rosapps/smartpdf/poppler/poppler/CairoOutputDev.h

   1 //========================================================================
   2 //
   3 // CairoOutputDev.h
   4 //
   5 // Copyright 2003 Glyph & Cog, LLC
   6 // Copyright 2004 Red Hat, INC
   7 //
   8 //========================================================================
   9
  10 #ifndef CAIROOUTPUTDEV_H
  11 #define CAIROOUTPUTDEV_H
  12
  13 #ifdef USE_GCC_PRAGMAS
  14 #pragma interface
  15 #endif
  16
  17 #include "goo/gtypes.h"
  18 #include <cairo-ft.h>
  19 #include "OutputDev.h"
  20 #include "GfxState.h"
  21
  22 class GfxState;
  23 class GfxPath;
  24 class Gfx8BitFont;
  25 struct GfxRGB;
  26 class CairoFontEngine;
  27 class CairoFont;
  28
  29 //------------------------------------------------------------------------
  30
  31 //------------------------------------------------------------------------
  32 // CairoOutputDev
  33 //------------------------------------------------------------------------
  34
  35 class CairoOutputDev: public OutputDev {
  36 public:
  37
  38   // Constructor.
  39   CairoOutputDev();
  40
  41   // Destructor.
  42   virtual ~CairoOutputDev();
  43
  44   //----- get info about output device
  45
  46   // Does this device use upside-down coordinates?
  47   // (Upside-down means (0,0) is the top left corner of the page.)
  48   virtual GBool upsideDown() { return gTrue; }
  49
  50   // Does this device use drawChar() or drawString()?
  51   virtual GBool useDrawChar() { return gTrue; }
  52
  53   // Does this device use beginType3Char/endType3Char?  Otherwise,
  54   // text in Type 3 fonts will be drawn with drawChar/drawString.
  55   virtual GBool interpretType3Chars() { return gTrue; }
  56
  57   //----- initialization and control
  58
  59   // Start a page.
  60   virtual void startPage(int pageNum, GfxState *state) { }
  61
  62   // End a page.
  63   virtual void endPage() { }
  64
  65   //----- link borders
  66   virtual void drawLink(Link *link, Catalog *catalog);
  67
  68   //----- save/restore graphics state
  69   virtual void saveState(GfxState *state);
  70   virtual void restoreState(GfxState *state);
  71
  72   //----- update graphics state
  73   virtual void updateAll(GfxState *state);
  74   virtual void setDefaultCTM(double *ctm);
  75   virtual void updateCTM(GfxState *state, double m11, double m12,
  76                          double m21, double m22, double m31, double m32);
  77   virtual void updateLineDash(GfxState *state);
  78   virtual void updateFlatness(GfxState *state);
  79   virtual void updateLineJoin(GfxState *state);
  80   virtual void updateLineCap(GfxState *state);
  81   virtual void updateMiterLimit(GfxState *state);
  82   virtual void updateLineWidth(GfxState *state);
  83   virtual void updateFillColor(GfxState *state);
  84   virtual void updateStrokeColor(GfxState *state);
  85   virtual void updateFillOpacity(GfxState *state);
  86   virtual void updateStrokeOpacity(GfxState *state);
  87
  88   //----- update text state
  89   virtual void updateFont(GfxState *state);
  90
  91   //----- path painting
  92   virtual void stroke(GfxState *state);
  93   virtual void fill(GfxState *state);
  94   virtual void eoFill(GfxState *state);
  95
  96   //----- path clipping
  97   virtual void clip(GfxState *state);
  98   virtual void eoClip(GfxState *state);
  99
 100   //----- text drawing
 101   void beginString(GfxState *state, GooString *s);
 102   void endString(GfxState *state);
 103   void drawChar(GfxState *state, double x, double y,
 104                 double dx, double dy,
 105                 double originX, double originY,
 106                 CharCode code, int nBytes, Unicode *u, int uLen);
 107
 108   virtual GBool beginType3Char(GfxState *state, double x, double y,
 109                                double dx, double dy,
 110                                CharCode code, Unicode *u, int uLen);
 111   virtual void endType3Char(GfxState *state);
 112   virtual void endTextObject(GfxState *state);
 113
 114   //----- image drawing
 115   virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
 116                              int width, int height, GBool invert,
 117                              GBool inlineImg);
 118   virtual void drawImage(GfxState *state, Object *ref, Stream *str,
 119                          int width, int height, GfxImageColorMap *colorMap,
 120                          int *maskColors, GBool inlineImg);
 121   virtual void drawSoftMaskedImage(GfxState *state, Object *ref, Stream *str,
 122                                 int width, int height,
 123                                 GfxImageColorMap *colorMap,
 124                                 Stream *maskStr,
 125                                 int maskWidth, int maskHeight,
 126                                 GfxImageColorMap *maskColorMap);
 127
 128   virtual void drawMaskedImage(GfxState *state, Object *ref, Stream *str,
 129                                 int width, int height,
 130                                 GfxImageColorMap *colorMap,
 131                                 Stream *maskStr,
 132                                 int maskWidth, int maskHeight,
 133                                 GBool maskInvert);
 134
 135
 136   //----- Type 3 font operators
 137   virtual void type3D0(GfxState *state, double wx, double wy);
 138   virtual void type3D1(GfxState *state, double wx, double wy,
 139                        double llx, double lly, double urx, double ury);
 140
 141   //----- special access
 142
 143   // Called to indicate that a new PDF document has been loaded.
 144   void startDoc(XRef *xrefA);
 145
 146   GBool isReverseVideo() { return gFalse; }
 147
 148   void setCairo (cairo_t *cr);
 149
 150 protected:
 151   void doPath(GfxState *state, GfxPath *path);
 152
 153   GfxRGB fill_color, stroke_color;
 154   cairo_pattern_t *fill_pattern, *stroke_pattern;
 155   double fill_opacity;
 156   double stroke_opacity;
 157   CairoFont *currentFont;
 158
 159   XRef *xref;                   // xref table for current document
 160
 161   FT_Library ft_lib;
 162   CairoFontEngine *fontEngine;
 163   cairo_t *cairo;
 164   GBool needFontUpdate;                // set when the font needs to be updated
 165   cairo_surface_t *surface;
 166   cairo_glyph_t *glyphs;
 167   int glyphCount;
 168   cairo_path_t *textClipPath;
 169 };
 170
 171 #endif