? */
1398 1399
void CairoOutputDev::setSoftMask(GfxState * state, double * bbox, GBool alpha,
                                 Function * transferFunc, GfxColor * backdropColor) {