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diff --git a/vcl/osx/saltimer.cxx b/vcl/osx/saltimer.cxx
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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#include <sal/config.h>
+
+#include <rtl/math.hxx>
+#include <tools/time.hxx>
+
+#include <osx/saltimer.h>
+#include <osx/salnstimer.h>
+#include <osx/saldata.hxx>
+#include <osx/salframe.h>
+#include <osx/salinst.h>
+
+
+void ImplNSAppPostEvent( short nEventId, BOOL bAtStart, int nUserData )
+{
+ ReleasePoolHolder aPool;
+ NSEvent* pEvent = [NSEvent otherEventWithType: NSEventTypeApplicationDefined
+ location: NSZeroPoint
+ modifierFlags: 0
+ timestamp: [[NSProcessInfo processInfo] systemUptime]
+ windowNumber: 0
+ context: nil
+ subtype: nEventId
+ data1: nUserData
+ data2: 0];
+ assert( pEvent );
+ if ( nil == pEvent )
+ return;
+ if ( NO == bAtStart )
+ {
+ // nextEventMatchingMask has to run in the main thread!
+ assert([NSThread isMainThread]);
+
+ // Posting an event to the end of an empty queue fails,
+ // so we peek the queue and post to the start, if empty.
+ // Some Qt bugs even indicate nextEvent without dequeue
+ // sometimes blocks, so we dequeue and re-add the event.
+ NSEvent* pPeekEvent = [NSApp nextEventMatchingMask: NSEventMaskAny
+ untilDate: nil
+ inMode: NSDefaultRunLoopMode
+ dequeue: YES];
+ if ( nil == pPeekEvent )
+ bAtStart = YES;
+ else
+ [NSApp postEvent: pPeekEvent atStart: YES];
+ }
+ [NSApp postEvent: pEvent atStart: bAtStart];
+}
+
+void AquaSalTimer::queueDispatchTimerEvent( bool bAtStart )
+{
+ Stop();
+ m_bDirectTimeout = true;
+ ImplNSAppPostEvent( AquaSalInstance::DispatchTimerEvent,
+ bAtStart, GetNextEventVersion() );
+}
+
+void AquaSalTimer::Start( sal_uInt64 nMS )
+{
+ SalData* pSalData = GetSalData();
+
+ if( !pSalData->mpInstance->IsMainThread() )
+ {
+ ImplNSAppPostEvent( AquaSalInstance::AppStartTimerEvent, YES, nMS );
+ return;
+ }
+
+ m_bDirectTimeout = (0 == nMS) && !ImplGetSVData()->mpWinData->mbIsLiveResize;
+ if ( m_bDirectTimeout )
+ Stop();
+ else
+ {
+ NSTimeInterval aTI = double(nMS) / 1000.0;
+ if( m_pRunningTimer != nil )
+ {
+ if ([m_pRunningTimer isValid] && rtl::math::approxEqual(
+ [m_pRunningTimer timeInterval], aTI))
+ {
+ // set new fire date
+ [m_pRunningTimer setFireDate: [NSDate dateWithTimeIntervalSinceNow: aTI]];
+ }
+ else
+ Stop();
+ }
+ else
+ Stop();
+ if( m_pRunningTimer == nil )
+ {
+ m_pRunningTimer = [[NSTimer scheduledTimerWithTimeInterval: aTI
+ target: [[[TimerCallbackCaller alloc] init] autorelease]
+ selector: @selector(timerElapsed:)
+ userInfo: nil
+ repeats: NO
+ ] retain];
+ /* #i84055# add timer to tracking run loop mode,
+ so they also elapse while e.g. life resize
+ */
+ [[NSRunLoop currentRunLoop] addTimer: m_pRunningTimer forMode: NSEventTrackingRunLoopMode];
+ }
+ }
+}
+
+void AquaSalTimer::Stop()
+{
+ assert( GetSalData()->mpInstance->IsMainThread() );
+
+ if( m_pRunningTimer != nil )
+ {
+ [m_pRunningTimer invalidate];
+ [m_pRunningTimer release];
+ m_pRunningTimer = nil;
+ }
+ InvalidateEvent();
+}
+
+void AquaSalTimer::callTimerCallback()
+{
+ ImplSVData* pSVData = ImplGetSVData();
+ SolarMutexGuard aGuard;
+ m_bDirectTimeout = false;
+ if( pSVData->maSchedCtx.mpSalTimer )
+ pSVData->maSchedCtx.mpSalTimer->CallCallback();
+}
+
+void AquaSalTimer::handleTimerElapsed()
+{
+ if ( m_bDirectTimeout || ImplGetSVData()->mpWinData->mbIsLiveResize )
+ {
+ // Stop the timer, as it is just invalidated after the firing function
+ Stop();
+ callTimerCallback();
+ }
+ else
+ queueDispatchTimerEvent( true );
+}
+
+bool AquaSalTimer::handleDispatchTimerEvent( NSEvent *pEvent )
+{
+ bool bIsValidEvent = IsValidEventVersion( [pEvent data1] );
+ if ( bIsValidEvent )
+ callTimerCallback();
+ return bIsValidEvent;
+}
+
+void AquaSalTimer::handleStartTimerEvent( NSEvent* pEvent )
+{
+ ImplSVData* pSVData = ImplGetSVData();
+ if( pSVData->maSchedCtx.mpSalTimer )
+ {
+ NSTimeInterval posted = [pEvent timestamp] + NSTimeInterval([pEvent data1])/1000.0;
+ NSTimeInterval current = [NSDate timeIntervalSinceReferenceDate];
+ sal_uLong nTimeoutMS = 0;
+ if( (posted - current) > 0.0 )
+ nTimeoutMS = ceil( (posted - current) * 1000 );
+ Start( nTimeoutMS );
+ }
+}
+
+bool AquaSalTimer::IsTimerElapsed() const
+{
+ assert( !((ExistsValidEvent() || m_bDirectTimeout) && m_pRunningTimer) );
+ if ( ExistsValidEvent() || m_bDirectTimeout )
+ return true;
+ if ( !m_pRunningTimer )
+ return false;
+ NSDate* pDt = [m_pRunningTimer fireDate];
+ return pDt && ([pDt timeIntervalSinceNow] < 0);
+}
+
+AquaSalTimer::AquaSalTimer( )
+ : m_pRunningTimer( nil )
+{
+}
+
+AquaSalTimer::~AquaSalTimer()
+{
+ Stop();
+}
+
+void AquaSalTimer::handleWindowShouldClose()
+{
+ // for whatever reason events get filtered on close, presumably by
+ // timestamp so post a new timeout event, if there was one queued...
+ if ( ExistsValidEvent() && !m_pRunningTimer )
+ queueDispatchTimerEvent( false );
+}
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */