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Diffstat (limited to 'slideshow/source/engine/color.cxx')
| -rw-r--r-- | slideshow/source/engine/color.cxx | 390 |
1 files changed, 0 insertions, 390 deletions
diff --git a/slideshow/source/engine/color.cxx b/slideshow/source/engine/color.cxx deleted file mode 100644 index 35f3b4ed5..000000000 --- a/slideshow/source/engine/color.cxx +++ /dev/null @@ -1,390 +0,0 @@ -/* -*- 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. - * - ************************************************************************/ - -// MARKER(update_precomp.py): autogen include statement, do not remove -#include "precompiled_slideshow.hxx" - -#include <hslcolor.hxx> -#include <rgbcolor.hxx> - -#include <basegfx/numeric/ftools.hxx> - -#include <cmath> // for fmod -#include <algorithm> - - -namespace slideshow -{ - namespace internal - { - namespace - { - // helper functions - // ================ - - double getMagic( double nLuminance, double nSaturation ) - { - if( nLuminance <= 0.5 ) - return nLuminance*(1.0 + nSaturation); - else - return nLuminance + nSaturation - nLuminance*nSaturation; - } - - HSLColor::HSLTriple rgb2hsl( double nRed, double nGreen, double nBlue ) - { - // r,g,b in [0,1], h in [0,360] and s,l in [0,1] - HSLColor::HSLTriple aRes; - - const double nMax( ::std::max(nRed,::std::max(nGreen, nBlue)) ); - const double nMin( ::std::min(nRed,::std::min(nGreen, nBlue)) ); - - const double nDelta( nMax - nMin ); - - aRes.mnLuminance = (nMax + nMin) / 2.0; - - if( ::basegfx::fTools::equalZero( nDelta ) ) - { - aRes.mnSaturation = 0.0; - - // hue undefined (achromatic case) - aRes.mnHue = 0.0; - } - else - { - aRes.mnSaturation = aRes.mnLuminance > 0.5 ? - nDelta/(2.0-nMax-nMin) : - nDelta/(nMax + nMin); - - if( nRed == nMax ) - aRes.mnHue = (nGreen - nBlue)/nDelta; - else if( nGreen == nMax ) - aRes.mnHue = 2.0 + (nBlue - nRed)/nDelta; - else if( nBlue == nMax ) - aRes.mnHue = 4.0 + (nRed - nGreen)/nDelta; - - aRes.mnHue *= 60.0; - - if( aRes.mnHue < 0.0 ) - aRes.mnHue += 360.0; - } - - return aRes; - } - - double hsl2rgbHelper( double nValue1, double nValue2, double nHue ) - { - // clamp hue to [0,360] - nHue = fmod( nHue, 360.0 ); - - // cope with wrap-arounds - if( nHue < 0.0 ) - nHue += 360.0; - - if( nHue < 60.0 ) - return nValue1 + (nValue2 - nValue1)*nHue/60.0; - else if( nHue < 180.0 ) - return nValue2; - else if( nHue < 240.0 ) - return nValue1 + (nValue2 - nValue1)*(240.0 - nHue)/60.0; - else - return nValue1; - } - - RGBColor::RGBTriple hsl2rgb( double nHue, double nSaturation, double nLuminance ) - { - if( ::basegfx::fTools::equalZero( nSaturation ) ) - return RGBColor::RGBTriple(0.0, 0.0, nLuminance ); - - const double nVal1( getMagic(nLuminance, nSaturation) ); - const double nVal2( 2.0*nLuminance - nVal1 ); - - RGBColor::RGBTriple aRes; - - aRes.mnRed = hsl2rgbHelper( nVal2, - nVal1, - nHue + 120.0 ); - aRes.mnGreen = hsl2rgbHelper( nVal2, - nVal1, - nHue ); - aRes.mnBlue = hsl2rgbHelper( nVal2, - nVal1, - nHue - 120.0 ); - - return aRes; - } - - /// Truncate range of value to [0,1] - double truncateRangeStd( double nVal ) - { - return ::std::max( 0.0, - ::std::min( 1.0, - nVal ) ); - } - - /// Truncate range of value to [0,360] - double truncateRangeHue( double nVal ) - { - return ::std::max( 0.0, - ::std::min( 360.0, - nVal ) ); - } - - /// convert RGB color to sal_uInt8, truncate range appropriately before - sal_uInt8 colorToInt( double nCol ) - { - return static_cast< sal_uInt8 >( - ::basegfx::fround( truncateRangeStd( nCol ) * 255.0 ) ); - } - } - - - - // HSLColor - // =============================================== - - HSLColor::HSLTriple::HSLTriple() : - mnHue(), - mnSaturation(), - mnLuminance() - { - } - - HSLColor::HSLTriple::HSLTriple( double nHue, double nSaturation, double nLuminance ) : - mnHue( nHue ), - mnSaturation( nSaturation ), - mnLuminance( nLuminance ) - { - } - - HSLColor::HSLColor() : - maHSLTriple( 0.0, 0.0, 0.0 ), - mnMagicValue( getMagic( maHSLTriple.mnLuminance, - maHSLTriple.mnSaturation ) ) - { - } - - HSLColor::HSLColor( ::cppcanvas::Color::IntSRGBA nRGBColor ) : - maHSLTriple( rgb2hsl( ::cppcanvas::getRed( nRGBColor ) / 255.0, - ::cppcanvas::getGreen( nRGBColor ) / 255.0, - ::cppcanvas::getBlue( nRGBColor ) / 255.0 ) ), - mnMagicValue( getMagic( maHSLTriple.mnLuminance, - maHSLTriple.mnSaturation ) ) - { - } - - HSLColor::HSLColor( double nHue, double nSaturation, double nLuminance ) : - maHSLTriple( nHue, nSaturation, nLuminance ), - mnMagicValue( getMagic( maHSLTriple.mnLuminance, - maHSLTriple.mnSaturation ) ) - { - } - - HSLColor::HSLColor( const RGBColor& rColor ) : - maHSLTriple( rgb2hsl( truncateRangeStd( rColor.getRed() ), - truncateRangeStd( rColor.getGreen() ), - truncateRangeStd( rColor.getBlue() ) ) ), - mnMagicValue( getMagic( maHSLTriple.mnLuminance, - maHSLTriple.mnSaturation ) ) - { - } - - double HSLColor::getHue() const - { - return maHSLTriple.mnHue; - } - - double HSLColor::getSaturation() const - { - return maHSLTriple.mnSaturation; - } - - double HSLColor::getLuminance() const - { - return maHSLTriple.mnLuminance; - } - - HSLColor operator+( const HSLColor& rLHS, const HSLColor& rRHS ) - { - return HSLColor( rLHS.getHue() + rRHS.getHue(), - rLHS.getSaturation() + rRHS.getSaturation(), - rLHS.getLuminance() + rRHS.getLuminance() ); - } - - HSLColor operator*( const HSLColor& rLHS, const HSLColor& rRHS ) - { - return HSLColor( rLHS.getHue() * rRHS.getHue(), - rLHS.getSaturation() * rRHS.getSaturation(), - rLHS.getLuminance() * rRHS.getLuminance() ); - } - - HSLColor operator*( double nFactor, const HSLColor& rRHS ) - { - return HSLColor( nFactor * rRHS.getHue(), - nFactor * rRHS.getSaturation(), - nFactor * rRHS.getLuminance() ); - } - - HSLColor interpolate( const HSLColor& rFrom, const HSLColor& rTo, double t, bool bCCW ) - { - const double nFromHue( rFrom.getHue() ); - const double nToHue ( rTo.getHue() ); - - double nHue=0.0; - - if( nFromHue <= nToHue && !bCCW ) - { - // interpolate hue clockwise. That is, hue starts at - // high values and ends at low ones. Therefore, we - // must 'cross' the 360 degrees and start at low - // values again (imagine the hues to lie on the - // circle, where values above 360 degrees are mapped - // back to [0,360)). - nHue = (1.0-t)*(nFromHue + 360.0) + t*nToHue; - } - else if( nFromHue > nToHue && bCCW ) - { - // interpolate hue counter-clockwise. That is, hue - // starts at high values and ends at low - // ones. Therefore, we must 'cross' the 360 degrees - // and start at low values again (imagine the hues to - // lie on the circle, where values above 360 degrees - // are mapped back to [0,360)). - nHue = (1.0-t)*nFromHue + t*(nToHue + 360.0); - } - else - { - // interpolate hue counter-clockwise. That is, hue - // starts at low values and ends at high ones (imagine - // the hue value as degrees on a circle, with - // increasing values going counter-clockwise) - nHue = (1.0-t)*nFromHue + t*nToHue; - } - - return HSLColor( nHue, - (1.0-t)*rFrom.getSaturation() + t*rTo.getSaturation(), - (1.0-t)*rFrom.getLuminance() + t*rTo.getLuminance() ); - } - - - - // RGBColor - // =============================================== - - - RGBColor::RGBTriple::RGBTriple() : - mnRed(), - mnGreen(), - mnBlue() - { - } - - RGBColor::RGBTriple::RGBTriple( double nRed, double nGreen, double nBlue ) : - mnRed( nRed ), - mnGreen( nGreen ), - mnBlue( nBlue ) - { - } - - RGBColor::RGBColor() : - maRGBTriple( 0.0, 0.0, 0.0 ) - { - } - - RGBColor::RGBColor( ::cppcanvas::Color::IntSRGBA nRGBColor ) : - maRGBTriple( ::cppcanvas::getRed( nRGBColor ) / 255.0, - ::cppcanvas::getGreen( nRGBColor ) / 255.0, - ::cppcanvas::getBlue( nRGBColor ) / 255.0 ) - { - } - - RGBColor::RGBColor( double nRed, double nGreen, double nBlue ) : - maRGBTriple( nRed, nGreen, nBlue ) - { - } - - RGBColor::RGBColor( const HSLColor& rColor ) : - maRGBTriple( hsl2rgb( truncateRangeHue( rColor.getHue() ), - truncateRangeStd( rColor.getSaturation() ), - truncateRangeStd( rColor.getLuminance() ) ) ) - { - } - - double RGBColor::getRed() const - { - return maRGBTriple.mnRed; - } - - double RGBColor::getGreen() const - { - return maRGBTriple.mnGreen; - } - - double RGBColor::getBlue() const - { - return maRGBTriple.mnBlue; - } - - ::cppcanvas::Color::IntSRGBA RGBColor::getIntegerColor() const - { - return ::cppcanvas::makeColor( colorToInt( getRed() ), - colorToInt( getGreen() ), - colorToInt( getBlue() ), - 255 ); - } - - RGBColor operator+( const RGBColor& rLHS, const RGBColor& rRHS ) - { - return RGBColor( rLHS.getRed() + rRHS.getRed(), - rLHS.getGreen() + rRHS.getGreen(), - rLHS.getBlue() + rRHS.getBlue() ); - } - - RGBColor operator*( const RGBColor& rLHS, const RGBColor& rRHS ) - { - return RGBColor( rLHS.getRed() * rRHS.getRed(), - rLHS.getGreen() * rRHS.getGreen(), - rLHS.getBlue() * rRHS.getBlue() ); - } - - RGBColor operator*( double nFactor, const RGBColor& rRHS ) - { - return RGBColor( nFactor * rRHS.getRed(), - nFactor * rRHS.getGreen(), - nFactor * rRHS.getBlue() ); - } - - RGBColor interpolate( const RGBColor& rFrom, const RGBColor& rTo, double t ) - { - return RGBColor( (1.0-t)*rFrom.getRed() + t*rTo.getRed(), - (1.0-t)*rFrom.getGreen() + t*rTo.getGreen(), - (1.0-t)*rFrom.getBlue() + t*rTo.getBlue() ); - } - } -} - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |