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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: wx/dcgraph.h
3 // Purpose: graphics context device bridge header
4 // Author: Stefan Csomor
5 // Modified by:
6 // Created:
7 // Copyright: (c) Stefan Csomor
8 // RCS-ID: $Id$
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 #ifndef _WX_GRAPHICS_DC_H_
13 #define _WX_GRAPHICS_DC_H_
14
15 #if wxUSE_GRAPHICS_CONTEXT
16
17 #include "wx/dc.h"
18 #include "wx/geometry.h"
19 #include "wx/graphics.h"
20
21 class WXDLLIMPEXP_FWD_CORE wxWindowDC;
22
23
24 class WXDLLIMPEXP_CORE wxGCDC: public wxDC
25 {
26 public:
27 wxGCDC( const wxWindowDC& dc );
28 wxGCDC( const wxMemoryDC& dc );
29 #if wxUSE_PRINTING_ARCHITECTURE
30 wxGCDC( const wxPrinterDC& dc );
31 #endif
32 #if defined(__WXMSW__) && wxUSE_ENH_METAFILE
33 wxGCDC( const wxEnhMetaFileDC& dc );
34 #endif
35 wxGCDC();
36 virtual ~wxGCDC();
37
38 wxGraphicsContext* GetGraphicsContext() const;
39 void SetGraphicsContext( wxGraphicsContext* ctx );
40
41 #ifdef __WXMSW__
42 // override wxDC virtual functions to provide access to HDC associated with
43 // this Graphics object (implemented in src/msw/graphics.cpp)
44 virtual WXHDC AcquireHDC();
45 virtual void ReleaseHDC(WXHDC hdc);
46 #endif // __WXMSW__
47
48 private:
49 DECLARE_DYNAMIC_CLASS(wxGCDC)
50 wxDECLARE_NO_COPY_CLASS(wxGCDC);
51 };
52
53
54 class WXDLLIMPEXP_CORE wxGCDCImpl: public wxDCImpl
55 {
56 public:
57 wxGCDCImpl( wxDC *owner, const wxWindowDC& dc );
58 wxGCDCImpl( wxDC *owner, const wxMemoryDC& dc );
59 #if wxUSE_PRINTING_ARCHITECTURE
60 wxGCDCImpl( wxDC *owner, const wxPrinterDC& dc );
61 #endif
62 #if defined(__WXMSW__) && wxUSE_ENH_METAFILE
63 wxGCDCImpl( wxDC *owner, const wxEnhMetaFileDC& dc );
64 #endif
65 wxGCDCImpl( wxDC *owner );
66
67 virtual ~wxGCDCImpl();
68
69 void Init();
70
71
72 // implement base class pure virtuals
73 // ----------------------------------
74
75 virtual void Clear();
76
77 virtual bool StartDoc( const wxString& message );
78 virtual void EndDoc();
79
80 virtual void StartPage();
81 virtual void EndPage();
82
83 // flushing the content of this dc immediately onto screen
84 virtual void Flush();
85
86 virtual void SetFont(const wxFont& font);
87 virtual void SetPen(const wxPen& pen);
88 virtual void SetBrush(const wxBrush& brush);
89 virtual void SetBackground(const wxBrush& brush);
90 virtual void SetBackgroundMode(int mode);
91 virtual void SetPalette(const wxPalette& palette);
92
93 virtual void DestroyClippingRegion();
94
95 virtual wxCoord GetCharHeight() const;
96 virtual wxCoord GetCharWidth() const;
97
98 virtual bool CanDrawBitmap() const;
99 virtual bool CanGetTextExtent() const;
100 virtual int GetDepth() const;
101 virtual wxSize GetPPI() const;
102
103 virtual void SetMapMode(wxMappingMode mode);
104
105 virtual void SetLogicalFunction(wxRasterOperationMode function);
106
107 virtual void SetTextForeground(const wxColour& colour);
108 virtual void SetTextBackground(const wxColour& colour);
109
110 virtual void ComputeScaleAndOrigin();
111
112 wxGraphicsContext* GetGraphicsContext() const { return m_graphicContext; }
113 virtual void SetGraphicsContext( wxGraphicsContext* ctx );
114
115 // the true implementations
116 virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
117 wxFloodFillStyle style = wxFLOOD_SURFACE);
118
119 virtual void DoGradientFillLinear(const wxRect& rect,
120 const wxColour& initialColour,
121 const wxColour& destColour,
122 wxDirection nDirection = wxEAST);
123
124 virtual void DoGradientFillConcentric(const wxRect& rect,
125 const wxColour& initialColour,
126 const wxColour& destColour,
127 const wxPoint& circleCenter);
128
129 virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
130
131 virtual void DoDrawPoint(wxCoord x, wxCoord y);
132
133 #if wxUSE_SPLINES
134 virtual void DoDrawSpline(const wxPointList *points);
135 #endif
136
137 virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
138
139 virtual void DoDrawArc(wxCoord x1, wxCoord y1,
140 wxCoord x2, wxCoord y2,
141 wxCoord xc, wxCoord yc);
142
143 virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
144 wxCoord width, wxCoord height);
145
146 virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
147 double sa, double ea);
148
149 virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
150 virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
151 wxCoord width, wxCoord height,
152 double radius);
153 virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
154
155 virtual void DoCrossHair(wxCoord x, wxCoord y);
156
157 virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
158 virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
159 bool useMask = false);
160
161 virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
162 virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
163 double angle);
164
165 virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
166 wxDC *source, wxCoord xsrc, wxCoord ysrc,
167 wxRasterOperationMode rop = wxCOPY, bool useMask = false,
168 wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
169
170 virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
171 wxCoord dstWidth, wxCoord dstHeight,
172 wxDC *source,
173 wxCoord xsrc, wxCoord ysrc,
174 wxCoord srcWidth, wxCoord srcHeight,
175 wxRasterOperationMode = wxCOPY, bool useMask = false,
176 wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
177
178 virtual void DoGetSize(int *,int *) const;
179 virtual void DoGetSizeMM(int* width, int* height) const;
180
181 virtual void DoDrawLines(int n, wxPoint points[],
182 wxCoord xoffset, wxCoord yoffset);
183 virtual void DoDrawPolygon(int n, wxPoint points[],
184 wxCoord xoffset, wxCoord yoffset,
185 wxPolygonFillMode fillStyle = wxODDEVEN_RULE);
186 virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
187 wxCoord xoffset, wxCoord yoffset,
188 wxPolygonFillMode fillStyle);
189
190 virtual void DoSetDeviceClippingRegion(const wxRegion& region);
191 virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
192 wxCoord width, wxCoord height);
193
194 virtual void DoGetTextExtent(const wxString& string,
195 wxCoord *x, wxCoord *y,
196 wxCoord *descent = NULL,
197 wxCoord *externalLeading = NULL,
198 const wxFont *theFont = NULL) const;
199
200 virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
201
202 #ifdef __WXMSW__
203 virtual wxRect MSWApplyGDIPlusTransform(const wxRect& r) const;
204 #endif // __WXMSW__
205
206 protected:
207 // scaling variables
208 bool m_logicalFunctionSupported;
209 double m_mm_to_pix_x, m_mm_to_pix_y;
210 wxGraphicsMatrix m_matrixOriginal;
211 wxGraphicsMatrix m_matrixCurrent;
212
213 double m_formerScaleX, m_formerScaleY;
214
215 wxGraphicsContext* m_graphicContext;
216
217 DECLARE_CLASS(wxGCDCImpl)
218 wxDECLARE_NO_COPY_CLASS(wxGCDCImpl);
219 };
220
221 #endif // wxUSE_GRAPHICS_CONTEXT
222 #endif // _WX_GRAPHICS_DC_H_