pdf2swf/xpdf/OutputDev.h

   1 //========================================================================
   2 //
   3 // OutputDev.h
   4 //
   5 // Copyright 1996-2002 Glyph & Cog, LLC
   6 //
   7 //========================================================================
   8
   9 #ifndef OUTPUTDEV_H
  10 #define OUTPUTDEV_H
  11
  12 #ifdef __GNUC__
  13 #pragma interface
  14 #endif
  15
  16 #include "gtypes.h"
  17 #include "CharTypes.h"
  18
  19 class GString;
  20 class GfxState;
  21 class GfxColorSpace;
  22 class GfxImageColorMap;
  23 class Stream;
  24 class Link;
  25 class Catalog;
  26
  27 //------------------------------------------------------------------------
  28 // OutputDev
  29 //------------------------------------------------------------------------
  30
  31 class OutputDev {
  32 public:
  33
  34   // Constructor.
  35   OutputDev() {}
  36
  37   // Destructor.
  38   virtual ~OutputDev() {}
  39
  40   //----- get info about output device
  41
  42   // Does this device use upside-down coordinates?
  43   // (Upside-down means (0,0) is the top left corner of the page.)
  44   virtual GBool upsideDown() = 0;
  45
  46   // Does this device use drawChar() or drawString()?
  47   virtual GBool useDrawChar() = 0;
  48
  49   // Does this device use beginType3Char/endType3Char?  Otherwise,
  50   // text in Type 3 fonts will be drawn with drawChar/drawString.
  51   virtual GBool interpretType3Chars() = 0;
  52
  53   // Does this device need non-text content?
  54   virtual GBool needNonText() { return gTrue; }
  55
  56   //----- initialization and control
  57
  58   // Set default transform matrix.
  59   virtual void setDefaultCTM(double *ctm);
  60
  61   // Start a page.
  62   virtual void startPage(int pageNum, GfxState *state, double x1,double y1,double x2,double y2) {}
  63
  64   // End a page.
  65   virtual void endPage() {}
  66
  67   // Dump page contents to display.
  68   virtual void dump() {}
  69
  70   //----- coordinate conversion
  71
  72   // Convert between device and user coordinates.
  73   virtual void cvtDevToUser(int dx, int dy, double *ux, double *uy);
  74   virtual void cvtUserToDev(double ux, double uy, int *dx, int *dy);
  75
  76   //----- link borders
  77   virtual void drawLink(Link *link, Catalog *catalog) {}
  78
  79   //----- save/restore graphics state
  80   virtual void saveState(GfxState *state) {}
  81   virtual void restoreState(GfxState *state) {}
  82
  83   //----- update graphics state
  84   virtual void updateAll(GfxState *state);
  85   virtual void updateCTM(GfxState *state, double m11, double m12,
  86                          double m21, double m22, double m31, double m32) {}
  87   virtual void updateLineDash(GfxState *state) {}
  88   virtual void updateFlatness(GfxState *state) {}
  89   virtual void updateLineJoin(GfxState *state) {}
  90   virtual void updateLineCap(GfxState *state) {}
  91   virtual void updateMiterLimit(GfxState *state) {}
  92   virtual void updateLineWidth(GfxState *state) {}
  93   virtual void updateFillColor(GfxState *state) {}
  94   virtual void updateStrokeColor(GfxState *state) {}
  95   virtual void updateFillOpacity(GfxState *state) {}
  96   virtual void updateStrokeOpacity(GfxState *state) {}
  97
  98   //----- update text state
  99   virtual void updateFont(GfxState *state) {}
 100   virtual void updateTextMat(GfxState *state) {}
 101   virtual void updateCharSpace(GfxState *state) {}
 102   virtual void updateRender(GfxState *state) {}
 103   virtual void updateRise(GfxState *state) {}
 104   virtual void updateWordSpace(GfxState *state) {}
 105   virtual void updateHorizScaling(GfxState *state) {}
 106   virtual void updateTextPos(GfxState *state) {}
 107   virtual void updateTextShift(GfxState *state, double shift) {}
 108
 109   //----- path painting
 110   virtual void stroke(GfxState *state) {}
 111   virtual void fill(GfxState *state) {}
 112   virtual void eoFill(GfxState *state) {}
 113
 114   //----- path clipping
 115   virtual void clip(GfxState *state) {}
 116   virtual void eoClip(GfxState *state) {}
 117
 118   //----- text drawing
 119   virtual void beginString(GfxState *state, GString *s) {}
 120   virtual void endString(GfxState *state) {}
 121   virtual void drawChar(GfxState *state, double x, double y,
 122                         double dx, double dy,
 123                         double originX, double originY,
 124                         CharCode code, Unicode *u, int uLen) {}
 125   virtual void drawString(GfxState *state, GString *s) {}
 126   virtual GBool beginType3Char(GfxState *state,
 127                                CharCode code, Unicode *u, int uLen);
 128   virtual void endType3Char(GfxState *state) {}
 129
 130   //----- image drawing
 131   virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
 132                              int width, int height, GBool invert,
 133                              GBool inlineImg);
 134   virtual void drawImage(GfxState *state, Object *ref, Stream *str,
 135                          int width, int height, GfxImageColorMap *colorMap,
 136                          int *maskColors, GBool inlineImg);
 137
 138 #if OPI_SUPPORT
 139   //----- OPI functions
 140   virtual void opiBegin(GfxState *state, Dict *opiDict);
 141   virtual void opiEnd(GfxState *state, Dict *opiDict);
 142 #endif
 143
 144   //----- Type 3 font operators
 145   virtual void type3D0(GfxState *state, double wx, double wy) {}
 146   virtual void type3D1(GfxState *state, double wx, double wy,
 147                        double llx, double lly, double urx, double ury) {}
 148
 149   //----- PostScript XObjects
 150   virtual void psXObject(Stream *psStream, Stream *level1Stream) {}
 151
 152 private:
 153
 154   double defCTM[6];             // default coordinate transform matrix
 155   double defICTM[6];            // inverse of default CTM
 156 };
 157
 158 #endif