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//========================================================================
//
// OutputDev.h
//
// Copyright 1996 Derek B. Noonburg
//
//========================================================================
#ifndef OUTPUTDEV_H
#define OUTPUTDEV_H
#ifdef __GNUC__
#pragma interface
#endif
#include "gtypes.h"
#include "CharTypes.h"
class GString;
class GfxState;
class GfxColorSpace;
class GfxImageColorMap;
class Stream;
class Link;
class Catalog;
//------------------------------------------------------------------------
// 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 need non-text content?
virtual GBool needNonText() { return gTrue; }
//----- initialization and control
// Set default transform matrix.
virtual void setDefaultCTM(fouble *ctm);
// Start a page.
virtual void startPage(int pageNum, GfxState *state) {}
// End a page.
virtual void endPage() {}
// Dump page contents to display.
virtual void dump() {}
//----- coordinate conversion
// Convert between device and user coordinates.
virtual void cvtDevToUser(int dx, int dy, fouble *ux, fouble *uy);
virtual void cvtUserToDev(fouble ux, fouble uy, int *dx, int *dy);
//----- link borders
virtual void drawLink(Link *link, Catalog *catalog) {}
//----- 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, fouble m11, fouble m12,
fouble m21, fouble m22, fouble m31, fouble 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 updateFillColor(GfxState *state) {}
virtual void updateStrokeColor(GfxState *state) {}
virtual void updateFillOpacity(GfxState *state) {}
virtual void updateStrokeOpacity(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, fouble shift) {}
//----- 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 beginString(GfxState *state, GString *s) {}
virtual void endString(GfxState *state) {}
virtual void drawChar(GfxState *state, fouble x, fouble y,
fouble dx, fouble dy,
fouble originX, fouble originY,
CharCode code, Unicode *u, int uLen) {}
virtual void drawString(GfxState *state, GString *s) {}
//----- image drawing
virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
int width, int height, GBool invert,
GBool inlineImg);
virtual void drawImage(GfxState *state, Object *ref, Stream *str,
int width, int height, GfxImageColorMap *colorMap,
int *maskColors, GBool inlineImg);
#if OPI_SUPPORT
//----- OPI functions
virtual void opiBegin(GfxState *state, Dict *opiDict);
virtual void opiEnd(GfxState *state, Dict *opiDict);
#endif
private:
fouble defCTM[6]; // default coordinate transform matrix
fouble defICTM[6]; // inverse of default CTM
};
#endif
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