/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project .
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License , v . 2 . 0 . If a copy of the MPL was not distributed with this
* file , You can obtain one at http : //mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice :
*
* Licensed to the Apache Software Foundation ( ASF ) under one or more
* contributor license agreements . See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership . The ASF licenses this file to you under the Apache
* License , Version 2 . 0 ( the " License " ) ; you may not use this file
* except in compliance with the License . You may obtain a copy of
* the License at http : //www.apache.org/licenses/LICENSE-2.0 .
*/
#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_ENUMANIMATION_HXX
#define INCLUDED_SLIDESHOW_SOURCE_INC_ENUMANIMATION_HXX
#include "animation.hxx"
/* Definition of EnumAnimation interface */
namespace slideshow::internal
{
/** Interface defining an enum animation.
This interface is a specialization of the Animation
interface , and is used to animate attributes representable
by a set of constant values , such as UNO constants , or enums .
*/
class EnumAnimation : public Animation
{
public :
typedef sal_Int16 ValueType;
/** Set the animation to value k
@ param k
Current animation value ( must be in an
attribute - specific permissible range ) . Overflowing
values will be clipped to the permissible range
internally .
*/
virtual bool operator ()( ValueType k ) = 0 ;
/** Request the underlying value for this animation.
This is necessary for pure To or By animations , as the
Activity cannot determine a sensible start value
otherwise .
@ attention Note that you are only permitted to query
for the underlying value , if the animation has actually
been started ( via start ( ) call ) .
*/
virtual ValueType getUnderlyingValue() const = 0 ;
};
typedef ::std::shared_ptr< EnumAnimation > EnumAnimationSharedPtr;
}
#endif // INCLUDED_SLIDESHOW_SOURCE_INC_ENUMANIMATION_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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