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Diffstat (limited to 'xpdf/OutputDev.h')
| -rw-r--r-- | xpdf/OutputDev.h | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/xpdf/OutputDev.h b/xpdf/OutputDev.h new file mode 100644 index 0000000..54483cf --- /dev/null +++ b/xpdf/OutputDev.h @@ -0,0 +1,251 @@ +//======================================================================== +// +// OutputDev.h +// +// Copyright 1996-2003 Glyph & Cog, LLC +// +//======================================================================== + +#ifndef OUTPUTDEV_H +#define OUTPUTDEV_H + +#include <aconf.h> + +#ifdef USE_GCC_PRAGMAS +#pragma interface +#endif + +#include "gtypes.h" +#include "CharTypes.h" + +class GString; +class Gfx; +class GfxState; +struct GfxColor; +class GfxColorSpace; +class GfxImageColorMap; +class GfxShading; +class Stream; +class Links; +class Link; +class Catalog; +class Page; +class Function; + +//------------------------------------------------------------------------ +// OutputDev +//------------------------------------------------------------------------ + +class OutputDev { +public: + + // Constructor. + OutputDev() {} + + // Destructor. + virtual ~OutputDev() {} + + //----- get info about output device + + // Does this device use upside-down coordinates? + // (Upside-down means (0,0) is the top left corner of the page.) + virtual GBool upsideDown() = 0; + + // Does this device use drawChar() or drawString()? + virtual GBool useDrawChar() = 0; + + // Does this device use tilingPatternFill()? If this returns false, + // tiling pattern fills will be reduced to a series of other drawing + // operations. + virtual GBool useTilingPatternFill() { return gFalse; } + + // Does this device use drawForm()? If this returns false, + // form-type XObjects will be interpreted (i.e., unrolled). + virtual GBool useDrawForm() { return gFalse; } + + // Does this device use beginType3Char/endType3Char? Otherwise, + // text in Type 3 fonts will be drawn with drawChar/drawString. + virtual GBool interpretType3Chars() = 0; + + // Does this device need non-text content? + virtual GBool needNonText() { return gTrue; } + + // Does this device require incCharCount to be called for text on + // non-shown layers? + virtual GBool needCharCount() { return gFalse; } + + + + //----- initialization and control + + // Set default transform matrix. + virtual void setDefaultCTM(double *ctm); + + // Check to see if a page slice should be displayed. If this + // returns false, the page display is aborted. Typically, an + // OutputDev will use some alternate means to display the page + // before returning false. + virtual GBool checkPageSlice(Page *page, double hDPI, double vDPI, + int rotate, GBool useMediaBox, GBool crop, + int sliceX, int sliceY, int sliceW, int sliceH, + GBool printing, + GBool (*abortCheckCbk)(void *data) = NULL, + void *abortCheckCbkData = NULL) + { return gTrue; } + + // Start a page. + virtual void startPage(int pageNum, GfxState *state) {} + + // End a page. + virtual void endPage() {} + + //----- coordinate conversion + + // Convert between device and user coordinates. + virtual void cvtDevToUser(double dx, double dy, double *ux, double *uy); + virtual void cvtUserToDev(double ux, double uy, double *dx, double *dy); + virtual void cvtUserToDev(double ux, double uy, int *dx, int *dy); + + double *getDefCTM() { return defCTM; } + double *getDefICTM() { return defICTM; } + + //----- save/restore graphics state + virtual void saveState(GfxState *state) {} + virtual void restoreState(GfxState *state) {} + + //----- update graphics state + virtual void updateAll(GfxState *state); + virtual void updateCTM(GfxState *state, double m11, double m12, + double m21, double m22, double m31, double m32) {} + virtual void updateLineDash(GfxState *state) {} + virtual void updateFlatness(GfxState *state) {} + virtual void updateLineJoin(GfxState *state) {} + virtual void updateLineCap(GfxState *state) {} + virtual void updateMiterLimit(GfxState *state) {} + virtual void updateLineWidth(GfxState *state) {} + virtual void updateStrokeAdjust(GfxState *state) {} + virtual void updateFillColorSpace(GfxState *state) {} + virtual void updateStrokeColorSpace(GfxState *state) {} + virtual void updateFillColor(GfxState *state) {} + virtual void updateStrokeColor(GfxState *state) {} + virtual void updateBlendMode(GfxState *state) {} + virtual void updateFillOpacity(GfxState *state) {} + virtual void updateStrokeOpacity(GfxState *state) {} + virtual void updateFillOverprint(GfxState *state) {} + virtual void updateStrokeOverprint(GfxState *state) {} + virtual void updateOverprintMode(GfxState *state) {} + virtual void updateRenderingIntent(GfxState *state) {} + virtual void updateTransfer(GfxState *state) {} + + //----- update text state + virtual void updateFont(GfxState *state) {} + virtual void updateTextMat(GfxState *state) {} + virtual void updateCharSpace(GfxState *state) {} + virtual void updateRender(GfxState *state) {} + virtual void updateRise(GfxState *state) {} + virtual void updateWordSpace(GfxState *state) {} + virtual void updateHorizScaling(GfxState *state) {} + virtual void updateTextPos(GfxState *state) {} + virtual void updateTextShift(GfxState *state, double shift) {} + virtual void saveTextPos(GfxState *state) {} + virtual void restoreTextPos(GfxState *state) {} + + //----- path painting + virtual void stroke(GfxState *state) {} + virtual void fill(GfxState *state) {} + virtual void eoFill(GfxState *state) {} + virtual void tilingPatternFill(GfxState *state, Gfx *gfx, Object *strRef, + int paintType, int tilingType, Dict *resDict, + double *mat, double *bbox, + int x0, int y0, int x1, int y1, + double xStep, double yStep) {} + virtual GBool shadedFill(GfxState *state, GfxShading *shading) + { return gFalse; } + + //----- path clipping + virtual void clip(GfxState *state) {} + virtual void eoClip(GfxState *state) {} + virtual void clipToStrokePath(GfxState *state) {} + + //----- text drawing + virtual void beginStringOp(GfxState *state) {} + virtual void endStringOp(GfxState *state) {} + virtual void beginString(GfxState *state, GString *s) {} + virtual void endString(GfxState *state) {} + virtual void drawChar(GfxState *state, double x, double y, + double dx, double dy, + double originX, double originY, + CharCode code, int nBytes, Unicode *u, int uLen) {} + virtual void drawString(GfxState *state, GString *s) {} + virtual GBool beginType3Char(GfxState *state, double x, double y, + double dx, double dy, + CharCode code, Unicode *u, int uLen); + virtual void endType3Char(GfxState *state) {} + virtual void endTextObject(GfxState *state) {} + virtual void incCharCount(int nChars) {} + virtual void beginActualText(GfxState *state, Unicode *u, int uLen) {} + virtual void endActualText(GfxState *state) {} + + //----- image drawing + virtual void drawImageMask(GfxState *state, Object *ref, Stream *str, + int width, int height, GBool invert, + GBool inlineImg, GBool interpolate); + virtual void setSoftMaskFromImageMask(GfxState *state, + Object *ref, Stream *str, + int width, int height, GBool invert, + GBool inlineImg, GBool interpolate); + virtual void drawImage(GfxState *state, Object *ref, Stream *str, + int width, int height, GfxImageColorMap *colorMap, + int *maskColors, GBool inlineImg, GBool interpolate); + virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str, + int width, int height, + GfxImageColorMap *colorMap, + Object *maskRef, Stream *maskStr, + int maskWidth, int maskHeight, + GBool maskInvert, GBool interpolate); + virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str, + int width, int height, + GfxImageColorMap *colorMap, + Object *maskRef, Stream *maskStr, + int maskWidth, int maskHeight, + GfxImageColorMap *maskColorMap, + double *matte, GBool interpolate); + +#if OPI_SUPPORT + //----- OPI functions + virtual void opiBegin(GfxState *state, Dict *opiDict); + virtual void opiEnd(GfxState *state, Dict *opiDict); +#endif + + //----- Type 3 font operators + virtual void type3D0(GfxState *state, double wx, double wy) {} + virtual void type3D1(GfxState *state, double wx, double wy, + double llx, double lly, double urx, double ury) {} + + //----- form XObjects + virtual void drawForm(Ref id) {} + + //----- PostScript XObjects + virtual void psXObject(Stream *psStream, Stream *level1Stream) {} + + //----- transparency groups and soft masks + virtual GBool beginTransparencyGroup(GfxState *state, double *bbox, + GfxColorSpace *blendingColorSpace, + GBool isolated, GBool knockout, + GBool forSoftMask) { return gTrue; } + virtual void endTransparencyGroup(GfxState *state) {} + virtual void paintTransparencyGroup(GfxState *state, double *bbox) {} + virtual void setSoftMask(GfxState *state, double *bbox, GBool alpha, + Function *transferFunc, GfxColor *backdropColor) {} + virtual void clearSoftMask(GfxState *state) {} + + //----- links + virtual void processLink(Link *link) {} + +private: + + double defCTM[6]; // default coordinate transform matrix + double defICTM[6]; // inverse of default CTM +}; + +#endif |