/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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*
* 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
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#ifndef INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATABLESHAPE_HXX
#define INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATABLESHAPE_HXX
#include <memory>
#include "shape.hxx"
namespace slideshow::internal
{
/** Represents an animatable shape.
This interface adds animation handling methods to a
shape . It allows transparent switching between
sprite - based viewing and static painting , depending on
whether animations are currently running .
*/
class AnimatableShape : public Shape
{
public :
// Animation methods
/** Notify the Shape that an animation starts now
This method enters animation mode on all registered
views .
@ attention This method is supposed to be called only
from the LayerManager , since it might involve shifting
shapes between different layers ( and removing this
shape from the background layer in the first place )
*/
virtual void enterAnimationMode() = 0 ;
/** Notify the Shape that it is no longer animated
This methods requests the Shape to end animation mode
on all registered views , if called more or equal the
times enterAnimationMode ( ) was called . That is , the
Shape only leaves animation mode , if all requested
enterAnimationMode ( ) call sites have issued their
matching leaveAnimationMode ( ) .
@ attention This method is supposed to be called only
from the LayerManager , since it might involve shifting
shapes between different layers ( and adding this
shape to the background layer again )
*/
virtual void leaveAnimationMode() = 0 ;
};
typedef ::std::shared_ptr< AnimatableShape > AnimatableShapeSharedPtr;
}
#endif // INCLUDED_SLIDESHOW_SOURCE_INC_ANIMATABLESHAPE_HXX
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