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       1             : /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
       2             : /*
       3             :  * This file is part of the LibreOffice project.
       4             :  *
       5             :  * This Source Code Form is subject to the terms of the Mozilla Public
       6             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       7             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
       8             :  *
       9             :  * This file incorporates work covered by the following license notice:
      10             :  *
      11             :  *   Licensed to the Apache Software Foundation (ASF) under one or more
      12             :  *   contributor license agreements. See the NOTICE file distributed
      13             :  *   with this work for additional information regarding copyright
      14             :  *   ownership. The ASF licenses this file to you under the Apache
      15             :  *   License, Version 2.0 (the "License"); you may not use this file
      16             :  *   except in compliance with the License. You may obtain a copy of
      17             :  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
      18             :  */
      19             : 
      20             : #ifndef INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX
      21             : #define INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX
      22             : 
      23             : #include "activitybase.hxx"
      24             : #include <canvas/elapsedtime.hxx>
      25             : 
      26             : namespace slideshow
      27             : {
      28             :     namespace internal
      29             :     {
      30             :         /** Simple, continuous animation.
      31             : 
      32             :             This class implements a simple, continuous animation
      33             :             without considering repeats or acceleration on the
      34             :             perform call. Only useful as a base class, you
      35             :             probably want to use ContinuousActivityBase.
      36             :         */
      37           0 :         class SimpleContinuousActivityBase : public ActivityBase
      38             :         {
      39             :         public:
      40             :             SimpleContinuousActivityBase( const ActivityParameters& rParms );
      41             : 
      42             :             virtual double calcTimeLag() const;
      43             :             virtual bool perform();
      44             : 
      45             :         protected:
      46             :             /** Hook for derived classes
      47             : 
      48             :                 This method will be called from perform().
      49             : 
      50             :                 @param nSimpleTime
      51             :                 Simple animation time, without repeat,
      52             :                 acceleration or deceleration applied. This value
      53             :                 is always in the [0,1] range, the repeat is
      54             :                 accounted for with the nRepeatCount parameter.
      55             : 
      56             :                 @param nRepeatCount
      57             :                 Number of full repeats already performed
      58             :             */
      59             :             virtual void simplePerform( double nSimpleTime, sal_uInt32 nRepeatCount ) const = 0;
      60             : 
      61             :             virtual void startAnimation();
      62             : 
      63             :         private:
      64             :             /// Time elapsed since activity started
      65             :             ::canvas::tools::ElapsedTime    maTimer;
      66             : 
      67             :             /// Simple duration of activity
      68             :             const double                    mnMinSimpleDuration;
      69             : 
      70             :             /// Minimal number of frames to show (see ActivityParameters)
      71             :             const sal_uInt32                mnMinNumberOfFrames;
      72             : 
      73             :             /// Actual number of frames shown until now.
      74             :             sal_uInt32                      mnCurrPerformCalls;
      75             :         };
      76             :     }
      77             : }
      78             : 
      79             : #endif /* INCLUDED_SLIDESHOW_SIMPLECONTINUOUSACTIVITYBASE_HXX */
      80             : 
      81             : /* vim:set shiftwidth=4 softtabstop=4 expandtab: */