1 //========================================================================
5 // Copyright 1996-2002 Glyph & Cog, LLC
7 //========================================================================
17 #include "CharTypes.h"
23 class GfxImageColorMap;
28 //------------------------------------------------------------------------
30 //------------------------------------------------------------------------
39 virtual ~OutputDev() {}
41 //----- get info about output device
43 // Does this device use upside-down coordinates?
44 // (Upside-down means (0,0) is the top left corner of the page.)
45 virtual GBool upsideDown() = 0;
47 // Does this device use drawChar() or drawString()?
48 virtual GBool useDrawChar() = 0;
50 // Does this device use beginType3Char/endType3Char? Otherwise,
51 // text in Type 3 fonts will be drawn with drawChar/drawString.
52 virtual GBool interpretType3Chars() = 0;
54 // Does this device need non-text content?
55 virtual GBool needNonText() { return gTrue; }
57 //----- initialization and control
59 // Set default transform matrix.
60 virtual void setDefaultCTM(double *ctm);
63 virtual void startPage(int pageNum, GfxState *state) {}
66 virtual void endPage() {}
68 // Dump page contents to display.
69 virtual void dump() {}
71 //----- coordinate conversion
73 // Convert between device and user coordinates.
74 virtual void cvtDevToUser(int dx, int dy, double *ux, double *uy);
75 virtual void cvtUserToDev(double ux, double uy, int *dx, int *dy);
78 virtual void drawLink(Link *link, Catalog *catalog) {}
80 //----- save/restore graphics state
81 virtual void saveState(GfxState *state) {}
82 virtual void restoreState(GfxState *state) {}
84 //----- update graphics state
85 virtual void updateAll(GfxState *state);
86 virtual void updateCTM(GfxState *state, double m11, double m12,
87 double m21, double m22, double m31, double m32) {}
88 virtual void updateLineDash(GfxState *state) {}
89 virtual void updateFlatness(GfxState *state) {}
90 virtual void updateLineJoin(GfxState *state) {}
91 virtual void updateLineCap(GfxState *state) {}
92 virtual void updateMiterLimit(GfxState *state) {}
93 virtual void updateLineWidth(GfxState *state) {}
94 virtual void updateFillColor(GfxState *state) {}
95 virtual void updateStrokeColor(GfxState *state) {}
96 virtual void updateFillOpacity(GfxState *state) {}
97 virtual void updateStrokeOpacity(GfxState *state) {}
99 //----- update text state
100 virtual void updateFont(GfxState *state) {}
101 virtual void updateTextMat(GfxState *state) {}
102 virtual void updateCharSpace(GfxState *state) {}
103 virtual void updateRender(GfxState *state) {}
104 virtual void updateRise(GfxState *state) {}
105 virtual void updateWordSpace(GfxState *state) {}
106 virtual void updateHorizScaling(GfxState *state) {}
107 virtual void updateTextPos(GfxState *state) {}
108 virtual void updateTextShift(GfxState *state, double shift) {}
110 //----- path painting
111 virtual void stroke(GfxState *state) {}
112 virtual void fill(GfxState *state) {}
113 virtual void eoFill(GfxState *state) {}
115 //----- path clipping
116 virtual void clip(GfxState *state) {}
117 virtual void eoClip(GfxState *state) {}
120 virtual void beginString(GfxState *state, GString *s) {}
121 virtual void endString(GfxState *state) {}
122 virtual void drawChar(GfxState *state, double x, double y,
123 double dx, double dy,
124 double originX, double originY,
125 CharCode code, Unicode *u, int uLen) {}
126 virtual void drawString(GfxState *state, GString *s) {}
127 virtual GBool beginType3Char(GfxState *state,
128 CharCode code, Unicode *u, int uLen);
129 virtual void endType3Char(GfxState *state) {}
131 //----- image drawing
132 virtual void drawImageMask(GfxState *state, Object *ref, Stream *str,
133 int width, int height, GBool invert,
135 virtual void drawImage(GfxState *state, Object *ref, Stream *str,
136 int width, int height, GfxImageColorMap *colorMap,
137 int *maskColors, GBool inlineImg);
140 //----- OPI functions
141 virtual void opiBegin(GfxState *state, Dict *opiDict);
142 virtual void opiEnd(GfxState *state, Dict *opiDict);
145 //----- Type 3 font operators
146 virtual void type3D0(GfxState *state, double wx, double wy) {}
147 virtual void type3D1(GfxState *state, double wx, double wy,
148 double llx, double lly, double urx, double ury) {}
150 //----- PostScript XObjects
151 virtual void psXObject(Stream *psStream, Stream *level1Stream) {}
155 double defCTM[6]; // default coordinate transform matrix
156 double defICTM[6]; // inverse of default CTM