Some minor clean-ups to the wxScrolledWindow code.

[wxWidgets.git] / src / gtk1 / app.cpp

diff --git a/src/gtk1/app.cpp b/src/gtk1/app.cpp
index 860d6d6c71fde7721580c66a5eac6d4980d2ab3e..14935b2780bc3155e927eb2dee26c5e540d67457 100644 (file)
--- a/src/gtk1/app.cpp
+++ b/src/gtk1/app.cpp
@@ -80,27 +80,37 @@ void wxExit()
 // wxYield
 //-----------------------------------------------------------------------------
 
+static bool gs_inYield = FALSE;
+
 bool wxYield()
 {
-    bool has_idle = (wxTheApp->m_idleTag != 0);
+#if wxUSE_THREADS
+    if ( !wxThread::IsMain() )
+    {
+        // can't call gtk_main_iteration() from other threads like this
+        return TRUE;
+    }
+#endif // wxUSE_THREADS
+
+#ifdef __WXDEBUG__    
+    if (gs_inYield)
+        wxFAIL_MSG( wxT("wxYield called recursively" ) );
+#endif
+    
+    gs_inYield = TRUE;
 
-    if (has_idle)
+    if (!g_isIdle)
     {
-        /* We need to temporarily remove idle callbacks or the loop will
-           never finish. */
+        // We need to remove idle callbacks or the loop will
+        // never finish.
         gtk_idle_remove( wxTheApp->m_idleTag );
         wxTheApp->m_idleTag = 0;
+        g_isIdle = TRUE;
     }
 
     while (gtk_events_pending())
         gtk_main_iteration();
 
-    if (has_idle)
-    {
-        /* re-add idle handler (very low priority) */
-        wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
-    }
-
     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();
@@ -113,9 +123,24 @@ bool wxYield()
     // let the logs be flashed again
     wxLog::Resume();
 
+    gs_inYield = FALSE;
+
     return TRUE;
 }
 
+//-----------------------------------------------------------------------------
+// wxYieldIfNeeded
+// Like wxYield, but fails silently if the yield is recursive.
+//-----------------------------------------------------------------------------
+
+bool wxYieldIfNeeded()
+{
+    if (gs_inYield)
+        return FALSE;
+        
+    return wxYield();    
+}
+
 //-----------------------------------------------------------------------------
 // wxWakeUpIdle
 //-----------------------------------------------------------------------------
@@ -176,9 +201,6 @@ gint wxapp_idle_callback( gpointer WXUNUSED(data) )
     // thread so we must lock it here ourselves
     gdk_threads_enter();
 
-    // Sent idle event to all who request them
-    while (wxTheApp->ProcessIdle()) { }
-
     /* Indicate that we are now in idle mode - even so deeply
        in idle mode that we don't get any idle events anymore.
        this is like wxMSW where an idle event is sent only
@@ -187,6 +209,9 @@ gint wxapp_idle_callback( gpointer WXUNUSED(data) )
     g_isIdle = TRUE;
     wxTheApp->m_idleTag = 0;
 
+    // Sent idle event to all who request them
+    while (wxTheApp->ProcessIdle()) { }
+
     // Release lock again
     gdk_threads_leave();
 
@@ -199,6 +224,8 @@ void wxapp_install_idle_handler()
 {
     wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
 
+    g_isIdle = FALSE;
+
     if (g_pendingTag == 0)
         g_pendingTag = gtk_idle_add_priority( 900, wxapp_pending_callback, (gpointer) NULL );
         
@@ -209,8 +236,6 @@ void wxapp_install_idle_handler()
        idle time). Very low priority. */
 
     wxTheApp->m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
-
-    g_isIdle = FALSE;
 }
 
 #if wxUSE_THREADS
@@ -289,7 +314,8 @@ wxApp::wxApp()
     m_topWindow = (wxWindow *) NULL;
     m_exitOnFrameDelete = TRUE;
 
-    m_idleTag = gtk_idle_add_priority( 1000, wxapp_idle_callback, (gpointer) NULL );
+    m_idleTag = 0;
+    wxapp_install_idle_handler();
 
 #if wxUSE_THREADS
     m_wakeUpTimerTag = 0;
@@ -623,11 +649,14 @@ int wxEntryStart( int argc, char *argv[] )
 
     gtk_set_locale();
 
+    // We should have the wxUSE_WCHAR_T test on the _outside_
+#if wxUSE_WCHAR_T
 #if defined(__WXGTK20__)
     // gtk+ 2.0 supports Unicode through UTF-8 strings
     wxConvCurrent = &wxConvUTF8;
-#elif wxUSE_WCHAR_T
+#else
     if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
+#endif
 #else
     if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
 #endif
@@ -647,7 +676,6 @@ int wxEntryStart( int argc, char *argv[] )
     return 0;
 }
 
-
 int wxEntryInitGui()
 {
     int retValue = 0;