X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/8907154c1a8a6882c6797d1f16393ddfb23e7f3a..39c0d6d6b6682b1847881d1e2662a4ccdec83ec8:/src/gtk1/evtloop.cpp

diff --git a/src/gtk1/evtloop.cpp b/src/gtk1/evtloop.cpp
index 7fbde67a58..fa0e6c7f6e 100644
--- a/src/gtk1/evtloop.cpp
+++ b/src/gtk1/evtloop.cpp
@@ -1,12 +1,11 @@
 ///////////////////////////////////////////////////////////////////////////////
-// 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
 ///////////////////////////////////////////////////////////////////////////////
 
 // ============================================================================
@@ -25,7 +24,13 @@
 #endif
 
 #include "wx/evtloop.h"
-#include "wx/app.h"
+#include "wx/private/eventloopsourcesmanager.h"
+#include "wx/apptrait.h"
+
+#ifndef WX_PRECOMP
+    #include "wx/app.h"
+    #include "wx/log.h"
+#endif // WX_PRECOMP
 
 #include <gtk/gtk.h>
 
@@ -49,47 +54,70 @@ private:
 };
 
 // ============================================================================
-// wxEventLoop implementation
+// wxGUIEventLoop implementation
 // ============================================================================
 
 // ----------------------------------------------------------------------------
-// wxEventLoop running and exiting
+// wxGUIEventLoop running and exiting
 // ----------------------------------------------------------------------------
 
-wxEventLoop *wxEventLoopBase::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()") );
 }
 
-int wxEventLoop::Run()
+int wxGUIEventLoop::DoRun()
 {
-    // event loops are not recursive, you need to create another loop!
-    wxCHECK_MSG( !IsRunning(), -1, _T("can't reenter a message loop") );
+    m_impl = new wxEventLoopImpl;
 
-    wxEventLoop *oldLoop = ms_activeLoop;
-    ms_activeLoop = this;
+    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.
+#if 0
+   // changed by JJ
+   // this code was intended to support nested event loops. However,
+   // exiting a dialog will result in a application hang (because
+   // gtk_main_quit is called when closing the dialog????)
+   // So for the moment this code is disabled and nested event loops
+   // probably fail for wxGTK1
+   while ( !m_shouldExit )
+    {
+#endif
+       gtk_main();
+#if 0
+    }
 
-    m_impl = new wxEventLoopImpl;
+    // 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();
+    }
+#endif
 
-    gtk_main();
+    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();
 }
 
@@ -97,7 +125,7 @@ void wxEventLoop::Exit(int rc)
 // wxEventLoop message processing dispatching
 // ----------------------------------------------------------------------------
 
-bool wxEventLoop::Pending() const
+bool wxGUIEventLoop::Pending() const
 {
     if (wxTheApp)
     {
@@ -109,12 +137,81 @@ bool wxEventLoop::Pending() const
     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;
+}
+
+class wxGUIEventLoopSourcesManager : public wxEventLoopSourcesManagerBase
+{
+ public:
+    wxEventLoopSource *
+    AddSourceForFD(int WXUNUSED(fd),
+                   wxEventLoopSourceHandler* WXUNUSED(handler),
+                   int WXUNUSED(flags))
+    {
+        wxFAIL_MSG("Monitoring FDs in the main loop is not implemented in wxGTK1");
+
+        return NULL;
+    }
+};
+
+wxEventLoopSourcesManagerBase* wxGUIAppTraits::GetEventLoopSourcesManager()
+{
+    static wxGUIEventLoopSourcesManager s_eventLoopSourcesManager;
+
+    return &s_eventLoopSourcesManager;
+}