small optimization in wxConfigPathChanger: don't change the path if it is already...

[wxWidgets.git] / src / gtk / timer.cpp

diff --git a/src/gtk/timer.cpp b/src/gtk/timer.cpp
index 175c92aa12168af15f1b170d51d12b7eeef18c67..3b28f1d1c22251fc1d84e71ea59ba9556a9a4cf1 100644 (file)
--- a/src/gtk/timer.cpp
+++ b/src/gtk/timer.cpp
@@ -1,6 +1,6 @@
 /////////////////////////////////////////////////////////////////////////////
-// Name:        timer.cpp
-// Purpose:
+// Name:        gtk/timer.cpp
+// Purpose:     wxTimer implementation
 // Author:      Robert Roebling
 // Id:          $Id$
 // Copyright:   (c) 1998 Robert Roebling
@@ -8,45 +8,57 @@
 /////////////////////////////////////////////////////////////////////////////
 
 
-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)
 #pragma implementation "timer.h"
 #endif
 
+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+
+#if wxUSE_TIMER
+
 #include "wx/timer.h"
 
 #include "gtk/gtk.h"
 
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
 // wxTimer
-//-----------------------------------------------------------------------------
+// ----------------------------------------------------------------------------
 
-IMPLEMENT_ABSTRACT_CLASS(wxTimer,wxObject)
+IMPLEMENT_ABSTRACT_CLASS(wxTimer, wxEvtHandler)
 
-static gint timeout_callback( gpointer data )
+extern "C" gint timeout_callback( gpointer data )
 {
     wxTimer *timer = (wxTimer*)data;
 
-    /* when getting called from GDK's timer handler we
-       are no longer within GDK's grab on the GUI
-       thread so we must lock it here ourselves */
+    // Don't change the order of anything in this callback!
+    
+    if (timer->IsOneShot())
+    {
+        // This sets m_tag to -1
+        timer->Stop();
+    }
+    
+    // When getting called from GDK's timer handler we
+    // are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves.
     gdk_threads_enter();
 
     timer->Notify();
 
-    /* release lock again */
+    // Release lock again.
     gdk_threads_leave();
 
-    if ( timer->IsOneShot() )
+    if (timer->IsOneShot())
         return FALSE;
 
     return TRUE;
 }
 
-wxTimer::wxTimer()
+void wxTimer::Init()
 {
     m_tag = -1;
     m_milli = 1000;
-    m_oneShot = FALSE;
 }
 
 wxTimer::~wxTimer()
@@ -58,6 +70,9 @@ bool wxTimer::Start( int millisecs, bool oneShot )
 {
     (void)wxTimerBase::Start(millisecs, oneShot);
 
+    if (m_tag != -1)
+        gtk_timeout_remove( m_tag );
+
     m_tag = gtk_timeout_add( m_milli, timeout_callback, this );
 
     return TRUE;
@@ -72,3 +87,5 @@ void wxTimer::Stop()
     }
 }
 
+#endif // wxUSE_TIMER
+