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kcolorutils.h

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00001 /* This file is part of the KDE project
00002  * Copyright (C) 2007 Matthew Woehlke <mw_triad@users.sourceforge.net>
00003  * Copyright (C) 2007 Thomas Zander <zander@kde.org>
00004  * Copyright (C) 2007 Zack Rusin <zack@kde.org>
00005  *
00006  * This library is free software; you can redistribute it and/or
00007  * modify it under the terms of the GNU Library General Public
00008  * License as published by the Free Software Foundation; either
00009  * version 2 of the License, or (at your option) any later version.
00010  *
00011  * This library is distributed in the hope that it will be useful,
00012  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00013  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014  * Library General Public License for more details.
00015  *
00016  * You should have received a copy of the GNU Library General Public License
00017  * along with this library; see the file COPYING.LIB.  If not, write to
00018  * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
00019  * Boston, MA 02110-1301, USA.
00020  */
00021 
00022 #ifndef KCOLORUTILS_H
00023 #define KCOLORUTILS_H
00024 
00025 #include <kdeui_export.h>
00026 #include <QtGui/QPainter>
00027 
00028 class QColor;
00029 
00033 namespace KColorUtils {
00044     KDEUI_EXPORT qreal luma(const QColor&);
00045 
00058     KDEUI_EXPORT qreal contrastRatio(const QColor&, const QColor&);
00059 
00075     KDEUI_EXPORT QColor lighten(const QColor&, qreal amount = 0.5, qreal chromaInverseGain = 1.0);
00076 
00092     KDEUI_EXPORT QColor darken(const QColor&, qreal amount = 0.5, qreal chromaGain = 1.0);
00093 
00106     KDEUI_EXPORT QColor shade(const QColor&, qreal lumaAmount, qreal chromaAmount = 0.0);
00107 
00120     KDEUI_EXPORT QColor tint(const QColor &base, const QColor &color, qreal amount = 0.3);
00121 
00133     KDEUI_EXPORT QColor mix(const QColor &c1, const QColor &c2,
00134                             qreal bias = 0.5);
00135 
00148     KDEUI_EXPORT QColor overlayColors(const QColor &base, const QColor &paint,
00149                                       QPainter::CompositionMode comp = QPainter::CompositionMode_SourceOver);
00150 
00151 }
00152 
00153 #endif // KCOLORUTILS_H
00154 // kate: space-indent on; indent-width 4; replace-tabs on; auto-insert-doxygen on;

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