mirror of
https://github.com/pdf2htmlEX/pdf2htmlEX.git
synced 2024-12-22 13:00:08 +00:00
504 lines
18 KiB
C++
504 lines
18 KiB
C++
//========================================================================
|
|
//
|
|
// CairoOutputDev.h
|
|
//
|
|
// 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 <jeff@infidigm.net>
|
|
// Copyright (C) 2005, 2006 Kristian Høgsberg <krh@redhat.com>
|
|
// Copyright (C) 2005 Nickolay V. Shmyrev <nshmyrev@yandex.ru>
|
|
// Copyright (C) 2006-2011 Carlos Garcia Campos <carlosgc@gnome.org>
|
|
// Copyright (C) 2008, 2009, 2011, 2012 Adrian Johnson <ajohnson@redneon.com>
|
|
// Copyright (C) 2008 Michael Vrable <mvrable@cs.ucsd.edu>
|
|
// Copyright (C) 2010-2012 Thomas Freitag <Thomas.Freitag@alfa.de>
|
|
//
|
|
// 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
|
|
//
|
|
//========================================================================
|
|
|
|
#ifndef CAIROOUTPUTDEV_H
|
|
#define CAIROOUTPUTDEV_H
|
|
|
|
#ifdef USE_GCC_PRAGMAS
|
|
#pragma interface
|
|
#endif
|
|
|
|
#include "goo/gtypes.h"
|
|
#include <cairo-ft.h>
|
|
#include "OutputDev.h"
|
|
#include "TextOutputDev.h"
|
|
#include "GfxState.h"
|
|
|
|
class PDFDoc;
|
|
class GfxState;
|
|
class GfxPath;
|
|
class Gfx8BitFont;
|
|
struct GfxRGB;
|
|
class CairoFontEngine;
|
|
class CairoFont;
|
|
|
|
//------------------------------------------------------------------------
|
|
|
|
//------------------------------------------------------------------------
|
|
// CairoImage
|
|
//------------------------------------------------------------------------
|
|
class CairoImage {
|
|
public:
|
|
// Constructor.
|
|
CairoImage (double x1, double y1, double x2, double y2);
|
|
|
|
// Destructor.
|
|
~CairoImage ();
|
|
|
|
// Set the image cairo surface
|
|
void setImage (cairo_surface_t *image);
|
|
|
|
// Get the image cairo surface
|
|
cairo_surface_t *getImage () const { return image; }
|
|
|
|
// Get the image rectangle
|
|
void getRect (double *xa1, double *ya1, double *xa2, double *ya2)
|
|
{ *xa1 = x1; *ya1 = y1; *xa2 = x2; *ya2 = y2; }
|
|
|
|
private:
|
|
cairo_surface_t *image; // image cairo surface
|
|
double x1, y1; // upper left corner
|
|
double x2, y2; // lower right corner
|
|
};
|
|
|
|
|
|
//------------------------------------------------------------------------
|
|
// CairoOutputDev
|
|
//------------------------------------------------------------------------
|
|
|
|
class CairoOutputDev: public OutputDev {
|
|
public:
|
|
|
|
// Constructor.
|
|
CairoOutputDev();
|
|
|
|
// Destructor.
|
|
virtual ~CairoOutputDev();
|
|
|
|
//----- get info about output device
|
|
|
|
// Does this device use upside-down coordinates?
|
|
// (Upside-down means (0,0) is the top left corner of the page.)
|
|
virtual GBool upsideDown() { return gTrue; }
|
|
|
|
// Does this device use drawChar() or drawString()?
|
|
virtual GBool useDrawChar() { return gTrue; }
|
|
|
|
// Does this device use tilingPatternFill()? If this returns false,
|
|
// tiling pattern fills will be reduced to a series of other drawing
|
|
// operations.
|
|
virtual GBool useTilingPatternFill() { return gTrue; }
|
|
|
|
// Does this device use functionShadedFill(), axialShadedFill(), and
|
|
// radialShadedFill()? If this returns false, these shaded fills
|
|
// will be reduced to a series of other drawing operations.
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
|
|
virtual GBool useShadedFills(int type) { return type <= 7; }
|
|
#else
|
|
virtual GBool useShadedFills(int type) { return type < 4; }
|
|
#endif
|
|
|
|
// Does this device use FillColorStop()?
|
|
virtual GBool useFillColorStop() { return gTrue; }
|
|
|
|
// Does this device use beginType3Char/endType3Char? Otherwise,
|
|
// text in Type 3 fonts will be drawn with drawChar/drawString.
|
|
virtual GBool interpretType3Chars() { return gFalse; }
|
|
|
|
//----- initialization and control
|
|
|
|
// Start a page.
|
|
virtual void startPage(int pageNum, GfxState *state);
|
|
|
|
// End a page.
|
|
virtual void endPage();
|
|
|
|
//----- save/restore graphics state
|
|
virtual void saveState(GfxState *state);
|
|
virtual void restoreState(GfxState *state);
|
|
|
|
//----- update graphics state
|
|
virtual void updateAll(GfxState *state);
|
|
virtual void setDefaultCTM(double *ctm);
|
|
virtual void updateCTM(GfxState *state, double m11, double m12,
|
|
double m21, double m22, double m31, double m32);
|
|
virtual void updateLineDash(GfxState *state);
|
|
virtual void updateFlatness(GfxState *state);
|
|
virtual void updateLineJoin(GfxState *state);
|
|
virtual void updateLineCap(GfxState *state);
|
|
virtual void updateMiterLimit(GfxState *state);
|
|
virtual void updateLineWidth(GfxState *state);
|
|
virtual void updateFillColor(GfxState *state);
|
|
virtual void updateStrokeColor(GfxState *state);
|
|
virtual void updateFillOpacity(GfxState *state);
|
|
virtual void updateStrokeOpacity(GfxState *state);
|
|
virtual void updateFillColorStop(GfxState *state, double offset);
|
|
virtual void updateBlendMode(GfxState *state);
|
|
|
|
//----- update text state
|
|
virtual void updateFont(GfxState *state);
|
|
|
|
//----- path painting
|
|
virtual void stroke(GfxState *state);
|
|
virtual void fill(GfxState *state);
|
|
virtual void eoFill(GfxState *state);
|
|
virtual void clipToStrokePath(GfxState *state);
|
|
virtual GBool tilingPatternFill(GfxState *state, Gfx *gfx, 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);
|
|
virtual GBool axialShadedFill(GfxState *state, GfxAxialShading *shading, double tMin, double tMax);
|
|
virtual GBool axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading);
|
|
virtual GBool radialShadedFill(GfxState *state, GfxRadialShading *shading, double sMin, double sMax);
|
|
virtual GBool radialShadedSupportExtend(GfxState *state, GfxRadialShading *shading);
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
|
|
virtual GBool gouraudTriangleShadedFill(GfxState *state, GfxGouraudTriangleShading *shading);
|
|
virtual GBool patchMeshShadedFill(GfxState *state, GfxPatchMeshShading *shading);
|
|
#endif
|
|
|
|
//----- path clipping
|
|
virtual void clip(GfxState *state);
|
|
virtual void eoClip(GfxState *state);
|
|
|
|
//----- text drawing
|
|
void beginString(GfxState *state, GooString *s);
|
|
void endString(GfxState *state);
|
|
void drawChar(GfxState *state, double x, double y,
|
|
double dx, double dy,
|
|
double originX, double originY,
|
|
CharCode code, int nBytes, Unicode *u, int uLen);
|
|
void beginActualText(GfxState *state, GooString *text);
|
|
void endActualText(GfxState *state);
|
|
|
|
virtual GBool beginType3Char(GfxState *state, double x, double y,
|
|
double dx, double dy,
|
|
CharCode code, Unicode *u, int uLen);
|
|
virtual void endType3Char(GfxState *state);
|
|
virtual void beginTextObject(GfxState *state);
|
|
virtual GBool deviceHasTextClip(GfxState *state) { return textClipPath; }
|
|
virtual void endTextObject(GfxState *state);
|
|
|
|
//----- image drawing
|
|
virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GBool invert, GBool interpolate,
|
|
GBool inlineImg);
|
|
virtual void setSoftMaskFromImageMask(GfxState *state,
|
|
Object *ref, Stream *str,
|
|
int width, int height, GBool invert,
|
|
GBool inlineImg, double *baseMatrix);
|
|
virtual void unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix);
|
|
void drawImageMaskPrescaled(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GBool invert, GBool interpolate,
|
|
GBool inlineImg);
|
|
void drawImageMaskRegular(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GBool invert, GBool interpolate,
|
|
GBool inlineImg);
|
|
|
|
virtual void drawImage(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GfxImageColorMap *colorMap,
|
|
GBool interpolate, int *maskColors, GBool inlineImg);
|
|
virtual void 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);
|
|
|
|
virtual void 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);
|
|
|
|
//----- transparency groups and soft masks
|
|
virtual void beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
|
|
GfxColorSpace * /*blendingColorSpace*/,
|
|
GBool /*isolated*/, GBool /*knockout*/,
|
|
GBool /*forSoftMask*/);
|
|
virtual void endTransparencyGroup(GfxState * /*state*/);
|
|
void popTransparencyGroup();
|
|
virtual void paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/);
|
|
virtual void setSoftMask(GfxState * /*state*/, double * /*bbox*/, GBool /*alpha*/,
|
|
Function * /*transferFunc*/, GfxColor * /*backdropColor*/);
|
|
virtual void clearSoftMask(GfxState * /*state*/);
|
|
|
|
//----- Type 3 font operators
|
|
virtual void type3D0(GfxState *state, double wx, double wy);
|
|
virtual void type3D1(GfxState *state, double wx, double wy,
|
|
double llx, double lly, double urx, double ury);
|
|
|
|
//----- special access
|
|
|
|
// Called to indicate that a new PDF document has been loaded.
|
|
void startDoc(PDFDoc *docA, CairoFontEngine *fontEngine = NULL);
|
|
|
|
GBool isReverseVideo() { return gFalse; }
|
|
|
|
void setCairo (cairo_t *cr);
|
|
void setTextPage (TextPage *text);
|
|
void setPrinting (GBool printing) { this->printing = printing; needFontUpdate = gTrue; }
|
|
|
|
void setInType3Char(GBool inType3Char) { this->inType3Char = inType3Char; }
|
|
void getType3GlyphWidth (double *wx, double *wy) { *wx = t3_glyph_wx; *wy = t3_glyph_wy; }
|
|
GBool hasType3GlyphBBox () { return t3_glyph_has_bbox; }
|
|
double *getType3GlyphBBox () { return t3_glyph_bbox; }
|
|
|
|
protected:
|
|
void doPath(cairo_t *cairo, GfxState *state, GfxPath *path);
|
|
cairo_surface_t *downscaleSurface(cairo_surface_t *orig_surface);
|
|
void getScaledSize(int orig_width, int orig_height,
|
|
int *scaledWidth, int *scaledHeight);
|
|
cairo_filter_t getFilterForSurface(cairo_surface_t *image,
|
|
GBool interpolate);
|
|
GBool getStreamData (Stream *str, char **buffer, int *length);
|
|
void setMimeData(Stream *str, Object *ref, cairo_surface_t *image);
|
|
void fillToStrokePathClip(GfxState *state);
|
|
void alignStrokeCoords(GfxSubpath *subpath, int i, double *x, double *y);
|
|
|
|
GfxRGB fill_color, stroke_color;
|
|
cairo_pattern_t *fill_pattern, *stroke_pattern;
|
|
double fill_opacity;
|
|
double stroke_opacity;
|
|
GBool stroke_adjust;
|
|
GBool adjusted_stroke_width;
|
|
GBool align_stroke_coords;
|
|
CairoFont *currentFont;
|
|
|
|
struct StrokePathClip {
|
|
GfxPath *path;
|
|
cairo_matrix_t ctm;
|
|
double line_width;
|
|
double *dashes;
|
|
int dash_count;
|
|
double dash_offset;
|
|
cairo_line_cap_t cap;
|
|
cairo_line_join_t join;
|
|
double miter;
|
|
} *strokePathClip;
|
|
|
|
PDFDoc *doc; // the current document
|
|
|
|
static FT_Library ft_lib;
|
|
static GBool ft_lib_initialized;
|
|
|
|
CairoFontEngine *fontEngine;
|
|
GBool fontEngine_owner;
|
|
|
|
cairo_t *cairo;
|
|
cairo_matrix_t orig_matrix;
|
|
GBool needFontUpdate; // set when the font needs to be updated
|
|
GBool printing;
|
|
GBool use_show_text_glyphs;
|
|
cairo_surface_t *surface;
|
|
cairo_glyph_t *glyphs;
|
|
int glyphCount;
|
|
cairo_text_cluster_t *clusters;
|
|
int clusterCount;
|
|
char *utf8;
|
|
int utf8Count;
|
|
int utf8Max;
|
|
cairo_path_t *textClipPath;
|
|
GBool inType3Char; // inside a Type 3 CharProc
|
|
double t3_glyph_wx, t3_glyph_wy;
|
|
GBool t3_glyph_has_bbox;
|
|
double t3_glyph_bbox[4];
|
|
|
|
GBool prescaleImages;
|
|
|
|
TextPage *text; // text for the current page
|
|
ActualText *actualText;
|
|
|
|
cairo_pattern_t *group;
|
|
cairo_pattern_t *shape;
|
|
cairo_pattern_t *mask;
|
|
cairo_matrix_t mask_matrix;
|
|
cairo_surface_t *cairo_shape_surface;
|
|
cairo_t *cairo_shape;
|
|
int knockoutCount;
|
|
struct ColorSpaceStack {
|
|
GBool knockout;
|
|
GfxColorSpace *cs;
|
|
cairo_matrix_t group_matrix;
|
|
struct ColorSpaceStack *next;
|
|
} * groupColorSpaceStack;
|
|
|
|
struct MaskStack {
|
|
cairo_pattern_t *mask;
|
|
cairo_matrix_t mask_matrix;
|
|
struct MaskStack *next;
|
|
} *maskStack;
|
|
|
|
};
|
|
|
|
//------------------------------------------------------------------------
|
|
// CairoImageOutputDev
|
|
//------------------------------------------------------------------------
|
|
|
|
//XXX: this should ideally not inherit from CairoOutputDev but use it instead perhaps
|
|
class CairoImageOutputDev: public CairoOutputDev {
|
|
public:
|
|
|
|
// Constructor.
|
|
CairoImageOutputDev();
|
|
|
|
// Destructor.
|
|
virtual ~CairoImageOutputDev();
|
|
|
|
//----- get info about output device
|
|
|
|
// Does this device use upside-down coordinates?
|
|
// (Upside-down means (0,0) is the top left corner of the page.)
|
|
virtual GBool upsideDown() { return gTrue; }
|
|
|
|
// Does this device use drawChar() or drawString()?
|
|
virtual GBool useDrawChar() { return gFalse; }
|
|
|
|
// Does this device use tilingPatternFill()? If this returns false,
|
|
// tiling pattern fills will be reduced to a series of other drawing
|
|
// operations.
|
|
virtual GBool useTilingPatternFill() { return gTrue; }
|
|
|
|
// Does this device use functionShadedFill(), axialShadedFill(), and
|
|
// radialShadedFill()? If this returns false, these shaded fills
|
|
// will be reduced to a series of other drawing operations.
|
|
#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 11, 2)
|
|
virtual GBool useShadedFills(int type) { return type <= 7; }
|
|
#else
|
|
virtual GBool useShadedFills(int type) { return type < 4; }
|
|
#endif
|
|
|
|
// Does this device use FillColorStop()?
|
|
virtual GBool useFillColorStop() { return gFalse; }
|
|
|
|
// Does this device use beginType3Char/endType3Char? Otherwise,
|
|
// text in Type 3 fonts will be drawn with drawChar/drawString.
|
|
virtual GBool interpretType3Chars() { return gFalse; }
|
|
|
|
// Does this device need non-text content?
|
|
virtual GBool needNonText() { return gTrue; }
|
|
|
|
//----- save/restore graphics state
|
|
virtual void saveState(GfxState *state) { }
|
|
virtual void restoreState(GfxState *state) { }
|
|
|
|
//----- update graphics state
|
|
virtual void updateAll(GfxState *state) { }
|
|
virtual void setDefaultCTM(double *ctm) { }
|
|
virtual void updateCTM(GfxState *state, double m11, double m12,
|
|
double m21, double m22, double m31, double m32) { }
|
|
virtual void updateLineDash(GfxState *state) { }
|
|
virtual void updateFlatness(GfxState *state) { }
|
|
virtual void updateLineJoin(GfxState *state) { }
|
|
virtual void updateLineCap(GfxState *state) { }
|
|
virtual void updateMiterLimit(GfxState *state) { }
|
|
virtual void updateLineWidth(GfxState *state) { }
|
|
virtual void updateFillColor(GfxState *state) { }
|
|
virtual void updateStrokeColor(GfxState *state) { }
|
|
virtual void updateFillOpacity(GfxState *state) { }
|
|
virtual void updateStrokeOpacity(GfxState *state) { }
|
|
virtual void updateBlendMode(GfxState *state) { }
|
|
|
|
//----- update text state
|
|
virtual void updateFont(GfxState *state) { }
|
|
|
|
//----- path painting
|
|
virtual void stroke(GfxState *state) { }
|
|
virtual void fill(GfxState *state) { }
|
|
virtual void eoFill(GfxState *state) { }
|
|
virtual void clipToStrokePath(GfxState *state) { }
|
|
virtual GBool tilingPatternFill(GfxState *state, Gfx *gfx, 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) { return gTrue; }
|
|
virtual GBool axialShadedFill(GfxState *state,
|
|
GfxAxialShading *shading,
|
|
double tMin, double tMax) { return gTrue; }
|
|
virtual GBool radialShadedFill(GfxState *state,
|
|
GfxRadialShading *shading,
|
|
double sMin, double sMax) { return gTrue; }
|
|
|
|
//----- path clipping
|
|
virtual void clip(GfxState *state) { }
|
|
virtual void eoClip(GfxState *state) { }
|
|
|
|
//----- image drawing
|
|
virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GBool invert,
|
|
GBool interpolate, GBool inlineImg);
|
|
virtual void drawImage(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GfxImageColorMap *colorMap,
|
|
GBool interpolate, int *maskColors, GBool inlineImg);
|
|
virtual void 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);
|
|
virtual void 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);
|
|
virtual void setSoftMaskFromImageMask(GfxState *state, Object *ref, Stream *str,
|
|
int width, int height, GBool invert,
|
|
GBool inlineImg, double *baseMatrix);
|
|
virtual void unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix) {}
|
|
|
|
|
|
//----- transparency groups and soft masks
|
|
virtual void beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
|
|
GfxColorSpace * /*blendingColorSpace*/,
|
|
GBool /*isolated*/, GBool /*knockout*/,
|
|
GBool /*forSoftMask*/) {}
|
|
virtual void endTransparencyGroup(GfxState * /*state*/) {}
|
|
virtual void paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) {}
|
|
virtual void setSoftMask(GfxState * /*state*/, double * /*bbox*/, GBool /*alpha*/,
|
|
Function * /*transferFunc*/, GfxColor * /*backdropColor*/) {}
|
|
virtual void clearSoftMask(GfxState * /*state*/) {}
|
|
|
|
//----- Image list
|
|
// By default images are not rendred
|
|
void setImageDrawDecideCbk(GBool (*cbk)(int img_id, void *data),
|
|
void *data) { imgDrawCbk = cbk; imgDrawCbkData = data; }
|
|
// Iterate through list of images.
|
|
int getNumImages() const { return numImages; }
|
|
CairoImage *getImage(int i) const { return images[i]; }
|
|
|
|
private:
|
|
void saveImage(CairoImage *image);
|
|
|
|
CairoImage **images;
|
|
int numImages;
|
|
int size;
|
|
GBool (*imgDrawCbk)(int img_id, void *data);
|
|
void *imgDrawCbkData;
|
|
};
|
|
|
|
#endif
|