gfxstate.h

swf文件查看工具,能够看flash文件的格式

  virtual GfxShading *copy();

  int getNPatches() { return nPatches; }
  GfxPatch *getPatch(int i) { return &patches[i]; }

private:

  GfxPatch *patches;
  int nPatches;
  Function *funcs[gfxColorMaxComps];
  int nFuncs;
};

//------------------------------------------------------------------------
// 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, GfxGray *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
  GfxColorComp *		// lookup table
    lookup[gfxColorMaxComps];
  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 <rotateA>, and
  // coordinate system specified by <upsideDown>.
  GfxState(double hDPIA, double vDPIA, PDFRectangle *pageBox,
	   int rotateA, GBool upsideDown);

  // Destructor.
  ~GfxState();

  // Copy.
  GfxState *copy() { return new GfxState(this); }

  // Accessors.
  double getHDPI() { return hDPI; }
  double getVDPI() { return vDPI; }
  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; }
  int getRotate() { return rotate; }
  GfxColor *getFillColor() { return &fillColor; }
  GfxColor *getStrokeColor() { return &strokeColor; }
  void getFillGray(GfxGray *gray)
    { fillColorSpace->getGray(&fillColor, gray); }
  void getStrokeGray(GfxGray *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; }
  GfxBlendMode getBlendMode() { return blendMode; }
  double getFillOpacity() { return fillOpacity; }
  double getStrokeOpacity() { return strokeOpacity; }
  GBool getFillOverprint() { return fillOverprint; }
  GBool getStrokeOverprint() { return strokeOverprint; }
  Function **getTransfer() { return transfer; }
  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; }
  GBool getStrokeAdjust() { return strokeAdjust; }
  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 shiftCTM(double tx, double ty);
  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 setBlendMode(GfxBlendMode mode) { blendMode = mode; }
  void setFillOpacity(double opac) { fillOpacity = opac; }
  void setStrokeOpacity(double opac) { strokeOpacity = opac; }
  void setFillOverprint(GBool op) { fillOverprint = op; }
  void setStrokeOverprint(GBool op) { strokeOverprint = op; }
  void setTransfer(Function **funcs);
  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 setStrokeAdjust(GBool sa) { strokeAdjust = sa; }
  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();
  void clipToStrokePath();

  // 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; }

  // Misc
  GBool parseBlendMode(Object *obj, GfxBlendMode *mode);

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

  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
  GfxBlendMode blendMode;	// transparency blend mode
  double fillOpacity;		// fill opacity
  double strokeOpacity;		// stroke opacity
  GBool fillOverprint;		// fill overprint
  GBool strokeOverprint;	// stroke overprint
  Function *transfer[4];	// transfer function (entries may be: all
				//   NULL = identity; last three NULL =
				//   single function; all four non-NULL =
				//   R,G,B,gray functions)

  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
  GBool strokeAdjust;		// stroke adjustment

  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