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1 | /////////////////////////////////////////////////////////////////////////////// | |
2 | // Name: src/msw/gdiimage.cpp | |
3 | // Purpose: wxGDIImage implementation | |
4 | // Author: Vadim Zeitlin | |
5 | // Modified by: | |
6 | // Created: 20.11.99 | |
7 | // RCS-ID: $Id$ | |
8 | // Copyright: (c) 1999 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr> | |
9 | // Licence: wxWindows licence | |
10 | /////////////////////////////////////////////////////////////////////////////// | |
11 | ||
12 | // ============================================================================ | |
13 | // declarations | |
14 | // ============================================================================ | |
15 | ||
16 | // ---------------------------------------------------------------------------- | |
17 | // headers | |
18 | // ---------------------------------------------------------------------------- | |
19 | ||
20 | // For compilers that support precompilation, includes "wx.h". | |
21 | #include "wx/wxprec.h" | |
22 | ||
23 | #ifdef __BORLANDC__ | |
24 | #pragma hdrstop | |
25 | #endif | |
26 | ||
27 | #ifndef WX_PRECOMP | |
28 | #include "wx/string.h" | |
29 | #include "wx/log.h" | |
30 | #include "wx/app.h" | |
31 | #include "wx/bitmap.h" | |
32 | #endif // WX_PRECOMP | |
33 | ||
34 | #include "wx/msw/private.h" | |
35 | ||
36 | #include "wx/msw/gdiimage.h" | |
37 | ||
38 | #if wxUSE_WXDIB | |
39 | #include "wx/msw/dib.h" | |
40 | #endif | |
41 | ||
42 | #ifdef __WXWINCE__ | |
43 | #include <winreg.h> | |
44 | #include <shellapi.h> | |
45 | #endif | |
46 | ||
47 | #include "wx/file.h" | |
48 | ||
49 | #include "wx/listimpl.cpp" | |
50 | WX_DEFINE_LIST(wxGDIImageHandlerList) | |
51 | ||
52 | // ---------------------------------------------------------------------------- | |
53 | // private classes | |
54 | // ---------------------------------------------------------------------------- | |
55 | ||
56 | #ifndef __WXMICROWIN__ | |
57 | ||
58 | // all image handlers are declared/defined in this file because the outside | |
59 | // world doesn't have to know about them (but only about wxBITMAP_TYPE_XXX ids) | |
60 | ||
61 | class WXDLLEXPORT wxBMPFileHandler : public wxBitmapHandler | |
62 | { | |
63 | public: | |
64 | wxBMPFileHandler() : wxBitmapHandler(_T("Windows bitmap file"), _T("bmp"), | |
65 | wxBITMAP_TYPE_BMP) | |
66 | { | |
67 | } | |
68 | ||
69 | virtual bool LoadFile(wxBitmap *bitmap, | |
70 | const wxString& name, long flags, | |
71 | int desiredWidth, int desiredHeight); | |
72 | virtual bool SaveFile(wxBitmap *bitmap, | |
73 | const wxString& name, int type, | |
74 | const wxPalette *palette = NULL); | |
75 | ||
76 | private: | |
77 | DECLARE_DYNAMIC_CLASS(wxBMPFileHandler) | |
78 | }; | |
79 | ||
80 | class WXDLLEXPORT wxBMPResourceHandler: public wxBitmapHandler | |
81 | { | |
82 | public: | |
83 | wxBMPResourceHandler() : wxBitmapHandler(_T("Windows bitmap resource"), | |
84 | wxEmptyString, | |
85 | wxBITMAP_TYPE_BMP_RESOURCE) | |
86 | { | |
87 | } | |
88 | ||
89 | virtual bool LoadFile(wxBitmap *bitmap, | |
90 | const wxString& name, long flags, | |
91 | int desiredWidth, int desiredHeight); | |
92 | ||
93 | private: | |
94 | DECLARE_DYNAMIC_CLASS(wxBMPResourceHandler) | |
95 | }; | |
96 | ||
97 | class WXDLLEXPORT wxIconHandler : public wxGDIImageHandler | |
98 | { | |
99 | public: | |
100 | wxIconHandler(const wxString& name, const wxString& ext, long type) | |
101 | : wxGDIImageHandler(name, ext, type) | |
102 | { | |
103 | } | |
104 | ||
105 | // creating and saving icons is not supported | |
106 | virtual bool Create(wxGDIImage *WXUNUSED(image), | |
107 | void *WXUNUSED(data), | |
108 | long WXUNUSED(flags), | |
109 | int WXUNUSED(width), | |
110 | int WXUNUSED(height), | |
111 | int WXUNUSED(depth) = 1) | |
112 | { | |
113 | return false; | |
114 | } | |
115 | ||
116 | virtual bool Save(wxGDIImage *WXUNUSED(image), | |
117 | const wxString& WXUNUSED(name), | |
118 | int WXUNUSED(type)) | |
119 | { | |
120 | return false; | |
121 | } | |
122 | ||
123 | virtual bool Load(wxGDIImage *image, | |
124 | const wxString& name, | |
125 | long flags, | |
126 | int desiredWidth, int desiredHeight) | |
127 | { | |
128 | wxIcon *icon = wxDynamicCast(image, wxIcon); | |
129 | wxCHECK_MSG( icon, false, _T("wxIconHandler only works with icons") ); | |
130 | ||
131 | return LoadIcon(icon, name, flags, desiredWidth, desiredHeight); | |
132 | } | |
133 | ||
134 | protected: | |
135 | virtual bool LoadIcon(wxIcon *icon, | |
136 | const wxString& name, long flags, | |
137 | int desiredWidth = -1, int desiredHeight = -1) = 0; | |
138 | }; | |
139 | ||
140 | class WXDLLEXPORT wxICOFileHandler : public wxIconHandler | |
141 | { | |
142 | public: | |
143 | wxICOFileHandler() : wxIconHandler(_T("ICO icon file"), | |
144 | _T("ico"), | |
145 | wxBITMAP_TYPE_ICO) | |
146 | { | |
147 | } | |
148 | ||
149 | protected: | |
150 | virtual bool LoadIcon(wxIcon *icon, | |
151 | const wxString& name, long flags, | |
152 | int desiredWidth = -1, int desiredHeight = -1); | |
153 | ||
154 | private: | |
155 | DECLARE_DYNAMIC_CLASS(wxICOFileHandler) | |
156 | }; | |
157 | ||
158 | class WXDLLEXPORT wxICOResourceHandler: public wxIconHandler | |
159 | { | |
160 | public: | |
161 | wxICOResourceHandler() : wxIconHandler(_T("ICO resource"), | |
162 | _T("ico"), | |
163 | wxBITMAP_TYPE_ICO_RESOURCE) | |
164 | { | |
165 | } | |
166 | ||
167 | protected: | |
168 | virtual bool LoadIcon(wxIcon *icon, | |
169 | const wxString& name, long flags, | |
170 | int desiredWidth = -1, int desiredHeight = -1); | |
171 | ||
172 | private: | |
173 | DECLARE_DYNAMIC_CLASS(wxICOResourceHandler) | |
174 | }; | |
175 | ||
176 | // ---------------------------------------------------------------------------- | |
177 | // wxWin macros | |
178 | // ---------------------------------------------------------------------------- | |
179 | ||
180 | IMPLEMENT_DYNAMIC_CLASS(wxBMPFileHandler, wxBitmapHandler) | |
181 | IMPLEMENT_DYNAMIC_CLASS(wxBMPResourceHandler, wxBitmapHandler) | |
182 | IMPLEMENT_DYNAMIC_CLASS(wxICOFileHandler, wxObject) | |
183 | IMPLEMENT_DYNAMIC_CLASS(wxICOResourceHandler, wxObject) | |
184 | ||
185 | // ---------------------------------------------------------------------------- | |
186 | // private functions | |
187 | // ---------------------------------------------------------------------------- | |
188 | ||
189 | #endif | |
190 | // __MICROWIN__ | |
191 | ||
192 | // ============================================================================ | |
193 | // implementation | |
194 | // ============================================================================ | |
195 | ||
196 | wxGDIImageHandlerList wxGDIImage::ms_handlers; | |
197 | ||
198 | // ---------------------------------------------------------------------------- | |
199 | // wxGDIImage functions forwarded to wxGDIImageRefData | |
200 | // ---------------------------------------------------------------------------- | |
201 | ||
202 | bool wxGDIImage::FreeResource(bool WXUNUSED(force)) | |
203 | { | |
204 | if ( !IsNull() ) | |
205 | { | |
206 | GetGDIImageData()->Free(); | |
207 | GetGDIImageData()->m_handle = 0; | |
208 | } | |
209 | ||
210 | return true; | |
211 | } | |
212 | ||
213 | WXHANDLE wxGDIImage::GetResourceHandle() const | |
214 | { | |
215 | return GetHandle(); | |
216 | } | |
217 | ||
218 | // ---------------------------------------------------------------------------- | |
219 | // wxGDIImage handler stuff | |
220 | // ---------------------------------------------------------------------------- | |
221 | ||
222 | void wxGDIImage::AddHandler(wxGDIImageHandler *handler) | |
223 | { | |
224 | ms_handlers.Append(handler); | |
225 | } | |
226 | ||
227 | void wxGDIImage::InsertHandler(wxGDIImageHandler *handler) | |
228 | { | |
229 | ms_handlers.Insert(handler); | |
230 | } | |
231 | ||
232 | bool wxGDIImage::RemoveHandler(const wxString& name) | |
233 | { | |
234 | wxGDIImageHandler *handler = FindHandler(name); | |
235 | if ( handler ) | |
236 | { | |
237 | ms_handlers.DeleteObject(handler); | |
238 | return true; | |
239 | } | |
240 | else | |
241 | return false; | |
242 | } | |
243 | ||
244 | wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& name) | |
245 | { | |
246 | wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst(); | |
247 | while ( node ) | |
248 | { | |
249 | wxGDIImageHandler *handler = node->GetData(); | |
250 | if ( handler->GetName() == name ) | |
251 | return handler; | |
252 | node = node->GetNext(); | |
253 | } | |
254 | ||
255 | return NULL; | |
256 | } | |
257 | ||
258 | wxGDIImageHandler *wxGDIImage::FindHandler(const wxString& extension, | |
259 | long type) | |
260 | { | |
261 | wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst(); | |
262 | while ( node ) | |
263 | { | |
264 | wxGDIImageHandler *handler = node->GetData(); | |
265 | if ( (handler->GetExtension() == extension) && | |
266 | (type == -1 || handler->GetType() == type) ) | |
267 | { | |
268 | return handler; | |
269 | } | |
270 | ||
271 | node = node->GetNext(); | |
272 | } | |
273 | return NULL; | |
274 | } | |
275 | ||
276 | wxGDIImageHandler *wxGDIImage::FindHandler(long type) | |
277 | { | |
278 | wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst(); | |
279 | while ( node ) | |
280 | { | |
281 | wxGDIImageHandler *handler = node->GetData(); | |
282 | if ( handler->GetType() == type ) | |
283 | return handler; | |
284 | ||
285 | node = node->GetNext(); | |
286 | } | |
287 | ||
288 | return NULL; | |
289 | } | |
290 | ||
291 | void wxGDIImage::CleanUpHandlers() | |
292 | { | |
293 | wxGDIImageHandlerList::compatibility_iterator node = ms_handlers.GetFirst(); | |
294 | while ( node ) | |
295 | { | |
296 | wxGDIImageHandler *handler = node->GetData(); | |
297 | wxGDIImageHandlerList::compatibility_iterator next = node->GetNext(); | |
298 | delete handler; | |
299 | ms_handlers.Erase( node ); | |
300 | node = next; | |
301 | } | |
302 | } | |
303 | ||
304 | void wxGDIImage::InitStandardHandlers() | |
305 | { | |
306 | #ifndef __WXMICROWIN__ | |
307 | AddHandler(new wxBMPResourceHandler); | |
308 | AddHandler(new wxBMPFileHandler); | |
309 | AddHandler(new wxICOResourceHandler); | |
310 | AddHandler(new wxICOFileHandler); | |
311 | #endif | |
312 | } | |
313 | ||
314 | #ifndef __WXMICROWIN__ | |
315 | ||
316 | // ---------------------------------------------------------------------------- | |
317 | // wxBitmap handlers | |
318 | // ---------------------------------------------------------------------------- | |
319 | ||
320 | bool wxBMPResourceHandler::LoadFile(wxBitmap *bitmap, | |
321 | const wxString& name, long WXUNUSED(flags), | |
322 | int WXUNUSED(desiredWidth), | |
323 | int WXUNUSED(desiredHeight)) | |
324 | { | |
325 | // TODO: load colourmap. | |
326 | bitmap->SetHBITMAP((WXHBITMAP)::LoadBitmap(wxGetInstance(), name)); | |
327 | ||
328 | if ( !bitmap->Ok() ) | |
329 | { | |
330 | // it's probably not found | |
331 | wxLogError(wxT("Can't load bitmap '%s' from resources! Check .rc file."), | |
332 | name.c_str()); | |
333 | ||
334 | return false; | |
335 | } | |
336 | ||
337 | BITMAP bm; | |
338 | if ( !::GetObject(GetHbitmapOf(*bitmap), sizeof(BITMAP), (LPSTR) &bm) ) | |
339 | { | |
340 | wxLogLastError(wxT("GetObject(HBITMAP)")); | |
341 | } | |
342 | ||
343 | bitmap->SetWidth(bm.bmWidth); | |
344 | bitmap->SetHeight(bm.bmHeight); | |
345 | bitmap->SetDepth(bm.bmBitsPixel); | |
346 | ||
347 | // use 0xc0c0c0 as transparent colour by default | |
348 | bitmap->SetMask(new wxMask(*bitmap, *wxLIGHT_GREY)); | |
349 | ||
350 | return true; | |
351 | } | |
352 | ||
353 | bool wxBMPFileHandler::LoadFile(wxBitmap *bitmap, | |
354 | const wxString& name, long WXUNUSED(flags), | |
355 | int WXUNUSED(desiredWidth), | |
356 | int WXUNUSED(desiredHeight)) | |
357 | { | |
358 | #if wxUSE_WXDIB | |
359 | wxCHECK_MSG( bitmap, false, _T("NULL bitmap in LoadFile") ); | |
360 | ||
361 | wxDIB dib(name); | |
362 | ||
363 | return dib.IsOk() && bitmap->CopyFromDIB(dib); | |
364 | #else | |
365 | return false; | |
366 | #endif | |
367 | } | |
368 | ||
369 | bool wxBMPFileHandler::SaveFile(wxBitmap *bitmap, | |
370 | const wxString& name, | |
371 | int WXUNUSED(type), | |
372 | const wxPalette * WXUNUSED(pal)) | |
373 | { | |
374 | #if wxUSE_WXDIB | |
375 | wxCHECK_MSG( bitmap, false, _T("NULL bitmap in SaveFile") ); | |
376 | ||
377 | wxDIB dib(*bitmap); | |
378 | ||
379 | return dib.Save(name); | |
380 | #else | |
381 | return false; | |
382 | #endif | |
383 | } | |
384 | ||
385 | // ---------------------------------------------------------------------------- | |
386 | // wxIcon handlers | |
387 | // ---------------------------------------------------------------------------- | |
388 | ||
389 | bool wxICOFileHandler::LoadIcon(wxIcon *icon, | |
390 | const wxString& name, | |
391 | long WXUNUSED(flags), | |
392 | int desiredWidth, int desiredHeight) | |
393 | { | |
394 | icon->UnRef(); | |
395 | ||
396 | // actual size | |
397 | wxSize size; | |
398 | ||
399 | HICON hicon = NULL; | |
400 | ||
401 | // Parse the filename: it may be of the form "filename;n" in order to | |
402 | // specify the nth icon in the file. | |
403 | // | |
404 | // For the moment, ignore the issue of possible semicolons in the | |
405 | // filename. | |
406 | int iconIndex = 0; | |
407 | wxString nameReal(name); | |
408 | wxString strIconIndex = name.AfterLast(wxT(';')); | |
409 | if (strIconIndex != name) | |
410 | { | |
411 | iconIndex = wxAtoi(strIconIndex); | |
412 | nameReal = name.BeforeLast(wxT(';')); | |
413 | } | |
414 | ||
415 | #if 0 | |
416 | // If we don't know what size icon we're looking for, | |
417 | // try to find out what's there. | |
418 | // Unfortunately this doesn't work, because ExtractIconEx | |
419 | // will scale the icon to the 'desired' size, even if that | |
420 | // size of icon isn't explicitly stored. So we would have | |
421 | // to parse the icon file outselves. | |
422 | if ( desiredWidth == -1 && | |
423 | desiredHeight == -1) | |
424 | { | |
425 | // Try loading a large icon first | |
426 | if ( ::ExtractIconEx(nameReal, iconIndex, &hicon, NULL, 1) == 1) | |
427 | { | |
428 | } | |
429 | // Then try loading a small icon | |
430 | else if ( ::ExtractIconEx(nameReal, iconIndex, NULL, &hicon, 1) == 1) | |
431 | { | |
432 | } | |
433 | } | |
434 | else | |
435 | #endif | |
436 | // were we asked for a large icon? | |
437 | if ( desiredWidth == ::GetSystemMetrics(SM_CXICON) && | |
438 | desiredHeight == ::GetSystemMetrics(SM_CYICON) ) | |
439 | { | |
440 | // get the specified large icon from file | |
441 | if ( !::ExtractIconEx(nameReal, iconIndex, &hicon, NULL, 1) ) | |
442 | { | |
443 | // it is not an error, but it might still be useful to be informed | |
444 | // about it optionally | |
445 | wxLogTrace(_T("iconload"), | |
446 | _T("No large icons found in the file '%s'."), | |
447 | name.c_str()); | |
448 | } | |
449 | } | |
450 | else if ( desiredWidth == ::GetSystemMetrics(SM_CXSMICON) && | |
451 | desiredHeight == ::GetSystemMetrics(SM_CYSMICON) ) | |
452 | { | |
453 | // get the specified small icon from file | |
454 | if ( !::ExtractIconEx(nameReal, iconIndex, NULL, &hicon, 1) ) | |
455 | { | |
456 | wxLogTrace(_T("iconload"), | |
457 | _T("No small icons found in the file '%s'."), | |
458 | name.c_str()); | |
459 | } | |
460 | } | |
461 | //else: not standard size, load below | |
462 | ||
463 | #ifndef __WXWINCE__ | |
464 | if ( !hicon ) | |
465 | { | |
466 | // take any size icon from the file by index | |
467 | hicon = ::ExtractIcon(wxGetInstance(), nameReal, iconIndex); | |
468 | } | |
469 | #endif | |
470 | ||
471 | if ( !hicon ) | |
472 | { | |
473 | wxLogSysError(_T("Failed to load icon from the file '%s'"), | |
474 | name.c_str()); | |
475 | ||
476 | return false; | |
477 | } | |
478 | ||
479 | size = wxGetHiconSize(hicon); | |
480 | ||
481 | if ( (desiredWidth != -1 && desiredWidth != size.x) || | |
482 | (desiredHeight != -1 && desiredHeight != size.y) ) | |
483 | { | |
484 | wxLogTrace(_T("iconload"), | |
485 | _T("Returning false from wxICOFileHandler::Load because of the size mismatch: actual (%d, %d), requested (%d, %d)"), | |
486 | size.x, size.y, | |
487 | desiredWidth, desiredHeight); | |
488 | ||
489 | ::DestroyIcon(hicon); | |
490 | ||
491 | return false; | |
492 | } | |
493 | ||
494 | icon->SetHICON((WXHICON)hicon); | |
495 | icon->SetSize(size.x, size.y); | |
496 | ||
497 | return icon->Ok(); | |
498 | } | |
499 | ||
500 | bool wxICOResourceHandler::LoadIcon(wxIcon *icon, | |
501 | const wxString& name, | |
502 | long WXUNUSED(flags), | |
503 | int desiredWidth, int desiredHeight) | |
504 | { | |
505 | HICON hicon; | |
506 | ||
507 | // do we need the icon of the specific size or would any icon do? | |
508 | bool hasSize = desiredWidth != -1 || desiredHeight != -1; | |
509 | ||
510 | wxASSERT_MSG( !hasSize || (desiredWidth != -1 && desiredHeight != -1), | |
511 | _T("width and height should be either both -1 or not") ); | |
512 | ||
513 | // try to load the icon from this program first to allow overriding the | |
514 | // standard icons (although why one would want to do it considering that | |
515 | // we already have wxApp::GetStdIcon() is unclear) | |
516 | ||
517 | // note that we can't just always call LoadImage() because it seems to do | |
518 | // some icon rescaling internally which results in very ugly 16x16 icons | |
519 | if ( hasSize ) | |
520 | { | |
521 | hicon = (HICON)::LoadImage(wxGetInstance(), name, IMAGE_ICON, | |
522 | desiredWidth, desiredHeight, | |
523 | LR_DEFAULTCOLOR); | |
524 | } | |
525 | else | |
526 | { | |
527 | hicon = ::LoadIcon(wxGetInstance(), name); | |
528 | } | |
529 | ||
530 | // next check if it's not a standard icon | |
531 | #ifndef __WXWINCE__ | |
532 | if ( !hicon && !hasSize ) | |
533 | { | |
534 | static const struct | |
535 | { | |
536 | const wxChar *name; | |
537 | LPTSTR id; | |
538 | } stdIcons[] = | |
539 | { | |
540 | { wxT("wxICON_QUESTION"), IDI_QUESTION }, | |
541 | { wxT("wxICON_WARNING"), IDI_EXCLAMATION }, | |
542 | { wxT("wxICON_ERROR"), IDI_HAND }, | |
543 | { wxT("wxICON_INFORMATION"), IDI_ASTERISK }, | |
544 | }; | |
545 | ||
546 | for ( size_t nIcon = 0; !hicon && nIcon < WXSIZEOF(stdIcons); nIcon++ ) | |
547 | { | |
548 | if ( name == stdIcons[nIcon].name ) | |
549 | { | |
550 | hicon = ::LoadIcon((HINSTANCE)NULL, stdIcons[nIcon].id); | |
551 | } | |
552 | } | |
553 | } | |
554 | #endif | |
555 | ||
556 | wxSize size = wxGetHiconSize(hicon); | |
557 | icon->SetSize(size.x, size.y); | |
558 | ||
559 | icon->SetHICON((WXHICON)hicon); | |
560 | ||
561 | return icon->Ok(); | |
562 | } | |
563 | ||
564 | // ---------------------------------------------------------------------------- | |
565 | // private functions | |
566 | // ---------------------------------------------------------------------------- | |
567 | ||
568 | wxSize wxGetHiconSize(HICON WXUNUSED_IN_WINCE(hicon)) | |
569 | { | |
570 | // default icon size on this hardware | |
571 | // usually 32x32 but can be other (smaller) on pocket devices | |
572 | wxSize size(::GetSystemMetrics(SM_CXICON), ::GetSystemMetrics(SM_CYICON)); | |
573 | ||
574 | #ifndef __WXWINCE__ | |
575 | if (hicon) | |
576 | { | |
577 | ICONINFO info; | |
578 | if ( !::GetIconInfo(hicon, &info) ) | |
579 | { | |
580 | wxLogLastError(wxT("GetIconInfo")); | |
581 | } | |
582 | else | |
583 | { | |
584 | HBITMAP hbmp = info.hbmMask; | |
585 | if ( hbmp ) | |
586 | { | |
587 | BITMAP bm; | |
588 | if ( ::GetObject(hbmp, sizeof(BITMAP), (LPSTR) &bm) ) | |
589 | { | |
590 | size = wxSize(bm.bmWidth, bm.bmHeight); | |
591 | } | |
592 | ||
593 | ::DeleteObject(info.hbmMask); | |
594 | } | |
595 | if ( info.hbmColor ) | |
596 | ::DeleteObject(info.hbmColor); | |
597 | } | |
598 | } | |
599 | #endif | |
600 | ||
601 | return size; | |
602 | } | |
603 | ||
604 | #endif // __WXMICROWIN__ |