1 /////////////////////////////////////////////////////////////////////////////
2 // Name: src/gtk1/app.cpp
4 // Author: Robert Roebling
6 // Copyright: (c) 1998 Robert Roebling, Julian Smart
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
10 // For compilers that support precompilation, includes "wx.h".
11 #include "wx/wxprec.h"
19 #include "wx/dialog.h"
20 #include "wx/settings.h"
21 #include "wx/msgdlg.h"
22 #include "wx/memory.h"
24 #include "wx/gdicmn.h"
26 #include "wx/module.h"
30 #include "wx/filename.h"
31 #include "wx/thread.h"
37 #ifdef __WXUNIVERSAL__
38 #include "wx/univ/theme.h"
39 #include "wx/univ/renderer.h"
43 #include "wx/thread.h"
52 // bug in the OpenBSD headers: at least in 3.1 there is no extern "C"
53 // in neither poll.h nor sys/poll.h which results in link errors later
66 // we implement poll() ourselves using select() which is supposed exist in
68 #include <sys/types.h>
71 #ifdef HAVE_SYS_SELECT_H
72 #include <sys/select.h>
74 #endif // HAVE_POLL/!HAVE_POLL
76 #include "wx/unix/private.h"
77 #include "wx/gtk1/win_gtk.h"
81 //-----------------------------------------------------------------------------
83 //-----------------------------------------------------------------------------
85 bool g_mainThreadLocked
= false;
86 gint g_pendingTag
= 0;
88 static GtkWidget
*gs_RootWindow
= NULL
;
90 //-----------------------------------------------------------------------------
92 //-----------------------------------------------------------------------------
96 void wxapp_install_idle_handler();
99 static wxMutex gs_idleTagsMutex
;
103 //-----------------------------------------------------------------------------
105 //-----------------------------------------------------------------------------
107 // RR/KH: The wxMutexGui calls are not needed on GTK2 according to
108 // the GTK faq, http://www.gtk.org/faq/#AEN500
109 // The calls to gdk_threads_enter() and leave() are specifically noted
110 // as not being necessary. The MutexGui calls are still left in for GTK1.
111 // Eliminating the MutexGui calls fixes the long-standing "random" lockup
112 // when using wxPostEvent (which calls WakeUpIdle) from a thread.
114 void wxApp::WakeUpIdle()
117 if (!wxThread::IsMain())
119 #endif // wxUSE_THREADS
121 wxapp_install_idle_handler();
124 if (!wxThread::IsMain())
126 #endif // wxUSE_THREADS
129 //-----------------------------------------------------------------------------
131 //-----------------------------------------------------------------------------
133 // the callback functions must be extern "C" to comply with GTK+ declarations
137 static gint
wxapp_pending_callback( gpointer
WXUNUSED(data
) )
139 if (!wxTheApp
) return TRUE
;
141 // When getting called from GDK's time-out handler
142 // we are no longer within GDK's grab on the GUI
143 // thread so we must lock it here ourselves.
146 // Sent idle event to all who request them.
147 wxTheApp
->ProcessPendingEvents();
151 wxMutexLocker
lock(gs_idleTagsMutex
);
156 // Flush the logged messages if any.
158 wxLog::FlushActive();
161 // Release lock again
164 // Return FALSE to indicate that no more idle events are
165 // to be sent (single shot instead of continuous stream)
169 static gint
wxapp_idle_callback( gpointer
WXUNUSED(data
) )
175 // don't generate the idle events while the assert modal dialog is shown,
176 // this completely confuses the apps which don't expect to be reentered
177 // from some safely-looking functions
178 if ( wxTheApp
->IsInAssert() )
180 // But repaint the assertion message if necessary
181 if (wxTopLevelWindows
.GetCount() > 0)
183 wxWindow
* win
= (wxWindow
*) wxTopLevelWindows
.GetLast()->GetData();
184 if (win
->IsKindOf(CLASSINFO(wxGenericMessageDialog
)))
185 win
->OnInternalIdle();
189 #endif // wxDEBUG_LEVEL
191 // When getting called from GDK's time-out handler
192 // we are no longer within GDK's grab on the GUI
193 // thread so we must lock it here ourselves.
196 // Indicate that we are now in idle mode and event handlers
197 // will have to reinstall the idle handler again.
200 wxMutexLocker
lock(gs_idleTagsMutex
);
203 wxTheApp
->m_idleTag
= 0;
206 // Send idle event to all who request them as long as
207 // no events have popped up in the event queue.
208 while (wxTheApp
->ProcessIdle() && (gtk_events_pending() == 0))
211 // Release lock again
214 // Return FALSE to indicate that no more idle events are
215 // to be sent (single shot instead of continuous stream).
223 #define wxPollFd pollfd
226 typedef GPollFD wxPollFd
;
228 int wxPoll(wxPollFd
*ufds
, unsigned int nfds
, int timeout
)
230 // convert timeout from ms to struct timeval (s/us)
232 tv_timeout
.tv_sec
= timeout
/1000;
233 tv_timeout
.tv_usec
= (timeout%1000
)*1000;
235 // remember the highest fd used here
238 // and fill the sets for select()
243 wxFD_ZERO(&writefds
);
244 wxFD_ZERO(&exceptfds
);
247 for ( i
= 0; i
< nfds
; i
++ )
249 wxASSERT_MSG( ufds
[i
].fd
< FD_SETSIZE
, wxT("fd out of range") );
251 if ( ufds
[i
].events
& G_IO_IN
)
252 wxFD_SET(ufds
[i
].fd
, &readfds
);
254 if ( ufds
[i
].events
& G_IO_PRI
)
255 wxFD_SET(ufds
[i
].fd
, &exceptfds
);
257 if ( ufds
[i
].events
& G_IO_OUT
)
258 wxFD_SET(ufds
[i
].fd
, &writefds
);
260 if ( ufds
[i
].fd
> fdMax
)
265 int res
= select(fdMax
, &readfds
, &writefds
, &exceptfds
, &tv_timeout
);
267 // translate the results back
268 for ( i
= 0; i
< nfds
; i
++ )
272 if ( wxFD_ISSET(ufds
[i
].fd
, &readfds
) )
273 ufds
[i
].revents
|= G_IO_IN
;
275 if ( wxFD_ISSET(ufds
[i
].fd
, &exceptfds
) )
276 ufds
[i
].revents
|= G_IO_PRI
;
278 if ( wxFD_ISSET(ufds
[i
].fd
, &writefds
) )
279 ufds
[i
].revents
|= G_IO_OUT
;
285 #endif // HAVE_POLL/!HAVE_POLL
287 static gint
wxapp_poll_func( GPollFD
*ufds
, guint nfds
, gint timeout
)
292 g_mainThreadLocked
= true;
294 // we rely on the fact that glib GPollFD struct is really just pollfd but
295 // I wonder how wise is this in the long term (VZ)
296 gint res
= wxPoll( (wxPollFd
*) ufds
, nfds
, timeout
);
299 g_mainThreadLocked
= false;
306 #endif // wxUSE_THREADS
310 void wxapp_install_idle_handler()
313 wxMutexLocker
lock(gs_idleTagsMutex
);
316 // Don't install the handler if it's already installed. This test *MUST*
317 // be done when gs_idleTagsMutex is locked!
321 // GD: this assert is raised when using the thread sample (which works)
322 // so the test is probably not so easy. Can widget callbacks be
323 // triggered from child threads and, if so, for which widgets?
324 // wxASSERT_MSG( wxThread::IsMain() || gs_WakeUpIdle, wxT("attempt to install idle handler from widget callback in child thread (should be exclusively from wxWakeUpIdle)") );
326 wxASSERT_MSG( wxTheApp
->m_idleTag
== 0, wxT("attempt to install idle handler twice") );
330 if (g_pendingTag
== 0)
331 g_pendingTag
= gtk_idle_add_priority( 900, wxapp_pending_callback
, (gpointer
) NULL
);
333 // This routine gets called by all event handlers
334 // indicating that the idle is over. It may also
335 // get called from other thread for sending events
336 // to the main thread (and processing these in
337 // idle time). Very low priority.
338 wxTheApp
->m_idleTag
= gtk_idle_add_priority( 1000, wxapp_idle_callback
, (gpointer
) NULL
);
341 static bool wxOKlibc()
343 #if defined(__UNIX__) && defined(__GLIBC__)
344 // glibc 2.0 uses UTF-8 even when it shouldn't
346 if ((MB_CUR_MAX
== 2) &&
347 (wxMB2WC(&res
, "\xdd\xa5", 1) == 1) &&
350 // this is UTF-8 allright, check whether that's what we want
351 char *cur_locale
= setlocale(LC_CTYPE
, NULL
);
352 if ((strlen(cur_locale
) < 4) ||
353 (strcasecmp(cur_locale
+ strlen(cur_locale
) - 4, "utf8")) ||
354 (strcasecmp(cur_locale
+ strlen(cur_locale
) - 5, "utf-8"))) {
355 // nope, don't use libc conversion
363 //-----------------------------------------------------------------------------
364 // Access to the root window global
365 //-----------------------------------------------------------------------------
367 GtkWidget
* wxGetRootWindow()
369 if (gs_RootWindow
== NULL
)
371 gs_RootWindow
= gtk_window_new( GTK_WINDOW_TOPLEVEL
);
372 gtk_widget_realize( gs_RootWindow
);
374 return gs_RootWindow
;
377 //-----------------------------------------------------------------------------
379 //-----------------------------------------------------------------------------
381 IMPLEMENT_DYNAMIC_CLASS(wxApp
,wxEvtHandler
)
385 m_isInAssert
= false;
389 wxapp_install_idle_handler();
392 g_main_set_poll_func( wxapp_poll_func
);
395 m_colorCube
= (unsigned char*) NULL
;
397 // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
398 m_glVisualInfo
= NULL
;
404 if (m_idleTag
) gtk_idle_remove( m_idleTag
);
406 if (m_colorCube
) free(m_colorCube
);
409 bool wxApp::OnInitGui()
411 if ( !wxAppBase::OnInitGui() )
414 GdkVisual
*visual
= gdk_visual_get_system();
416 // if this is a wxGLApp (derived from wxApp), and we've already
417 // chosen a specific visual, then derive the GdkVisual from that
418 if (m_glVisualInfo
!= NULL
)
420 GdkVisual
* vis
= gdkx_visual_get(
421 ((XVisualInfo
*) m_glVisualInfo
) ->visualid
);
422 gtk_widget_set_default_visual( vis
);
424 GdkColormap
*colormap
= gdk_colormap_new( vis
, FALSE
);
425 gtk_widget_set_default_colormap( colormap
);
430 // On some machines, the default visual is just 256 colours, so
431 // we make sure we get the best. This can sometimes be wasteful.
434 if ((gdk_visual_get_best() != gdk_visual_get_system()) && (m_useBestVisual
))
436 GdkVisual
* vis
= gdk_visual_get_best();
437 gtk_widget_set_default_visual( vis
);
439 GdkColormap
*colormap
= gdk_colormap_new( vis
, FALSE
);
440 gtk_widget_set_default_colormap( colormap
);
445 // Nothing to do for 15, 16, 24, 32 bit displays
446 if (visual
->depth
> 8) return TRUE
;
448 // initialize color cube for 8-bit color reduction dithering
450 GdkColormap
*cmap
= gtk_widget_get_default_colormap();
452 m_colorCube
= (unsigned char*)malloc(32 * 32 * 32);
454 for (int r
= 0; r
< 32; r
++)
456 for (int g
= 0; g
< 32; g
++)
458 for (int b
= 0; b
< 32; b
++)
460 int rr
= (r
<< 3) | (r
>> 2);
461 int gg
= (g
<< 3) | (g
>> 2);
462 int bb
= (b
<< 3) | (b
>> 2);
466 GdkColor
*colors
= cmap
->colors
;
471 for (int i
= 0; i
< cmap
->size
; i
++)
473 int rdiff
= ((rr
<< 8) - colors
[i
].red
);
474 int gdiff
= ((gg
<< 8) - colors
[i
].green
);
475 int bdiff
= ((bb
<< 8) - colors
[i
].blue
);
476 int sum
= ABS (rdiff
) + ABS (gdiff
) + ABS (bdiff
);
479 index
= i
; max
= sum
;
485 // assume 8-bit true or static colors. this really exists
486 GdkVisual
* vis
= gdk_colormap_get_visual( cmap
);
487 index
= (r
>> (5 - vis
->red_prec
)) << vis
->red_shift
;
488 index
|= (g
>> (5 - vis
->green_prec
)) << vis
->green_shift
;
489 index
|= (b
>> (5 - vis
->blue_prec
)) << vis
->blue_shift
;
491 m_colorCube
[ (r
*1024) + (g
*32) + b
] = index
;
499 GdkVisual
*wxApp::GetGdkVisual()
501 GdkVisual
*visual
= NULL
;
504 visual
= gdkx_visual_get( ((XVisualInfo
*) m_glVisualInfo
)->visualid
);
506 visual
= gdk_window_get_visual( wxGetRootWindow()->window
);
513 bool wxApp::Initialize(int& argc
, wxChar
**argv
)
518 // GTK 1.2 up to version 1.2.3 has broken threads
519 if ((gtk_major_version
== 1) &&
520 (gtk_minor_version
== 2) &&
521 (gtk_micro_version
< 4))
523 printf( "wxWidgets warning: GUI threading disabled due to outdated GTK version\n" );
527 if (!g_thread_supported())
530 #endif // wxUSE_THREADS
535 wxConvCurrent
= &wxConvLocal
;
538 // gtk_init() wants UTF-8, not wchar_t, so convert
540 char **argvGTK
= new char *[argc
+ 1];
541 for ( i
= 0; i
< argc
; i
++ )
543 argvGTK
[i
] = wxStrdupA(wxConvUTF8
.cWX2MB(argv
[i
]));
546 argvGTK
[argc
] = NULL
;
551 init_result
= true; // is there a _check() version of this?
552 gpe_application_init( &argcGTK
, &argvGTK
);
554 init_result
= gtk_init_check( &argcGTK
, &argvGTK
);
557 if ( argcGTK
!= argc
)
559 // we have to drop the parameters which were consumed by GTK+
560 for ( i
= 0; i
< argcGTK
; i
++ )
562 while ( strcmp(wxConvUTF8
.cWX2MB(argv
[i
]), argvGTK
[i
]) != 0 )
564 memmove(argv
+ i
, argv
+ i
+ 1, argc
- i
);
570 //else: gtk_init() didn't modify our parameters
573 for ( i
= 0; i
< argcGTK
; i
++ )
579 #else // !wxUSE_UNICODE
580 // gtk_init() shouldn't actually change argv itself (just its contents) so
581 // it's ok to pass pointer to it
582 init_result
= gtk_init_check( &argc
, &argv
);
583 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
586 wxLogError(wxT("Unable to initialize gtk, is DISPLAY set properly?"));
590 // we cannot enter threads before gtk_init is done
593 if ( !wxAppBase::Initialize(argc
, argv
) )
600 wxSetDetectableAutoRepeat( TRUE
);
603 wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
609 void wxApp::CleanUp()
613 wxAppBase::CleanUp();
616 void wxApp::OnAssertFailure(const wxChar
*file
,
622 // there is no need to do anything if asserts are disabled in this build
625 // block wx idle events while assert dialog is showing
628 wxAppBase::OnAssertFailure(file
, line
, func
, cond
, msg
);
630 m_isInAssert
= false;
631 #else // !wxDEBUG_LEVEL
637 #endif // wxDEBUG_LEVEL/!wxDEBUG_LEVEL
640 void wxApp::RemoveIdleTag()
643 wxMutexLocker
lock(gs_idleTagsMutex
);
647 gtk_idle_remove( wxTheApp
->m_idleTag
);
648 wxTheApp
->m_idleTag
= 0;