X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/6a5557396189e093fd63cc9fab5acd3d84a77e8b..b6349b169bd17e208da0f7c447bea94cb08eefd1:/src/gtk/app.cpp

diff --git a/src/gtk/app.cpp b/src/gtk/app.cpp
index 5331f64a78..e60e5ea94c 100644
--- a/src/gtk/app.cpp
+++ b/src/gtk/app.cpp
@@ -135,7 +135,7 @@ bool wxApp::Yield(bool onlyIfNeeded)
 
     // We need to remove idle callbacks or the loop will
     // never finish.
-    wxTheApp->RemoveIdleTag();
+    RemoveIdleSource();
 
 #if wxUSE_LOG
     // disable log flushing from here because a call to wxYield() shouldn't
@@ -184,17 +184,39 @@ void wxApp::WakeUpIdle()
 extern "C"
 {
 
+// One-shot emission hook for "event" signal, to install idle handler.
+// This will be called when the "event" signal is issued on any GtkWidget object.
+static gboolean
+event_emission_hook(GSignalInvocationHint*, guint, const GValue*, gpointer)
+{
+    wxapp_install_idle_handler();
+    // remove hook
+    return false;
+}
+
+// add emission hook for "event" signal, to re-install idle handler when needed
+static inline void wxAddEmissionHook()
+{
+    GType widgetType = GTK_TYPE_WIDGET;
+    // if GtkWidget type is loaded
+    if (g_type_class_peek(widgetType) != NULL)
+    {
+        guint sig_id = g_signal_lookup("event", widgetType);
+        g_signal_add_emission_hook(sig_id, 0, event_emission_hook, NULL, NULL);
+    }
+}
+
 static gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 {
     if (!wxTheApp)
-        return TRUE;
+        return false;
 
 #ifdef __WXDEBUG__
     // don't generate the idle events while the assert modal dialog is shown,
     // this completely confuses the apps which don't expect to be reentered
     // from some safely-looking functions
     if ( wxTheApp->IsInAssert() )
-        return TRUE;
+        return false;
 #endif // __WXDEBUG__
 
     // When getting called from GDK's time-out handler
@@ -202,16 +224,6 @@ static gint wxapp_idle_callback( gpointer WXUNUSED(data) )
     // thread so we must lock it here ourselves.
     gdk_threads_enter();
 
-    // Indicate that we are now in idle mode and event handlers
-    // will have to reinstall the idle handler again.
-    {
-#if wxUSE_THREADS
-        wxMutexLocker lock(gs_idleTagsMutex);
-#endif
-        g_isIdle = true;
-        wxTheApp->m_idleTag = 0;
-    }
-
     bool moreIdles;
 
     // Send idle event to all who request them as long as
@@ -222,6 +234,19 @@ static gint wxapp_idle_callback( gpointer WXUNUSED(data) )
     // Release lock again
     gdk_threads_leave();
 
+    if (!moreIdles)
+    {
+#if wxUSE_THREADS
+        wxMutexLocker lock(gs_idleTagsMutex);
+#endif
+        // Indicate that we are now in idle mode and event handlers
+        // will have to reinstall the idle handler again.
+        g_isIdle = true;
+        wxTheApp->m_idleTag = 0;
+
+        wxAddEmissionHook();
+    }
+
     // Return FALSE if no more idle events are to be sent
     return moreIdles;
 }
@@ -319,6 +344,9 @@ static gint wxapp_poll_func( GPollFD *ufds, guint nfds, gint timeout )
 
 void wxapp_install_idle_handler()
 {
+    if (wxTheApp == NULL)
+        return;
+
 #if wxUSE_THREADS
     wxMutexLocker lock(gs_idleTagsMutex);
 #endif
@@ -583,15 +611,16 @@ void wxApp::OnAssertFailure(const wxChar *file,
 
 #endif // __WXDEBUG__
 
-void wxApp::RemoveIdleTag()
+void wxApp::RemoveIdleSource()
 {
 #if wxUSE_THREADS
     wxMutexLocker lock(gs_idleTagsMutex);
 #endif
-    if (!g_isIdle)
+    if (m_idleTag != 0)
     {
-        g_source_remove( wxTheApp->m_idleTag );
-        wxTheApp->m_idleTag = 0;
+        g_source_remove(m_idleTag);
+        m_idleTag = 0;
         g_isIdle = true;
+        wxAddEmissionHook();
     }
 }