CairoOutputDev.cc 81.5 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
#include <cairo.h>

#include "goo/gfile.h"
47
#include "goo/gtypes_p.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
48 49 50
#include "GlobalParams.h"
#include "Error.h"
#include "Object.h"
51
#include "Gfx.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
52 53
#include "GfxState.h"
#include "GfxFont.h"
54
#include "Page.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
55 56 57
#include "Link.h"
#include "CharCodeToUnicode.h"
#include "FontEncodingTables.h"
58
#include "PDFDocEncoding.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
59 60 61 62
#include <fofi/FoFiTrueType.h>
#include <splash/SplashBitmap.h>
#include "CairoOutputDev.h"
#include "CairoFontEngine.h"
63
#include "CairoRescaleBox.h"
64
#include "UTF8.h"
Kristian Høgsberg's avatar
Kristian Høgsberg committed
65 66
//------------------------------------------------------------------------

67
// #define LOG_CAIRO
Kristian Høgsberg's avatar
Kristian Høgsberg committed
68 69 70 71 72 73 74

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

75 76 77 78 79 80
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);
}

81 82 83 84
//------------------------------------------------------------------------
// CairoImage
//------------------------------------------------------------------------

85 86
CairoImage::CairoImage (double x1, double y1, double x2, double y2) {
  this->image = NULL;
87 88 89 90 91 92 93 94 95 96
  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
97

98 99 100 101 102 103
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
104 105 106 107
//------------------------------------------------------------------------
// CairoOutputDev
//------------------------------------------------------------------------

108 109 110 111 112 113 114 115 116
// 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;

117
CairoOutputDev::CairoOutputDev() {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
118
  xref = NULL;
119
  catalog = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
120

121 122 123 124 125
  if (!ft_lib_initialized) {
    FT_Init_FreeType(&ft_lib);
    ft_lib_initialized = gTrue;
  }

Kristian Høgsberg's avatar
Kristian Høgsberg committed
126
  fontEngine = NULL;
127
  fontEngine_owner = gFalse;
128
  glyphs = NULL;
129
  fill_pattern = NULL;
130
  fill_color.r = fill_color.g = fill_color.b = 0;
131
  stroke_pattern = NULL;
132
  stroke_color.r = stroke_color.g = stroke_color.b = 0;
133 134
  stroke_opacity = 1.0;
  fill_opacity = 1.0;
135
  textClipPath = NULL;
Adrian Johnson's avatar
Adrian Johnson committed
136
  strokePathClip = NULL;
137
  haveCSPattern = gFalse;
138
  cairo = NULL;
139
  currentFont = NULL;
140
  prescaleImages = gTrue;
141
  printing = gTrue;
142
  use_show_text_glyphs = gFalse;
143
  inType3Char = gFalse;
144
  t3_glyph_has_bbox = gFalse;
145 146

  groupColorSpaceStack = NULL;
147
  maskStack = NULL;
148 149
  group = NULL;
  mask = NULL;
150 151 152
  shape = NULL;
  cairo_shape = NULL;
  knockoutCount = 0;
153 154

  text = NULL;
155
  actualText = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
156 157 158
}

CairoOutputDev::~CairoOutputDev() {
159
  if (fontEngine_owner && fontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
160 161
    delete fontEngine;
  }
162

163 164
  if (cairo)
    cairo_destroy (cairo);
165 166
  cairo_pattern_destroy (stroke_pattern);
  cairo_pattern_destroy (fill_pattern);
167 168
  if (group)
    cairo_pattern_destroy (group);
Chris Wilson's avatar
Chris Wilson committed
169 170
  if (mask)
    cairo_pattern_destroy (mask);
171 172
  if (shape)
    cairo_pattern_destroy (shape);
173
  if (text) 
174 175 176
    text->decRefCnt();
  if (actualText)
    delete actualText;  
177
}
Kristian Høgsberg's avatar
Kristian Høgsberg committed
178

179
void CairoOutputDev::setCairo(cairo_t *cairo)
180
{
181 182 183 184 185
  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));
    }
186
    cairo_destroy (this->cairo);
187
    assert(!cairo_shape);
188
  }
189
  if (cairo != NULL) {
190
    this->cairo = cairo_reference (cairo);
191 192 193 194
	/* 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 {
195
    this->cairo = NULL;
196
    this->cairo_shape = NULL;
197
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
198 199
}

200 201 202 203
void CairoOutputDev::setTextPage(TextPage *text)
{
  if (this->text) 
    this->text->decRefCnt();
204 205
  if (actualText)
    delete actualText;
206 207 208
  if (text) {
    this->text = text;
    this->text->incRefCnt();
209
    actualText = new ActualText(text);
210 211
  } else {
    this->text = NULL;
212
    actualText = NULL;
213 214 215
  }
}

216 217
void CairoOutputDev::startDoc(XRef *xrefA, Catalog *catalogA,
			      CairoFontEngine *parentFontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
218
  xref = xrefA;
219
  catalog = catalogA;
220 221 222 223 224 225 226 227
  if (parentFontEngine) {
    fontEngine = parentFontEngine;
  } else {
    if (fontEngine) {
      delete fontEngine;
    }
    fontEngine = new CairoFontEngine(ft_lib);
    fontEngine_owner = gTrue;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
228 229 230
  }
}

231 232 233 234
void CairoOutputDev::startPage(int pageNum, GfxState *state) {
  /* set up some per page defaults */
  cairo_pattern_destroy(fill_pattern);
  cairo_pattern_destroy(stroke_pattern);
235 236 237

  fill_pattern = cairo_pattern_create_rgb(0., 0., 0.);
  stroke_pattern = cairo_pattern_reference(fill_pattern);
238 239 240 241 242 243 244 245 246 247

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

void CairoOutputDev::endPage() {
  if (text) {
    text->endPage();
    text->coalesce(gTrue, gFalse);
  }
248 249
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
250 251 252
void CairoOutputDev::saveState(GfxState *state) {
  LOG(printf ("save\n"));
  cairo_save (cairo);
253 254
  if (cairo_shape)
      cairo_save (cairo_shape);
255 256 257 258 259

  MaskStack *ms = new MaskStack;
  ms->mask = cairo_pattern_reference(mask);
  ms->next = maskStack;
  maskStack = ms;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
260 261 262 263 264
}

void CairoOutputDev::restoreState(GfxState *state) {
  LOG(printf ("restore\n"));
  cairo_restore (cairo);
265 266
  if (cairo_shape)
      cairo_restore (cairo_shape);
267 268 269 270 271 272 273

  /* These aren't restored by cairo_restore() since we keep them in
   * the output device. */
  updateFillColor(state);
  updateStrokeColor(state);
  updateFillOpacity(state);
  updateStrokeOpacity(state);
274
  updateBlendMode(state);
275 276

  MaskStack* ms = maskStack;
277
  if (ms) {
278 279
    if (mask)
      cairo_pattern_destroy(mask);
280 281 282 283
    mask = ms->mask;
    maskStack = ms->next;
    delete ms;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
284 285 286 287 288 289 290 291 292 293 294
}

void CairoOutputDev::updateAll(GfxState *state) {
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
  updateFlatness(state);
  updateMiterLimit(state);
  updateFillColor(state);
  updateStrokeColor(state);
295 296
  updateFillOpacity(state);
  updateStrokeOpacity(state);
297
  updateBlendMode(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
298
  needFontUpdate = gTrue;
299 300
  if (text)
    text->updateFont(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
301 302
}

303 304 305 306 307 308 309 310 311
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];

312
  cairo_transform (cairo, &matrix);
313
  if (cairo_shape)
314
      cairo_transform (cairo_shape, &matrix);
315 316 317 318

  OutputDev::setDefaultCTM(ctm);
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
319 320 321
void CairoOutputDev::updateCTM(GfxState *state, double m11, double m12,
				double m21, double m22,
				double m31, double m32) {
322
  cairo_matrix_t matrix, invert_matrix;
323 324 325 326 327 328 329
  matrix.xx = m11;
  matrix.yx = m12;
  matrix.xy = m21;
  matrix.yy = m22;
  matrix.x0 = m31;
  matrix.y0 = m32;

330 331 332 333 334 335 336 337
  /* 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
338 339 340
   * instead of having to invert the matrix. */
  invert_matrix = matrix;
  if (cairo_matrix_invert(&invert_matrix)) {
341 342 343 344
    warning("matrix not invertible\n");
    return;
  }

345
  cairo_transform (cairo, &matrix);
346 347
  if (cairo_shape)
    cairo_transform (cairo_shape, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
348 349 350 351 352 353 354 355 356 357 358 359
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
}

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

  state->getLineDash(&dashPattern, &dashLength, &dashStart);
360
  cairo_set_dash (cairo, dashPattern, dashLength, dashStart);
361 362
  if (cairo_shape)
    cairo_set_dash (cairo_shape, dashPattern, dashLength, dashStart);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
363 364 365
}

void CairoOutputDev::updateFlatness(GfxState *state) {
366
  // cairo_set_tolerance (cairo, state->getFlatness());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
367 368 369 370 371 372 373 374 375 376 377 378 379 380
}

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;
  }
381 382
  if (cairo_shape)
    cairo_set_line_join (cairo_shape, cairo_get_line_join(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
383 384 385 386 387 388 389 390 391 392 393 394 395 396
}

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;
  }
397 398
  if (cairo_shape)
    cairo_set_line_cap (cairo_shape, cairo_get_line_cap(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
399 400 401 402
}

void CairoOutputDev::updateMiterLimit(GfxState *state) {
  cairo_set_miter_limit (cairo, state->getMiterLimit());
403 404
  if (cairo_shape)
    cairo_set_miter_limit (cairo_shape, state->getMiterLimit());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
405 406
}

407
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
408

Kristian Høgsberg's avatar
Kristian Høgsberg committed
409
void CairoOutputDev::updateLineWidth(GfxState *state) {
410 411
  LOG(printf ("line width: %f\n", state->getLineWidth()));
  if (state->getLineWidth() == 0.0) {
412 413 414
    /* 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;
415 416 417 418 419
    if (printing) {
      // assume printer pixel size is 1/600 inch
      x = 72.0/600;
      y = 72.0/600;
    }
420 421
    cairo_device_to_user_distance(cairo, &x, &y);
    cairo_set_line_width (cairo, MIN(fabs(x),fabs(y)));
422
  } else {
423
    cairo_set_line_width (cairo, state->getLineWidth());
424
  }
425 426
  if (cairo_shape)
    cairo_set_line_width (cairo_shape, cairo_get_line_width (cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
427 428 429
}

void CairoOutputDev::updateFillColor(GfxState *state) {
430
  GfxRGB color = fill_color;
431

432 433 434 435 436 437
  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);
438 439 440
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
441 442 443 444 445
					     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
446 447 448
}

void CairoOutputDev::updateStrokeColor(GfxState *state) {
449
  GfxRGB color = stroke_color;
450

451 452 453 454 455 456
  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);
457 458 459
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
460 461 462 463 464
					       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
465 466
}

467
void CairoOutputDev::updateFillOpacity(GfxState *state) {
468
  double opacity = fill_opacity;
469

470 471 472
  fill_opacity = state->getFillOpacity();
  if (opacity != fill_opacity) {
    cairo_pattern_destroy(fill_pattern);
473 474 475
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
476 477 478 479
					     fill_opacity);

    LOG(printf ("fill opacity: %f\n", fill_opacity));
  }
480 481 482
}

void CairoOutputDev::updateStrokeOpacity(GfxState *state) {
483
  double opacity = stroke_opacity;
484

485 486 487
  stroke_opacity = state->getStrokeOpacity();
  if (opacity != stroke_opacity) {
    cairo_pattern_destroy(stroke_pattern);
488 489 490
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
491 492 493 494
					       stroke_opacity);

    LOG(printf ("stroke opacity: %f\n", stroke_opacity));
  }
495 496
}

497 498 499 500
void CairoOutputDev::updateFillColorStop(GfxState *state, double offset) {
  state->getFillRGB(&fill_color);

  cairo_pattern_add_color_stop_rgba(fill_pattern, offset,
501 502 503
				    colToDbl(fill_color.r),
				    colToDbl(fill_color.g),
				    colToDbl(fill_color.b),
504 505 506 507 508
				    fill_opacity);
  LOG(printf ("fill color stop: %f (%d, %d, %d)\n",
	      offset, fill_color.r, fill_color.g, fill_color.b));
}

509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563
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
564
void CairoOutputDev::updateFont(GfxState *state) {
565
  cairo_font_face_t *font_face;
566
  cairo_matrix_t matrix, invert_matrix;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
567 568

  LOG(printf ("updateFont() font=%s\n", state->getFont()->getName()->getCString()));
569

Kristian Høgsberg's avatar
Kristian Høgsberg committed
570 571
  needFontUpdate = gFalse;

572 573 574 575
  //FIXME: use cairo font engine?
  if (text)
    text->updateFont(state);
  
576
  currentFont = fontEngine->getFont (state->getFont(), xref, catalog, printing);
577

578 579
  if (!currentFont)
    return;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
580

581 582
  font_face = currentFont->getFontFace();
  cairo_set_font_face (cairo, font_face);
583 584 585

  use_show_text_glyphs = state->getFont()->hasToUnicodeCMap() &&
    cairo_surface_has_show_text_glyphs (cairo_get_target (cairo));
586 587 588
 
  double fontSize = state->getFontSize();
  double *m = state->getTextMat();
589 590 591 592 593 594
  /* 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;
595 596
  matrix.xy = -m[2] * fontSize;
  matrix.yy = -m[3] * fontSize;
597 598
  matrix.x0 = 0;
  matrix.y0 = 0;
599

600 601
  LOG(printf ("font matrix: %f %f %f %f\n", matrix.xx, matrix.yx, matrix.xy, matrix.yy));

602 603 604 605 606 607 608 609 610 611 612 613
 /* 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;
  }

614
  cairo_set_font_matrix (cairo, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
615 616
}

617
void CairoOutputDev::doPath(cairo_t *cairo, GfxState *state, GfxPath *path) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
618 619
  GfxSubpath *subpath;
  int i, j;
620
  cairo_new_path (cairo);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
621 622 623
  for (i = 0; i < path->getNumSubpaths(); ++i) {
    subpath = path->getSubpath(i);
    if (subpath->getNumPoints() > 0) {
624 625
      cairo_move_to (cairo, subpath->getX(0), subpath->getY(0));
         j = 1;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
626 627
      while (j < subpath->getNumPoints()) {
	if (subpath->getCurve(j)) {
628 629 630 631 632
	  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
633 634
	  j += 3;
	} else {
635
	  cairo_line_to (cairo, subpath->getX(j), subpath->getY(j));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
636 637 638 639 640 641 642 643 644 645 646 647
	  ++j;
	}
      }
      if (subpath->isClosed()) {
	LOG (printf ("close\n"));
	cairo_close_path (cairo);
      }
    }
  }
}

void CairoOutputDev::stroke(GfxState *state) {
648 649 650 651 652 653 654
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

655
  doPath (cairo, state, state->getPath());
656
  cairo_set_source (cairo, stroke_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
657 658
  LOG(printf ("stroke\n"));
  cairo_stroke (cairo);
659 660 661 662
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_stroke (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
663 664 665
}

void CairoOutputDev::fill(GfxState *state) {
666 667 668 669 670 671 672
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

673
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
674
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
675
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
676
  LOG(printf ("fill\n"));
677
  //XXX: how do we get the path
678 679 680
  if (mask) {
    cairo_clip (cairo);
    cairo_mask (cairo, mask);
Adrian Johnson's avatar
Adrian Johnson committed
681 682
  } else if (strokePathClip) {
    fillToStrokePathClip();
683 684 685
  } else {
    cairo_fill (cairo);
  }
686 687 688 689 690
  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
691 692 693
}

void CairoOutputDev::eoFill(GfxState *state) {
694
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
695
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
696
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
697 698
  LOG(printf ("fill-eo\n"));
  cairo_fill (cairo);
699 700 701 702 703 704 705

  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
706 707
}

708
GBool CairoOutputDev::tilingPatternFill(GfxState *state, Catalog *cat, Object *str,
709
					double *pmat, int paintType, int /*tilingType*/, Dict *resDict,
710 711 712 713 714 715 716 717 718 719 720
					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;
721
  double width, height;
722
  int surface_width, surface_height;
Adrian Johnson's avatar
Adrian Johnson committed
723
  StrokePathClip *strokePathTmp;
724

725 726 727 728
  width = bbox[2] - bbox[0];
  height = bbox[3] - bbox[1];

  if (xStep != width || yStep != height)
729 730 731
    return gFalse;
  /* TODO: implement the other cases here too */

732 733 734
  surface_width = (int) ceil (width);
  surface_height = (int) ceil (height);

735 736
  surface = cairo_surface_create_similar (cairo_get_target (cairo),
					  CAIRO_CONTENT_COLOR_ALPHA,
737
					  surface_width, surface_height);
738 739 740 741 742 743 744 745 746
  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];
Adrian Johnson's avatar
Adrian Johnson committed
747 748
  strokePathTmp = strokePathClip;
  strokePathClip = NULL;
749 750 751
  gfx = new Gfx(xref, this, resDict, catalog, &box, NULL);
  gfx->display(str);
  delete gfx;
Adrian Johnson's avatar
Adrian Johnson committed
752
  strokePathClip = strokePathTmp;
753 754 755 756 757 758 759 760 761 762

  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);

763
  cairo_matrix_init_scale (&matrix, surface_width / width, surface_height / height);
764 765
  cairo_pattern_set_matrix (pattern, &matrix);

766 767 768 769
  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);
Adrian Johnson's avatar
Adrian Johnson committed
770 771 772 773 774
  if (strokePathClip) {
    fillToStrokePathClip();
  } else {
    cairo_fill (cairo);
  }
775 776 777 778 779 780

  cairo_pattern_destroy (pattern);

  return gTrue;
}

781 782 783 784 785 786 787 788 789 790 791
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);
792 793 794 795
  if (!shading->getExtend0() && !shading->getExtend1())
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);
  else
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
796

797 798
  LOG (printf ("axial-sh\n"));

799 800 801 802 803
  // TODO: use the actual stops in the shading in the case
  // of linear interpolation (Type 2 Exponential functions with N=1)
  return gFalse;
}

804 805 806 807 808
GBool CairoOutputDev::axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading)
{
  return (shading->getExtend0() == shading->getExtend1());
}

809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828
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);

829 830
  LOG (printf ("radial-sh\n"));

831 832 833 834 835 836 837 838
  return gFalse;
}

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

839
#if CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2)
840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975
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;
}
976
#endif /* CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2) */
977

978
void CairoOutputDev::clip(GfxState *state) {
979
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
980 981 982
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
  cairo_clip (cairo);
  LOG (printf ("clip\n"));
983 984 985 986 987
  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
988 989 990
}

void CairoOutputDev::eoClip(GfxState *state) {
991
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
992 993 994
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
  cairo_clip (cairo);
  LOG (printf ("clip-eo\n"));
995 996 997 998 999 1000
  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
1001 1002
}

1003 1004
void CairoOutputDev::clipToStrokePath(GfxState *state) {
  LOG(printf("clip-to-stroke-path\n"));
Adrian Johnson's avatar
Adrian Johnson committed
1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043
  strokePathClip = (StrokePathClip*)gmalloc (sizeof(*strokePathClip));
  doPath (cairo, state, state->getPath());
  strokePathClip->path = cairo_copy_path (cairo);
  cairo_get_matrix (cairo, &strokePathClip->ctm);
  strokePathClip->line_width = cairo_get_line_width (cairo);
  strokePathClip->dash_count = cairo_get_dash_count (cairo);
  if (strokePathClip->dash_count) {
    strokePathClip->dashes = (double*) gmallocn (sizeof(double), strokePathClip->dash_count);
    cairo_get_dash (cairo, strokePathClip->dashes, &strokePathClip->dash_offset);
  } else {
    strokePathClip->dashes = NULL;
  }
  strokePathClip->cap = cairo_get_line_cap (cairo);
  strokePathClip->join = cairo_get_line_join (cairo);
  strokePathClip->miter = cairo_get_miter_limit (cairo);
}

void CairoOutputDev::fillToStrokePathClip() {
  cairo_save (cairo);

  cairo_set_matrix (cairo, &strokePathClip->ctm);
  cairo_set_line_width (cairo, strokePathClip->line_width);
  strokePathClip->dash_count = cairo_get_dash_count (cairo);
  cairo_set_dash (cairo, strokePathClip->dashes, strokePathClip->dash_count, strokePathClip->dash_offset);
  cairo_set_line_cap (cairo, strokePathClip->cap);
  cairo_set_line_join (cairo, strokePathClip->join);
  cairo_set_miter_limit (cairo, strokePathClip->miter);

  cairo_new_path (cairo);
  cairo_append_path (cairo, strokePathClip->path);
  cairo_stroke (cairo);

  cairo_restore (cairo);

  cairo_path_destroy (strokePathClip->path);
  if (strokePathClip->dashes)
    gfree (strokePathClip->dashes);
  gfree (strokePathClip);
  strokePathClip = NULL;
1044 1045
}

1046
void CairoOutputDev::beginString(GfxState *state, GooString *s)
1047 1048
{
  int len = s->getLength();
1049

1050 1051 1052
  if (needFontUpdate)
    updateFont(state);

1053 1054 1055
  if (!currentFont)
    return;

1056
  glyphs = (cairo_glyph_t *) gmallocn (len, sizeof (cairo_glyph_t));
1057
  glyphCount = 0;
1058
  if (use_show_text_glyphs) {
1059 1060 1061 1062 1063 1064
    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;
  }
1065 1066 1067 1068 1069
}

void CairoOutputDev::drawChar(GfxState *state, double x, double y,
			      double dx, double dy,
			      double originX, double originY,
1070
			      CharCode code, int nBytes, Unicode *u, int uLen)
1071
{
1072 1073 1074 1075 1076
  if (currentFont) {
    glyphs[glyphCount].index = currentFont->getGlyph (code, u, uLen);
    glyphs[glyphCount].x = x - originX;
    glyphs[glyphCount].y = y - originY;
    glyphCount++;
1077
    if (use_show_text_glyphs) {
1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094
      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++;
    }
1095 1096 1097
  }

  if (!text)
1098
    return;
1099
  actualText->addChar (state, x, y, dx, dy, code, nBytes, u, uLen);
1100 1101 1102 1103 1104 1105 1106
}

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

  if (!currentFont)
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1107
    return;
1108 1109 1110 1111 1112 1113 1114

  // 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;

1115 1116
  // ignore empty strings and invisible text -- this is used by
  // Acrobat Capture
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1117
  render = state->getRender();
1118
  if (render == 3 || glyphCount == 0) {
1119 1120
    gfree(glyphs);
    glyphs = NULL;
1121
    return;
1122
  }
1123

1124
  if (!(render & 1) && !haveCSPattern) {
1125
    LOG (printf ("fill string\n"));
1126
    cairo_set_source (cairo, fill_pattern);
1127
    if (use_show_text_glyphs)
1128 1129 1130
      cairo_show_text_glyphs (cairo, utf8, utf8Count, glyphs, glyphCount, clusters, clusterCount, (cairo_text_cluster_flags_t)0);
    else
        cairo_show_glyphs (cairo, glyphs, glyphCount);
1131 1132
    if (cairo_shape)
      cairo_show_glyphs (cairo_shape, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1133
  }
1134

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1135 1136
  // stroke
  if ((render & 3) == 1 || (render & 3) == 2) {
1137
    LOG (printf ("stroke string\n"));
1138
    cairo_set_source (cairo, stroke_pattern);
1139
    cairo_glyph_path (cairo, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1140
    cairo_stroke (cairo);
1141 1142 1143 1144
    if (cairo_shape) {
      cairo_glyph_path (cairo_shape, glyphs, glyphCount);
      cairo_stroke (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1145 1146 1147
  }

  // clip
1148
  if (haveCSPattern || (render & 4)) {
1149
    LOG (printf ("clip string\n"));
1150 1151 1152 1153 1154
    // append the glyph path to textClipPath.

    // set textClipPath as the currentPath
    if (textClipPath) {
      cairo_append_path (cairo, textClipPath);
1155 1156 1157
      if (cairo_shape) {
	cairo_append_path (cairo_shape, textClipPath);
      }
1158 1159 1160 1161
      cairo_path_destroy (textClipPath);
    }
    
    // append the glyph path
1162
    cairo_glyph_path (cairo, glyphs, glyphCount);
1163 1164 1165 1166 1167
   
    // move the path back into textClipPath 
    // and clear the current path
    textClipPath = cairo_copy_path (cairo);
    cairo_new_path (cairo);
1168 1169 1170
    if (cairo_shape) {
      cairo_new_path (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1171
  }
1172

1173
  gfree (glyphs);
1174
  glyphs = NULL;
1175
  if (use_show_text_glyphs) {
1176 1177 1178 1179 1180
    gfree (clusters);
    clusters = NULL;
    gfree (utf8);
    utf8 = NULL;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1181 1182
}

1183

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1184 1185 1186
GBool CairoOutputDev::beginType3Char(GfxState *state, double x, double y,
				      double dx, double dy,
				      CharCode code, Unicode *u, int uLen) {
1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198

  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];
1199 1200 1201 1202
  /* 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);
1203 1204 1205 1206 1207
  if (cairo_shape) {
    cairo_save (cairo_shape);
    cairo_set_matrix(cairo_shape, &orig_matrix);
    cairo_transform(cairo_shape, &matrix);
  }
1208 1209
  cairo_pattern_destroy(stroke_pattern);
  cairo_pattern_reference(fill_pattern);
1210
  stroke_pattern = fill_pattern;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1211 1212 1213 1214
  return gFalse;
}

void CairoOutputDev::endType3Char(GfxState *state) {
1215
  cairo_restore (cairo);
1216 1217 1218
  if (cairo_shape) {
    cairo_restore (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1219 1220 1221
}

void CairoOutputDev::type3D0(GfxState *state, double wx, double wy) {
1222 1223
  t3_glyph_wx = wx;
  t3_glyph_wy = wy;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1224 1225 1226
}

void CairoOutputDev::type3D1(GfxState *state, double wx, double wy,
1227
			     double llx, double lly, double urx, double ury) {
1228 1229 1230 1231 1232 1233 1234
  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
1235 1236
}

1237
void CairoOutputDev::beginTextObject(GfxState *state) {
1238
  if (!(state->getRender() & 4) && state->getFillColorSpace()->getMode() == csPattern) {
1239 1240 1241 1242 1243
    haveCSPattern = gTrue;
    saveState(state);
  }
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1244
void CairoOutputDev::endTextObject(GfxState *state) {
1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267
  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);
    }
  }

1268 1269 1270 1271
  if (textClipPath) {
    // clip the accumulated text path
    cairo_append_path (cairo, textClipPath);
    cairo_clip (cairo);
1272 1273 1274 1275
    if (cairo_shape) {
      cairo_append_path (cairo_shape, textClipPath);
      cairo_clip (cairo_shape);
    }
1276 1277 1278
    cairo_path_destroy (textClipPath);
    textClipPath = NULL;
  }
1279
}
1280

1281 1282
void CairoOutputDev::beginMarkedContent(char *name, Dict *properties)
{
1283 1284
  if (text)
    actualText->beginMC(properties);
1285 1286 1287 1288
}

void CairoOutputDev::endMarkedContent(GfxState *state)
{
1289 1290
  if (text)
    actualText->endMC(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1291 1292
}

1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304
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);
}

1305 1306 1307 1308 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
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;
}



1335 1336
void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
                                      GfxColorSpace * blendingColorSpace,
1337
                                      GBool /*isolated*/, GBool knockout,
1338 1339 1340 1341
				      GBool forSoftMask) {
  /* push color space */
  ColorSpaceStack* css = new ColorSpaceStack;
  css->cs = blendingColorSpace;
1342
  css->knockout = knockout;
1343 1344
  css->next = groupColorSpaceStack;
  groupColorSpaceStack = css;
1345 1346 1347

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

1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369
  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);
  }
1370 1371 1372 1373
  if (0 && forSoftMask)
    cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
  else
    cairo_push_group (cairo);
1374 1375 1376 1377 1378 1379 1380 1381

  /* 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);
  }
1382
}