slideshow/source/engine/activities/continuouskeytimeactivitybase.cxx

   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
  21 // must be first
  22 #include <canvas/debug.hxx>
  23 #include <tools/diagnose_ex.h>
  24 #include <canvas/verbosetrace.hxx>
  25
  26 #include <continuouskeytimeactivitybase.hxx>
  27
  28 #include <boost/tuple/tuple.hpp>
  29 #include <algorithm>
  30 #include <iterator>
  31
  32
  33 namespace slideshow
  34 {
  35     namespace internal
  36     {
  37         ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase( const ActivityParameters& rParms ) :
  38             SimpleContinuousActivityBase( rParms ),
  39             maLerper( rParms.maDiscreteTimes )
  40         {
  41             ENSURE_OR_THROW( rParms.maDiscreteTimes.size() > 1,
  42                               "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector must have two entries or more" );
  43             ENSURE_OR_THROW( rParms.maDiscreteTimes.front() == 0.0,
  44                               "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector first entry must be zero" );
  45             ENSURE_OR_THROW( rParms.maDiscreteTimes.back() <= 1.0,
  46                               "ContinuousKeyTimeActivityBase::ContinuousKeyTimeActivityBase(): key times vector last entry must be less or equal 1" );
  47         }
  48
  49         void ContinuousKeyTimeActivityBase::simplePerform( double       nSimpleTime,
  50                                                            sal_uInt32   nRepeatCount ) const
  51         {
  52             // calc simple time from global time - sweep through the
  53             // array multiple times for repeated animations (according to
  54             // SMIL spec).
  55             double fAlpha( calcAcceleratedTime( nSimpleTime ) );
  56             std::ptrdiff_t nIndex;
  57
  58             boost::tuples::tie(nIndex,fAlpha) = maLerper.lerp(fAlpha);
  59
  60             perform(
  61                 nIndex,
  62                 fAlpha,
  63                 nRepeatCount );
  64         }
  65     }
  66 }
  67
  68 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */