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Diffstat (limited to 'Build/source/libs/xpdf/xpdf-src/splash/Splash.h')
-rw-r--r-- | Build/source/libs/xpdf/xpdf-src/splash/Splash.h | 422 |
1 files changed, 422 insertions, 0 deletions
diff --git a/Build/source/libs/xpdf/xpdf-src/splash/Splash.h b/Build/source/libs/xpdf/xpdf-src/splash/Splash.h new file mode 100644 index 00000000000..7409e0cd6b4 --- /dev/null +++ b/Build/source/libs/xpdf/xpdf-src/splash/Splash.h @@ -0,0 +1,422 @@ +//======================================================================== +// +// Splash.h +// +// Copyright 2003-2013 Glyph & Cog, LLC +// +//======================================================================== + +#ifndef SPLASH_H +#define SPLASH_H + +#include <aconf.h> + +#ifdef USE_GCC_PRAGMAS +#pragma interface +#endif + +#include "SplashTypes.h" +#include "SplashClip.h" + +class Splash; +class SplashBitmap; +struct SplashGlyphBitmap; +class SplashState; +class SplashPattern; +class SplashScreen; +class SplashPath; +class SplashXPath; +class SplashFont; +struct SplashPipe; + +//------------------------------------------------------------------------ + +// Retrieves the next line of pixels in an image mask. Normally, +// fills in *<line> and returns true. If the image stream is +// exhausted, returns false. +typedef GBool (*SplashImageMaskSource)(void *data, SplashColorPtr pixel); + +// Retrieves the next line of pixels in an image. Normally, fills in +// *<line> and returns true. If the image stream is exhausted, +// returns false. +typedef GBool (*SplashImageSource)(void *data, SplashColorPtr colorLine, + Guchar *alphaLine); + +//------------------------------------------------------------------------ + +enum SplashPipeResultColorCtrl { + splashPipeResultColorNoAlphaBlendMono, + splashPipeResultColorNoAlphaBlendRGB, +#if SPLASH_CMYK + splashPipeResultColorNoAlphaBlendCMYK, +#endif + splashPipeResultColorAlphaNoBlendMono, + splashPipeResultColorAlphaNoBlendRGB, +#if SPLASH_CMYK + splashPipeResultColorAlphaNoBlendCMYK, +#endif + splashPipeResultColorAlphaBlendMono, + splashPipeResultColorAlphaBlendRGB +#if SPLASH_CMYK + , + splashPipeResultColorAlphaBlendCMYK +#endif +}; + +//------------------------------------------------------------------------ +// Splash +//------------------------------------------------------------------------ + +class Splash { +public: + + // Create a new rasterizer object. + Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA, + SplashScreenParams *screenParams = NULL); + Splash(SplashBitmap *bitmapA, GBool vectorAntialiasA, + SplashScreen *screenA); + + ~Splash(); + + //----- state read + + SplashCoord *getMatrix(); + SplashPattern *getStrokePattern(); + SplashPattern *getFillPattern(); + SplashScreen *getScreen(); + SplashBlendFunc getBlendFunc(); + SplashCoord getStrokeAlpha(); + SplashCoord getFillAlpha(); + SplashCoord getLineWidth(); + int getLineCap(); + int getLineJoin(); + SplashCoord getMiterLimit(); + SplashCoord getFlatness(); + SplashCoord *getLineDash(); + int getLineDashLength(); + SplashCoord getLineDashPhase(); + GBool getStrokeAdjust(); + SplashClip *getClip(); + SplashBitmap *getSoftMask(); + GBool getInNonIsolatedGroup(); + GBool getInKnockoutGroup(); + + //----- state write + + void setMatrix(SplashCoord *matrix); + void setStrokePattern(SplashPattern *strokeColor); + void setFillPattern(SplashPattern *fillColor); + void setScreen(SplashScreen *screen); + void setBlendFunc(SplashBlendFunc func); + void setStrokeAlpha(SplashCoord alpha); + void setFillAlpha(SplashCoord alpha); + void setLineWidth(SplashCoord lineWidth); + void setLineCap(int lineCap); + void setLineJoin(int lineJoin); + void setMiterLimit(SplashCoord miterLimit); + void setFlatness(SplashCoord flatness); + // the <lineDash> array will be copied + void setLineDash(SplashCoord *lineDash, int lineDashLength, + SplashCoord lineDashPhase); + void setStrokeAdjust(GBool strokeAdjust); + // NB: uses transformed coordinates. + void clipResetToRect(SplashCoord x0, SplashCoord y0, + SplashCoord x1, SplashCoord y1); + // NB: uses transformed coordinates. + SplashError clipToRect(SplashCoord x0, SplashCoord y0, + SplashCoord x1, SplashCoord y1); + // NB: uses untransformed coordinates. + SplashError clipToPath(SplashPath *path, GBool eo); + void setSoftMask(SplashBitmap *softMask); + void setInTransparencyGroup(SplashBitmap *groupBackBitmapA, + int groupBackXA, int groupBackYA, + GBool nonIsolated, GBool knockout); + void setTransfer(Guchar *red, Guchar *green, Guchar *blue, Guchar *gray); + void setOverprintMask(Guint overprintMask); + + //----- state save/restore + + void saveState(); + SplashError restoreState(); + + //----- drawing operations + + // Fill the bitmap with <color>. This is not subject to clipping. + void clear(SplashColorPtr color, Guchar alpha = 0x00); + + // Stroke a path using the current stroke pattern. + SplashError stroke(SplashPath *path); + + // Fill a path using the current fill pattern. + SplashError fill(SplashPath *path, GBool eo); + + // Fill a path, XORing with the current fill pattern. + SplashError xorFill(SplashPath *path, GBool eo); + + // Draw a character, using the current fill pattern. + SplashError fillChar(SplashCoord x, SplashCoord y, int c, SplashFont *font); + + // Draw a glyph, using the current fill pattern. This function does + // not free any data, i.e., it ignores glyph->freeData. + SplashError fillGlyph(SplashCoord x, SplashCoord y, + SplashGlyphBitmap *glyph); + + // Draws an image mask using the fill color. This will read <h> + // lines of <w> pixels from <src>, starting with the top line. "1" + // pixels will be drawn with the current fill color; "0" pixels are + // transparent. The matrix: + // [ mat[0] mat[1] 0 ] + // [ mat[2] mat[3] 0 ] + // [ mat[4] mat[5] 1 ] + // maps a unit square to the desired destination for the image, in + // PostScript style: + // [x' y' 1] = [x y 1] * mat + // Note that the Splash y axis points downward, and the image source + // is assumed to produce pixels in raster order, starting from the + // top line. + SplashError fillImageMask(SplashImageMaskSource src, void *srcData, + int w, int h, SplashCoord *mat, + GBool glyphMode, GBool interpolate); + + // Draw an image. This will read <h> lines of <w> pixels from + // <src>, starting with the top line. These pixels are assumed to + // be in the source mode, <srcMode>. If <srcAlpha> is true, the + // alpha values returned by <src> are used; otherwise they are + // ignored. The following combinations of source and target modes + // are supported: + // source target + // ------ ------ + // Mono8 Mono1 -- with dithering + // Mono8 Mono8 + // RGB8 RGB8 + // BGR8 RGB8 + // CMYK8 CMYK8 + // The matrix behaves as for fillImageMask. + SplashError drawImage(SplashImageSource src, void *srcData, + SplashColorMode srcMode, GBool srcAlpha, + int w, int h, SplashCoord *mat, + GBool interpolate); + + // Composite a rectangular region from <src> onto this Splash + // object. + SplashError composite(SplashBitmap *src, int xSrc, int ySrc, + int xDest, int yDest, int w, int h, + GBool noClip, GBool nonIsolated); + + // Composite this Splash object onto a background color. The + // background alpha is assumed to be 1. + void compositeBackground(SplashColorPtr color); + + // Copy a rectangular region from <src> onto the bitmap belonging to + // this Splash object. The destination alpha values are all set to + // zero. + SplashError blitTransparent(SplashBitmap *src, int xSrc, int ySrc, + int xDest, int yDest, int w, int h); + + //----- misc + + // Construct a path for a stroke, given the path to be stroked and + // the line width <w>. All other stroke parameters are taken from + // the current state. If <flatten> is true, this function will + // first flatten the path and handle the linedash. + SplashPath *makeStrokePath(SplashPath *path, SplashCoord w, + GBool flatten = gTrue); + + // Return the associated bitmap. + SplashBitmap *getBitmap() { return bitmap; } + + // Set the minimum line width. + void setMinLineWidth(SplashCoord w) { minLineWidth = w; } + + // Get a bounding box which includes all modifications since the + // last call to clearModRegion. + void getModRegion(int *xMin, int *yMin, int *xMax, int *yMax) + { *xMin = modXMin; *yMin = modYMin; *xMax = modXMax; *yMax = modYMax; } + + // Clear the modified region bounding box. + void clearModRegion(); + + // Get clipping status for the last drawing operation subject to + // clipping. + SplashClipResult getClipRes() { return opClipRes; } + + // Toggle debug mode on or off. + void setDebugMode(GBool debugModeA) { debugMode = debugModeA; } + +#if 1 //~tmp: turn off anti-aliasing temporarily + void setInShading(GBool sh) { inShading = sh; } +#endif + +private: + + void pipeInit(SplashPipe *pipe, SplashPattern *pattern, + Guchar aInput, GBool usesShape, + GBool nonIsolatedGroup); + void pipeRun(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunSimpleMono1(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunSimpleMono8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunSimpleRGB8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunSimpleBGR8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#if SPLASH_CMYK + void pipeRunSimpleCMYK8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#endif + void pipeRunShapeMono1(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunShapeMono8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunShapeRGB8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunShapeBGR8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#if SPLASH_CMYK + void pipeRunShapeCMYK8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#endif + void pipeRunAAMono1(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunAAMono8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunAARGB8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); + void pipeRunAABGR8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#if SPLASH_CMYK + void pipeRunAACMYK8(SplashPipe *pipe, int x0, int x1, int y, + Guchar *shapePtr, SplashColorPtr cSrcPtr); +#endif + void transform(SplashCoord *matrix, SplashCoord xi, SplashCoord yi, + SplashCoord *xo, SplashCoord *yo); + void updateModX(int x); + void updateModY(int y); + void strokeNarrow(SplashPath *path); + void drawStrokeSpan(SplashPipe *pipe, int x0, int x1, int y, GBool noClip); + void strokeWide(SplashPath *path, SplashCoord w); + SplashPath *flattenPath(SplashPath *path, SplashCoord *matrix, + SplashCoord flatness); + void flattenCurve(SplashCoord x0, SplashCoord y0, + SplashCoord x1, SplashCoord y1, + SplashCoord x2, SplashCoord y2, + SplashCoord x3, SplashCoord y3, + SplashCoord *matrix, SplashCoord flatness2, + SplashPath *fPath); + SplashPath *makeDashedPath(SplashPath *xPath); + SplashError fillWithPattern(SplashPath *path, GBool eo, + SplashPattern *pattern, SplashCoord alpha); + SplashPath *tweakFillPath(SplashPath *path); + GBool pathAllOutside(SplashPath *path); + SplashError fillGlyph2(int x0, int y0, SplashGlyphBitmap *glyph); + void getImageBounds(SplashCoord xyMin, SplashCoord xyMax, + int *xyMinI, int *xyMaxI); + void upscaleMask(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + SplashCoord *mat, GBool glyphMode, + GBool interpolate); + void arbitraryTransformMask(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + SplashCoord *mat, GBool glyphMode, + GBool interpolate); + SplashBitmap *scaleMask(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + GBool interpolate); + void scaleMaskYdXd(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleMaskYdXu(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleMaskYuXd(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleMaskYuXu(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleMaskYuXuI(SplashImageMaskSource src, void *srcData, + int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void blitMask(SplashBitmap *src, int xDest, int yDest, + SplashClipResult clipRes); + void upscaleImage(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + SplashCoord *mat, GBool interpolate); + void arbitraryTransformImage(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, + int srcWidth, int srcHeight, + SplashCoord *mat, GBool interpolate); + SplashBitmap *scaleImage(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + GBool interpolate); + void scaleImageYdXd(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleImageYdXu(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleImageYuXd(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleImageYuXu(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void scaleImageYuXuI(SplashImageSource src, void *srcData, + SplashColorMode srcMode, int nComps, + GBool srcAlpha, int srcWidth, int srcHeight, + int scaledWidth, int scaledHeight, + SplashBitmap *dest); + void vertFlipImage(SplashBitmap *img, int width, int height, + int nComps); + void horizFlipImage(SplashBitmap *img, int width, int height, + int nComps); + void blitImage(SplashBitmap *src, GBool srcAlpha, int xDest, int yDest, + SplashClipResult clipRes); + void blitImageClipped(SplashBitmap *src, GBool srcAlpha, + int xSrc, int ySrc, int xDest, int yDest, + int w, int h); + void dumpPath(SplashPath *path); + void dumpXPath(SplashXPath *path); + + static SplashPipeResultColorCtrl pipeResultColorNoAlphaBlend[]; + static SplashPipeResultColorCtrl pipeResultColorAlphaNoBlend[]; + static SplashPipeResultColorCtrl pipeResultColorAlphaBlend[]; + static int pipeNonIsoGroupCorrection[]; + + SplashBitmap *bitmap; + int bitmapComps; + SplashState *state; + Guchar *scanBuf; + SplashBitmap // for transparency groups, this is the bitmap + *groupBackBitmap; // containing the alpha0/color0 values + int groupBackX, groupBackY; // offset within groupBackBitmap + Guchar aaGamma[256]; + SplashCoord minLineWidth; + int modXMin, modYMin, modXMax, modYMax; + SplashClipResult opClipRes; + GBool vectorAntialias; + GBool inShading; + GBool debugMode; +}; + +#endif |