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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 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) Stefan Csomor | |
9 | // Licence: wxWindows licence | |
10 | ///////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // For compilers that support precompilation, includes "wx.h". | |
13 | #include "wx/wxprec.h" | |
14 | ||
15 | #if defined(__BORLANDC__) | |
16 | #pragma hdrstop | |
17 | #endif | |
18 | ||
19 | #if wxUSE_GRAPHICS_CONTEXT | |
20 | ||
21 | #include "wx/private/graphics.h" | |
22 | ||
23 | #ifndef WX_PRECOMP | |
24 | #include "wx/icon.h" | |
25 | #include "wx/bitmap.h" | |
26 | #include "wx/dcmemory.h" | |
27 | #include "wx/region.h" | |
28 | #include "wx/log.h" | |
29 | #endif | |
30 | ||
31 | //----------------------------------------------------------------------------- | |
32 | // constants | |
33 | //----------------------------------------------------------------------------- | |
34 | ||
35 | static const double RAD2DEG = 180.0 / M_PI; | |
36 | ||
37 | //----------------------------------------------------------------------------- | |
38 | // Local functions | |
39 | //----------------------------------------------------------------------------- | |
40 | ||
41 | static inline double DegToRad(double deg) | |
42 | { | |
43 | return (deg * M_PI) / 180.0; | |
44 | } | |
45 | ||
46 | //----------------------------------------------------------------------------- | |
47 | ||
48 | //----------------------------------------------------------------------------- | |
49 | // wxGraphicsObject | |
50 | //----------------------------------------------------------------------------- | |
51 | ||
52 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsObject, wxObject) | |
53 | ||
54 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( wxGraphicsRenderer* renderer ) | |
55 | { | |
56 | m_renderer = renderer; | |
57 | } | |
58 | wxGraphicsObjectRefData::wxGraphicsObjectRefData( const wxGraphicsObjectRefData* data ) | |
59 | { | |
60 | m_renderer = data->m_renderer; | |
61 | } | |
62 | wxGraphicsRenderer* wxGraphicsObjectRefData::GetRenderer() const | |
63 | { | |
64 | return m_renderer ; | |
65 | } | |
66 | ||
67 | wxGraphicsObjectRefData* wxGraphicsObjectRefData::Clone() const | |
68 | { | |
69 | return new wxGraphicsObjectRefData(this); | |
70 | } | |
71 | ||
72 | wxGraphicsObject::wxGraphicsObject() | |
73 | { | |
74 | } | |
75 | ||
76 | wxGraphicsObject::wxGraphicsObject( wxGraphicsRenderer* renderer ) | |
77 | { | |
78 | SetRefData( new wxGraphicsObjectRefData(renderer)); | |
79 | } | |
80 | ||
81 | wxGraphicsObject::~wxGraphicsObject() | |
82 | { | |
83 | } | |
84 | ||
85 | bool wxGraphicsObject::IsNull() const | |
86 | { | |
87 | return m_refData == NULL; | |
88 | } | |
89 | ||
90 | wxGraphicsRenderer* wxGraphicsObject::GetRenderer() const | |
91 | { | |
92 | return ( IsNull() ? NULL : GetGraphicsData()->GetRenderer() ); | |
93 | } | |
94 | ||
95 | wxGraphicsObjectRefData* wxGraphicsObject::GetGraphicsData() const | |
96 | { | |
97 | return (wxGraphicsObjectRefData*) m_refData; | |
98 | } | |
99 | ||
100 | wxObjectRefData* wxGraphicsObject::CreateRefData() const | |
101 | { | |
102 | wxLogDebug(wxT("A Null Object cannot be changed")); | |
103 | return NULL; | |
104 | } | |
105 | ||
106 | wxObjectRefData* wxGraphicsObject::CloneRefData(const wxObjectRefData* data) const | |
107 | { | |
108 | const wxGraphicsObjectRefData* ptr = (const wxGraphicsObjectRefData*) data; | |
109 | return ptr->Clone(); | |
110 | } | |
111 | ||
112 | //----------------------------------------------------------------------------- | |
113 | // pens etc. | |
114 | //----------------------------------------------------------------------------- | |
115 | ||
116 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPen, wxGraphicsObject) | |
117 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBrush, wxGraphicsObject) | |
118 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsFont, wxGraphicsObject) | |
119 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsBitmap, wxGraphicsObject) | |
120 | ||
121 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPen) wxNullGraphicsPen; | |
122 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBrush) wxNullGraphicsBrush; | |
123 | WXDLLIMPEXP_DATA_CORE(wxGraphicsFont) wxNullGraphicsFont; | |
124 | WXDLLIMPEXP_DATA_CORE(wxGraphicsBitmap) wxNullGraphicsBitmap; | |
125 | ||
126 | //----------------------------------------------------------------------------- | |
127 | // matrix | |
128 | //----------------------------------------------------------------------------- | |
129 | ||
130 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsMatrix, wxGraphicsObject) | |
131 | WXDLLIMPEXP_DATA_CORE(wxGraphicsMatrix) wxNullGraphicsMatrix; | |
132 | ||
133 | // concatenates the matrix | |
134 | void wxGraphicsMatrix::Concat( const wxGraphicsMatrix *t ) | |
135 | { | |
136 | AllocExclusive(); | |
137 | GetMatrixData()->Concat(t->GetMatrixData()); | |
138 | } | |
139 | ||
140 | // sets the matrix to the respective values | |
141 | void wxGraphicsMatrix::Set(wxDouble a, wxDouble b, wxDouble c, wxDouble d, | |
142 | wxDouble tx, wxDouble ty) | |
143 | { | |
144 | AllocExclusive(); | |
145 | GetMatrixData()->Set(a,b,c,d,tx,ty); | |
146 | } | |
147 | ||
148 | // gets the component valuess of the matrix | |
149 | void wxGraphicsMatrix::Get(wxDouble* a, wxDouble* b, wxDouble* c, | |
150 | wxDouble* d, wxDouble* tx, wxDouble* ty) const | |
151 | { | |
152 | GetMatrixData()->Get(a, b, c, d, tx, ty); | |
153 | } | |
154 | ||
155 | // makes this the inverse matrix | |
156 | void wxGraphicsMatrix::Invert() | |
157 | { | |
158 | AllocExclusive(); | |
159 | GetMatrixData()->Invert(); | |
160 | } | |
161 | ||
162 | // returns true if the elements of the transformation matrix are equal ? | |
163 | bool wxGraphicsMatrix::IsEqual( const wxGraphicsMatrix* t) const | |
164 | { | |
165 | return GetMatrixData()->IsEqual(t->GetMatrixData()); | |
166 | } | |
167 | ||
168 | // return true if this is the identity matrix | |
169 | bool wxGraphicsMatrix::IsIdentity() const | |
170 | { | |
171 | return GetMatrixData()->IsIdentity(); | |
172 | } | |
173 | ||
174 | // add the translation to this matrix | |
175 | void wxGraphicsMatrix::Translate( wxDouble dx , wxDouble dy ) | |
176 | { | |
177 | AllocExclusive(); | |
178 | GetMatrixData()->Translate(dx,dy); | |
179 | } | |
180 | ||
181 | // add the scale to this matrix | |
182 | void wxGraphicsMatrix::Scale( wxDouble xScale , wxDouble yScale ) | |
183 | { | |
184 | AllocExclusive(); | |
185 | GetMatrixData()->Scale(xScale,yScale); | |
186 | } | |
187 | ||
188 | // add the rotation to this matrix (radians) | |
189 | void wxGraphicsMatrix::Rotate( wxDouble angle ) | |
190 | { | |
191 | AllocExclusive(); | |
192 | GetMatrixData()->Rotate(angle); | |
193 | } | |
194 | ||
195 | // | |
196 | // apply the transforms | |
197 | // | |
198 | ||
199 | // applies that matrix to the point | |
200 | void wxGraphicsMatrix::TransformPoint( wxDouble *x, wxDouble *y ) const | |
201 | { | |
202 | GetMatrixData()->TransformPoint(x,y); | |
203 | } | |
204 | ||
205 | // applies the matrix except for translations | |
206 | void wxGraphicsMatrix::TransformDistance( wxDouble *dx, wxDouble *dy ) const | |
207 | { | |
208 | GetMatrixData()->TransformDistance(dx,dy); | |
209 | } | |
210 | ||
211 | // returns the native representation | |
212 | void * wxGraphicsMatrix::GetNativeMatrix() const | |
213 | { | |
214 | return GetMatrixData()->GetNativeMatrix(); | |
215 | } | |
216 | ||
217 | //----------------------------------------------------------------------------- | |
218 | // path | |
219 | //----------------------------------------------------------------------------- | |
220 | ||
221 | IMPLEMENT_DYNAMIC_CLASS(wxGraphicsPath, wxGraphicsObject) | |
222 | WXDLLIMPEXP_DATA_CORE(wxGraphicsPath) wxNullGraphicsPath; | |
223 | ||
224 | // convenience functions, for using wxPoint2DDouble etc | |
225 | ||
226 | wxPoint2DDouble wxGraphicsPath::GetCurrentPoint() const | |
227 | { | |
228 | wxDouble x,y; | |
229 | GetCurrentPoint(&x,&y); | |
230 | return wxPoint2DDouble(x,y); | |
231 | } | |
232 | ||
233 | void wxGraphicsPath::MoveToPoint( const wxPoint2DDouble& p) | |
234 | { | |
235 | MoveToPoint( p.m_x , p.m_y); | |
236 | } | |
237 | ||
238 | void wxGraphicsPath::AddLineToPoint( const wxPoint2DDouble& p) | |
239 | { | |
240 | AddLineToPoint( p.m_x , p.m_y); | |
241 | } | |
242 | ||
243 | void wxGraphicsPath::AddCurveToPoint( const wxPoint2DDouble& c1, const wxPoint2DDouble& c2, const wxPoint2DDouble& e) | |
244 | { | |
245 | AddCurveToPoint(c1.m_x, c1.m_y, c2.m_x, c2.m_y, e.m_x, e.m_y); | |
246 | } | |
247 | ||
248 | void wxGraphicsPath::AddArc( const wxPoint2DDouble& c, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise) | |
249 | { | |
250 | AddArc(c.m_x, c.m_y, r, startAngle, endAngle, clockwise); | |
251 | } | |
252 | ||
253 | wxRect2DDouble wxGraphicsPath::GetBox() const | |
254 | { | |
255 | wxDouble x,y,w,h; | |
256 | GetBox(&x,&y,&w,&h); | |
257 | return wxRect2DDouble( x,y,w,h ); | |
258 | } | |
259 | ||
260 | bool wxGraphicsPath::Contains( const wxPoint2DDouble& c, wxPolygonFillMode fillStyle ) const | |
261 | { | |
262 | return Contains( c.m_x, c.m_y, fillStyle); | |
263 | } | |
264 | ||
265 | // true redirections | |
266 | ||
267 | // begins a new subpath at (x,y) | |
268 | void wxGraphicsPath::MoveToPoint( wxDouble x, wxDouble y ) | |
269 | { | |
270 | AllocExclusive(); | |
271 | GetPathData()->MoveToPoint(x,y); | |
272 | } | |
273 | ||
274 | // adds a straight line from the current point to (x,y) | |
275 | void wxGraphicsPath::AddLineToPoint( wxDouble x, wxDouble y ) | |
276 | { | |
277 | AllocExclusive(); | |
278 | GetPathData()->AddLineToPoint(x,y); | |
279 | } | |
280 | ||
281 | // adds a cubic Bezier curve from the current point, using two control points and an end point | |
282 | void wxGraphicsPath::AddCurveToPoint( wxDouble cx1, wxDouble cy1, wxDouble cx2, wxDouble cy2, wxDouble x, wxDouble y ) | |
283 | { | |
284 | AllocExclusive(); | |
285 | GetPathData()->AddCurveToPoint(cx1,cy1,cx2,cy2,x,y); | |
286 | } | |
287 | ||
288 | // adds another path | |
289 | void wxGraphicsPath::AddPath( const wxGraphicsPath& path ) | |
290 | { | |
291 | AllocExclusive(); | |
292 | GetPathData()->AddPath(path.GetPathData()); | |
293 | } | |
294 | ||
295 | // closes the current sub-path | |
296 | void wxGraphicsPath::CloseSubpath() | |
297 | { | |
298 | AllocExclusive(); | |
299 | GetPathData()->CloseSubpath(); | |
300 | } | |
301 | ||
302 | // gets the last point of the current path, (0,0) if not yet set | |
303 | void wxGraphicsPath::GetCurrentPoint( wxDouble* x, wxDouble* y) const | |
304 | { | |
305 | GetPathData()->GetCurrentPoint(x,y); | |
306 | } | |
307 | ||
308 | // adds an arc of a circle centering at (x,y) with radius (r) from startAngle to endAngle | |
309 | void wxGraphicsPath::AddArc( wxDouble x, wxDouble y, wxDouble r, wxDouble startAngle, wxDouble endAngle, bool clockwise ) | |
310 | { | |
311 | AllocExclusive(); | |
312 | GetPathData()->AddArc(x,y,r,startAngle,endAngle,clockwise); | |
313 | } | |
314 | ||
315 | // | |
316 | // These are convenience functions which - if not available natively will be assembled | |
317 | // using the primitives from above | |
318 | // | |
319 | ||
320 | // adds a quadratic Bezier curve from the current point, using a control point and an end point | |
321 | void wxGraphicsPath::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) | |
322 | { | |
323 | AllocExclusive(); | |
324 | GetPathData()->AddQuadCurveToPoint(cx,cy,x,y); | |
325 | } | |
326 | ||
327 | // appends a rectangle as a new closed subpath | |
328 | void wxGraphicsPath::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) | |
329 | { | |
330 | AllocExclusive(); | |
331 | GetPathData()->AddRectangle(x,y,w,h); | |
332 | } | |
333 | ||
334 | // appends an ellipsis as a new closed subpath fitting the passed rectangle | |
335 | void wxGraphicsPath::AddCircle( wxDouble x, wxDouble y, wxDouble r ) | |
336 | { | |
337 | AllocExclusive(); | |
338 | GetPathData()->AddCircle(x,y,r); | |
339 | } | |
340 | ||
341 | // 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) | |
342 | void wxGraphicsPath::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) | |
343 | { | |
344 | GetPathData()->AddArcToPoint(x1,y1,x2,y2,r); | |
345 | } | |
346 | ||
347 | // appends an ellipse | |
348 | void wxGraphicsPath::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
349 | { | |
350 | AllocExclusive(); | |
351 | GetPathData()->AddEllipse(x,y,w,h); | |
352 | } | |
353 | ||
354 | // appends a rounded rectangle | |
355 | void wxGraphicsPath::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
356 | { | |
357 | AllocExclusive(); | |
358 | GetPathData()->AddRoundedRectangle(x,y,w,h,radius); | |
359 | } | |
360 | ||
361 | // returns the native path | |
362 | void * wxGraphicsPath::GetNativePath() const | |
363 | { | |
364 | return GetPathData()->GetNativePath(); | |
365 | } | |
366 | ||
367 | // give the native path returned by GetNativePath() back (there might be some deallocations necessary) | |
368 | void wxGraphicsPath::UnGetNativePath(void *p)const | |
369 | { | |
370 | GetPathData()->UnGetNativePath(p); | |
371 | } | |
372 | ||
373 | // transforms each point of this path by the matrix | |
374 | void wxGraphicsPath::Transform( const wxGraphicsMatrix& matrix ) | |
375 | { | |
376 | AllocExclusive(); | |
377 | GetPathData()->Transform(matrix.GetMatrixData()); | |
378 | } | |
379 | ||
380 | // gets the bounding box enclosing all points (possibly including control points) | |
381 | void wxGraphicsPath::GetBox(wxDouble *x, wxDouble *y, wxDouble *w, wxDouble *h) const | |
382 | { | |
383 | GetPathData()->GetBox(x,y,w,h); | |
384 | } | |
385 | ||
386 | bool wxGraphicsPath::Contains( wxDouble x, wxDouble y, wxPolygonFillMode fillStyle ) const | |
387 | { | |
388 | return GetPathData()->Contains(x,y,fillStyle); | |
389 | } | |
390 | ||
391 | // | |
392 | // Emulations, these mus be implemented in the ...Data classes in order to allow for proper overrides | |
393 | // | |
394 | ||
395 | void wxGraphicsPathData::AddQuadCurveToPoint( wxDouble cx, wxDouble cy, wxDouble x, wxDouble y ) | |
396 | { | |
397 | // calculate using degree elevation to a cubic bezier | |
398 | wxPoint2DDouble c1; | |
399 | wxPoint2DDouble c2; | |
400 | ||
401 | wxPoint2DDouble start; | |
402 | GetCurrentPoint(&start.m_x,&start.m_y); | |
403 | wxPoint2DDouble end(x,y); | |
404 | wxPoint2DDouble c(cx,cy); | |
405 | c1 = wxDouble(1/3.0) * start + wxDouble(2/3.0) * c; | |
406 | c2 = wxDouble(2/3.0) * c + wxDouble(1/3.0) * end; | |
407 | AddCurveToPoint(c1.m_x,c1.m_y,c2.m_x,c2.m_y,x,y); | |
408 | } | |
409 | ||
410 | void wxGraphicsPathData::AddRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h ) | |
411 | { | |
412 | MoveToPoint(x,y); | |
413 | AddLineToPoint(x,y+h); | |
414 | AddLineToPoint(x+w,y+h); | |
415 | AddLineToPoint(x+w,y); | |
416 | CloseSubpath(); | |
417 | } | |
418 | ||
419 | void wxGraphicsPathData::AddCircle( wxDouble x, wxDouble y, wxDouble r ) | |
420 | { | |
421 | MoveToPoint(x+r,y); | |
422 | AddArc( x,y,r,0,2*M_PI,false); | |
423 | CloseSubpath(); | |
424 | } | |
425 | ||
426 | void wxGraphicsPathData::AddEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
427 | { | |
428 | if (w <= 0. || h <= 0.) | |
429 | return; | |
430 | ||
431 | wxDouble rw = w/2; | |
432 | wxDouble rh = h/2; | |
433 | wxDouble xc = x + rw; | |
434 | wxDouble yc = y + rh; | |
435 | wxGraphicsMatrix m = GetRenderer()->CreateMatrix(); | |
436 | m.Translate(xc,yc); | |
437 | m.Scale(rw/rh,1.0); | |
438 | wxGraphicsPath p = GetRenderer()->CreatePath(); | |
439 | p.AddCircle(0,0,rh); | |
440 | p.Transform(m); | |
441 | AddPath(p.GetPathData()); | |
442 | } | |
443 | ||
444 | void wxGraphicsPathData::AddRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
445 | { | |
446 | if ( radius == 0 ) | |
447 | AddRectangle(x,y,w,h); | |
448 | else | |
449 | { | |
450 | MoveToPoint( x + w, y + h / 2); | |
451 | AddArcToPoint(x + w, y + h, x + w / 2, y + h, radius); | |
452 | AddArcToPoint(x, y + h, x, y + h / 2, radius); | |
453 | AddArcToPoint(x, y , x + w / 2, y, radius); | |
454 | AddArcToPoint(x + w, y, x + w, y + h / 2, radius); | |
455 | CloseSubpath(); | |
456 | } | |
457 | } | |
458 | ||
459 | // 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) | |
460 | void wxGraphicsPathData::AddArcToPoint( wxDouble x1, wxDouble y1 , wxDouble x2, wxDouble y2, wxDouble r ) | |
461 | { | |
462 | wxPoint2DDouble current; | |
463 | GetCurrentPoint(¤t.m_x,¤t.m_y); | |
464 | wxPoint2DDouble p1(x1,y1); | |
465 | wxPoint2DDouble p2(x2,y2); | |
466 | ||
467 | wxPoint2DDouble v1 = current - p1; | |
468 | v1.Normalize(); | |
469 | wxPoint2DDouble v2 = p2 - p1; | |
470 | v2.Normalize(); | |
471 | ||
472 | wxDouble alpha = v1.GetVectorAngle() - v2.GetVectorAngle(); | |
473 | ||
474 | if ( alpha < 0 ) | |
475 | alpha = 360 + alpha; | |
476 | // TODO obtuse angles | |
477 | ||
478 | alpha = DegToRad(alpha); | |
479 | ||
480 | wxDouble dist = r / sin(alpha/2) * cos(alpha/2); | |
481 | // calculate tangential points | |
482 | wxPoint2DDouble t1 = dist*v1 + p1; | |
483 | wxPoint2DDouble t2 = dist*v2 + p1; | |
484 | ||
485 | wxPoint2DDouble nv1 = v1; | |
486 | nv1.SetVectorAngle(v1.GetVectorAngle()-90); | |
487 | wxPoint2DDouble c = t1 + r*nv1; | |
488 | ||
489 | wxDouble a1 = v1.GetVectorAngle()+90; | |
490 | wxDouble a2 = v2.GetVectorAngle()-90; | |
491 | ||
492 | AddLineToPoint(t1.m_x,t1.m_y); | |
493 | AddArc(c.m_x,c.m_y,r,DegToRad(a1),DegToRad(a2),true); | |
494 | AddLineToPoint(p2.m_x,p2.m_y); | |
495 | } | |
496 | ||
497 | //----------------------------------------------------------------------------- | |
498 | // wxGraphicsContext Convenience Methods | |
499 | //----------------------------------------------------------------------------- | |
500 | ||
501 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsContext, wxObject) | |
502 | ||
503 | ||
504 | wxGraphicsContext::wxGraphicsContext(wxGraphicsRenderer* renderer) : | |
505 | wxGraphicsObject(renderer), | |
506 | m_antialias(wxANTIALIAS_DEFAULT), | |
507 | m_composition(wxCOMPOSITION_OVER) | |
508 | { | |
509 | } | |
510 | ||
511 | wxGraphicsContext::~wxGraphicsContext() | |
512 | { | |
513 | } | |
514 | ||
515 | bool wxGraphicsContext::StartDoc(const wxString& WXUNUSED(message)) | |
516 | { | |
517 | return true; | |
518 | } | |
519 | ||
520 | void wxGraphicsContext::EndDoc() | |
521 | { | |
522 | } | |
523 | ||
524 | void wxGraphicsContext::StartPage(wxDouble WXUNUSED(width), | |
525 | wxDouble WXUNUSED(height)) | |
526 | { | |
527 | } | |
528 | ||
529 | void wxGraphicsContext::EndPage() | |
530 | { | |
531 | } | |
532 | ||
533 | void wxGraphicsContext::Flush() | |
534 | { | |
535 | } | |
536 | ||
537 | #if 0 | |
538 | void wxGraphicsContext::SetAlpha( wxDouble WXUNUSED(alpha) ) | |
539 | { | |
540 | } | |
541 | ||
542 | wxDouble wxGraphicsContext::GetAlpha() const | |
543 | { | |
544 | return 1.0; | |
545 | } | |
546 | #endif | |
547 | ||
548 | void wxGraphicsContext::GetSize( wxDouble* width, wxDouble* height) | |
549 | { | |
550 | *width = 10000.0; | |
551 | *height = 10000.0; | |
552 | } | |
553 | ||
554 | void wxGraphicsContext::GetDPI( wxDouble* dpiX, wxDouble* dpiY) | |
555 | { | |
556 | *dpiX = 72.0; | |
557 | *dpiY = 72.0; | |
558 | } | |
559 | ||
560 | // sets the pen | |
561 | void wxGraphicsContext::SetPen( const wxGraphicsPen& pen ) | |
562 | { | |
563 | m_pen = pen; | |
564 | } | |
565 | ||
566 | void wxGraphicsContext::SetPen( const wxPen& pen ) | |
567 | { | |
568 | if ( !pen.Ok() || pen.GetStyle() == wxTRANSPARENT ) | |
569 | SetPen( wxNullGraphicsPen ); | |
570 | else | |
571 | SetPen( CreatePen( pen ) ); | |
572 | } | |
573 | ||
574 | // sets the brush for filling | |
575 | void wxGraphicsContext::SetBrush( const wxGraphicsBrush& brush ) | |
576 | { | |
577 | m_brush = brush; | |
578 | } | |
579 | ||
580 | void wxGraphicsContext::SetBrush( const wxBrush& brush ) | |
581 | { | |
582 | if ( !brush.Ok() || brush.GetStyle() == wxTRANSPARENT ) | |
583 | SetBrush( wxNullGraphicsBrush ); | |
584 | else | |
585 | SetBrush( CreateBrush( brush ) ); | |
586 | } | |
587 | ||
588 | // sets the brush for filling | |
589 | void wxGraphicsContext::SetFont( const wxGraphicsFont& font ) | |
590 | { | |
591 | m_font = font; | |
592 | } | |
593 | ||
594 | void wxGraphicsContext::SetFont( const wxFont& font, const wxColour& colour ) | |
595 | { | |
596 | if ( font.Ok() ) | |
597 | SetFont( CreateFont( font, colour ) ); | |
598 | else | |
599 | SetFont( wxNullGraphicsFont ); | |
600 | } | |
601 | ||
602 | void wxGraphicsContext::DrawPath( const wxGraphicsPath& path, wxPolygonFillMode fillStyle ) | |
603 | { | |
604 | FillPath( path , fillStyle ); | |
605 | StrokePath( path ); | |
606 | } | |
607 | ||
608 | void | |
609 | wxGraphicsContext::DoDrawRotatedText(const wxString &str, | |
610 | wxDouble x, | |
611 | wxDouble y, | |
612 | wxDouble angle) | |
613 | { | |
614 | Translate(x,y); | |
615 | Rotate( -angle ); | |
616 | DrawText( str , 0, 0 ); | |
617 | Rotate( angle ); | |
618 | Translate(-x,-y); | |
619 | } | |
620 | ||
621 | void | |
622 | wxGraphicsContext::DoDrawFilledText(const wxString &str, | |
623 | wxDouble x, | |
624 | wxDouble y, | |
625 | const wxGraphicsBrush& backgroundBrush) | |
626 | { | |
627 | wxGraphicsBrush formerBrush = m_brush; | |
628 | wxGraphicsPen formerPen = m_pen; | |
629 | wxDouble width; | |
630 | wxDouble height; | |
631 | wxDouble descent; | |
632 | wxDouble externalLeading; | |
633 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); | |
634 | SetBrush( backgroundBrush ); | |
635 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape | |
636 | SetPen( wxNullGraphicsPen ); | |
637 | ||
638 | wxGraphicsPath path = CreatePath(); | |
639 | path.AddRectangle( x , y, width, height ); | |
640 | FillPath( path ); | |
641 | ||
642 | DrawText( str, x ,y); | |
643 | SetBrush( formerBrush ); | |
644 | SetPen( formerPen ); | |
645 | } | |
646 | ||
647 | void | |
648 | wxGraphicsContext::DoDrawRotatedFilledText(const wxString &str, | |
649 | wxDouble x, wxDouble y, | |
650 | wxDouble angle, | |
651 | const wxGraphicsBrush& backgroundBrush) | |
652 | { | |
653 | wxGraphicsBrush formerBrush = m_brush; | |
654 | wxGraphicsPen formerPen = m_pen; | |
655 | ||
656 | wxDouble width; | |
657 | wxDouble height; | |
658 | wxDouble descent; | |
659 | wxDouble externalLeading; | |
660 | GetTextExtent( str , &width, &height, &descent, &externalLeading ); | |
661 | SetBrush( backgroundBrush ); | |
662 | // to make sure our 'OffsetToPixelBoundaries' doesn't move the fill shape | |
663 | SetPen( wxNullGraphicsPen ); | |
664 | ||
665 | wxGraphicsPath path = CreatePath(); | |
666 | path.MoveToPoint( x , y ); | |
667 | path.AddLineToPoint( (int) (x + sin(angle) * height) , (int) (y + cos(angle) * height) ); | |
668 | path.AddLineToPoint( | |
669 | (int) (x + sin(angle) * height + cos(angle) * width) , | |
670 | (int) (y + cos(angle) * height - sin(angle) * width)); | |
671 | path.AddLineToPoint((int) (x + cos(angle) * width) , (int) (y - sin(angle) * width) ); | |
672 | FillPath( path ); | |
673 | DrawText( str, x ,y, angle); | |
674 | SetBrush( formerBrush ); | |
675 | SetPen( formerPen ); | |
676 | } | |
677 | ||
678 | void wxGraphicsContext::StrokeLine( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2) | |
679 | { | |
680 | wxGraphicsPath path = CreatePath(); | |
681 | path.MoveToPoint(x1, y1); | |
682 | path.AddLineToPoint( x2, y2 ); | |
683 | StrokePath( path ); | |
684 | } | |
685 | ||
686 | void wxGraphicsContext::DrawRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
687 | { | |
688 | wxGraphicsPath path = CreatePath(); | |
689 | path.AddRectangle( x , y , w , h ); | |
690 | DrawPath( path ); | |
691 | } | |
692 | ||
693 | void wxGraphicsContext::DrawEllipse( wxDouble x, wxDouble y, wxDouble w, wxDouble h) | |
694 | { | |
695 | wxGraphicsPath path = CreatePath(); | |
696 | path.AddEllipse(x,y,w,h); | |
697 | DrawPath(path); | |
698 | } | |
699 | ||
700 | void wxGraphicsContext::DrawRoundedRectangle( wxDouble x, wxDouble y, wxDouble w, wxDouble h, wxDouble radius) | |
701 | { | |
702 | wxGraphicsPath path = CreatePath(); | |
703 | path.AddRoundedRectangle(x,y,w,h,radius); | |
704 | DrawPath(path); | |
705 | } | |
706 | ||
707 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *points) | |
708 | { | |
709 | wxASSERT(n > 1); | |
710 | wxGraphicsPath path = CreatePath(); | |
711 | path.MoveToPoint(points[0].m_x, points[0].m_y); | |
712 | for ( size_t i = 1; i < n; ++i) | |
713 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); | |
714 | StrokePath( path ); | |
715 | } | |
716 | ||
717 | void wxGraphicsContext::DrawLines( size_t n, const wxPoint2DDouble *points, wxPolygonFillMode fillStyle) | |
718 | { | |
719 | wxASSERT(n > 1); | |
720 | wxGraphicsPath path = CreatePath(); | |
721 | path.MoveToPoint(points[0].m_x, points[0].m_y); | |
722 | for ( size_t i = 1; i < n; ++i) | |
723 | path.AddLineToPoint( points[i].m_x, points[i].m_y ); | |
724 | DrawPath( path , fillStyle); | |
725 | } | |
726 | ||
727 | void wxGraphicsContext::StrokeLines( size_t n, const wxPoint2DDouble *beginPoints, const wxPoint2DDouble *endPoints) | |
728 | { | |
729 | wxASSERT(n > 0); | |
730 | wxGraphicsPath path = CreatePath(); | |
731 | for ( size_t i = 0; i < n; ++i) | |
732 | { | |
733 | path.MoveToPoint(beginPoints[i].m_x, beginPoints[i].m_y); | |
734 | path.AddLineToPoint( endPoints[i].m_x, endPoints[i].m_y ); | |
735 | } | |
736 | StrokePath( path ); | |
737 | } | |
738 | ||
739 | // create a 'native' matrix corresponding to these values | |
740 | wxGraphicsMatrix wxGraphicsContext::CreateMatrix( wxDouble a, wxDouble b, wxDouble c, wxDouble d, | |
741 | wxDouble tx, wxDouble ty) const | |
742 | { | |
743 | return GetRenderer()->CreateMatrix(a,b,c,d,tx,ty); | |
744 | } | |
745 | ||
746 | wxGraphicsPath wxGraphicsContext::CreatePath() const | |
747 | { | |
748 | return GetRenderer()->CreatePath(); | |
749 | } | |
750 | ||
751 | wxGraphicsPen wxGraphicsContext::CreatePen(const wxPen& pen) const | |
752 | { | |
753 | return GetRenderer()->CreatePen(pen); | |
754 | } | |
755 | ||
756 | wxGraphicsBrush wxGraphicsContext::CreateBrush(const wxBrush& brush ) const | |
757 | { | |
758 | return GetRenderer()->CreateBrush(brush); | |
759 | } | |
760 | ||
761 | // sets the brush to a linear gradient, starting at (x1,y1) with color c1 to (x2,y2) with color c2 | |
762 | wxGraphicsBrush wxGraphicsContext::CreateLinearGradientBrush( wxDouble x1, wxDouble y1, wxDouble x2, wxDouble y2, | |
763 | const wxColour&c1, const wxColour&c2) const | |
764 | { | |
765 | return GetRenderer()->CreateLinearGradientBrush(x1,y1,x2,y2,c1,c2); | |
766 | } | |
767 | ||
768 | // sets the brush to a radial gradient originating at (xo,yc) with color oColor and ends on a circle around (xc,yc) | |
769 | // with radius r and color cColor | |
770 | wxGraphicsBrush wxGraphicsContext::CreateRadialGradientBrush( wxDouble xo, wxDouble yo, wxDouble xc, wxDouble yc, wxDouble radius, | |
771 | const wxColour &oColor, const wxColour &cColor) const | |
772 | { | |
773 | return GetRenderer()->CreateRadialGradientBrush(xo,yo,xc,yc,radius,oColor,cColor); | |
774 | } | |
775 | ||
776 | // sets the font | |
777 | wxGraphicsFont wxGraphicsContext::CreateFont( const wxFont &font , const wxColour &col ) const | |
778 | { | |
779 | return GetRenderer()->CreateFont(font,col); | |
780 | } | |
781 | ||
782 | wxGraphicsBitmap wxGraphicsContext::CreateBitmap( const wxBitmap& bmp ) const | |
783 | { | |
784 | #ifndef __WXGTK20__ | |
785 | return GetRenderer()->CreateBitmap(bmp); | |
786 | #else | |
787 | return wxNullGraphicsBitmap; | |
788 | #endif | |
789 | } | |
790 | ||
791 | wxGraphicsBitmap wxGraphicsContext::CreateSubBitmap( const wxGraphicsBitmap &bmp, wxDouble x, wxDouble y, wxDouble w, wxDouble h ) const | |
792 | { | |
793 | #ifndef __WXGTK20__ | |
794 | return GetRenderer()->CreateSubBitmap(bmp,x,y,w,h); | |
795 | #else | |
796 | return wxNullGraphicsBitmap; | |
797 | #endif | |
798 | } | |
799 | ||
800 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxWindowDC& dc) | |
801 | { | |
802 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
803 | } | |
804 | ||
805 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxMemoryDC& dc) | |
806 | { | |
807 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
808 | } | |
809 | ||
810 | #if wxUSE_PRINTING_ARCHITECTURE | |
811 | /* static */ wxGraphicsContext* wxGraphicsContext::Create( const wxPrinterDC& dc) | |
812 | { | |
813 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(dc); | |
814 | } | |
815 | #endif | |
816 | ||
817 | wxGraphicsContext* wxGraphicsContext::CreateFromNative( void * context ) | |
818 | { | |
819 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeContext(context); | |
820 | } | |
821 | ||
822 | wxGraphicsContext* wxGraphicsContext::CreateFromNativeWindow( void * window ) | |
823 | { | |
824 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContextFromNativeWindow(window); | |
825 | } | |
826 | ||
827 | wxGraphicsContext* wxGraphicsContext::Create( wxWindow* window ) | |
828 | { | |
829 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateContext(window); | |
830 | } | |
831 | ||
832 | wxGraphicsContext* wxGraphicsContext::Create() | |
833 | { | |
834 | return wxGraphicsRenderer::GetDefaultRenderer()->CreateMeasuringContext(); | |
835 | } | |
836 | ||
837 | //----------------------------------------------------------------------------- | |
838 | // wxGraphicsRenderer | |
839 | //----------------------------------------------------------------------------- | |
840 | ||
841 | IMPLEMENT_ABSTRACT_CLASS(wxGraphicsRenderer, wxObject) | |
842 | ||
843 | #endif // wxUSE_GRAPHICS_CONTEXT |