/* -*- 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 .
*/
namespace slideshow::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;
/** 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 ::basegfx::B2DTuple getUnderlyingValue() const = 0;
};
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