CairoOutputDev.cc 81.2 KB
Newer Older
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1 2 3 4 5 6 7 8
//========================================================================
//
// CairoOutputDev.cc
//
// Copyright 2003 Glyph & Cog, LLC
// Copyright 2004 Red Hat, Inc
//
//========================================================================
9 10 11 12 13

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

#include <config.h>

#ifdef USE_GCC_PRAGMAS
#pragma implementation
#endif

#include <string.h>
#include <math.h>
43
#include <assert.h>
Kristian Høgsberg's avatar
Kristian Høgsberg committed
44 45 46
#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
  inType3Char = gFalse;
143
  t3_glyph_has_bbox = gFalse;
144 145

  groupColorSpaceStack = NULL;
146
  maskStack = NULL;
147 148
  group = NULL;
  mask = NULL;
149 150 151
  shape = NULL;
  cairo_shape = NULL;
  knockoutCount = 0;
152 153

  text = NULL;
154
  actualText = NULL;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
155 156 157
}

CairoOutputDev::~CairoOutputDev() {
158
  if (fontEngine_owner && fontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
159 160
    delete fontEngine;
  }
161

162 163
  if (cairo)
    cairo_destroy (cairo);
164 165
  cairo_pattern_destroy (stroke_pattern);
  cairo_pattern_destroy (fill_pattern);
166 167
  if (group)
    cairo_pattern_destroy (group);
Chris Wilson's avatar
Chris Wilson committed
168 169
  if (mask)
    cairo_pattern_destroy (mask);
170 171
  if (shape)
    cairo_pattern_destroy (shape);
172
  if (text) 
173 174 175
    text->decRefCnt();
  if (actualText)
    delete actualText;  
176
}
Kristian Høgsberg's avatar
Kristian Høgsberg committed
177

178
void CairoOutputDev::setCairo(cairo_t *cairo)
179
{
180 181 182 183 184
  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));
    }
185
    cairo_destroy (this->cairo);
186
    assert(!cairo_shape);
187
  }
188
  if (cairo != NULL) {
189
    this->cairo = cairo_reference (cairo);
190 191 192 193
	/* 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 {
194
    this->cairo = NULL;
195
    this->cairo_shape = NULL;
196
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
197 198
}

199 200 201 202
void CairoOutputDev::setTextPage(TextPage *text)
{
  if (this->text) 
    this->text->decRefCnt();
203 204
  if (actualText)
    delete actualText;
205 206 207
  if (text) {
    this->text = text;
    this->text->incRefCnt();
208
    actualText = new ActualText(text);
209 210
  } else {
    this->text = NULL;
211
    actualText = NULL;
212 213 214
  }
}

215 216
void CairoOutputDev::startDoc(XRef *xrefA, Catalog *catalogA,
			      CairoFontEngine *parentFontEngine) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
217
  xref = xrefA;
218
  catalog = catalogA;
219 220 221 222 223 224 225 226
  if (parentFontEngine) {
    fontEngine = parentFontEngine;
  } else {
    if (fontEngine) {
      delete fontEngine;
    }
    fontEngine = new CairoFontEngine(ft_lib);
    fontEngine_owner = gTrue;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
227 228 229
  }
}

230 231 232 233
void CairoOutputDev::startPage(int pageNum, GfxState *state) {
  /* set up some per page defaults */
  cairo_pattern_destroy(fill_pattern);
  cairo_pattern_destroy(stroke_pattern);
234 235 236

  fill_pattern = cairo_pattern_create_rgb(0., 0., 0.);
  stroke_pattern = cairo_pattern_reference(fill_pattern);
237 238 239 240 241 242 243 244 245 246

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

void CairoOutputDev::endPage() {
  if (text) {
    text->endPage();
    text->coalesce(gTrue, gFalse);
  }
247 248
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
249 250 251
void CairoOutputDev::saveState(GfxState *state) {
  LOG(printf ("save\n"));
  cairo_save (cairo);
252 253
  if (cairo_shape)
      cairo_save (cairo_shape);
254 255 256 257 258

  MaskStack *ms = new MaskStack;
  ms->mask = cairo_pattern_reference(mask);
  ms->next = maskStack;
  maskStack = ms;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
259 260 261 262 263
}

void CairoOutputDev::restoreState(GfxState *state) {
  LOG(printf ("restore\n"));
  cairo_restore (cairo);
264 265
  if (cairo_shape)
      cairo_restore (cairo_shape);
266 267 268 269 270 271 272

  /* These aren't restored by cairo_restore() since we keep them in
   * the output device. */
  updateFillColor(state);
  updateStrokeColor(state);
  updateFillOpacity(state);
  updateStrokeOpacity(state);
273
  updateBlendMode(state);
274 275

  MaskStack* ms = maskStack;
276
  if (ms) {
277 278
    if (mask)
      cairo_pattern_destroy(mask);
279 280 281 282
    mask = ms->mask;
    maskStack = ms->next;
    delete ms;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
283 284 285 286 287 288 289 290 291 292 293
}

void CairoOutputDev::updateAll(GfxState *state) {
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
  updateFlatness(state);
  updateMiterLimit(state);
  updateFillColor(state);
  updateStrokeColor(state);
294 295
  updateFillOpacity(state);
  updateStrokeOpacity(state);
296
  updateBlendMode(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
297
  needFontUpdate = gTrue;
298 299
  if (text)
    text->updateFont(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
300 301
}

302 303 304 305 306 307 308 309 310
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];

311
  cairo_transform (cairo, &matrix);
312
  if (cairo_shape)
313
      cairo_transform (cairo_shape, &matrix);
314 315 316 317

  OutputDev::setDefaultCTM(ctm);
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
318 319 320
void CairoOutputDev::updateCTM(GfxState *state, double m11, double m12,
				double m21, double m22,
				double m31, double m32) {
321
  cairo_matrix_t matrix, invert_matrix;
322 323 324 325 326 327 328
  matrix.xx = m11;
  matrix.yx = m12;
  matrix.xy = m21;
  matrix.yy = m22;
  matrix.x0 = m31;
  matrix.y0 = m32;

329 330 331 332 333 334 335 336
  /* 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
337 338 339
   * instead of having to invert the matrix. */
  invert_matrix = matrix;
  if (cairo_matrix_invert(&invert_matrix)) {
340 341 342 343
    warning("matrix not invertible\n");
    return;
  }

344
  cairo_transform (cairo, &matrix);
345 346
  if (cairo_shape)
    cairo_transform (cairo_shape, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
347 348 349 350 351 352 353 354 355 356 357 358
  updateLineDash(state);
  updateLineJoin(state);
  updateLineCap(state);
  updateLineWidth(state);
}

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

  state->getLineDash(&dashPattern, &dashLength, &dashStart);
359
  cairo_set_dash (cairo, dashPattern, dashLength, dashStart);
360 361
  if (cairo_shape)
    cairo_set_dash (cairo_shape, dashPattern, dashLength, dashStart);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
362 363 364
}

void CairoOutputDev::updateFlatness(GfxState *state) {
365
  // cairo_set_tolerance (cairo, state->getFlatness());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
366 367 368 369 370 371 372 373 374 375 376 377 378 379
}

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;
  }
380 381
  if (cairo_shape)
    cairo_set_line_join (cairo_shape, cairo_get_line_join(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
382 383 384 385 386 387 388 389 390 391 392 393 394 395
}

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;
  }
396 397
  if (cairo_shape)
    cairo_set_line_cap (cairo_shape, cairo_get_line_cap(cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
398 399 400 401
}

void CairoOutputDev::updateMiterLimit(GfxState *state) {
  cairo_set_miter_limit (cairo, state->getMiterLimit());
402 403
  if (cairo_shape)
    cairo_set_miter_limit (cairo_shape, state->getMiterLimit());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
404 405
}

406
#define MIN(a,b) (((a) < (b)) ? (a) : (b))
407

Kristian Høgsberg's avatar
Kristian Høgsberg committed
408
void CairoOutputDev::updateLineWidth(GfxState *state) {
409 410
  LOG(printf ("line width: %f\n", state->getLineWidth()));
  if (state->getLineWidth() == 0.0) {
411 412 413
    /* 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;
414 415 416 417 418
    if (printing) {
      // assume printer pixel size is 1/600 inch
      x = 72.0/600;
      y = 72.0/600;
    }
419 420
    cairo_device_to_user_distance(cairo, &x, &y);
    cairo_set_line_width (cairo, MIN(fabs(x),fabs(y)));
421
  } else {
422
    cairo_set_line_width (cairo, state->getLineWidth());
423
  }
424 425
  if (cairo_shape)
    cairo_set_line_width (cairo_shape, cairo_get_line_width (cairo));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
426 427 428
}

void CairoOutputDev::updateFillColor(GfxState *state) {
429
  GfxRGB color = fill_color;
430

431 432 433 434 435 436
  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);
437 438 439
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
440 441 442 443 444
					     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
445 446 447
}

void CairoOutputDev::updateStrokeColor(GfxState *state) {
448
  GfxRGB color = stroke_color;
449

450 451 452 453 454 455
  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);
456 457 458
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
459 460 461 462 463
					       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
464 465
}

466
void CairoOutputDev::updateFillOpacity(GfxState *state) {
467
  double opacity = fill_opacity;
468

469 470 471
  fill_opacity = state->getFillOpacity();
  if (opacity != fill_opacity) {
    cairo_pattern_destroy(fill_pattern);
472 473 474
    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
					     colToDbl(fill_color.g),
					     colToDbl(fill_color.b),
475 476 477 478
					     fill_opacity);

    LOG(printf ("fill opacity: %f\n", fill_opacity));
  }
479 480 481
}

void CairoOutputDev::updateStrokeOpacity(GfxState *state) {
482
  double opacity = stroke_opacity;
483

484 485 486
  stroke_opacity = state->getStrokeOpacity();
  if (opacity != stroke_opacity) {
    cairo_pattern_destroy(stroke_pattern);
487 488 489
    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
					       colToDbl(stroke_color.g),
					       colToDbl(stroke_color.b),
490 491 492 493
					       stroke_opacity);

    LOG(printf ("stroke opacity: %f\n", stroke_opacity));
  }
494 495
}

496 497 498 499
void CairoOutputDev::updateFillColorStop(GfxState *state, double offset) {
  state->getFillRGB(&fill_color);

  cairo_pattern_add_color_stop_rgba(fill_pattern, offset,
500 501 502
				    colToDbl(fill_color.r),
				    colToDbl(fill_color.g),
				    colToDbl(fill_color.b),
503 504 505 506 507
				    fill_opacity);
  LOG(printf ("fill color stop: %f (%d, %d, %d)\n",
	      offset, fill_color.r, fill_color.g, fill_color.b));
}

508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562
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
563
void CairoOutputDev::updateFont(GfxState *state) {
564
  cairo_font_face_t *font_face;
565
  cairo_matrix_t matrix, invert_matrix;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
566 567

  LOG(printf ("updateFont() font=%s\n", state->getFont()->getName()->getCString()));
568

Kristian Høgsberg's avatar
Kristian Høgsberg committed
569 570
  needFontUpdate = gFalse;

571 572 573 574
  //FIXME: use cairo font engine?
  if (text)
    text->updateFont(state);
  
575
  currentFont = fontEngine->getFont (state->getFont(), xref, catalog, printing);
576

577 578
  if (!currentFont)
    return;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
579

580 581
  font_face = currentFont->getFontFace();
  cairo_set_font_face (cairo, font_face);
582 583 584
 
  double fontSize = state->getFontSize();
  double *m = state->getTextMat();
585 586 587 588 589 590
  /* 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;
591 592
  matrix.xy = -m[2] * fontSize;
  matrix.yy = -m[3] * fontSize;
593 594
  matrix.x0 = 0;
  matrix.y0 = 0;
595

596 597
  LOG(printf ("font matrix: %f %f %f %f\n", matrix.xx, matrix.yx, matrix.xy, matrix.yy));

598 599 600 601 602 603 604 605 606 607 608 609
 /* 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;
  }

610
  cairo_set_font_matrix (cairo, &matrix);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
611 612
}

613
void CairoOutputDev::doPath(cairo_t *cairo, GfxState *state, GfxPath *path) {
Kristian Høgsberg's avatar
Kristian Høgsberg committed
614 615
  GfxSubpath *subpath;
  int i, j;
616
  cairo_new_path (cairo);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
617 618 619
  for (i = 0; i < path->getNumSubpaths(); ++i) {
    subpath = path->getSubpath(i);
    if (subpath->getNumPoints() > 0) {
620 621
      cairo_move_to (cairo, subpath->getX(0), subpath->getY(0));
         j = 1;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
622 623
      while (j < subpath->getNumPoints()) {
	if (subpath->getCurve(j)) {
624 625 626 627 628
	  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
629 630
	  j += 3;
	} else {
631
	  cairo_line_to (cairo, subpath->getX(j), subpath->getY(j));
Kristian Høgsberg's avatar
Kristian Høgsberg committed
632 633 634 635 636 637 638 639 640 641 642 643
	  ++j;
	}
      }
      if (subpath->isClosed()) {
	LOG (printf ("close\n"));
	cairo_close_path (cairo);
      }
    }
  }
}

void CairoOutputDev::stroke(GfxState *state) {
644 645 646 647 648 649 650
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

651
  doPath (cairo, state, state->getPath());
652
  cairo_set_source (cairo, stroke_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
653 654
  LOG(printf ("stroke\n"));
  cairo_stroke (cairo);
655 656 657 658
  if (cairo_shape) {
    doPath (cairo_shape, state, state->getPath());
    cairo_stroke (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
659 660 661
}

void CairoOutputDev::fill(GfxState *state) {
662 663 664 665 666 667 668
  if (inType3Char) {
      GfxGray gray;
      state->getFillGray(&gray);
      if (colToDbl(gray) > 0.5)
	  return;
  }

669
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
670
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
671
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
672
  LOG(printf ("fill\n"));
673
  //XXX: how do we get the path
674 675 676
  if (mask) {
    cairo_clip (cairo);
    cairo_mask (cairo, mask);
Adrian Johnson's avatar
Adrian Johnson committed
677 678
  } else if (strokePathClip) {
    fillToStrokePathClip();
679 680 681
  } else {
    cairo_fill (cairo);
  }
682 683 684 685 686
  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
687 688 689
}

void CairoOutputDev::eoFill(GfxState *state) {
690
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
691
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
692
  cairo_set_source (cairo, fill_pattern);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
693 694
  LOG(printf ("fill-eo\n"));
  cairo_fill (cairo);
695 696 697 698 699 700 701

  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
702 703
}

704
GBool CairoOutputDev::tilingPatternFill(GfxState *state, Catalog *cat, Object *str,
705
					double *pmat, int paintType, int /*tilingType*/, Dict *resDict,
706 707 708 709 710 711 712 713 714 715 716
					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;
717
  double width, height;
718
  int surface_width, surface_height;
Adrian Johnson's avatar
Adrian Johnson committed
719
  StrokePathClip *strokePathTmp;
720

721 722 723 724
  width = bbox[2] - bbox[0];
  height = bbox[3] - bbox[1];

  if (xStep != width || yStep != height)
725 726 727
    return gFalse;
  /* TODO: implement the other cases here too */

728 729 730
  surface_width = (int) ceil (width);
  surface_height = (int) ceil (height);

731 732
  surface = cairo_surface_create_similar (cairo_get_target (cairo),
					  CAIRO_CONTENT_COLOR_ALPHA,
733
					  surface_width, surface_height);
734 735 736 737 738 739 740 741 742
  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
743 744
  strokePathTmp = strokePathClip;
  strokePathClip = NULL;
745 746 747
  gfx = new Gfx(xref, this, resDict, catalog, &box, NULL);
  gfx->display(str);
  delete gfx;
Adrian Johnson's avatar
Adrian Johnson committed
748
  strokePathClip = strokePathTmp;
749 750 751 752 753 754 755 756 757 758

  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);

759
  cairo_matrix_init_scale (&matrix, surface_width / width, surface_height / height);
760 761
  cairo_pattern_set_matrix (pattern, &matrix);

762 763 764 765
  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
766 767 768 769 770
  if (strokePathClip) {
    fillToStrokePathClip();
  } else {
    cairo_fill (cairo);
  }
771 772 773 774 775 776

  cairo_pattern_destroy (pattern);

  return gTrue;
}

777 778 779 780 781 782 783 784 785 786 787
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);
788 789 790 791
  if (!shading->getExtend0() && !shading->getExtend1())
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);
  else
    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
792

793 794
  LOG (printf ("axial-sh\n"));

795 796 797 798 799
  // TODO: use the actual stops in the shading in the case
  // of linear interpolation (Type 2 Exponential functions with N=1)
  return gFalse;
}

800 801 802 803 804
GBool CairoOutputDev::axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading)
{
  return (shading->getExtend0() == shading->getExtend1());
}

805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824
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);

825 826
  LOG (printf ("radial-sh\n"));

827 828 829 830 831 832 833 834
  return gFalse;
}

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

835
#if CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2)
836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971
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;
}
972
#endif /* CAIRO_VERSION == CAIRO_VERSION_ENCODE(1, 11, 2) */
973

974
void CairoOutputDev::clip(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_WINDING);
  cairo_clip (cairo);
  LOG (printf ("clip\n"));
979 980 981 982 983
  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
984 985 986
}

void CairoOutputDev::eoClip(GfxState *state) {
987
  doPath (cairo, state, state->getPath());
Kristian Høgsberg's avatar
Kristian Høgsberg committed
988 989 990
  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
  cairo_clip (cairo);
  LOG (printf ("clip-eo\n"));
991 992 993 994 995 996
  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
997 998
}

999 1000
void CairoOutputDev::clipToStrokePath(GfxState *state) {
  LOG(printf("clip-to-stroke-path\n"));
Adrian Johnson's avatar
Adrian Johnson committed
1001 1002 1003 1004 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
  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;
1040 1041
}

1042
void CairoOutputDev::beginString(GfxState *state, GooString *s)
1043 1044
{
  int len = s->getLength();
1045

1046 1047 1048
  if (needFontUpdate)
    updateFont(state);

1049 1050 1051
  if (!currentFont)
    return;

1052
  glyphs = (cairo_glyph_t *) gmallocn (len, sizeof (cairo_glyph_t));
1053
  glyphCount = 0;
1054 1055 1056 1057 1058 1059 1060
  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;
  }
1061 1062 1063 1064 1065
}

void CairoOutputDev::drawChar(GfxState *state, double x, double y,
			      double dx, double dy,
			      double originX, double originY,
1066
			      CharCode code, int nBytes, Unicode *u, int uLen)
1067
{
1068 1069 1070 1071 1072
  if (currentFont) {
    glyphs[glyphCount].index = currentFont->getGlyph (code, u, uLen);
    glyphs[glyphCount].x = x - originX;
    glyphs[glyphCount].y = y - originY;
    glyphCount++;
1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090
    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++;
    }
1091 1092 1093
  }

  if (!text)
1094
    return;
1095
  actualText->addChar (state, x, y, dx, dy, code, nBytes, u, uLen);
1096 1097 1098 1099 1100 1101 1102
}

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

  if (!currentFont)
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1103
    return;
1104 1105 1106 1107 1108 1109 1110

  // 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;

1111 1112
  // ignore empty strings and invisible text -- this is used by
  // Acrobat Capture
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1113
  render = state->getRender();
1114
  if (render == 3 || glyphCount == 0) {
1115 1116
    gfree(glyphs);
    glyphs = NULL;
1117
    return;
1118
  }
1119

1120
  if (!(render & 1) && !haveCSPattern) {
1121
    LOG (printf ("fill string\n"));
1122
    cairo_set_source (cairo, fill_pattern);
1123 1124 1125 1126
    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);
1127 1128
    if (cairo_shape)
      cairo_show_glyphs (cairo_shape, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1129
  }
1130

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1131 1132
  // stroke
  if ((render & 3) == 1 || (render & 3) == 2) {
1133
    LOG (printf ("stroke string\n"));
1134
    cairo_set_source (cairo, stroke_pattern);
1135
    cairo_glyph_path (cairo, glyphs, glyphCount);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1136
    cairo_stroke (cairo);
1137 1138 1139 1140
    if (cairo_shape) {
      cairo_glyph_path (cairo_shape, glyphs, glyphCount);
      cairo_stroke (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1141 1142 1143
  }

  // clip
1144
  if (haveCSPattern || (render & 4)) {
1145
    LOG (printf ("clip string\n"));
1146 1147 1148 1149 1150
    // append the glyph path to textClipPath.

    // set textClipPath as the currentPath
    if (textClipPath) {
      cairo_append_path (cairo, textClipPath);
1151 1152 1153
      if (cairo_shape) {
	cairo_append_path (cairo_shape, textClipPath);
      }
1154 1155 1156 1157
      cairo_path_destroy (textClipPath);
    }
    
    // append the glyph path
1158
    cairo_glyph_path (cairo, glyphs, glyphCount);
1159 1160 1161 1162 1163
   
    // move the path back into textClipPath 
    // and clear the current path
    textClipPath = cairo_copy_path (cairo);
    cairo_new_path (cairo);
1164 1165 1166
    if (cairo_shape) {
      cairo_new_path (cairo_shape);
    }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1167
  }
1168

1169
  gfree (glyphs);
1170
  glyphs = NULL;
1171 1172 1173 1174 1175 1176
  if (printing) {
    gfree (clusters);
    clusters = NULL;
    gfree (utf8);
    utf8 = NULL;
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1177 1178
}

1179

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1180 1181 1182
GBool CairoOutputDev::beginType3Char(GfxState *state, double x, double y,
				      double dx, double dy,
				      CharCode code, Unicode *u, int uLen) {
1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194

  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];
1195 1196 1197 1198
  /* 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);
1199 1200 1201 1202 1203
  if (cairo_shape) {
    cairo_save (cairo_shape);
    cairo_set_matrix(cairo_shape, &orig_matrix);
    cairo_transform(cairo_shape, &matrix);
  }
1204 1205
  cairo_pattern_destroy(stroke_pattern);
  cairo_pattern_reference(fill_pattern);
1206
  stroke_pattern = fill_pattern;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1207 1208 1209 1210
  return gFalse;
}

void CairoOutputDev::endType3Char(GfxState *state) {
1211
  cairo_restore (cairo);
1212 1213 1214
  if (cairo_shape) {
    cairo_restore (cairo_shape);
  }
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1215 1216 1217
}

void CairoOutputDev::type3D0(GfxState *state, double wx, double wy) {
1218 1219
  t3_glyph_wx = wx;
  t3_glyph_wy = wy;
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1220 1221 1222
}

void CairoOutputDev::type3D1(GfxState *state, double wx, double wy,
1223
			     double llx, double lly, double urx, double ury) {
1224 1225 1226 1227 1228 1229 1230
  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
1231 1232
}

1233
void CairoOutputDev::beginTextObject(GfxState *state) {
1234
  if (!(state->getRender() & 4) && state->getFillColorSpace()->getMode() == csPattern) {
1235 1236 1237 1238 1239
    haveCSPattern = gTrue;
    saveState(state);
  }
}

Kristian Høgsberg's avatar
Kristian Høgsberg committed
1240
void CairoOutputDev::endTextObject(GfxState *state) {
1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263
  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);
    }
  }

1264 1265 1266 1267
  if (textClipPath) {
    // clip the accumulated text path
    cairo_append_path (cairo, textClipPath);
    cairo_clip (cairo);
1268 1269 1270 1271
    if (cairo_shape) {
      cairo_append_path (cairo_shape, textClipPath);
      cairo_clip (cairo_shape);
    }
1272 1273 1274
    cairo_path_destroy (textClipPath);
    textClipPath = NULL;
  }
1275
}
1276

1277 1278
void CairoOutputDev::beginMarkedContent(char *name, Dict *properties)
{
1279 1280
  if (text)
    actualText->beginMC(properties);
1281 1282 1283 1284
}

void CairoOutputDev::endMarkedContent(GfxState *state)
{
1285 1286
  if (text)
    actualText->endMC(state);
Kristian Høgsberg's avatar
Kristian Høgsberg committed
1287 1288
}

1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300
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);
}

1301 1302 1303 1304 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
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;
}



1331 1332
void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
                                      GfxColorSpace * blendingColorSpace,
1333
                                      GBool /*isolated*/, GBool knockout,
1334 1335 1336 1337
				      GBool forSoftMask) {
  /* push color space */
  ColorSpaceStack* css = new ColorSpaceStack;
  css->cs = blendingColorSpace;
1338
  css->knockout = knockout;
1339 1340
  css->next = groupColorSpaceStack;
  groupColorSpaceStack = css;
1341 1342 1343

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

1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365
  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);
  }
1366 1367 1368 1369
  if (0 && forSoftMask)
    cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
  else
    cairo_push_group (cairo);
1370 1371 1372 1373 1374 1375 1376 1377

  /* 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);
  }
1378
}
1379

1380 1381 1382 1383
void CairoOutputDev::endTransparencyGroup(GfxState * /*state*/) {
  if (group)
    cairo_pattern_destroy(group);
  group = cairo_pop_group (cairo);
1384

1385 1386
  LOG(printf ("end transparency group\n"));

1387 1388 1389 1390 1391
  if (groupColorSpaceStack->next && groupColorSpaceStack->next->knockout) {
    if (shape)
      cairo_pattern_destroy(shape);
    shape =