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1 /////////////////////////////////////////////////////////////////////////////
2 // Name: common/appcmn.cpp
3 // Purpose: wxAppConsole and wxAppBase methods common to all platforms
4 // Author: Vadim Zeitlin
5 // Modified by:
6 // Created: 18.10.99
7 // RCS-ID: $Id$
8 // Copyright: (c) Vadim Zeitlin
9 // Licence: wxWindows licence
10 /////////////////////////////////////////////////////////////////////////////
11
12 // ============================================================================
13 // declarations
14 // ============================================================================
15
16 // ---------------------------------------------------------------------------
17 // headers
18 // ---------------------------------------------------------------------------
19
20 #if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
21 #pragma implementation "appbase.h"
22 #endif
23
24 // For compilers that support precompilation, includes "wx.h".
25 #include "wx/wxprec.h"
26
27 #if defined(__BORLANDC__)
28 #pragma hdrstop
29 #endif
30
31 #ifndef WX_PRECOMP
32 #include "wx/app.h"
33 #include "wx/bitmap.h"
34 #include "wx/intl.h"
35 #include "wx/list.h"
36 #include "wx/log.h"
37 #include "wx/msgdlg.h"
38 #include "wx/bitmap.h"
39 #include "wx/confbase.h"
40 #endif
41
42 #include "wx/apptrait.h"
43 #include "wx/cmdline.h"
44 #include "wx/evtloop.h"
45 #include "wx/msgout.h"
46 #include "wx/thread.h"
47 #include "wx/utils.h"
48 #include "wx/ptr_scpd.h"
49
50 #if defined(__WXMSW__) && !defined(__PALMOS__)
51 #include "wx/msw/private.h" // includes windows.h for LOGFONT
52 #endif
53
54 #if wxUSE_FONTMAP
55 #include "wx/fontmap.h"
56 #endif // wxUSE_FONTMAP
57
58 // DLL options compatibility check:
59 #include "wx/build.h"
60 WX_CHECK_BUILD_OPTIONS("wxCore")
61
62
63 // ----------------------------------------------------------------------------
64 // wxEventLoopPtr
65 // ----------------------------------------------------------------------------
66
67 // this defines wxEventLoopPtr
68 wxDEFINE_TIED_SCOPED_PTR_TYPE(wxEventLoop);
69
70 // ============================================================================
71 // wxAppBase implementation
72 // ============================================================================
73
74 // ----------------------------------------------------------------------------
75 // initialization
76 // ----------------------------------------------------------------------------
77
78 wxAppBase::wxAppBase()
79 {
80 m_topWindow = (wxWindow *)NULL;
81 m_useBestVisual = false;
82 m_isActive = true;
83
84 #if wxUSE_EVTLOOP_IN_APP
85 m_mainLoop = NULL;
86 #endif // wxUSE_EVTLOOP_IN_APP
87
88 // We don't want to exit the app if the user code shows a dialog from its
89 // OnInit() -- but this is what would happen if we set m_exitOnFrameDelete
90 // to Yes initially as this dialog would be the last top level window.
91 // OTOH, if we set it to No initially we'll have to overwrite it with Yes
92 // when we enter our OnRun() because we do want the default behaviour from
93 // then on. But this would be a problem if the user code calls
94 // SetExitOnFrameDelete(false) from OnInit().
95 //
96 // So we use the special "Later" value which is such that
97 // GetExitOnFrameDelete() returns false for it but which we know we can
98 // safely (i.e. without losing the effect of the users SetExitOnFrameDelete
99 // call) overwrite in OnRun()
100 m_exitOnFrameDelete = Later;
101 }
102
103 bool wxAppBase::Initialize(int& argc, wxChar **argv)
104 {
105 if ( !wxAppConsole::Initialize(argc, argv) )
106 return false;
107
108 #if wxUSE_THREADS
109 wxPendingEventsLocker = new wxCriticalSection;
110 #endif
111
112 wxInitializeStockLists();
113 wxInitializeStockObjects();
114
115 wxBitmap::InitStandardHandlers();
116
117 return true;
118 }
119
120 // ----------------------------------------------------------------------------
121 // cleanup
122 // ----------------------------------------------------------------------------
123
124 wxAppBase::~wxAppBase()
125 {
126 // this destructor is required for Darwin
127 }
128
129 void wxAppBase::CleanUp()
130 {
131 // clean up all the pending objects
132 DeletePendingObjects();
133
134 // and any remaining TLWs (they remove themselves from wxTopLevelWindows
135 // when destroyed, so iterate until none are left)
136 while ( !wxTopLevelWindows.empty() )
137 {
138 // do not use Destroy() here as it only puts the TLW in pending list
139 // but we want to delete them now
140 delete wxTopLevelWindows.GetFirst()->GetData();
141 }
142
143 // undo everything we did in Initialize() above
144 wxBitmap::CleanUpHandlers();
145
146 wxDeleteStockObjects();
147
148 wxDeleteStockLists();
149
150 delete wxTheColourDatabase;
151 wxTheColourDatabase = NULL;
152
153 delete wxPendingEvents;
154 wxPendingEvents = NULL;
155
156 #if wxUSE_THREADS
157 delete wxPendingEventsLocker;
158 wxPendingEventsLocker = NULL;
159
160 #if wxUSE_VALIDATORS
161 // If we don't do the following, we get an apparent memory leak.
162 ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
163 #endif // wxUSE_VALIDATORS
164 #endif // wxUSE_THREADS
165 }
166
167 #if wxUSE_CMDLINE_PARSER
168
169 // ----------------------------------------------------------------------------
170 // GUI-specific command line options handling
171 // ----------------------------------------------------------------------------
172
173 #define OPTION_THEME _T("theme")
174 #define OPTION_MODE _T("mode")
175
176 void wxAppBase::OnInitCmdLine(wxCmdLineParser& parser)
177 {
178 // first add the standard non GUI options
179 wxAppConsole::OnInitCmdLine(parser);
180
181 // the standard command line options
182 static const wxCmdLineEntryDesc cmdLineGUIDesc[] =
183 {
184 #ifdef __WXUNIVERSAL__
185 {
186 wxCMD_LINE_OPTION,
187 _T(""),
188 OPTION_THEME,
189 gettext_noop("specify the theme to use"),
190 wxCMD_LINE_VAL_STRING,
191 0x0
192 },
193 #endif // __WXUNIVERSAL__
194
195 #if defined(__WXMGL__)
196 // VS: this is not specific to wxMGL, all fullscreen (framebuffer) ports
197 // should provide this option. That's why it is in common/appcmn.cpp
198 // and not mgl/app.cpp
199 {
200 wxCMD_LINE_OPTION,
201 _T(""),
202 OPTION_MODE,
203 gettext_noop("specify display mode to use (e.g. 640x480-16)"),
204 wxCMD_LINE_VAL_STRING,
205 0x0
206 },
207 #endif // __WXMGL__
208
209 // terminator
210 {
211 wxCMD_LINE_NONE,
212 _T(""),
213 _T(""),
214 _T(""),
215 wxCMD_LINE_VAL_NONE,
216 0x0
217 }
218 };
219
220 parser.SetDesc(cmdLineGUIDesc);
221 }
222
223 bool wxAppBase::OnCmdLineParsed(wxCmdLineParser& parser)
224 {
225 #ifdef __WXUNIVERSAL__
226 wxString themeName;
227 if ( parser.Found(OPTION_THEME, &themeName) )
228 {
229 wxTheme *theme = wxTheme::Create(themeName);
230 if ( !theme )
231 {
232 wxLogError(_("Unsupported theme '%s'."), themeName.c_str());
233 return false;
234 }
235
236 // Delete the defaultly created theme and set the new theme.
237 delete wxTheme::Get();
238 wxTheme::Set(theme);
239 }
240 #endif // __WXUNIVERSAL__
241
242 #if defined(__WXMGL__)
243 wxString modeDesc;
244 if ( parser.Found(OPTION_MODE, &modeDesc) )
245 {
246 unsigned w, h, bpp;
247 if ( wxSscanf(modeDesc.c_str(), _T("%ux%u-%u"), &w, &h, &bpp) != 3 )
248 {
249 wxLogError(_("Invalid display mode specification '%s'."), modeDesc.c_str());
250 return false;
251 }
252
253 if ( !SetDisplayMode(wxVideoMode(w, h, bpp)) )
254 return false;
255 }
256 #endif // __WXMGL__
257
258 return wxAppConsole::OnCmdLineParsed(parser);
259 }
260
261 #endif // wxUSE_CMDLINE_PARSER
262
263 // ----------------------------------------------------------------------------
264 // main event loop implementation
265 // ----------------------------------------------------------------------------
266
267 int wxAppBase::MainLoop()
268 {
269 #if wxUSE_EVTLOOP_IN_APP
270 wxEventLoopTiedPtr mainLoop(&m_mainLoop, new wxEventLoop);
271
272 return m_mainLoop->Run();
273 #else // !wxUSE_EVTLOOP_IN_APP
274 return 0;
275 #endif // wxUSE_EVTLOOP_IN_APP/!wxUSE_EVTLOOP_IN_APP
276 }
277
278 void wxAppBase::ExitMainLoop()
279 {
280 #if wxUSE_EVTLOOP_IN_APP
281 // we should exit from the main event loop, not just any currently active
282 // (e.g. modal dialog) event loop
283 if ( m_mainLoop && m_mainLoop->IsRunning() )
284 {
285 m_mainLoop->Exit(0);
286 }
287 #endif // wxUSE_EVTLOOP_IN_APP
288 }
289
290 bool wxAppBase::Pending()
291 {
292 #if wxUSE_EVTLOOP_IN_APP
293 // use the currently active message loop here, not m_mainLoop, because if
294 // we're showing a modal dialog (with its own event loop) currently the
295 // main event loop is not running anyhow
296 wxEventLoop * const loop = wxEventLoop::GetActive();
297
298 return loop && loop->Pending();
299 #else // wxUSE_EVTLOOP_IN_APP
300 return false;
301 #endif // wxUSE_EVTLOOP_IN_APP/!wxUSE_EVTLOOP_IN_APP
302 }
303
304 bool wxAppBase::Dispatch()
305 {
306 #if wxUSE_EVTLOOP_IN_APP
307 // see comment in Pending()
308 wxEventLoop * const loop = wxEventLoop::GetActive();
309
310 return loop && loop->Dispatch();
311 #else // wxUSE_EVTLOOP_IN_APP
312 return true;
313 #endif // wxUSE_EVTLOOP_IN_APP/!wxUSE_EVTLOOP_IN_APP
314 }
315
316 // ----------------------------------------------------------------------------
317 // OnXXX() hooks
318 // ----------------------------------------------------------------------------
319
320 bool wxAppBase::OnInitGui()
321 {
322 #ifdef __WXUNIVERSAL__
323 if ( !wxTheme::Get() && !wxTheme::CreateDefault() )
324 return false;
325 #endif // __WXUNIVERSAL__
326
327 return true;
328 }
329
330 int wxAppBase::OnRun()
331 {
332 // see the comment in ctor: if the initial value hasn't been changed, use
333 // the default Yes from now on
334 if ( m_exitOnFrameDelete == Later )
335 {
336 m_exitOnFrameDelete = Yes;
337 }
338 //else: it has been changed, assume the user knows what he is doing
339
340 return MainLoop();
341 }
342
343 int wxAppBase::OnExit()
344 {
345 #ifdef __WXUNIVERSAL__
346 delete wxTheme::Set(NULL);
347 #endif // __WXUNIVERSAL__
348
349 return wxAppConsole::OnExit();
350 }
351
352 void wxAppBase::Exit()
353 {
354 ExitMainLoop();
355 }
356
357 wxAppTraits *wxAppBase::CreateTraits()
358 {
359 return new wxGUIAppTraits;
360 }
361
362 // ----------------------------------------------------------------------------
363 // misc
364 // ----------------------------------------------------------------------------
365
366 void wxAppBase::SetActive(bool active, wxWindow * WXUNUSED(lastFocus))
367 {
368 if ( active == m_isActive )
369 return;
370
371 m_isActive = active;
372
373 wxActivateEvent event(wxEVT_ACTIVATE_APP, active);
374 event.SetEventObject(this);
375
376 (void)ProcessEvent(event);
377 }
378
379 void wxAppBase::DeletePendingObjects()
380 {
381 wxList::compatibility_iterator node = wxPendingDelete.GetFirst();
382 while (node)
383 {
384 wxObject *obj = node->GetData();
385
386 delete obj;
387
388 if (wxPendingDelete.Member(obj))
389 wxPendingDelete.Erase(node);
390
391 // Deleting one object may have deleted other pending
392 // objects, so start from beginning of list again.
393 node = wxPendingDelete.GetFirst();
394 }
395 }
396
397 // Returns true if more time is needed.
398 bool wxAppBase::ProcessIdle()
399 {
400 wxIdleEvent event;
401 bool needMore = false;
402 wxWindowList::compatibility_iterator node = wxTopLevelWindows.GetFirst();
403 while (node)
404 {
405 wxWindow* win = node->GetData();
406 if (SendIdleEvents(win, event))
407 needMore = true;
408 node = node->GetNext();
409 }
410
411 event.SetEventObject(this);
412 (void) ProcessEvent(event);
413 if (event.MoreRequested())
414 needMore = true;
415
416 wxUpdateUIEvent::ResetUpdateTime();
417
418 return needMore;
419 }
420
421 // Send idle event to window and all subwindows
422 bool wxAppBase::SendIdleEvents(wxWindow* win, wxIdleEvent& event)
423 {
424 bool needMore = false;
425
426 win->OnInternalIdle();
427
428 if (wxIdleEvent::CanSend(win))
429 {
430 event.SetEventObject(win);
431 win->GetEventHandler()->ProcessEvent(event);
432
433 if (event.MoreRequested())
434 needMore = true;
435 }
436 wxWindowList::compatibility_iterator node = win->GetChildren().GetFirst();
437 while ( node )
438 {
439 wxWindow *child = node->GetData();
440 if (SendIdleEvents(child, event))
441 needMore = true;
442
443 node = node->GetNext();
444 }
445
446 return needMore;
447 }
448
449 void wxAppBase::OnIdle(wxIdleEvent& WXUNUSED(event))
450 {
451 // If there are pending events, we must process them: pending events
452 // are either events to the threads other than main or events posted
453 // with wxPostEvent() functions
454 // GRG: I have moved this here so that all pending events are processed
455 // before starting to delete any objects. This behaves better (in
456 // particular, wrt wxPostEvent) and is coherent with wxGTK's current
457 // behaviour. Changed Feb/2000 before 2.1.14
458 ProcessPendingEvents();
459
460 // 'Garbage' collection of windows deleted with Close().
461 DeletePendingObjects();
462
463 #if wxUSE_LOG
464 // flush the logged messages if any
465 wxLog::FlushActive();
466 #endif // wxUSE_LOG
467
468 }
469
470 // ----------------------------------------------------------------------------
471 // wxGUIAppTraitsBase
472 // ----------------------------------------------------------------------------
473
474 #if wxUSE_LOG
475
476 wxLog *wxGUIAppTraitsBase::CreateLogTarget()
477 {
478 #if wxUSE_LOGGUI
479 return new wxLogGui;
480 #else
481 // wem ust have something!
482 return new wxLogStderr;
483 #endif
484 }
485
486 #endif // wxUSE_LOG
487
488 wxMessageOutput *wxGUIAppTraitsBase::CreateMessageOutput()
489 {
490 // The standard way of printing help on command line arguments (app --help)
491 // is (according to common practice):
492 // - console apps: to stderr (on any platform)
493 // - GUI apps: stderr on Unix platforms (!)
494 // message box under Windows and others
495 #ifdef __UNIX__
496 return new wxMessageOutputStderr;
497 #else // !__UNIX__
498 // wxMessageOutputMessageBox doesn't work under Motif
499 #ifdef __WXMOTIF__
500 return new wxMessageOutputLog;
501 #else
502 return new wxMessageOutputMessageBox;
503 #endif
504 #endif // __UNIX__/!__UNIX__
505 }
506
507 #if wxUSE_FONTMAP
508
509 wxFontMapper *wxGUIAppTraitsBase::CreateFontMapper()
510 {
511 return new wxFontMapper;
512 }
513
514 #endif // wxUSE_FONTMAP
515
516 wxRendererNative *wxGUIAppTraitsBase::CreateRenderer()
517 {
518 // use the default native renderer by default
519 return NULL;
520 }
521
522 #ifdef __WXDEBUG__
523
524 bool wxGUIAppTraitsBase::ShowAssertDialog(const wxString& msg)
525 {
526 // under MSW we prefer to use the base class version using ::MessageBox()
527 // even if wxMessageBox() is available because it has less chances to
528 // double fault our app than our wxMessageBox()
529 #if defined(__WXMSW__) || !wxUSE_MSGDLG
530 return wxAppTraitsBase::ShowAssertDialog(msg);
531 #else // wxUSE_MSGDLG
532 // this message is intentionally not translated -- it is for
533 // developpers only
534 wxString msgDlg(msg);
535 msgDlg += wxT("\nDo you want to stop the program?\n")
536 wxT("You can also choose [Cancel] to suppress ")
537 wxT("further warnings.");
538
539 switch ( wxMessageBox(msgDlg, wxT("wxWidgets Debug Alert"),
540 wxYES_NO | wxCANCEL | wxICON_STOP ) )
541 {
542 case wxYES:
543 wxTrap();
544 break;
545
546 case wxCANCEL:
547 // no more asserts
548 return true;
549
550 //case wxNO: nothing to do
551 }
552
553 return false;
554 #endif // !wxUSE_MSGDLG/wxUSE_MSGDLG
555 }
556
557 #endif // __WXDEBUG__
558
559 bool wxGUIAppTraitsBase::HasStderr()
560 {
561 // we consider that under Unix stderr always goes somewhere, even if the
562 // user doesn't always see it under GUI desktops
563 #ifdef __UNIX__
564 return true;
565 #else
566 return false;
567 #endif
568 }
569
570 void wxGUIAppTraitsBase::ScheduleForDestroy(wxObject *object)
571 {
572 if ( !wxPendingDelete.Member(object) )
573 wxPendingDelete.Append(object);
574 }
575
576 void wxGUIAppTraitsBase::RemoveFromPendingDelete(wxObject *object)
577 {
578 wxPendingDelete.DeleteObject(object);
579 }
580
581 #if wxUSE_SOCKETS
582
583 #if defined(__UNIX__) || defined(__DARWIN__) || defined(__OS2__)
584 #include "wx/unix/gsockunx.h"
585 #elif defined(__WINDOWS__)
586 #include "wx/msw/gsockmsw.h"
587 #elif defined(__WXMAC__)
588 #include <MacHeaders.c>
589 #define OTUNIXERRORS 1
590 #include <OpenTransport.h>
591 #include <OpenTransportProviders.h>
592 #include <OpenTptInternet.h>
593
594 #include "wx/mac/gsockmac.h"
595 #else
596 #error "Must include correct GSocket header here"
597 #endif
598
599 GSocketGUIFunctionsTable* wxGUIAppTraitsBase::GetSocketGUIFunctionsTable()
600 {
601 #if defined(__WXMAC__) && !defined(__DARWIN__)
602 // NB: wxMac CFM does not have any GUI-specific functions in gsocket.c and
603 // so it doesn't need this table at all
604 return NULL;
605 #else // !__WXMAC__ || __DARWIN__
606 static GSocketGUIFunctionsTableConcrete table;
607 return &table;
608 #endif // !__WXMAC__ || __DARWIN__
609 }
610
611 #endif
612