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1 | ///////////////////////////////////////////////////////////////////////////// |
2 | // Name: dc.cpp | |
3 | // Purpose: | |
4 | // Author: Robert Roebling | |
5 | // Created: 01/02/97 | |
6f65e337 | 6 | // RCS-ID: $Id$ |
c801d85f KB |
7 | // Copyright: (c) 1998 Robert Roebling, Julian Smart and Markus Holzem |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | ||
12 | #ifdef __GNUG__ | |
13 | #pragma implementation "dc.h" | |
14 | #endif | |
15 | ||
16 | #include "wx/dc.h" | |
17 | ||
18 | //----------------------------------------------------------------------------- | |
19 | // constants | |
20 | //----------------------------------------------------------------------------- | |
21 | ||
22 | #define mm2inches 0.0393700787402 | |
23 | #define inches2mm 25.4 | |
24 | #define mm2twips 56.6929133859 | |
25 | #define twips2mm 0.0176388888889 | |
26 | #define mm2pt 2.83464566929 | |
27 | #define pt2mm 0.352777777778 | |
28 | ||
29 | //----------------------------------------------------------------------------- | |
30 | // wxDC | |
31 | //----------------------------------------------------------------------------- | |
32 | ||
33 | IMPLEMENT_ABSTRACT_CLASS(wxDC,wxObject) | |
34 | ||
35 | wxDC::wxDC(void) | |
36 | { | |
37 | m_ok = FALSE; | |
38 | m_optimize = FALSE; | |
39 | m_autoSetting = FALSE; | |
40 | m_colour = TRUE; | |
41 | m_clipping = FALSE; | |
42 | ||
43 | m_mm_to_pix_x = 1.0; | |
44 | m_mm_to_pix_y = 1.0; | |
45 | ||
46 | m_logicalOriginX = 0; | |
47 | m_logicalOriginY = 0; | |
48 | m_deviceOriginX = 0; | |
49 | m_deviceOriginY = 0; | |
50 | m_internalDeviceOriginX = 0; | |
51 | m_internalDeviceOriginY = 0; | |
52 | m_externalDeviceOriginX = 0; | |
53 | m_externalDeviceOriginY = 0; | |
54 | ||
55 | m_logicalScaleX = 1.0; | |
56 | m_logicalScaleY = 1.0; | |
57 | m_userScaleX = 1.0; | |
58 | m_userScaleY = 1.0; | |
59 | m_scaleX = 1.0; | |
60 | m_scaleY = 1.0; | |
61 | ||
62 | m_mappingMode = MM_TEXT; | |
63 | m_needComputeScaleX = FALSE; | |
64 | m_needComputeScaleY = FALSE; | |
65 | ||
66 | m_signX = 1; // default x-axis left to right | |
67 | m_signY = 1; // default y-axis top down | |
68 | ||
69 | m_maxX = m_maxY = -100000; | |
70 | m_minY = m_minY = 100000; | |
71 | ||
72 | m_logicalFunction = wxCOPY; | |
73 | // m_textAlignment = wxALIGN_TOP_LEFT; | |
74 | m_backgroundMode = wxTRANSPARENT; | |
75 | ||
76 | m_textForegroundColour = *wxBLACK; | |
77 | m_textBackgroundColour = *wxWHITE; | |
78 | m_pen = *wxBLACK_PEN; | |
79 | m_font = *wxNORMAL_FONT; | |
80 | m_brush = *wxTRANSPARENT_BRUSH; | |
81 | m_backgroundBrush = *wxWHITE_BRUSH; | |
82 | ||
83 | // m_palette = wxAPP_COLOURMAP; | |
84 | }; | |
85 | ||
86 | wxDC::~wxDC(void) | |
87 | { | |
88 | }; | |
89 | ||
90 | void wxDC::DrawArc( long WXUNUSED(x1), long WXUNUSED(y1), long WXUNUSED(x2), long WXUNUSED(y2), | |
91 | double WXUNUSED(xc), double WXUNUSED(yc) ) | |
92 | { | |
93 | }; | |
94 | ||
95 | void wxDC::DrawIcon( const wxIcon &WXUNUSED(icon), long WXUNUSED(x), long WXUNUSED(y), bool WXUNUSED(useMask) ) | |
96 | { | |
97 | }; | |
98 | ||
99 | void wxDC::DrawPoint( wxPoint& point ) | |
100 | { | |
101 | DrawPoint( point.x, point.y ); | |
102 | }; | |
103 | ||
104 | void wxDC::DrawPolygon( wxList *list, long xoffset, long yoffset, int fillStyle ) | |
105 | { | |
106 | int n = list->Number(); | |
107 | wxPoint *points = new wxPoint[n]; | |
108 | ||
109 | int i = 0; | |
110 | for( wxNode *node = list->First(); node; node = node->Next() ) | |
111 | { | |
112 | wxPoint *point = (wxPoint *)node->Data(); | |
113 | points[i].x = point->x; | |
114 | points[i++].y = point->y; | |
115 | }; | |
116 | DrawPolygon( n, points, xoffset, yoffset, fillStyle ); | |
117 | delete[] points; | |
118 | }; | |
119 | ||
120 | void wxDC::DrawLines( wxList *list, long xoffset, long yoffset ) | |
121 | { | |
122 | int n = list->Number(); | |
123 | wxPoint *points = new wxPoint[n]; | |
124 | ||
125 | int i = 0; | |
126 | for( wxNode *node = list->First(); node; node = node->Next() ) | |
127 | { | |
128 | wxPoint *point = (wxPoint *)node->Data(); | |
129 | points[i].x = point->x; | |
130 | points[i++].y = point->y; | |
131 | }; | |
132 | DrawLines( n, points, xoffset, yoffset ); | |
133 | delete []points; | |
134 | }; | |
135 | ||
136 | void wxDC::DrawSpline( long x1, long y1, long x2, long y2, long x3, long y3 ) | |
137 | { | |
138 | wxList list; | |
c0392997 RR |
139 | list.Append( (wxObject*)new wxPoint(x1, y1) ); |
140 | list.Append( (wxObject*)new wxPoint(x2, y2) ); | |
141 | list.Append( (wxObject*)new wxPoint(x3, y3) ); | |
c801d85f | 142 | DrawSpline(&list); |
33d0b396 RR |
143 | wxNode *node = list.First(); |
144 | while (node) | |
145 | { | |
146 | wxPoint *p = (wxPoint*)node->Data(); | |
147 | delete p; | |
148 | node = node->Next(); | |
149 | }; | |
c801d85f KB |
150 | }; |
151 | ||
152 | void wxDC::DrawSpline( wxList *points ) | |
153 | { | |
154 | DrawOpenSpline( points ); | |
155 | }; | |
156 | ||
157 | void wxDC::DrawSpline( int n, wxPoint points[] ) | |
158 | { | |
159 | wxList list; | |
160 | for (int i = 0; i < n; i++) list.Append( (wxObject*)&points[i] ); | |
161 | DrawSpline( &list ); | |
162 | }; | |
163 | ||
164 | void wxDC::SetClippingRegion( long x, long y, long width, long height ) | |
165 | { | |
166 | m_clipping = TRUE; | |
167 | m_clipX1 = x; | |
168 | m_clipY1 = y; | |
169 | m_clipX2 = x + width; | |
170 | m_clipY2 = y + height; | |
171 | }; | |
172 | ||
173 | void wxDC::DestroyClippingRegion(void) | |
174 | { | |
175 | m_clipping = FALSE; | |
176 | }; | |
177 | ||
178 | void wxDC::GetClippingBox( long *x, long *y, long *width, long *height ) const | |
179 | { | |
180 | if (m_clipping) | |
181 | { | |
182 | if (x) *x = m_clipX1; | |
183 | if (y) *y = m_clipY1; | |
184 | if (width) *width = (m_clipX2 - m_clipX1); | |
185 | if (height) *height = (m_clipY2 - m_clipY1); | |
186 | } | |
187 | else | |
188 | *x = *y = *width = *height = 0; | |
189 | }; | |
190 | ||
191 | void wxDC::GetSize( int* width, int* height ) const | |
192 | { | |
193 | *width = m_maxX-m_minX; | |
194 | *height = m_maxY-m_minY; | |
195 | }; | |
196 | ||
197 | void wxDC::GetSizeMM( long* width, long* height ) const | |
198 | { | |
199 | int w = 0; | |
200 | int h = 0; | |
201 | GetSize( &w, &h ); | |
202 | *width = long( double(w) / (m_scaleX*m_mm_to_pix_x) ); | |
203 | *height = long( double(h) / (m_scaleY*m_mm_to_pix_y) ); | |
204 | }; | |
205 | ||
206 | void wxDC::SetTextForeground( const wxColour &col ) | |
207 | { | |
208 | if (!Ok()) return; | |
209 | m_textForegroundColour = col; | |
210 | }; | |
211 | ||
212 | void wxDC::SetTextBackground( const wxColour &col ) | |
213 | { | |
214 | if (!Ok()) return; | |
215 | m_textBackgroundColour = col; | |
216 | }; | |
217 | ||
218 | void wxDC::SetMapMode( int mode ) | |
219 | { | |
220 | switch (mode) | |
221 | { | |
222 | case MM_TWIPS: | |
223 | SetLogicalScale( twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y ); | |
224 | break; | |
225 | case MM_POINTS: | |
226 | SetLogicalScale( pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y ); | |
227 | break; | |
228 | case MM_METRIC: | |
229 | SetLogicalScale( m_mm_to_pix_x, m_mm_to_pix_y ); | |
230 | break; | |
231 | case MM_LOMETRIC: | |
232 | SetLogicalScale( m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0 ); | |
233 | break; | |
234 | default: | |
235 | case MM_TEXT: | |
236 | SetLogicalScale( 1.0, 1.0 ); | |
237 | break; | |
238 | }; | |
239 | if (mode != MM_TEXT) | |
240 | { | |
241 | m_needComputeScaleX = TRUE; | |
242 | m_needComputeScaleY = TRUE; | |
243 | }; | |
244 | }; | |
245 | ||
246 | void wxDC::SetUserScale( double x, double y ) | |
247 | { | |
248 | // allow negative ? -> no | |
249 | m_userScaleX = x; | |
250 | m_userScaleY = y; | |
251 | ComputeScaleAndOrigin(); | |
252 | }; | |
253 | ||
254 | void wxDC::GetUserScale( double *x, double *y ) | |
255 | { | |
256 | if (x) *x = m_userScaleX; | |
257 | if (y) *y = m_userScaleY; | |
258 | }; | |
259 | ||
260 | void wxDC::SetLogicalScale( double x, double y ) | |
261 | { | |
262 | // allow negative ? | |
263 | m_logicalScaleX = x; | |
264 | m_logicalScaleY = y; | |
265 | ComputeScaleAndOrigin(); | |
266 | }; | |
267 | ||
268 | void wxDC::GetLogicalScale( double *x, double *y ) | |
269 | { | |
270 | if (x) *x = m_logicalScaleX; | |
271 | if (y) *y = m_logicalScaleY; | |
272 | }; | |
273 | ||
274 | void wxDC::SetLogicalOrigin( long x, long y ) | |
275 | { | |
276 | m_logicalOriginX = x * m_signX; // is this still correct ? | |
277 | m_logicalOriginY = y * m_signY; | |
278 | ComputeScaleAndOrigin(); | |
279 | }; | |
280 | ||
281 | void wxDC::GetLogicalOrigin( long *x, long *y ) | |
282 | { | |
283 | if (x) *x = m_logicalOriginX; | |
284 | if (y) *y = m_logicalOriginY; | |
285 | }; | |
286 | ||
287 | void wxDC::SetDeviceOrigin( long x, long y ) | |
288 | { | |
289 | m_externalDeviceOriginX = x; | |
290 | m_externalDeviceOriginY = y; | |
291 | ComputeScaleAndOrigin(); | |
292 | }; | |
293 | ||
294 | void wxDC::GetDeviceOrigin( long *x, long *y ) | |
295 | { | |
d4c99d6f RR |
296 | // if (x) *x = m_externalDeviceOriginX; |
297 | // if (y) *y = m_externalDeviceOriginY; | |
298 | if (x) *x = m_deviceOriginX; | |
299 | if (y) *y = m_deviceOriginY; | |
c801d85f KB |
300 | }; |
301 | ||
302 | void wxDC::SetInternalDeviceOrigin( long x, long y ) | |
303 | { | |
304 | m_internalDeviceOriginX = x; | |
305 | m_internalDeviceOriginY = y; | |
306 | ComputeScaleAndOrigin(); | |
307 | }; | |
308 | ||
309 | void wxDC::GetInternalDeviceOrigin( long *x, long *y ) | |
310 | { | |
311 | if (x) *x = m_internalDeviceOriginX; | |
312 | if (y) *y = m_internalDeviceOriginY; | |
313 | }; | |
314 | ||
315 | void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) | |
316 | { | |
317 | m_signX = (xLeftRight ? 1 : -1); | |
318 | m_signY = (yBottomUp ? -1 : 1); | |
319 | ComputeScaleAndOrigin(); | |
320 | }; | |
321 | ||
322 | long wxDC::DeviceToLogicalX(long x) const | |
323 | { | |
324 | return XDEV2LOG(x); | |
325 | }; | |
326 | ||
327 | long wxDC::DeviceToLogicalY(long y) const | |
328 | { | |
329 | return YDEV2LOG(y); | |
330 | }; | |
331 | ||
332 | long wxDC::DeviceToLogicalXRel(long x) const | |
333 | { | |
334 | return XDEV2LOGREL(x); | |
335 | }; | |
336 | ||
337 | long wxDC::DeviceToLogicalYRel(long y) const | |
338 | { | |
339 | return YDEV2LOGREL(y); | |
340 | }; | |
341 | ||
342 | long wxDC::LogicalToDeviceX(long x) const | |
343 | { | |
344 | return XLOG2DEV(x); | |
345 | }; | |
346 | ||
347 | long wxDC::LogicalToDeviceY(long y) const | |
348 | { | |
349 | return YLOG2DEV(y); | |
350 | }; | |
351 | ||
352 | long wxDC::LogicalToDeviceXRel(long x) const | |
353 | { | |
354 | return XLOG2DEVREL(x); | |
355 | }; | |
356 | ||
357 | long wxDC::LogicalToDeviceYRel(long y) const | |
358 | { | |
359 | return YLOG2DEVREL(y); | |
360 | }; | |
361 | ||
362 | void wxDC::CalcBoundingBox( long x, long y ) | |
363 | { | |
364 | if (x < m_minX) m_minX = x; | |
365 | if (y < m_minY) m_minY = y; | |
366 | if (x > m_maxX) m_maxX = x; | |
367 | if (y > m_maxY) m_maxY = y; | |
368 | }; | |
369 | ||
370 | void wxDC::ComputeScaleAndOrigin(void) | |
371 | { | |
6f65e337 JS |
372 | // CMB: copy scale to see if it changes |
373 | double origScaleX = m_scaleX; | |
374 | double origScaleY = m_scaleY; | |
375 | ||
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376 | m_scaleX = m_logicalScaleX * m_userScaleX; |
377 | m_scaleY = m_logicalScaleY * m_userScaleY; | |
378 | ||
379 | m_deviceOriginX = m_internalDeviceOriginX + m_externalDeviceOriginX; | |
380 | m_deviceOriginY = m_internalDeviceOriginY + m_externalDeviceOriginY; | |
6f65e337 JS |
381 | |
382 | // CMB: if scale has changed call SetPen to recalulate the line width | |
383 | if (m_scaleX != origScaleX || m_scaleY != origScaleY) | |
384 | { | |
385 | // this is a bit artificial, but we need to force wxDC to think | |
386 | // the pen has changed | |
387 | wxPen* pen = GetPen(); | |
388 | wxPen tempPen; | |
389 | m_pen = tempPen; | |
390 | SetPen(pen); | |
391 | } | |
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392 | }; |
393 |