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1/////////////////////////////////////////////////////////////////////////////
2// Name: dc.h
3// Purpose:
4// Author: Robert Roebling
5// Created: 01/02/97
6// Id:
7// Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
8// Licence: wxWindows licence
9/////////////////////////////////////////////////////////////////////////////
10
11
12#ifndef __GTKDCH__
13#define __GTKDCH__
14
15#ifdef __GNUG__
16#pragma interface
17#endif
18
19#include "wx/defs.h"
20#include "wx/object.h"
21#include "wx/gdicmn.h"
22#include "wx/pen.h"
23#include "wx/brush.h"
24#include "wx/icon.h"
25#include "wx/font.h"
26#include "wx/gdicmn.h"
27
28//-----------------------------------------------------------------------------
29// classes
30//-----------------------------------------------------------------------------
31
32class wxDC;
33
34//-----------------------------------------------------------------------------
35// constants
36//-----------------------------------------------------------------------------
37
38#define MM_TEXT 0
39#define MM_ISOTROPIC 1
40#define MM_ANISOTROPIC 2
41#define MM_LOMETRIC 3
42#define MM_HIMETRIC 4
43#define MM_TWIPS 5
44#define MM_POINTS 6
45#define MM_METRIC 7
46
47//-----------------------------------------------------------------------------
48// global variables
49//-----------------------------------------------------------------------------
50
51extern int wxPageNumber;
52
53//-----------------------------------------------------------------------------
54// wxDC
55//-----------------------------------------------------------------------------
56
57class wxDC: public wxObject
58{
59 DECLARE_ABSTRACT_CLASS(wxDC)
60
61 public:
62
63 wxDC(void);
64 ~wxDC(void);
65
66 void BeginDrawing(void) {};
67 void EndDrawing(void) {};
68
cf7a7e13 69 virtual bool Ok(void) const;
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70
71 virtual void FloodFill( long x1, long y1, wxColour *col, int style=wxFLOOD_SURFACE ) = 0;
72 virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
73
74 virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
75 virtual void CrossHair( long x, long y ) = 0;
76 virtual void DrawArc( long x1, long y1, long x2, long y2, double xc, double yc );
77 virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
78 virtual void DrawPoint( long x, long y ) = 0;
79 virtual void DrawPoint( wxPoint& point );
80
81 virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
82 virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
83 virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0,
84 int fillStyle=wxODDEVEN_RULE ) = 0;
85 virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0,
86 int fillStyle=wxODDEVEN_RULE );
87
88 virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
89 virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
90 virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
91
92 virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
dfad0599 93 virtual void DrawSpline( wxList *points ) = 0;
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94 virtual void DrawSpline( int n, wxPoint points[] );
95
96 virtual bool CanDrawBitmap(void) const = 0;
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97 virtual void DrawIcon( const wxIcon &icon, long x, long y )
98 { DrawIcon( icon, x, y, TRUE ); }
99 virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask );
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100 void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
101 { DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
102 virtual bool Blit( long xdest, long ydest, long width, long height,
103 wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
104
105 virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
106 virtual bool CanGetTextExtent(void) const = 0;
107 virtual void GetTextExtent( const wxString &string, long *width, long *height,
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108 long *descent = (long *) NULL, long *externalLeading = (long *) NULL,
109 wxFont *theFont = (wxFont *) NULL, bool use16 = FALSE ) = 0;
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110 virtual long GetCharWidth(void) = 0;
111 virtual long GetCharHeight(void) = 0;
112
113 virtual void Clear(void) = 0;
114
115 virtual void SetFont( const wxFont &font ) = 0;
116 virtual wxFont *GetFont(void) { return &m_font; };
117
118 virtual void SetPen( const wxPen &pen ) = 0;
119 virtual wxPen *GetPen(void) { return &m_pen; };
120
121 virtual void SetBrush( const wxBrush &brush ) = 0;
122 virtual wxBrush *GetBrush(void) { return &m_brush; };
123
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124 virtual void SetBackground( const wxBrush &brush ) = 0;
125 virtual wxBrush *GetBackground(void) { return &m_backgroundBrush; };
126
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127 virtual void SetLogicalFunction( int function ) = 0;
128 virtual int GetLogicalFunction(void) { return m_logicalFunction; };
129
130 virtual void SetTextForeground( const wxColour &col );
131 virtual void SetTextBackground( const wxColour &col );
132 virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
133 virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
134
135 virtual void SetBackgroundMode( int mode ) = 0;
136 virtual int GetBackgroundMode(void) { return m_backgroundMode; };
137
138 virtual void SetPalette( const wxPalette& palette ) = 0;
139 void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
140
141 // the first two must be overridden and called
142 virtual void SetClippingRegion( long x, long y, long width, long height );
143 virtual void DestroyClippingRegion(void);
144 virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
145
146 virtual inline long MinX(void) const { return m_minX; }
147 virtual inline long MaxX(void) const { return m_maxX; }
148 virtual inline long MinY(void) const { return m_minY; }
149 virtual inline long MaxY(void) const { return m_maxY; }
150
151 virtual void GetSize( int* width, int* height ) const;
152 inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
153 virtual void GetSizeMM( long* width, long* height ) const;
154
155 virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
156 virtual void EndDoc(void) {};
157 virtual void StartPage(void) {};
158 virtual void EndPage(void) {};
159
160 virtual void SetMapMode( int mode );
161 virtual int GetMapMode(void) const { return m_mappingMode; };
162
163 virtual void SetUserScale( double x, double y );
164 virtual void GetUserScale( double *x, double *y );
165 virtual void SetLogicalScale( double x, double y );
166 virtual void GetLogicalScale( double *x, double *y );
167
168 virtual void SetLogicalOrigin( long x, long y );
169 virtual void GetLogicalOrigin( long *x, long *y );
170 virtual void SetDeviceOrigin( long x, long y );
171 virtual void GetDeviceOrigin( long *x, long *y );
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172
173 virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
174
175 virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
176 virtual bool GetOptimization(void) { return m_optimize; };
177
178 virtual long DeviceToLogicalX(long x) const;
179 virtual long DeviceToLogicalY(long y) const;
180 virtual long DeviceToLogicalXRel(long x) const;
181 virtual long DeviceToLogicalYRel(long y) const;
182 virtual long LogicalToDeviceX(long x) const;
183 virtual long LogicalToDeviceY(long y) const;
184 virtual long LogicalToDeviceXRel(long x) const;
185 virtual long LogicalToDeviceYRel(long y) const;
186
187 public:
188
189 void CalcBoundingBox( long x, long y );
190 void ComputeScaleAndOrigin(void);
191
192 long XDEV2LOG(long x) const
193 {
194 long new_x = x - m_deviceOriginX;
195 if (new_x > 0)
196 return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
197 else
198 return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
199 }
200 long XDEV2LOGREL(long x) const
201 {
202 if (x > 0)
203 return (long)((double)(x) / m_scaleX + 0.5);
204 else
205 return (long)((double)(x) / m_scaleX - 0.5);
206 }
207 long YDEV2LOG(long y) const
208 {
209 long new_y = y - m_deviceOriginY;
210 if (new_y > 0)
211 return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
212 else
213 return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
214 }
215 long YDEV2LOGREL(long y) const
216 {
217 if (y > 0)
218 return (long)((double)(y) / m_scaleY + 0.5);
219 else
220 return (long)((double)(y) / m_scaleY - 0.5);
221 }
222 long XLOG2DEV(long x) const
223 {
224 long new_x = x - m_logicalOriginX;
225 if (new_x > 0)
226 return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
227 else
228 return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
229 }
230 long XLOG2DEVREL(long x) const
231 {
232 if (x > 0)
233 return (long)((double)(x) * m_scaleX + 0.5);
234 else
235 return (long)((double)(x) * m_scaleX - 0.5);
236 }
237 long YLOG2DEV(long y) const
238 {
239 long new_y = y - m_logicalOriginY;
240 if (new_y > 0)
241 return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
242 else
243 return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
244 }
245 long YLOG2DEVREL(long y) const
246 {
247 if (y > 0)
248 return (long)((double)(y) * m_scaleY + 0.5);
249 else
250 return (long)((double)(y) * m_scaleY - 0.5);
251 }
252
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253
254 public:
255
256 bool m_ok;
257 bool m_colour;
258
259 // not sure, what these mean
260 bool m_clipping; // Is clipping on right now ?
261 bool m_isInteractive; // Is GetPixel possible ?
262 bool m_autoSetting; // wxMSW only ?
263 bool m_dontDelete; // wxMSW only ?
264 bool m_optimize; // wxMSW only ?
265 wxString m_filename; // Not sure where this belongs.
266
267 wxPen m_pen;
268 wxBrush m_brush;
269 wxBrush m_backgroundBrush;
270 wxColour m_textForegroundColour;
271 wxColour m_textBackgroundColour;
272 wxFont m_font;
273
274 int m_logicalFunction;
275 int m_backgroundMode;
276 int m_textAlignment; // gone in wxWin 2.0 ?
277
278 int m_mappingMode;
279
280 // not sure what for, but what is a mm on a screen you don't know the size of?
281 double m_mm_to_pix_x,m_mm_to_pix_y;
282
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283 long m_deviceOriginX,m_deviceOriginY; // Sum of the two above.
284
285 long m_logicalOriginX,m_logicalOriginY; // User defined.
286
287 double m_scaleX,m_scaleY;
288 double m_logicalScaleX,m_logicalScaleY;
289 double m_userScaleX,m_userScaleY;
290 long m_signX,m_signY;
291
292 bool m_needComputeScaleX,m_needComputeScaleY; // not yet used
293
294 float m_scaleFactor; // wxPSDC wants to have this. Will disappear.
295
296 long m_clipX1,m_clipY1,m_clipX2,m_clipY2;
297 long m_minX,m_maxX,m_minY,m_maxY;
298};
299
300#endif // __GTKDCH__