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66 lines
1.6 KiB
66 lines
1.6 KiB
15 years ago
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/* Keramik Style for KDE3, color utility routines..
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Copyright (c) 2002 Malte Starostik <malte@kde.org>
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(c) 2002 Maksim Orlovich <mo002j@mail.rochester.edu>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public License
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along with this library; see the file COPYING.LIB. If not, write to
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the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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Boston, MA 02110-1301, USA.
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*/
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// $Id$
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#include <qcolor.h>
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#include "colorutil.h"
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namespace Keramik
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{
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QColor ColorUtil::lighten(QColor in, int factor)
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{
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if (factor > 100)
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{
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int h, s, v;
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in.hsv(&h, &s, &v);
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float mShare = v/230.0;
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if (mShare > 1) mShare = 1;
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mShare *= mShare;
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int diff = factor - 100;
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int hd = int(mShare*diff);
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int delta = int((diff - hd)*7.55);
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QColor wrk = in.light(100+hd);
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int r = wrk.red();
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int g = wrk.green();
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int b = wrk.blue();
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r+=delta;
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g+=delta;
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b+=delta;
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if (r>255) r=255;
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if (g>255) g=255;
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if (b>255) b=255;
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return QColor(r,g,b);
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}
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return in;
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}
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}
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// vim: ts=4 sw=4 noet
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