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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: */