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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 <sal/config.h>
#include <iomanip>
#include <sstream>
#include <stdlib.h>
#include <tools/color.hxx>
#include <tools/debug.hxx>
#include <tools/stream.hxx>
#include <tools/rc.hxx>
#include <tools/rcid.h>
#include <tools/resid.hxx>
#include <tools/rc.h>
#include <tools/helpers.hxx>
#include <basegfx/color/bcolortools.hxx>
Color::Color( const ResId& rResId )
{
rResId.SetRT( RSC_COLOR );
ResMgr* pResMgr = rResId.GetResMgr();
if ( pResMgr && pResMgr->GetResource( rResId ) )
{
// Header ueberspringen
pResMgr->Increment( sizeof( RSHEADER_TYPE ) );
// Daten laden
sal_uInt16 nRed = pResMgr->ReadShort();
sal_uInt16 nGreen = pResMgr->ReadShort();
sal_uInt16 nBlue = pResMgr->ReadShort();
// one more historical sal_uIntPtr
pResMgr->ReadLong();
// RGB-Farbe
mnColor = RGB_COLORDATA( nRed>>8, nGreen>>8, nBlue>>8 );
}
else
{
mnColor = RGB_COLORDATA( 0, 0, 0 );
}
}
sal_uInt8 Color::GetColorError( const Color& rCompareColor ) const
{
const long nErrAbs = labs( (long) rCompareColor.GetRed() - GetRed() ) +
labs( (long) rCompareColor.GetGreen() - GetGreen() ) +
labs( (long) rCompareColor.GetBlue() - GetBlue() );
return (sal_uInt8) FRound( nErrAbs * 0.3333333333 );
}
void Color::IncreaseLuminance( sal_uInt8 cLumInc )
{
SetRed( (sal_uInt8) SAL_BOUND( (long) COLORDATA_RED( mnColor ) + cLumInc, 0L, 255L ) );
SetGreen( (sal_uInt8) SAL_BOUND( (long) COLORDATA_GREEN( mnColor ) + cLumInc, 0L, 255L ) );
SetBlue( (sal_uInt8) SAL_BOUND( (long) COLORDATA_BLUE( mnColor ) + cLumInc, 0L, 255L ) );
}
void Color::DecreaseLuminance( sal_uInt8 cLumDec )
{
SetRed( (sal_uInt8) SAL_BOUND( (long) COLORDATA_RED( mnColor ) - cLumDec, 0L, 255L ) );
SetGreen( (sal_uInt8) SAL_BOUND( (long) COLORDATA_GREEN( mnColor ) - cLumDec, 0L, 255L ) );
SetBlue( (sal_uInt8) SAL_BOUND( (long) COLORDATA_BLUE( mnColor ) - cLumDec, 0L, 255L ) );
}
void Color::DecreaseContrast( sal_uInt8 cContDec )
{
if( cContDec )
{
const double fM = ( 128.0 - 0.4985 * cContDec ) / 128.0;
const double fOff = 128.0 - fM * 128.0;
SetRed( (sal_uInt8) SAL_BOUND( FRound( COLORDATA_RED( mnColor ) * fM + fOff ), 0L, 255L ) );
SetGreen( (sal_uInt8) SAL_BOUND( FRound( COLORDATA_GREEN( mnColor ) * fM + fOff ), 0L, 255L ) );
SetBlue( (sal_uInt8) SAL_BOUND( FRound( COLORDATA_BLUE( mnColor ) * fM + fOff ), 0L, 255L ) );
}
}
void Color::Invert()
{
SetRed( ~COLORDATA_RED( mnColor ) );
SetGreen( ~COLORDATA_GREEN( mnColor ) );
SetBlue( ~COLORDATA_BLUE( mnColor ) );
}
bool Color::IsDark() const
{
return GetLuminance() <= 60;
}
bool Color::IsBright() const
{
return GetLuminance() >= 245;
}
// color space conversion
void Color::RGBtoHSB( sal_uInt16& nHue, sal_uInt16& nSat, sal_uInt16& nBri ) const
{
sal_uInt8 c[3];
sal_uInt8 cMax, cMin;
c[0] = GetRed();
c[1] = GetGreen();
c[2] = GetBlue();
cMax = c[0];
if( c[1] > cMax )
cMax = c[1];
if( c[2] > cMax )
cMax = c[2];
// Brightness = max(R, G, B);
nBri = cMax * 100 / 255;
cMin = c[0];
if( c[1] < cMin )
cMin = c[1];
if( c[2] < cMin )
cMin = c[2];
sal_uInt8 cDelta = cMax - cMin;
// Saturation = max - min / max
if( nBri > 0 )
nSat = cDelta * 100 / cMax;
else
nSat = 0;
if( nSat == 0 )
nHue = 0; // Default = undefined
else
{
double dHue = 0.0;
if( c[0] == cMax )
{
dHue = (double)( c[1] - c[2] ) / (double)cDelta;
}
else if( c[1] == cMax )
{
dHue = 2.0 + (double)( c[2] - c[0] ) / (double)cDelta;
}
else if ( c[2] == cMax )
{
dHue = 4.0 + (double)( c[0] - c[1] ) / (double)cDelta;
}
dHue *= 60.0;
if( dHue < 0.0 )
dHue += 360.0;
nHue = (sal_uInt16) dHue;
}
}
ColorData Color::HSBtoRGB( sal_uInt16 nHue, sal_uInt16 nSat, sal_uInt16 nBri )
{
sal_uInt8 cR=0,cG=0,cB=0;
sal_uInt8 nB = (sal_uInt8) ( nBri * 255 / 100 );
if( nSat == 0 )
{
cR = nB;
cG = nB;
cB = nB;
}
else
{
double dH = nHue;
double f;
sal_uInt16 n;
if( dH == 360.0 )
dH = 0.0;
dH /= 60.0;
n = (sal_uInt16) dH;
f = dH - n;
sal_uInt8 a = (sal_uInt8) ( nB * ( 100 - nSat ) / 100 );
sal_uInt8 b = (sal_uInt8) ( nB * ( 100 - ( (double)nSat * f ) ) / 100 );
sal_uInt8 c = (sal_uInt8) ( nB * ( 100 - ( (double)nSat * ( 1.0 - f ) ) ) / 100 );
switch( n )
{
case 0: cR = nB; cG = c; cB = a; break;
case 1: cR = b; cG = nB; cB = a; break;
case 2: cR = a; cG = nB; cB = c; break;
case 3: cR = a; cG = b; cB = nB; break;
case 4: cR = c; cG = a; cB = nB; break;
case 5: cR = nB; cG = a; cB = b; break;
}
}
return RGB_COLORDATA( cR, cG, cB );
}
SvStream& Color::Read( SvStream& rIStm )
{
rIStm.ReadUInt32( mnColor );
return rIStm;
}
SvStream& Color::Write( SvStream& rOStm ) const
{
rOStm.WriteUInt32( mnColor );
return rOStm;
}
OUString Color::AsRGBHexString() const
{
std::stringstream ss;
ss << std::hex << std::setfill ('0') << std::setw(6) << GetRGBColor();
return OUString::createFromAscii(ss.str().c_str());
}
#define COL_NAME_USER ((sal_uInt16)0x8000)
SvStream& ReadColor( SvStream& rIStream, Color& rColor )
{
sal_uInt16 nColorName;
rIStream.ReadUInt16( nColorName );
if ( nColorName & COL_NAME_USER )
{
sal_uInt16 nRed;
sal_uInt16 nGreen;
sal_uInt16 nBlue;
rIStream.ReadUInt16( nRed );
rIStream.ReadUInt16( nGreen );
rIStream.ReadUInt16( nBlue );
rColor.mnColor = RGB_COLORDATA( nRed>>8, nGreen>>8, nBlue>>8 );
}
else
{
static const ColorData aColAry[] =
{
COL_BLACK, // COL_BLACK
COL_BLUE, // COL_BLUE
COL_GREEN, // COL_GREEN
COL_CYAN, // COL_CYAN
COL_RED, // COL_RED
COL_MAGENTA, // COL_MAGENTA
COL_BROWN, // COL_BROWN
COL_GRAY, // COL_GRAY
COL_LIGHTGRAY, // COL_LIGHTGRAY
COL_LIGHTBLUE, // COL_LIGHTBLUE
COL_LIGHTGREEN, // COL_LIGHTGREEN
COL_LIGHTCYAN, // COL_LIGHTCYAN
COL_LIGHTRED, // COL_LIGHTRED
COL_LIGHTMAGENTA, // COL_LIGHTMAGENTA
COL_YELLOW, // COL_YELLOW
COL_WHITE, // COL_WHITE
COL_WHITE, // COL_MENUBAR
COL_BLACK, // COL_MENUBARTEXT
COL_WHITE, // COL_POPUPMENU
COL_BLACK, // COL_POPUPMENUTEXT
COL_BLACK, // COL_WINDOWTEXT
COL_WHITE, // COL_WINDOWWORKSPACE
COL_BLACK, // COL_HIGHLIGHT
COL_WHITE, // COL_HIGHLIGHTTEXT
COL_BLACK, // COL_3DTEXT
COL_LIGHTGRAY, // COL_3DFACE
COL_WHITE, // COL_3DLIGHT
COL_GRAY, // COL_3DSHADOW
COL_LIGHTGRAY, // COL_SCROLLBAR
COL_WHITE, // COL_FIELD
COL_BLACK // COL_FIELDTEXT
};
if ( nColorName < (sizeof( aColAry )/sizeof(ColorData)) )
rColor.mnColor = aColAry[nColorName];
else
rColor.mnColor = COL_BLACK;
}
return rIStream;
}
void Color::ApplyTintOrShade(sal_Int16 n100thPercent)
{
if (n100thPercent == 0)
return;
basegfx::BColor aBColor = basegfx::tools::rgb2hsl(getBColor());
double fFactor = 1.0 - (std::abs(double(n100thPercent)) / 10000.0);
double fResult;
if (n100thPercent > 0) // tint
{
fResult = aBColor.getBlue() * fFactor + (1.0 - fFactor);
}
else // shade
{
fResult = aBColor.getBlue() * fFactor;
}
aBColor.setBlue(fResult);
aBColor = basegfx::tools::hsl2rgb(aBColor);
SetRed(sal_uInt8(( aBColor.getRed() * 255.0) + 0.5));
SetGreen(sal_uInt8((aBColor.getGreen() * 255.0) + 0.5));
SetBlue(sal_uInt8(( aBColor.getBlue() * 255.0) + 0.5));
}
SvStream& WriteColor( SvStream& rOStream, const Color& rColor )
{
sal_uInt16 nColorName = COL_NAME_USER;
sal_uInt16 nRed = rColor.GetRed();
sal_uInt16 nGreen = rColor.GetGreen();
sal_uInt16 nBlue = rColor.GetBlue();
nRed = (nRed<<8) + nRed;
nGreen = (nGreen<<8) + nGreen;
nBlue = (nBlue<<8) + nBlue;
rOStream.WriteUInt16( nColorName );
rOStream.WriteUInt16( nRed );
rOStream.WriteUInt16( nGreen );
rOStream.WriteUInt16( nBlue );
return rOStream;
}
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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