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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
*
* This file is part of OpenOffice.org.
*
* OpenOffice.org is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License version 3
* only, as published by the Free Software Foundation.
*
* OpenOffice.org 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 version 3 for more details
* (a copy is included in the LICENSE file that accompanied this code).
*
* You should have received a copy of the GNU Lesser General Public License
* version 3 along with OpenOffice.org. If not, see
* <http://www.openoffice.org/license.html>
* for a copy of the LGPLv3 License.
*
************************************************************************/
#ifndef INCLUDED_SLIDESHOW_HSLCOLOR_HXX
#define INCLUDED_SLIDESHOW_HSLCOLOR_HXX
#include <cppcanvas/color.hxx>
/* Definition of HSLColor class */
namespace slideshow
{
namespace internal
{
class RGBColor;
/** HSL color space class.
*/
class HSLColor
{
public:
HSLColor();
explicit HSLColor( ::cppcanvas::Color::IntSRGBA nRGBColor );
HSLColor( double nHue, double nSaturation, double nLuminance );
explicit HSLColor( const RGBColor& rColor );
/** Hue of the color.
@return hue, is in the range [0,360]
*/
double getHue() const;
/** Saturation of the color.
@return saturation, is in the range [0,1]
*/
double getSaturation() const;
/** Luminance of the color.
@return luminance, is in the range [0,1]
*/
double getLuminance() const;
/** Get the RGB red value.
*/
double getRed() const;
/** Get the RGB green value.
*/
double getGreen() const;
/** Get the RGB blue value.
*/
double getBlue() const;
/** Create an RGB color object.
*/
RGBColor getRGBColor() const;
struct HSLTriple
{
HSLTriple();
HSLTriple( double nHue, double nSaturation, double nLuminance );
double mnHue;
double mnSaturation;
double mnLuminance;
};
private:
// default copy/assignment are okay
// HSLColor(const HSLColor&);
// HSLColor& operator=( const HSLColor& );
HSLTriple maHSLTriple;
/// Pre-calculated value, needed for conversion back to RGB
double mnMagicValue;
};
HSLColor operator+( const HSLColor& rLHS, const HSLColor& rRHS );
HSLColor operator*( const HSLColor& rLHS, const HSLColor& rRHS );
HSLColor operator*( double nFactor, const HSLColor& rRHS );
/** HSL color linear interpolator.
@param t
As usual, t must be in the [0,1] range
@param bCCW
When true, hue interpolation happens counter-clockwise
*/
HSLColor interpolate( const HSLColor& rFrom, const HSLColor& rTo, double t, bool bCCW=true );
}
}
#endif /* INCLUDED_SLIDESHOW_HSLCOLOR_HXX */
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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