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Diffstat (limited to 'slideshow/source/inc/hslcolor.hxx')
-rw-r--r-- | slideshow/source/inc/hslcolor.hxx | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/slideshow/source/inc/hslcolor.hxx b/slideshow/source/inc/hslcolor.hxx new file mode 100644 index 000000000000..5858212c3cbe --- /dev/null +++ b/slideshow/source/inc/hslcolor.hxx @@ -0,0 +1,110 @@ +/* -*- 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; + + 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: */ |