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-//========================================================================
-//
-// 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, 2013 Carlos Garcia Campos <carlosgc@gnome.org>
-// Copyright (C) 2008, 2009, 2011-2017 Adrian Johnson <ajohnson@redneon.com>
-// Copyright (C) 2008 Michael Vrable <mvrable@cs.ucsd.edu>
-// Copyright (C) 2010-2013 Thomas Freitag <Thomas.Freitag@alfa.de>
-// Copyright (C) 2015 Suzuki Toshiya <mpsuzuki@hiroshima-u.ac.jp>
-// Copyright (C) 2016 Jason Crain <jason@aquaticape.us>
-// Copyright (C) 2018 Albert Astals Cid <aacid@kde.org>
-// Copyright (C) 2018 Klarälvdalens Datakonsult AB, a KDAB Group company, <info@kdab.com>. Work sponsored by the LiMux project of the city of Munich
-//
-// 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 ();
-
- CairoImage(const CairoImage &) = delete;
- CairoImage& operator=(const CairoImage &) = delete;
-
- // 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.)
- GBool upsideDown() override { return gTrue; }
-
- // Does this device use drawChar() or drawString()?
- GBool useDrawChar() override { return gTrue; }
-
- // Does this device use tilingPatternFill()? If this returns false,
- // tiling pattern fills will be reduced to a series of other drawing
- // operations.
- GBool useTilingPatternFill() override { 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)
- GBool useShadedFills(int type) override { return type <= 7; }
-#else
- GBool useShadedFills(int type) override { return type > 1 && type < 4; }
-#endif
-
- // Does this device use FillColorStop()?
- GBool useFillColorStop() override { return gTrue; }
-
- // Does this device use beginType3Char/endType3Char? Otherwise,
- // text in Type 3 fonts will be drawn with drawChar/drawString.
- GBool interpretType3Chars() override { return gFalse; }
-
- // Does this device need to clip pages to the crop box even when the
- // box is the crop box?
- GBool needClipToCropBox() override { return gTrue; }
-
- //----- initialization and control
-
- // Start a page.
- void startPage(int pageNum, GfxState *state, XRef *xref) override;
-
- // End a page.
- void endPage() override;
-
- //----- save/restore graphics state
- void saveState(GfxState *state) override;
- void restoreState(GfxState *state) override;
-
- //----- update graphics state
- void updateAll(GfxState *state) override;
- void setDefaultCTM(double *ctm) override;
- void updateCTM(GfxState *state, double m11, double m12,
- double m21, double m22, double m31, double m32) override;
- void updateLineDash(GfxState *state) override;
- void updateFlatness(GfxState *state) override;
- void updateLineJoin(GfxState *state) override;
- void updateLineCap(GfxState *state) override;
- void updateMiterLimit(GfxState *state) override;
- void updateLineWidth(GfxState *state) override;
- void updateFillColor(GfxState *state) override;
- void updateStrokeColor(GfxState *state) override;
- void updateFillOpacity(GfxState *state) override;
- void updateStrokeOpacity(GfxState *state) override;
- void updateFillColorStop(GfxState *state, double offset) override;
- void updateBlendMode(GfxState *state) override;
-
- //----- update text state
- void updateFont(GfxState *state) override;
-
- //----- path painting
- void stroke(GfxState *state) override;
- void fill(GfxState *state) override;
- void eoFill(GfxState *state) override;
- void clipToStrokePath(GfxState *state) override;
- 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) override;
-#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
- GBool functionShadedFill(GfxState *state, GfxFunctionShading *shading) override;
-#endif
- GBool axialShadedFill(GfxState *state, GfxAxialShading *shading, double tMin, double tMax) override;
- GBool axialShadedSupportExtend(GfxState *state, GfxAxialShading *shading) override;
- GBool radialShadedFill(GfxState *state, GfxRadialShading *shading, double sMin, double sMax) override;
- GBool radialShadedSupportExtend(GfxState *state, GfxRadialShading *shading) override;
-#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 12, 0)
- GBool gouraudTriangleShadedFill(GfxState *state, GfxGouraudTriangleShading *shading) override;
- GBool patchMeshShadedFill(GfxState *state, GfxPatchMeshShading *shading) override;
-#endif
-
- //----- path clipping
- void clip(GfxState *state) override;
- void eoClip(GfxState *state) override;
-
- //----- text drawing
- void beginString(GfxState *state, const GooString *s) override;
- void endString(GfxState *state) override;
- void drawChar(GfxState *state, double x, double y,
- double dx, double dy,
- double originX, double originY,
- CharCode code, int nBytes, Unicode *u, int uLen) override;
- void beginActualText(GfxState *state, const GooString *text) override;
- void endActualText(GfxState *state) override;
-
- GBool beginType3Char(GfxState *state, double x, double y,
- double dx, double dy,
- CharCode code, Unicode *u, int uLen) override;
- void endType3Char(GfxState *state) override;
- void beginTextObject(GfxState *state) override;
- void endTextObject(GfxState *state) override;
-
- //----- image drawing
- void drawImageMask(GfxState *state, Object *ref, Stream *str,
- int width, int height, GBool invert, GBool interpolate,
- GBool inlineImg) override;
- void setSoftMaskFromImageMask(GfxState *state,
- Object *ref, Stream *str,
- int width, int height, GBool invert,
- GBool inlineImg, double *baseMatrix) override;
- void unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix) override;
- 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);
-
- void drawImage(GfxState *state, Object *ref, Stream *str,
- int width, int height, GfxImageColorMap *colorMap,
- GBool interpolate, int *maskColors, GBool inlineImg) override;
- 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) override;
-
- 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) override;
-
- //----- transparency groups and soft masks
- void beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
- GfxColorSpace * /*blendingColorSpace*/,
- GBool /*isolated*/, GBool /*knockout*/,
- GBool /*forSoftMask*/) override;
- void endTransparencyGroup(GfxState * /*state*/) override;
- void popTransparencyGroup();
- void paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) override;
- void setSoftMask(GfxState * /*state*/, double * /*bbox*/, GBool /*alpha*/,
- Function * /*transferFunc*/, GfxColor * /*backdropColor*/) override;
- void clearSoftMask(GfxState * /*state*/) override;
-
- //----- Type 3 font operators
- void type3D0(GfxState *state, double wx, double wy) override;
- void type3D1(GfxState *state, double wx, double wy,
- double llx, double lly, double urx, double ury) override;
-
- //----- 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 printingA) { printing = printingA; needFontUpdate = gTrue; }
- void setAntialias(cairo_antialias_t antialias);
-
- void setInType3Char(GBool inType3CharA) { inType3Char = inType3CharA; }
- 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(const cairo_matrix_t *matrix,
- 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(GfxState *state, Stream *str, Object *ref,
- GfxImageColorMap *colorMap, cairo_surface_t *image, int height);
- void fillToStrokePathClip(GfxState *state);
- void alignStrokeCoords(GfxSubpath *subpath, int i, double *x, double *y);
-#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 14, 0)
- GBool setMimeDataForJBIG2Globals (Stream *str, cairo_surface_t *image);
-#endif
-#if CAIRO_VERSION >= CAIRO_VERSION_ENCODE(1, 15, 10)
- GBool setMimeDataForCCITTParams(Stream *str, cairo_surface_t *image, int height);
-#endif
- static void setContextAntialias(cairo_t *cr, cairo_antialias_t antialias);
-
- 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;
- XRef *xref;
-
- 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;
- int ref_count;
- } *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;
- GBool text_matrix_valid;
- cairo_glyph_t *glyphs;
- int glyphCount;
- cairo_text_cluster_t *clusters;
- int clusterCount;
- char *utf8;
- int utf8Count;
- int utf8Max;
- cairo_path_t *textClipPath;
- GBool inUncoloredPattern; // inside a uncolored pattern (PaintType = 2)
- GBool inType3Char; // inside a Type 3 CharProc
- double t3_glyph_wx, t3_glyph_wy;
- GBool t3_glyph_has_bbox;
- double t3_glyph_bbox[4];
- cairo_antialias_t antialias;
- 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_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.)
- GBool upsideDown() override { return gTrue; }
-
- // Does this device use drawChar() or drawString()?
- GBool useDrawChar() override { return gFalse; }
-
- // Does this device use tilingPatternFill()? If this returns false,
- // tiling pattern fills will be reduced to a series of other drawing
- // operations.
- GBool useTilingPatternFill() override { 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)
- GBool useShadedFills(int type) override { return type <= 7; }
-#else
- GBool useShadedFills(int type) override { return type < 4; }
-#endif
-
- // Does this device use FillColorStop()?
- GBool useFillColorStop() override { return gFalse; }
-
- // Does this device use beginType3Char/endType3Char? Otherwise,
- // text in Type 3 fonts will be drawn with drawChar/drawString.
- GBool interpretType3Chars() override { return gFalse; }
-
- // Does this device need non-text content?
- GBool needNonText() override { return gTrue; }
-
- //----- save/restore graphics state
- void saveState(GfxState *state) override { }
- void restoreState(GfxState *state) override { }
-
- //----- update graphics state
- void updateAll(GfxState *state) override { }
- void setDefaultCTM(double *ctm) override { }
- void updateCTM(GfxState *state, double m11, double m12,
- double m21, double m22, double m31, double m32) override { }
- void updateLineDash(GfxState *state) override { }
- void updateFlatness(GfxState *state) override { }
- void updateLineJoin(GfxState *state) override { }
- void updateLineCap(GfxState *state) override { }
- void updateMiterLimit(GfxState *state) override { }
- void updateLineWidth(GfxState *state) override { }
- void updateFillColor(GfxState *state) override { }
- void updateStrokeColor(GfxState *state) override { }
- void updateFillOpacity(GfxState *state) override { }
- void updateStrokeOpacity(GfxState *state) override { }
- void updateBlendMode(GfxState *state) override { }
-
- //----- update text state
- void updateFont(GfxState *state) override { }
-
- //----- path painting
- void stroke(GfxState *state) override { }
- void fill(GfxState *state) override { }
- void eoFill(GfxState *state) override { }
- void clipToStrokePath(GfxState *state) override { }
- 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) override { return gTrue; }
- GBool axialShadedFill(GfxState *state,
- GfxAxialShading *shading,
- double tMin, double tMax) override { return gTrue; }
- GBool radialShadedFill(GfxState *state,
- GfxRadialShading *shading,
- double sMin, double sMax) override { return gTrue; }
-
- //----- path clipping
- void clip(GfxState *state) override { }
- void eoClip(GfxState *state) override { }
-
- //----- image drawing
- void drawImageMask(GfxState *state, Object *ref, Stream *str,
- int width, int height, GBool invert,
- GBool interpolate, GBool inlineImg) override;
- void drawImage(GfxState *state, Object *ref, Stream *str,
- int width, int height, GfxImageColorMap *colorMap,
- GBool interpolate, int *maskColors, GBool inlineImg) override;
- 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) override;
- 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) override;
- void setSoftMaskFromImageMask(GfxState *state, Object *ref, Stream *str,
- int width, int height, GBool invert,
- GBool inlineImg, double *baseMatrix) override;
- void unsetSoftMaskFromImageMask(GfxState *state, double *baseMatrix) override {}
-
-
- //----- transparency groups and soft masks
- void beginTransparencyGroup(GfxState * /*state*/, double * /*bbox*/,
- GfxColorSpace * /*blendingColorSpace*/,
- GBool /*isolated*/, GBool /*knockout*/,
- GBool /*forSoftMask*/) override {}
- void endTransparencyGroup(GfxState * /*state*/) override {}
- void paintTransparencyGroup(GfxState * /*state*/, double * /*bbox*/) override {}
- void setSoftMask(GfxState * /*state*/, double * /*bbox*/, GBool /*alpha*/,
- Function * /*transferFunc*/, GfxColor * /*backdropColor*/) override {}
- void clearSoftMask(GfxState * /*state*/) override {}
-
- //----- 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);
- void getBBox(GfxState *state, int width, int height,
- double *x1, double *y1, double *x2, double *y2);
-
- CairoImage **images;
- int numImages;
- int size;
- GBool (*imgDrawCbk)(int img_id, void *data);
- void *imgDrawCbkData;
-};
-
-#endif