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1/////////////////////////////////////////////////////////////////////////////
2// Name: wx/graphdc.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/geometry.h"
18#include "wx/dynarray.h"
19#include "wx/graphics.h"
20
21class WXDLLIMPEXP_FWD_CORE wxWindowDC;
22
23#ifdef __WXMAC__
24#define wxGCDC wxDC
25#endif
26
27class WXDLLEXPORT wxGCDC:
28#ifdef __WXMAC__
29 public wxDCBase
30#else
31 public wxDC
32#endif
33{
34 DECLARE_DYNAMIC_CLASS(wxGCDC)
35 DECLARE_NO_COPY_CLASS(wxGCDC)
36
37public:
38 wxGCDC(const wxWindowDC& dc);
39#ifdef __WXMSW__
40 wxGCDC( const wxMemoryDC& dc);
41#endif
42 wxGCDC();
43 virtual ~wxGCDC();
44
45 void Init();
46
47
48 // implement base class pure virtuals
49 // ----------------------------------
50
51 virtual void Clear();
52
53 virtual bool StartDoc( const wxString& message );
54 virtual void EndDoc();
55
56 virtual void StartPage();
57 virtual void EndPage();
58
59 // flushing the content of this dc immediately onto screen
60 virtual void Flush();
61
62 virtual void SetFont(const wxFont& font);
63 virtual void SetPen(const wxPen& pen);
64 virtual void SetBrush(const wxBrush& brush);
65 virtual void SetBackground(const wxBrush& brush);
66 virtual void SetBackgroundMode(int mode);
67 virtual void SetPalette(const wxPalette& palette);
68
69 virtual void DestroyClippingRegion();
70
71 virtual wxCoord GetCharHeight() const;
72 virtual wxCoord GetCharWidth() const;
73
74 virtual bool CanDrawBitmap() const;
75 virtual bool CanGetTextExtent() const;
76 virtual int GetDepth() const;
77 virtual wxSize GetPPI() const;
78
79 virtual void SetMapMode(int mode);
80 virtual void SetUserScale(double x, double y);
81
82 virtual void SetLogicalScale(double x, double y);
83 virtual void SetLogicalOrigin(wxCoord x, wxCoord y);
84 virtual void SetDeviceOrigin(wxCoord x, wxCoord y);
85 virtual void SetAxisOrientation(bool xLeftRight, bool yBottomUp);
86 virtual void SetLogicalFunction(int function);
87
88 virtual void SetTextForeground(const wxColour& colour);
89 virtual void SetTextBackground(const wxColour& colour);
90
91 virtual void ComputeScaleAndOrigin();
92
93 wxGraphicsContext* GetGraphicsContext() { return m_graphicContext; }
94 virtual void SetGraphicsContext( wxGraphicsContext* ctx );
95
96protected:
97 // the true implementations
98 virtual bool DoFloodFill(wxCoord x, wxCoord y, const wxColour& col,
99 int style = wxFLOOD_SURFACE);
100
101 virtual void DoGradientFillLinear(const wxRect& rect,
102 const wxColour& initialColour,
103 const wxColour& destColour,
104 wxDirection nDirection = wxEAST);
105
106 virtual void DoGradientFillConcentric(const wxRect& rect,
107 const wxColour& initialColour,
108 const wxColour& destColour,
109 const wxPoint& circleCenter);
110
111 virtual bool DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const;
112
113 virtual void DoDrawPoint(wxCoord x, wxCoord y);
114
115#if wxUSE_SPLINES
116 virtual void DoDrawSpline(const wxPointList *points);
117#endif
118
119 virtual void DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2);
120
121 virtual void DoDrawArc(wxCoord x1, wxCoord y1,
122 wxCoord x2, wxCoord y2,
123 wxCoord xc, wxCoord yc);
124
125 virtual void DoDrawCheckMark(wxCoord x, wxCoord y,
126 wxCoord width, wxCoord height);
127
128 virtual void DoDrawEllipticArc(wxCoord x, wxCoord y, wxCoord w, wxCoord h,
129 double sa, double ea);
130
131 virtual void DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
132 virtual void DoDrawRoundedRectangle(wxCoord x, wxCoord y,
133 wxCoord width, wxCoord height,
134 double radius);
135 virtual void DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height);
136
137 virtual void DoCrossHair(wxCoord x, wxCoord y);
138
139 virtual void DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y);
140 virtual void DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y,
141 bool useMask = false);
142
143 virtual void DoDrawText(const wxString& text, wxCoord x, wxCoord y);
144 virtual void DoDrawRotatedText(const wxString& text, wxCoord x, wxCoord y,
145 double angle);
146
147 virtual bool DoBlit(wxCoord xdest, wxCoord ydest, wxCoord width, wxCoord height,
148 wxDC *source, wxCoord xsrc, wxCoord ysrc,
149 int rop = wxCOPY, bool useMask = false, wxCoord xsrcMask = -1, wxCoord ysrcMask = -1);
150
151 virtual bool DoStretchBlit(wxCoord xdest, wxCoord ydest,
152 wxCoord dstWidth, wxCoord dstHeight,
153 wxDC *source,
154 wxCoord xsrc, wxCoord ysrc,
155 wxCoord srcWidth, wxCoord srcHeight,
156 int rop = wxCOPY, bool useMask = false,
157 wxCoord xsrcMask = wxDefaultCoord, wxCoord ysrcMask = wxDefaultCoord);
158
159 virtual void DoGetSize(int *,int *) const;
160 virtual void DoGetSizeMM(int* width, int* height) const;
161
162 virtual void DoDrawLines(int n, wxPoint points[],
163 wxCoord xoffset, wxCoord yoffset);
164 virtual void DoDrawPolygon(int n, wxPoint points[],
165 wxCoord xoffset, wxCoord yoffset,
166 int fillStyle = wxODDEVEN_RULE);
167 virtual void DoDrawPolyPolygon(int n, int count[], wxPoint points[],
168 wxCoord xoffset, wxCoord yoffset,
169 int fillStyle);
170
171 virtual void DoSetClippingRegionAsRegion(const wxRegion& region);
172 virtual void DoSetClippingRegion(wxCoord x, wxCoord y,
173 wxCoord width, wxCoord height);
174
175 virtual void DoGetTextExtent(const wxString& string,
176 wxCoord *x, wxCoord *y,
177 wxCoord *descent = NULL,
178 wxCoord *externalLeading = NULL,
179 const wxFont *theFont = NULL) const;
180
181 virtual bool DoGetPartialTextExtents(const wxString& text, wxArrayInt& widths) const;
182
183protected:
184 // scaling variables
185 bool m_logicalFunctionSupported;
186 double m_mm_to_pix_x, m_mm_to_pix_y;
187 wxGraphicsMatrix m_matrixOriginal;
188 wxGraphicsMatrix m_matrixCurrent;
189
190 double m_formerScaleX, m_formerScaleY;
191
192 wxGraphicsContext* m_graphicContext;
193};
194
195#endif
196
197#endif // _WX_GRAPHICS_DC_H_
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