Merge lp:~matttbe/ubuntu/raring/poppler/lp1072129 into lp:ubuntu/raring/poppler

[Matthieu Baerts]

Hello,

Due to a bug in poppler, Evince crash when loading some PDF files (LP: #1072129).
This new version simply adds the upstream patch in order to fix this bug.

For more details about this new version, please have a look at this bug #1072129.

Thank you for your help! :)

PS: You can easily test the new version by using these packages:
  - Ubuntu Raring 13.04: https://launchpad.net/~matttbe/+archive/ppa/+sourcepub/2781218/+listing-archive-extra
  - Ubuntu Quantal 12.10: https://launchpad.net/~matttbe/+archive/ppa/+sourcepub/2781220/+listing-archive-extra

=== modified file '.pc/applied-patches'
--- .pc/applied-patches	2012-08-14 13:11:05 +0000
+++ .pc/applied-patches	2012-11-13 19:26:27 +0000
@@ -1,2 +1,3 @@
 ltmain-as-needed.diff
 qt4-visibility.diff
+git_gouraud_shading_support.patch
 
=== added directory '.pc/git_gouraud_shading_support.patch'
=== added directory '.pc/git_gouraud_shading_support.patch/poppler'
=== added file '.pc/git_gouraud_shading_support.patch/poppler/CairoOutputDev.cc'
--- .pc/git_gouraud_shading_support.patch/poppler/CairoOutputDev.cc	1970-01-01 00:00:00 +0000
+++ .pc/git_gouraud_shading_support.patch/poppler/CairoOutputDev.cc	2012-11-13 19:26:27 +0000
@@ -0,0 +1,3121 @@
+//========================================================================
+//
+// CairoOutputDev.cc
+//
+// Copyright 2003 Glyph & Cog, LLC
+// Copyright 2004 Red Hat, Inc
+//
+//========================================================================
+
+//========================================================================
+//
+// Modified under the Poppler project - http://poppler.freedesktop.org
+//
+// All changes made under the Poppler project to this file are licensed
+// under GPL version 2 or later
+//
+// Copyright (C) 2005-2008 Jeff Muizelaar <[e-mail]>
+// Copyright (C) 2005, 2006 Kristian Høgsberg <[e-mail]>
+// Copyright (C) 2005, 2009, 2012 Albert Astals Cid <[e-mail]>
+// Copyright (C) 2005 Nickolay V. Shmyrev <[e-mail]>
+// Copyright (C) 2006-2011 Carlos Garcia Campos <[e-mail]>
+// Copyright (C) 2008 Carl Worth <[e-mail]>
+// Copyright (C) 2008-2012 Adrian Johnson <[e-mail]>
+// Copyright (C) 2008 Michael Vrable <[e-mail]>
+// Copyright (C) 2008, 2009 Chris Wilson <[e-mail]>
+// Copyright (C) 2008 Hib Eris <[e-mail]>
+// Copyright (C) 2009, 2010 David Benjamin <[e-mail]>
+// Copyright (C) 2011, 2012 Thomas Freitag <[e-mail]>
+// Copyright (C) 2012 Patrick Pfeifer <[e-mail]>
+//
+// 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
+//
+//========================================================================
+
+#include <config.h>
+
+#ifdef USE_GCC_PRAGMAS
+#pragma implementation
+#endif
+
+#include <string.h>
+#include <math.h>
+#include <assert.h>
+#include <cairo.h>
+
+#include "goo/gfile.h"
+#include "goo/gtypes_p.h"
+#include "GlobalParams.h"
+#include "Error.h"
+#include "Object.h"
+#include "Gfx.h"
+#include "GfxState.h"
+#include "GfxFont.h"
+#include "Page.h"
+#include "Link.h"
+#include "FontEncodingTables.h"
+#include "PDFDocEncoding.h"
+#include <fofi/FoFiTrueType.h>
+#include <splash/SplashBitmap.h>
+#include "CairoOutputDev.h"
+#include "CairoFontEngine.h"
+#include "CairoRescaleBox.h"
+#include "UTF8.h"
+//------------------------------------------------------------------------
+
+// #define LOG_CAIRO
+
+#ifdef LOG_CAIRO
+#define LOG(x) (x)
+#else
+#define LOG(x)
+#endif
+
+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);
+}
+
+
+#define MIN(a,b) (((a) < (b)) ? (a) : (b))
+#define MAX(a,b) (((a) > (b)) ? (a) : (b))
+
+
+//------------------------------------------------------------------------
+// CairoImage
+//------------------------------------------------------------------------
+
+CairoImage::CairoImage (double x1, double y1, double x2, double y2) {
+  this->image = NULL;
+  this->x1 = x1;
+  this->y1 = y1;
+  this->x2 = x2;
+  this->y2 = y2;
+}
+
+CairoImage::~CairoImage () {
+  if (image)
+    cairo_surface_destroy (image);
+}
+
+void CairoImage::setImage (cairo_surface_t *image) {
+  if (this->image)
+    cairo_surface_destroy (this->image);
+  this->image = cairo_surface_reference (image);
+}
+
+//------------------------------------------------------------------------
+// CairoOutputDev
+//------------------------------------------------------------------------
+
+// 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;
+
+CairoOutputDev::CairoOutputDev() {
+  doc = NULL;
+
+  if (!ft_lib_initialized) {
+    FT_Init_FreeType(&ft_lib);
+    ft_lib_initialized = gTrue;
+  }
+
+  fontEngine = NULL;
+  fontEngine_owner = gFalse;
+  glyphs = NULL;
+  fill_pattern = NULL;
+  fill_color.r = fill_color.g = fill_color.b = 0;
+  stroke_pattern = NULL;
+  stroke_color.r = stroke_color.g = stroke_color.b = 0;
+  stroke_opacity = 1.0;
+  fill_opacity = 1.0;
+  textClipPath = NULL;
+  strokePathClip = NULL;
+  cairo = NULL;
+  currentFont = NULL;
+  prescaleImages = gTrue;
+  printing = gTrue;
+  use_show_text_glyphs = gFalse;
+  inType3Char = gFalse;
+  t3_glyph_has_bbox = gFalse;
+
+  groupColorSpaceStack = NULL;
+  maskStack = NULL;
+  group = NULL;
+  mask = NULL;
+  shape = NULL;
+  cairo_shape = NULL;
+  knockoutCount = 0;
+
+  text = NULL;
+  actualText = NULL;
+
+  // the SA parameter supposedly defaults to false, but Acrobat
+  // apparently hardwires it to true
+  stroke_adjust = globalParams->getStrokeAdjust();
+  align_stroke_coords = gFalse;
+  adjusted_stroke_width = gFalse;
+}
+
+CairoOutputDev::~CairoOutputDev() {
+  if (fontEngine_owner && fontEngine) {
+    delete fontEngine;
+  }
+
+  if (cairo)
+    cairo_destroy (cairo);
+  cairo_pattern_destroy (stroke_pattern);
+  cairo_pattern_destroy (fill_pattern);
+  if (group)
+    cairo_pattern_destroy (group);
+  if (mask)
+    cairo_pattern_destroy (mask);
+  if (shape)
+    cairo_pattern_destroy (shape);
+  if (text) 
+    text->decRefCnt();
+  if (actualText)
+    delete actualText;  
+}
+
+void CairoOutputDev::setCairo(cairo_t *cairo)
+{
+  if (this->cairo != NULL) {
+    cairo_status_t status = cairo_status (this->cairo);
+    if (status) {
+      error(errInternal, -1, "cairo context error: {0:s}\n", cairo_status_to_string(status));
+    }
+    cairo_destroy (this->cairo);
+    assert(!cairo_shape);
+  }
+  if (cairo != NULL) {
+    this->cairo = cairo_reference (cairo);
+	/* 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 {
+    this->cairo = NULL;
+    this->cairo_shape = NULL;
+  }
+}
+
+void CairoOutputDev::setTextPage(TextPage *text)
+{
+  if (this->text) 
+    this->text->decRefCnt();
+  if (actualText)
+    delete actualText;
+  if (text) {
+    this->text = text;
+    this->text->incRefCnt();
+    actualText = new ActualText(text);
+  } else {
+    this->text = NULL;
+    actualText = NULL;
+  }
+}
+
+void CairoOutputDev::startDoc(PDFDoc *docA,
+			      CairoFontEngine *parentFontEngine) {
+  doc = docA;
+  if (parentFontEngine) {
+    fontEngine = parentFontEngine;
+  } else {
+    if (fontEngine) {
+      delete fontEngine;
+    }
+    fontEngine = new CairoFontEngine(ft_lib);
+    fontEngine_owner = gTrue;
+  }
+}
+
+void CairoOutputDev::startPage(int pageNum, GfxState *state) {
+  /* set up some per page defaults */
+  cairo_pattern_destroy(fill_pattern);
+  cairo_pattern_destroy(stroke_pattern);
+
+  fill_pattern = cairo_pattern_create_rgb(0., 0., 0.);
+  stroke_pattern = cairo_pattern_reference(fill_pattern);
+
+  if (text)
+    text->startPage(state);
+}
+
+void CairoOutputDev::endPage() {
+  if (text) {
+    text->endPage();
+    text->coalesce(gTrue, 0, gFalse);
+  }
+}
+
+void CairoOutputDev::saveState(GfxState *state) {
+  LOG(printf ("save\n"));
+  cairo_save (cairo);
+  if (cairo_shape)
+      cairo_save (cairo_shape);
+
+  MaskStack *ms = new MaskStack;
+  ms->mask = cairo_pattern_reference(mask);
+  ms->mask_matrix = mask_matrix;
+  ms->next = maskStack;
+  maskStack = ms;
+}
+
+void CairoOutputDev::restoreState(GfxState *state) {
+  LOG(printf ("restore\n"));
+  cairo_restore (cairo);
+  if (cairo_shape)
+      cairo_restore (cairo_shape);
+
+  /* These aren't restored by cairo_restore() since we keep them in
+   * the output device. */
+  updateFillColor(state);
+  updateStrokeColor(state);
+  updateFillOpacity(state);
+  updateStrokeOpacity(state);
+  updateBlendMode(state);
+
+  MaskStack* ms = maskStack;
+  if (ms) {
+    if (mask)
+      cairo_pattern_destroy(mask);
+    mask = ms->mask;
+    mask_matrix = ms->mask_matrix;
+    maskStack = ms->next;
+    delete ms;
+  }
+}
+
+void CairoOutputDev::updateAll(GfxState *state) {
+  updateLineDash(state);
+  updateLineJoin(state);
+  updateLineCap(state);
+  updateLineWidth(state);
+  updateFlatness(state);
+  updateMiterLimit(state);
+  updateFillColor(state);
+  updateStrokeColor(state);
+  updateFillOpacity(state);
+  updateStrokeOpacity(state);
+  updateBlendMode(state);
+  needFontUpdate = gTrue;
+  if (text)
+    text->updateFont(state);
+}
+
+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];
+
+  cairo_transform (cairo, &matrix);
+  if (cairo_shape)
+      cairo_transform (cairo_shape, &matrix);
+
+  OutputDev::setDefaultCTM(ctm);
+}
+
+void CairoOutputDev::updateCTM(GfxState *state, double m11, double m12,
+				double m21, double m22,
+				double m31, double m32) {
+  cairo_matrix_t matrix, invert_matrix;
+  matrix.xx = m11;
+  matrix.yx = m12;
+  matrix.xy = m21;
+  matrix.yy = m22;
+  matrix.x0 = m31;
+  matrix.y0 = m32;
+
+  /* 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
+   * instead of having to invert the matrix. */
+  invert_matrix = matrix;
+  if (cairo_matrix_invert(&invert_matrix)) {
+    error(errSyntaxWarning, -1, "matrix not invertible\n");
+    return;
+  }
+
+  cairo_transform (cairo, &matrix);
+  if (cairo_shape)
+    cairo_transform (cairo_shape, &matrix);
+  updateLineDash(state);
+  updateLineJoin(state);
+  updateLineCap(state);
+  updateLineWidth(state);
+}
+
+void CairoOutputDev::updateLineDash(GfxState *state) {
+  double *dashPattern;
+  int dashLength;
+  double dashStart;
+
+  state->getLineDash(&dashPattern, &dashLength, &dashStart);
+  cairo_set_dash (cairo, dashPattern, dashLength, dashStart);
+  if (cairo_shape)
+    cairo_set_dash (cairo_shape, dashPattern, dashLength, dashStart);
+}
+
+void CairoOutputDev::updateFlatness(GfxState *state) {
+  // cairo_set_tolerance (cairo, state->getFlatness());
+}
+
+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;
+  }
+  if (cairo_shape)
+    cairo_set_line_join (cairo_shape, cairo_get_line_join(cairo));
+}
+
+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;
+  }
+  if (cairo_shape)
+    cairo_set_line_cap (cairo_shape, cairo_get_line_cap(cairo));
+}
+
+void CairoOutputDev::updateMiterLimit(GfxState *state) {
+  cairo_set_miter_limit (cairo, state->getMiterLimit());
+  if (cairo_shape)
+    cairo_set_miter_limit (cairo_shape, state->getMiterLimit());
+}
+
+void CairoOutputDev::updateLineWidth(GfxState *state) {
+  LOG(printf ("line width: %f\n", state->getLineWidth()));
+  adjusted_stroke_width = gFalse;
+  double width = state->getLineWidth();
+  if (stroke_adjust && !printing) {
+    double x, y;
+    x = y = width;
+
+    /* find out line width in device units */
+    cairo_user_to_device_distance(cairo, &x, &y);
+    if (fabs(x) <= 1.0 && fabs(y) <= 1.0) {
+      /* adjust width to at least one device pixel */
+      x = y = 1.0;
+      cairo_device_to_user_distance(cairo, &x, &y);
+      width = MIN(fabs(x),fabs(y));
+      adjusted_stroke_width = gTrue;
+    }
+  } else if (width == 0.0) {
+    /* Cairo does not support 0 line width == 1 device pixel. 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;
+    if (printing) {
+      // assume printer pixel size is 1/600 inch
+      x = 72.0/600;
+      y = 72.0/600;
+    }
+    cairo_device_to_user_distance(cairo, &x, &y);
+    width = MIN(fabs(x),fabs(y));
+  }
+  cairo_set_line_width (cairo, width);
+  if (cairo_shape)
+    cairo_set_line_width (cairo_shape, cairo_get_line_width (cairo));
+}
+
+void CairoOutputDev::updateFillColor(GfxState *state) {
+  GfxRGB color = fill_color;
+
+  state->getFillRGB(&fill_color);
+  if (cairo_pattern_get_type (fill_pattern) != CAIRO_PATTERN_TYPE_SOLID ||
+      color.r != fill_color.r ||
+      color.g != fill_color.g ||
+      color.b != fill_color.b)
+  {
+    cairo_pattern_destroy(fill_pattern);
+    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
+					     colToDbl(fill_color.g),
+					     colToDbl(fill_color.b),
+					     fill_opacity);
+
+    LOG(printf ("fill color: %d %d %d\n",
+		fill_color.r, fill_color.g, fill_color.b));
+  }
+}
+
+void CairoOutputDev::updateStrokeColor(GfxState *state) {
+  GfxRGB color = stroke_color;
+
+  state->getStrokeRGB(&stroke_color);
+  if (cairo_pattern_get_type (fill_pattern) != CAIRO_PATTERN_TYPE_SOLID ||
+      color.r != stroke_color.r ||
+      color.g != stroke_color.g ||
+      color.b != stroke_color.b)
+  {
+    cairo_pattern_destroy(stroke_pattern);
+    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
+					       colToDbl(stroke_color.g),
+					       colToDbl(stroke_color.b),
+					       stroke_opacity);
+
+    LOG(printf ("stroke color: %d %d %d\n",
+		stroke_color.r, stroke_color.g, stroke_color.b));
+  }
+}
+
+void CairoOutputDev::updateFillOpacity(GfxState *state) {
+  double opacity = fill_opacity;
+
+  fill_opacity = state->getFillOpacity();
+  if (opacity != fill_opacity) {
+    cairo_pattern_destroy(fill_pattern);
+    fill_pattern = cairo_pattern_create_rgba(colToDbl(fill_color.r),
+					     colToDbl(fill_color.g),
+					     colToDbl(fill_color.b),
+					     fill_opacity);
+
+    LOG(printf ("fill opacity: %f\n", fill_opacity));
+  }
+}
+
+void CairoOutputDev::updateStrokeOpacity(GfxState *state) {
+  double opacity = stroke_opacity;
+
+  stroke_opacity = state->getStrokeOpacity();
+  if (opacity != stroke_opacity) {
+    cairo_pattern_destroy(stroke_pattern);
+    stroke_pattern = cairo_pattern_create_rgba(colToDbl(stroke_color.r),
+					       colToDbl(stroke_color.g),
+					       colToDbl(stroke_color.b),
+					       stroke_opacity);
+
+    LOG(printf ("stroke opacity: %f\n", stroke_opacity));
+  }
+}
+
+void CairoOutputDev::updateFillColorStop(GfxState *state, double offset) {
+  state->getFillRGB(&fill_color);
+
+  cairo_pattern_add_color_stop_rgba(fill_pattern, offset,
+				    colToDbl(fill_color.r),
+				    colToDbl(fill_color.g),
+				    colToDbl(fill_color.b),
+				    fill_opacity);
+  LOG(printf ("fill color stop: %f (%d, %d, %d)\n",
+	      offset, fill_color.r, fill_color.g, fill_color.b));
+}
+
+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()));
+}
+
+void CairoOutputDev::updateFont(GfxState *state) {
+  cairo_font_face_t *font_face;
+  cairo_matrix_t matrix, invert_matrix;
+
+  LOG(printf ("updateFont() font=%s\n", state->getFont()->getName()->getCString()));
+
+  needFontUpdate = gFalse;
+
+  //FIXME: use cairo font engine?
+  if (text)
+    text->updateFont(state);
+  
+  currentFont = fontEngine->getFont (state->getFont(), doc, printing);
+
+  if (!currentFont)
+    return;
+
+  font_face = currentFont->getFontFace();
+  cairo_set_font_face (cairo, font_face);
+
+  use_show_text_glyphs = state->getFont()->hasToUnicodeCMap() &&
+    cairo_surface_has_show_text_glyphs (cairo_get_target (cairo));
+ 
+  double fontSize = state->getFontSize();
+  double *m = state->getTextMat();
+  /* 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;
+  matrix.xy = -m[2] * fontSize;
+  matrix.yy = -m[3] * fontSize;
+  matrix.x0 = 0;
+  matrix.y0 = 0;
+
+  LOG(printf ("font matrix: %f %f %f %f\n", matrix.xx, matrix.yx, matrix.xy, matrix.yy));
+
+ /* 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)) {
+    error(errSyntaxWarning, -1, "font matrix not invertible\n");
+    return;
+  }
+
+  cairo_set_font_matrix (cairo, &matrix);
+}
+
+/* Tolerance in pixels for checking if strokes are horizontal or vertical
+ * lines in device space */
+#define STROKE_COORD_TOLERANCE 0.5
+
+/* Align stroke coordinate i if the point is the start or end of a
+ * horizontal or vertical line */
+void CairoOutputDev::alignStrokeCoords(GfxSubpath *subpath, int i, double *x, double *y)
+{
+  double x1, y1, x2, y2;
+  GBool align = gFalse;
+
+  x1 = subpath->getX(i);
+  y1 = subpath->getY(i);
+  cairo_user_to_device (cairo, &x1, &y1);
+
+  // Does the current coord and prev coord form a horiz or vert line?
+  if (i > 0 && !subpath->getCurve(i - 1)) {
+    x2 = subpath->getX(i - 1);
+    y2 = subpath->getY(i - 1);
+    cairo_user_to_device (cairo, &x2, &y2);
+    if (fabs(x2 - x1) < STROKE_COORD_TOLERANCE || fabs(y2 - y1) < STROKE_COORD_TOLERANCE)
+      align = gTrue;
+  }
+
+  // Does the current coord and next coord form a horiz or vert line?
+  if (i < subpath->getNumPoints() - 1 && !subpath->getCurve(i + 1)) {
+    x2 = subpath->getX(i + 1);
+    y2 = subpath->getY(i + 1);
+    cairo_user_to_device (cairo, &x2, &y2);
+    if (fabs(x2 - x1) < STROKE_COORD_TOLERANCE || fabs(y2 - y1) < STROKE_COORD_TOLERANCE)
+      align = gTrue;
+  }
+
+  *x = subpath->getX(i);
+  *y = subpath->getY(i);
+  if (align) {
+    /* see http://www.cairographics.org/FAQ/#sharp_lines */
+    cairo_user_to_device (cairo, x, y);
+    *x = floor(*x) + 0.5;
+    *y = floor(*y) + 0.5;
+    cairo_device_to_user (cairo, x, y);
+  }
+}
+
+#undef STROKE_COORD_TOLERANCE
+
+void CairoOutputDev::doPath(cairo_t *cairo, GfxState *state, GfxPath *path) {
+  GfxSubpath *subpath;
+  int i, j;
+  double x, y;
+  cairo_new_path (cairo);
+  for (i = 0; i < path->getNumSubpaths(); ++i) {
+    subpath = path->getSubpath(i);
+    if (subpath->getNumPoints() > 0) {
+      if (align_stroke_coords) {
+        alignStrokeCoords(subpath, 0, &x, &y);
+      } else {
+        x = subpath->getX(0);
+        y = subpath->getY(0);
+      }
+      cairo_move_to (cairo, x, y);
+      j = 1;
+      while (j < subpath->getNumPoints()) {
+	if (subpath->getCurve(j)) {
+	  if (align_stroke_coords) {
+            alignStrokeCoords(subpath, j + 2, &x, &y);
+          } else {
+            x = subpath->getX(j+2);
+            y = subpath->getY(j+2);
+          }
+	  cairo_curve_to( cairo,
+			  subpath->getX(j), subpath->getY(j),
+			  subpath->getX(j+1), subpath->getY(j+1),
+			  x, y);
+
+	  j += 3;
+	} else {
+	  if (align_stroke_coords) {
+            alignStrokeCoords(subpath, j, &x, &y);
+          } else {
+            x = subpath->getX(j);
+            y = subpath->getY(j);
+          }
+          cairo_line_to (cairo, x, y);
+	  ++j;
+	}
+      }
+      if (subpath->isClosed()) {
+	LOG (printf ("close\n"));
+	cairo_close_path (cairo);
+      }
+    }
+  }
+}
+
+void CairoOutputDev::stroke(GfxState *state) {
+  if (inType3Char) {
+      GfxGray gray;
+      state->getFillGray(&gray);
+      if (colToDbl(gray) > 0.5)
+	  return;
+  }
+
+  if (adjusted_stroke_width)
+    align_stroke_coords = gTrue;
+  doPath (cairo, state, state->getPath());
+  align_stroke_coords = gFalse;
+  cairo_set_source (cairo, stroke_pattern);
+  LOG(printf ("stroke\n"));
+  cairo_stroke (cairo);
+  if (cairo_shape) {
+    doPath (cairo_shape, state, state->getPath());
+    cairo_stroke (cairo_shape);
+  }
+}
+
+void CairoOutputDev::fill(GfxState *state) {
+  if (inType3Char) {
+      GfxGray gray;
+      state->getFillGray(&gray);
+      if (colToDbl(gray) > 0.5)
+	  return;
+  }
+
+  doPath (cairo, state, state->getPath());
+  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
+  cairo_set_source (cairo, fill_pattern);
+  LOG(printf ("fill\n"));
+  //XXX: how do we get the path
+  if (mask) {
+    cairo_save (cairo);
+    cairo_clip (cairo);
+    cairo_set_matrix (cairo, &mask_matrix);
+    cairo_mask (cairo, mask);
+    cairo_restore (cairo);
+  } else if (strokePathClip) {
+    fillToStrokePathClip(state);
+  } else {
+    cairo_fill (cairo);
+  }
+  if (cairo_shape) {
+    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_WINDING);
+    doPath (cairo_shape, state, state->getPath());
+    cairo_fill (cairo_shape);
+  }
+}
+
+void CairoOutputDev::eoFill(GfxState *state) {
+  doPath (cairo, state, state->getPath());
+  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
+  cairo_set_source (cairo, fill_pattern);
+  LOG(printf ("fill-eo\n"));
+  cairo_fill (cairo);
+
+  if (cairo_shape) {
+    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_EVEN_ODD);
+    doPath (cairo_shape, state, state->getPath());
+    cairo_fill (cairo_shape);
+  }
+
+}
+
+GBool CairoOutputDev::tilingPatternFill(GfxState *state, Gfx *gfx1, Catalog *cat, Object *str,
+					double *pmat, int paintType, int /*tilingType*/, Dict *resDict,
+					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;
+  double width, height;
+  int surface_width, surface_height;
+  StrokePathClip *strokePathTmp;
+
+  width = bbox[2] - bbox[0];
+  height = bbox[3] - bbox[1];
+
+  if (xStep != width || yStep != height)
+    return gFalse;
+  /* TODO: implement the other cases here too */
+
+  surface_width = (int) ceil (width);
+  surface_height = (int) ceil (height);
+
+  surface = cairo_surface_create_similar (cairo_get_target (cairo),
+					  CAIRO_CONTENT_COLOR_ALPHA,
+					  surface_width, surface_height);
+  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];
+  strokePathTmp = strokePathClip;
+  strokePathClip = NULL;
+  gfx = new Gfx(doc, this, resDict, &box, NULL);
+  gfx->display(str);
+  delete gfx;
+  strokePathClip = strokePathTmp;
+
+  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);
+
+  cairo_matrix_init_scale (&matrix, surface_width / width, surface_height / height);
+  cairo_pattern_set_matrix (pattern, &matrix);
+
+  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);
+  if (strokePathClip) {
+    fillToStrokePathClip(state);
+  } else {
+    cairo_fill (cairo);
+  }
+
+  cairo_pattern_destroy (pattern);
+
+  return gTrue;
+}
+
+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);
+  if (!shading->getExtend0() && !shading->getExtend1())
+    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_NONE);
+  else
+    cairo_pattern_set_extend (fill_pattern, CAIRO_EXTEND_PAD);
+
+  LOG (printf ("axial-sh\n"));
+
+  // TODO: use the actual stops in the shading in the case
+  // of linear interpolation (Type 2 Exponential functions with N=1)
+  return gFalse;
+}
+
+GBool CairoOutputDev::axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading)
+{
+  return (shading->getExtend0() == shading->getExtend1());
+}
+
+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);
+
+  LOG (printf ("radial-sh\n"));
+
+  return gFalse;
+}
+
+GBool CairoOutputDev::radialShadedSupportExtend(GfxState *state, GfxRadialShading *shading)
+{
+  return (shading->getExtend0() == shading->getExtend1());
+}
+
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
+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_mesh_pattern_begin_patch (fill_pattern);
+
+    cairo_mesh_pattern_move_to (fill_pattern, x0, y0);
+    cairo_mesh_pattern_line_to (fill_pattern, x1, y1);
+    cairo_mesh_pattern_line_to (fill_pattern, x2, y2);
+
+    for (j = 0; j < 3; j++) {
+	shading->getColorSpace()->getRGB(&color[j], &rgb);
+	cairo_mesh_pattern_set_corner_color_rgb (fill_pattern, j,
+						 colToDbl(rgb.r),
+						 colToDbl(rgb.g),
+						 colToDbl(rgb.b));
+    }
+
+    cairo_mesh_pattern_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_mesh_pattern_begin_patch (fill_pattern);
+
+    cairo_mesh_pattern_move_to (fill_pattern, patch->x[0][0], patch->y[0][0]);
+    cairo_mesh_pattern_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_mesh_pattern_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_mesh_pattern_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_mesh_pattern_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_mesh_pattern_set_control_point (fill_pattern, 0, patch->x[1][1], patch->y[1][1]);
+    cairo_mesh_pattern_set_control_point (fill_pattern, 1, patch->x[1][2], patch->y[1][2]);
+    cairo_mesh_pattern_set_control_point (fill_pattern, 2, patch->x[2][2], patch->y[2][2]);
+    cairo_mesh_pattern_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_mesh_pattern_set_corner_color_rgb (fill_pattern, j,
+					       colToDbl(rgb.r),
+					       colToDbl(rgb.g),
+					       colToDbl(rgb.b));
+    }
+    cairo_mesh_pattern_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;
+}
+#endif /* CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0) */
+
+void CairoOutputDev::clip(GfxState *state) {
+  doPath (cairo, state, state->getPath());
+  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_WINDING);
+  cairo_clip (cairo);
+  LOG (printf ("clip\n"));
+  if (cairo_shape) {
+    doPath (cairo_shape, state, state->getPath());
+    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_WINDING);
+    cairo_clip (cairo_shape);
+  }
+}
+
+void CairoOutputDev::eoClip(GfxState *state) {
+  doPath (cairo, state, state->getPath());
+  cairo_set_fill_rule (cairo, CAIRO_FILL_RULE_EVEN_ODD);
+  cairo_clip (cairo);
+  LOG (printf ("clip-eo\n"));
+  if (cairo_shape) {
+    doPath (cairo_shape, state, state->getPath());
+    cairo_set_fill_rule (cairo_shape, CAIRO_FILL_RULE_EVEN_ODD);
+    cairo_clip (cairo_shape);
+  }
+
+}
+
+void CairoOutputDev::clipToStrokePath(GfxState *state) {
+  LOG(printf("clip-to-stroke-path\n"));
+  strokePathClip = (StrokePathClip*)gmalloc (sizeof(*strokePathClip));
+  strokePathClip->path = state->getPath()->copy();
+  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(GfxState *state) {
+  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);
+  doPath (cairo, state, strokePathClip->path);
+  cairo_stroke (cairo);
+
+  cairo_restore (cairo);
+
+  delete strokePathClip->path;
+  if (strokePathClip->dashes)
+    gfree (strokePathClip->dashes);
+  gfree (strokePathClip);
+  strokePathClip = NULL;
+}
+
+void CairoOutputDev::beginString(GfxState *state, GooString *s)
+{
+  int len = s->getLength();
+
+  if (needFontUpdate)
+    updateFont(state);
+
+  if (!currentFont)
+    return;
+
+  glyphs = (cairo_glyph_t *) gmallocn (len, sizeof (cairo_glyph_t));
+  glyphCount = 0;
+  if (use_show_text_glyphs) {
+    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;
+  }
+}
+
+void CairoOutputDev::drawChar(GfxState *state, double x, double y,
+			      double dx, double dy,
+			      double originX, double originY,
+			      CharCode code, int nBytes, Unicode *u, int uLen)
+{
+  if (currentFont) {
+    glyphs[glyphCount].index = currentFont->getGlyph (code, u, uLen);
+    glyphs[glyphCount].x = x - originX;
+    glyphs[glyphCount].y = y - originY;
+    glyphCount++;
+    if (use_show_text_glyphs) {
+      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++;
+    }
+  }
+
+  if (!text)
+    return;
+  actualText->addChar (state, x, y, dx, dy, code, nBytes, u, uLen);
+}
+
+void CairoOutputDev::endString(GfxState *state)
+{
+  int render;
+
+  if (!currentFont)
+    return;
+
+  // 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;
+
+  // ignore empty strings and invisible text -- this is used by
+  // Acrobat Capture
+  render = state->getRender();
+  if (render == 3 || glyphCount == 0) {
+    gfree(glyphs);
+    glyphs = NULL;
+    return;
+  }
+
+  if (!(render & 1)) {
+    LOG (printf ("fill string\n"));
+    cairo_set_source (cairo, fill_pattern);
+    if (use_show_text_glyphs)
+      cairo_show_text_glyphs (cairo, utf8, utf8Count, glyphs, glyphCount, clusters, clusterCount, (cairo_text_cluster_flags_t)0);
+    else
+        cairo_show_glyphs (cairo, glyphs, glyphCount);
+    if (cairo_shape)
+      cairo_show_glyphs (cairo_shape, glyphs, glyphCount);
+  }
+
+  // stroke
+  if ((render & 3) == 1 || (render & 3) == 2) {
+    LOG (printf ("stroke string\n"));
+    cairo_set_source (cairo, stroke_pattern);
+    cairo_glyph_path (cairo, glyphs, glyphCount);
+    cairo_stroke (cairo);
+    if (cairo_shape) {
+      cairo_glyph_path (cairo_shape, glyphs, glyphCount);
+      cairo_stroke (cairo_shape);
+    }
+  }
+
+  // clip
+  if ((render & 4)) {
+    LOG (printf ("clip string\n"));
+    // append the glyph path to textClipPath.
+
+    // set textClipPath as the currentPath
+    if (textClipPath) {
+      cairo_append_path (cairo, textClipPath);
+      if (cairo_shape) {
+	cairo_append_path (cairo_shape, textClipPath);
+      }
+      cairo_path_destroy (textClipPath);
+    }
+    
+    // append the glyph path
+    cairo_glyph_path (cairo, glyphs, glyphCount);
+   
+    // move the path back into textClipPath 
+    // and clear the current path
+    textClipPath = cairo_copy_path (cairo);
+    cairo_new_path (cairo);
+    if (cairo_shape) {
+      cairo_new_path (cairo_shape);
+    }
+  }
+
+  gfree (glyphs);
+  glyphs = NULL;
+  if (use_show_text_glyphs) {
+    gfree (clusters);
+    clusters = NULL;
+    gfree (utf8);
+    utf8 = NULL;
+  }
+}
+
+
+GBool CairoOutputDev::beginType3Char(GfxState *state, double x, double y,
+				      double dx, double dy,
+				      CharCode code, Unicode *u, int uLen) {
+
+  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];
+  /* 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);
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+    cairo_set_matrix(cairo_shape, &orig_matrix);
+    cairo_transform(cairo_shape, &matrix);
+  }
+  cairo_pattern_destroy(stroke_pattern);
+  cairo_pattern_reference(fill_pattern);
+  stroke_pattern = fill_pattern;
+  return gFalse;
+}
+
+void CairoOutputDev::endType3Char(GfxState *state) {
+  cairo_restore (cairo);
+  if (cairo_shape) {
+    cairo_restore (cairo_shape);
+  }
+}
+
+void CairoOutputDev::type3D0(GfxState *state, double wx, double wy) {
+  t3_glyph_wx = wx;
+  t3_glyph_wy = wy;
+}
+
+void CairoOutputDev::type3D1(GfxState *state, double wx, double wy,
+			     double llx, double lly, double urx, double ury) {
+  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;
+}
+
+void CairoOutputDev::beginTextObject(GfxState *state) {
+}
+
+void CairoOutputDev::endTextObject(GfxState *state) {
+  if (textClipPath) {
+    // clip the accumulated text path
+    cairo_append_path (cairo, textClipPath);
+    cairo_clip (cairo);
+    if (cairo_shape) {
+      cairo_append_path (cairo_shape, textClipPath);
+      cairo_clip (cairo_shape);
+    }
+    cairo_path_destroy (textClipPath);
+    textClipPath = NULL;
+  }
+}
+
+void CairoOutputDev::beginActualText(GfxState *state, GooString *text)
+{
+  if (this->text)
+    actualText->begin(state, text);
+}
+
+void CairoOutputDev::endActualText(GfxState *state)
+{
+  if (text)
+    actualText->end(state);
+}
+
+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);
+}
+
+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;
+}
+
+
+
+void CairoOutputDev::beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
+                                      GfxColorSpace * blendingColorSpace,
+                                      GBool /*isolated*/, GBool knockout,
+				      GBool forSoftMask) {
+  /* push color space */
+  ColorSpaceStack* css = new ColorSpaceStack;
+  css->cs = blendingColorSpace;
+  css->knockout = knockout;
+  cairo_get_matrix(cairo, &css->group_matrix);
+  css->next = groupColorSpaceStack;
+  groupColorSpaceStack = css;
+
+  LOG(printf ("begin transparency group. knockout: %s\n", knockout ? "yes":"no"));
+
+  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);
+  }
+  if (0 && forSoftMask)
+    cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
+  else
+    cairo_push_group (cairo);
+
+  /* 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);
+  }
+}
+
+void CairoOutputDev::endTransparencyGroup(GfxState * /*state*/) {
+  if (group)
+    cairo_pattern_destroy(group);
+  group = cairo_pop_group (cairo);
+
+  LOG(printf ("end transparency group\n"));
+
+  if (groupColorSpaceStack->next && groupColorSpaceStack->next->knockout) {
+    if (shape)
+      cairo_pattern_destroy(shape);
+    shape = cairo_pop_group (cairo_shape);
+  }
+}
+
+void CairoOutputDev::paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) {
+  LOG(printf ("paint transparency group\n"));
+
+  cairo_save (cairo);
+  cairo_set_matrix (cairo, &groupColorSpaceStack->group_matrix);
+  cairo_set_source (cairo, group);
+
+  if (!mask) {
+    //XXX: deal with mask && shape case
+    if (shape) {
+      cairo_save (cairo);
+
+      /* OPERATOR_SOURCE w/ a mask is defined as (src IN mask) ADD (dest OUT mask)
+       * however our source has already been clipped to mask so we only need to
+       * do ADD and OUT */
+
+      /* clear the shape mask */
+      cairo_set_source (cairo, shape);
+      cairo_set_operator (cairo, CAIRO_OPERATOR_DEST_OUT);
+      cairo_paint (cairo);
+
+      cairo_set_operator (cairo, CAIRO_OPERATOR_ADD);
+      cairo_set_source (cairo, group);
+      cairo_paint (cairo);
+
+      cairo_restore (cairo);
+
+      cairo_pattern_destroy (shape);
+      shape = NULL;
+    } else {
+      cairo_paint_with_alpha (cairo, fill_opacity);
+    }
+    cairo_status_t status = cairo_status(cairo);
+    if (status)
+      printf("BAD status: %s\n", cairo_status_to_string(status));
+  } else {
+    if (fill_opacity < 1.0) {
+      cairo_push_group(cairo);
+    }
+    cairo_save(cairo);
+    cairo_set_matrix(cairo, &mask_matrix);
+    cairo_mask(cairo, mask);
+    cairo_restore(cairo);
+    if (fill_opacity < 1.0) {
+      cairo_pop_group_to_source(cairo);
+      cairo_paint_with_alpha (cairo, fill_opacity);
+    }
+    cairo_pattern_destroy(mask);
+    mask = NULL;
+  }
+
+  popTransparencyGroup();
+  cairo_restore(cairo);
+}
+
+static int luminocity(uint32_t x)
+{
+  int r = (x >> 16) & 0xff;
+  int g = (x >>  8) & 0xff;
+  int b = (x >>  0) & 0xff;
+  // an arbitrary integer approximation of .3*r + .59*g + .11*b
+  int y = (r*19661+g*38666+b*7209 + 32829)>>16;
+  return y;
+}
+
+
+/* XXX: do we need to deal with shape here? */
+void CairoOutputDev::setSoftMask(GfxState * state, double * bbox, GBool alpha,
+                                 Function * transferFunc, GfxColor * backdropColor) {
+  cairo_pattern_destroy(mask);
+
+  LOG(printf ("set softMask\n"));
+
+  if (alpha == false) {
+    /* We need to mask according to the luminocity of the group.
+     * So we paint the group to an image surface convert it to a luminocity map
+     * and then use that as the mask. */
+
+    /* Get clip extents in device space */
+    double x1, y1, x2, y2, x_min, y_min, x_max, y_max;
+    cairo_clip_extents(cairo, &x1, &y1, &x2, &y2);
+    cairo_user_to_device(cairo, &x1, &y1);
+    cairo_user_to_device(cairo, &x2, &y2);
+    x_min = MIN(x1, x2);
+    y_min = MIN(y1, y2);
+    x_max = MAX(x1, x2);
+    y_max = MAX(y1, y2);
+    cairo_clip_extents(cairo, &x1, &y1, &x2, &y2);
+    cairo_user_to_device(cairo, &x1, &y2);
+    cairo_user_to_device(cairo, &x2, &y1);
+    x_min = MIN(x_min,MIN(x1, x2));
+    y_min = MIN(y_min,MIN(y1, y2));
+    x_max = MAX(x_max,MAX(x1, x2));
+    y_max = MAX(y_max,MAX(y1, y2));
+
+    int width = (int)(ceil(x_max) - floor(x_min));
+    int height = (int)(ceil(y_max) - floor(y_min));
+
+    /* Get group device offset */
+    double x_offset, y_offset;
+    if (cairo_get_group_target(cairo) == cairo_get_target(cairo)) {
+      cairo_surface_get_device_offset(cairo_get_group_target(cairo), &x_offset, &y_offset);
+    } else {
+      cairo_surface_t *pats;
+      cairo_pattern_get_surface(group, &pats);
+      cairo_surface_get_device_offset(pats, &x_offset, &y_offset);
+    }
+
+    /* Adjust extents by group offset */
+    x_min += x_offset;
+    y_min += y_offset;
+
+    cairo_surface_t *source = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, width, height);
+    cairo_t *maskCtx = cairo_create(source);
+
+    //XXX: hopefully this uses the correct color space */
+    GfxRGB backdropColorRGB;
+    groupColorSpaceStack->cs->getRGB(backdropColor, &backdropColorRGB);
+    /* paint the backdrop */
+    cairo_set_source_rgb(maskCtx,
+			 colToDbl(backdropColorRGB.r),
+			 colToDbl(backdropColorRGB.g),
+			 colToDbl(backdropColorRGB.b));
+    cairo_paint(maskCtx);
+
+    /* Copy source ctm to mask ctm and translate origin so that the
+     * mask appears it the same location on the source surface.  */
+    cairo_matrix_t mat, tmat;
+    cairo_matrix_init_translate(&tmat, -x_min, -y_min);
+    cairo_get_matrix(cairo, &mat);
+    cairo_matrix_multiply(&mat, &mat, &tmat);
+    cairo_set_matrix(maskCtx, &mat);
+
+    /* make the device offset of the new mask match that of the group */
+    cairo_surface_set_device_offset(source, x_offset, y_offset);
+
+    /* paint the group */
+    cairo_set_source(maskCtx, group);
+    cairo_paint(maskCtx);
+
+    /* XXX status = cairo_status(maskCtx); */
+    cairo_destroy(maskCtx);
+
+    /* convert to a luminocity map */
+    uint32_t *source_data = (uint32_t*)cairo_image_surface_get_data(source);
+    /* get stride in units of 32 bits */
+    int stride = cairo_image_surface_get_stride(source)/4;
+    for (int y=0; y<height; y++) {
+      for (int x=0; x<width; x++) {
+	int lum;
+	lum = luminocity(source_data[y*stride + x]);
+	if (transferFunc) {
+	  double lum_in, lum_out;
+	  lum_in = lum/256.0;
+	  transferFunc->transform(&lum_in, &lum_out);
+	  lum = (int)(lum_out * 255.0 + 0.5);
+	}
+	source_data[y*stride + x] = lum << 24;
+      }
+    }
+    cairo_surface_mark_dirty (source);
+
+    /* setup the new mask pattern */
+    mask = cairo_pattern_create_for_surface(source);
+    cairo_get_matrix(cairo, &mask_matrix);
+
+    if (cairo_get_group_target(cairo) == cairo_get_target(cairo)) {
+      cairo_pattern_set_matrix(mask, &mat);
+    } else {
+      cairo_matrix_t patMatrix;
+      cairo_pattern_get_matrix(group, &patMatrix);
+      /* Apply x_min, y_min offset to it appears in the same location as source. */
+      cairo_matrix_multiply(&patMatrix, &patMatrix, &tmat);
+      cairo_pattern_set_matrix(mask, &patMatrix);
+    }
+
+    cairo_surface_destroy(source);
+  } else {
+    mask = cairo_pattern_reference(group);
+    cairo_get_matrix(cairo, &mask_matrix);
+  }
+
+  popTransparencyGroup();
+}
+
+void CairoOutputDev::popTransparencyGroup() {
+  /* pop color space */
+  ColorSpaceStack *css = groupColorSpaceStack;
+  if (css->knockout) {
+    knockoutCount--;
+    if (!knockoutCount) {
+      /* we don't need to track the shape anymore because
+       * we are not above any knockout groups */
+      cairo_destroy(cairo_shape);
+      cairo_shape = NULL;
+    }
+  }
+  groupColorSpaceStack = css->next;
+  delete css;
+}
+
+
+void CairoOutputDev::clearSoftMask(GfxState * /*state*/) {
+  if (mask)
+    cairo_pattern_destroy(mask);
+  mask = NULL;
+}
+
+/* Taken from cairo/doc/tutorial/src/singular.c */
+static void
+get_singular_values (const cairo_matrix_t *matrix,
+		     double               *major,
+		     double               *minor)
+{
+	double xx = matrix->xx, xy = matrix->xy;
+	double yx = matrix->yx, yy = matrix->yy;
+
+	double a = xx*xx+yx*yx;
+	double b = xy*xy+yy*yy;
+	double k = xx*xy+yx*yy;
+
+	double f = (a+b) * .5;
+	double g = (a-b) * .5;
+	double delta = sqrt (g*g + k*k);
+
+	if (major)
+		*major = sqrt (f + delta);
+	if (minor)
+		*minor = sqrt (f - delta);
+}
+
+void CairoOutputDev::getScaledSize(int  orig_width,
+				   int  orig_height,
+				   int *scaledWidth,
+				   int *scaledHeight) {
+  cairo_matrix_t matrix;
+  cairo_get_matrix(cairo, &matrix);
+
+  double xScale;
+  double yScale;
+  if (orig_width > orig_height)
+    get_singular_values (&matrix, &xScale, &yScale);
+  else
+    get_singular_values (&matrix, &yScale, &xScale);
+
+  int tx, tx2, ty, ty2; /* the integer co-oridinates of the resulting image */
+  if (xScale >= 0) {
+    tx = splashRound(matrix.x0 - 0.01);
+    tx2 = splashRound(matrix.x0 + xScale + 0.01) - 1;
+  } else {
+    tx = splashRound(matrix.x0 + 0.01) - 1;
+    tx2 = splashRound(matrix.x0 + xScale - 0.01);
+  }
+  *scaledWidth = abs(tx2 - tx) + 1;
+  //scaledWidth = splashRound(fabs(xScale));
+  if (*scaledWidth == 0) {
+    // technically, this should draw nothing, but it generally seems
+    // better to draw a one-pixel-wide stripe rather than throwing it
+    // away
+    *scaledWidth = 1;
+  }
+  if (yScale >= 0) {
+    ty = splashFloor(matrix.y0 + 0.01);
+    ty2 = splashCeil(matrix.y0 + yScale - 0.01);
+  } else {
+    ty = splashCeil(matrix.y0 - 0.01);
+    ty2 = splashFloor(matrix.y0 + yScale + 0.01);
+  }
+  *scaledHeight = abs(ty2 - ty);
+  if (*scaledHeight == 0) {
+    *scaledHeight = 1;
+  }
+}
+
+cairo_surface_t *CairoOutputDev::downscaleSurface(cairo_surface_t *orig_surface) {
+  cairo_surface_t *dest_surface;
+  unsigned char *dest_buffer;
+  int dest_stride;
+  unsigned char *orig_buffer;
+  int orig_width, orig_height;
+  int orig_stride;
+  int scaledHeight;
+  int scaledWidth;
+  GBool res;
+
+  if (printing)
+    return NULL;
+
+  orig_width = cairo_image_surface_get_width (orig_surface);
+  orig_height = cairo_image_surface_get_height (orig_surface);
+  getScaledSize (orig_width, orig_height, &scaledWidth, &scaledHeight);
+  if (scaledWidth >= orig_width || scaledHeight >= orig_height)
+    return NULL;
+
+  dest_surface = cairo_surface_create_similar (orig_surface,
+					       cairo_surface_get_content (orig_surface),
+					       scaledWidth, scaledHeight);
+  dest_buffer = cairo_image_surface_get_data (dest_surface);
+  dest_stride = cairo_image_surface_get_stride (dest_surface);
+
+  orig_buffer = cairo_image_surface_get_data (orig_surface);
+  orig_stride = cairo_image_surface_get_stride (orig_surface);
+
+  res = downscale_box_filter((uint32_t *)orig_buffer,
+			     orig_stride, orig_width, orig_height,
+			     scaledWidth, scaledHeight, 0, 0,
+			     scaledWidth, scaledHeight,
+			     (uint32_t *)dest_buffer, dest_stride);
+  if (!res) {
+    cairo_surface_destroy (dest_surface);
+    return NULL;
+  }
+
+  return dest_surface;
+
+}
+
+cairo_filter_t
+CairoOutputDev::getFilterForSurface(cairo_surface_t *image,
+				    GBool interpolate)
+{
+  if (interpolate)
+    return CAIRO_FILTER_BILINEAR;
+
+  int orig_width = cairo_image_surface_get_width (image);
+  int orig_height = cairo_image_surface_get_height (image);
+  if (orig_width == 0 || orig_height == 0)
+	  return CAIRO_FILTER_NEAREST;
+
+  int scaled_width, scaled_height;
+  getScaledSize (orig_width, orig_height, &scaled_width, &scaled_height);
+
+  /* When scale factor is >= 400% we don't interpolate. See bugs #25268, #9860 */
+  if (scaled_width / orig_width >= 4 || scaled_height / orig_height >= 4)
+	  return CAIRO_FILTER_NEAREST;
+
+  return CAIRO_FILTER_BILINEAR;
+}
+
+void CairoOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
+				   int width, int height, GBool invert,
+				   GBool interpolate, GBool inlineImg) {
+
+  /* FIXME: Doesn't the image mask support any colorspace? */
+  cairo_set_source (cairo, fill_pattern);
+
+  /* work around a cairo bug when scaling 1x1 surfaces */
+  if (width == 1 && height == 1) {
+    ImageStream *imgStr;
+    Guchar pix;
+    int invert_bit;
+
+    imgStr = new ImageStream(str, width, 1, 1);
+    imgStr->reset();
+    imgStr->getPixel(&pix);
+    imgStr->close();
+    delete imgStr;
+
+    invert_bit = invert ? 1 : 0;
+    if (pix ^ invert_bit)
+      return;
+
+    cairo_save (cairo);
+    cairo_rectangle (cairo, 0., 0., width, height);
+    cairo_fill (cairo);
+    cairo_restore (cairo);
+    if (cairo_shape) {
+      cairo_save (cairo_shape);
+      cairo_rectangle (cairo_shape, 0., 0., width, height);
+      cairo_fill (cairo_shape);
+      cairo_restore (cairo_shape);
+    }
+    return;
+  }
+
+  /* shape is 1.0 for painted areas, 0.0 for unpainted ones */
+
+  cairo_matrix_t matrix;
+  cairo_get_matrix (cairo, &matrix);
+  //XXX: it is possible that we should only do sub pixel positioning if 
+  // we are rendering fonts */
+  if (!printing && prescaleImages
+      /* not rotated */
+      && matrix.xy == 0 && matrix.yx == 0
+      /* axes not flipped / not 180 deg rotated */
+      && matrix.xx > 0 && (upsideDown() ? -1 : 1) * matrix.yy > 0) {
+    drawImageMaskPrescaled(state, ref, str, width, height, invert, interpolate, inlineImg);
+  } else {
+    drawImageMaskRegular(state, ref, str, width, height, invert, interpolate, inlineImg);
+  }
+
+}
+
+void CairoOutputDev::setSoftMaskFromImageMask(GfxState *state, Object *ref, Stream *str,
+				   int width, int height, GBool invert,
+				   GBool inlineImg, double *baseMatrix) {
+
+  /* FIXME: Doesn't the image mask support any colorspace? */
+  cairo_set_source (cairo, fill_pattern);
+
+  /* work around a cairo bug when scaling 1x1 surfaces */
+  if (width == 1 && height == 1) {
+    ImageStream *imgStr;
+    Guchar pix;
+    int invert_bit;
+
+    imgStr = new ImageStream(str, width, 1, 1);
+    imgStr->reset();
+    imgStr->getPixel(&pix);
+    imgStr->close();
+    delete imgStr;
+
+    invert_bit = invert ? 1 : 0;
+    if (pix ^ invert_bit)
+      return;
+
+    cairo_save (cairo);
+    cairo_rectangle (cairo, 0., 0., width, height);
+    cairo_fill (cairo);
+    cairo_restore (cairo);
+    if (cairo_shape) {
+      cairo_save (cairo_shape);
+      cairo_rectangle (cairo_shape, 0., 0., width, height);
+      cairo_fill (cairo_shape);
+      cairo_restore (cairo_shape);
+    }
+    return;
+  }
+
+  cairo_push_group_with_content (cairo, CAIRO_CONTENT_ALPHA);
+
+  /* shape is 1.0 for painted areas, 0.0 for unpainted ones */
+
+  cairo_matrix_t matrix;
+  cairo_get_matrix (cairo, &matrix);
+  //XXX: it is possible that we should only do sub pixel positioning if 
+  // we are rendering fonts */
+  if (!printing && prescaleImages && matrix.xy == 0.0 && matrix.yx == 0.0) {
+    drawImageMaskPrescaled(state, ref, str, width, height, invert, gFalse, inlineImg);
+  } else {
+    drawImageMaskRegular(state, ref, str, width, height, invert, gFalse, inlineImg);
+  }
+
+  if (state->getFillColorSpace()->getMode() == csPattern) {
+    cairo_set_source_rgb (cairo, 1, 1, 1);
+    cairo_set_matrix (cairo, &mask_matrix);
+    cairo_mask (cairo, mask);
+  }
+
+  if (mask)
+    cairo_pattern_destroy (mask);
+  mask = cairo_pop_group (cairo);
+
+  saveState(state);
+  double bbox[4] = {0,0,1,1}; // dummy
+  beginTransparencyGroup(state, bbox, state->getFillColorSpace(),
+                         gTrue, gFalse, gFalse);
+}
+
+void CairoOutputDev::unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix) {
+  double bbox[4] = {0,0,1,1}; // dummy
+
+  endTransparencyGroup(state);
+  restoreState(state);
+  paintTransparencyGroup(state, bbox);
+  clearSoftMask(state);
+}
+
+void CairoOutputDev::drawImageMaskRegular(GfxState *state, Object *ref, Stream *str,
+					  int width, int height, GBool invert,
+					  GBool interpolate, GBool inlineImg) {
+  unsigned char *buffer;
+  unsigned char *dest;
+  cairo_surface_t *image;
+  cairo_pattern_t *pattern;
+  int x, y, i, bit;
+  ImageStream *imgStr;
+  Guchar *pix;
+  cairo_matrix_t matrix;
+  int invert_bit;
+  int row_stride;
+  cairo_filter_t filter;
+
+  /* TODO: Do we want to cache these? */
+  imgStr = new ImageStream(str, width, 1, 1);
+  imgStr->reset();
+
+  image = cairo_image_surface_create (CAIRO_FORMAT_A1, width, height);
+  if (cairo_surface_status (image))
+    goto cleanup;
+
+  buffer = cairo_image_surface_get_data (image);
+  row_stride = cairo_image_surface_get_stride (image);
+
+  invert_bit = invert ? 1 : 0;
+
+  for (y = 0; y < height; y++) {
+    pix = imgStr->getLine();
+    dest = buffer + y * row_stride;
+    i = 0;
+    bit = 0;
+    for (x = 0; x < width; x++) {
+      if (bit == 0)
+	dest[i] = 0;
+      if (!(pix[x] ^ invert_bit)) {
+#ifdef WORDS_BIGENDIAN
+	dest[i] |= (1 << (7 - bit));
+#else
+	dest[i] |= (1 << bit);
+#endif
+      }
+      bit++;
+      if (bit > 7) {
+	bit = 0;
+	i++;
+      }
+    }
+  }
+
+  filter = getFilterForSurface (image, interpolate);
+
+  cairo_surface_mark_dirty (image);
+  pattern = cairo_pattern_create_for_surface (image);
+  cairo_surface_destroy (image);
+  if (cairo_pattern_status (pattern))
+    goto cleanup;
+
+  LOG (printf ("drawImageMask %dx%d\n", width, height));
+
+  cairo_pattern_set_filter (pattern, filter);
+
+  if (!printing)
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
+
+  cairo_matrix_init_translate (&matrix, 0, height);
+  cairo_matrix_scale (&matrix, width, -height);
+  cairo_pattern_set_matrix (pattern, &matrix);
+  if (cairo_pattern_status (pattern)) {
+    cairo_pattern_destroy (pattern);
+    goto cleanup;
+  }
+
+  if (state->getFillColorSpace()->getMode() == csPattern) {
+    mask = cairo_pattern_reference (pattern);
+    cairo_get_matrix (cairo, &mask_matrix);
+  } else if (!printing) {
+    cairo_save (cairo);
+    cairo_rectangle (cairo, 0., 0., 1., 1.);
+    cairo_clip (cairo);
+    cairo_mask (cairo, pattern);
+    cairo_restore (cairo);
+  } else {
+    cairo_mask (cairo, pattern);
+  }
+
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+    cairo_set_source (cairo_shape, pattern);
+    if (!printing) {
+      cairo_rectangle (cairo_shape, 0., 0., 1., 1.);
+      cairo_fill (cairo_shape);
+    } else {
+      cairo_mask (cairo_shape, pattern);
+    }
+    cairo_restore (cairo_shape);
+  }
+
+  cairo_pattern_destroy (pattern);
+
+cleanup:
+  imgStr->close();
+  delete imgStr;
+}
+
+
+void CairoOutputDev::drawImageMaskPrescaled(GfxState *state, Object *ref, Stream *str,
+					    int width, int height, GBool invert,
+					    GBool interpolate, GBool inlineImg) {
+  unsigned char *buffer;
+  cairo_surface_t *image;
+  cairo_pattern_t *pattern;
+  ImageStream *imgStr;
+  Guchar *pix;
+  cairo_matrix_t matrix;
+  int invert_bit;
+  int row_stride;
+
+  /* cairo does a very poor job of scaling down images so we scale them ourselves */
+
+  LOG (printf ("drawImageMaskPrescaled %dx%d\n", width, height));
+
+  /* this scaling code is adopted from the splash image scaling code */
+  cairo_get_matrix(cairo, &matrix);
+#if 0
+  printf("[%f %f], [%f %f], %f %f\n", matrix.xx, matrix.xy, matrix.yx, matrix.yy, matrix.x0, matrix.y0);
+#endif
+  /* this whole computation should be factored out */
+  double xScale = matrix.xx;
+  double yScale = matrix.yy;
+  int tx, tx2, ty, ty2; /* the integer co-oridinates of the resulting image */
+  int scaledHeight;
+  int scaledWidth;
+  if (xScale >= 0) {
+    tx = splashRound(matrix.x0 - 0.01);
+    tx2 = splashRound(matrix.x0 + xScale + 0.01) - 1;
+  } else {
+    tx = splashRound(matrix.x0 + 0.01) - 1;
+    tx2 = splashRound(matrix.x0 + xScale - 0.01);
+  }
+  scaledWidth = abs(tx2 - tx) + 1;
+  //scaledWidth = splashRound(fabs(xScale));
+  if (scaledWidth == 0) {
+    // technically, this should draw nothing, but it generally seems
+    // better to draw a one-pixel-wide stripe rather than throwing it
+    // away
+    scaledWidth = 1;
+  }
+  if (yScale >= 0) {
+    ty = splashFloor(matrix.y0 + 0.01);
+    ty2 = splashCeil(matrix.y0 + yScale - 0.01);
+  } else {
+    ty = splashCeil(matrix.y0 - 0.01);
+    ty2 = splashFloor(matrix.y0 + yScale + 0.01);
+  }
+  scaledHeight = abs(ty2 - ty);
+  if (scaledHeight == 0) {
+    scaledHeight = 1;
+  }
+#if 0
+  printf("xscale: %g, yscale: %g\n", xScale, yScale);
+  printf("width: %d, height: %d\n", width, height);
+  printf("scaledWidth: %d, scaledHeight: %d\n", scaledWidth, scaledHeight);
+#endif
+
+  /* compute the required padding */
+  /* Padding is used to preserve the aspect ratio.
+     We compute total_pad to make (height+total_pad)/scaledHeight as close to height/yScale as possible */
+  int head_pad = 0;
+  int tail_pad = 0;
+  int total_pad = splashRound(height*(scaledHeight/fabs(yScale)) - height);
+
+  /* compute the two pieces of padding */
+  if (total_pad > 0) {
+    //XXX: i'm not positive fabs() is correct
+    float tail_error = fabs(matrix.y0 - ty);
+    float head_error = fabs(ty2 - (matrix.y0 + yScale));
+    float tail_fraction = tail_error/(tail_error + head_error);
+    tail_pad = splashRound(total_pad*tail_fraction);
+    head_pad = total_pad - tail_pad;
+  } else {
+    tail_pad = 0;
+    head_pad = 0;
+  }
+  int origHeight = height;
+  height += tail_pad;
+  height += head_pad;
+#if 0
+  printf("head_pad: %d tail_pad: %d\n", head_pad, tail_pad);
+  printf("origHeight: %d height: %d\n", origHeight, height);
+  printf("ty: %d, ty2: %d\n", ty, ty2);
+#endif
+
+  /* TODO: Do we want to cache these? */
+  imgStr = new ImageStream(str, width, 1, 1);
+  imgStr->reset();
+
+  invert_bit = invert ? 1 : 0;
+
+  image = cairo_image_surface_create (CAIRO_FORMAT_A8, scaledWidth, scaledHeight);
+  if (cairo_surface_status (image)) {
+    imgStr->close();
+    delete imgStr;
+    return;
+  }
+
+  buffer = cairo_image_surface_get_data (image);
+  row_stride = cairo_image_surface_get_stride (image);
+
+  int yp = height / scaledHeight;
+  int yq = height % scaledHeight;
+  int xp = width / scaledWidth;
+  int xq = width % scaledWidth;
+  int yt = 0;
+  int origHeight_c = origHeight;
+  /* use MIN() because yp might be > origHeight because of padding */
+  unsigned char *pixBuf = (unsigned char *)malloc(MIN(yp+1, origHeight)*width);
+  int lastYStep = 1;
+  int total = 0;
+  for (int y = 0; y < scaledHeight; y++) {
+    // y scale Bresenham
+    int yStep = yp;
+    yt += yq;
+
+    if (yt >= scaledHeight) {
+      yt -= scaledHeight;
+      ++yStep;
+    }
+
+    // read row (s) from image ignoring the padding as appropriate
+    {
+      int n = (yp > 0) ? yStep : lastYStep;
+      total += n;
+      if (n > 0) {
+	unsigned char *p = pixBuf;
+	int head_pad_count = head_pad;
+	int origHeight_count = origHeight;
+	int tail_pad_count = tail_pad;
+	for (int i=0; i<n; i++) {
+	  // get row
+	  if (head_pad_count) {
+	    head_pad_count--;
+	  } else if (origHeight_count) {
+	    pix = imgStr->getLine();
+	    for (int j=0; j<width; j++) {
+	      if (pix[j] ^ invert_bit)
+		p[j] = 0;
+	      else
+		p[j] = 255;
+	    }
+	    origHeight_count--;
+	    p += width;
+	  } else if (tail_pad_count) {
+	    tail_pad_count--;
+	  } else {
+	    printf("%d %d\n", n, total);
+	    assert(0 && "over run\n");
+	  }
+	}
+      }
+    }
+
+    lastYStep = yStep;
+    int k1 = y;
+
+    int xt = 0;
+    int xSrc = 0;
+    int x1 = k1;
+    int n = yStep > 0 ? yStep : 1;
+    int origN = n;
+
+    /* compute the size of padding and pixels that will be used for this row */
+    int head_pad_size = MIN(n, head_pad);
+    n -= head_pad_size;
+    head_pad -= MIN(head_pad_size, yStep);
+
+    int pix_size = MIN(n, origHeight);
+    n -= pix_size;
+    origHeight -= MIN(pix_size, yStep);
+
+    int tail_pad_size = MIN(n, tail_pad);
+    n -= tail_pad_size;
+    tail_pad -= MIN(tail_pad_size, yStep);
+    if (n != 0) {
+      printf("n = %d (%d %d %d)\n", n, head_pad_size, pix_size, tail_pad_size);
+      assert(n == 0);
+    }
+
+    for (int x = 0; x < scaledWidth; ++x) {
+      int xStep = xp;
+      xt += xq;
+      if (xt >= scaledWidth) {
+	xt -= scaledWidth;
+	++xStep;
+      }
+      int m = xStep > 0 ? xStep : 1;
+      float pixAcc0 = 0;
+      /* could m * head_pad_size * tail_pad_size  overflow? */
+      if (invert_bit) {
+	pixAcc0 += m * head_pad_size * tail_pad_size * 255;
+      } else {
+	pixAcc0 += m * head_pad_size * tail_pad_size * 0;
+      }
+      /* Accumulate all of the source pixels for the destination pixel */
+      for (int i = 0; i < pix_size; ++i) {
+	for (int j = 0; j< m; ++j) {
+	  if (xSrc + i*width + j > MIN(yp + 1, origHeight_c)*width) {
+	    printf("%d > %d (%d %d %d %d) (%d %d %d)\n", xSrc + i*width + j, MIN(yp + 1, origHeight_c)*width, xSrc, i , width, j, yp, origHeight_c, width);
+	    printf("%d %d %d\n", head_pad_size, pix_size, tail_pad_size);
+	    assert(0 && "bad access\n");
+	  }
+	  pixAcc0 += pixBuf[xSrc + i*width + j];
+	}
+      }
+      buffer[y * row_stride + x] = splashFloor(pixAcc0 / (origN*m));
+      xSrc += xStep;
+      x1 += 1;
+    }
+
+  }
+  free(pixBuf);
+
+  cairo_surface_mark_dirty (image);
+  pattern = cairo_pattern_create_for_surface (image);
+  cairo_surface_destroy (image);
+  if (cairo_pattern_status (pattern)) {
+    imgStr->close();
+    delete imgStr;
+    return;
+  }
+
+  /* we should actually be using CAIRO_FILTER_NEAREST here. However,
+   * cairo doesn't yet do minifaction filtering causing scaled down
+   * images with CAIRO_FILTER_NEAREST to look really bad */
+  cairo_pattern_set_filter (pattern,
+			    interpolate ? CAIRO_FILTER_BEST : CAIRO_FILTER_FAST);
+  cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
+
+  if (state->getFillColorSpace()->getMode() == csPattern) {
+    cairo_matrix_init_translate (&matrix, 0, scaledHeight);
+    cairo_matrix_scale (&matrix, scaledWidth, -scaledHeight);
+    cairo_pattern_set_matrix (pattern, &matrix);
+    if (cairo_pattern_status (pattern)) {
+      cairo_pattern_destroy (pattern);
+      imgStr->close();
+      delete imgStr;
+      return;
+    }
+
+    mask = cairo_pattern_reference (pattern);
+    cairo_get_matrix (cairo, &mask_matrix);
+  } else {
+    cairo_save (cairo);
+
+    /* modify our current transformation so that the prescaled image
+     * goes where it is supposed to */
+    cairo_get_matrix(cairo, &matrix);
+    cairo_scale(cairo, 1.0/matrix.xx, 1.0/matrix.yy);
+    // get integer co-ords
+    cairo_translate (cairo, tx - matrix.x0, ty2 - matrix.y0);
+    if (yScale > 0)
+      cairo_scale(cairo, 1, -1);
+
+    cairo_rectangle (cairo, 0., 0., scaledWidth, scaledHeight);
+    cairo_clip (cairo);
+    cairo_mask (cairo, pattern);
+
+    //cairo_get_matrix(cairo, &matrix);
+    //printf("mask at: [%f %f], [%f %f], %f %f\n\n", matrix.xx, matrix.xy, matrix.yx, matrix.yy, matrix.x0, matrix.y0);
+    cairo_restore(cairo);
+  }
+
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+
+    /* modify our current transformation so that the prescaled image
+     * goes where it is supposed to */
+    cairo_get_matrix(cairo_shape, &matrix);
+    cairo_scale(cairo_shape, 1.0/matrix.xx, 1.0/matrix.yy);
+    // get integer co-ords
+    cairo_translate (cairo_shape, tx - matrix.x0, ty2 - matrix.y0);
+    if (yScale > 0)
+      cairo_scale(cairo_shape, 1, -1);
+
+    cairo_rectangle (cairo_shape, 0., 0., scaledWidth, scaledHeight);
+    cairo_fill (cairo_shape);
+
+    cairo_restore(cairo_shape);
+  }
+
+  cairo_pattern_destroy (pattern);
+
+  imgStr->close();
+  delete imgStr;
+}
+
+void CairoOutputDev::drawMaskedImage(GfxState *state, Object *ref,
+				     Stream *str, int width, int height,
+				     GfxImageColorMap *colorMap,
+				     GBool interpolate,
+				     Stream *maskStr, int maskWidth,
+				     int maskHeight, GBool maskInvert,
+				     GBool maskInterpolate)
+{
+  ImageStream *maskImgStr, *imgStr;
+  int row_stride;
+  unsigned char *maskBuffer, *buffer;
+  unsigned char *maskDest;
+  unsigned int *dest;
+  cairo_surface_t *maskImage, *image;
+  cairo_pattern_t *maskPattern, *pattern;
+  cairo_matrix_t matrix;
+  cairo_matrix_t maskMatrix;
+  Guchar *pix;
+  int x, y;
+  int invert_bit;
+  cairo_filter_t filter;
+  cairo_filter_t maskFilter;
+
+  maskImgStr = new ImageStream(maskStr, maskWidth, 1, 1);
+  maskImgStr->reset();
+
+  maskImage = cairo_image_surface_create (CAIRO_FORMAT_A8, maskWidth, maskHeight);
+  if (cairo_surface_status (maskImage)) {
+    maskImgStr->close();
+    delete maskImgStr;
+    return;
+  }
+
+  maskBuffer = cairo_image_surface_get_data (maskImage);
+  row_stride = cairo_image_surface_get_stride (maskImage);
+
+  invert_bit = maskInvert ? 1 : 0;
+
+  for (y = 0; y < maskHeight; y++) {
+    pix = maskImgStr->getLine();
+    maskDest = maskBuffer + y * row_stride;
+    for (x = 0; x < maskWidth; x++) {
+      if (pix[x] ^ invert_bit)
+	*maskDest++ = 0;
+      else
+	*maskDest++ = 255;
+    }
+  }
+
+  maskImgStr->close();
+  delete maskImgStr;
+
+  maskFilter = getFilterForSurface (maskImage, maskInterpolate);
+
+  cairo_surface_mark_dirty (maskImage);
+  maskPattern = cairo_pattern_create_for_surface (maskImage);
+  cairo_surface_destroy (maskImage);
+  if (cairo_pattern_status (maskPattern))
+    return;
+
+#if 0
+  /* ICCBased color space doesn't do any color correction
+   * so check its underlying color space as well */
+  int is_identity_transform;
+  is_identity_transform = colorMap->getColorSpace()->getMode() == csDeviceRGB ||
+		  (colorMap->getColorSpace()->getMode() == csICCBased && 
+		   ((GfxICCBasedColorSpace*)colorMap->getColorSpace())->getAlt()->getMode() == csDeviceRGB);
+#endif
+
+  /* TODO: Do we want to cache these? */
+  imgStr = new ImageStream(str, width,
+			   colorMap->getNumPixelComps(),
+			   colorMap->getBits());
+  imgStr->reset();
+
+  image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
+  if (cairo_surface_status (image))
+    goto cleanup;
+
+  buffer = cairo_image_surface_get_data (image);
+  row_stride = cairo_image_surface_get_stride (image);
+  for (y = 0; y < height; y++) {
+    dest = (unsigned int *) (buffer + y * row_stride);
+    pix = imgStr->getLine();
+    colorMap->getRGBLine (pix, dest, width);
+  }
+
+  filter = getFilterForSurface (image, interpolate);
+
+  cairo_surface_mark_dirty (image);
+  pattern = cairo_pattern_create_for_surface (image);
+  cairo_surface_destroy (image);
+  if (cairo_pattern_status (pattern))
+    goto cleanup;
+
+  LOG (printf ("drawMaskedImage %dx%d\n", width, height));
+
+  cairo_pattern_set_filter (pattern, filter);
+  cairo_pattern_set_filter (maskPattern, maskFilter);
+
+  if (!printing) {
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
+    cairo_pattern_set_extend (maskPattern, CAIRO_EXTEND_PAD);
+  }
+
+  cairo_matrix_init_translate (&matrix, 0, height);
+  cairo_matrix_scale (&matrix, width, -height);
+  cairo_pattern_set_matrix (pattern, &matrix);
+  if (cairo_pattern_status (pattern)) {
+    cairo_pattern_destroy (pattern);
+    cairo_pattern_destroy (maskPattern);
+    goto cleanup;
+  }
+
+  cairo_matrix_init_translate (&maskMatrix, 0, maskHeight);
+  cairo_matrix_scale (&maskMatrix, maskWidth, -maskHeight);
+  cairo_pattern_set_matrix (maskPattern, &maskMatrix);
+  if (cairo_pattern_status (maskPattern)) {
+    cairo_pattern_destroy (maskPattern);
+    cairo_pattern_destroy (pattern);
+    goto cleanup;
+  }
+
+  if (!printing) {
+    cairo_save (cairo);
+    cairo_set_source (cairo, pattern);
+    cairo_rectangle (cairo, 0., 0., 1., 1.);
+    cairo_clip (cairo);
+    cairo_mask (cairo, maskPattern);
+    cairo_restore (cairo);
+  } else {
+    cairo_set_source (cairo, pattern);
+    cairo_mask (cairo, maskPattern);
+  }
+
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+    cairo_set_source (cairo_shape, pattern);
+    if (!printing) {
+      cairo_rectangle (cairo_shape, 0., 0., 1., 1.);
+      cairo_fill (cairo_shape);
+    } else {
+      cairo_mask (cairo_shape, pattern);
+    }
+    cairo_restore (cairo_shape);
+  }
+
+  cairo_pattern_destroy (maskPattern);
+  cairo_pattern_destroy (pattern);
+
+cleanup:
+  imgStr->close();
+  delete imgStr;
+}
+
+
+//XXX: is this affect by AIS(alpha is shape)?
+void CairoOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
+					 int width, int height,
+					 GfxImageColorMap *colorMap,
+					 GBool interpolate,
+					 Stream *maskStr,
+					 int maskWidth, int maskHeight,
+					 GfxImageColorMap *maskColorMap,
+					 GBool maskInterpolate)
+{
+  ImageStream *maskImgStr, *imgStr;
+  int row_stride;
+  unsigned char *maskBuffer, *buffer;
+  unsigned char *maskDest;
+  unsigned int *dest;
+  cairo_surface_t *maskImage, *image;
+  cairo_pattern_t *maskPattern, *pattern;
+  cairo_matrix_t maskMatrix, matrix;
+  Guchar *pix;
+  int y;
+  cairo_filter_t filter;
+  cairo_filter_t maskFilter;
+
+  maskImgStr = new ImageStream(maskStr, maskWidth,
+			       maskColorMap->getNumPixelComps(),
+			       maskColorMap->getBits());
+  maskImgStr->reset();
+
+  maskImage = cairo_image_surface_create (CAIRO_FORMAT_A8, maskWidth, maskHeight);
+  if (cairo_surface_status (maskImage)) {
+    maskImgStr->close();
+    delete maskImgStr;
+    return;
+  }
+
+  maskBuffer = cairo_image_surface_get_data (maskImage);
+  row_stride = cairo_image_surface_get_stride (maskImage);
+  for (y = 0; y < maskHeight; y++) {
+    maskDest = (unsigned char *) (maskBuffer + y * row_stride);
+    pix = maskImgStr->getLine();
+    maskColorMap->getGrayLine (pix, maskDest, maskWidth);
+  }
+
+  maskImgStr->close();
+  delete maskImgStr;
+
+  maskFilter = getFilterForSurface (maskImage, maskInterpolate);
+
+  cairo_surface_mark_dirty (maskImage);
+  maskPattern = cairo_pattern_create_for_surface (maskImage);
+  cairo_surface_destroy (maskImage);
+  if (cairo_pattern_status (maskPattern))
+    return;
+
+#if 0
+  /* ICCBased color space doesn't do any color correction
+   * so check its underlying color space as well */
+  int is_identity_transform;
+  is_identity_transform = colorMap->getColorSpace()->getMode() == csDeviceRGB ||
+		  (colorMap->getColorSpace()->getMode() == csICCBased &&
+		   ((GfxICCBasedColorSpace*)colorMap->getColorSpace())->getAlt()->getMode() == csDeviceRGB);
+#endif
+
+  /* TODO: Do we want to cache these? */
+  imgStr = new ImageStream(str, width,
+			   colorMap->getNumPixelComps(),
+			   colorMap->getBits());
+  imgStr->reset();
+
+  image = cairo_image_surface_create (CAIRO_FORMAT_RGB24, width, height);
+  if (cairo_surface_status (image))
+    goto cleanup;
+
+  buffer = cairo_image_surface_get_data (image);
+  row_stride = cairo_image_surface_get_stride (image);
+  for (y = 0; y < height; y++) {
+    dest = (unsigned int *) (buffer + y * row_stride);
+    pix = imgStr->getLine();
+    colorMap->getRGBLine (pix, dest, width);
+  }
+
+  filter = getFilterForSurface (image, interpolate);
+
+  cairo_surface_mark_dirty (image);
+
+  setMimeData(str, ref, image);
+
+  pattern = cairo_pattern_create_for_surface (image);
+  cairo_surface_destroy (image);
+  if (cairo_pattern_status (pattern))
+    goto cleanup;
+
+  LOG (printf ("drawSoftMaskedImage %dx%d\n", width, height));
+
+  cairo_pattern_set_filter (pattern, filter);
+  cairo_pattern_set_filter (maskPattern, maskFilter);
+
+  if (!printing) {
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
+    cairo_pattern_set_extend (maskPattern, CAIRO_EXTEND_PAD);
+  }
+
+  cairo_matrix_init_translate (&matrix, 0, height);
+  cairo_matrix_scale (&matrix, width, -height);
+  cairo_pattern_set_matrix (pattern, &matrix);
+  if (cairo_pattern_status (pattern)) {
+    cairo_pattern_destroy (pattern);
+    cairo_pattern_destroy (maskPattern);
+    goto cleanup;
+  }
+
+  cairo_matrix_init_translate (&maskMatrix, 0, maskHeight);
+  cairo_matrix_scale (&maskMatrix, maskWidth, -maskHeight);
+  cairo_pattern_set_matrix (maskPattern, &maskMatrix);
+  if (cairo_pattern_status (maskPattern)) {
+    cairo_pattern_destroy (maskPattern);
+    cairo_pattern_destroy (pattern);
+    goto cleanup;
+  }
+
+  if (fill_opacity != 1.0)
+    cairo_push_group (cairo);
+  else
+    cairo_save (cairo);
+
+  cairo_set_source (cairo, pattern);
+  if (!printing) {
+    cairo_rectangle (cairo, 0., 0.,
+		     MIN (width, maskWidth) / (double)width,
+		     MIN (height, maskHeight) / (double)height);
+    cairo_clip (cairo);
+  }
+  cairo_mask (cairo, maskPattern);
+
+  if (fill_opacity != 1.0) {
+    cairo_pop_group_to_source (cairo);
+    cairo_save (cairo);
+    if (!printing) {
+      cairo_rectangle (cairo, 0., 0.,
+		       MIN (width, maskWidth) / (double)width,
+		       MIN (height, maskHeight) / (double)height);
+      cairo_clip (cairo);
+    }
+    cairo_paint_with_alpha (cairo, fill_opacity);
+  }
+  cairo_restore (cairo);
+
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+    cairo_set_source (cairo_shape, pattern);
+    if (!printing) {
+      cairo_rectangle (cairo_shape, 0., 0.,
+		       MIN (width, maskWidth) / (double)width,
+		       MIN (height, maskHeight) / (double)height);
+      cairo_fill (cairo_shape);
+    } else {
+      cairo_mask (cairo_shape, pattern);
+    }
+    cairo_restore (cairo_shape);
+  }
+
+  cairo_pattern_destroy (maskPattern);
+  cairo_pattern_destroy (pattern);
+
+cleanup:
+  imgStr->close();
+  delete imgStr;
+}
+
+GBool CairoOutputDev::getStreamData (Stream *str, char **buffer, int *length)
+{
+  int len, i;
+  char *strBuffer;
+
+  len = 0;
+  str->close();
+  str->reset();
+  while (str->getChar() != EOF) len++;
+  if (len == 0)
+    return gFalse;
+
+  strBuffer = (char *)gmalloc (len);
+
+  str->close();
+  str->reset();
+  for (i = 0; i < len; ++i)
+    strBuffer[i] = str->getChar();
+
+  *buffer = strBuffer;
+  *length = len;
+
+  return gTrue;
+}
+
+void CairoOutputDev::setMimeData(Stream *str, Object *ref, cairo_surface_t *image)
+{
+  char *strBuffer;
+  int len;
+  Object obj;
+
+  if (!printing || !(str->getKind() == strDCT || str->getKind() == strJPX))
+    return;
+
+  // colorspace in stream dict may be different from colorspace in jpx
+  // data
+  if (str->getKind() == strJPX) {
+    GBool hasColorSpace = !str->getDict()->lookup("ColorSpace", &obj)->isNull();
+    obj.free();
+    if (hasColorSpace)
+      return;
+  }
+
+  if (getStreamData (str->getNextStream(), &strBuffer, &len)) {
+    cairo_status_t st;
+
+#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 11, 2)
+    if (ref && ref->isRef()) {
+      Ref imgRef = ref->getRef();
+      GooString *surfaceId = new GooString("poppler-surface-");
+      surfaceId->appendf("{0:d}-{1:d}", imgRef.gen, imgRef.num);
+      char *idBuffer = copyString(surfaceId->getCString());
+      st = cairo_surface_set_mime_data (image, CAIRO_MIME_TYPE_UNIQUE_ID,
+                                        (const unsigned char *)idBuffer,
+                                        surfaceId->getLength(),
+                                        gfree, idBuffer);
+      if (st)
+        gfree(idBuffer);
+      delete surfaceId;
+    }
+#endif
+
+    st = cairo_surface_set_mime_data (image,
+				      str->getKind() == strDCT ?
+				      CAIRO_MIME_TYPE_JPEG : CAIRO_MIME_TYPE_JP2,
+				      (const unsigned char *)strBuffer, len,
+				      gfree, strBuffer);
+    if (st)
+      gfree (strBuffer);
+  }
+}
+
+void CairoOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
+			       int width, int height,
+			       GfxImageColorMap *colorMap,
+			       GBool interpolate,
+			       int *maskColors, GBool inlineImg)
+{
+  cairo_surface_t *image;
+  cairo_pattern_t *pattern, *maskPattern;
+  ImageStream *imgStr;
+  cairo_matrix_t matrix;
+  unsigned char *buffer;
+  int stride, i;
+  GfxRGB *lookup = NULL;
+  cairo_filter_t filter = CAIRO_FILTER_BILINEAR;
+
+  /* TODO: Do we want to cache these? */
+  imgStr = new ImageStream(str, width,
+			   colorMap->getNumPixelComps(),
+			   colorMap->getBits());
+  imgStr->reset();
+
+#if 0
+  /* ICCBased color space doesn't do any color correction
+   * so check its underlying color space as well */
+  int is_identity_transform;
+  is_identity_transform = colorMap->getColorSpace()->getMode() == csDeviceRGB ||
+		  (colorMap->getColorSpace()->getMode() == csICCBased &&
+		   ((GfxICCBasedColorSpace*)colorMap->getColorSpace())->getAlt()->getMode() == csDeviceRGB);
+#endif
+
+  image = cairo_image_surface_create (maskColors ?
+				      CAIRO_FORMAT_ARGB32 :
+				      CAIRO_FORMAT_RGB24,
+				      width, height);
+  if (cairo_surface_status (image))
+    goto cleanup;
+
+  // special case for one-channel (monochrome/gray/separation) images:
+  // build a lookup table here
+  if (colorMap->getNumPixelComps() == 1) {
+    int n;
+    Guchar pix;
+
+    n = 1 << colorMap->getBits();
+    lookup = (GfxRGB *)gmallocn(n, sizeof(GfxRGB));
+    for (i = 0; i < n; ++i) {
+      pix = (Guchar)i;
+
+      colorMap->getRGB(&pix, &lookup[i]);
+    }
+  }
+
+  buffer = cairo_image_surface_get_data (image);
+  stride = cairo_image_surface_get_stride (image);
+  for (int y = 0; y < height; y++) {
+    uint32_t *dest = (uint32_t *) (buffer + y * stride);
+    Guchar *pix = imgStr->getLine();
+
+    if (lookup) {
+      Guchar *p = pix;
+      GfxRGB rgb;
+
+      for (i = 0; i < width; i++) {
+        rgb = lookup[*p];
+        dest[i] =
+		((int) colToByte(rgb.r) << 16) |
+		((int) colToByte(rgb.g) << 8) |
+		((int) colToByte(rgb.b) << 0);
+	p++;
+      }
+    } else {
+      colorMap->getRGBLine (pix, dest, width);
+    }
+
+    if (maskColors) {
+      for (int x = 0; x < width; x++) {
+	bool is_opaque = false;
+	for (int i = 0; i < colorMap->getNumPixelComps(); ++i) {
+	  if (pix[i] < maskColors[2*i] ||
+	      pix[i] > maskColors[2*i+1]) {
+	    is_opaque = true;
+	    break;
+	  }
+	}
+	if (is_opaque)
+	  *dest |= 0xff000000;
+	else
+	  *dest = 0;
+	dest++;
+	pix += colorMap->getNumPixelComps();
+      }
+    }
+  }
+  gfree(lookup);
+
+  LOG (printf ("drawImage %dx%d\n", width, height));
+
+  cairo_surface_t *scaled_surface;
+
+  scaled_surface = downscaleSurface (image);
+  if (scaled_surface) {
+    if (cairo_surface_status (scaled_surface))
+      goto cleanup;
+    cairo_surface_destroy (image);
+    image = scaled_surface;
+    width = cairo_image_surface_get_width (image);
+    height = cairo_image_surface_get_height (image);
+  } else {
+    filter = getFilterForSurface (image, interpolate);
+  }
+
+  cairo_surface_mark_dirty (image);
+
+  if (!inlineImg) /* don't read stream twice if it is an inline image */
+    setMimeData(str, ref, image);
+
+  pattern = cairo_pattern_create_for_surface (image);
+  cairo_surface_destroy (image);
+  if (cairo_pattern_status (pattern))
+    goto cleanup;
+
+  cairo_pattern_set_filter (pattern, filter);
+
+  if (!printing)
+    cairo_pattern_set_extend (pattern, CAIRO_EXTEND_PAD);
+
+  cairo_matrix_init_translate (&matrix, 0, height);
+  cairo_matrix_scale (&matrix, width, -height);
+  cairo_pattern_set_matrix (pattern, &matrix);
+  if (cairo_pattern_status (pattern)) {
+    cairo_pattern_destroy (pattern);
+    goto cleanup;
+  }
+
+  if (!mask && fill_opacity != 1.0) {
+    maskPattern = cairo_pattern_create_rgba (1., 1., 1., fill_opacity);
+  } else if (mask) {
+    maskPattern = cairo_pattern_reference (mask);
+  } else {
+    maskPattern = NULL;
+  }
+
+  cairo_save (cairo);
+  cairo_set_source (cairo, pattern);
+  if (!printing)
+    cairo_rectangle (cairo, 0., 0., 1., 1.);
+  if (maskPattern) {
+    if (!printing)
+      cairo_clip (cairo);
+    cairo_set_matrix (cairo, &mask_matrix);
+    cairo_mask (cairo, maskPattern);
+  } else {
+    if (printing)
+      cairo_paint (cairo);
+    else
+      cairo_fill (cairo);
+  }
+  cairo_restore (cairo);
+
+  cairo_pattern_destroy (maskPattern);
+
+  if (cairo_shape) {
+    cairo_save (cairo_shape);
+    cairo_set_source (cairo_shape, pattern);
+    if (printing) {
+      cairo_paint (cairo_shape);
+    } else {
+      cairo_rectangle (cairo_shape, 0., 0., 1., 1.);
+      cairo_fill (cairo_shape);
+    }
+    cairo_restore (cairo_shape);
+  }
+
+  cairo_pattern_destroy (pattern);
+
+cleanup:
+  imgStr->close();
+  delete imgStr;
+}
+
+
+//------------------------------------------------------------------------
+// ImageOutputDev
+//------------------------------------------------------------------------
+
+CairoImageOutputDev::CairoImageOutputDev()
+{
+  images = NULL;
+  numImages = 0;
+  size = 0;
+  imgDrawCbk = NULL;
+  imgDrawCbkData = NULL;
+}
+
+CairoImageOutputDev::~CairoImageOutputDev()
+{
+  int i;
+
+  for (i = 0; i < numImages; i++)
+    delete images[i];
+  gfree (images);
+}
+
+void CairoImageOutputDev::saveImage(CairoImage *image)
+{ 
+  if (numImages >= size) {
+	  size += 16;
+	  images = (CairoImage **) greallocn (images, size, sizeof (CairoImage *));
+  }
+  images[numImages++] = image;
+}	
+
+void CairoImageOutputDev::drawImageMask(GfxState *state, Object *ref, Stream *str,
+					int width, int height, GBool invert,
+					GBool interpolate, GBool inlineImg)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  double x1, y1, x2, y2;
+  double *ctm;
+  double mat[6];
+  CairoImage *image;
+
+  ctm = state->getCTM();
+  
+  mat[0] = ctm[0];
+  mat[1] = ctm[1];
+  mat[2] = -ctm[2];
+  mat[3] = -ctm[3];
+  mat[4] = ctm[2] + ctm[4];
+  mat[5] = ctm[3] + ctm[5];
+  x1 = mat[4];
+  y1 = mat[5];
+  x2 = x1 + width;
+  y2 = y1 + height;
+
+  image = new CairoImage (x1, y1, x2, y2);
+  saveImage (image);
+
+  if (imgDrawCbk && imgDrawCbk (numImages - 1, imgDrawCbkData)) {
+    surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    cr = cairo_create (surface);
+    setCairo (cr);
+    cairo_translate (cr, 0, height);
+    cairo_scale (cr, width, -height);
+
+    CairoOutputDev::drawImageMask(state, ref, str, width, height, invert, interpolate, inlineImg);
+    image->setImage (surface);
+
+    setCairo (NULL);
+    cairo_surface_destroy (surface);
+    cairo_destroy (cr);
+  }
+}
+
+void CairoImageOutputDev::drawImage(GfxState *state, Object *ref, Stream *str,
+				    int width, int height, GfxImageColorMap *colorMap,
+				    GBool interpolate, int *maskColors, GBool inlineImg)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  double x1, y1, x2, y2;
+  double *ctm;
+  double mat[6];
+  CairoImage *image;
+
+  ctm = state->getCTM();
+  
+  mat[0] = ctm[0];
+  mat[1] = ctm[1];
+  mat[2] = -ctm[2];
+  mat[3] = -ctm[3];
+  mat[4] = ctm[2] + ctm[4];
+  mat[5] = ctm[3] + ctm[5];
+  x1 = mat[4];
+  y1 = mat[5];
+  x2 = x1 + width;
+  y2 = y1 + height;
+
+  image = new CairoImage (x1, y1, x2, y2);
+  saveImage (image);
+
+  if (imgDrawCbk && imgDrawCbk (numImages - 1, imgDrawCbkData)) {
+    surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    cr = cairo_create (surface);
+    setCairo (cr);
+    cairo_translate (cr, 0, height);
+    cairo_scale (cr, width, -height);
+    
+    CairoOutputDev::drawImage(state, ref, str, width, height, colorMap, interpolate, maskColors, inlineImg);
+    image->setImage (surface);
+    
+    setCairo (NULL);
+    cairo_surface_destroy (surface);
+    cairo_destroy (cr);
+  }
+}
+
+void CairoImageOutputDev::drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
+					      int width, int height,
+					      GfxImageColorMap *colorMap,
+					      GBool interpolate,
+					      Stream *maskStr,
+					      int maskWidth, int maskHeight,
+					      GfxImageColorMap *maskColorMap,
+					      GBool maskInterpolate)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  double x1, y1, x2, y2;
+  double *ctm;
+  double mat[6];
+  CairoImage *image;
+
+  ctm = state->getCTM();
+  
+  mat[0] = ctm[0];
+  mat[1] = ctm[1];
+  mat[2] = -ctm[2];
+  mat[3] = -ctm[3];
+  mat[4] = ctm[2] + ctm[4];
+  mat[5] = ctm[3] + ctm[5];
+  x1 = mat[4];
+  y1 = mat[5];
+  x2 = x1 + width;
+  y2 = y1 + height;
+
+  image = new CairoImage (x1, y1, x2, y2);
+  saveImage (image);
+
+  if (imgDrawCbk && imgDrawCbk (numImages - 1, imgDrawCbkData)) {
+    surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    cr = cairo_create (surface);
+    setCairo (cr);
+    cairo_translate (cr, 0, height);
+    cairo_scale (cr, width, -height);
+    
+    CairoOutputDev::drawSoftMaskedImage(state, ref, str, width, height, colorMap, interpolate,
+					maskStr, maskWidth, maskHeight, maskColorMap, maskInterpolate);
+    image->setImage (surface);
+    
+    setCairo (NULL);
+    cairo_surface_destroy (surface);
+    cairo_destroy (cr);
+  }
+}
+
+void CairoImageOutputDev::drawMaskedImage(GfxState *state, Object *ref, Stream *str,
+					  int width, int height,
+					  GfxImageColorMap *colorMap,
+					  GBool interpolate,
+					  Stream *maskStr,
+					  int maskWidth, int maskHeight,
+					  GBool maskInvert, GBool maskInterpolate)
+{
+  cairo_t *cr;
+  cairo_surface_t *surface;
+  double x1, y1, x2, y2;
+  double *ctm;
+  double mat[6];
+  CairoImage *image;
+
+  ctm = state->getCTM();
+  
+  mat[0] = ctm[0];
+  mat[1] = ctm[1];
+  mat[2] = -ctm[2];
+  mat[3] = -ctm[3];
+  mat[4] = ctm[2] + ctm[4];
+  mat[5] = ctm[3] + ctm[5];
+  x1 = mat[4];
+  y1 = mat[5];
+  x2 = x1 + width;
+  y2 = y1 + height;
+
+  image = new CairoImage (x1, y1, x2, y2);
+  saveImage (image);
+
+  if (imgDrawCbk && imgDrawCbk (numImages - 1, imgDrawCbkData)) {
+    surface = cairo_image_surface_create (CAIRO_FORMAT_ARGB32, width, height);
+    cr = cairo_create (surface);
+    setCairo (cr);
+    cairo_translate (cr, 0, height);
+    cairo_scale (cr, width, -height);
+    
+    CairoOutputDev::drawMaskedImage(state, ref, str, width, height, colorMap, interpolate,
+				    maskStr, maskWidth, maskHeight, maskInvert, maskInterpolate);
+    image->setImage (surface);
+    
+    setCairo (NULL);
+    cairo_surface_destroy (surface);
+    cairo_destroy (cr);
+  }
+}
 
=== modified file 'debian/changelog'
--- debian/changelog	2012-09-12 10:53:15 +0000
+++ debian/changelog	2012-11-13 19:26:27 +0000
@@ -1,3 +1,11 @@
+poppler (0.20.4-0ubuntu2) raring; urgency=low
+
+  * debian/patches/git_gouraud_shading_support.patch: (LP: #1072129)
+    - Evince crashes after opening certain PDF file because parameterized
+      Gouraud shading is not supported.
+
+ -- Matthieu Baerts (matttbe) <[e-mail]>  Sat, 10 Nov 2012 16:51:12 +0100
+
 poppler (0.20.4-0ubuntu1) quantal; urgency=low
 
   * New upstream bugfix release
 
=== added file 'debian/patches/git_gouraud_shading_support.patch'
--- debian/patches/git_gouraud_shading_support.patch	1970-01-01 00:00:00 +0000
+++ debian/patches/git_gouraud_shading_support.patch	2012-11-13 19:26:27 +0000
@@ -0,0 +1,38 @@
+From ae8fc0cbfc6123189e17b3cf1286e0540f181646 Mon Sep 17 00:00:00 2001
+From: Adrian Johnson <[e-mail]>
+Date: Tue, 30 Oct 2012 10:52:04 +0000
+Subject: cairo: support parameterized Gouraud shading
+Bug: https://bugs.freedesktop.org/show_bug.cgi?id=56463
+Bug-Ubuntu: https://bugs.launchpad.net/poppler/+bug/1072129
+
+---
+Index: poppler/poppler/CairoOutputDev.cc
+===================================================================
+--- poppler.orig/poppler/CairoOutputDev.cc	2012-11-10 16:49:31.178020000 +0100
++++ poppler/poppler/CairoOutputDev.cc	2012-11-10 16:50:44.513164938 +0100
+@@ -945,10 +945,21 @@
+   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]);
++    if (shading->isParameterized()) {
++      double color0, color1, color2;
++      shading->getTriangle(i, &x0, &y0, &color0,
++                              &x1, &y1, &color1,
++                              &x2, &y2, &color2);
++      shading->getParameterizedColor(color0, &color[0]);
++      shading->getParameterizedColor(color1, &color[1]);
++      shading->getParameterizedColor(color2, &color[2]);
++    } else {
++      shading->getTriangle(i,
++                           &x0, &y0, &color[0],
++                           &x1, &y1, &color[1],
++                           &x2, &y2, &color[2]);
++
++    }
+ 
+     cairo_mesh_pattern_begin_patch (fill_pattern);
+ 
 
=== modified file 'debian/patches/series'
--- debian/patches/series	2012-08-14 13:11:05 +0000
+++ debian/patches/series	2012-11-13 19:26:27 +0000
@@ -1,2 +1,3 @@
 ltmain-as-needed.diff
 qt4-visibility.diff
+git_gouraud_shading_support.patch
 
=== modified file 'poppler/CairoOutputDev.cc'
--- poppler/CairoOutputDev.cc	2012-06-22 14:50:04 +0000
+++ poppler/CairoOutputDev.cc	2012-11-13 19:26:27 +0000
@@ -945,10 +945,21 @@
   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]);
+    if (shading->isParameterized()) {
+      double color0, color1, color2;
+      shading->getTriangle(i, &x0, &y0, &color0,
+                              &x1, &y1, &color1,
+                              &x2, &y2, &color2);
+      shading->getParameterizedColor(color0, &color[0]);
+      shading->getParameterizedColor(color1, &color[1]);
+      shading->getParameterizedColor(color2, &color[2]);
+    } else {
+      shading->getTriangle(i,
+                           &x0, &y0, &color[0],
+                           &x1, &y1, &color[1],
+                           &x2, &y2, &color[2]);
+
+    }
 
     cairo_mesh_pattern_begin_patch (fill_pattern);