Create an autorelease pool to catch objects created during several special situations...

[wxWidgets.git] / src / osx / carbon / evtloop.cpp

diff --git a/src/osx/carbon/evtloop.cpp b/src/osx/carbon/evtloop.cpp
index 48fcf2f11041418875ac15c0fb4d93448b33fa07..928e7f90a76c359f8564e3f5fbc987e5460d7cf3 100644 (file)
--- a/src/osx/carbon/evtloop.cpp
+++ b/src/osx/carbon/evtloop.cpp
@@ -1,5 +1,5 @@
 ///////////////////////////////////////////////////////////////////////////////
-// Name:        src/mac/carbon/evtloop.cpp
+// Name:        src/osx/carbon/evtloop.cpp
 // Purpose:     implementation of wxEventLoop for wxMac
 // Author:      Vadim Zeitlin
 // Modified by:
@@ -28,49 +28,20 @@
 
 #ifndef WX_PRECOMP
     #include "wx/app.h"
+    #include "wx/log.h"
 #endif // WX_PRECOMP
 
-#if wxOSX_USE_CARBON
-    #include <Carbon/Carbon.h>
-#else
-    #include <CoreFoundation/CoreFoundation.h>
-#endif
+#include "wx/osx/private.h"
+
 // ============================================================================
 // wxEventLoop implementation
 // ============================================================================
 
-// ----------------------------------------------------------------------------
-// high level functions for RunApplicationEventLoop() case
-// ----------------------------------------------------------------------------
-
-
-
-#if wxOSX_USE_RUN_APP_EVENT_LOOP
-
-int wxGUIEventLoop::Run()
+wxGUIEventLoop::wxGUIEventLoop()
 {
-    wxEventLoopActivator activate(this);
-
-    RunApplicationEventLoop();
-
-    return m_exitcode;
+    m_sleepTime = kEventDurationNoWait;
 }
 
-void wxGUIEventLoop::Exit(int rc)
-{
-    m_exitcode = rc;
-
-    QuitApplicationEventLoop();
-
-    OnExit();
-}
-
-#else // manual event loop
-
-// ----------------------------------------------------------------------------
-// functions only used by wxEventLoopManual-based implementation
-// ----------------------------------------------------------------------------
-
 void wxGUIEventLoop::WakeUp()
 {
     extern void wxMacWakeUp();
@@ -78,15 +49,25 @@ void wxGUIEventLoop::WakeUp()
     wxMacWakeUp();
 }
 
-#endif // high/low-level event loop
+CFRunLoopRef wxGUIEventLoop::CFGetCurrentRunLoop() const
+{
+    return CFRunLoopGetCurrent();
+}
+
+void wxGUIEventLoop::DispatchAndReleaseEvent(EventRef theEvent)
+{
+    if ( wxTheApp )
+        wxTheApp->MacSetCurrentEvent( theEvent, NULL );
 
-// ----------------------------------------------------------------------------
-// low level functions used in both cases
-// ----------------------------------------------------------------------------
+    OSStatus status = SendEventToEventTarget(theEvent, GetEventDispatcherTarget());
+    if (status == eventNotHandledErr && wxTheApp)
+        wxTheApp->MacHandleUnhandledEvent(theEvent);
+
+    ReleaseEvent( theEvent );
+}
 
 bool wxGUIEventLoop::Pending() const
 {
-#if wxOSX_USE_CARBON
     EventRef theEvent;
 
     return ReceiveNextEvent
@@ -97,9 +78,6 @@ bool wxGUIEventLoop::Pending() const
             false,      // don't remove the event from queue
             &theEvent
            ) == noErr;
-#else
-    return true; // TODO
-#endif
 }
 
 bool wxGUIEventLoop::Dispatch()
@@ -107,13 +85,103 @@ bool wxGUIEventLoop::Dispatch()
     if ( !wxTheApp )
         return false;
 
-#if wxOSX_USE_CARBON
-    // TODO: we probably should do the dispatching directly from here but for
-    //       now it's easier to forward to wxApp which has all the code to do
-    //       it
-    wxTheApp->MacDoOneEvent();
-#else
-    CFRunLoopRunInMode(kCFRunLoopDefaultMode, 0, 0);
+    wxMacAutoreleasePool autoreleasepool;
+
+    EventRef theEvent;
+
+    OSStatus status = ReceiveNextEvent(0, NULL, m_sleepTime, true, &theEvent) ;
+
+    switch (status)
+    {
+        case eventLoopTimedOutErr :
+            // process pending wx events before sending idle events
+            wxTheApp->ProcessPendingEvents();
+            if ( wxTheApp->ProcessIdle() )
+                m_sleepTime = kEventDurationNoWait ;
+            else
+            {
+                m_sleepTime = kEventDurationSecond;
+#if wxUSE_THREADS
+                wxMutexGuiLeave();
+                wxMilliSleep(20);
+                wxMutexGuiEnter();
 #endif
+            }
+            break;
+
+        case eventLoopQuitErr :
+            // according to QA1061 this may also occur
+            // when a WakeUp Process is executed
+            break;
+
+        default:
+            DispatchAndReleaseEvent(theEvent);
+            m_sleepTime = kEventDurationNoWait ;
+            break;
+    }
+
+    return true;
+}
+
+int wxGUIEventLoop::DispatchTimeout(unsigned long timeout)
+{
+    EventRef event;
+    OSStatus status = ReceiveNextEvent(0, NULL, timeout/1000, true, &event);
+    switch ( status )
+    {
+        default:
+            wxFAIL_MSG( "unexpected ReceiveNextEvent() error" );
+            // fall through
+
+        case eventLoopTimedOutErr:
+            return -1;
+
+        case eventLoopQuitErr:
+            return 0;
+
+        case noErr:
+            DispatchAndReleaseEvent(event);
+            return 1;
+    }
+}
+
+bool wxGUIEventLoop::YieldFor(long eventsToProcess)
+{
+#if wxUSE_THREADS
+    // Yielding from a non-gui thread needs to bail out, otherwise we end up
+    // possibly sending events in the thread too.
+    if ( !wxThread::IsMain() )
+    {
+        return true;
+    }
+#endif // wxUSE_THREADS
+
+    m_isInsideYield = true;
+    m_eventsToProcessInsideYield = eventsToProcess;
+
+#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 // wxUSE_LOG
+
+    // process all pending events:
+    while ( Pending() )
+        Dispatch();
+
+    // 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)
+    while ( ProcessIdle() ) {}
+
+    // if there are pending events, we must process them.
+    if (wxTheApp)
+        wxTheApp->ProcessPendingEvents();
+    
+#if wxUSE_LOG
+    wxLog::Resume();
+#endif // wxUSE_LOG
+    m_isInsideYield = false;
+
     return true;
 }