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Diffstat (limited to 'oox/source/drawingml/color.cxx')
| -rw-r--r-- | oox/source/drawingml/color.cxx | 670 |
1 files changed, 670 insertions, 0 deletions
diff --git a/oox/source/drawingml/color.cxx b/oox/source/drawingml/color.cxx new file mode 100644 index 000000000000..de061a91fcb4 --- /dev/null +++ b/oox/source/drawingml/color.cxx @@ -0,0 +1,670 @@ +/************************************************************************* + * + * 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. + * + ************************************************************************/ + +#include "oox/drawingml/color.hxx" +#include <algorithm> +#include <math.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" + +using ::rtl::OUString; + +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() +{ +} + +/*static*/ 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; +} + +/*static*/ 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 ) ); + } +} + +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(); + clearTransparence(); +} + +void Color::clearTransparence() +{ + mnAlpha = MAX_PERCENT; +} + +sal_Int32 Color::getColor( const GraphicHelper& rGraphicHelper, sal_Int32 nPhClr ) const +{ + /* Special handling for theme style list placeholder colors (state + COLOR_PH), Color::getColor() may be called with different placeholder + colors in the nPhClr parameter. Therefore, the resolved color will not + be stored in this object, thus the state COLOR_FINAL will not be + reached and the transformation container will not be cleared, but the + original COLOR_PH state will be restored instead. */ + bool bIsPh = false; + + 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 ); bIsPh = true; 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; + } + + meMode = bIsPh ? COLOR_PH : COLOR_FINAL; + if( meMode == COLOR_FINAL ) + maTransforms.clear(); + return mnC1; +} + +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_ENSURE( false, "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_ENSURE( false, "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; + + // hue: 0deg = red, 120deg = green, 240deg = blue + if( fD == 0.0 ) // black/gray/white + mnC1 = 0; + else if( fMax == fR ) // magenta...red...yellow + mnC1 = static_cast< sal_Int32 >( ((fG - fB) / fD * 60.0 + 360.0) * PER_DEGREE + 0.5 ) % MAX_DEGREE; + else if( fMax == fG ) // 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_ENSURE( false, "Color::toHsl - unexpected color mode" ); + } +} + +// ============================================================================ + +} // namespace drawingml +} // namespace oox + |