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-//========================================================================
-//
-// GfxState.h
-//
-// Copyright 1996-2003 Glyph & Cog, LLC
-//
-//========================================================================
-
-#ifndef GFXSTATE_H
-#define GFXSTATE_H
-
-#include <aconf.h>
-
-#ifdef USE_GCC_PRAGMAS
-#pragma interface
-#endif
-
-#include "gtypes.h"
-#include "Object.h"
-#include "Function.h"
-
-class Array;
-class GfxFont;
-class PDFRectangle;
-class GfxShading;
-
-//------------------------------------------------------------------------
-// GfxColor
-//------------------------------------------------------------------------
-
-#define gfxColorMaxComps funcMaxOutputs
-
-struct GfxColor {
- double c[gfxColorMaxComps];
-};
-
-//------------------------------------------------------------------------
-// GfxRGB
-//------------------------------------------------------------------------
-
-struct GfxRGB {
- double r, g, b;
-};
-
-//------------------------------------------------------------------------
-// GfxCMYK
-//------------------------------------------------------------------------
-
-struct GfxCMYK {
- double 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
-};
-
-class GfxColorSpace {
-public:
-
- GfxColorSpace();
- virtual ~GfxColorSpace();
- virtual GfxColorSpace *copy() = 0;
- virtual GfxColorSpaceMode getMode() = 0;
-
- // Construct a color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Object *csObj);
-
- // Convert to gray, RGB, or CMYK.
- virtual void getGray(GfxColor *color, double *gray) = 0;
- virtual void getRGB(GfxColor *color, GfxRGB *rgb) = 0;
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk) = 0;
-
- // Return the number of color components.
- virtual int getNComps() = 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);
-
- // Return the number of color space modes
- static int getNumColorSpaceModes();
-
- // Return the name of the <idx>th color space mode.
- static char *getColorSpaceModeName(int idx);
-
-private:
-};
-
-//------------------------------------------------------------------------
-// GfxDeviceGrayColorSpace
-//------------------------------------------------------------------------
-
-class GfxDeviceGrayColorSpace: public GfxColorSpace {
-public:
-
- GfxDeviceGrayColorSpace();
- virtual ~GfxDeviceGrayColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csDeviceGray; }
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 1; }
-
-private:
-};
-
-//------------------------------------------------------------------------
-// GfxCalGrayColorSpace
-//------------------------------------------------------------------------
-
-class GfxCalGrayColorSpace: public GfxColorSpace {
-public:
-
- GfxCalGrayColorSpace();
- virtual ~GfxCalGrayColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csCalGray; }
-
- // Construct a CalGray color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 1; }
-
- // CalGray-specific access.
- double getWhiteX() { return whiteX; }
- double getWhiteY() { return whiteY; }
- double getWhiteZ() { return whiteZ; }
- double getBlackX() { return blackX; }
- double getBlackY() { return blackY; }
- double getBlackZ() { return blackZ; }
- double getGamma() { return gamma; }
-
-private:
-
- double whiteX, whiteY, whiteZ; // white point
- double blackX, blackY, blackZ; // black point
- double gamma; // gamma value
-};
-
-//------------------------------------------------------------------------
-// GfxDeviceRGBColorSpace
-//------------------------------------------------------------------------
-
-class GfxDeviceRGBColorSpace: public GfxColorSpace {
-public:
-
- GfxDeviceRGBColorSpace();
- virtual ~GfxDeviceRGBColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csDeviceRGB; }
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 3; }
-
-private:
-};
-
-//------------------------------------------------------------------------
-// GfxCalRGBColorSpace
-//------------------------------------------------------------------------
-
-class GfxCalRGBColorSpace: public GfxColorSpace {
-public:
-
- GfxCalRGBColorSpace();
- virtual ~GfxCalRGBColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csCalRGB; }
-
- // Construct a CalRGB color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 3; }
-
- // CalRGB-specific access.
- double getWhiteX() { return whiteX; }
- double getWhiteY() { return whiteY; }
- double getWhiteZ() { return whiteZ; }
- double getBlackX() { return blackX; }
- double getBlackY() { return blackY; }
- double getBlackZ() { return blackZ; }
- double getGammaR() { return gammaR; }
- double getGammaG() { return gammaG; }
- double getGammaB() { return gammaB; }
- double *getMatrix() { 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
-};
-
-//------------------------------------------------------------------------
-// GfxDeviceCMYKColorSpace
-//------------------------------------------------------------------------
-
-class GfxDeviceCMYKColorSpace: public GfxColorSpace {
-public:
-
- GfxDeviceCMYKColorSpace();
- virtual ~GfxDeviceCMYKColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csDeviceCMYK; }
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 4; }
-
-private:
-};
-
-//------------------------------------------------------------------------
-// GfxLabColorSpace
-//------------------------------------------------------------------------
-
-class GfxLabColorSpace: public GfxColorSpace {
-public:
-
- GfxLabColorSpace();
- virtual ~GfxLabColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csLab; }
-
- // Construct a Lab color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 3; }
-
- virtual void getDefaultRanges(double *decodeLow, double *decodeRange,
- int maxImgPixel);
-
- // Lab-specific access.
- double getWhiteX() { return whiteX; }
- double getWhiteY() { return whiteY; }
- double getWhiteZ() { return whiteZ; }
- double getBlackX() { return blackX; }
- double getBlackY() { return blackY; }
- double getBlackZ() { return blackZ; }
- double getAMin() { return aMin; }
- double getAMax() { return aMax; }
- double getBMin() { return bMin; }
- double getBMax() { 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
- double kr, kg, kb; // gamut mapping mulitpliers
-};
-
-//------------------------------------------------------------------------
-// GfxICCBasedColorSpace
-//------------------------------------------------------------------------
-
-class GfxICCBasedColorSpace: public GfxColorSpace {
-public:
-
- GfxICCBasedColorSpace(int nCompsA, GfxColorSpace *altA,
- Ref *iccProfileStreamA);
- virtual ~GfxICCBasedColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csICCBased; }
-
- // Construct an ICCBased color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return nComps; }
-
- virtual void getDefaultRanges(double *decodeLow, double *decodeRange,
- int maxImgPixel);
-
- // ICCBased-specific access.
- GfxColorSpace *getAlt() { return alt; }
-
-private:
-
- int nComps; // number of color components (1, 3, or 4)
- 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
-};
-
-//------------------------------------------------------------------------
-// GfxIndexedColorSpace
-//------------------------------------------------------------------------
-
-class GfxIndexedColorSpace: public GfxColorSpace {
-public:
-
- GfxIndexedColorSpace(GfxColorSpace *baseA, int indexHighA);
- virtual ~GfxIndexedColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csIndexed; }
-
- // Construct a Lab color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 1; }
-
- virtual void getDefaultRanges(double *decodeLow, double *decodeRange,
- int maxImgPixel);
-
- // Indexed-specific access.
- GfxColorSpace *getBase() { return base; }
- int getIndexHigh() { return indexHigh; }
- Guchar *getLookup() { return lookup; }
- GfxColor *mapColorToBase(GfxColor *color, GfxColor *baseColor);
-
-private:
-
- GfxColorSpace *base; // base color space
- int indexHigh; // max pixel value
- Guchar *lookup; // lookup table
-};
-
-//------------------------------------------------------------------------
-// GfxSeparationColorSpace
-//------------------------------------------------------------------------
-
-class GfxSeparationColorSpace: public GfxColorSpace {
-public:
-
- GfxSeparationColorSpace(GString *nameA, GfxColorSpace *altA,
- Function *funcA);
- virtual ~GfxSeparationColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csSeparation; }
-
- // Construct a Separation color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 1; }
-
- // Separation-specific access.
- GString *getName() { return name; }
- GfxColorSpace *getAlt() { return alt; }
- Function *getFunc() { return func; }
-
-private:
-
- GString *name; // colorant name
- GfxColorSpace *alt; // alternate color space
- Function *func; // tint transform (into alternate color space)
-};
-
-//------------------------------------------------------------------------
-// GfxDeviceNColorSpace
-//------------------------------------------------------------------------
-
-class GfxDeviceNColorSpace: public GfxColorSpace {
-public:
-
- GfxDeviceNColorSpace(int nCompsA, GfxColorSpace *alt, Function *func);
- virtual ~GfxDeviceNColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csDeviceN; }
-
- // Construct a DeviceN color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return nComps; }
-
- // DeviceN-specific access.
- GString *getColorantName(int i) { return names[i]; }
- GfxColorSpace *getAlt() { return alt; }
- Function *getTintTransformFunc() { return func; }
-
-private:
-
- int nComps; // number of components
- GString // colorant names
- *names[gfxColorMaxComps];
- GfxColorSpace *alt; // alternate color space
- Function *func; // tint transform (into alternate color space)
-};
-
-//------------------------------------------------------------------------
-// GfxPatternColorSpace
-//------------------------------------------------------------------------
-
-class GfxPatternColorSpace: public GfxColorSpace {
-public:
-
- GfxPatternColorSpace(GfxColorSpace *underA);
- virtual ~GfxPatternColorSpace();
- virtual GfxColorSpace *copy();
- virtual GfxColorSpaceMode getMode() { return csPattern; }
-
- // Construct a Pattern color space. Returns NULL if unsuccessful.
- static GfxColorSpace *parse(Array *arr);
-
- virtual void getGray(GfxColor *color, double *gray);
- virtual void getRGB(GfxColor *color, GfxRGB *rgb);
- virtual void getCMYK(GfxColor *color, GfxCMYK *cmyk);
-
- virtual int getNComps() { return 0; }
-
- // Pattern-specific access.
- GfxColorSpace *getUnder() { return under; }
-
-private:
-
- GfxColorSpace *under; // underlying color space (for uncolored
- // patterns)
-};
-
-//------------------------------------------------------------------------
-// GfxPattern
-//------------------------------------------------------------------------
-
-class GfxPattern {
-public:
-
- GfxPattern(int typeA);
- virtual ~GfxPattern();
-
- static GfxPattern *parse(Object *obj);
-
- virtual GfxPattern *copy() = 0;
-
- int getType() { return type; }
-
-private:
-
- int type;
-};
-
-//------------------------------------------------------------------------
-// GfxTilingPattern
-//------------------------------------------------------------------------
-
-class GfxTilingPattern: public GfxPattern {
-public:
-
- static GfxTilingPattern *parse(Object *patObj);
- virtual ~GfxTilingPattern();
-
- virtual GfxPattern *copy();
-
- int getPaintType() { return paintType; }
- int getTilingType() { return tilingType; }
- double *getBBox() { return bbox; }
- double getXStep() { return xStep; }
- double getYStep() { return yStep; }
- Dict *getResDict()
- { return resDict.isDict() ? resDict.getDict() : (Dict *)NULL; }
- double *getMatrix() { return matrix; }
- Object *getContentStream() { return &contentStream; }
-
-private:
-
- GfxTilingPattern(int paintTypeA, int tilingTypeA,
- double *bboxA, double xStepA, double yStepA,
- Object *resDictA, double *matrixA,
- Object *contentStreamA);
-
- 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(Object *patObj);
- virtual ~GfxShadingPattern();
-
- virtual GfxPattern *copy();
-
- GfxShading *getShading() { return shading; }
- double *getMatrix() { return matrix; }
-
-private:
-
- GfxShadingPattern(GfxShading *shadingA, double *matrixA);
-
- GfxShading *shading;
- double matrix[6];
-};
-
-//------------------------------------------------------------------------
-// GfxShading
-//------------------------------------------------------------------------
-
-class GfxShading {
-public:
-
- GfxShading(int typeA);
- GfxShading(GfxShading *shading);
- virtual ~GfxShading();
-
- static GfxShading *parse(Object *obj);
-
- virtual GfxShading *copy() = 0;
-
- int getType() { return type; }
- GfxColorSpace *getColorSpace() { return colorSpace; }
- GfxColor *getBackground() { return &background; }
- GBool getHasBackground() { return hasBackground; }
- void getBBox(double *xMinA, double *yMinA, double *xMaxA, double *yMaxA)
- { *xMinA = xMin; *yMinA = yMin; *xMaxA = xMax; *yMaxA = yMax; }
- GBool getHasBBox() { return hasBBox; }
-
-protected:
-
- GBool init(Dict *dict);
-
- int type;
- GfxColorSpace *colorSpace;
- GfxColor background;
- GBool hasBackground;
- double xMin, yMin, xMax, yMax;
- GBool hasBBox;
-};
-
-//------------------------------------------------------------------------
-// GfxFunctionShading
-//------------------------------------------------------------------------
-
-class GfxFunctionShading: public GfxShading {
-public:
-
- GfxFunctionShading(double x0A, double y0A,
- double x1A, double y1A,
- double *matrixA,
- Function **funcsA, int nFuncsA);
- GfxFunctionShading(GfxFunctionShading *shading);
- virtual ~GfxFunctionShading();
-
- static GfxFunctionShading *parse(Dict *dict);
-
- virtual GfxShading *copy();
-
- void getDomain(double *x0A, double *y0A, double *x1A, double *y1A)
- { *x0A = x0; *y0A = y0; *x1A = x1; *y1A = y1; }
- double *getMatrix() { return matrix; }
- void getColor(double x, double y, GfxColor *color);
-
-private:
-
- double x0, y0, x1, y1;
- double matrix[6];
- Function *funcs[gfxColorMaxComps];
- int nFuncs;
-};
-
-//------------------------------------------------------------------------
-// GfxAxialShading
-//------------------------------------------------------------------------
-
-class GfxAxialShading: public GfxShading {
-public:
-
- GfxAxialShading(double x0A, double y0A,
- double x1A, double y1A,
- double t0A, double t1A,
- Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A);
- GfxAxialShading(GfxAxialShading *shading);
- virtual ~GfxAxialShading();
-
- static GfxAxialShading *parse(Dict *dict);
-
- virtual GfxShading *copy();
-
- void getCoords(double *x0A, double *y0A, double *x1A, double *y1A)
- { *x0A = x0; *y0A = y0; *x1A = x1; *y1A = y1; }
- double getDomain0() { return t0; }
- double getDomain1() { return t1; }
- void getColor(double t, GfxColor *color);
- GBool getExtend0() { return extend0; }
- GBool getExtend1() { return extend1; }
-
-private:
-
- double x0, y0, x1, y1;
- double t0, t1;
- Function *funcs[gfxColorMaxComps];
- int nFuncs;
- GBool extend0, extend1;
-};
-
-//------------------------------------------------------------------------
-// GfxRadialShading
-//------------------------------------------------------------------------
-
-class GfxRadialShading: public GfxShading {
-public:
-
- GfxRadialShading(double x0A, double y0A, double r0A,
- double x1A, double y1A, double r1A,
- double t0A, double t1A,
- Function **funcsA, int nFuncsA,
- GBool extend0A, GBool extend1A);
- GfxRadialShading(GfxRadialShading *shading);
- virtual ~GfxRadialShading();
-
- static GfxRadialShading *parse(Dict *dict);
-
- virtual GfxShading *copy();
-
- void getCoords(double *x0A, double *y0A, double *r0A,
- double *x1A, double *y1A, double *r1A)
- { *x0A = x0; *y0A = y0; *r0A = r0; *x1A = x1; *y1A = y1; *r1A = r1; }
- double getDomain0() { return t0; }
- double getDomain1() { return t1; }
- void getColor(double t, GfxColor *color);
- GBool getExtend0() { return extend0; }
- GBool getExtend1() { return extend1; }
-
-private:
-
- double x0, y0, r0, x1, y1, r1;
- double t0, t1;
- Function *funcs[gfxColorMaxComps];
- int nFuncs;
- GBool extend0, extend1;
-};
-
-//------------------------------------------------------------------------
-// GfxImageColorMap
-//------------------------------------------------------------------------
-
-class GfxImageColorMap {
-public:
-
- // Constructor.
- GfxImageColorMap(int bitsA, Object *decode, GfxColorSpace *colorSpaceA);
-
- // Destructor.
- ~GfxImageColorMap();
-
- // Return a copy of this color map.
- GfxImageColorMap *copy() { return new GfxImageColorMap(this); }
-
- // Is color map valid?
- GBool isOk() { return ok; }
-
- // Get the color space.
- GfxColorSpace *getColorSpace() { return colorSpace; }
-
- // Get stream decoding info.
- int getNumPixelComps() { return nComps; }
- int getBits() { return bits; }
-
- // Get decode table.
- double getDecodeLow(int i) { return decodeLow[i]; }
- double getDecodeHigh(int i) { return decodeLow[i] + decodeRange[i]; }
-
- // Convert an image pixel to a color.
- void getGray(Guchar *x, double *gray);
- void getRGB(Guchar *x, GfxRGB *rgb);
- void getCMYK(Guchar *x, GfxCMYK *cmyk);
- void getColor(Guchar *x, GfxColor *color);
-
-private:
-
- GfxImageColorMap(GfxImageColorMap *colorMap);
-
- 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
- double *lookup; // lookup table
- double // minimum values for each component
- decodeLow[gfxColorMaxComps];
- double // max - min value for each component
- decodeRange[gfxColorMaxComps];
- GBool ok;
-};
-
-//------------------------------------------------------------------------
-// GfxSubpath and GfxPath
-//------------------------------------------------------------------------
-
-class GfxSubpath {
-public:
-
- // Constructor.
- GfxSubpath(double x1, double y1);
-
- // Destructor.
- ~GfxSubpath();
-
- // Copy.
- GfxSubpath *copy() { return new GfxSubpath(this); }
-
- // Get points.
- int getNumPoints() { return n; }
- double getX(int i) { return x[i]; }
- double getY(int i) { return y[i]; }
- GBool getCurve(int i) { return curve[i]; }
-
- // Get last point.
- double getLastX() { return x[n-1]; }
- double getLastY() { 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();
- GBool isClosed() { return closed; }
-
- // Add (<dx>, <dy>) to each point in the subpath.
- void offset(double dx, double dy);
-
-private:
-
- double *x, *y; // points
- GBool *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
- GBool closed; // set if path is closed
-
- GfxSubpath(GfxSubpath *subpath);
-};
-
-class GfxPath {
-public:
-
- // Constructor.
- GfxPath();
-
- // Destructor.
- ~GfxPath();
-
- // Copy.
- GfxPath *copy()
- { return new GfxPath(justMoved, firstX, firstY, subpaths, n, size); }
-
- // Is there a current point?
- GBool isCurPt() { return n > 0 || justMoved; }
-
- // Is the path non-empty, i.e., is there at least one segment?
- GBool isPath() { return n > 0; }
-
- // Get subpaths.
- int getNumSubpaths() { return n; }
- GfxSubpath *getSubpath(int i) { return subpaths[i]; }
-
- // Get last point on last subpath.
- double getLastX() { return subpaths[n-1]->getLastX(); }
- double getLastY() { 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:
-
- GBool 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(GBool justMoved1, double firstX1, double firstY1,
- GfxSubpath **subpaths1, int n1, int size1);
-};
-
-//------------------------------------------------------------------------
-// GfxState
-//------------------------------------------------------------------------
-
-class GfxState {
-public:
-
- // Construct a default GfxState, for a device with resolution <hDPI>
- // x <vDPI>, page box <pageBox>, page rotation <rotate>, and
- // coordinate system specified by <upsideDown>.
- GfxState(double hDPI, double vDPI, PDFRectangle *pageBox,
- int rotate, GBool upsideDown);
-
- // Destructor.
- ~GfxState();
-
- // Copy.
- GfxState *copy() { return new GfxState(this); }
-
- // Accessors.
- double *getCTM() { return ctm; }
- double getX1() { return px1; }
- double getY1() { return py1; }
- double getX2() { return px2; }
- double getY2() { return py2; }
- double getPageWidth() { return pageWidth; }
- double getPageHeight() { return pageHeight; }
- GfxColor *getFillColor() { return &fillColor; }
- GfxColor *getStrokeColor() { return &strokeColor; }
- void getFillGray(double *gray)
- { fillColorSpace->getGray(&fillColor, gray); }
- void getStrokeGray(double *gray)
- { strokeColorSpace->getGray(&strokeColor, gray); }
- void getFillRGB(GfxRGB *rgb)
- { fillColorSpace->getRGB(&fillColor, rgb); }
- void getStrokeRGB(GfxRGB *rgb)
- { strokeColorSpace->getRGB(&strokeColor, rgb); }
- void getFillCMYK(GfxCMYK *cmyk)
- { fillColorSpace->getCMYK(&fillColor, cmyk); }
- void getStrokeCMYK(GfxCMYK *cmyk)
- { strokeColorSpace->getCMYK(&strokeColor, cmyk); }
- GfxColorSpace *getFillColorSpace() { return fillColorSpace; }
- GfxColorSpace *getStrokeColorSpace() { return strokeColorSpace; }
- GfxPattern *getFillPattern() { return fillPattern; }
- GfxPattern *getStrokePattern() { return strokePattern; }
- double getFillOpacity() { return fillOpacity; }
- double getStrokeOpacity() { return strokeOpacity; }
- double getLineWidth() { return lineWidth; }
- void getLineDash(double **dash, int *length, double *start)
- { *dash = lineDash; *length = lineDashLength; *start = lineDashStart; }
- int getFlatness() { return flatness; }
- int getLineJoin() { return lineJoin; }
- int getLineCap() { return lineCap; }
- double getMiterLimit() { return miterLimit; }
- GfxFont *getFont() { return font; }
- double getFontSize() { return fontSize; }
- double *getTextMat() { return textMat; }
- double getCharSpace() { return charSpace; }
- double getWordSpace() { return wordSpace; }
- double getHorizScaling() { return horizScaling; }
- double getLeading() { return leading; }
- double getRise() { return rise; }
- int getRender() { return render; }
- GfxPath *getPath() { return path; }
- void setPath(GfxPath *pathA);
- double getCurX() { return curX; }
- double getCurY() { return curY; }
- void getClipBBox(double *xMin, double *yMin, double *xMax, double *yMax)
- { *xMin = clipXMin; *yMin = clipYMin; *xMax = clipXMax; *yMax = clipYMax; }
- void getUserClipBBox(double *xMin, double *yMin, double *xMax, double *yMax);
- double getLineX() { return lineX; }
- double getLineY() { return lineY; }
-
- // Is there a current point/path?
- GBool isCurPt() { return path->isCurPt(); }
- GBool isPath() { return path->isPath(); }
-
- // Transforms.
- void transform(double x1, double y1, double *x2, double *y2)
- { *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)
- { *x2 = ctm[0] * x1 + ctm[2] * y1;
- *y2 = ctm[1] * x1 + ctm[3] * y1; }
- void textTransform(double x1, double y1, double *x2, double *y2)
- { *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)
- { *x2 = textMat[0] * x1 + textMat[2] * y1;
- *y2 = textMat[1] * x1 + textMat[3] * y1; }
- double transformWidth(double w);
- double getTransformedLineWidth()
- { return transformWidth(lineWidth); }
- double getTransformedFontSize();
- void getFontTransMat(double *m11, double *m12, double *m21, double *m22);
-
- // 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 setFillColorSpace(GfxColorSpace *colorSpace);
- void setStrokeColorSpace(GfxColorSpace *colorSpace);
- void setFillColor(GfxColor *color) { fillColor = *color; }
- void setStrokeColor(GfxColor *color) { strokeColor = *color; }
- void setFillPattern(GfxPattern *pattern);
- void setStrokePattern(GfxPattern *pattern);
- void setFillOpacity(double opac) { fillOpacity = opac; }
- void setStrokeOpacity(double opac) { strokeOpacity = opac; }
- void setLineWidth(double width) { lineWidth = width; }
- void setLineDash(double *dash, int length, double start);
- void setFlatness(int flatness1) { flatness = flatness1; }
- void setLineJoin(int lineJoin1) { lineJoin = lineJoin1; }
- void setLineCap(int lineCap1) { lineCap = lineCap1; }
- void setMiterLimit(double limit) { miterLimit = limit; }
- void setFont(GfxFont *fontA, double fontSizeA)
- { font = fontA; fontSize = 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; }
-
- // 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();
-
- // 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();
- GBool hasSaves() { return saved != NULL; }
-
-private:
-
- double ctm[6]; // coord transform matrix
- double px1, py1, px2, py2; // page corners (user coords)
- double pageWidth, pageHeight; // page size (pixels)
-
- GfxColorSpace *fillColorSpace; // fill color space
- GfxColorSpace *strokeColorSpace; // stroke color space
- GfxColor fillColor; // fill color
- GfxColor strokeColor; // stroke color
- GfxPattern *fillPattern; // fill pattern
- GfxPattern *strokePattern; // stroke pattern
- double fillOpacity; // fill opacity
- double strokeOpacity; // stroke opacity
-
- double lineWidth; // line width
- double *lineDash; // line dash
- int lineDashLength;
- double lineDashStart;
- int flatness; // curve flatness
- int lineJoin; // line join style
- int lineCap; // line cap style
- double miterLimit; // line miter limit
-
- 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;
-
- GfxState *saved; // next GfxState on stack
-
- GfxState(GfxState *state);
-};
-
-#endif
generated by cgit v0.9.1 at 2024-05-06 20:22:19 (GMT)