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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
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* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
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* 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).
*
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* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
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************************************************************************/
#ifndef SD_SLIDESORTER_CONTROLLER_ANIMATION_FUNCTION_HXX
#define SD_SLIDESORTER_CONTROLLER_ANIMATION_FUNCTION_HXX
#include "model/SlsSharedPageDescriptor.hxx"
#include <basegfx/point/b2dpoint.hxx>
#include <boost/noncopyable.hpp>
#include <boost/function.hpp>
#include <tools/gen.hxx>
#include <vector>
namespace sd { namespace slidesorter { namespace view {
class SlideSorterView;
} } }
namespace sd { namespace slidesorter { namespace controller {
/** A collection of functions that are usefull when creating animations.
They are collected here until a better place is found.
*/
class AnimationFunction
: private ::boost::noncopyable
{
public:
/** Acceleration function that maps [0,1] to [0,1] linearly, ie it
returns the given time value unaltered.
*/
static double Linear (const double nTime);
/** Blend two points together according to the given weight.
*/
static double Blend (const double nStartValue, const double nEndValue, const double nWeight);
/** Apply a gradual change the alpha value from the old value to a
new value (set prior to this call.)
*/
static void ApplyButtonAlphaChange(
const model::SharedPageDescriptor& rpDescriptor,
view::SlideSorterView& rView,
const double nButtonAlpha,
const double nButtonBarAlpha);
};
class AnimationBezierFunction
{
public:
/** Create a cubic bezier curve whose start and end points are given
implicitly as P0=(0,0) and P3=(1,1). The second control point is
implicitly given as P2=(1-nY1,1-nX1).
*/
AnimationBezierFunction (
const double nX1,
const double nY1);
::basegfx::B2DPoint operator() (const double nT);
private:
const double mnX1;
const double mnY1;
const double mnX2;
const double mnY2;
double EvaluateComponent (
const double nT,
const double nV1,
const double nV2);
};
/** Turn a parametric function into one whose y-Values depend on its
x-Values. Note a lot of interpolation takes place. The resulting
accuracy should be good enough for the purpose of acceleration
function for animations.
*/
class AnimationParametricFunction
{
public:
typedef ::boost::function<basegfx::B2DPoint(double)> ParametricFunction;
AnimationParametricFunction (const ParametricFunction& rFunction);
double operator() (const double nX);
private:
/** y-Values of the parametric function given to the constructor
evaluated (and interpolated) for evenly spaced x-Values.
*/
::std::vector<double> maY;
};
} } } // end of namespace ::sd::slidesorter::controller
#endif
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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