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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 .
+ */
+
+
+#ifndef INCLUDED_SALHELPER_TIMER_HXX
+#define INCLUDED_SALHELPER_TIMER_HXX
+
+#include "salhelper/simplereferenceobject.hxx"
+#include "osl/time.h"
+#include "salhelper/salhelperdllapi.h"
+
+namespace salhelper
+{
+
+/** Helper class for easier manipulation with TimeValue.
+ *
+ * Times are seconds in UTC since 01.01.1970
+ */
+struct SAL_WARN_UNUSED TTimeValue : public TimeValue
+{
+ TTimeValue()
+ {
+ Seconds = 0;
+ Nanosec = 0;
+ }
+
+ TTimeValue( sal_uInt32 Secs, sal_uInt32 Nano )
+ {
+ Seconds = Secs;
+ Nanosec = Nano;
+
+ normalize();
+ }
+
+ TTimeValue(sal_uInt32 MilliSecs)
+ {
+ Seconds = MilliSecs / 1000;
+ Nanosec = (MilliSecs % 1000) * 1000000L;
+
+ normalize();
+ }
+
+ TTimeValue( const TimeValue& rTimeValue )
+ {
+ Seconds = rTimeValue.Seconds;
+ Nanosec = rTimeValue.Nanosec;
+
+ normalize();
+ }
+
+ void SAL_CALL normalize()
+ {
+ if ( Nanosec > 1000000000 )
+ {
+ Seconds += Nanosec / 1000000000;
+ Nanosec %= 1000000000;
+ }
+ }
+
+ void SAL_CALL addTime( const TTimeValue& Delta )
+ {
+ Seconds += Delta.Seconds;
+ Nanosec += Delta.Nanosec;
+
+ normalize();
+ }
+
+ bool SAL_CALL isEmpty() const
+ {
+ return ( ( Seconds == 0 ) && ( Nanosec == 0 ) );
+ }
+};
+
+inline bool operator<( const TTimeValue& rTimeA, const TTimeValue& rTimeB )
+{
+ if ( rTimeA.Seconds < rTimeB.Seconds )
+ return true;
+ else if ( rTimeA.Seconds > rTimeB.Seconds )
+ return false;
+ else
+ return ( rTimeA.Nanosec < rTimeB.Nanosec );
+}
+
+inline bool operator>( const TTimeValue& rTimeA, const TTimeValue& rTimeB )
+{
+ if ( rTimeA.Seconds > rTimeB.Seconds )
+ return true;
+ else if ( rTimeA.Seconds < rTimeB.Seconds )
+ return false;
+ else
+ return ( rTimeA.Nanosec > rTimeB.Nanosec );
+}
+
+inline bool operator==( const TTimeValue& rTimeA, const TTimeValue& rTimeB )
+{
+ return ( ( rTimeA.Seconds == rTimeB.Seconds ) &&
+ ( rTimeA.Nanosec == rTimeB.Nanosec ) );
+}
+
+class TimerManager;
+
+/** Interface for the Timer and handling the event
+*/
+class SALHELPER_DLLPUBLIC Timer : public salhelper::SimpleReferenceObject
+{
+public:
+
+ /** Constructor.
+ */
+ Timer();
+
+ /** Constructor.
+ */
+ Timer( const TTimeValue& Time );
+
+ /** Constructor.
+ */
+ Timer( const TTimeValue& Time, const TTimeValue& RepeatTime );
+
+ /** Start timer.
+ */
+ void SAL_CALL start();
+
+ /** Abort timer prematurely.
+ */
+ void SAL_CALL stop();
+
+ /** Returns sal_True if timer is running.
+ */
+ sal_Bool SAL_CALL isTicking() const;
+
+ /** Is the timer expired?
+ */
+ sal_Bool SAL_CALL isExpired() const;
+
+ /** Does pTimer expires before us?
+ */
+ sal_Bool SAL_CALL expiresBefore( const Timer* pTimer ) const;
+
+ /** Set the absolute time when the timer should fire.
+ */
+ void SAL_CALL setAbsoluteTime( const TTimeValue& Time );
+
+ /** Set the time to fire to 'now' + Remaining.
+ */
+ void SAL_CALL setRemainingTime( const TTimeValue& Remaining );
+
+ /** Set the time to fire to 'now' + Remaining with repeat interveal
+ * Repeat.
+ */
+ void SAL_CALL setRemainingTime( const TTimeValue& Remaining, const TTimeValue& Repeat );
+
+ /** Adds Time to the 'fire time'.
+ */
+ void SAL_CALL addTime( const TTimeValue& Time );
+
+ /** Returns the remaining time before timer expiration relative to now.
+ */
+ TTimeValue SAL_CALL getRemainingTime() const;
+
+protected:
+
+ /** Destructor.
+ */
+ virtual ~Timer() SAL_OVERRIDE;
+
+ /** What should be done when the 'timer fires'.
+ */
+ virtual void SAL_CALL onShot() = 0;
+
+protected:
+
+ /** holds (initial) expiration time of this timer.
+ */
+ TTimeValue m_aTimeOut;
+
+ /** holds the time of expiration of this timer.
+ */
+ TTimeValue m_aExpired;
+
+ /** holds the time interveal of successive expirations.
+ */
+ TTimeValue m_aRepeatDelta;
+
+ /** Pointer to the next timer (to fire).
+ */
+ Timer* m_pNext;
+
+private:
+
+ /** Copy constructor deleted.
+ */
+ Timer( const Timer& rTimer ) SAL_DELETED_FUNCTION;
+
+ /** Copy assignment operator deleted.
+ */
+ void SAL_CALL operator=( const Timer& rTimer ) SAL_DELETED_FUNCTION;
+
+ friend class TimerManager;
+};
+
+}
+
+#endif // INCLUDED_SALHELPER_TIMER_HXX
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */