///////////////////////////////////////////////////////////////////////////////
-// Name: gtk/evtloop.cpp
+// Name: src/gtk1/evtloop.cpp
// Purpose: implements wxEventLoop for GTK+
// Author: Vadim Zeitlin
// Modified by:
// Created: 10.07.01
-// RCS-ID: $Id$
// Copyright: (c) 2001 Vadim Zeitlin <zeitlin@dptmaths.ens-cachan.fr>
-// License: wxWindows licence
+// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
// ============================================================================
// headers
// ----------------------------------------------------------------------------
-#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
- #pragma implementation "evtloop.h"
-#endif
-
// For compilers that support precompilation, includes "wx.h".
#include "wx/wxprec.h"
#pragma hdrstop
#endif
-#ifndef WX_PRECOMP
-#endif //WX_PRECOMP
-
#include "wx/evtloop.h"
+#ifndef WX_PRECOMP
+ #include "wx/app.h"
+ #include "wx/log.h"
+#endif // WX_PRECOMP
+
#include <gtk/gtk.h>
// ----------------------------------------------------------------------------
};
// ============================================================================
-// wxEventLoop implementation
+// wxGUIEventLoop implementation
// ============================================================================
// ----------------------------------------------------------------------------
-// wxEventLoop running and exiting
+// wxGUIEventLoop running and exiting
// ----------------------------------------------------------------------------
-wxEventLoop *wxEventLoop::ms_activeLoop = NULL;
-
-wxEventLoop::~wxEventLoop()
+wxGUIEventLoop::~wxGUIEventLoop()
{
- wxASSERT_MSG( !m_impl, _T("should have been deleted in Run()") );
+ wxASSERT_MSG( !m_impl, wxT("should have been deleted in Run()") );
}
-bool wxEventLoop::IsRunning() const
+int wxGUIEventLoop::DoRun()
{
- return m_impl != NULL;
-}
-
-int wxEventLoop::Run()
-{
- // event loops are not recursive, you need to create another loop!
- wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
-
- wxEventLoop *oldLoop = ms_activeLoop;
- ms_activeLoop = this;
-
m_impl = new wxEventLoopImpl;
- gtk_main();
+ guint loopLevel = gtk_main_level();
+
+ // This is placed inside of a loop to take into account nested
+ // event loops. For example, inside this event loop, we may recieve
+ // Exit() for a different event loop (which we are currently inside of)
+ // That Exit() will cause this gtk_main() to exit so we need to re-enter it.
+ while ( !m_shouldExit )
+ {
+ gtk_main();
+ }
+
+ // Force the enclosing event loop to also exit to see if it is done
+ // in case that event loop ended inside of this one. If it is not time
+ // yet for that event loop to exit, it will be executed again due to
+ // the while() loop on m_shouldExit().
+ //
+ // This is unnecessary if we are the top level loop, i.e. loop of level 0.
+ if ( loopLevel )
+ {
+ gtk_main_quit();
+ }
+
+ OnExit();
int exitcode = m_impl->GetExitCode();
- delete m_impl;
- m_impl = NULL;
-
- ms_activeLoop = oldLoop;
+ wxDELETE(m_impl);
return exitcode;
}
-void wxEventLoop::Exit(int rc)
+void wxGUIEventLoop::ScheduleExit(int rc)
{
- wxCHECK_RET( IsRunning(), _T("can't call Exit() if not running") );
+ wxCHECK_RET( IsInsideRun(), wxT("can't call ScheduleExit() if not started") );
m_impl->SetExitCode(rc);
+ m_shouldExit = true;
+
gtk_main_quit();
}
// wxEventLoop message processing dispatching
// ----------------------------------------------------------------------------
-bool wxEventLoop::Pending() const
+bool wxGUIEventLoop::Pending() const
{
- return gtk_events_pending() > 0;
+ if (wxTheApp)
+ {
+ // We need to remove idle callbacks or gtk_events_pending will
+ // never return false.
+ wxTheApp->RemoveIdleTag();
+ }
+
+ return gtk_events_pending();
}
-bool wxEventLoop::Dispatch()
+bool wxGUIEventLoop::Dispatch()
{
- wxCHECK_MSG( IsRunning(), FALSE, _T("can't call Dispatch() if not running") );
+ wxCHECK_MSG( IsRunning(), false, wxT("can't call Dispatch() if not running") );
gtk_main_iteration();
- return TRUE;
+ return true;
}
+//-----------------------------------------------------------------------------
+// wxYield
+//-----------------------------------------------------------------------------
+
+bool wxGUIEventLoop::YieldFor(long eventsToProcess)
+{
+#if wxUSE_THREADS
+ if ( !wxThread::IsMain() )
+ {
+ // can't call gtk_main_iteration() from other threads like this
+ return true;
+ }
+#endif // wxUSE_THREADS
+
+ m_isInsideYield = true;
+ m_eventsToProcessInsideYield = eventsToProcess;
+
+ // We need to remove idle callbacks or the loop will
+ // never finish.
+ wxTheApp->RemoveIdleTag();
+
+#if wxUSE_LOG
+ // disable log flushing from here because a call to wxYield() shouldn't
+ // normally result in message boxes popping up &c
+ wxLog::Suspend();
+#endif
+
+ // TODO: implement event filtering using the eventsToProcess mask
+ while (gtk_events_pending())
+ gtk_main_iteration();
+
+ // It's necessary to call ProcessIdle() to update the frames sizes which
+ // might have been changed (it also will update other things set from
+ // OnUpdateUI() which is a nice (and desired) side effect). But we
+ // call ProcessIdle() only once since this is not meant for longish
+ // background jobs (controlled by wxIdleEvent::RequestMore() and the
+ // return value of Processidle().
+ ProcessIdle();
+
+#if wxUSE_LOG
+ // let the logs be flashed again
+ wxLog::Resume();
+#endif
+
+ m_isInsideYield = false;
+
+ return true;
+}
projects / wxWidgets.git / blobdiff