79 lines
3 KiB
C++
79 lines
3 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_ENGINE_ACTIVITIES_SIMPLECONTINUOUSACTIVITYBASE_HXX
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#define INCLUDED_SLIDESHOW_SOURCE_ENGINE_ACTIVITIES_SIMPLECONTINUOUSACTIVITYBASE_HXX
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#include "activitybase.hxx"
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#include <canvas/elapsedtime.hxx>
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namespace slideshow::internal
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{
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/** Simple, continuous animation.
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This class implements a simple, continuous animation
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without considering repeats or acceleration on the
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perform call. Only useful as a base class, you
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probably want to use ContinuousActivityBase.
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*/
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class SimpleContinuousActivityBase : public ActivityBase
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{
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public:
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explicit SimpleContinuousActivityBase( const ActivityParameters& rParms );
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virtual double calcTimeLag() const override;
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virtual bool perform() override;
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protected:
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/** Hook for derived classes
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This method will be called from perform().
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@param nSimpleTime
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Simple animation time, without repeat,
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acceleration or deceleration applied. This value
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is always in the [0,1] range, the repeat is
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accounted for with the nRepeatCount parameter.
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@param nRepeatCount
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Number of full repeats already performed
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*/
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virtual void simplePerform( double nSimpleTime, sal_uInt32 nRepeatCount ) const = 0;
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virtual void startAnimation() override;
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private:
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/// Time elapsed since activity started
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::canvas::tools::ElapsedTime maTimer;
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/// Simple duration of activity
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const double mnMinSimpleDuration;
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/// Minimal number of frames to show (see ActivityParameters)
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const sal_uInt32 mnMinNumberOfFrames;
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/// Actual number of frames shown until now.
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sal_uInt32 mnCurrPerformCalls;
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};
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}
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#endif // INCLUDED_SLIDESHOW_SOURCE_ENGINE_ACTIVITIES_SIMPLECONTINUOUSACTIVITYBASE_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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