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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*************************************************************************
*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* Copyright 2000, 2010 Oracle and/or its affiliates.
*
* OpenOffice.org - a multi-platform office productivity suite
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_SLIDESHOW_PAIRANIMATION_HXX
#define INCLUDED_SLIDESHOW_PAIRANIMATION_HXX
#include "animation.hxx"
#include <basegfx/tuple/b2dtuple.hxx>
/* Definition of PairAnimation interface */
namespace slideshow
{
namespace internal
{
/** Interface defining a pair of numbers animation.
This interface is a specialization of the Animation
interface, and is used to animate attributes representable
by a pair of floating point values (e.g. a position or a
size).
*/
class PairAnimation : public Animation
{
public:
typedef ::basegfx::B2DTuple ValueType;
/** Set the animation to the given value
@param rValue
Current animation value.
*/
virtual bool operator()( const ValueType& rValue ) = 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 ::boost::shared_ptr< PairAnimation > PairAnimationSharedPtr;
}
}
#endif /* INCLUDED_SLIDESHOW_PAIRANIMATION_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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