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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/common/graphcmn.cpp | |
3 | // Purpose: graphics context methods common to all platforms | |
4 | // Author: Stefan Csomor | |
5 | // Modified by: | |
6 | // Created: | |
7 | // Copyright: (c) Stefan Csomor | |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | // For compilers that support precompilation, includes "wx.h". | |
12 | #include "wx/wxprec.h" | |
13 | ||
14 | #if defined(__BORLANDC__) | |
15 | #pragma hdrstop | |
16 | #endif | |
17 | ||
18 | #if wxUSE_GRAPHICS_CONTEXT | |
19 | ||
20 | #include "wx/graphics.h" | |
21 | ||
22 | #ifndef WX_PRECOMP | |
23 | #include "wx/icon.h" | |
24 | #include "wx/bitmap.h" | |
25 | #include "wx/dcmemory.h" | |
26 | #include "wx/region.h" | |
27 | #include "wx/log.h" | |
28 | #endif | |
29 | ||
30 | #include "wx/private/graphics.h" | |
31 | ||
32 | //----------------------------------------------------------------------------- | |
33 | // Local functions | |
34 | //----------------------------------------------------------------------------- | |
35 | ||
36 | static inline double DegToRad(double deg) | |
37 | { | |
38 | return (deg * M_PI) / 180.0; | |
39 | } | |
40 | ||
41 | //----------------------------------------------------------------------------- | |
42 | ||
43 | //----------------------------------------------------------------------------- | |
44 | // wxGraphicsObject | |
45 | //----------------------------------------------------------------------------- | |
46 | ||
47 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsObject, wxObject) | |
48 | ||
49 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ) | |
50 | { | |
51 | m_renderer = renderer; | |
52 | } | |
53 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ) | |
54 | { | |
55 | m_renderer = data->m_renderer; | |
56 | } | |
57 | wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const | |
58 | { | |
59 | return m_renderer ; | |
60 | } | |
61 | ||
62 | wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const | |
63 | { | |
64 | return new wxGraphicsObjectRefData(this); | |
65 | } | |
66 | ||
67 | wxGraphicsObject::wxGraphicsObject() | |
68 | { | |
69 | } | |
70 | ||
71 | wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) | |
72 | { | |
73 | SetRefData( new wxGraphicsObjectRefData(renderer)); | |
74 | } | |
75 | ||
76 | wxGraphicsObject::~wxGraphicsObject() | |
77 | { | |
78 | } | |
79 | ||
80 | bool wxGraphicsObject::IsNull() const | |
81 | { | |
82 | return m_refData == NULL; | |
83 | } | |
84 | ||
85 | wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const | |
86 | { | |
87 | return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); | |
88 | } | |
89 | ||
90 | wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const | |
91 | { | |
92 | return (wxGraphicsObjectRefData*) m_refData; | |
93 | } | |
94 | ||
95 | wxObjectRefData* wxGraphicsObject::CreateRefData() const | |
96 | { | |
97 | wxLogDebug(wxT("A Null Object cannot be changed")); | |
98 | return NULL; | |
99 | } | |
100 | ||
101 | wxObjectRefData* wxGraphicsObject::CloneRefData(const wxObjectRefData* data) const | |
102 | { | |
103 | const wxGraphicsObjectRefData* ptr = (const wxGraphicsObjectRefData*) data; | |
104 | return ptr->Clone(); | |
105 | } | |
106 | ||
107 | //----------------------------------------------------------------------------- | |
108 | // pens etc. | |
109 | //----------------------------------------------------------------------------- | |
110 | ||
111 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPen, wxGraphicsObject) | |
112 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBrush, wxGraphicsObject) | |
113 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsFont, wxGraphicsObject) | |
114 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBitmap, wxGraphicsObject) | |
115 | ||
116 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; | |
117 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; | |
118 | WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; | |
119 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; | |
120 | ||
121 | //----------------------------------------------------------------------------- | |
122 | // matrix | |
123 | //----------------------------------------------------------------------------- | |
124 | ||
125 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsMatrix, wxGraphicsObject) | |
126 | WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; | |
127 | ||
128 | // concatenates the matrix | |
129 | void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t ) | |
130 | { | |
131 | AllocExclusive(); | |
132 | GetMatrixData()->Concat(t->GetMatrixData()); | |
133 | } | |
134 | ||
135 | // sets the matrix to the respective values | |
136 | void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, | |
137 | wxDouble tx, wxDouble ty) | |
138 | { | |
139 | AllocExclusive(); | |
140 | GetMatrixData()->Set(a,b,c,d,tx,ty); | |
141 | } | |
142 | ||
143 | // gets the component valuess of the matrix | |
144 | void wxGraphicsMatrix::Get(wxDouble* a, wxDouble* b, wxDouble* c, | |
145 | wxDouble* d, wxDouble* tx, wxDouble* ty) const | |
146 | { | |
147 | GetMatrixData()->Get(a, b, c, d, tx, ty); | |
148 | } | |
149 | ||
150 | // makes this the inverse matrix | |
151 | void wxGraphicsMatrix::Invert() | |
152 | { | |
153 | AllocExclusive(); | |
154 | GetMatrixData()->Invert(); | |
155 | } | |
156 | ||
157 | // returns true if the elements of the transformation matrix are equal ? | |
158 | bool wxGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const | |
159 | { | |
160 | return GetMatrixData()->IsEqual(t->GetMatrixData()); | |
161 | } | |
162 | ||
163 | // return true if this is the identity matrix | |
164 | bool wxGraphicsMatrix::IsIdentity() const | |
165 | { | |
166 | return GetMatrixData()->IsIdentity(); | |
167 | } | |
168 | ||
169 | // add the translation to this matrix | |
170 | void wxGraphicsMatrix::Translate( wxDouble dx , wxDouble dy ) | |
171 | { | |
172 | AllocExclusive(); | |
173 | GetMatrixData()->Translate(dx,dy); | |
174 | } | |
175 | ||
176 | // add the scale to this matrix | |
177 | void wxGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale ) | |
178 | { | |
179 | AllocExclusive(); | |
180 | GetMatrixData()->Scale(xScale,yScale); | |
181 | } | |
182 | ||
183 | // add the rotation to this matrix (radians) | |
184 | void wxGraphicsMatrix::Rotate( wxDouble angle ) | |
185 | { | |
186 | AllocExclusive(); | |
187 | GetMatrixData()->Rotate(angle); | |
188 | } | |
189 | ||
190 | // | |
191 | // apply the transforms | |
192 | // | |
193 | ||
194 | // applies that matrix to the point | |
195 | void wxGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y ) const | |
196 | { | |
197 | GetMatrixData()->TransformPoint(x,y); | |
198 | } | |
199 | ||
200 | // applies the matrix except for translations | |
201 | void wxGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy ) const | |
202 | { | |
203 | GetMatrixData()->TransformDistance(dx,dy); | |
204 | } | |
205 | ||
206 | // returns the native representation | |
207 | void * wxGraphicsMatrix::GetNativeMatrix() const | |
208 | { | |
209 | return GetMatrixData()->GetNativeMatrix(); | |
210 | } | |
211 | ||
212 | //----------------------------------------------------------------------------- | |
213 | // path | |
214 | //----------------------------------------------------------------------------- | |
215 | ||
216 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPath, wxGraphicsObject) | |
217 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; | |
218 | ||
219 | // convenience functions, for using wxPoint2DDouble etc | |
220 | ||
221 | wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() const | |
222 | { | |
223 | wxDouble x,y; | |
224 | GetCurrentPoint(&x,&y); | |
225 | return wxPoint2DDouble(x,y); | |
226 | } | |
227 | ||
228 | void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) | |
229 | { | |
230 | MoveToPoint( p.m_x , p.m_y); | |
231 | } | |
232 | ||
233 | void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) | |
234 | { | |
235 | AddLineToPoint( p.m_x , p.m_y); | |
236 | } | |
237 | ||
238 | void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) | |
239 | { | |
240 | AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); | |
241 | } | |
242 | ||
243 | void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) | |
244 | { | |
245 | AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); | |
246 | } | |
247 | ||
248 | wxRect2DDouble wxGraphicsPath::GetBox() const | |
249 | { | |
250 | wxDouble x,y,w,h; | |
251 | GetBox(&x,&y,&w,&h); | |
252 | return wxRect2DDouble( x,y,w,h ); | |
253 | } | |
254 | ||
255 | bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle ) const | |
256 | { | |
257 | return Contains( c.m_x, c.m_y, fillStyle); | |
258 | } | |
259 | ||
260 | // true redirections | |
261 | ||
262 | // begins a new subpath at (x,y) | |
263 | void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y ) | |
264 | { | |
265 | AllocExclusive(); | |
266 | GetPathData()->MoveToPoint(x,y); | |
267 | } | |
268 | ||
269 | // adds a straight line from the current point to (x,y) | |
270 | void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y ) | |
271 | { | |
272 | AllocExclusive(); | |
273 | GetPathData()->AddLineToPoint(x,y); | |
274 | } | |
275 | ||
276 | // adds a cubic Bezier curve from the current point, using two control points and an end point | |
277 | void wxGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) | |
278 | { | |
279 | AllocExclusive(); | |
280 | GetPathData()->AddCurveToPoint(cx1,cy1,cx2,cy2,x,y); | |
281 | } | |
282 | ||
283 | // adds another path | |
284 | void wxGraphicsPath::AddPath( const wxGraphicsPath& path ) | |
285 | { | |
286 | AllocExclusive(); | |
287 | GetPathData()->AddPath(path.GetPathData()); | |
288 | } | |
289 | ||
290 | // closes the current sub-path | |
291 | void wxGraphicsPath::CloseSubpath() | |
292 | { | |
293 | AllocExclusive(); | |
294 | GetPathData()->CloseSubpath(); | |
295 | } | |
296 | ||
297 | // gets the last point of the current path, (0,0) if not yet set | |
298 | void wxGraphicsPath::GetCurrentPoint( wxDouble* x, wxDouble* y) const | |
299 | { | |
300 | GetPathData()->GetCurrentPoint(x,y); | |
301 | } | |
302 | ||
303 | // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle | |
304 | void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) | |
305 | { | |
306 | AllocExclusive(); | |
307 | GetPathData()->AddArc(x,y,r,startAngle,endAngle,clockwise); | |
308 | } | |
309 | ||
310 | // | |
311 | // These are convenience functions which - if not available natively will be assembled | |
312 | // using the primitives from above | |
313 | // | |
314 | ||
315 | // adds a quadratic Bezier curve from the current point, using a control point and an end point | |
316 | void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) | |
317 | { | |
318 | AllocExclusive(); | |
319 | GetPathData()->AddQuadCurveToPoint(cx,cy,x,y); | |
320 | } | |
321 | ||
322 | // appends a rectangle as a new closed subpath | |
323 | void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) | |
324 | { | |
325 | AllocExclusive(); | |
326 | GetPathData()->AddRectangle(x,y,w,h); | |
327 | } | |
328 | ||
329 | // appends an ellipsis as a new closed subpath fitting the passed rectangle | |
330 | void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) | |
331 | { | |
332 | AllocExclusive(); | |
333 | GetPathData()->AddCircle(x,y,r); | |
334 | } | |
335 | ||
336 | // appends a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1) | |
337 | void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) | |
338 | { | |
339 | GetPathData()->AddArcToPoint(x1,y1,x2,y2,r); | |
340 | } | |
341 | ||
342 | // appends an ellipse | |
343 | void wxGraphicsPath::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
344 | { | |
345 | AllocExclusive(); | |
346 | GetPathData()->AddEllipse(x,y,w,h); | |
347 | } | |
348 | ||
349 | // appends a rounded rectangle | |
350 | void wxGraphicsPath::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
351 | { | |
352 | AllocExclusive(); | |
353 | GetPathData()->AddRoundedRectangle(x,y,w,h,radius); | |
354 | } | |
355 | ||
356 | // returns the native path | |
357 | void * wxGraphicsPath::GetNativePath() const | |
358 | { | |
359 | return GetPathData()->GetNativePath(); | |
360 | } | |
361 | ||
362 | // give the native path returned by GetNativePath() back (there might be some deallocations necessary) | |
363 | void wxGraphicsPath::UnGetNativePath(void *p)const | |
364 | { | |
365 | GetPathData()->UnGetNativePath(p); | |
366 | } | |
367 | ||
368 | // transforms each point of this path by the matrix | |
369 | void wxGraphicsPath::Transform( const wxGraphicsMatrix& matrix ) | |
370 | { | |
371 | AllocExclusive(); | |
372 | GetPathData()->Transform(matrix.GetMatrixData()); | |
373 | } | |
374 | ||
375 | // gets the bounding box enclosing all points (possibly including control points) | |
376 | void wxGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const | |
377 | { | |
378 | GetPathData()->GetBox(x,y,w,h); | |
379 | } | |
380 | ||
381 | bool wxGraphicsPath::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const | |
382 | { | |
383 | return GetPathData()->Contains(x,y,fillStyle); | |
384 | } | |
385 | ||
386 | // | |
387 | // Emulations, these mus be implemented in the ...Data classes in order to allow for proper overrides | |
388 | // | |
389 | ||
390 | void wxGraphicsPathData::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) | |
391 | { | |
392 | // calculate using degree elevation to a cubic bezier | |
393 | wxPoint2DDouble c1; | |
394 | wxPoint2DDouble c2; | |
395 | ||
396 | wxPoint2DDouble start; | |
397 | GetCurrentPoint(&start.m_x,&start.m_y); | |
398 | wxPoint2DDouble end(x,y); | |
399 | wxPoint2DDouble c(cx,cy); | |
400 | c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; | |
401 | c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; | |
402 | AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); | |
403 | } | |
404 | ||
405 | void wxGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) | |
406 | { | |
407 | MoveToPoint(x,y); | |
408 | AddLineToPoint(x,y+h); | |
409 | AddLineToPoint(x+w,y+h); | |
410 | AddLineToPoint(x+w,y); | |
411 | CloseSubpath(); | |
412 | } | |
413 | ||
414 | void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r ) | |
415 | { | |
416 | MoveToPoint(x+r,y); | |
417 | AddArc( x,y,r,0,2*M_PI,false); | |
418 | CloseSubpath(); | |
419 | } | |
420 | ||
421 | void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
422 | { | |
423 | if (w <= 0. || h <= 0.) | |
424 | return; | |
425 | ||
426 | wxDouble rw = w/2; | |
427 | wxDouble rh = h/2; | |
428 | wxDouble xc = x + rw; | |
429 | wxDouble yc = y + rh; | |
430 | wxGraphicsMatrix m = GetRenderer()->CreateMatrix(); | |
431 | m.Translate(xc,yc); | |
432 | m.Scale(rw/rh,1.0); | |
433 | wxGraphicsPath p = GetRenderer()->CreatePath(); | |
434 | p.AddCircle(0,0,rh); | |
435 | p.Transform(m); | |
436 | AddPath(p.GetPathData()); | |
437 | } | |
438 | ||
439 | void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
440 | { | |
441 | if ( radius == 0 ) | |
442 | AddRectangle(x,y,w,h); | |
443 | else | |
444 | { | |
445 | MoveToPoint( x + w, y + h / 2); | |
446 | AddArcToPoint(x + w, y + h, x + w / 2, y + h, radius); | |
447 | AddArcToPoint(x, y + h, x, y + h / 2, radius); | |
448 | AddArcToPoint(x, y , x + w / 2, y, radius); | |
449 | AddArcToPoint(x + w, y, x + w, y + h / 2, radius); | |
450 | CloseSubpath(); | |
451 | } | |
452 | } | |
453 | ||
454 | // draws a an arc to two tangents connecting (current) to (x1,y1) and (x1,y1) to (x2,y2), also a straight line from (current) to (x1,y1) | |
455 | void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) | |
456 | { | |
457 | wxPoint2DDouble current; | |
458 | GetCurrentPoint(¤t.m_x,¤t.m_y); | |
459 | wxPoint2DDouble p1(x1,y1); | |
460 | wxPoint2DDouble p2(x2,y2); | |
461 | ||
462 | wxPoint2DDouble v1 = current - p1; | |
463 | v1.Normalize(); | |
464 | wxPoint2DDouble v2 = p2 - p1; | |
465 | v2.Normalize(); | |
466 | ||
467 | wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); | |
468 | ||
469 | if ( alpha < 0 ) | |
470 | alpha = 360 + alpha; | |
471 | // TODO obtuse angles | |
472 | ||
473 | alpha = DegToRad(alpha); | |
474 | ||
475 | wxDouble dist = r / sin(alpha/2) * cos(alpha/2); | |
476 | // calculate tangential points | |
477 | wxPoint2DDouble t1 = dist*v1 + p1; | |
478 | ||
479 | wxPoint2DDouble nv1 = v1; | |
480 | nv1.SetVectorAngle(v1.GetVectorAngle()-90); | |
481 | wxPoint2DDouble c = t1 + r*nv1; | |
482 | ||
483 | wxDouble a1 = v1.GetVectorAngle()+90; | |
484 | wxDouble a2 = v2.GetVectorAngle()-90; | |
485 | ||
486 | AddLineToPoint(t1.m_x,t1.m_y); | |
487 | AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); | |
488 | AddLineToPoint(p2.m_x,p2.m_y); | |
489 | } | |
490 | ||
491 | //----------------------------------------------------------------------------- | |
492 | // wxGraphicsGradientStops | |
493 | //----------------------------------------------------------------------------- | |
494 | ||
495 | void wxGraphicsGradientStops::Add(const wxGraphicsGradientStop& stop) | |
496 | { | |
497 | for ( wxVector<wxGraphicsGradientStop>::iterator it = m_stops.begin(); | |
498 | it != m_stops.end(); | |
499 | ++it ) | |
500 | { | |
501 | if ( stop.GetPosition() < it->GetPosition() ) | |
502 | { | |
503 | if ( it != m_stops.begin() ) | |
504 | { | |
505 | m_stops.insert(it, stop); | |
506 | } | |
507 | else // we shouldn't be inserting it at the beginning | |
508 | { | |
509 | wxFAIL_MSG( "invalid gradient stop position < 0" ); | |
510 | } | |
511 | ||
512 | return; | |
513 | } | |
514 | } | |
515 | ||
516 | if ( stop.GetPosition() == 1. ) | |
517 | { | |
518 | m_stops.insert(m_stops.end() - 1, stop); | |
519 | } | |
520 | else | |
521 | { | |
522 | wxFAIL_MSG( "invalid gradient stop position > 1" ); | |
523 | } | |
524 | } | |
525 | ||
526 | void * wxGraphicsBitmap::GetNativeBitmap() const | |
527 | { | |
528 | return GetBitmapData()->GetNativeBitmap(); | |
529 | } | |
530 | ||
531 | //----------------------------------------------------------------------------- | |
532 | // wxGraphicsContext Convenience Methods | |
533 | //----------------------------------------------------------------------------- | |
534 | ||
535 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject) | |
536 | ||
537 | ||
538 | wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : | |
539 | wxGraphicsObject(renderer), | |
540 | m_antialias(wxANTIALIAS_DEFAULT), | |
541 | m_composition(wxCOMPOSITION_OVER), | |
542 | m_enableOffset(false) | |
543 | { | |
544 | } | |
545 | ||
546 | wxGraphicsContext::~wxGraphicsContext() | |
547 | { | |
548 | } | |
549 | ||
550 | bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) | |
551 | { | |
552 | return true; | |
553 | } | |
554 | ||
555 | void wxGraphicsContext::EndDoc() | |
556 | { | |
557 | } | |
558 | ||
559 | void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width), | |
560 | wxDouble WXUNUSED(height)) | |
561 | { | |
562 | } | |
563 | ||
564 | void wxGraphicsContext::EndPage() | |
565 | { | |
566 | } | |
567 | ||
568 | void wxGraphicsContext::Flush() | |
569 | { | |
570 | } | |
571 | ||
572 | void wxGraphicsContext::EnableOffset(bool enable) | |
573 | { | |
574 | m_enableOffset = enable; | |
575 | } | |
576 | ||
577 | #if 0 | |
578 | void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) ) | |
579 | { | |
580 | } | |
581 | ||
582 | wxDouble wxGraphicsContext::GetAlpha() const | |
583 | { | |
584 | return 1.0; | |
585 | } | |
586 | #endif | |
587 | ||
588 | void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) | |
589 | { | |
590 | *dpiX = 72.0; | |
591 | *dpiY = 72.0; | |
592 | } | |
593 | ||
594 | // sets the pen | |
595 | void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) | |
596 | { | |
597 | m_pen = pen; | |
598 | } | |
599 | ||
600 | void wxGraphicsContext::SetPen( const wxPen& pen ) | |
601 | { | |
602 | if ( !pen.IsOk() || pen.GetStyle() == wxPENSTYLE_TRANSPARENT ) | |
603 | SetPen( wxNullGraphicsPen ); | |
604 | else | |
605 | SetPen( CreatePen( pen ) ); | |
606 | } | |
607 | ||
608 | // sets the brush for filling | |
609 | void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) | |
610 | { | |
611 | m_brush = brush; | |
612 | } | |
613 | ||
614 | void wxGraphicsContext::SetBrush( const wxBrush& brush ) | |
615 | { | |
616 | if ( !brush.IsOk() || brush.GetStyle() == wxBRUSHSTYLE_TRANSPARENT ) | |
617 | SetBrush( wxNullGraphicsBrush ); | |
618 | else | |
619 | SetBrush( CreateBrush( brush ) ); | |
620 | } | |
621 | ||
622 | // sets the brush for filling | |
623 | void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) | |
624 | { | |
625 | m_font = font; | |
626 | } | |
627 | ||
628 | void wxGraphicsContext::SetFont( const wxFont& font, const wxColour& colour ) | |
629 | { | |
630 | if ( font.IsOk() ) | |
631 | SetFont( CreateFont( font, colour ) ); | |
632 | else | |
633 | SetFont( wxNullGraphicsFont ); | |
634 | } | |
635 | ||
636 | void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle ) | |
637 | { | |
638 | FillPath( path , fillStyle ); | |
639 | StrokePath( path ); | |
640 | } | |
641 | ||
642 | void | |
643 | wxGraphicsContext::DoDrawRotatedText(const wxString &str, | |
644 | wxDouble x, | |
645 | wxDouble y, | |
646 | wxDouble angle) | |
647 | { | |
648 | Translate(x,y); | |
649 | Rotate( -angle ); | |
650 | DrawText( str , 0, 0 ); | |
651 | Rotate( angle ); | |
652 | Translate(-x,-y); | |
653 | } | |
654 | ||
655 | void | |
656 | wxGraphicsContext::DoDrawFilledText(const wxString &str, | |
657 | wxDouble x, | |
658 | wxDouble y, | |
659 | const wxGraphicsBrush& backgroundBrush) | |
660 | { | |
661 | wxGraphicsBrush formerBrush = m_brush; | |
662 | wxGraphicsPen formerPen = m_pen; | |
663 | wxDouble width; | |
664 | wxDouble height; | |
665 | wxDouble descent; | |
666 | wxDouble externalLeading; | |
667 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); | |
668 | SetBrush( backgroundBrush ); | |
669 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape | |
670 | SetPen( wxNullGraphicsPen ); | |
671 | ||
672 | DrawRectangle(x , y, width, height); | |
673 | ||
674 | DrawText( str, x ,y); | |
675 | SetBrush( formerBrush ); | |
676 | SetPen( formerPen ); | |
677 | } | |
678 | ||
679 | void | |
680 | wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str, | |
681 | wxDouble x, wxDouble y, | |
682 | wxDouble angle, | |
683 | const wxGraphicsBrush& backgroundBrush) | |
684 | { | |
685 | wxGraphicsBrush formerBrush = m_brush; | |
686 | wxGraphicsPen formerPen = m_pen; | |
687 | ||
688 | wxDouble width; | |
689 | wxDouble height; | |
690 | wxDouble descent; | |
691 | wxDouble externalLeading; | |
692 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); | |
693 | SetBrush( backgroundBrush ); | |
694 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape | |
695 | SetPen( wxNullGraphicsPen ); | |
696 | ||
697 | wxGraphicsPath path = CreatePath(); | |
698 | path.MoveToPoint( x , y ); | |
699 | path.AddLineToPoint( (int) (x + sin(angle) * height) , (int) (y + cos(angle) * height) ); | |
700 | path.AddLineToPoint( | |
701 | (int) (x + sin(angle) * height + cos(angle) * width) , | |
702 | (int) (y + cos(angle) * height - sin(angle) * width)); | |
703 | path.AddLineToPoint((int) (x + cos(angle) * width) , (int) (y - sin(angle) * width) ); | |
704 | FillPath( path ); | |
705 | DrawText( str, x ,y, angle); | |
706 | SetBrush( formerBrush ); | |
707 | SetPen( formerPen ); | |
708 | } | |
709 | ||
710 | void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) | |
711 | { | |
712 | wxGraphicsPath path = CreatePath(); | |
713 | path.MoveToPoint(x1, y1); | |
714 | path.AddLineToPoint( x2, y2 ); | |
715 | StrokePath( path ); | |
716 | } | |
717 | ||
718 | void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
719 | { | |
720 | wxGraphicsPath path = CreatePath(); | |
721 | path.AddRectangle( x , y , w , h ); | |
722 | DrawPath( path ); | |
723 | } | |
724 | ||
725 | void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
726 | { | |
727 | wxGraphicsPath path = CreatePath(); | |
728 | path.AddEllipse(x,y,w,h); | |
729 | DrawPath(path); | |
730 | } | |
731 | ||
732 | void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
733 | { | |
734 | wxGraphicsPath path = CreatePath(); | |
735 | path.AddRoundedRectangle(x,y,w,h,radius); | |
736 | DrawPath(path); | |
737 | } | |
738 | ||
739 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) | |
740 | { | |
741 | wxASSERT(n > 1); | |
742 | wxGraphicsPath path = CreatePath(); | |
743 | path.MoveToPoint(points[0].m_x, points[0].m_y); | |
744 | for ( size_t i = 1; i < n; ++i) | |
745 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); | |
746 | StrokePath( path ); | |
747 | } | |
748 | ||
749 | void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle) | |
750 | { | |
751 | wxASSERT(n > 1); | |
752 | wxGraphicsPath path = CreatePath(); | |
753 | path.MoveToPoint(points[0].m_x, points[0].m_y); | |
754 | for ( size_t i = 1; i < n; ++i) | |
755 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); | |
756 | DrawPath( path , fillStyle); | |
757 | } | |
758 | ||
759 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) | |
760 | { | |
761 | wxASSERT(n > 0); | |
762 | wxGraphicsPath path = CreatePath(); | |
763 | for ( size_t i = 0; i < n; ++i) | |
764 | { | |
765 | path.MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); | |
766 | path.AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); | |
767 | } | |
768 | StrokePath( path ); | |
769 | } | |
770 | ||
771 | // create a 'native' matrix corresponding to these values | |
772 | wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, | |
773 | wxDouble tx, wxDouble ty) const | |
774 | { | |
775 | return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty); | |
776 | } | |
777 | ||
778 | wxGraphicsPath wxGraphicsContext::CreatePath() const | |
779 | { | |
780 | return GetRenderer()->CreatePath(); | |
781 | } | |
782 | ||
783 | wxGraphicsPen wxGraphicsContext::CreatePen(const wxPen& pen) const | |
784 | { | |
785 | return GetRenderer()->CreatePen(pen); | |
786 | } | |
787 | ||
788 | wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const | |
789 | { | |
790 | return GetRenderer()->CreateBrush(brush); | |
791 | } | |
792 | ||
793 | wxGraphicsBrush | |
794 | wxGraphicsContext::CreateLinearGradientBrush( | |
795 | wxDouble x1, wxDouble y1, | |
796 | wxDouble x2, wxDouble y2, | |
797 | const wxColour& c1, const wxColour& c2) const | |
798 | { | |
799 | return GetRenderer()->CreateLinearGradientBrush | |
800 | ( | |
801 | x1, y1, | |
802 | x2, y2, | |
803 | wxGraphicsGradientStops(c1,c2) | |
804 | ); | |
805 | } | |
806 | ||
807 | wxGraphicsBrush | |
808 | wxGraphicsContext::CreateLinearGradientBrush( | |
809 | wxDouble x1, wxDouble y1, | |
810 | wxDouble x2, wxDouble y2, | |
811 | const wxGraphicsGradientStops& gradientStops) const | |
812 | { | |
813 | return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2, gradientStops); | |
814 | } | |
815 | ||
816 | wxGraphicsBrush | |
817 | wxGraphicsContext::CreateRadialGradientBrush( | |
818 | wxDouble xo, wxDouble yo, | |
819 | wxDouble xc, wxDouble yc, wxDouble radius, | |
820 | const wxColour &oColor, const wxColour &cColor) const | |
821 | { | |
822 | return GetRenderer()->CreateRadialGradientBrush | |
823 | ( | |
824 | xo, yo, | |
825 | xc, yc, radius, | |
826 | wxGraphicsGradientStops(oColor, cColor) | |
827 | ); | |
828 | } | |
829 | ||
830 | wxGraphicsBrush | |
831 | wxGraphicsContext::CreateRadialGradientBrush( | |
832 | wxDouble xo, wxDouble yo, | |
833 | wxDouble xc, wxDouble yc, wxDouble radius, | |
834 | const wxGraphicsGradientStops& gradientStops) const | |
835 | { | |
836 | return GetRenderer()->CreateRadialGradientBrush | |
837 | ( | |
838 | xo, yo, | |
839 | xc, yc, radius, | |
840 | gradientStops | |
841 | ); | |
842 | } | |
843 | ||
844 | wxGraphicsFont wxGraphicsContext::CreateFont( const wxFont &font , const wxColour &col ) const | |
845 | { | |
846 | return GetRenderer()->CreateFont(font,col); | |
847 | } | |
848 | ||
849 | wxGraphicsFont | |
850 | wxGraphicsContext::CreateFont(double size, | |
851 | const wxString& facename, | |
852 | int flags, | |
853 | const wxColour& col) const | |
854 | { | |
855 | return GetRenderer()->CreateFont(size, facename, flags, col); | |
856 | } | |
857 | ||
858 | wxGraphicsBitmap wxGraphicsContext::CreateBitmap( const wxBitmap& bmp ) const | |
859 | { | |
860 | return GetRenderer()->CreateBitmap(bmp); | |
861 | } | |
862 | ||
863 | #if wxUSE_IMAGE | |
864 | wxGraphicsBitmap wxGraphicsContext::CreateBitmapFromImage(const wxImage& image) const | |
865 | { | |
866 | return GetRenderer()->CreateBitmapFromImage(image); | |
867 | } | |
868 | #endif // wxUSE_IMAGE | |
869 | ||
870 | wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const | |
871 | { | |
872 | return GetRenderer()->CreateSubBitmap(bmp,x,y,w,h); | |
873 | } | |
874 | ||
875 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) | |
876 | { | |
877 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
878 | } | |
879 | ||
880 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) | |
881 | { | |
882 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
883 | } | |
884 | ||
885 | #if wxUSE_PRINTING_ARCHITECTURE | |
886 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) | |
887 | { | |
888 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
889 | } | |
890 | #endif | |
891 | ||
892 | #ifdef __WXMSW__ | |
893 | #if wxUSE_ENH_METAFILE | |
894 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxEnhMetaFileDC& dc) | |
895 | { | |
896 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
897 | } | |
898 | #endif | |
899 | #endif | |
900 | ||
901 | wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context ) | |
902 | { | |
903 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeContext(context); | |
904 | } | |
905 | ||
906 | wxGraphicsContext* wxGraphicsContext::CreateFromNativeWindow( void * window ) | |
907 | { | |
908 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeWindow(window); | |
909 | } | |
910 | ||
911 | wxGraphicsContext* wxGraphicsContext::Create( wxWindow* window ) | |
912 | { | |
913 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(window); | |
914 | } | |
915 | ||
916 | #if wxUSE_IMAGE | |
917 | /* static */ wxGraphicsContext* wxGraphicsContext::Create(wxImage& image) | |
918 | { | |
919 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromImage(image); | |
920 | } | |
921 | #endif // wxUSE_IMAGE | |
922 | ||
923 | wxGraphicsContext* wxGraphicsContext::Create() | |
924 | { | |
925 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateMeasuringContext(); | |
926 | } | |
927 | ||
928 | //----------------------------------------------------------------------------- | |
929 | // wxGraphicsRenderer | |
930 | //----------------------------------------------------------------------------- | |
931 | ||
932 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsRenderer, wxObject) | |
933 | ||
934 | #endif // wxUSE_GRAPHICS_CONTEXT |