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SC		 1/////////////////////////////////////////////////////////////////////////////
2// Name: dc.h
3// Purpose: wxDC class
4// Author: AUTHOR
5// Modified by:
6// Created: ??/??/98
7// RCS-ID: $Id$
8// Copyright: (c) AUTHOR
9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
12#ifndef _WX_DC_H_
13#define _WX_DC_H_
14
15#ifdef __GNUG__
16#pragma interface "dc.h"
17#endif
18
19#include "wx/pen.h"
20#include "wx/brush.h"
21#include "wx/icon.h"
22#include "wx/font.h"
23#include "wx/gdicmn.h"
24
25//-----------------------------------------------------------------------------
26// constants
27//-----------------------------------------------------------------------------
28
29#ifndef MM_TEXT
30#define MM_TEXT 0
31#define MM_ISOTROPIC 1
32#define MM_ANISOTROPIC 2
33#define MM_LOMETRIC 3
34#define MM_HIMETRIC 4
35#define MM_TWIPS 5
36#define MM_POINTS 6
37#define MM_METRIC 7
38#endif
39
40//-----------------------------------------------------------------------------
41// global variables
42//-----------------------------------------------------------------------------
43
44extern int wxPageNumber;
45
46//-----------------------------------------------------------------------------
47// wxDC
48//-----------------------------------------------------------------------------
49
50class WXDLLEXPORT wxDC: public wxObject
51{
52 DECLARE_ABSTRACT_CLASS(wxDC)
53
54 public:
55
56 wxDC(void);
57 ~wxDC(void);
58
59 void BeginDrawing(void) {};
60 void EndDrawing(void) {};
61
62 virtual bool Ok(void) const { return m_ok; };
63
64 virtual void FloodFill( long x1, long y1, const wxColour& col, int style=wxFLOOD_SURFACE ) = 0;
65 inline void FloodFill(const wxPoint& pt, const wxColour& col, int style=wxFLOOD_SURFACE)
66 {
67 FloodFill(pt.x, pt.y, col, style);
68 }
69
70 virtual bool GetPixel( long x1, long y1, wxColour *col ) const = 0;
71 inline bool GetPixel(const wxPoint& pt, wxColour *col) const
72 {
73 return GetPixel(pt.x, pt.y, col);
74 }
75
76 virtual void DrawLine( long x1, long y1, long x2, long y2 ) = 0;
77 inline void DrawLine(const wxPoint& pt1, const wxPoint& pt2)
78 {
79 DrawLine(pt1.x, pt1.y, pt2.x, pt2.y);
80 }
81
82 virtual void CrossHair( long x, long y ) = 0;
83 inline void CrossHair(const wxPoint& pt)
84 {
85 CrossHair(pt.x, pt.y);
86 }
87
88 virtual void DrawArc( long x1, long y1, long x2, long y2, long xc, long yc ) = 0;
89 inline void DrawArc(const wxPoint& pt1, const wxPoint& pt2, const wxPoint& centre)
90 {
91 DrawArc(pt1.x, pt1.y, pt2.x, pt2.y, centre.x, centre.y);
92 }
93
94 virtual void DrawEllipticArc( long x, long y, long width, long height, double sa, double ea ) = 0;
95 virtual void DrawEllipticArc (const wxPoint& pt, const wxSize& sz, double sa, double ea)
96 {
97 DrawEllipticArc(pt.x, pt.y, sz.x, sz.y, sa, ea);
98 }
99
100 virtual void DrawPoint( long x, long y ) = 0;
101 virtual void DrawPoint( wxPoint& point );
102
103 virtual void DrawLines( int n, wxPoint points[], long xoffset = 0, long yoffset = 0 ) = 0;
104 virtual void DrawLines( wxList *points, long xoffset = 0, long yoffset = 0 );
105 virtual void DrawPolygon( int n, wxPoint points[], long xoffset = 0, long yoffset = 0,
106 int fillStyle=wxODDEVEN_RULE ) = 0;
107 virtual void DrawPolygon( wxList *lines, long xoffset = 0, long yoffset = 0,
108 int fillStyle=wxODDEVEN_RULE );
109
110 virtual void DrawRectangle( long x, long y, long width, long height ) = 0;
111 inline void DrawRectangle(const wxPoint& pt, const wxSize& sz)
112 {
113 DrawRectangle(pt.x, pt.y, sz.x, sz.y);
114 }
115 inline void DrawRectangle(const wxRect& rect)
116 {
117 DrawRectangle(rect.x, rect.y, rect.width, rect.height);
118 }
119 virtual void DrawRoundedRectangle( long x, long y, long width, long height, double radius = 20.0 ) = 0;
120 inline void DrawRoundedRectangle(const wxPoint& pt, const wxSize& sz, double radius = 20.0)
121 {
122 DrawRoundedRectangle(pt.x, pt.y, sz.x, sz.y, radius);
123 }
124 inline void DrawRoundedRectangle(const wxRect& rect, double radius = 20.0)
125 {
126 DrawRoundedRectangle(rect.x, rect.y, rect.width, rect.height, radius);
127 }
128
129 virtual void DrawEllipse( long x, long y, long width, long height ) = 0;
130 inline void DrawEllipse(const wxPoint& pt, const wxSize& sz)
131 {
132 DrawEllipse(pt.x, pt.y, sz.x, sz.y);
133 }
134 inline void DrawEllipse(const wxRect& rect)
135 {
136 DrawEllipse(rect.x, rect.y, rect.width, rect.height);
137 }
138
139 virtual void DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 );
140 virtual void DrawSpline( wxList *points ) = 0;
141 virtual void DrawSpline( int n, wxPoint points[] );
142
143 virtual bool CanDrawBitmap(void) const = 0;
144
145 virtual void DrawIcon( const wxIcon &icon, long x, long y, bool useMask=FALSE );
146 inline void DrawIcon(const wxIcon& icon, const wxPoint& pt)
147 {
148 DrawIcon(icon, pt.x, pt.y);
149 }
150
151 // TODO DrawBitmap is not always the same as DrawIcon, especially if bitmaps and
152 // icons are implemented differently.
153 void DrawBitmap( const wxBitmap &bmp, long x, long y, bool useMask=FALSE )
154 { DrawIcon( *((wxIcon*)(&bmp)), x, y, useMask ); }
155
156 virtual bool Blit( long xdest, long ydest, long width, long height,
157 wxDC *source, long xsrc, long ysrc, int logical_func = wxCOPY, bool useMask=FALSE ) = 0;
158 inline bool Blit(const wxPoint& destPt, const wxSize& sz,
159 wxDC *source, const wxPoint& srcPt, int rop = wxCOPY, bool useMask = FALSE)
160 {
161 return Blit(destPt.x, destPt.y, sz.x, sz.y, source, srcPt.x, srcPt.y, rop, useMask);
162 }
163
164 virtual void DrawText( const wxString &text, long x, long y, bool use16 = FALSE ) = 0;
165 inline void DrawText(const wxString& text, const wxPoint& pt, bool use16bit = FALSE)
166 {
167 DrawText(text, pt.x, pt.y, use16bit);
168 }
169
170 virtual bool CanGetTextExtent(void) const = 0;
171 virtual void GetTextExtent( const wxString &string, long *width, long *height,
172 long *descent = NULL, long *externalLeading = NULL,
173 wxFont *theFont = NULL, bool use16 = FALSE ) = 0;
174 virtual long GetCharWidth(void) = 0;
175 virtual long GetCharHeight(void) = 0;
176
177 virtual void Clear(void) = 0;
178
179 virtual void SetFont( const wxFont &font ) = 0;
180 virtual wxFont& GetFont(void) const { return (wxFont&) m_font; };
181
182 virtual void SetPen( const wxPen &pen ) = 0;
183 virtual wxPen& GetPen(void) const { return (wxPen&) m_pen; };
184
185 virtual void SetBrush( const wxBrush &brush ) = 0;
186 virtual wxBrush& GetBrush(void) const { return (wxBrush&) m_brush; };
187
188 virtual void SetBackground( const wxBrush &brush ) = 0;
189 virtual wxBrush& GetBackground(void) const { return (wxBrush&) m_backgroundBrush; };
190
191 virtual void SetLogicalFunction( int function ) = 0;
192 virtual int GetLogicalFunction(void) const { return m_logicalFunction; };
193
194 virtual void SetTextForeground( const wxColour &col );
195 virtual void SetTextBackground( const wxColour &col );
196 virtual wxColour& GetTextBackground(void) const { return (wxColour&)m_textBackgroundColour; };
197 virtual wxColour& GetTextForeground(void) const { return (wxColour&)m_textForegroundColour; };
198
199 virtual void SetBackgroundMode( int mode ) = 0;
200 virtual int GetBackgroundMode(void) const { return m_backgroundMode; };
201
202 virtual void SetPalette( const wxPalette& palette ) = 0;
203 void SetColourMap( const wxPalette& palette ) { SetPalette(palette); };
204
205 // the first two must be overridden and called
206 virtual void SetClippingRegion( long x, long y, long width, long height );
207 virtual void DestroyClippingRegion(void);
208 virtual void GetClippingBox( long *x, long *y, long *width, long *height ) const;
209
210 virtual inline long MinX(void) const { return m_minX; }
211 virtual inline long MaxX(void) const { return m_maxX; }
212 virtual inline long MinY(void) const { return m_minY; }
213 virtual inline long MaxY(void) const { return m_maxY; }
214
215 virtual void GetSize( int* width, int* height ) const;
216 inline wxSize GetSize(void) const { int w, h; GetSize(&w, &h); return wxSize(w, h); }
217 virtual void GetSizeMM( long* width, long* height ) const;
218
219 virtual bool StartDoc( const wxString& WXUNUSED(message) ) { return TRUE; };
220 virtual void EndDoc(void) {};
221 virtual void StartPage(void) {};
222 virtual void EndPage(void) {};
223
224 virtual void SetMapMode( int mode );
225 virtual int GetMapMode(void) const { return m_mappingMode; };
226
227 virtual void SetUserScale( double x, double y );
228 virtual void GetUserScale( double *x, double *y );
229 virtual void SetLogicalScale( double x, double y );
230 virtual void GetLogicalScale( double *x, double *y );
231
232 virtual void SetLogicalOrigin( long x, long y );
233 virtual void GetLogicalOrigin( long *x, long *y );
234 virtual void SetDeviceOrigin( long x, long y );
235 virtual void GetDeviceOrigin( long *x, long *y );
236 virtual void SetInternalDeviceOrigin( long x, long y );
237 virtual void GetInternalDeviceOrigin( long *x, long *y );
238
239 virtual void SetAxisOrientation( bool xLeftRight, bool yBottomUp );
240
241 virtual void SetOptimization( bool WXUNUSED(optimize) ) {};
242 virtual bool GetOptimization(void) { return m_optimize; };
243
244 virtual long DeviceToLogicalX(long x) const;
245 virtual long DeviceToLogicalY(long y) const;
246 virtual long DeviceToLogicalXRel(long x) const;
247 virtual long DeviceToLogicalYRel(long y) const;
248 virtual long LogicalToDeviceX(long x) const;
249 virtual long LogicalToDeviceY(long y) const;
250 virtual long LogicalToDeviceXRel(long x) const;
251 virtual long LogicalToDeviceYRel(long y) const;
252
253 public:
254
255 void CalcBoundingBox( long x, long y );
256 void ComputeScaleAndOrigin(void);
257
258 long XDEV2LOG(long x) const
259 {
260 long new_x = x - m_deviceOriginX;
261 if (new_x > 0)
262 return (long)((double)(new_x) / m_scaleX + 0.5) * m_signX + m_logicalOriginX;
263 else
264 return (long)((double)(new_x) / m_scaleX - 0.5) * m_signX + m_logicalOriginX;
265 }
266 long XDEV2LOGREL(long x) const
267 {
268 if (x > 0)
269 return (long)((double)(x) / m_scaleX + 0.5);
270 else
271 return (long)((double)(x) / m_scaleX - 0.5);
272 }
273 long YDEV2LOG(long y) const
274 {
275 long new_y = y - m_deviceOriginY;
276 if (new_y > 0)
277 return (long)((double)(new_y) / m_scaleY + 0.5) * m_signY + m_logicalOriginY;
278 else
279 return (long)((double)(new_y) / m_scaleY - 0.5) * m_signY + m_logicalOriginY;
280 }
281 long YDEV2LOGREL(long y) const
282 {
283 if (y > 0)
284 return (long)((double)(y) / m_scaleY + 0.5);
285 else
286 return (long)((double)(y) / m_scaleY - 0.5);
287 }
288 long XLOG2DEV(long x) const
289 {
290 long new_x = x - m_logicalOriginX;
291 if (new_x > 0)
292 return (long)((double)(new_x) * m_scaleX + 0.5) * m_signX + m_deviceOriginX;
293 else
294 return (long)((double)(new_x) * m_scaleX - 0.5) * m_signX + m_deviceOriginX;
295 }
296 long XLOG2DEVREL(long x) const
297 {
298 if (x > 0)
299 return (long)((double)(x) * m_scaleX + 0.5);
300 else
301 return (long)((double)(x) * m_scaleX - 0.5);
302 }
303 long YLOG2DEV(long y) const
304 {
305 long new_y = y - m_logicalOriginY;
306 if (new_y > 0)
307 return (long)((double)(new_y) * m_scaleY + 0.5) * m_signY + m_deviceOriginY;
308 else
309 return (long)((double)(new_y) * m_scaleY - 0.5) * m_signY + m_deviceOriginY;
310 }
311 long YLOG2DEVREL(long y) const
312 {
313 if (y > 0)
314 return (long)((double)(y) * m_scaleY + 0.5);
315 else
316 return (long)((double)(y) * m_scaleY - 0.5);
317 }
318
319 public:
320
321 bool m_ok;
322 bool m_colour;
323
324 // not sure, what these mean
325 bool m_clipping; // Is clipping on right now ?
326 bool m_isInteractive; // Is GetPixel possible ?
327 bool m_autoSetting; // wxMSW only ?
328 bool m_dontDelete; // wxMSW only ?
329 bool m_optimize; // wxMSW only ?
330 wxString m_filename; // Not sure where this belongs.
331
332 wxPen m_pen;
333 wxBrush m_brush;
334 wxBrush m_backgroundBrush;
335 wxColour m_textForegroundColour;
336 wxColour m_textBackgroundColour;
337 wxFont m_font;
338
339 int m_logicalFunction;
340 int m_backgroundMode;
341 int m_textAlignment; // gone in wxWin 2.0 ?
342
343 int m_mappingMode;
344
345 // not sure what for, but what is a mm on a screen you don't know the size of?
346 double m_mm_to_pix_x,m_mm_to_pix_y;
347
348 long m_internalDeviceOriginX,m_internalDeviceOriginY; // If un-scrolled is non-zero or
349 // d.o. changes with scrolling.
350 // Set using SetInternalDeviceOrigin().
351
352 long m_externalDeviceOriginX,m_externalDeviceOriginY; // To be set by external classes
353 // such as wxScrolledWindow
354 // using SetDeviceOrigin()
355
356 long m_deviceOriginX,m_deviceOriginY; // Sum of the two above.
357
358 long m_logicalOriginX,m_logicalOriginY; // User defined.
359
360 double m_scaleX,m_scaleY;
361 double m_logicalScaleX,m_logicalScaleY;
362 double m_userScaleX,m_userScaleY;
363 long m_signX,m_signY;
364
365 bool m_needComputeScaleX,m_needComputeScaleY; // not yet used
366
367 float m_scaleFactor; // wxPSDC wants to have this. Will disappear.
368
369 long m_clipX1,m_clipY1,m_clipX2,m_clipY2;
370 long m_minX,m_maxX,m_minY,m_maxY;
371};
372
373#endif
374 // _WX_DC_H_
wxWidgets (Impactor)