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|
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/*
* This file is part of the LibreOffice project.
*
* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/.
*
* This file incorporates work covered by the following license notice:
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed
* with this work for additional information regarding copyright
* ownership. The ASF licenses this file to you under the Apache
* License, Version 2.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
#include "oox/drawingml/color.hxx"
#include <algorithm>
#include <math.h>
#include <osl/diagnose.h>
#include "oox/helper/containerhelper.hxx"
#include "oox/helper/graphichelper.hxx"
#include "oox/drawingml/drawingmltypes.hxx"
#include "oox/token/namespaces.hxx"
#include "oox/token/tokens.hxx"
namespace oox {
namespace drawingml {
namespace {
/** Global storage for predefined color values used in OOXML file formats. */
struct PresetColorsPool
{
typedef ::std::vector< sal_Int32 > ColorVector;
ColorVector maDmlColors; /// Predefined colors in DrawingML, indexed by XML token.
ColorVector maVmlColors; /// Predefined colors in VML, indexed by XML token.
explicit PresetColorsPool();
};
PresetColorsPool::PresetColorsPool() :
maDmlColors( static_cast< size_t >( XML_TOKEN_COUNT ), API_RGB_TRANSPARENT ),
maVmlColors( static_cast< size_t >( XML_TOKEN_COUNT ), API_RGB_TRANSPARENT )
{
// predefined colors in DrawingML (map XML token identifiers to RGB values)
static const sal_Int32 spnDmlColors[] =
{
XML_aliceBlue, 0xF0F8FF, XML_antiqueWhite, 0xFAEBD7,
XML_aqua, 0x00FFFF, XML_aquamarine, 0x7FFFD4,
XML_azure, 0xF0FFFF, XML_beige, 0xF5F5DC,
XML_bisque, 0xFFE4C4, XML_black, 0x000000,
XML_blanchedAlmond, 0xFFEBCD, XML_blue, 0x0000FF,
XML_blueViolet, 0x8A2BE2, XML_brown, 0xA52A2A,
XML_burlyWood, 0xDEB887, XML_cadetBlue, 0x5F9EA0,
XML_chartreuse, 0x7FFF00, XML_chocolate, 0xD2691E,
XML_coral, 0xFF7F50, XML_cornflowerBlue, 0x6495ED,
XML_cornsilk, 0xFFF8DC, XML_crimson, 0xDC143C,
XML_cyan, 0x00FFFF, XML_deepPink, 0xFF1493,
XML_deepSkyBlue, 0x00BFFF, XML_dimGray, 0x696969,
XML_dkBlue, 0x00008B, XML_dkCyan, 0x008B8B,
XML_dkGoldenrod, 0xB8860B, XML_dkGray, 0xA9A9A9,
XML_dkGreen, 0x006400, XML_dkKhaki, 0xBDB76B,
XML_dkMagenta, 0x8B008B, XML_dkOliveGreen, 0x556B2F,
XML_dkOrange, 0xFF8C00, XML_dkOrchid, 0x9932CC,
XML_dkRed, 0x8B0000, XML_dkSalmon, 0xE9967A,
XML_dkSeaGreen, 0x8FBC8B, XML_dkSlateBlue, 0x483D8B,
XML_dkSlateGray, 0x2F4F4F, XML_dkTurquoise, 0x00CED1,
XML_dkViolet, 0x9400D3, XML_dodgerBlue, 0x1E90FF,
XML_firebrick, 0xB22222, XML_floralWhite, 0xFFFAF0,
XML_forestGreen, 0x228B22, XML_fuchsia, 0xFF00FF,
XML_gainsboro, 0xDCDCDC, XML_ghostWhite, 0xF8F8FF,
XML_gold, 0xFFD700, XML_goldenrod, 0xDAA520,
XML_gray, 0x808080, XML_green, 0x008000,
XML_greenYellow, 0xADFF2F, XML_honeydew, 0xF0FFF0,
XML_hotPink, 0xFF69B4, XML_indianRed, 0xCD5C5C,
XML_indigo, 0x4B0082, XML_ivory, 0xFFFFF0,
XML_khaki, 0xF0E68C, XML_lavender, 0xE6E6FA,
XML_lavenderBlush, 0xFFF0F5, XML_lawnGreen, 0x7CFC00,
XML_lemonChiffon, 0xFFFACD, XML_lime, 0x00FF00,
XML_limeGreen, 0x32CD32, XML_linen, 0xFAF0E6,
XML_ltBlue, 0xADD8E6, XML_ltCoral, 0xF08080,
XML_ltCyan, 0xE0FFFF, XML_ltGoldenrodYellow, 0xFAFA78,
XML_ltGray, 0xD3D3D3, XML_ltGreen, 0x90EE90,
XML_ltPink, 0xFFB6C1, XML_ltSalmon, 0xFFA07A,
XML_ltSeaGreen, 0x20B2AA, XML_ltSkyBlue, 0x87CEFA,
XML_ltSlateGray, 0x778899, XML_ltSteelBlue, 0xB0C4DE,
XML_ltYellow, 0xFFFFE0, XML_magenta, 0xFF00FF,
XML_maroon, 0x800000, XML_medAquamarine, 0x66CDAA,
XML_medBlue, 0x0000CD, XML_medOrchid, 0xBA55D3,
XML_medPurple, 0x9370DB, XML_medSeaGreen, 0x3CB371,
XML_medSlateBlue, 0x7B68EE, XML_medSpringGreen, 0x00FA9A,
XML_medTurquoise, 0x48D1CC, XML_medVioletRed, 0xC71585,
XML_midnightBlue, 0x191970, XML_mintCream, 0xF5FFFA,
XML_mistyRose, 0xFFE4E1, XML_moccasin, 0xFFE4B5,
XML_navajoWhite, 0xFFDEAD, XML_navy, 0x000080,
XML_oldLace, 0xFDF5E6, XML_olive, 0x808000,
XML_oliveDrab, 0x6B8E23, XML_orange, 0xFFA500,
XML_orangeRed, 0xFF4500, XML_orchid, 0xDA70D6,
XML_paleGoldenrod, 0xEEE8AA, XML_paleGreen, 0x98FB98,
XML_paleTurquoise, 0xAFEEEE, XML_paleVioletRed, 0xDB7093,
XML_papayaWhip, 0xFFEFD5, XML_peachPuff, 0xFFDAB9,
XML_peru, 0xCD853F, XML_pink, 0xFFC0CB,
XML_plum, 0xDDA0DD, XML_powderBlue, 0xB0E0E6,
XML_purple, 0x800080, XML_red, 0xFF0000,
XML_rosyBrown, 0xBC8F8F, XML_royalBlue, 0x4169E1,
XML_saddleBrown, 0x8B4513, XML_salmon, 0xFA8072,
XML_sandyBrown, 0xF4A460, XML_seaGreen, 0x2E8B57,
XML_seaShell, 0xFFF5EE, XML_sienna, 0xA0522D,
XML_silver, 0xC0C0C0, XML_skyBlue, 0x87CEEB,
XML_slateBlue, 0x6A5ACD, XML_slateGray, 0x708090,
XML_snow, 0xFFFAFA, XML_springGreen, 0x00FF7F,
XML_steelBlue, 0x4682B4, XML_tan, 0xD2B48C,
XML_teal, 0x008080, XML_thistle, 0xD8BFD8,
XML_tomato, 0xFF6347, XML_turquoise, 0x40E0D0,
XML_violet, 0xEE82EE, XML_wheat, 0xF5DEB3,
XML_white, 0xFFFFFF, XML_whiteSmoke, 0xF5F5F5,
XML_yellow, 0xFFFF00, XML_yellowGreen, 0x9ACD32
};
for( const sal_Int32* pnEntry = spnDmlColors; pnEntry < STATIC_ARRAY_END( spnDmlColors ); pnEntry += 2 )
maDmlColors[ static_cast< size_t >( pnEntry[ 0 ] ) ] = pnEntry[ 1 ];
// predefined colors in VML (map XML token identifiers to RGB values)
static const sal_Int32 spnVmlColors[] =
{
XML_aqua, 0x00FFFF, XML_black, 0x000000,
XML_blue, 0x0000FF, XML_fuchsia, 0xFF00FF,
XML_gray, 0x808080, XML_green, 0x008000,
XML_lime, 0x00FF00, XML_maroon, 0x800000,
XML_navy, 0x000080, XML_olive, 0x808000,
XML_purple, 0x800080, XML_red, 0xFF0000,
XML_silver, 0xC0C0C0, XML_teal, 0x008080,
XML_white, 0xFFFFFF, XML_yellow, 0xFFFF00
};
for( const sal_Int32* pnEntry = spnVmlColors; pnEntry < STATIC_ARRAY_END( spnVmlColors ); pnEntry += 2 )
maVmlColors[ static_cast< size_t >( pnEntry[ 0 ] ) ] = pnEntry[ 1 ];
}
struct StaticPresetColorsPool : public ::rtl::Static< PresetColorsPool, StaticPresetColorsPool > {};
const double DEC_GAMMA = 2.3;
const double INC_GAMMA = 1.0 / DEC_GAMMA;
inline void lclRgbToRgbComponents( sal_Int32& ornR, sal_Int32& ornG, sal_Int32& ornB, sal_Int32 nRgb )
{
ornR = (nRgb >> 16) & 0xFF;
ornG = (nRgb >> 8) & 0xFF;
ornB = nRgb & 0xFF;
}
inline sal_Int32 lclRgbComponentsToRgb( sal_Int32 nR, sal_Int32 nG, sal_Int32 nB )
{
return static_cast< sal_Int32 >( (nR << 16) | (nG << 8) | nB );
}
inline sal_Int32 lclRgbCompToCrgbComp( sal_Int32 nRgbComp )
{
return static_cast< sal_Int32 >( nRgbComp * MAX_PERCENT / 255 );
}
inline sal_Int32 lclCrgbCompToRgbComp( sal_Int32 nCrgbComp )
{
return static_cast< sal_Int32 >( nCrgbComp * 255 / MAX_PERCENT );
}
inline sal_Int32 lclGamma( sal_Int32 nComp, double fGamma )
{
return static_cast< sal_Int32 >( pow( static_cast< double >( nComp ) / MAX_PERCENT, fGamma ) * MAX_PERCENT + 0.5 );
}
void lclSetValue( sal_Int32& ornValue, sal_Int32 nNew, sal_Int32 nMax = MAX_PERCENT )
{
OSL_ENSURE( (0 <= nNew) && (nNew <= nMax), "lclSetValue - invalid value" );
if( (0 <= nNew) && (nNew <= nMax) )
ornValue = nNew;
}
void lclModValue( sal_Int32& ornValue, sal_Int32 nMod, sal_Int32 nMax = MAX_PERCENT )
{
OSL_ENSURE( (0 <= nMod), "lclModValue - invalid modificator" );
ornValue = getLimitedValue< sal_Int32, double >( static_cast< double >( ornValue ) * nMod / MAX_PERCENT, 0, nMax );
}
void lclOffValue( sal_Int32& ornValue, sal_Int32 nOff, sal_Int32 nMax = MAX_PERCENT )
{
OSL_ENSURE( (-nMax <= nOff) && (nOff <= nMax), "lclOffValue - invalid offset" );
ornValue = getLimitedValue< sal_Int32, sal_Int32 >( ornValue + nOff, 0, nMax );
}
} // namespace
Color::Color() :
meMode( COLOR_UNUSED ),
mnC1( 0 ),
mnC2( 0 ),
mnC3( 0 ),
mnAlpha( MAX_PERCENT )
{
}
Color::~Color()
{
}
sal_Int32 Color::getDmlPresetColor( sal_Int32 nToken, sal_Int32 nDefaultRgb )
{
/* Do not pass nDefaultRgb to ContainerHelper::getVectorElement(), to be
able to catch the existing vector entries without corresponding XML
token identifier. */
sal_Int32 nRgbValue = ContainerHelper::getVectorElement( StaticPresetColorsPool::get().maDmlColors, nToken, API_RGB_TRANSPARENT );
return (nRgbValue >= 0) ? nRgbValue : nDefaultRgb;
}
sal_Int32 Color::getVmlPresetColor( sal_Int32 nToken, sal_Int32 nDefaultRgb )
{
/* Do not pass nDefaultRgb to ContainerHelper::getVectorElement(), to be
able to catch the existing vector entries without corresponding XML
token identifier. */
sal_Int32 nRgbValue = ContainerHelper::getVectorElement( StaticPresetColorsPool::get().maVmlColors, nToken, API_RGB_TRANSPARENT );
return (nRgbValue >= 0) ? nRgbValue : nDefaultRgb;
}
void Color::setUnused()
{
meMode = COLOR_UNUSED;
}
void Color::setSrgbClr( sal_Int32 nRgb )
{
OSL_ENSURE( (0 <= nRgb) && (nRgb <= 0xFFFFFF), "Color::setSrgbClr - invalid RGB value" );
meMode = COLOR_RGB;
lclRgbToRgbComponents( mnC1, mnC2, mnC3, nRgb );
}
void Color::setScrgbClr( sal_Int32 nR, sal_Int32 nG, sal_Int32 nB )
{
OSL_ENSURE( (0 <= nR) && (nR <= MAX_PERCENT), "Color::setScrgbClr - invalid red value" );
OSL_ENSURE( (0 <= nG) && (nG <= MAX_PERCENT), "Color::setScrgbClr - invalid green value" );
OSL_ENSURE( (0 <= nB) && (nB <= MAX_PERCENT), "Color::setScrgbClr - invalid blue value" );
meMode = COLOR_CRGB;
mnC1 = getLimitedValue< sal_Int32, sal_Int32 >( nR, 0, MAX_PERCENT );
mnC2 = getLimitedValue< sal_Int32, sal_Int32 >( nG, 0, MAX_PERCENT );
mnC3 = getLimitedValue< sal_Int32, sal_Int32 >( nB, 0, MAX_PERCENT );
}
void Color::setHslClr( sal_Int32 nHue, sal_Int32 nSat, sal_Int32 nLum )
{
OSL_ENSURE( (0 <= nHue) && (nHue <= MAX_DEGREE), "Color::setHslClr - invalid hue value" );
OSL_ENSURE( (0 <= nSat) && (nSat <= MAX_PERCENT), "Color::setHslClr - invalid saturation value" );
OSL_ENSURE( (0 <= nLum) && (nLum <= MAX_PERCENT), "Color::setHslClr - invalid luminance value" );
meMode = COLOR_HSL;
mnC1 = getLimitedValue< sal_Int32, sal_Int32 >( nHue, 0, MAX_DEGREE );
mnC2 = getLimitedValue< sal_Int32, sal_Int32 >( nSat, 0, MAX_PERCENT );
mnC3 = getLimitedValue< sal_Int32, sal_Int32 >( nLum, 0, MAX_PERCENT );
}
void Color::setPrstClr( sal_Int32 nToken )
{
sal_Int32 nRgbValue = getDmlPresetColor( nToken, API_RGB_TRANSPARENT );
OSL_ENSURE( nRgbValue >= 0, "Color::setPrstClr - invalid preset color token" );
if( nRgbValue >= 0 )
setSrgbClr( nRgbValue );
}
void Color::setSchemeClr( sal_Int32 nToken )
{
OSL_ENSURE( nToken != XML_TOKEN_INVALID, "Color::setSchemeClr - invalid color token" );
meMode = (nToken == XML_phClr) ? COLOR_PH : COLOR_SCHEME;
mnC1 = nToken;
}
void Color::setPaletteClr( sal_Int32 nPaletteIdx )
{
OSL_ENSURE( nPaletteIdx >= 0, "Color::setPaletteClr - invalid palette index" );
meMode = COLOR_PALETTE;
mnC1 = nPaletteIdx;
}
void Color::setSysClr( sal_Int32 nToken, sal_Int32 nLastRgb )
{
OSL_ENSURE( (-1 <= nLastRgb) && (nLastRgb <= 0xFFFFFF), "Color::setSysClr - invalid RGB value" );
meMode = COLOR_SYSTEM;
mnC1 = nToken;
mnC2 = nLastRgb;
}
void Color::addTransformation( sal_Int32 nElement, sal_Int32 nValue )
{
/* Execute alpha transformations directly, store other transformations in
a vector, they may depend on a scheme base color which will be resolved
in Color::getColor(). */
sal_Int32 nToken = getBaseToken( nElement );
switch( nToken )
{
case XML_alpha: lclSetValue( mnAlpha, nValue ); break;
case XML_alphaMod: lclModValue( mnAlpha, nValue ); break;
case XML_alphaOff: lclOffValue( mnAlpha, nValue ); break;
default: maTransforms.push_back( Transformation( nToken, nValue ) );
}
sal_Int32 nSize = maInteropTransformations.getLength();
maInteropTransformations.realloc(nSize + 1);
maInteropTransformations[nSize].Name = getColorTransformationName( nToken );
maInteropTransformations[nSize].Value = css::uno::Any( nValue );
}
void Color::addChartTintTransformation( double fTint )
{
sal_Int32 nValue = getLimitedValue< sal_Int32, double >( fTint * MAX_PERCENT + 0.5, -MAX_PERCENT, MAX_PERCENT );
if( nValue < 0 )
maTransforms.push_back( Transformation( XML_shade, nValue + MAX_PERCENT ) );
else if( nValue > 0 )
maTransforms.push_back( Transformation( XML_tint, MAX_PERCENT - nValue ) );
}
void Color::addExcelTintTransformation( double fTint )
{
sal_Int32 nValue = getLimitedValue< sal_Int32, double >( fTint * MAX_PERCENT + 0.5, -MAX_PERCENT, MAX_PERCENT );
maTransforms.push_back( Transformation( XLS_TOKEN( tint ), nValue ) );
}
void Color::clearTransformations()
{
maTransforms.clear();
maInteropTransformations.realloc(0);
clearTransparence();
}
OUString Color::getColorTransformationName( sal_Int32 nElement )
{
switch( nElement )
{
case XML_red: return OUString( "red" );
case XML_redMod: return OUString( "redMod" );
case XML_redOff: return OUString( "redOff" );
case XML_green: return OUString( "green" );
case XML_greenMod: return OUString( "greenMod" );
case XML_greenOff: return OUString( "greenOff" );
case XML_blue: return OUString( "blue" );
case XML_blueMod: return OUString( "blueMod" );
case XML_blueOff: return OUString( "blueOff" );
case XML_alpha: return OUString( "alpha" );
case XML_alphaMod: return OUString( "alphaMod" );
case XML_alphaOff: return OUString( "alphaOff" );
case XML_hue: return OUString( "hue" );
case XML_hueMod: return OUString( "hueMod" );
case XML_hueOff: return OUString( "hueOff" );
case XML_sat: return OUString( "sat" );
case XML_satMod: return OUString( "satMod" );
case XML_satOff: return OUString( "satOff" );
case XML_lum: return OUString( "lum" );
case XML_lumMod: return OUString( "lumMod" );
case XML_lumOff: return OUString( "lumOff" );
case XML_shade: return OUString( "shade" );
case XML_tint: return OUString( "tint" );
case XML_gray: return OUString( "gray" );
case XML_comp: return OUString( "comp" );
case XML_inv: return OUString( "inv" );
case XML_gamma: return OUString( "gamma" );
case XML_invGamma: return OUString( "invGamma" );
}
SAL_WARN( "oox.drawingml", "Color::getColorTransformationName - unexpected transformation type" );
return OUString();
}
sal_Int32 Color::getColorTransformationToken( const OUString& sName )
{
if( sName == "red" )
return XML_red;
else if( sName == "redMod" )
return XML_redMod;
else if( sName == "redOff" )
return XML_redOff;
else if( sName == "green" )
return XML_green;
else if( sName == "greenMod" )
return XML_greenMod;
else if( sName == "greenOff" )
return XML_greenOff;
else if( sName == "blue" )
return XML_blue;
else if( sName == "blueMod" )
return XML_blueMod;
else if( sName == "blueOff" )
return XML_blueOff;
else if( sName == "alpha" )
return XML_alpha;
else if( sName == "alphaMod" )
return XML_alphaMod;
else if( sName == "alphaOff" )
return XML_alphaOff;
else if( sName == "hue" )
return XML_hue;
else if( sName == "hueMod" )
return XML_hueMod;
else if( sName == "hueOff" )
return XML_hueOff;
else if( sName == "sat" )
return XML_sat;
else if( sName == "satMod" )
return XML_satMod;
else if( sName == "satOff" )
return XML_satOff;
else if( sName == "lum" )
return XML_lum;
else if( sName == "lumMod" )
return XML_lumMod;
else if( sName == "lumOff" )
return XML_lumOff;
else if( sName == "shade" )
return XML_shade;
else if( sName == "tint" )
return XML_tint;
else if( sName == "gray" )
return XML_gray;
else if( sName == "comp" )
return XML_comp;
else if( sName == "inv" )
return XML_inv;
else if( sName == "gamma" )
return XML_gamma;
else if( sName == "invGamma" )
return XML_invGamma;
SAL_WARN( "oox.drawingml", "Color::getColorTransformationToken - unexpected transformation type" );
return XML_TOKEN_INVALID;
}
void Color::clearTransparence()
{
mnAlpha = MAX_PERCENT;
}
sal_Int32 Color::getColor( const GraphicHelper& rGraphicHelper, sal_Int32 nPhClr ) const
{
const sal_Int32 nTempC1 = mnC1;
const sal_Int32 nTempC2 = mnC2;
const sal_Int32 nTempC3 = mnC3;
const ColorMode eTempMode = meMode;
switch( meMode )
{
case COLOR_UNUSED: mnC1 = API_RGB_TRANSPARENT; break;
case COLOR_RGB: break; // nothing to do
case COLOR_CRGB: break; // nothing to do
case COLOR_HSL: break; // nothing to do
case COLOR_SCHEME: setResolvedRgb( rGraphicHelper.getSchemeColor( mnC1 ) ); break;
case COLOR_PALETTE: setResolvedRgb( rGraphicHelper.getPaletteColor( mnC1 ) ); break;
case COLOR_SYSTEM: setResolvedRgb( rGraphicHelper.getSystemColor( mnC1, mnC2 ) ); break;
case COLOR_PH: setResolvedRgb( nPhClr ); break;
case COLOR_FINAL: return mnC1;
}
// if color is UNUSED or turns to UNUSED in setResolvedRgb, do not perform transformations
if( meMode != COLOR_UNUSED )
{
for( TransformVec::const_iterator aIt = maTransforms.begin(), aEnd = maTransforms.end(); aIt != aEnd; ++aIt )
{
switch( aIt->mnToken )
{
case XML_red: toCrgb(); lclSetValue( mnC1, aIt->mnValue ); break;
case XML_redMod: toCrgb(); lclModValue( mnC1, aIt->mnValue ); break;
case XML_redOff: toCrgb(); lclOffValue( mnC1, aIt->mnValue ); break;
case XML_green: toCrgb(); lclSetValue( mnC2, aIt->mnValue ); break;
case XML_greenMod: toCrgb(); lclModValue( mnC2, aIt->mnValue ); break;
case XML_greenOff: toCrgb(); lclOffValue( mnC2, aIt->mnValue ); break;
case XML_blue: toCrgb(); lclSetValue( mnC3, aIt->mnValue ); break;
case XML_blueMod: toCrgb(); lclModValue( mnC3, aIt->mnValue ); break;
case XML_blueOff: toCrgb(); lclOffValue( mnC3, aIt->mnValue ); break;
case XML_hue: toHsl(); lclSetValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
case XML_hueMod: toHsl(); lclModValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
case XML_hueOff: toHsl(); lclOffValue( mnC1, aIt->mnValue, MAX_DEGREE ); break;
case XML_sat: toHsl(); lclSetValue( mnC2, aIt->mnValue ); break;
case XML_satMod: toHsl(); lclModValue( mnC2, aIt->mnValue ); break;
case XML_satOff: toHsl(); lclOffValue( mnC2, aIt->mnValue ); break;
case XML_lum:
toHsl();
lclSetValue( mnC3, aIt->mnValue );
// if color changes to black or white, it will stay gray if luminance changes again
if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
break;
case XML_lumMod:
toHsl();
lclModValue( mnC3, aIt->mnValue );
// if color changes to black or white, it will stay gray if luminance changes again
if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
break;
case XML_lumOff:
toHsl();
lclOffValue( mnC3, aIt->mnValue );
// if color changes to black or white, it will stay gray if luminance changes again
if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) mnC2 = 0;
break;
case XML_shade:
// shade: 0% = black, 100% = original color
toCrgb();
OSL_ENSURE( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid shade value" );
if( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
{
double fFactor = static_cast< double >( aIt->mnValue ) / MAX_PERCENT;
mnC1 = static_cast< sal_Int32 >( mnC1 * fFactor );
mnC2 = static_cast< sal_Int32 >( mnC2 * fFactor );
mnC3 = static_cast< sal_Int32 >( mnC3 * fFactor );
}
break;
case XML_tint:
// tint: 0% = white, 100% = original color
toCrgb();
OSL_ENSURE( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid tint value" );
if( (0 <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
{
double fFactor = static_cast< double >( aIt->mnValue ) / MAX_PERCENT;
mnC1 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC1) * fFactor );
mnC2 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC2) * fFactor );
mnC3 = static_cast< sal_Int32 >( MAX_PERCENT - (MAX_PERCENT - mnC3) * fFactor );
}
break;
case XLS_TOKEN( tint ):
// Excel tint: move luminance relative to current value
toHsl();
OSL_ENSURE( (-MAX_PERCENT <= aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT), "Color::getColor - invalid tint value" );
if( (-MAX_PERCENT <= aIt->mnValue) && (aIt->mnValue < 0) )
{
// negative: luminance towards 0% (black)
lclModValue( mnC3, aIt->mnValue + MAX_PERCENT );
}
else if( (0 < aIt->mnValue) && (aIt->mnValue <= MAX_PERCENT) )
{
// positive: luminance towards 100% (white)
mnC3 = MAX_PERCENT - mnC3;
lclModValue( mnC3, MAX_PERCENT - aIt->mnValue );
mnC3 = MAX_PERCENT - mnC3;
}
break;
case XML_gray:
// change color to gray, weighted RGB: 22% red, 72% green, 6% blue
toRgb();
mnC1 = mnC2 = mnC3 = (mnC1 * 22 + mnC2 * 72 + mnC3 * 6) / 100;
break;
case XML_comp:
// comp: rotate hue by 180 degrees, do not change lum/sat
toHsl();
(mnC1 += 180 * PER_DEGREE) %= MAX_DEGREE;
break;
case XML_inv:
// invert percentual RGB values
toCrgb();
mnC1 = MAX_PERCENT - mnC1;
mnC2 = MAX_PERCENT - mnC2;
mnC3 = MAX_PERCENT - mnC3;
break;
case XML_gamma:
// increase gamma of color
toCrgb();
mnC1 = lclGamma( mnC1, INC_GAMMA );
mnC2 = lclGamma( mnC2, INC_GAMMA );
mnC3 = lclGamma( mnC3, INC_GAMMA );
break;
case XML_invGamma:
// decrease gamma of color
toCrgb();
mnC1 = lclGamma( mnC1, DEC_GAMMA );
mnC2 = lclGamma( mnC2, DEC_GAMMA );
mnC3 = lclGamma( mnC3, DEC_GAMMA );
break;
}
}
// store resulting RGB value in mnC1
toRgb();
mnC1 = lclRgbComponentsToRgb( mnC1, mnC2, mnC3 );
}
else // if( meMode != COLOR_UNUSED )
{
mnC1 = API_RGB_TRANSPARENT;
}
sal_Int32 nRet = mnC1;
// Restore the original values when the color depends on one of the input
// parameters (rGraphicHelper or nPhClr)
if( eTempMode >= COLOR_SCHEME && eTempMode <= COLOR_PH )
{
mnC1 = nTempC1;
mnC2 = nTempC2;
mnC3 = nTempC3;
meMode = eTempMode;
}
else
{
meMode = COLOR_FINAL;
}
if( meMode == COLOR_FINAL )
maTransforms.clear();
return nRet;
}
bool Color::hasTransparency() const
{
return mnAlpha < MAX_PERCENT;
}
sal_Int16 Color::getTransparency() const
{
return static_cast< sal_Int16 >( (MAX_PERCENT - mnAlpha) / PER_PERCENT );
}
// private --------------------------------------------------------------------
void Color::setResolvedRgb( sal_Int32 nRgb ) const
{
meMode = (nRgb < 0) ? COLOR_UNUSED : COLOR_RGB;
lclRgbToRgbComponents( mnC1, mnC2, mnC3, nRgb );
}
void Color::toRgb() const
{
switch( meMode )
{
case COLOR_RGB:
// nothing to do
break;
case COLOR_CRGB:
meMode = COLOR_RGB;
mnC1 = lclCrgbCompToRgbComp( lclGamma( mnC1, INC_GAMMA ) );
mnC2 = lclCrgbCompToRgbComp( lclGamma( mnC2, INC_GAMMA ) );
mnC3 = lclCrgbCompToRgbComp( lclGamma( mnC3, INC_GAMMA ) );
break;
case COLOR_HSL:
{
meMode = COLOR_RGB;
double fR = 0.0, fG = 0.0, fB = 0.0;
if( (mnC2 == 0) || (mnC3 == MAX_PERCENT) )
{
fR = fG = fB = static_cast< double >( mnC3 ) / MAX_PERCENT;
}
else if( mnC3 > 0 )
{
// base color from hue
double fHue = static_cast< double >( mnC1 ) / MAX_DEGREE * 6.0; // interval [0.0, 6.0)
if( fHue <= 1.0 ) { fR = 1.0; fG = fHue; } // red...yellow
else if( fHue <= 2.0 ) { fR = 2.0 - fHue; fG = 1.0; } // yellow...green
else if( fHue <= 3.0 ) { fG = 1.0; fB = fHue - 2.0; } // green...cyan
else if( fHue <= 4.0 ) { fG = 4.0 - fHue; fB = 1.0; } // cyan...blue
else if( fHue <= 5.0 ) { fR = fHue - 4.0; fB = 1.0; } // blue...magenta
else { fR = 1.0; fB = 6.0 - fHue; } // magenta...red
// apply saturation
double fSat = static_cast< double >( mnC2 ) / MAX_PERCENT;
fR = (fR - 0.5) * fSat + 0.5;
fG = (fG - 0.5) * fSat + 0.5;
fB = (fB - 0.5) * fSat + 0.5;
// apply luminance
double fLum = 2.0 * static_cast< double >( mnC3 ) / MAX_PERCENT - 1.0; // interval [-1.0, 1.0]
if( fLum < 0.0 )
{
double fShade = fLum + 1.0; // interval [0.0, 1.0] (black...full color)
fR *= fShade;
fG *= fShade;
fB *= fShade;
}
else if( fLum > 0.0 )
{
double fTint = 1.0 - fLum; // interval [0.0, 1.0] (white...full color)
fR = 1.0 - ((1.0 - fR) * fTint);
fG = 1.0 - ((1.0 - fG) * fTint);
fB = 1.0 - ((1.0 - fB) * fTint);
}
}
mnC1 = static_cast< sal_Int32 >( fR * 255.0 + 0.5 );
mnC2 = static_cast< sal_Int32 >( fG * 255.0 + 0.5 );
mnC3 = static_cast< sal_Int32 >( fB * 255.0 + 0.5 );
}
break;
default:
OSL_FAIL( "Color::toRgb - unexpected color mode" );
}
}
void Color::toCrgb() const
{
switch( meMode )
{
case COLOR_HSL:
toRgb();
// run through!
case COLOR_RGB:
meMode = COLOR_CRGB;
mnC1 = lclGamma( lclRgbCompToCrgbComp( mnC1 ), DEC_GAMMA );
mnC2 = lclGamma( lclRgbCompToCrgbComp( mnC2 ), DEC_GAMMA );
mnC3 = lclGamma( lclRgbCompToCrgbComp( mnC3 ), DEC_GAMMA );
break;
case COLOR_CRGB:
// nothing to do
break;
default:
OSL_FAIL( "Color::toCrgb - unexpected color mode" );
}
}
void Color::toHsl() const
{
switch( meMode )
{
case COLOR_CRGB:
toRgb();
// run through!
case COLOR_RGB:
{
meMode = COLOR_HSL;
double fR = static_cast< double >( mnC1 ) / 255.0; // red [0.0, 1.0]
double fG = static_cast< double >( mnC2 ) / 255.0; // green [0.0, 1.0]
double fB = static_cast< double >( mnC3 ) / 255.0; // blue [0.0, 1.0]
double fMin = ::std::min( ::std::min( fR, fG ), fB );
double fMax = ::std::max( ::std::max( fR, fG ), fB );
double fD = fMax - fMin;
using ::rtl::math::approxEqual;
// hue: 0deg = red, 120deg = green, 240deg = blue
if( fD == 0.0 ) // black/gray/white
mnC1 = 0;
else if( approxEqual(fMax, fR, 64) ) // magenta...red...yellow
mnC1 = static_cast< sal_Int32 >( ((fG - fB) / fD * 60.0 + 360.0) * PER_DEGREE + 0.5 ) % MAX_DEGREE;
else if( approxEqual(fMax, fG, 64) ) // yellow...green...cyan
mnC1 = static_cast< sal_Int32 >( ((fB - fR) / fD * 60.0 + 120.0) * PER_DEGREE + 0.5 );
else // cyan...blue...magenta
mnC1 = static_cast< sal_Int32 >( ((fR - fG) / fD * 60.0 + 240.0) * PER_DEGREE + 0.5 );
// luminance: 0% = black, 50% = full color, 100% = white
mnC3 = static_cast< sal_Int32 >( (fMin + fMax) / 2.0 * MAX_PERCENT + 0.5 );
// saturation: 0% = gray, 100% = full color
if( (mnC3 == 0) || (mnC3 == MAX_PERCENT) ) // black/white
mnC2 = 0;
else if( mnC3 <= 50 * PER_PERCENT ) // dark...full color
mnC2 = static_cast< sal_Int32 >( fD / (fMin + fMax) * MAX_PERCENT + 0.5 );
else // full color...light
mnC2 = static_cast< sal_Int32 >( fD / (2.0 - fMax - fMin) * MAX_PERCENT + 0.5 );
}
break;
case COLOR_HSL:
// nothing to do
break;
default:
OSL_FAIL( "Color::toHsl - unexpected color mode" );
}
}
} // namespace drawingml
} // namespace oox
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