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248 lines
7.8 KiB
248 lines
7.8 KiB
//========================================================================
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//
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// SplashOutputDev.h
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//
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// Copyright 2003 Glyph & Cog, LLC
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//
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//========================================================================
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#ifndef SPLASHOUTPUTDEV_H
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#define SPLASHOUTPUTDEV_H
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#include <aconf.h>
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#ifdef USE_GCC_PRAGMAS
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#pragma interface
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#endif
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#include "gtypes.h"
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#include "SplashTypes.h"
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#include "config.h"
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#include "OutputDev.h"
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#include "GfxState.h"
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class Gfx8BitFont;
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class SplashBitmap;
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class Splash;
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class SplashPath;
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class SplashPattern;
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class SplashFontEngine;
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class SplashFont;
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class T3FontCache;
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struct T3FontCacheTag;
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struct T3GlyphStack;
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struct SplashTransparencyGroup;
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//------------------------------------------------------------------------
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// number of Type 3 fonts to cache
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#define splashOutT3FontCacheSize 8
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//------------------------------------------------------------------------
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// SplashOutputDev
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//------------------------------------------------------------------------
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class SplashOutputDev: public OutputDev {
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public:
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// Constructor.
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SplashOutputDev(SplashColorMode colorModeA, int bitmapRowPadA,
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GBool reverseVideoA, SplashColorPtr paperColorA,
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GBool bitmapTopDownA = gTrue,
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GBool allowAntialiasA = gTrue);
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// Destructor.
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virtual ~SplashOutputDev();
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//----- get info about output device
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// Does this device use upside-down coordinates?
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// (Upside-down means (0,0) is the top left corner of the page.)
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virtual GBool upsideDown() { return gTrue; }
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// Does this device use drawChar() or drawString()?
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virtual GBool useDrawChar() { return gTrue; }
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// Does this device use beginType3Char/endType3Char? Otherwise,
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// text in Type 3 fonts will be drawn with drawChar/drawString.
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virtual GBool interpretType3Chars() { return gTrue; }
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//----- initialization and control
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// Start a page.
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virtual void startPage(int pageNum, GfxState *state);
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// End a page.
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virtual void endPage();
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//----- save/restore graphics state
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virtual void saveState(GfxState *state);
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virtual void restoreState(GfxState *state);
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//----- update graphics state
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virtual void updateAll(GfxState *state);
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virtual void updateCTM(GfxState *state, double m11, double m12,
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double m21, double m22, double m31, double m32);
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virtual void updateLineDash(GfxState *state);
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virtual void updateFlatness(GfxState *state);
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virtual void updateLineJoin(GfxState *state);
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virtual void updateLineCap(GfxState *state);
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virtual void updateMiterLimit(GfxState *state);
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virtual void updateLineWidth(GfxState *state);
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virtual void updateStrokeAdjust(GfxState *state);
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virtual void updateFillColor(GfxState *state);
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virtual void updateStrokeColor(GfxState *state);
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virtual void updateBlendMode(GfxState *state);
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virtual void updateFillOpacity(GfxState *state);
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virtual void updateStrokeOpacity(GfxState *state);
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//----- update text state
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virtual void updateFont(GfxState *state);
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//----- path painting
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virtual void stroke(GfxState *state);
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virtual void fill(GfxState *state);
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virtual void eoFill(GfxState *state);
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//----- path clipping
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virtual void clip(GfxState *state);
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virtual void eoClip(GfxState *state);
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virtual void clipToStrokePath(GfxState *state);
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//----- text drawing
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virtual void drawChar(GfxState *state, double x, double y,
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double dx, double dy,
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double originX, double originY,
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CharCode code, int nBytes, Unicode *u, int uLen);
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virtual GBool beginType3Char(GfxState *state, double x, double y,
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double dx, double dy,
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CharCode code, Unicode *u, int uLen);
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virtual void endType3Char(GfxState *state);
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virtual void endTextObject(GfxState *state);
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//----- image drawing
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virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
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int width, int height, GBool invert,
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GBool inlineImg);
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virtual void drawImage(GfxState *state, Object *ref, Stream *str,
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int width, int height, GfxImageColorMap *colorMap,
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int *maskColors, GBool inlineImg);
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virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str,
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int width, int height,
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GfxImageColorMap *colorMap,
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Stream *maskStr, int maskWidth, int maskHeight,
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GBool maskInvert);
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virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
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int width, int height,
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GfxImageColorMap *colorMap,
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Stream *maskStr,
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int maskWidth, int maskHeight,
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GfxImageColorMap *maskColorMap);
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//----- Type 3 font operators
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virtual void type3D0(GfxState *state, double wx, double wy);
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virtual void type3D1(GfxState *state, double wx, double wy,
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double llx, double lly, double urx, double ury);
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//----- transparency groups and soft masks
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virtual void beginTransparencyGroup(GfxState *state, double *bbox,
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GfxColorSpace *blendingColorSpace,
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GBool isolated, GBool knockout,
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GBool forSoftMask);
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virtual void endTransparencyGroup(GfxState *state);
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virtual void paintTransparencyGroup(GfxState *state, double *bbox);
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virtual void setSoftMask(GfxState *state, double *bbox, GBool alpha,
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Function *transferFunc, GfxColor *backdropColor);
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virtual void clearSoftMask(GfxState *state);
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//----- special access
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// Called to indicate that a new PDF document has been loaded.
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void startDoc(XRef *xrefA);
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void setPaperColor(SplashColorPtr paperColorA);
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GBool isReverseVideo() { return reverseVideo; }
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void setReverseVideo(GBool reverseVideoA) { reverseVideo = reverseVideoA; }
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// Get the bitmap and its size.
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SplashBitmap *getBitmap() { return bitmap; }
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int getBitmapWidth();
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int getBitmapHeight();
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// Returns the last rasterized bitmap, transferring ownership to the
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// caller.
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SplashBitmap *takeBitmap();
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// Get the Splash object.
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Splash *getSplash() { return splash; }
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// Get the modified region.
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void getModRegion(int *xMin, int *yMin, int *xMax, int *yMax);
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// Clear the modified region.
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void clearModRegion();
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// Set the Splash fill color.
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void setFillColor(int r, int g, int b);
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// Get a font object for a Base-14 font, using the Latin-1 encoding.
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SplashFont *getFont(GString *name, double *textMatA);
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SplashFont *getCurrentFont() { return font; }
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#if 1 //~tmp: turn off anti-aliasing temporarily
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virtual GBool getVectorAntialias();
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virtual void setVectorAntialias(GBool vaa);
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#endif
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private:
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void setupScreenParams(double hDPI, double vDPI);
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#if SPLASH_CMYK
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SplashPattern *getColor(GfxGray gray, GfxRGB *rgb, GfxCMYK *cmyk);
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#else
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SplashPattern *getColor(GfxGray gray, GfxRGB *rgb);
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#endif
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SplashPath *convertPath(GfxState *state, GfxPath *path);
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void doUpdateFont(GfxState *state);
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void drawType3Glyph(T3FontCache *t3Font,
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T3FontCacheTag *tag, Guchar *data);
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static GBool imageMaskSrc(void *data, SplashColorPtr line);
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static GBool imageSrc(void *data, SplashColorPtr colorLine,
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Guchar *alphaLine);
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static GBool alphaImageSrc(void *data, SplashColorPtr line,
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Guchar *alphaLine);
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static GBool maskedImageSrc(void *data, SplashColorPtr line,
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Guchar *alphaLine);
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SplashColorMode colorMode;
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int bitmapRowPad;
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GBool bitmapTopDown;
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GBool allowAntialias;
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GBool vectorAntialias;
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GBool reverseVideo; // reverse video mode
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SplashColor paperColor; // paper color
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SplashScreenParams screenParams;
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XRef *xref; // xref table for current document
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SplashBitmap *bitmap;
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Splash *splash;
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SplashFontEngine *fontEngine;
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T3FontCache * // Type 3 font cache
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t3FontCache[splashOutT3FontCacheSize];
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int nT3Fonts; // number of valid entries in t3FontCache
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T3GlyphStack *t3GlyphStack; // Type 3 glyph context stack
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SplashFont *font; // current font
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GBool needFontUpdate; // set when the font needs to be updated
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SplashPath *textClipPath; // clipping path built with text object
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SplashTransparencyGroup * // transparency group stack
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transpGroupStack;
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};
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#endif
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