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1/////////////////////////////////////////////////////////////////////////////
2// Name: dc.cpp
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3// Purpose: wxDC class
4// Author: AUTHOR
5// Modified by:
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6// Created: 01/02/97
7// RCS-ID: $Id$
01b2eeec 8// Copyright: (c) AUTHOR
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9// Licence: wxWindows licence
10/////////////////////////////////////////////////////////////////////////////
11
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12#ifdef __GNUG__
13#pragma implementation "dc.h"
14#endif
15
16#include "wx/dc.h"
17
01b2eeec 18IMPLEMENT_ABSTRACT_CLASS(wxDC, wxObject)
01b2eeec 19
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20//-----------------------------------------------------------------------------
21// constants
22//-----------------------------------------------------------------------------
23
24#define mm2inches 0.0393700787402
25#define inches2mm 25.4
26#define mm2twips 56.6929133859
27#define twips2mm 0.0176388888889
28#define mm2pt 2.83464566929
29#define pt2mm 0.352777777778
30
31//-----------------------------------------------------------------------------
32// wxDC
33//-----------------------------------------------------------------------------
34
35IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject)
36
37wxDC::wxDC(void)
38{
39 m_ok = FALSE;
40 m_optimize = FALSE;
41 m_autoSetting = FALSE;
42 m_colour = TRUE;
43 m_clipping = FALSE;
44
45 m_mm_to_pix_x = 1.0;
46 m_mm_to_pix_y = 1.0;
47
48 m_logicalOriginX = 0;
49 m_logicalOriginY = 0;
50 m_deviceOriginX = 0;
51 m_deviceOriginY = 0;
52 m_internalDeviceOriginX = 0;
53 m_internalDeviceOriginY = 0;
54 m_externalDeviceOriginX = 0;
55 m_externalDeviceOriginY = 0;
56
57 m_logicalScaleX = 1.0;
58 m_logicalScaleY = 1.0;
59 m_userScaleX = 1.0;
60 m_userScaleY = 1.0;
61 m_scaleX = 1.0;
62 m_scaleY = 1.0;
63
e3065973 64 m_mappingMode = wxMM_TEXT;
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65 m_needComputeScaleX = FALSE;
66 m_needComputeScaleY = FALSE;
67
68 m_signX = 1; // default x-axis left to right
69 m_signY = 1; // default y-axis top down
70
71 m_maxX = m_maxY = -100000;
72 m_minY = m_minY = 100000;
73
74 m_logicalFunction = wxCOPY;
75// m_textAlignment = wxALIGN_TOP_LEFT;
76 m_backgroundMode = wxTRANSPARENT;
77
78 m_textForegroundColour = *wxBLACK;
79 m_textBackgroundColour = *wxWHITE;
80 m_pen = *wxBLACK_PEN;
81 m_font = *wxNORMAL_FONT;
82 m_brush = *wxTRANSPARENT_BRUSH;
83 m_backgroundBrush = *wxWHITE_BRUSH;
84
85// m_palette = wxAPP_COLOURMAP;
86};
87
88wxDC::~wxDC(void)
89{
90};
91
01b2eeec 92void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) )
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93{
94};
95
96void wxDC::DrawPoint( wxPoint& point )
97{
98 DrawPoint( point.x, point.y );
99};
100
101void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle )
102{
103 int n = list->Number();
104 wxPoint *points = new wxPoint[n];
105
106 int i = 0;
107 for( wxNode *node = list->First(); node; node = node->Next() )
108 {
109 wxPoint *point = (wxPoint *)node->Data();
110 points[i].x = point->x;
111 points[i++].y = point->y;
112 };
113 DrawPolygon( n, points, xoffset, yoffset, fillStyle );
114 delete[] points;
115};
116
117void wxDC::DrawLines( wxList *list, long xoffset, long yoffset )
118{
119 int n = list->Number();
120 wxPoint *points = new wxPoint[n];
121
122 int i = 0;
123 for( wxNode *node = list->First(); node; node = node->Next() )
124 {
125 wxPoint *point = (wxPoint *)node->Data();
126 points[i].x = point->x;
127 points[i++].y = point->y;
128 };
129 DrawLines( n, points, xoffset, yoffset );
130 delete []points;
131};
132
133void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 )
134{
135 wxList list;
136 list.Append( (wxObject*)new wxPoint(x1, y1) );
137 list.Append( (wxObject*)new wxPoint(x2, y2) );
138 list.Append( (wxObject*)new wxPoint(x3, y3) );
139 DrawSpline(&list);
140 wxNode *node = list.First();
141 while (node)
142 {
143 wxPoint *p = (wxPoint*)node->Data();
144 delete p;
145 node = node->Next();
146 };
147};
148
149void wxDC::DrawSpline( wxList *points )
150{
151 DrawOpenSpline( points );
152};
153
154void wxDC::DrawSpline( int n, wxPoint points[] )
155{
156 wxList list;
157 for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] );
158 DrawSpline( &list );
159};
160
161void wxDC::SetClippingRegion( long x, long y, long width, long height )
162{
163 m_clipping = TRUE;
164 m_clipX1 = x;
165 m_clipY1 = y;
166 m_clipX2 = x + width;
167 m_clipY2 = y + height;
168};
169
170void wxDC::DestroyClippingRegion(void)
171{
172 m_clipping = FALSE;
173};
174
175void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const
176{
177 if (m_clipping)
178 {
179 if (x) *x = m_clipX1;
180 if (y) *y = m_clipY1;
181 if (width) *width = (m_clipX2 - m_clipX1);
182 if (height) *height = (m_clipY2 - m_clipY1);
183 }
184 else
185 *x = *y = *width = *height = 0;
186};
187
188void wxDC::GetSize( int* width, int* height ) const
189{
190 *width = m_maxX-m_minX;
191 *height = m_maxY-m_minY;
192};
193
194void wxDC::GetSizeMM( long* width, long* height ) const
195{
196 int w = 0;
197 int h = 0;
198 GetSize( &w, &h );
199 *width = long( double(w) / (m_scaleX*m_mm_to_pix_x) );
200 *height = long( double(h) / (m_scaleY*m_mm_to_pix_y) );
201};
202
203void wxDC::SetTextForeground( const wxColour &col )
204{
205 if (!Ok()) return;
206 m_textForegroundColour = col;
207};
208
209void wxDC::SetTextBackground( const wxColour &col )
210{
211 if (!Ok()) return;
212 m_textBackgroundColour = col;
213};
214
215void wxDC::SetMapMode( int mode )
216{
217 switch (mode)
218 {
e3065973 219 case wxMM_TWIPS:
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220 SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y );
221 break;
e3065973 222 case wxMM_POINTS:
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223 SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y );
224 break;
e3065973 225 case wxMM_METRIC:
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226 SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y );
227 break;
e3065973 228 case wxMM_LOMETRIC:
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229 SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 );
230 break;
231 default:
e3065973 232 case wxMM_TEXT:
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233 SetLogicalScale( 1.0, 1.0 );
234 break;
235 };
e3065973 236 if (mode != wxMM_TEXT)
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237 {
238 m_needComputeScaleX = TRUE;
239 m_needComputeScaleY = TRUE;
240 };
241};
242
243void wxDC::SetUserScale( double x, double y )
244{
245 // allow negative ? -> no
246 m_userScaleX = x;
247 m_userScaleY = y;
248 ComputeScaleAndOrigin();
249};
250
251void wxDC::GetUserScale( double *x, double *y )
252{
253 if (x) *x = m_userScaleX;
254 if (y) *y = m_userScaleY;
255};
256
257void wxDC::SetLogicalScale( double x, double y )
258{
259 // allow negative ?
260 m_logicalScaleX = x;
261 m_logicalScaleY = y;
262 ComputeScaleAndOrigin();
263};
264
265void wxDC::GetLogicalScale( double *x, double *y )
266{
267 if (x) *x = m_logicalScaleX;
268 if (y) *y = m_logicalScaleY;
269};
270
271void wxDC::SetLogicalOrigin( long x, long y )
272{
273 m_logicalOriginX = x * m_signX; // is this still correct ?
274 m_logicalOriginY = y * m_signY;
275 ComputeScaleAndOrigin();
276};
277
278void wxDC::GetLogicalOrigin( long *x, long *y )
279{
280 if (x) *x = m_logicalOriginX;
281 if (y) *y = m_logicalOriginY;
282};
283
284void wxDC::SetDeviceOrigin( long x, long y )
285{
286 m_externalDeviceOriginX = x;
287 m_externalDeviceOriginY = y;
288 ComputeScaleAndOrigin();
289};
290
291void wxDC::GetDeviceOrigin( long *x, long *y )
292{
293// if (x) *x = m_externalDeviceOriginX;
294// if (y) *y = m_externalDeviceOriginY;
295 if (x) *x = m_deviceOriginX;
296 if (y) *y = m_deviceOriginY;
297};
298
299void wxDC::SetInternalDeviceOrigin( long x, long y )
300{
301 m_internalDeviceOriginX = x;
302 m_internalDeviceOriginY = y;
303 ComputeScaleAndOrigin();
304};
305
306void wxDC::GetInternalDeviceOrigin( long *x, long *y )
307{
308 if (x) *x = m_internalDeviceOriginX;
309 if (y) *y = m_internalDeviceOriginY;
310};
311
312void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp )
313{
314 m_signX = (xLeftRight ? 1 : -1);
315 m_signY = (yBottomUp ? -1 : 1);
316 ComputeScaleAndOrigin();
317};
318
319long wxDC::DeviceToLogicalX(long x) const
320{
321 return XDEV2LOG(x);
322};
323
324long wxDC::DeviceToLogicalY(long y) const
325{
326 return YDEV2LOG(y);
327};
328
329long wxDC::DeviceToLogicalXRel(long x) const
330{
331 return XDEV2LOGREL(x);
332};
333
334long wxDC::DeviceToLogicalYRel(long y) const
335{
336 return YDEV2LOGREL(y);
337};
338
339long wxDC::LogicalToDeviceX(long x) const
340{
341 return XLOG2DEV(x);
342};
343
344long wxDC::LogicalToDeviceY(long y) const
345{
346 return YLOG2DEV(y);
347};
348
349long wxDC::LogicalToDeviceXRel(long x) const
350{
351 return XLOG2DEVREL(x);
352};
353
354long wxDC::LogicalToDeviceYRel(long y) const
355{
356 return YLOG2DEVREL(y);
357};
358
359void wxDC::CalcBoundingBox( long x, long y )
360{
361 if (x < m_minX) m_minX = x;
362 if (y < m_minY) m_minY = y;
363 if (x > m_maxX) m_maxX = x;
364 if (y > m_maxY) m_maxY = y;
365};
366
367void wxDC::ComputeScaleAndOrigin(void)
368{
369 // CMB: copy scale to see if it changes
370 double origScaleX = m_scaleX;
371 double origScaleY = m_scaleY;
372
373 m_scaleX = m_logicalScaleX * m_userScaleX;
374 m_scaleY = m_logicalScaleY * m_userScaleY;
375
376 m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX;
377 m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY;
378
379 // CMB: if scale has changed call SetPen to recalulate the line width
380 if (m_scaleX != origScaleX || m_scaleY != origScaleY)
381 {
382 // this is a bit artificial, but we need to force wxDC to think
383 // the pen has changed
384 wxPen* pen = GetPen();
385 wxPen tempPen;
386 m_pen = tempPen;
387 SetPen(pen);
388 }
389};
390