81 lines
2.7 KiB
C++
81 lines
2.7 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef INCLUDED_SLIDESHOW_PAIRANIMATION_HXX
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#define INCLUDED_SLIDESHOW_PAIRANIMATION_HXX
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#include "animation.hxx"
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#include <basegfx/tuple/b2dtuple.hxx>
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/* Definition of PairAnimation interface */
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namespace slideshow
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{
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namespace internal
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{
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/** Interface defining a pair of numbers animation.
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This interface is a specialization of the Animation
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interface, and is used to animate attributes representable
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by a pair of floating point values (e.g. a position or a
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size).
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*/
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class PairAnimation : public Animation
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{
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public:
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typedef ::basegfx::B2DTuple ValueType;
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/** Set the animation to the given value
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@param rValue
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Current animation value.
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*/
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virtual bool operator()( const ValueType& rValue ) = 0;
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/** Request the underlying value for this animation.
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This is necessary for pure To or By animations, as the
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Activity cannot determine a sensible start value
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otherwise.
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@attention Note that you are only permitted to query
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for the underlying value, if the animation has actually
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been started (via start() call).
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*/
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virtual ValueType getUnderlyingValue() const = 0;
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};
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typedef ::boost::shared_ptr< PairAnimation > PairAnimationSharedPtr;
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}
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}
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#endif /* INCLUDED_SLIDESHOW_PAIRANIMATION_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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