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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