83 lines
2.8 KiB
C++
83 lines
2.8 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_WAKEUPEVENT_HXX
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#define INCLUDED_SLIDESHOW_SOURCE_INC_WAKEUPEVENT_HXX
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#include <canvas/elapsedtime.hxx>
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#include "event.hxx"
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#include "activitiesqueue.hxx"
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namespace slideshow::internal {
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/** Little helper class, used to set Activities active again
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after some sleep period.
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Clients can use this class to schedule wakeup events at
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the EventQueue, to avoid busy-waiting for the next
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discrete time instant.
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*/
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class WakeupEvent : public Event
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{
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public:
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WakeupEvent(
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std::shared_ptr< ::canvas::tools::ElapsedTime > const& pTimeBase,
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ActivitiesQueue & rActivityQueue );
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WakeupEvent(const WakeupEvent&) = delete;
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WakeupEvent& operator=(const WakeupEvent&) = delete;
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virtual void dispose() override;
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virtual bool fire() override;
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virtual bool isCharged() const override;
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virtual double getActivationTime( double nCurrentTime ) const override;
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/// Start the internal timer
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void start();
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/** Set the next timeout this object should generate.
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@param nextTime
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Absolute time, measured from the last start() call,
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when this event should wakeup the Activity again. If
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your time is relative, simply call start() just before
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every setNextTimeout() call.
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*/
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void setNextTimeout( double nextTime );
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/** Set activity to wakeup.
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The activity given here will be reinserted into the
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ActivitiesQueue, once the timeout is reached.
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*/
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void setActivity( const ActivitySharedPtr& rActivity );
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private:
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::canvas::tools::ElapsedTime maTimer;
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double mnNextTime;
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ActivitySharedPtr mpActivity;
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ActivitiesQueue& mrActivityQueue;
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};
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typedef ::std::shared_ptr< WakeupEvent > WakeupEventSharedPtr;
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} // namespace presentation::internal
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#endif // INCLUDED_SLIDESHOW_SOURCE_INC_WAKEUPEVENT_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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