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/* Keramik Style for KDE3, color utility routines..
Copyright (c) 2002 Malte Starostik <malte@kde.org>
(c) 2002 Maksim Orlovich <mo002j@mail.rochester.edu>
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public License
along with this library; see the file COPYING.LIB. If not, write to
the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.
*/
// $Id$
#include <tqcolor.h>
#include "colorutil.h"
namespace Keramik
{
TQColor ColorUtil::lighten(TQColor in, int factor)
{
if (factor > 100)
{
int h, s, v;
in.hsv(&h, &s, &v);
float mShare = v/230.0;
if (mShare > 1) mShare = 1;
mShare *= mShare;
int diff = factor - 100;
int hd = int(mShare*diff);
int delta = int((diff - hd)*7.55);
TQColor wrk = in.light(100+hd);
int r = wrk.red();
int g = wrk.green();
int b = wrk.blue();
r+=delta;
g+=delta;
b+=delta;
if (r>255) r=255;
if (g>255) g=255;
if (b>255) b=255;
return TQColor(r,g,b);
}
return in;
}
}
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