109 lines
3.3 KiB
C++
109 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*************************************************************************
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*
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* Copyright 2000, 2010 Oracle and/or its affiliates.
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*
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* OpenOffice.org - a multi-platform office productivity suite
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*
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* This file is part of OpenOffice.org.
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*
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* OpenOffice.org is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License version 3
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* only, as published by the Free Software Foundation.
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*
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* OpenOffice.org is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Lesser General Public License version 3 for more details
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* (a copy is included in the LICENSE file that accompanied this code).
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*
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* You should have received a copy of the GNU Lesser General Public License
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* version 3 along with OpenOffice.org. If not, see
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* <http://www.openoffice.org/license.html>
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* for a copy of the LGPLv3 License.
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*
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************************************************************************/
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#ifndef INCLUDED_SLIDESHOW_HSLCOLOR_HXX
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#define INCLUDED_SLIDESHOW_HSLCOLOR_HXX
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#include <cppcanvas/color.hxx>
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/* Definition of HSLColor class */
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namespace slideshow
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{
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namespace internal
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{
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class RGBColor;
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/** HSL color space class.
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*/
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class HSLColor
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{
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public:
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HSLColor();
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HSLColor( double nHue, double nSaturation, double nLuminance );
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explicit HSLColor( const RGBColor& rColor );
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/** Hue of the color.
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@return hue, is in the range [0,360]
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*/
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double getHue() const;
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/** Saturation of the color.
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@return saturation, is in the range [0,1]
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*/
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double getSaturation() const;
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/** Luminance of the color.
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@return luminance, is in the range [0,1]
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*/
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double getLuminance() const;
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struct HSLTriple
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{
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HSLTriple();
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HSLTriple( double nHue, double nSaturation, double nLuminance );
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double mnHue;
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double mnSaturation;
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double mnLuminance;
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};
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private:
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// default copy/assignment are okay
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// HSLColor(const HSLColor&);
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// HSLColor& operator=( const HSLColor& );
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HSLTriple maHSLTriple;
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/// Pre-calculated value, needed for conversion back to RGB
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double mnMagicValue;
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};
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HSLColor operator+( const HSLColor& rLHS, const HSLColor& rRHS );
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HSLColor operator*( const HSLColor& rLHS, const HSLColor& rRHS );
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HSLColor operator*( double nFactor, const HSLColor& rRHS );
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/** HSL color linear interpolator.
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@param t
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As usual, t must be in the [0,1] range
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@param bCCW
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When true, hue interpolation happens counter-clockwise
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*/
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HSLColor interpolate( const HSLColor& rFrom, const HSLColor& rTo, double t, bool bCCW=true );
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}
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}
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#endif /* INCLUDED_SLIDESHOW_HSLCOLOR_HXX */
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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