| //======================================================================== |
| // |
| // GfxState.h |
| // |
| // Copyright 1996-2003 Glyph & Cog, LLC |
| // |
| //======================================================================== |
| |
| //======================================================================== |
| // |
| // 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 Kristian Høgsberg <krh@redhat.com> |
| // Copyright (C) 2006, 2007 Jeff Muizelaar <jeff@infidigm.net> |
| // Copyright (C) 2006 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2009 Koji Otani <sho@bbr.jp> |
| // Copyright (C) 2009-2011, 2013, 2016-2022, 2024 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2010 Christian Feuersänger <cfeuersaenger@googlemail.com> |
| // Copyright (C) 2011 Andrea Canciani <ranma42@gmail.com> |
| // Copyright (C) 2011-2014, 2016, 2020 Thomas Freitag <Thomas.Freitag@alfa.de> |
| // Copyright (C) 2013 Lu Wang <coolwanglu@gmail.com> |
| // Copyright (C) 2015, 2017, 2020, 2022 Adrian Johnson <ajohnson@redneon.com> |
| // Copyright (C) 2017, 2019, 2022 Oliver Sander <oliver.sander@tu-dresden.de> |
| // Copyright (C) 2018 Adam Reichold <adam.reichold@t-online.de> |
| // Copyright (C) 2020, 2021 Philipp Knechtges <philipp-dev@knechtges.com> |
| // Copyright (C) 2024 Athul Raj Kollareth <krathul3152@gmail.com> |
| // |
| // 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 GFXSTATE_H |
| #define GFXSTATE_H |
| |
| #include "poppler-config.h" |
| #include "poppler_private_export.h" |
| |
| #include "Object.h" |
| #include "Function.h" |
| |
| #include <cassert> |
| #include <map> |
| #include <memory> |
| #include <vector> |
| |
| class Array; |
| class Gfx; |
| class GfxFont; |
| class PDFRectangle; |
| class GfxShading; |
| class OutputDev; |
| class GfxState; |
| class GfxResources; |
| class GfxSeparationColorSpace; |
| |
| class Matrix |
| { |
| public: |
| double m[6]; |
| |
| void init(double xx, double yx, double xy, double yy, double x0, double y0) |
| { |
| m[0] = xx; |
| m[1] = yx; |
| m[2] = xy; |
| m[3] = yy; |
| m[4] = x0; |
| m[5] = y0; |
| } |
| bool invertTo(Matrix *other) const; |
| void translate(double tx, double ty); |
| void scale(double sx, double sy); |
| void transform(double x, double y, double *tx, double *ty) const; |
| double determinant() const { return m[0] * m[3] - m[1] * m[2]; } |
| double norm() const; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxBlendMode |
| //------------------------------------------------------------------------ |
| |
| enum GfxBlendMode |
| { |
| gfxBlendNormal, |
| gfxBlendMultiply, |
| gfxBlendScreen, |
| gfxBlendOverlay, |
| gfxBlendDarken, |
| gfxBlendLighten, |
| gfxBlendColorDodge, |
| gfxBlendColorBurn, |
| gfxBlendHardLight, |
| gfxBlendSoftLight, |
| gfxBlendDifference, |
| gfxBlendExclusion, |
| gfxBlendHue, |
| gfxBlendSaturation, |
| gfxBlendColor, |
| gfxBlendLuminosity |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxColorComp |
| //------------------------------------------------------------------------ |
| |
| // 16.16 fixed point color component |
| typedef int GfxColorComp; |
| |
| #define gfxColorComp1 0x10000 |
| |
| static inline GfxColorComp dblToCol(double x) |
| { |
| return (GfxColorComp)(x * gfxColorComp1); |
| } |
| |
| static inline double colToDbl(GfxColorComp x) |
| { |
| return (double)x / (double)gfxColorComp1; |
| } |
| |
| static inline unsigned char dblToByte(double x) |
| { |
| return static_cast<unsigned char>(x * 255.0); |
| } |
| |
| static inline double byteToDbl(unsigned char x) |
| { |
| return (double)x / (double)255.0; |
| } |
| |
| static inline GfxColorComp byteToCol(unsigned char x) |
| { |
| // (x / 255) << 16 = (0.0000000100000001... * x) << 16 |
| // = ((x << 8) + (x) + (x >> 8) + ...) << 16 |
| // = (x << 8) + (x) + (x >> 7) |
| // [for rounding] |
| return (GfxColorComp)((x << 8) + x + (x >> 7)); |
| } |
| |
| static inline unsigned char colToByte(GfxColorComp x) |
| { |
| // 255 * x + 0.5 = 256 * x - x + 0x8000 |
| return (unsigned char)(((x << 8) - x + 0x8000) >> 16); |
| } |
| |
| static inline unsigned short colToShort(GfxColorComp x) |
| { |
| return (unsigned short)(x); |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxColor |
| //------------------------------------------------------------------------ |
| |
| #define gfxColorMaxComps funcMaxOutputs |
| |
| struct GfxColor |
| { |
| GfxColorComp c[gfxColorMaxComps]; |
| }; |
| |
| static inline void clearGfxColor(GfxColor *gfxColor) |
| { |
| memset(gfxColor->c, 0, sizeof(GfxColorComp) * gfxColorMaxComps); |
| } |
| |
| //------------------------------------------------------------------------ |
| // GfxGray |
| //------------------------------------------------------------------------ |
| |
| typedef GfxColorComp GfxGray; |
| |
| //------------------------------------------------------------------------ |
| // GfxRGB |
| //------------------------------------------------------------------------ |
| |
| struct GfxRGB |
| { |
| GfxColorComp r, g, b; |
| |
| bool operator==(GfxRGB other) const { return r == other.r && g == other.g && b == other.b; } |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxCMYK |
| //------------------------------------------------------------------------ |
| |
| struct GfxCMYK |
| { |
| GfxColorComp c, m, y, k; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxColorSpace |
| //------------------------------------------------------------------------ |
| |
| // NB: The nGfxColorSpaceModes constant and the gfxColorSpaceModeNames |
| // array defined in GfxState.cc must match this enum. |
| enum GfxColorSpaceMode |
| { |
| csDeviceGray, |
| csCalGray, |
| csDeviceRGB, |
| csCalRGB, |
| csDeviceCMYK, |
| csLab, |
| csICCBased, |
| csIndexed, |
| csSeparation, |
| csDeviceN, |
| csPattern |
| }; |
| |
| // This shall hold a cmsHPROFILE handle. |
| // Only use the make_GfxLCMSProfilePtr function to construct this pointer, |
| // to ensure that the resources are properly released after usage. |
| typedef std::shared_ptr<void> GfxLCMSProfilePtr; |
| |
| #ifdef USE_CMS |
| GfxLCMSProfilePtr POPPLER_PRIVATE_EXPORT make_GfxLCMSProfilePtr(void *profile); |
| #endif |
| |
| // wrapper of cmsHTRANSFORM to copy |
| class GfxColorTransform |
| { |
| public: |
| void doTransform(void *in, void *out, unsigned int size); |
| // transformA should be a cmsHTRANSFORM |
| GfxColorTransform(void *transformA, int cmsIntent, unsigned int inputPixelType, unsigned int transformPixelType); |
| ~GfxColorTransform(); |
| GfxColorTransform(const GfxColorTransform &) = delete; |
| GfxColorTransform &operator=(const GfxColorTransform &) = delete; |
| int getIntent() const { return cmsIntent; } |
| int getInputPixelType() const { return inputPixelType; } |
| int getTransformPixelType() const { return transformPixelType; } |
| |
| private: |
| GfxColorTransform() { } |
| void *transform; |
| int cmsIntent; |
| unsigned int inputPixelType; |
| unsigned int transformPixelType; |
| }; |
| |
| class POPPLER_PRIVATE_EXPORT GfxColorSpace |
| { |
| public: |
| GfxColorSpace(); |
| virtual ~GfxColorSpace(); |
| |
| GfxColorSpace(const GfxColorSpace &) = delete; |
| GfxColorSpace &operator=(const GfxColorSpace &other) = delete; |
| |
| virtual std::unique_ptr<GfxColorSpace> copy() const = 0; |
| virtual GfxColorSpaceMode getMode() const = 0; |
| |
| // Construct a color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(GfxResources *res, Object *csObj, OutputDev *out, GfxState *state, int recursion = 0); |
| |
| // Convert to gray, RGB, or CMYK. |
| virtual void getGray(const GfxColor *color, GfxGray *gray) const = 0; |
| virtual void getRGB(const GfxColor *color, GfxRGB *rgb) const = 0; |
| virtual void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const = 0; |
| virtual void getDeviceN(const GfxColor *color, GfxColor *deviceN) const = 0; |
| virtual void getGrayLine(unsigned char * /*in*/, unsigned char * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getGrayLine this should not happen"); } |
| virtual void getRGBLine(unsigned char * /*in*/, unsigned int * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getRGBLine (first variant) this should not happen"); } |
| virtual void getRGBLine(unsigned char * /*in*/, unsigned char * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getRGBLine (second variant) this should not happen"); } |
| virtual void getRGBXLine(unsigned char * /*in*/, unsigned char * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getRGBXLine this should not happen"); } |
| virtual void getCMYKLine(unsigned char * /*in*/, unsigned char * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getCMYKLine this should not happen"); } |
| virtual void getDeviceNLine(unsigned char * /*in*/, unsigned char * /*out*/, int /*length*/) { error(errInternal, -1, "GfxColorSpace::getDeviceNLine this should not happen"); } |
| |
| // create mapping for spot colorants |
| virtual void createMapping(std::vector<std::unique_ptr<GfxSeparationColorSpace>> *separationList, int maxSepComps); |
| int *getMapping() const { return mapping; } |
| |
| // Does this ColorSpace support getRGBLine? |
| virtual bool useGetRGBLine() const { return false; } |
| // Does this ColorSpace support getGrayLine? |
| virtual bool useGetGrayLine() const { return false; } |
| // Does this ColorSpace support getCMYKLine? |
| virtual bool useGetCMYKLine() const { return false; } |
| // Does this ColorSpace support getDeviceNLine? |
| virtual bool useGetDeviceNLine() const { return false; } |
| |
| // Return the number of color components. |
| virtual int getNComps() const = 0; |
| |
| // Get this color space's default color. |
| virtual void getDefaultColor(GfxColor *color) const = 0; |
| |
| // Return the default ranges for each component, assuming an image |
| // with a max pixel value of <maxImgPixel>. |
| virtual void getDefaultRanges(double *decodeLow, double *decodeRange, int maxImgPixel) const; |
| |
| // Returns true if painting operations in this color space never |
| // mark the page (e.g., the "None" colorant). |
| virtual bool isNonMarking() const { return false; } |
| |
| // Return the color space's overprint mask. |
| unsigned int getOverprintMask() const { return overprintMask; } |
| |
| // Return the number of color space modes |
| static int getNumColorSpaceModes(); |
| |
| // Return the name of the <idx>th color space mode. |
| static const char *getColorSpaceModeName(int idx); |
| |
| protected: |
| unsigned int overprintMask; |
| int *mapping; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceGrayColorSpace |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxDeviceGrayColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxDeviceGrayColorSpace(); |
| ~GfxDeviceGrayColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csDeviceGray; } |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| void getGrayLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned int *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length) override; |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length) override; |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length) override; |
| |
| bool useGetRGBLine() const override { return true; } |
| bool useGetGrayLine() const override { return true; } |
| bool useGetCMYKLine() const override { return true; } |
| bool useGetDeviceNLine() const override { return true; } |
| |
| int getNComps() const override { return 1; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| private: |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxCalGrayColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxCalGrayColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxCalGrayColorSpace(); |
| ~GfxCalGrayColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csCalGray; } |
| |
| // Construct a CalGray color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(Array *arr, GfxState *state); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| int getNComps() const override { return 1; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| // CalGray-specific access. |
| double getWhiteX() const { return whiteX; } |
| double getWhiteY() const { return whiteY; } |
| double getWhiteZ() const { return whiteZ; } |
| double getBlackX() const { return blackX; } |
| double getBlackY() const { return blackY; } |
| double getBlackZ() const { return blackZ; } |
| double getGamma() const { return gamma; } |
| |
| private: |
| double whiteX, whiteY, whiteZ; // white point |
| double blackX, blackY, blackZ; // black point |
| double gamma; // gamma value |
| void getXYZ(const GfxColor *color, double *pX, double *pY, double *pZ) const; |
| #ifdef USE_CMS |
| std::shared_ptr<GfxColorTransform> transform; |
| #endif |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceRGBColorSpace |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxDeviceRGBColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxDeviceRGBColorSpace(); |
| ~GfxDeviceRGBColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csDeviceRGB; } |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| void getGrayLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned int *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length) override; |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length) override; |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length) override; |
| |
| bool useGetRGBLine() const override { return true; } |
| bool useGetGrayLine() const override { return true; } |
| bool useGetCMYKLine() const override { return true; } |
| bool useGetDeviceNLine() const override { return true; } |
| |
| int getNComps() const override { return 3; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| private: |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxCalRGBColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxCalRGBColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxCalRGBColorSpace(); |
| ~GfxCalRGBColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csCalRGB; } |
| |
| // Construct a CalRGB color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(Array *arr, GfxState *state); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| int getNComps() const override { return 3; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| // CalRGB-specific access. |
| double getWhiteX() const { return whiteX; } |
| double getWhiteY() const { return whiteY; } |
| double getWhiteZ() const { return whiteZ; } |
| double getBlackX() const { return blackX; } |
| double getBlackY() const { return blackY; } |
| double getBlackZ() const { return blackZ; } |
| double getGammaR() const { return gammaR; } |
| double getGammaG() const { return gammaG; } |
| double getGammaB() const { return gammaB; } |
| const double *getMatrix() const { return mat; } |
| |
| private: |
| double whiteX, whiteY, whiteZ; // white point |
| double blackX, blackY, blackZ; // black point |
| double gammaR, gammaG, gammaB; // gamma values |
| double mat[9]; // ABC -> XYZ transform matrix |
| void getXYZ(const GfxColor *color, double *pX, double *pY, double *pZ) const; |
| #ifdef USE_CMS |
| std::shared_ptr<GfxColorTransform> transform; |
| #endif |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceCMYKColorSpace |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxDeviceCMYKColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxDeviceCMYKColorSpace(); |
| ~GfxDeviceCMYKColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csDeviceCMYK; } |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| void getRGBLine(unsigned char *in, unsigned int *out, int length) override; |
| void getRGBLine(unsigned char *, unsigned char *out, int length) override; |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length) override; |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length) override; |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length) override; |
| bool useGetRGBLine() const override { return true; } |
| bool useGetCMYKLine() const override { return true; } |
| bool useGetDeviceNLine() const override { return true; } |
| |
| int getNComps() const override { return 4; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| private: |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxLabColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxLabColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxLabColorSpace(); |
| ~GfxLabColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csLab; } |
| |
| // Construct a Lab color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(Array *arr, GfxState *state); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| int getNComps() const override { return 3; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| void getDefaultRanges(double *decodeLow, double *decodeRange, int maxImgPixel) const override; |
| |
| // Lab-specific access. |
| double getWhiteX() const { return whiteX; } |
| double getWhiteY() const { return whiteY; } |
| double getWhiteZ() const { return whiteZ; } |
| double getBlackX() const { return blackX; } |
| double getBlackY() const { return blackY; } |
| double getBlackZ() const { return blackZ; } |
| double getAMin() const { return aMin; } |
| double getAMax() const { return aMax; } |
| double getBMin() const { return bMin; } |
| double getBMax() const { return bMax; } |
| |
| private: |
| double whiteX, whiteY, whiteZ; // white point |
| double blackX, blackY, blackZ; // black point |
| double aMin, aMax, bMin, bMax; // range for the a and b components |
| void getXYZ(const GfxColor *color, double *pX, double *pY, double *pZ) const; |
| #ifdef USE_CMS |
| std::shared_ptr<GfxColorTransform> transform; |
| #endif |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxICCBasedColorSpace |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxICCBasedColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxICCBasedColorSpace(int nCompsA, std::unique_ptr<GfxColorSpace> &&altA, const Ref *iccProfileStreamA); |
| ~GfxICCBasedColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csICCBased; } |
| |
| std::unique_ptr<GfxICCBasedColorSpace> copyAsOwnType() const; |
| |
| // Construct an ICCBased color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(Array *arr, OutputDev *out, GfxState *state, int recursion); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| void getRGBLine(unsigned char *in, unsigned int *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length) override; |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length) override; |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length) override; |
| |
| bool useGetRGBLine() const override; |
| bool useGetCMYKLine() const override; |
| bool useGetDeviceNLine() const override; |
| |
| int getNComps() const override { return nComps; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| void getDefaultRanges(double *decodeLow, double *decodeRange, int maxImgPixel) const override; |
| |
| // ICCBased-specific access. |
| GfxColorSpace *getAlt() { return alt.get(); } |
| Ref getRef() { return iccProfileStream; } |
| #ifdef USE_CMS |
| char *getPostScriptCSA(); |
| void buildTransforms(GfxState *state); |
| void setProfile(GfxLCMSProfilePtr &profileA) { profile = profileA; } |
| GfxLCMSProfilePtr getProfile() { return profile; } |
| #endif |
| |
| private: |
| int nComps; // number of color components (1, 3, or 4) |
| std::unique_ptr<GfxColorSpace> alt; // alternate color space |
| double rangeMin[4]; // min values for each component |
| double rangeMax[4]; // max values for each component |
| Ref iccProfileStream; // the ICC profile |
| #ifdef USE_CMS |
| GfxLCMSProfilePtr profile; |
| char *psCSA; |
| int getIntent() { return (transform != nullptr) ? transform->getIntent() : 0; } |
| std::shared_ptr<GfxColorTransform> transform; |
| std::shared_ptr<GfxColorTransform> lineTransform; // color transform for line |
| mutable std::map<unsigned int, unsigned int> cmsCache; |
| #endif |
| }; |
| //------------------------------------------------------------------------ |
| // GfxIndexedColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxIndexedColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxIndexedColorSpace(std::unique_ptr<GfxColorSpace> &&baseA, int indexHighA); |
| ~GfxIndexedColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csIndexed; } |
| |
| // Construct an Indexed color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(GfxResources *res, Array *arr, OutputDev *out, GfxState *state, int recursion); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| void getRGBLine(unsigned char *in, unsigned int *out, int length) override; |
| void getRGBLine(unsigned char *in, unsigned char *out, int length) override; |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length) override; |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length) override; |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length) override; |
| |
| bool useGetRGBLine() const override { return true; } |
| bool useGetCMYKLine() const override { return true; } |
| bool useGetDeviceNLine() const override { return true; } |
| |
| int getNComps() const override { return 1; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| void getDefaultRanges(double *decodeLow, double *decodeRange, int maxImgPixel) const override; |
| |
| // Indexed-specific access. |
| GfxColorSpace *getBase() { return base.get(); } |
| int getIndexHigh() const { return indexHigh; } |
| unsigned char *getLookup() { return lookup; } |
| GfxColor *mapColorToBase(const GfxColor *color, GfxColor *baseColor) const; |
| unsigned int getOverprintMask() const { return base->getOverprintMask(); } |
| void createMapping(std::vector<std::unique_ptr<GfxSeparationColorSpace>> *separationList, int maxSepComps) override { base->createMapping(separationList, maxSepComps); } |
| |
| private: |
| std::unique_ptr<GfxColorSpace> base; // base color space |
| int indexHigh; // max pixel value |
| unsigned char *lookup; // lookup table |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxSeparationColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxSeparationColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxSeparationColorSpace(GooString *nameA, std::unique_ptr<GfxColorSpace> &&altA, Function *funcA); |
| ~GfxSeparationColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csSeparation; } |
| |
| std::unique_ptr<GfxSeparationColorSpace> copyAsOwnType() const; |
| |
| // Construct a Separation color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(GfxResources *res, Array *arr, OutputDev *out, GfxState *state, int recursion); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| void createMapping(std::vector<std::unique_ptr<GfxSeparationColorSpace>> *separationList, int maxSepComps) override; |
| |
| int getNComps() const override { return 1; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| bool isNonMarking() const override { return nonMarking; } |
| |
| // Separation-specific access. |
| const GooString *getName() const { return name; } |
| GfxColorSpace *getAlt() { return alt.get(); } |
| const Function *getFunc() const { return func; } |
| |
| private: |
| GfxSeparationColorSpace(GooString *nameA, std::unique_ptr<GfxColorSpace> &&altA, Function *funcA, bool nonMarkingA, unsigned int overprintMaskA, int *mappingA); |
| |
| GooString *name; // colorant name |
| std::unique_ptr<GfxColorSpace> alt; // alternate color space |
| Function *func; // tint transform (into alternate color space) |
| bool nonMarking; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxDeviceNColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxDeviceNColorSpace : public GfxColorSpace |
| { |
| public: |
| GfxDeviceNColorSpace(int nCompsA, std::vector<std::string> &&namesA, std::unique_ptr<GfxColorSpace> &&alt, Function *func, std::vector<std::unique_ptr<GfxSeparationColorSpace>> *sepsCS); |
| ~GfxDeviceNColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csDeviceN; } |
| |
| // Construct a DeviceN color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(GfxResources *res, Array *arr, OutputDev *out, GfxState *state, int recursion); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| void createMapping(std::vector<std::unique_ptr<GfxSeparationColorSpace>> *separationList, int maxSepComps) override; |
| |
| int getNComps() const override { return nComps; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| bool isNonMarking() const override { return nonMarking; } |
| |
| // DeviceN-specific access. |
| const std::string &getColorantName(int i) const { return names[i]; } |
| GfxColorSpace *getAlt() { return alt.get(); } |
| const Function *getTintTransformFunc() const { return func; } |
| |
| private: |
| GfxDeviceNColorSpace(int nCompsA, const std::vector<std::string> &namesA, std::unique_ptr<GfxColorSpace> &&alt, Function *func, std::vector<std::unique_ptr<GfxSeparationColorSpace>> *sepsCSA, int *mappingA, bool nonMarkingA, |
| unsigned int overprintMaskA); |
| |
| const int nComps; // number of components |
| const std::vector<std::string> names; // colorant names |
| std::unique_ptr<GfxColorSpace> alt; // alternate color space |
| Function *func; // tint transform (into alternate color space) |
| bool nonMarking; |
| std::vector<std::unique_ptr<GfxSeparationColorSpace>> *sepsCS; // list of separation cs for spot colorants; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxPatternColorSpace |
| //------------------------------------------------------------------------ |
| |
| class GfxPatternColorSpace : public GfxColorSpace |
| { |
| public: |
| explicit GfxPatternColorSpace(std::unique_ptr<GfxColorSpace> &&underA); |
| ~GfxPatternColorSpace() override; |
| std::unique_ptr<GfxColorSpace> copy() const override; |
| GfxColorSpaceMode getMode() const override { return csPattern; } |
| |
| // Construct a Pattern color space. Returns nullptr if unsuccessful. |
| static std::unique_ptr<GfxColorSpace> parse(GfxResources *res, Array *arr, OutputDev *out, GfxState *state, int recursion); |
| |
| void getGray(const GfxColor *color, GfxGray *gray) const override; |
| void getRGB(const GfxColor *color, GfxRGB *rgb) const override; |
| void getCMYK(const GfxColor *color, GfxCMYK *cmyk) const override; |
| void getDeviceN(const GfxColor *color, GfxColor *deviceN) const override; |
| |
| int getNComps() const override { return 0; } |
| void getDefaultColor(GfxColor *color) const override; |
| |
| // Pattern-specific access. |
| GfxColorSpace *getUnder() { return under.get(); } |
| |
| private: |
| std::unique_ptr<GfxColorSpace> under; // underlying color space (for uncolored patterns) |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxPattern |
| //------------------------------------------------------------------------ |
| |
| class GfxPattern |
| { |
| public: |
| GfxPattern(int typeA, int patternRefNumA); |
| virtual ~GfxPattern(); |
| |
| GfxPattern(const GfxPattern &) = delete; |
| GfxPattern &operator=(const GfxPattern &other) = delete; |
| |
| static GfxPattern *parse(GfxResources *res, Object *obj, OutputDev *out, GfxState *state, int patternRefNum); |
| |
| virtual GfxPattern *copy() const = 0; |
| |
| int getType() const { return type; } |
| |
| int getPatternRefNum() const { return patternRefNum; } |
| |
| private: |
| int type; |
| int patternRefNum; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxTilingPattern |
| //------------------------------------------------------------------------ |
| |
| class GfxTilingPattern : public GfxPattern |
| { |
| public: |
| static GfxTilingPattern *parse(Object *patObj, int patternRefNum); |
| ~GfxTilingPattern() override; |
| |
| GfxPattern *copy() const override; |
| |
| int getPaintType() const { return paintType; } |
| int getTilingType() const { return tilingType; } |
| const double *getBBox() const { return bbox; } |
| double getXStep() const { return xStep; } |
| double getYStep() const { return yStep; } |
| Dict *getResDict() { return resDict.isDict() ? resDict.getDict() : (Dict *)nullptr; } |
| const double *getMatrix() const { return matrix; } |
| Object *getContentStream() { return &contentStream; } |
| |
| private: |
| GfxTilingPattern(int paintTypeA, int tilingTypeA, const double *bboxA, double xStepA, double yStepA, const Object *resDictA, const double *matrixA, const Object *contentStreamA, int patternRefNumA); |
| |
| int paintType; |
| int tilingType; |
| double bbox[4]; |
| double xStep, yStep; |
| Object resDict; |
| double matrix[6]; |
| Object contentStream; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxShadingPattern |
| //------------------------------------------------------------------------ |
| |
| class GfxShadingPattern : public GfxPattern |
| { |
| public: |
| static GfxShadingPattern *parse(GfxResources *res, Object *patObj, OutputDev *out, GfxState *state, int patternRefNum); |
| ~GfxShadingPattern() override; |
| |
| GfxPattern *copy() const override; |
| |
| GfxShading *getShading() { return shading; } |
| const double *getMatrix() const { return matrix; } |
| |
| private: |
| GfxShadingPattern(GfxShading *shadingA, const double *matrixA, int patternRefNumA); |
| |
| GfxShading *shading; |
| double matrix[6]; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxShading |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxShading |
| { |
| public: |
| enum ShadingType |
| { |
| FunctionBasedShading = 1, |
| AxialShading, |
| RadialShading, |
| FreeFormGouraudShadedTriangleMesh, |
| LatticeFormGouraudShadedTriangleMesh, |
| CoonsPatchMesh, |
| TensorProductPatchMesh |
| }; |
| |
| explicit GfxShading(int typeA); |
| explicit GfxShading(const GfxShading *shading); |
| virtual ~GfxShading(); |
| |
| GfxShading(const GfxShading &) = delete; |
| GfxShading &operator=(const GfxShading &other) = delete; |
| |
| static GfxShading *parse(GfxResources *res, Object *obj, OutputDev *out, GfxState *state); |
| |
| virtual GfxShading *copy() const = 0; |
| |
| ShadingType getType() const { return type; } |
| GfxColorSpace *getColorSpace() { return colorSpace.get(); } |
| const GfxColor *getBackground() const { return &background; } |
| bool getHasBackground() const { return hasBackground; } |
| void getBBox(double *xMinA, double *yMinA, double *xMaxA, double *yMaxA) const |
| { |
| *xMinA = bbox_xMin; |
| *yMinA = bbox_yMin; |
| *xMaxA = bbox_xMax; |
| *yMaxA = bbox_yMax; |
| } |
| bool getHasBBox() const { return hasBBox; } |
| |
| protected: |
| virtual bool init(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state); |
| |
| ShadingType type; |
| bool hasBackground; |
| bool hasBBox; |
| std::unique_ptr<GfxColorSpace> colorSpace; |
| GfxColor background; |
| double bbox_xMin, bbox_yMin, bbox_xMax, bbox_yMax; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxUnivariateShading |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxUnivariateShading : public GfxShading |
| { |
| public: |
| GfxUnivariateShading(int typeA, double t0A, double t1A, std::vector<std::unique_ptr<Function>> &&funcsA, bool extend0A, bool extend1A); |
| explicit GfxUnivariateShading(const GfxUnivariateShading *shading); |
| ~GfxUnivariateShading() override; |
| |
| double getDomain0() const { return t0; } |
| double getDomain1() const { return t1; } |
| bool getExtend0() const { return extend0; } |
| bool getExtend1() const { return extend1; } |
| int getNFuncs() const { return funcs.size(); } |
| const Function *getFunc(int i) const { return funcs[i].get(); } |
| // returns the nComps of the shading |
| // i.e. how many positions of color have been set |
| int getColor(double t, GfxColor *color); |
| |
| void setupCache(const Matrix *ctm, double xMin, double yMin, double xMax, double yMax); |
| |
| virtual void getParameterRange(double *lower, double *upper, double xMin, double yMin, double xMax, double yMax) = 0; |
| |
| virtual double getDistance(double sMin, double sMax) const = 0; |
| |
| protected: |
| bool init(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state) override; |
| |
| private: |
| double t0, t1; |
| std::vector<std::unique_ptr<Function>> funcs; |
| bool extend0, extend1; |
| |
| int cacheSize, lastMatch; |
| double *cacheBounds; |
| double *cacheCoeff; |
| double *cacheValues; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxFunctionShading |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxFunctionShading : public GfxShading |
| { |
| public: |
| GfxFunctionShading(double x0A, double y0A, double x1A, double y1A, const double *matrixA, std::vector<std::unique_ptr<Function>> &&funcsA); |
| explicit GfxFunctionShading(const GfxFunctionShading *shading); |
| ~GfxFunctionShading() override; |
| |
| static GfxFunctionShading *parse(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state); |
| |
| GfxShading *copy() const override; |
| |
| void getDomain(double *x0A, double *y0A, double *x1A, double *y1A) const |
| { |
| *x0A = x0; |
| *y0A = y0; |
| *x1A = x1; |
| *y1A = y1; |
| } |
| const double *getMatrix() const { return matrix; } |
| int getNFuncs() const { return funcs.size(); } |
| const Function *getFunc(int i) const { return funcs[i].get(); } |
| void getColor(double x, double y, GfxColor *color) const; |
| |
| protected: |
| bool init(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state) override; |
| |
| private: |
| double x0, y0, x1, y1; |
| double matrix[6]; |
| std::vector<std::unique_ptr<Function>> funcs; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxAxialShading |
| //------------------------------------------------------------------------ |
| |
| class GfxAxialShading : public GfxUnivariateShading |
| { |
| public: |
| GfxAxialShading(double x0A, double y0A, double x1A, double y1A, double t0A, double t1A, std::vector<std::unique_ptr<Function>> &&funcsA, bool extend0A, bool extend1A); |
| explicit GfxAxialShading(const GfxAxialShading *shading); |
| ~GfxAxialShading() override; |
| |
| static GfxAxialShading *parse(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state); |
| |
| GfxShading *copy() const override; |
| |
| void getCoords(double *x0A, double *y0A, double *x1A, double *y1A) const |
| { |
| *x0A = x0; |
| *y0A = y0; |
| *x1A = x1; |
| *y1A = y1; |
| } |
| |
| void getParameterRange(double *lower, double *upper, double xMin, double yMin, double xMax, double yMax) override; |
| |
| double getDistance(double sMin, double sMax) const override; |
| |
| private: |
| double x0, y0, x1, y1; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxRadialShading |
| //------------------------------------------------------------------------ |
| |
| class GfxRadialShading : public GfxUnivariateShading |
| { |
| public: |
| GfxRadialShading(double x0A, double y0A, double r0A, double x1A, double y1A, double r1A, double t0A, double t1A, std::vector<std::unique_ptr<Function>> &&funcsA, bool extend0A, bool extend1A); |
| explicit GfxRadialShading(const GfxRadialShading *shading); |
| ~GfxRadialShading() override; |
| |
| static GfxRadialShading *parse(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state); |
| |
| GfxShading *copy() const override; |
| |
| void getCoords(double *x0A, double *y0A, double *r0A, double *x1A, double *y1A, double *r1A) const |
| { |
| *x0A = x0; |
| *y0A = y0; |
| *r0A = r0; |
| *x1A = x1; |
| *y1A = y1; |
| *r1A = r1; |
| } |
| |
| void getParameterRange(double *lower, double *upper, double xMin, double yMin, double xMax, double yMax) override; |
| |
| double getDistance(double sMin, double sMax) const override; |
| |
| private: |
| double x0, y0, r0, x1, y1, r1; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxGouraudTriangleShading |
| //------------------------------------------------------------------------ |
| |
| struct GfxGouraudVertex |
| { |
| double x, y; |
| GfxColor color; |
| }; |
| |
| class POPPLER_PRIVATE_EXPORT GfxGouraudTriangleShading : public GfxShading |
| { |
| public: |
| GfxGouraudTriangleShading(int typeA, GfxGouraudVertex *verticesA, int nVerticesA, int (*trianglesA)[3], int nTrianglesA, std::vector<std::unique_ptr<Function>> &&funcsA); |
| explicit GfxGouraudTriangleShading(const GfxGouraudTriangleShading *shading); |
| ~GfxGouraudTriangleShading() override; |
| |
| static GfxGouraudTriangleShading *parse(GfxResources *res, int typeA, Dict *dict, Stream *str, OutputDev *out, GfxState *state); |
| |
| GfxShading *copy() const override; |
| |
| int getNTriangles() const { return nTriangles; } |
| |
| bool isParameterized() const { return !funcs.empty(); } |
| |
| /** |
| * @precondition isParameterized() == true |
| */ |
| double getParameterDomainMin() const |
| { |
| assert(isParameterized()); |
| return funcs[0]->getDomainMin(0); |
| } |
| |
| /** |
| * @precondition isParameterized() == true |
| */ |
| double getParameterDomainMax() const |
| { |
| assert(isParameterized()); |
| return funcs[0]->getDomainMax(0); |
| } |
| |
| /** |
| * @precondition isParameterized() == false |
| */ |
| void getTriangle(int i, double *x0, double *y0, GfxColor *color0, double *x1, double *y1, GfxColor *color1, double *x2, double *y2, GfxColor *color2); |
| |
| /** |
| * Variant for functions. |
| * |
| * @precondition isParameterized() == true |
| */ |
| void getTriangle(int i, double *x0, double *y0, double *color0, double *x1, double *y1, double *color1, double *x2, double *y2, double *color2); |
| |
| void getParameterizedColor(double t, GfxColor *color) const; |
| |
| protected: |
| bool init(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state) override; |
| |
| private: |
| GfxGouraudVertex *vertices; |
| int nVertices; |
| int (*triangles)[3]; |
| int nTriangles; |
| std::vector<std::unique_ptr<Function>> funcs; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxPatchMeshShading |
| //------------------------------------------------------------------------ |
| |
| /** |
| * A tensor product cubic bezier patch consisting of 4x4 points and 4 color |
| * values. |
| * |
| * See the Shading Type 7 specifications. Note that Shading Type 6 is also |
| * represented using GfxPatch. |
| */ |
| struct GfxPatch |
| { |
| /** |
| * Represents a single color value for the patch. |
| */ |
| struct ColorValue |
| { |
| /** |
| * For parameterized patches, only element 0 is valid; it contains |
| * the single parameter. |
| * |
| * For non-parameterized patches, c contains all color components |
| * as decoded from the input stream. In this case, you will need to |
| * use dblToCol() before assigning them to GfxColor. |
| */ |
| double c[gfxColorMaxComps]; |
| }; |
| |
| double x[4][4]; |
| double y[4][4]; |
| ColorValue color[2][2]; |
| }; |
| |
| class POPPLER_PRIVATE_EXPORT GfxPatchMeshShading : public GfxShading |
| { |
| public: |
| GfxPatchMeshShading(int typeA, GfxPatch *patchesA, int nPatchesA, std::vector<std::unique_ptr<Function>> &&funcsA); |
| explicit GfxPatchMeshShading(const GfxPatchMeshShading *shading); |
| ~GfxPatchMeshShading() override; |
| |
| static GfxPatchMeshShading *parse(GfxResources *res, int typeA, Dict *dict, Stream *str, OutputDev *out, GfxState *state); |
| |
| GfxShading *copy() const override; |
| |
| int getNPatches() const { return nPatches; } |
| const GfxPatch *getPatch(int i) const { return &patches[i]; } |
| |
| bool isParameterized() const { return !funcs.empty(); } |
| |
| /** |
| * @precondition isParameterized() == true |
| */ |
| double getParameterDomainMin() const |
| { |
| assert(isParameterized()); |
| return funcs[0]->getDomainMin(0); |
| } |
| |
| /** |
| * @precondition isParameterized() == true |
| */ |
| double getParameterDomainMax() const |
| { |
| assert(isParameterized()); |
| return funcs[0]->getDomainMax(0); |
| } |
| |
| void getParameterizedColor(double t, GfxColor *color) const; |
| |
| protected: |
| bool init(GfxResources *res, Dict *dict, OutputDev *out, GfxState *state) override; |
| |
| private: |
| GfxPatch *patches; |
| int nPatches; |
| std::vector<std::unique_ptr<Function>> funcs; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxImageColorMap |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxImageColorMap |
| { |
| public: |
| // Constructor. |
| GfxImageColorMap(int bitsA, Object *decode, std::unique_ptr<GfxColorSpace> &&colorSpaceA); |
| |
| // Destructor. |
| ~GfxImageColorMap(); |
| |
| GfxImageColorMap(const GfxImageColorMap &) = delete; |
| GfxImageColorMap &operator=(const GfxImageColorMap &) = delete; |
| |
| // Return a copy of this color map. |
| GfxImageColorMap *copy() const { return new GfxImageColorMap(this); } |
| |
| // Is color map valid? |
| bool isOk() const { return ok; } |
| |
| // Get the color space. |
| GfxColorSpace *getColorSpace() { return colorSpace.get(); } |
| |
| // Get stream decoding info. |
| int getNumPixelComps() const { return nComps; } |
| int getBits() const { return bits; } |
| |
| // Get decode table. |
| double getDecodeLow(int i) const { return decodeLow[i]; } |
| double getDecodeHigh(int i) const { return decodeLow[i] + decodeRange[i]; } |
| |
| bool useRGBLine() const { return (colorSpace2 && colorSpace2->useGetRGBLine()) || (!colorSpace2 && colorSpace->useGetRGBLine()); } |
| bool useCMYKLine() const { return (colorSpace2 && colorSpace2->useGetCMYKLine()) || (!colorSpace2 && colorSpace->useGetCMYKLine()); } |
| bool useDeviceNLine() const { return (colorSpace2 && colorSpace2->useGetDeviceNLine()) || (!colorSpace2 && colorSpace->useGetDeviceNLine()); } |
| |
| // Convert an image pixel to a color. |
| void getGray(const unsigned char *x, GfxGray *gray); |
| void getRGB(const unsigned char *x, GfxRGB *rgb); |
| void getRGBLine(unsigned char *in, unsigned int *out, int length); |
| void getRGBLine(unsigned char *in, unsigned char *out, int length); |
| void getRGBXLine(unsigned char *in, unsigned char *out, int length); |
| void getGrayLine(unsigned char *in, unsigned char *out, int length); |
| void getCMYKLine(unsigned char *in, unsigned char *out, int length); |
| void getDeviceNLine(unsigned char *in, unsigned char *out, int length); |
| void getCMYK(const unsigned char *x, GfxCMYK *cmyk); |
| void getDeviceN(const unsigned char *x, GfxColor *deviceN); |
| void getColor(const unsigned char *x, GfxColor *color); |
| |
| // Matte color ops |
| void setMatteColor(const GfxColor *color) |
| { |
| useMatte = true; |
| matteColor = *color; |
| } |
| const GfxColor *getMatteColor() const { return (useMatte) ? &matteColor : nullptr; } |
| |
| private: |
| explicit GfxImageColorMap(const GfxImageColorMap *colorMap); |
| |
| std::unique_ptr<GfxColorSpace> colorSpace; // the image color space |
| int bits; // bits per component |
| int nComps; // number of components in a pixel |
| GfxColorSpace *colorSpace2; // secondary color space |
| int nComps2; // number of components in colorSpace2 |
| GfxColorComp * // lookup table |
| lookup[gfxColorMaxComps]; |
| GfxColorComp * // optimized case lookup table |
| lookup2[gfxColorMaxComps]; |
| unsigned char *byte_lookup; |
| double // minimum values for each component |
| decodeLow[gfxColorMaxComps]; |
| double // max - min value for each component |
| decodeRange[gfxColorMaxComps]; |
| bool useMatte; |
| GfxColor matteColor; |
| bool ok; |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxSubpath and GfxPath |
| //------------------------------------------------------------------------ |
| |
| class GfxSubpath |
| { |
| public: |
| // Constructor. |
| GfxSubpath(double x1, double y1); |
| |
| // Destructor. |
| ~GfxSubpath(); |
| |
| GfxSubpath(const GfxSubpath &) = delete; |
| GfxSubpath &operator=(const GfxSubpath &) = delete; |
| |
| // Copy. |
| GfxSubpath *copy() const { return new GfxSubpath(this); } |
| |
| // Get points. |
| int getNumPoints() const { return n; } |
| double getX(int i) const { return x[i]; } |
| double getY(int i) const { return y[i]; } |
| bool getCurve(int i) const { return curve[i]; } |
| |
| void setX(int i, double a) { x[i] = a; } |
| void setY(int i, double a) { y[i] = a; } |
| |
| // Get last point. |
| double getLastX() const { return x[n - 1]; } |
| double getLastY() const { return y[n - 1]; } |
| |
| // Add a line segment. |
| void lineTo(double x1, double y1); |
| |
| // Add a Bezier curve. |
| void curveTo(double x1, double y1, double x2, double y2, double x3, double y3); |
| |
| // Close the subpath. |
| void close(); |
| bool isClosed() const { return closed; } |
| |
| // Add (<dx>, <dy>) to each point in the subpath. |
| void offset(double dx, double dy); |
| |
| private: |
| double *x, *y; // points |
| bool *curve; // curve[i] => point i is a control point |
| // for a Bezier curve |
| int n; // number of points |
| int size; // size of x/y arrays |
| bool closed; // set if path is closed |
| |
| explicit GfxSubpath(const GfxSubpath *subpath); |
| }; |
| |
| class POPPLER_PRIVATE_EXPORT GfxPath |
| { |
| public: |
| // Constructor. |
| GfxPath(); |
| |
| // Destructor. |
| ~GfxPath(); |
| |
| GfxPath(const GfxPath &) = delete; |
| GfxPath &operator=(const GfxPath &) = delete; |
| |
| // Copy. |
| GfxPath *copy() const { return new GfxPath(justMoved, firstX, firstY, subpaths, n, size); } |
| |
| // Is there a current point? |
| bool isCurPt() const { return n > 0 || justMoved; } |
| |
| // Is the path non-empty, i.e., is there at least one segment? |
| bool isPath() const { return n > 0; } |
| |
| // Get subpaths. |
| int getNumSubpaths() const { return n; } |
| GfxSubpath *getSubpath(int i) { return subpaths[i]; } |
| const GfxSubpath *getSubpath(int i) const { return subpaths[i]; } |
| |
| // Get last point on last subpath. |
| double getLastX() const { return subpaths[n - 1]->getLastX(); } |
| double getLastY() const { return subpaths[n - 1]->getLastY(); } |
| |
| // Move the current point. |
| void moveTo(double x, double y); |
| |
| // Add a segment to the last subpath. |
| void lineTo(double x, double y); |
| |
| // Add a Bezier curve to the last subpath |
| void curveTo(double x1, double y1, double x2, double y2, double x3, double y3); |
| |
| // Close the last subpath. |
| void close(); |
| |
| // Append <path> to <this>. |
| void append(GfxPath *path); |
| |
| // Add (<dx>, <dy>) to each point in the path. |
| void offset(double dx, double dy); |
| |
| private: |
| bool justMoved; // set if a new subpath was just started |
| double firstX, firstY; // first point in new subpath |
| GfxSubpath **subpaths; // subpaths |
| int n; // number of subpaths |
| int size; // size of subpaths array |
| |
| GfxPath(bool justMoved1, double firstX1, double firstY1, GfxSubpath **subpaths1, int n1, int size1); |
| }; |
| |
| //------------------------------------------------------------------------ |
| // GfxState |
| //------------------------------------------------------------------------ |
| |
| class POPPLER_PRIVATE_EXPORT GfxState |
| { |
| public: |
| /** |
| * When GfxState::getReusablePath() is invoked, the currently active |
| * path is taken per reference and its coordinates can be re-edited. |
| * |
| * A ReusablePathIterator is intended to reduce overhead when the same |
| * path type is used a lot of times, only with different coordinates. It |
| * allows just to update the coordinates (occurring in the same order as |
| * in the original path). |
| */ |
| class ReusablePathIterator |
| { |
| public: |
| /** |
| * Creates the ReusablePathIterator. This should only be done from |
| * GfxState::getReusablePath(). |
| * |
| * @param path the path as it is used so far. Changing this path, |
| * deleting it or starting a new path from scratch will most likely |
| * invalidate the iterator (and may cause serious problems). Make |
| * sure the path's memory structure is not changed during the |
| * lifetime of the ReusablePathIterator. |
| */ |
| explicit ReusablePathIterator(GfxPath *path); |
| |
| /** |
| * Returns true if and only if the current iterator position is |
| * beyond the last valid point. |
| * |
| * A call to setCoord() will be undefined. |
| */ |
| bool isEnd() const; |
| |
| /** |
| * Advances the iterator. |
| */ |
| void next(); |
| |
| /** |
| * Updates the coordinates associated to the current iterator |
| * position. |
| */ |
| void setCoord(double x, double y); |
| |
| /** |
| * Resets the iterator. |
| */ |
| void reset(); |
| |
| private: |
| GfxPath *path; |
| int subPathOff; |
| |
| int coordOff; |
| int numCoords; |
| |
| GfxSubpath *curSubPath; |
| }; |
| |
| enum LineJoinStyle |
| { |
| LineJoinMitre, |
| LineJoinRound, |
| LineJoinBevel |
| }; |
| |
| enum LineCapStyle |
| { |
| LineCapButt, |
| LineCapRound, |
| LineCapProjecting |
| }; |
| // Construct a default GfxState, for a device with resolution <hDPI> |
| // x <vDPI>, page box <pageBox>, page rotation <rotateA>, and |
| // coordinate system specified by <upsideDown>. |
| GfxState(double hDPIA, double vDPIA, const PDFRectangle *pageBox, int rotateA, bool upsideDown); |
| |
| // Destructor. |
| ~GfxState(); |
| |
| GfxState(const GfxState &) = delete; |
| GfxState &operator=(const GfxState &) = delete; |
| |
| // Copy. |
| GfxState *copy(bool copyPath = false) const { return new GfxState(this, copyPath); } |
| |
| // Accessors. |
| double getHDPI() const { return hDPI; } |
| double getVDPI() const { return vDPI; } |
| const double *getCTM() const { return ctm; } |
| void getCTM(Matrix *m) const { memcpy(m->m, ctm, sizeof m->m); } |
| double getX1() const { return px1; } |
| double getY1() const { return py1; } |
| double getX2() const { return px2; } |
| double getY2() const { return py2; } |
| double getPageWidth() const { return pageWidth; } |
| double getPageHeight() const { return pageHeight; } |
| int getRotate() const { return rotate; } |
| const GfxColor *getFillColor() const { return &fillColor; } |
| const GfxColor *getStrokeColor() const { return &strokeColor; } |
| void getFillGray(GfxGray *gray) { fillColorSpace->getGray(&fillColor, gray); } |
| void getStrokeGray(GfxGray *gray) { strokeColorSpace->getGray(&strokeColor, gray); } |
| void getFillRGB(GfxRGB *rgb) const { fillColorSpace->getRGB(&fillColor, rgb); } |
| void getStrokeRGB(GfxRGB *rgb) const { strokeColorSpace->getRGB(&strokeColor, rgb); } |
| void getFillCMYK(GfxCMYK *cmyk) { fillColorSpace->getCMYK(&fillColor, cmyk); } |
| void getFillDeviceN(GfxColor *deviceN) { fillColorSpace->getDeviceN(&fillColor, deviceN); } |
| void getStrokeCMYK(GfxCMYK *cmyk) { strokeColorSpace->getCMYK(&strokeColor, cmyk); } |
| void getStrokeDeviceN(GfxColor *deviceN) { strokeColorSpace->getDeviceN(&strokeColor, deviceN); } |
| GfxColorSpace *getFillColorSpace() { return fillColorSpace.get(); } |
| GfxColorSpace *getStrokeColorSpace() { return strokeColorSpace.get(); } |
| GfxPattern *getFillPattern() { return fillPattern; } |
| GfxPattern *getStrokePattern() { return strokePattern; } |
| GfxBlendMode getBlendMode() const { return blendMode; } |
| double getFillOpacity() const { return fillOpacity; } |
| double getStrokeOpacity() const { return strokeOpacity; } |
| bool getFillOverprint() const { return fillOverprint; } |
| bool getStrokeOverprint() const { return strokeOverprint; } |
| int getOverprintMode() const { return overprintMode; } |
| Function **getTransfer() { return transfer; } |
| double getLineWidth() const { return lineWidth; } |
| const std::vector<double> &getLineDash(double *start) |
| { |
| *start = lineDashStart; |
| return lineDash; |
| } |
| int getFlatness() const { return flatness; } |
| LineJoinStyle getLineJoin() const { return lineJoin; } |
| LineCapStyle getLineCap() const { return lineCap; } |
| double getMiterLimit() const { return miterLimit; } |
| bool getStrokeAdjust() const { return strokeAdjust; } |
| bool getAlphaIsShape() const { return alphaIsShape; } |
| bool getTextKnockout() const { return textKnockout; } |
| const std::shared_ptr<GfxFont> &getFont() const { return font; } |
| double getFontSize() const { return fontSize; } |
| const double *getTextMat() const { return textMat; } |
| double getCharSpace() const { return charSpace; } |
| double getWordSpace() const { return wordSpace; } |
| double getHorizScaling() const { return horizScaling; } |
| double getLeading() const { return leading; } |
| double getRise() const { return rise; } |
| int getRender() const { return render; } |
| const char *getRenderingIntent() const { return renderingIntent; } |
| const GfxPath *getPath() const { return path; } |
| void setPath(GfxPath *pathA); |
| double getCurX() const { return curX; } |
| double getCurY() const { return curY; } |
| void getClipBBox(double *xMin, double *yMin, double *xMax, double *yMax) const |
| { |
| *xMin = clipXMin; |
| *yMin = clipYMin; |
| *xMax = clipXMax; |
| *yMax = clipYMax; |
| } |
| void getUserClipBBox(double *xMin, double *yMin, double *xMax, double *yMax) const; |
| double getLineX() const { return lineX; } |
| double getLineY() const { return lineY; } |
| |
| // Is there a current point/path? |
| bool isCurPt() const { return path->isCurPt(); } |
| bool isPath() const { return path->isPath(); } |
| |
| // Transforms. |
| void transform(double x1, double y1, double *x2, double *y2) const |
| { |
| *x2 = ctm[0] * x1 + ctm[2] * y1 + ctm[4]; |
| *y2 = ctm[1] * x1 + ctm[3] * y1 + ctm[5]; |
| } |
| void transformDelta(double x1, double y1, double *x2, double *y2) const |
| { |
| *x2 = ctm[0] * x1 + ctm[2] * y1; |
| *y2 = ctm[1] * x1 + ctm[3] * y1; |
| } |
| void textTransform(double x1, double y1, double *x2, double *y2) const |
| { |
| *x2 = textMat[0] * x1 + textMat[2] * y1 + textMat[4]; |
| *y2 = textMat[1] * x1 + textMat[3] * y1 + textMat[5]; |
| } |
| void textTransformDelta(double x1, double y1, double *x2, double *y2) const |
| { |
| *x2 = textMat[0] * x1 + textMat[2] * y1; |
| *y2 = textMat[1] * x1 + textMat[3] * y1; |
| } |
| double transformWidth(double w) const; |
| double getTransformedLineWidth() const { return transformWidth(lineWidth); } |
| double getTransformedFontSize() const; |
| void getFontTransMat(double *m11, double *m12, double *m21, double *m22) const; |
| |
| // Change state parameters. |
| void setCTM(double a, double b, double c, double d, double e, double f); |
| void concatCTM(double a, double b, double c, double d, double e, double f); |
| void shiftCTMAndClip(double tx, double ty); |
| void setFillColorSpace(std::unique_ptr<GfxColorSpace> &&colorSpace); |
| void setStrokeColorSpace(std::unique_ptr<GfxColorSpace> &&colorSpace); |
| void setFillColor(const GfxColor *color) { fillColor = *color; } |
| void setStrokeColor(const GfxColor *color) { strokeColor = *color; } |
| void setFillPattern(GfxPattern *pattern); |
| void setStrokePattern(GfxPattern *pattern); |
| void setBlendMode(GfxBlendMode mode) { blendMode = mode; } |
| void setFillOpacity(double opac) { fillOpacity = opac; } |
| void setStrokeOpacity(double opac) { strokeOpacity = opac; } |
| void setFillOverprint(bool op) { fillOverprint = op; } |
| void setStrokeOverprint(bool op) { strokeOverprint = op; } |
| void setOverprintMode(int op) { overprintMode = op; } |
| void setTransfer(Function **funcs); |
| void setLineWidth(double width) { lineWidth = width; } |
| void setLineDash(std::vector<double> &&dash, double start); |
| void setFlatness(int flatness1) { flatness = flatness1; } |
| void setLineJoin(int lineJoin1) { lineJoin = static_cast<LineJoinStyle>(lineJoin1); } |
| void setLineCap(int lineCap1) { lineCap = static_cast<LineCapStyle>(lineCap1); } |
| void setMiterLimit(double limit) { miterLimit = limit; } |
| void setStrokeAdjust(bool sa) { strokeAdjust = sa; } |
| void setAlphaIsShape(bool ais) { alphaIsShape = ais; } |
| void setTextKnockout(bool tk) { textKnockout = tk; } |
| void setFont(std::shared_ptr<GfxFont> fontA, double fontSizeA); |
| void setTextMat(double a, double b, double c, double d, double e, double f) |
| { |
| textMat[0] = a; |
| textMat[1] = b; |
| textMat[2] = c; |
| textMat[3] = d; |
| textMat[4] = e; |
| textMat[5] = f; |
| } |
| void setCharSpace(double space) { charSpace = space; } |
| void setWordSpace(double space) { wordSpace = space; } |
| void setHorizScaling(double scale) { horizScaling = 0.01 * scale; } |
| void setLeading(double leadingA) { leading = leadingA; } |
| void setRise(double riseA) { rise = riseA; } |
| void setRender(int renderA) { render = renderA; } |
| void setRenderingIntent(const char *intent) { strncpy(renderingIntent, intent, 31); } |
| |
| #ifdef USE_CMS |
| void setDisplayProfile(const GfxLCMSProfilePtr &localDisplayProfileA); |
| GfxLCMSProfilePtr getDisplayProfile() { return localDisplayProfile; } |
| std::shared_ptr<GfxColorTransform> getXYZ2DisplayTransform(); |
| int getCmsRenderingIntent(); |
| static GfxLCMSProfilePtr sRGBProfile; |
| #endif |
| |
| void setDefaultGrayColorSpace(std::unique_ptr<GfxColorSpace> &&cs) { defaultGrayColorSpace = std::move(cs); } |
| |
| void setDefaultRGBColorSpace(std::unique_ptr<GfxColorSpace> &&cs) { defaultRGBColorSpace = std::move(cs); } |
| |
| void setDefaultCMYKColorSpace(std::unique_ptr<GfxColorSpace> &&cs) { defaultCMYKColorSpace = std::move(cs); } |
| |
| std::unique_ptr<GfxColorSpace> copyDefaultGrayColorSpace() |
| { |
| if (defaultGrayColorSpace) { |
| return defaultGrayColorSpace->copy(); |
| } |
| return std::make_unique<GfxDeviceGrayColorSpace>(); |
| } |
| |
| std::unique_ptr<GfxColorSpace> copyDefaultRGBColorSpace() |
| { |
| if (defaultRGBColorSpace) { |
| return defaultRGBColorSpace->copy(); |
| } |
| return std::make_unique<GfxDeviceRGBColorSpace>(); |
| } |
| |
| std::unique_ptr<GfxColorSpace> copyDefaultCMYKColorSpace() |
| { |
| if (defaultCMYKColorSpace) { |
| return defaultCMYKColorSpace->copy(); |
| } |
| return std::make_unique<GfxDeviceCMYKColorSpace>(); |
| } |
| |
| // Add to path. |
| void moveTo(double x, double y) { path->moveTo(curX = x, curY = y); } |
| void lineTo(double x, double y) { path->lineTo(curX = x, curY = y); } |
| void curveTo(double x1, double y1, double x2, double y2, double x3, double y3) { path->curveTo(x1, y1, x2, y2, curX = x3, curY = y3); } |
| void closePath() |
| { |
| path->close(); |
| curX = path->getLastX(); |
| curY = path->getLastY(); |
| } |
| void clearPath(); |
| |
| // Update clip region. |
| void clip(); |
| void clipToStrokePath(); |
| void clipToRect(double xMin, double yMin, double xMax, double yMax); |
| |
| // Text position. |
| void textSetPos(double tx, double ty) |
| { |
| lineX = tx; |
| lineY = ty; |
| } |
| void textMoveTo(double tx, double ty) |
| { |
| lineX = tx; |
| lineY = ty; |
| textTransform(tx, ty, &curX, &curY); |
| } |
| void textShift(double tx, double ty); |
| void shift(double dx, double dy); |
| |
| // Push/pop GfxState on/off stack. |
| GfxState *save(); |
| GfxState *restore(); |
| bool hasSaves() const { return saved != nullptr; } |
| bool isParentState(GfxState *state) { return saved == state || (saved && saved->isParentState(state)); } |
| |
| // Misc |
| bool parseBlendMode(Object *obj, GfxBlendMode *mode); |
| |
| ReusablePathIterator *getReusablePath() { return new ReusablePathIterator(path); } |
| |
| private: |
| double hDPI, vDPI; // resolution |
| double ctm[6]; // coord transform matrix |
| double px1, py1, px2, py2; // page corners (user coords) |
| double pageWidth, pageHeight; // page size (pixels) |
| int rotate; // page rotation angle |
| |
| std::unique_ptr<GfxColorSpace> fillColorSpace; // fill color space |
| std::unique_ptr<GfxColorSpace> strokeColorSpace; // stroke color space |
| GfxColor fillColor; // fill color |
| GfxColor strokeColor; // stroke color |
| GfxPattern *fillPattern; // fill pattern |
| GfxPattern *strokePattern; // stroke pattern |
| GfxBlendMode blendMode; // transparency blend mode |
| double fillOpacity; // fill opacity |
| double strokeOpacity; // stroke opacity |
| bool fillOverprint; // fill overprint |
| bool strokeOverprint; // stroke overprint |
| int overprintMode; // overprint mode |
| Function *transfer[4]; // transfer function (entries may be: all |
| // nullptr = identity; last three nullptr = |
| // single function; all four non-nullptr = |
| // R,G,B,gray functions) |
| |
| double lineWidth; // line width |
| std::vector<double> lineDash; // line dash |
| double lineDashStart; |
| int flatness; // curve flatness |
| LineJoinStyle lineJoin; // line join style |
| LineCapStyle lineCap; // line cap style |
| double miterLimit; // line miter limit |
| bool strokeAdjust; // stroke adjustment |
| bool alphaIsShape; // alpha is shape |
| bool textKnockout; // text knockout |
| |
| std::shared_ptr<GfxFont> font; // font |
| double fontSize; // font size |
| double textMat[6]; // text matrix |
| double charSpace; // character spacing |
| double wordSpace; // word spacing |
| double horizScaling; // horizontal scaling |
| double leading; // text leading |
| double rise; // text rise |
| int render; // text rendering mode |
| |
| GfxPath *path; // array of path elements |
| double curX, curY; // current point (user coords) |
| double lineX, lineY; // start of current text line (text coords) |
| |
| double clipXMin, clipYMin, // bounding box for clip region |
| clipXMax, clipYMax; |
| char renderingIntent[32]; |
| |
| GfxState *saved; // next GfxState on stack |
| |
| GfxState(const GfxState *state, bool copyPath); |
| |
| #ifdef USE_CMS |
| GfxLCMSProfilePtr localDisplayProfile; |
| std::shared_ptr<GfxColorTransform> XYZ2DisplayTransformRelCol; |
| std::shared_ptr<GfxColorTransform> XYZ2DisplayTransformAbsCol; |
| std::shared_ptr<GfxColorTransform> XYZ2DisplayTransformSat; |
| std::shared_ptr<GfxColorTransform> XYZ2DisplayTransformPerc; |
| static GfxLCMSProfilePtr XYZProfile; |
| #endif |
| |
| std::unique_ptr<GfxColorSpace> defaultGrayColorSpace; |
| std::unique_ptr<GfxColorSpace> defaultRGBColorSpace; |
| std::unique_ptr<GfxColorSpace> defaultCMYKColorSpace; |
| }; |
| |
| #endif |