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1 | ///////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/dfb/dc.cpp | |
3 | // Purpose: wxDC class | |
4 | // Author: Vaclav Slavik | |
5 | // Created: 2006-08-07 | |
6 | // RCS-ID: $Id$ | |
7 | // Copyright: (c) 2006 REA Elektronik GmbH | |
8 | // Licence: wxWindows licence | |
9 | ///////////////////////////////////////////////////////////////////////////// | |
10 | ||
11 | // =========================================================================== | |
12 | // declarations | |
13 | // =========================================================================== | |
14 | ||
15 | // --------------------------------------------------------------------------- | |
16 | // headers | |
17 | // --------------------------------------------------------------------------- | |
18 | ||
19 | // For compilers that support precompilation, includes "wx.h". | |
20 | #include "wx/wxprec.h" | |
21 | ||
22 | #ifdef __BORLANDC__ | |
23 | #pragma hdrstop | |
24 | #endif | |
25 | ||
26 | #ifndef WX_PRECOMP | |
27 | #include "wx/dc.h" | |
28 | #include "wx/log.h" | |
29 | #endif | |
30 | ||
31 | #include "wx/dfb/private.h" | |
32 | ||
33 | // these values are used to initialize newly created DC | |
34 | #define DEFAULT_FONT (*wxNORMAL_FONT) | |
35 | #define DEFAULT_PEN (*wxBLACK_PEN) | |
36 | #define DEFAULT_BRUSH (*wxWHITE_BRUSH) | |
37 | ||
38 | // =========================================================================== | |
39 | // implementation | |
40 | // =========================================================================== | |
41 | ||
42 | //----------------------------------------------------------------------------- | |
43 | // wxDC | |
44 | //----------------------------------------------------------------------------- | |
45 | ||
46 | IMPLEMENT_ABSTRACT_CLASS(wxDC, wxDCBase) | |
47 | ||
48 | // Default constructor | |
49 | wxDC::wxDC() | |
50 | { | |
51 | m_ok = false; | |
52 | } | |
53 | ||
54 | wxDC::wxDC(const wxIDirectFBSurfacePtr& surface) | |
55 | { | |
56 | Init(surface); | |
57 | } | |
58 | ||
59 | void wxDC::Init(const wxIDirectFBSurfacePtr& surface) | |
60 | { | |
61 | m_ok = (surface != NULL); | |
62 | wxCHECK_RET( surface != NULL, _T("invalid surface") ); | |
63 | ||
64 | m_surface = surface; | |
65 | ||
66 | m_mm_to_pix_x = (double)wxGetDisplaySize().GetWidth() / | |
67 | (double)wxGetDisplaySizeMM().GetWidth(); | |
68 | m_mm_to_pix_y = (double)wxGetDisplaySize().GetHeight() / | |
69 | (double)wxGetDisplaySizeMM().GetHeight(); | |
70 | ||
71 | SetFont(DEFAULT_FONT); | |
72 | SetPen(DEFAULT_PEN); | |
73 | SetBrush(DEFAULT_BRUSH); | |
74 | } | |
75 | ||
76 | ||
77 | // --------------------------------------------------------------------------- | |
78 | // clipping | |
79 | // --------------------------------------------------------------------------- | |
80 | ||
81 | ||
82 | #define DO_SET_CLIPPING_BOX(rg) \ | |
83 | { \ | |
84 | wxRect rect = rg.GetBox(); \ | |
85 | m_clipX1 = (wxCoord) XDEV2LOG(rect.GetLeft()); \ | |
86 | m_clipY1 = (wxCoord) YDEV2LOG(rect.GetTop()); \ | |
87 | m_clipX2 = (wxCoord) XDEV2LOG(rect.GetRight()); \ | |
88 | m_clipY2 = (wxCoord) YDEV2LOG(rect.GetBottom()); \ | |
89 | } | |
90 | ||
91 | void wxDC::DoSetClippingRegion(wxCoord cx, wxCoord cy, wxCoord cw, wxCoord ch) | |
92 | { | |
93 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
94 | ||
95 | wxSize size(GetSize()); | |
96 | ||
97 | // NB: We intersect the clipping rectangle with surface's area here because | |
98 | // DirectFB will return an error if you try to set clipping rectangle | |
99 | // that is partially outside of the surface. | |
100 | DFBRegion r; | |
101 | r.x1 = wxMax(0, XLOG2DEV(cx)); | |
102 | r.y1 = wxMax(0, YLOG2DEV(cy)); | |
103 | r.x2 = wxMin(r.x1 + XLOG2DEVREL(cw), size.x) - 1; | |
104 | r.y2 = wxMin(r.y1 + YLOG2DEVREL(ch), size.y) - 1; | |
105 | ||
106 | if ( !m_surface->SetClip(&r) ) | |
107 | return; | |
108 | ||
109 | m_clipX1 = cx; | |
110 | m_clipY1 = cy; | |
111 | m_clipX2 = cx + cw - 1; | |
112 | m_clipY2 = cy + ch -1; | |
113 | m_clipping = true; | |
114 | } | |
115 | ||
116 | void wxDC::DoSetClippingRegionAsRegion(const wxRegion& region) | |
117 | { | |
118 | // NB: this can be done because wxDFB only supports | |
119 | // rectangular regions | |
120 | SetClippingRegion(region.AsRect()); | |
121 | } | |
122 | ||
123 | void wxDC::DestroyClippingRegion() | |
124 | { | |
125 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
126 | ||
127 | m_surface->SetClip(NULL); | |
128 | ||
129 | ResetClipping(); | |
130 | } | |
131 | ||
132 | // --------------------------------------------------------------------------- | |
133 | // query capabilities | |
134 | // --------------------------------------------------------------------------- | |
135 | ||
136 | int wxDC::GetDepth() const | |
137 | { | |
138 | return m_surface->GetDepth(); | |
139 | } | |
140 | ||
141 | // --------------------------------------------------------------------------- | |
142 | // drawing | |
143 | // --------------------------------------------------------------------------- | |
144 | ||
145 | void wxDC::Clear() | |
146 | { | |
147 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
148 | ||
149 | if ( m_backgroundBrush.GetStyle() == wxTRANSPARENT ) | |
150 | return; | |
151 | ||
152 | wxColour clr = m_backgroundBrush.GetColour(); | |
153 | m_surface->Clear(clr.Red(), clr.Green(), clr.Blue(), clr.Alpha()); | |
154 | ||
155 | wxSize size(GetSize()); | |
156 | CalcBoundingBox(XDEV2LOG(0), YDEV2LOG(0)); | |
157 | CalcBoundingBox(XDEV2LOG(size.x), YDEV2LOG(size.y)); | |
158 | } | |
159 | ||
160 | extern bool wxDoFloodFill(wxDC *dc, wxCoord x, wxCoord y, | |
161 | const wxColour & col, int style); | |
162 | ||
163 | bool wxDC::DoFloodFill(wxCoord x, wxCoord y, | |
164 | const wxColour& col, int style) | |
165 | { | |
166 | return wxDoFloodFill(this, x, y, col, style); | |
167 | } | |
168 | ||
169 | bool wxDC::DoGetPixel(wxCoord x, wxCoord y, wxColour *col) const | |
170 | { | |
171 | wxCHECK_MSG( col, false, _T("NULL colour parameter in wxDC::GetPixel")); | |
172 | ||
173 | wxFAIL_MSG( _T("GetPixel not implemented") ); | |
174 | return false; | |
175 | } | |
176 | ||
177 | void wxDC::DoCrossHair(wxCoord x, wxCoord y) | |
178 | { | |
179 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
180 | ||
181 | wxFAIL_MSG( _T("CrossHair not implemented") ); | |
182 | } | |
183 | ||
184 | void wxDC::DoDrawLine(wxCoord x1, wxCoord y1, wxCoord x2, wxCoord y2) | |
185 | { | |
186 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
187 | ||
188 | if ( m_pen.GetStyle() == wxTRANSPARENT ) | |
189 | return; | |
190 | ||
191 | m_surface->DrawLine(XLOG2DEV(x1), YLOG2DEV(y1), | |
192 | XLOG2DEV(x2), YLOG2DEV(y2)); | |
193 | ||
194 | CalcBoundingBox(x1, y1); | |
195 | CalcBoundingBox(x2, y2); | |
196 | } | |
197 | ||
198 | // Draws an arc of a circle, centred on (xc, yc), with starting point (x1, y1) | |
199 | // and ending at (x2, y2) | |
200 | void wxDC::DoDrawArc(wxCoord x1, wxCoord y1, | |
201 | wxCoord x2, wxCoord y2, | |
202 | wxCoord xc, wxCoord yc) | |
203 | { | |
204 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
205 | ||
206 | wxFAIL_MSG( _T("DrawArc not implemented") ); | |
207 | } | |
208 | ||
209 | void wxDC::DoDrawPoint(wxCoord x, wxCoord y) | |
210 | { | |
211 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
212 | ||
213 | // NB: DirectFB API doesn't provide a function for drawing points, so | |
214 | // implement it as 1px long line. This is inefficient, but then, so is | |
215 | // using DrawPoint() for drawing more than a few points. | |
216 | DoDrawLine(x, y, x, y); | |
217 | ||
218 | // FIXME_DFB: implement special cases for common formats (RGB24,RGBA/RGB32) | |
219 | } | |
220 | ||
221 | void wxDC::DoDrawPolygon(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset,int WXUNUSED(fillStyle)) | |
222 | { | |
223 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
224 | ||
225 | wxFAIL_MSG( _T("DrawPolygon not implemented") ); | |
226 | } | |
227 | ||
228 | void wxDC::DoDrawLines(int n, wxPoint points[], wxCoord xoffset, wxCoord yoffset) | |
229 | { | |
230 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
231 | ||
232 | // TODO: impl. using DirectDB's DrawLines | |
233 | wxFAIL_MSG( _T("DrawLines not implemented") ); | |
234 | } | |
235 | ||
236 | void wxDC::DoDrawRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
237 | { | |
238 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
239 | ||
240 | wxCoord xx = XLOG2DEV(x); | |
241 | wxCoord yy = YLOG2DEV(y); | |
242 | wxCoord ww = m_signX * XLOG2DEVREL(width); | |
243 | wxCoord hh = m_signY * YLOG2DEVREL(height); | |
244 | ||
245 | if ( ww == 0 || hh == 0 ) return; | |
246 | ||
247 | if ( ww < 0 ) | |
248 | { | |
249 | ww = -ww; | |
250 | xx = xx - ww; | |
251 | } | |
252 | if ( hh < 0 ) | |
253 | { | |
254 | hh = -hh; | |
255 | yy = yy - hh; | |
256 | } | |
257 | ||
258 | if ( m_brush.GetStyle() != wxTRANSPARENT ) | |
259 | { | |
260 | SelectColour(m_brush.GetColour()); | |
261 | m_surface->FillRectangle(xx, yy, ww, hh); | |
262 | // restore pen's colour, because other drawing functions expect the | |
263 | // colour to be set to the pen: | |
264 | SelectColour(m_pen.GetColour()); | |
265 | } | |
266 | ||
267 | if ( m_pen.GetStyle() != wxTRANSPARENT ) | |
268 | { | |
269 | m_surface->DrawRectangle(xx, yy, ww, hh); | |
270 | } | |
271 | ||
272 | CalcBoundingBox(x, y); | |
273 | CalcBoundingBox(x + width, y + height); | |
274 | } | |
275 | ||
276 | void wxDC::DoDrawRoundedRectangle(wxCoord x, wxCoord y, wxCoord width, wxCoord height, double radius) | |
277 | { | |
278 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
279 | ||
280 | wxFAIL_MSG( _T("DrawRoundedRectangle not implemented") ); | |
281 | } | |
282 | ||
283 | void wxDC::DoDrawEllipse(wxCoord x, wxCoord y, wxCoord width, wxCoord height) | |
284 | { | |
285 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
286 | ||
287 | wxFAIL_MSG( _T("DrawElipse not implemented") ); | |
288 | } | |
289 | ||
290 | void wxDC::DoDrawEllipticArc(wxCoord x,wxCoord y,wxCoord w,wxCoord h,double sa,double ea) | |
291 | { | |
292 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
293 | ||
294 | wxFAIL_MSG( _T("DrawElipticArc not implemented") ); | |
295 | } | |
296 | ||
297 | void wxDC::DoDrawText(const wxString& text, wxCoord x, wxCoord y) | |
298 | { | |
299 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
300 | ||
301 | wxCoord xx = XLOG2DEV(x); | |
302 | wxCoord yy = YLOG2DEV(y); | |
303 | ||
304 | // update the bounding box | |
305 | wxCoord w, h; | |
306 | CalcBoundingBox(x, y); | |
307 | GetTextExtent(text, &w, &h); | |
308 | CalcBoundingBox(x + w, y + h); | |
309 | ||
310 | // if background mode is solid, DrawText must paint text's background: | |
311 | if ( m_backgroundMode == wxSOLID ) | |
312 | { | |
313 | wxCHECK_RET( m_textBackgroundColour.Ok(), | |
314 | wxT("invalid background color") ); | |
315 | ||
316 | SelectColour(m_textBackgroundColour); | |
317 | m_surface->FillRectangle(xx, yy, XLOG2DEVREL(w), YLOG2DEVREL(h)); | |
318 | } | |
319 | ||
320 | // finally draw the text itself: | |
321 | wxCHECK_RET( m_textForegroundColour.Ok(), | |
322 | wxT("invalid foreground color") ); | |
323 | SelectColour(m_textForegroundColour); | |
324 | m_surface->DrawString(wxSTR_TO_DFB(text), -1, xx, yy, DSTF_LEFT | DSTF_TOP); | |
325 | ||
326 | // restore pen's colour, because other drawing functions expect the colour | |
327 | // to be set to the pen: | |
328 | SelectColour(m_pen.GetColour()); | |
329 | } | |
330 | ||
331 | void wxDC::DoDrawRotatedText(const wxString& text, | |
332 | wxCoord x, wxCoord y, | |
333 | double angle) | |
334 | { | |
335 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
336 | ||
337 | wxFAIL_MSG( _T("DrawRotatedText not implemented") ); | |
338 | } | |
339 | ||
340 | // --------------------------------------------------------------------------- | |
341 | // set GDI objects | |
342 | // --------------------------------------------------------------------------- | |
343 | ||
344 | void wxDC::SetPen(const wxPen& pen) | |
345 | { | |
346 | m_pen = pen.Ok() ? pen : DEFAULT_PEN; | |
347 | ||
348 | SelectColour(m_pen.GetColour()); | |
349 | } | |
350 | ||
351 | void wxDC::SetBrush(const wxBrush& brush) | |
352 | { | |
353 | m_brush = brush.Ok() ? brush : DEFAULT_BRUSH; | |
354 | } | |
355 | ||
356 | void wxDC::SelectColour(const wxColour& clr) | |
357 | { | |
358 | m_surface->SetColor(clr.Red(), clr.Green(), clr.Blue(), clr.Alpha()); | |
359 | #warning "use SetColorIndex?" | |
360 | } | |
361 | ||
362 | #if wxUSE_PALETTE | |
363 | void wxDC::SetPalette(const wxPalette& WXUNUSED(palette)) | |
364 | { | |
365 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
366 | ||
367 | wxFAIL_MSG( _T("SetPalette not implemented") ); | |
368 | } | |
369 | #endif // wxUSE_PALETTE | |
370 | ||
371 | void wxDC::SetFont(const wxFont& font) | |
372 | { | |
373 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
374 | ||
375 | wxFont f(font.Ok() ? font : DEFAULT_FONT); | |
376 | ||
377 | if ( !m_surface->SetFont(f.GetDirectFBFont()) ) | |
378 | return; | |
379 | ||
380 | m_font = f; | |
381 | } | |
382 | ||
383 | void wxDC::SetBackground(const wxBrush& brush) | |
384 | { | |
385 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
386 | ||
387 | if (!brush.Ok()) return; | |
388 | ||
389 | m_backgroundBrush = brush; | |
390 | } | |
391 | ||
392 | void wxDC::SetBackgroundMode(int mode) | |
393 | { | |
394 | m_backgroundMode = mode; | |
395 | } | |
396 | ||
397 | void wxDC::SetLogicalFunction(int function) | |
398 | { | |
399 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
400 | ||
401 | // NB: we could also support XOR, but for blitting only (via DSBLIT_XOR); | |
402 | // and possibly others via SetSrc/DstBlendFunction() | |
403 | wxASSERT_MSG( function == wxCOPY, | |
404 | _T("only wxCOPY logical function supported") ); | |
405 | ||
406 | m_logicalFunction = function; | |
407 | } | |
408 | ||
409 | bool wxDC::StartDoc(const wxString& WXUNUSED(message)) | |
410 | { | |
411 | // We might be previewing, so return true to let it continue. | |
412 | return true; | |
413 | } | |
414 | ||
415 | void wxDC::EndDoc() | |
416 | { | |
417 | } | |
418 | ||
419 | void wxDC::StartPage() | |
420 | { | |
421 | } | |
422 | ||
423 | void wxDC::EndPage() | |
424 | { | |
425 | } | |
426 | ||
427 | // --------------------------------------------------------------------------- | |
428 | // text metrics | |
429 | // --------------------------------------------------------------------------- | |
430 | ||
431 | wxCoord wxDC::GetCharHeight() const | |
432 | { | |
433 | wxCHECK_MSG( Ok(), -1, wxT("invalid dc") ); | |
434 | wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") ); | |
435 | ||
436 | int h = -1; | |
437 | m_font.GetDirectFBFont()->GetHeight(&h); | |
438 | return YDEV2LOGREL(h); | |
439 | } | |
440 | ||
441 | wxCoord wxDC::GetCharWidth() const | |
442 | { | |
443 | wxCHECK_MSG( Ok(), -1, wxT("invalid dc") ); | |
444 | wxCHECK_MSG( m_font.Ok(), -1, wxT("no font selected") ); | |
445 | ||
446 | int w = -1; | |
447 | m_font.GetDirectFBFont()->GetStringWidth("H", 1, &w); | |
448 | // VS: YDEV is corrent, it should *not* be XDEV, because font's are only | |
449 | // scaled according to m_scaleY | |
450 | return YDEV2LOGREL(w); | |
451 | } | |
452 | ||
453 | void wxDC::DoGetTextExtent(const wxString& string, wxCoord *x, wxCoord *y, | |
454 | wxCoord *descent, wxCoord *externalLeading, | |
455 | wxFont *theFont) const | |
456 | { | |
457 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
458 | wxCHECK_RET( m_font.Ok(), wxT("no font selected") ); | |
459 | wxCHECK_RET( !theFont || theFont->Ok(), wxT("invalid font") ); | |
460 | ||
461 | wxFont oldFont; | |
462 | if ( theFont != NULL ) | |
463 | { | |
464 | oldFont = m_font; | |
465 | wxConstCast(this, wxDC)->SetFont(*theFont); | |
466 | } | |
467 | ||
468 | wxCoord xx = 0, yy = 0; | |
469 | DFBRectangle rect; | |
470 | wxIDirectFBFontPtr f = m_font.GetDirectFBFont(); | |
471 | ||
472 | if ( f->GetStringExtents(wxSTR_TO_DFB(string), -1, &rect, NULL) ) | |
473 | { | |
474 | // VS: YDEV is corrent, it should *not* be XDEV, because font's are | |
475 | // only scaled according to m_scaleY | |
476 | xx = YDEV2LOGREL(rect.w); | |
477 | yy = YDEV2LOGREL(rect.h); | |
478 | ||
479 | if ( descent ) | |
480 | { | |
481 | int d; | |
482 | if ( f->GetDescender(&d) ) | |
483 | *descent = YDEV2LOGREL(-d); | |
484 | else | |
485 | *descent = 0; | |
486 | } | |
487 | } | |
488 | ||
489 | if ( x ) *x = xx; | |
490 | if ( y ) *y = yy; | |
491 | if ( externalLeading ) *externalLeading = 0; | |
492 | ||
493 | if ( theFont != NULL ) | |
494 | wxConstCast(this, wxDC)->SetFont(oldFont); | |
495 | } | |
496 | ||
497 | ||
498 | ||
499 | // --------------------------------------------------------------------------- | |
500 | // mapping modes | |
501 | // --------------------------------------------------------------------------- | |
502 | ||
503 | void wxDC::ComputeScaleAndOrigin() | |
504 | { | |
505 | m_scaleX = m_logicalScaleX * m_userScaleX; | |
506 | m_scaleY = m_logicalScaleY * m_userScaleY; | |
507 | ||
508 | // FIXME_DFB: scaling affects pixel size of font, pens, brushes, which | |
509 | // is not currently implemented here; probably makes sense to | |
510 | // switch to Cairo instead of implementing everything for DFB | |
511 | wxASSERT_MSG( m_scaleX == 1.0 && m_scaleY == 1.0, | |
512 | _T("scaling is not implemented in wxDFB") ); | |
513 | } | |
514 | ||
515 | void wxDC::SetMapMode(int mode) | |
516 | { | |
517 | #warning "move this to common code, it's shared by almost all ports!" | |
518 | switch (mode) | |
519 | { | |
520 | case wxMM_TWIPS: | |
521 | SetLogicalScale(twips2mm*m_mm_to_pix_x, twips2mm*m_mm_to_pix_y); | |
522 | break; | |
523 | case wxMM_POINTS: | |
524 | SetLogicalScale(pt2mm*m_mm_to_pix_x, pt2mm*m_mm_to_pix_y); | |
525 | break; | |
526 | case wxMM_METRIC: | |
527 | SetLogicalScale(m_mm_to_pix_x, m_mm_to_pix_y); | |
528 | break; | |
529 | case wxMM_LOMETRIC: | |
530 | SetLogicalScale(m_mm_to_pix_x/10.0, m_mm_to_pix_y/10.0); | |
531 | break; | |
532 | default: | |
533 | case wxMM_TEXT: | |
534 | SetLogicalScale(1.0, 1.0); | |
535 | break; | |
536 | } | |
537 | m_mappingMode = mode; | |
538 | } | |
539 | ||
540 | void wxDC::SetUserScale(double x, double y) | |
541 | { | |
542 | #warning "move this to common code?" | |
543 | // allow negative ? -> no | |
544 | m_userScaleX = x; | |
545 | m_userScaleY = y; | |
546 | ComputeScaleAndOrigin(); | |
547 | } | |
548 | ||
549 | void wxDC::SetLogicalScale(double x, double y) | |
550 | { | |
551 | #warning "move this to common code?" | |
552 | // allow negative ? | |
553 | m_logicalScaleX = x; | |
554 | m_logicalScaleY = y; | |
555 | ComputeScaleAndOrigin(); | |
556 | } | |
557 | ||
558 | void wxDC::SetLogicalOrigin( wxCoord x, wxCoord y ) | |
559 | { | |
560 | #warning "move this to common code?" | |
561 | m_logicalOriginX = x * m_signX; // is this still correct ? | |
562 | m_logicalOriginY = y * m_signY; | |
563 | ComputeScaleAndOrigin(); | |
564 | } | |
565 | ||
566 | void wxDC::SetDeviceOrigin( wxCoord x, wxCoord y ) | |
567 | { | |
568 | #warning "move this to common code?" | |
569 | // only wxPostScripDC has m_signX = -1, we override SetDeviceOrigin there | |
570 | m_deviceOriginX = x; | |
571 | m_deviceOriginY = y; | |
572 | ComputeScaleAndOrigin(); | |
573 | } | |
574 | ||
575 | void wxDC::SetAxisOrientation( bool xLeftRight, bool yBottomUp ) | |
576 | { | |
577 | #warning "move this to common code?" | |
578 | // only wxPostScripDC has m_signX = -1, we override SetAxisOrientation there | |
579 | m_signX = (xLeftRight ? 1 : -1); | |
580 | m_signY = (yBottomUp ? -1 : 1); | |
581 | ComputeScaleAndOrigin(); | |
582 | } | |
583 | ||
584 | // --------------------------------------------------------------------------- | |
585 | // coordinates transformations | |
586 | // --------------------------------------------------------------------------- | |
587 | ||
588 | wxCoord wxDCBase::DeviceToLogicalX(wxCoord x) const | |
589 | { | |
590 | return ((wxDC *)this)->XDEV2LOG(x); | |
591 | } | |
592 | ||
593 | wxCoord wxDCBase::DeviceToLogicalY(wxCoord y) const | |
594 | { | |
595 | return ((wxDC *)this)->YDEV2LOG(y); | |
596 | } | |
597 | ||
598 | wxCoord wxDCBase::DeviceToLogicalXRel(wxCoord x) const | |
599 | { | |
600 | return ((wxDC *)this)->XDEV2LOGREL(x); | |
601 | } | |
602 | ||
603 | wxCoord wxDCBase::DeviceToLogicalYRel(wxCoord y) const | |
604 | { | |
605 | return ((wxDC *)this)->YDEV2LOGREL(y); | |
606 | } | |
607 | ||
608 | wxCoord wxDCBase::LogicalToDeviceX(wxCoord x) const | |
609 | { | |
610 | return ((wxDC *)this)->XLOG2DEV(x); | |
611 | } | |
612 | ||
613 | wxCoord wxDCBase::LogicalToDeviceY(wxCoord y) const | |
614 | { | |
615 | return ((wxDC *)this)->YLOG2DEV(y); | |
616 | } | |
617 | ||
618 | wxCoord wxDCBase::LogicalToDeviceXRel(wxCoord x) const | |
619 | { | |
620 | return ((wxDC *)this)->XLOG2DEVREL(x); | |
621 | } | |
622 | ||
623 | wxCoord wxDCBase::LogicalToDeviceYRel(wxCoord y) const | |
624 | { | |
625 | return ((wxDC *)this)->YLOG2DEVREL(y); | |
626 | } | |
627 | ||
628 | ||
629 | void wxDC::DoGetSize(int *w, int *h) const | |
630 | { | |
631 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
632 | ||
633 | m_surface->GetSize(w, h); | |
634 | } | |
635 | ||
636 | void wxDC::DoGetSizeMM(int *width, int *height) const | |
637 | { | |
638 | #warning "move this to common code?" | |
639 | int w = 0; | |
640 | int h = 0; | |
641 | GetSize(&w, &h); | |
642 | if ( width ) *width = int(double(w) / (m_userScaleX*m_mm_to_pix_x)); | |
643 | if ( height ) *height = int(double(h) / (m_userScaleY*m_mm_to_pix_y)); | |
644 | } | |
645 | ||
646 | wxSize wxDC::GetPPI() const | |
647 | { | |
648 | #warning "move this to common code?" | |
649 | return wxSize(int(double(m_mm_to_pix_x) * inches2mm), | |
650 | int(double(m_mm_to_pix_y) * inches2mm)); | |
651 | } | |
652 | ||
653 | ||
654 | // --------------------------------------------------------------------------- | |
655 | // Blitting | |
656 | // --------------------------------------------------------------------------- | |
657 | ||
658 | bool wxDC::DoBlit(wxCoord xdest, wxCoord ydest, | |
659 | wxCoord width, wxCoord height, | |
660 | wxDC *source, wxCoord xsrc, wxCoord ysrc, | |
661 | int rop, bool useMask, | |
662 | wxCoord xsrcMask, wxCoord ysrcMask) | |
663 | { | |
664 | wxCHECK_MSG( Ok(), false, _T("invalid dc") ); | |
665 | wxCHECK_MSG( source, false, _T("invalid source dc") ); | |
666 | ||
667 | // NB: we could also support XOR here (via DSBLIT_XOR) | |
668 | // and possibly others via SetSrc/DstBlendFunction() | |
669 | wxCHECK_MSG( rop == wxCOPY, false, _T("only wxCOPY function supported") ); | |
670 | ||
671 | // transform the source DC coords to the device ones | |
672 | xsrc = source->LogicalToDeviceX(xsrc); | |
673 | ysrc = source->LogicalToDeviceY(ysrc); | |
674 | ||
675 | // FIXME_DFB: use the mask origin when drawing transparently | |
676 | wxASSERT_MSG( xsrcMask == -1 && ysrcMask == -1, | |
677 | _T("non-default source mask offset not implemented") ); | |
678 | #if 0 | |
679 | if (xsrcMask == -1 && ysrcMask == -1) | |
680 | { | |
681 | xsrcMask = xsrc; ysrcMask = ysrc; | |
682 | } | |
683 | else | |
684 | { | |
685 | xsrcMask = source->LogicalToDeviceX(xsrcMask); | |
686 | ysrcMask = source->LogicalToDeviceY(ysrcMask); | |
687 | } | |
688 | #endif | |
689 | ||
690 | wxMemoryDC *sourceAsMemDC = wxDynamicCast(source, wxMemoryDC); | |
691 | if ( sourceAsMemDC ) | |
692 | { | |
693 | DoDrawSubBitmap(sourceAsMemDC->GetSelectedObject(), | |
694 | xsrc, ysrc, | |
695 | width, height, | |
696 | xdest, ydest, | |
697 | rop, | |
698 | useMask); | |
699 | } | |
700 | else | |
701 | { | |
702 | return DoBlitFromSurface(source->GetDirectFBSurface(), | |
703 | xsrc, ysrc, | |
704 | width, height, | |
705 | xdest, ydest); | |
706 | } | |
707 | ||
708 | return true; | |
709 | } | |
710 | ||
711 | void wxDC::DoDrawBitmap(const wxBitmap &bmp, wxCoord x, wxCoord y, bool useMask) | |
712 | { | |
713 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
714 | wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); | |
715 | ||
716 | DoDrawSubBitmap(bmp, | |
717 | 0, 0, bmp.GetWidth(), bmp.GetHeight(), | |
718 | x, y, | |
719 | m_logicalFunction, useMask); | |
720 | } | |
721 | ||
722 | void wxDC::DoDrawIcon(const wxIcon& icon, wxCoord x, wxCoord y) | |
723 | { | |
724 | // VZ: egcs 1.0.3 refuses to compile this without cast, no idea why | |
725 | DoDrawBitmap((const wxBitmap&)icon, x, y, true); | |
726 | } | |
727 | ||
728 | void wxDC::DoDrawSubBitmap(const wxBitmap &bmp, | |
729 | wxCoord x, wxCoord y, wxCoord w, wxCoord h, | |
730 | wxCoord destx, wxCoord desty, int rop, bool useMask) | |
731 | { | |
732 | wxCHECK_RET( Ok(), wxT("invalid dc") ); | |
733 | wxCHECK_RET( bmp.Ok(), wxT("invalid bitmap") ); | |
734 | ||
735 | // NB: we could also support XOR here (via DSBLIT_XOR) | |
736 | // and possibly others via SetSrc/DstBlendFunction() | |
737 | wxCHECK_RET( rop == wxCOPY, _T("only wxCOPY function supported") ); | |
738 | ||
739 | if ( bmp.GetDepth() == 1 ) | |
740 | { | |
741 | // Mono bitmaps are handled in special way -- all 1s are drawn in | |
742 | // foreground colours, all 0s in background colour. | |
743 | wxFAIL_MSG( _T("drawing mono bitmaps not implemented") ); | |
744 | return; | |
745 | } | |
746 | ||
747 | if ( useMask && bmp.GetMask() ) | |
748 | { | |
749 | // FIXME_DFB: see MGL sources for a way to do it, but it's not directly | |
750 | // applicable because DirectFB doesn't implement ROPs; OTOH, | |
751 | // it has blitting modes that can be useful; finally, see | |
752 | // DFB's SetSrcBlendFunction() and SetSrcColorKey() | |
753 | wxFAIL_MSG( _T("drawing bitmaps with masks not implemented") ); | |
754 | return; | |
755 | } | |
756 | ||
757 | DoBlitFromSurface(bmp.GetDirectFBSurface(), | |
758 | x, y, | |
759 | w, h, | |
760 | destx, desty); | |
761 | } | |
762 | ||
763 | bool wxDC::DoBlitFromSurface(const wxIDirectFBSurfacePtr& src, | |
764 | wxCoord srcx, wxCoord srcy, | |
765 | wxCoord w, wxCoord h, | |
766 | wxCoord dstx, wxCoord dsty) | |
767 | { | |
768 | CalcBoundingBox(dstx, dsty); | |
769 | CalcBoundingBox(dstx + w, dsty + h); | |
770 | ||
771 | DFBRectangle srcRect = { srcx, srcy, w, h }; | |
772 | DFBRectangle dstRect = { XLOG2DEV(dstx), YLOG2DEV(dsty), | |
773 | XLOG2DEVREL(w), YLOG2DEVREL(h) }; | |
774 | ||
775 | wxIDirectFBSurfacePtr dst(m_surface); | |
776 | ||
777 | // FIXME: this will have to be different in useMask case, see above | |
778 | if ( !dst->SetBlittingFlags(DSBLIT_NOFX) ) | |
779 | return false; | |
780 | ||
781 | if ( srcRect.w != dstRect.w || srcRect.h != dstRect.h ) | |
782 | { | |
783 | // the bitmap is drawn stretched: | |
784 | dst->StretchBlit(src, &srcRect, &dstRect); | |
785 | } | |
786 | else | |
787 | { | |
788 | // no stretching, size is preserved: | |
789 | dst->Blit(src, &srcRect, dstRect.x, dstRect.y); | |
790 | } | |
791 | ||
792 | return true; | |
793 | } |