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/*************************************************************************
*
* OpenOffice.org - a multi-platform office productivity suite
*
* $RCSfile: boolanimation.hxx,v $
*
* $Revision: 1.3 $
*
* last change: $Author: rt $ $Date: 2005-09-07 21:08:06 $
*
* The Contents of this file are made available subject to
* the terms of GNU Lesser General Public License Version 2.1.
*
*
* GNU Lesser General Public License Version 2.1
* =============================================
* Copyright 2005 by Sun Microsystems, Inc.
* 901 San Antonio Road, Palo Alto, CA 94303, USA
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License version 2.1, as published by the Free Software Foundation.
*
* This library 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 for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston,
* MA 02111-1307 USA
*
************************************************************************/
#ifndef _SLIDESHOW_BOOLANIMATION_HXX
#define _SLIDESHOW_BOOLANIMATION_HXX
#include <animation.hxx>
/* Definition of BoolAnimation interface */
namespace presentation
{
namespace internal
{
/** Interface defining a bool animation.
This interface is a specialization of the Animation
interface, and is used to animate attributes that have
only two discrete values (on and off, or true and false,
for example).
*/
class BoolAnimation : public Animation
{
public:
typedef bool ValueType;
/** Set the animation to the given value
@param bValue
Current animation value.
*/
virtual bool operator()( ValueType bValue ) = 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< BoolAnimation > BoolAnimationSharedPtr;
}
}
#endif /* _SLIDESHOW_BOOLANIMATION_HXX */
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