| //======================================================================== |
| // |
| // PreScanOutputDev.h |
| // |
| // Copyright 2005 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) 2009 Carlos Garcia Campos <carlosgc@gnome.org> |
| // Copyright (C) 2010 Albert Astals Cid <aacid@kde.org> |
| // Copyright (C) 2011 William Bader <williambader@hotmail.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 PRESCANOUTPUTDEV_H |
| #define PRESCANOUTPUTDEV_H |
| |
| #ifdef USE_GCC_PRAGMAS |
| #pragma interface |
| #endif |
| |
| #include "goo/gtypes.h" |
| #include "GfxState.h" |
| #include "OutputDev.h" |
| |
| //------------------------------------------------------------------------ |
| // PreScanOutputDev |
| //------------------------------------------------------------------------ |
| |
| class PreScanOutputDev: public OutputDev { |
| public: |
| |
| // Constructor. |
| PreScanOutputDev(); |
| |
| // Destructor. |
| virtual ~PreScanOutputDev(); |
| |
| //----- 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() { return gTrue; } |
| |
| // Does this device use drawChar() or drawString()? |
| virtual GBool useDrawChar() { return gTrue; } |
| |
| // Does this device use beginType3Char/endType3Char? Otherwise, |
| // text in Type 3 fonts will be drawn with drawChar/drawString. |
| virtual GBool interpretType3Chars() { return gTrue; } |
| |
| //----- initialization and control |
| |
| // Start a page. |
| virtual void startPage(int pageNum, GfxState *state); |
| |
| // End a page. |
| virtual void endPage(); |
| |
| //----- path painting |
| virtual void stroke(GfxState *state); |
| virtual void fill(GfxState *state); |
| virtual void eoFill(GfxState *state); |
| |
| //----- path clipping |
| virtual void clip(GfxState *state); |
| virtual void eoClip(GfxState *state); |
| |
| //----- text drawing |
| virtual void beginStringOp(GfxState *state); |
| virtual void endStringOp(GfxState *state); |
| virtual GBool beginType3Char(GfxState *state, double x, double y, |
| double dx, double dy, |
| CharCode code, Unicode *u, int uLen); |
| virtual void endType3Char(GfxState *state); |
| |
| //----- image drawing |
| virtual void drawImageMask(GfxState *state, Object *ref, Stream *str, |
| int width, int height, GBool invert, |
| GBool interpolate, GBool inlineImg); |
| virtual void drawImage(GfxState *state, Object *ref, Stream *str, |
| int width, int height, GfxImageColorMap *colorMap, |
| GBool interpolate, int *maskColors, GBool inlineImg); |
| virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str, |
| int width, int height, |
| GfxImageColorMap *colorMap, |
| GBool interpolate, |
| Stream *maskStr, int maskWidth, int maskHeight, |
| GBool maskInvert, GBool maskInterpolate); |
| virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str, |
| int width, int height, |
| GfxImageColorMap *colorMap, |
| GBool interpolate, |
| Stream *maskStr, |
| int maskWidth, int maskHeight, |
| GfxImageColorMap *maskColorMap, |
| GBool maskInterpolate); |
| |
| //----- transparency groups and soft masks |
| virtual void beginTransparencyGroup(GfxState *state, double *bbox, |
| GfxColorSpace *blendingColorSpace, |
| GBool isolated, GBool knockout, |
| GBool forSoftMask); |
| virtual void paintTransparencyGroup(GfxState *state, double *bbox); |
| virtual void setSoftMask(GfxState *state, double *bbox, GBool alpha, |
| Function *transferFunc, GfxColor *backdropColor); |
| |
| //----- special access |
| |
| // Returns true if the operations performed since the last call to |
| // clearStats() are all monochrome (black or white). |
| GBool isMonochrome() { return mono; } |
| |
| // Returns true if the operations performed since the last call to |
| // clearStats() are all gray. |
| GBool isGray() { return gray; } |
| |
| // Returns true if the operations performed since the last call to |
| // clearStats() included any transparency. |
| GBool usesTransparency() { return transparency; } |
| |
| // Returns true if the operations performed since the last call to |
| // clearStats() are all rasterizable by GDI calls in GDIOutputDev. |
| GBool isAllGDI() { return gdi; } |
| |
| // Returns true if the operations performed since the last call to |
| // clearStats() processed a feature that PSOutputDev does not implement. |
| GBool hasLevel1PSBug() { return level1PSBug; } |
| |
| // Clear the stats used by the above functions. |
| void clearStats(); |
| |
| private: |
| |
| void check(GfxColorSpace *colorSpace, GfxColor *color, |
| double opacity, GfxBlendMode blendMode); |
| |
| GBool mono; |
| GBool gray; |
| GBool transparency; |
| GBool gdi; |
| PSLevel level; // PostScript level (1, 2, separation) |
| GBool level1PSBug; // gTrue if it uses a feature not supported in PSOutputDev |
| }; |
| |
| #endif |