1 /////////////////////////////////////////////////////////////////////////////
4 // Author: Robert Roebling
6 // Copyright: (c) 1998 Robert Roebling, Julian Smart
7 // Licence: wxWindows licence
8 /////////////////////////////////////////////////////////////////////////////
11 // vms_jackets.h should for proper working be included before anything else
12 # include <vms_jackets.h>
13 #undef ConnectionNumber
16 // For compilers that support precompilation, includes "wx.h".
17 #include "wx/wxprec.h"
20 #include "wx/gdicmn.h"
24 #include "wx/memory.h"
26 #include "wx/settings.h"
27 #include "wx/dialog.h"
28 #include "wx/msgdlg.h"
30 #include "wx/filename.h"
31 #include "wx/module.h"
33 #include "wx/thread.h"
39 #ifdef __WXUNIVERSAL__
40 #include "wx/univ/theme.h"
41 #include "wx/univ/renderer.h"
45 #include "wx/thread.h"
54 // bug in the OpenBSD headers: at least in 3.1 there is no extern "C"
55 // in neither poll.h nor sys/poll.h which results in link errors later
68 // we implement poll() ourselves using select() which is supposed exist in
70 #include <sys/types.h>
73 #endif // HAVE_POLL/!HAVE_POLL
75 #include "wx/unix/private.h"
76 #include "wx/gtk/win_gtk.h"
80 //-----------------------------------------------------------------------------
82 //-----------------------------------------------------------------------------
84 bool g_mainThreadLocked
= FALSE
;
85 gint g_pendingTag
= 0;
87 static GtkWidget
*gs_RootWindow
= (GtkWidget
*) NULL
;
89 //-----------------------------------------------------------------------------
91 //-----------------------------------------------------------------------------
95 void wxapp_install_idle_handler();
98 static wxMutex gs_idleTagsMutex
;
101 //-----------------------------------------------------------------------------
103 //-----------------------------------------------------------------------------
105 // not static because used by textctrl.cpp
108 bool wxIsInsideYield
= FALSE
;
110 bool wxApp
::Yield(bool onlyIfNeeded
)
112 if ( wxIsInsideYield
)
116 wxFAIL_MSG( wxT("wxYield called recursively" ) );
123 if ( !wxThread
::IsMain() )
125 // can't call gtk_main_iteration() from other threads like this
128 #endif // wxUSE_THREADS
130 wxIsInsideYield
= TRUE
;
132 // We need to remove idle callbacks or the loop will
134 wxTheApp
->RemoveIdleTag();
137 // disable log flushing from here because a call to wxYield() shouldn't
138 // normally result in message boxes popping up &c
142 while (gtk_events_pending())
143 gtk_main_iteration();
145 // It's necessary to call ProcessIdle() to update the frames sizes which
146 // might have been changed (it also will update other things set from
147 // OnUpdateUI() which is a nice (and desired) side effect). But we
148 // call ProcessIdle() only once since this is not meant for longish
149 // background jobs (controlled by wxIdleEvent::RequestMore() and the
150 // return value of Processidle().
154 // let the logs be flashed again
158 wxIsInsideYield
= FALSE
;
163 //-----------------------------------------------------------------------------
165 //-----------------------------------------------------------------------------
167 // RR/KH: No wxMutexGui calls are needed here according to the GTK faq,
168 // http://www.gtk.org/faq/#AEN500 - this caused problems for wxPostEvent.
170 void wxApp
::WakeUpIdle()
172 wxapp_install_idle_handler();
175 //-----------------------------------------------------------------------------
177 //-----------------------------------------------------------------------------
179 // the callback functions must be extern "C" to comply with GTK+ declarations
183 static gint
wxapp_pending_callback( gpointer
WXUNUSED(data
) )
185 if (!wxTheApp
) return TRUE
;
187 // When getting called from GDK's time-out handler
188 // we are no longer within GDK's grab on the GUI
189 // thread so we must lock it here ourselves.
192 // Sent idle event to all who request them.
193 wxTheApp
->ProcessPendingEvents();
197 wxMutexLocker
lock(gs_idleTagsMutex
);
202 // Flush the logged messages if any.
204 wxLog
::FlushActive();
207 // Release lock again
210 // Return FALSE to indicate that no more idle events are
211 // to be sent (single shot instead of continuous stream)
215 static gint
wxapp_idle_callback( gpointer
WXUNUSED(data
) )
221 // don't generate the idle events while the assert modal dialog is shown,
222 // this completely confuses the apps which don't expect to be reentered
223 // from some safely-looking functions
224 if ( wxTheApp
->IsInAssert() )
226 // But repaint the assertion message if necessary
227 if (wxTopLevelWindows
.GetCount() > 0)
229 wxWindow
* win
= (wxWindow
*) wxTopLevelWindows
.GetLast()->GetData();
230 if (win
->IsKindOf(CLASSINFO(wxMessageDialog
)))
231 win
->OnInternalIdle();
235 #endif // __WXDEBUG__
237 // When getting called from GDK's time-out handler
238 // we are no longer within GDK's grab on the GUI
239 // thread so we must lock it here ourselves.
242 // Indicate that we are now in idle mode and event handlers
243 // will have to reinstall the idle handler again.
246 wxMutexLocker
lock(gs_idleTagsMutex
);
249 wxTheApp
->m_idleTag
= 0;
252 bool moreIdles
= false;
254 // Send idle event to all who request them as long as
255 // no events have popped up in the event queue.
256 while (moreIdles
= wxTheApp
->ProcessIdle() && (gtk_events_pending() == 0))
259 // Release lock again
262 // Return FALSE if no more idle events are to be sent
270 #define wxPollFd pollfd
273 typedef GPollFD wxPollFd
;
275 int wxPoll(wxPollFd
*ufds
, unsigned int nfds
, int timeout
)
277 // convert timeout from ms to struct timeval (s/us)
279 tv_timeout
.tv_sec
= timeout
/1000;
280 tv_timeout
.tv_usec
= (timeout
%1000)*1000;
282 // remember the highest fd used here
285 // and fill the sets for select()
290 wxFD_ZERO(&writefds
);
291 wxFD_ZERO(&exceptfds
);
294 for ( i
= 0; i
< nfds
; i
++ )
296 wxASSERT_MSG( ufds
[i
].fd
< wxFD_SETSIZE
, _T("fd out of range") );
298 if ( ufds
[i
].events
& G_IO_IN
)
299 wxFD_SET(ufds
[i
].fd
, &readfds
);
301 if ( ufds
[i
].events
& G_IO_PRI
)
302 wxFD_SET(ufds
[i
].fd
, &exceptfds
);
304 if ( ufds
[i
].events
& G_IO_OUT
)
305 wxFD_SET(ufds
[i
].fd
, &writefds
);
307 if ( ufds
[i
].fd
> fdMax
)
312 int res
= select(fdMax
, &readfds
, &writefds
, &exceptfds
, &tv_timeout
);
314 // translate the results back
315 for ( i
= 0; i
< nfds
; i
++ )
319 if ( wxFD_ISSET(ufds
[i
].fd
, &readfds
) )
320 ufds
[i
].revents
|= G_IO_IN
;
322 if ( wxFD_ISSET(ufds
[i
].fd
, &exceptfds
) )
323 ufds
[i
].revents
|= G_IO_PRI
;
325 if ( wxFD_ISSET(ufds
[i
].fd
, &writefds
) )
326 ufds
[i
].revents
|= G_IO_OUT
;
332 #endif // HAVE_POLL/!HAVE_POLL
334 static gint
wxapp_poll_func( GPollFD
*ufds
, guint nfds
, gint timeout
)
339 g_mainThreadLocked
= TRUE
;
341 // we rely on the fact that glib GPollFD struct is really just pollfd but
342 // I wonder how wise is this in the long term (VZ)
343 gint res
= wxPoll( (wxPollFd
*) ufds
, nfds
, timeout
);
346 g_mainThreadLocked
= FALSE
;
353 #endif // wxUSE_THREADS
357 void wxapp_install_idle_handler()
360 wxMutexLocker
lock(gs_idleTagsMutex
);
363 // Don't install the handler if it's already installed. This test *MUST*
364 // be done when gs_idleTagsMutex is locked!
368 // GD: this assert is raised when using the thread sample (which works)
369 // so the test is probably not so easy. Can widget callbacks be
370 // triggered from child threads and, if so, for which widgets?
371 // wxASSERT_MSG( wxThread::IsMain() || gs_WakeUpIdle, wxT("attempt to install idle handler from widget callback in child thread (should be exclusively from wxWakeUpIdle)") );
373 wxASSERT_MSG( wxTheApp
->m_idleTag
== 0, wxT("attempt to install idle handler twice") );
377 if (g_pendingTag
== 0)
378 g_pendingTag
= g_idle_add_full( 900, wxapp_pending_callback
, NULL
, NULL
);
380 // This routine gets called by all event handlers
381 // indicating that the idle is over. It may also
382 // get called from other thread for sending events
383 // to the main thread (and processing these in
384 // idle time). Very low priority.
385 wxTheApp
->m_idleTag
= g_idle_add_full( 1000, wxapp_idle_callback
, NULL
, NULL
);
388 //-----------------------------------------------------------------------------
389 // Access to the root window global
390 //-----------------------------------------------------------------------------
392 GtkWidget
* wxGetRootWindow()
394 if (gs_RootWindow
== NULL
)
396 gs_RootWindow
= gtk_window_new( GTK_WINDOW_TOPLEVEL
);
397 gtk_widget_realize( gs_RootWindow
);
399 return gs_RootWindow
;
402 //-----------------------------------------------------------------------------
404 //-----------------------------------------------------------------------------
406 IMPLEMENT_DYNAMIC_CLASS(wxApp
,wxEvtHandler
)
408 BEGIN_EVENT_TABLE(wxApp
, wxEvtHandler
)
409 EVT_IDLE(wxAppBase
::OnIdle
)
415 m_isInAssert
= FALSE
;
416 #endif // __WXDEBUG__
420 wxapp_install_idle_handler();
423 g_main_context_set_poll_func( NULL
, wxapp_poll_func
);
426 m_colorCube
= (unsigned char*) NULL
;
428 // this is NULL for a "regular" wxApp, but is set (and freed) by a wxGLApp
429 m_glVisualInfo
= (void *) NULL
;
430 m_glFBCInfo
= (void *) NULL
;
436 g_source_remove( m_idleTag
);
442 bool wxApp
::OnInitGui()
444 if ( !wxAppBase
::OnInitGui() )
447 GdkVisual
*visual
= gdk_visual_get_system();
449 // if this is a wxGLApp (derived from wxApp), and we've already
450 // chosen a specific visual, then derive the GdkVisual from that
451 if (m_glVisualInfo
!= NULL
)
453 // seems gtk_widget_set_default_visual no longer exists?
454 GdkVisual
* vis
= gtk_widget_get_default_visual();
456 GdkColormap
*colormap
= gdk_colormap_new( vis
, FALSE
);
457 gtk_widget_set_default_colormap( colormap
);
462 // On some machines, the default visual is just 256 colours, so
463 // we make sure we get the best. This can sometimes be wasteful.
466 if ((gdk_visual_get_best() != gdk_visual_get_system()) && (m_useBestVisual
))
468 /* seems gtk_widget_set_default_visual no longer exists? */
469 GdkVisual
* vis
= gtk_widget_get_default_visual();
471 GdkColormap
*colormap
= gdk_colormap_new( vis
, FALSE
);
472 gtk_widget_set_default_colormap( colormap
);
477 // Nothing to do for 15, 16, 24, 32 bit displays
478 if (visual
->depth
> 8) return TRUE
;
480 // initialize color cube for 8-bit color reduction dithering
482 GdkColormap
*cmap
= gtk_widget_get_default_colormap();
484 m_colorCube
= (unsigned char*)malloc(32 * 32 * 32);
486 for (int r
= 0; r
< 32; r
++)
488 for (int g
= 0; g
< 32; g
++)
490 for (int b
= 0; b
< 32; b
++)
492 int rr
= (r
<< 3) | (r
>> 2);
493 int gg
= (g
<< 3) | (g
>> 2);
494 int bb
= (b
<< 3) | (b
>> 2);
498 GdkColor
*colors
= cmap
->colors
;
503 for (int i
= 0; i
< cmap
->size
; i
++)
505 int rdiff
= ((rr
<< 8) - colors
[i
].red
);
506 int gdiff
= ((gg
<< 8) - colors
[i
].green
);
507 int bdiff
= ((bb
<< 8) - colors
[i
].blue
);
508 int sum
= ABS (rdiff
) + ABS (gdiff
) + ABS (bdiff
);
511 index
= i
; max
= sum
;
517 // assume 8-bit true or static colors. this really exists
518 GdkVisual
* vis
= gdk_colormap_get_visual( cmap
);
519 index
= (r
>> (5 - vis
->red_prec
)) << vis
->red_shift
;
520 index
|= (g
>> (5 - vis
->green_prec
)) << vis
->green_shift
;
521 index
|= (b
>> (5 - vis
->blue_prec
)) << vis
->blue_shift
;
523 m_colorCube
[ (r
*1024) + (g
*32) + b
] = index
;
531 GdkVisual
*wxApp
::GetGdkVisual()
533 GdkVisual
*visual
= NULL
;
536 visual
= gdkx_visual_get( ((XVisualInfo
*) m_glVisualInfo
)->visualid
);
538 visual
= gdk_window_get_visual( wxGetRootWindow()->window
);
545 bool wxApp
::Initialize(int& argc
, wxChar
**argv
)
550 // GTK 1.2 up to version 1.2.3 has broken threads
551 if ((gtk_major_version
== 1) &&
552 (gtk_minor_version
== 2) &&
553 (gtk_micro_version
< 4))
555 printf( "wxWidgets warning: GUI threading disabled due to outdated GTK version\n" );
559 if (!g_thread_supported())
562 #endif // wxUSE_THREADS
566 // We should have the wxUSE_WCHAR_T test on the _outside_
568 // gtk+ 2.0 supports Unicode through UTF-8 strings
569 wxConvCurrent
= &wxConvUTF8
;
570 #else // !wxUSE_WCHAR_T
572 wxConvCurrent
= (wxMBConv
*) NULL
;
573 #endif // wxUSE_WCHAR_T/!wxUSE_WCHAR_T
575 // decide which conversion to use for the file names
577 // (1) this variable exists for the sole purpose of specifying the encoding
578 // of the filenames for GTK+ programs, so use it if it is set
579 wxString
encName(wxGetenv(_T("G_FILENAME_ENCODING")));
580 encName
= encName
.BeforeFirst(_T(','));
581 if (encName
== _T("@locale"))
587 // (2) if a non default locale is set, assume that the user wants his
588 // filenames in this locale too
589 encName
= wxLocale
::GetSystemEncodingName().Upper();
590 // (3) finally use UTF-8 by default
591 if (encName
.empty() || encName
== _T("US-ASCII"))
592 encName
= _T("UTF-8");
593 wxSetEnv(_T("G_FILENAME_ENCODING"), encName
);
597 encName
= _T("UTF-8");
599 static wxConvBrokenFileNames
fileconv(encName
);
600 wxConvFileName
= &fileconv
;
603 // gtk_init() wants UTF-8, not wchar_t, so convert
605 char **argvGTK
= new char *[argc
+ 1];
606 for ( i
= 0; i
< argc
; i
++ )
608 argvGTK
[i
] = wxStrdupA(wxConvUTF8
.cWX2MB(argv
[i
]));
611 argvGTK
[argc
] = NULL
;
616 init_result
= true; // is there a _check() version of this?
617 gpe_application_init( &argcGTK
, &argvGTK
);
619 init_result
= gtk_init_check( &argcGTK
, &argvGTK
);
622 if ( argcGTK
!= argc
)
624 // we have to drop the parameters which were consumed by GTK+
625 for ( i
= 0; i
< argcGTK
; i
++ )
627 while ( strcmp(wxConvUTF8
.cWX2MB(argv
[i
]), argvGTK
[i
]) != 0 )
629 memmove(argv
+ i
, argv
+ i
+ 1, argc
- i
);
635 //else: gtk_init() didn't modify our parameters
638 for ( i
= 0; i
< argcGTK
; i
++ )
644 #else // !wxUSE_UNICODE
645 // gtk_init() shouldn't actually change argv itself (just its contents) so
646 // it's ok to pass pointer to it
647 init_result
= gtk_init_check( &argc
, &argv
);
648 #endif // wxUSE_UNICODE/!wxUSE_UNICODE
651 wxLogError(wxT("Unable to initialize gtk, is DISPLAY set properly?"));
655 // we can not enter threads before gtk_init is done
658 if ( !wxAppBase
::Initialize(argc
, argv
) )
665 wxSetDetectableAutoRepeat( TRUE
);
668 wxFont
::SetDefaultEncoding(wxLocale
::GetSystemEncoding());
674 void wxApp
::CleanUp()
678 wxAppBase
::CleanUp();
683 void wxApp
::OnAssert(const wxChar
*file
, int line
, const wxChar
* cond
, const wxChar
*msg
)
687 wxAppBase
::OnAssert(file
, line
, cond
, msg
);
689 m_isInAssert
= FALSE
;
692 #endif // __WXDEBUG__
694 void wxApp
::RemoveIdleTag()
697 wxMutexLocker
lock(gs_idleTagsMutex
);
701 g_source_remove( wxTheApp
->m_idleTag
);
702 wxTheApp
->m_idleTag
= 0;