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89 lines
3.3 KiB
89 lines
3.3 KiB
15 years ago
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/****************************************************************************
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**
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** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the QtGui module of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL$
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** Commercial Usage
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** Licensees holding valid Qt Commercial licenses may use this file in
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** accordance with the Qt Commercial License Agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Nokia.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 as published by the Free Software
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** Foundation and appearing in the file LICENSE.LGPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU Lesser General Public License version 2.1 requirements
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** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Nokia gives you certain additional
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** rights. These rights are described in the Nokia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** GNU General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU
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** General Public License version 3.0 as published by the Free Software
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** Foundation and appearing in the file LICENSE.GPL included in the
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** packaging of this file. Please review the following information to
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** ensure the GNU General Public License version 3.0 requirements will be
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** met: http://www.gnu.org/copyleft/gpl.html.
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**
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** If you have questions regarding the use of this file, please contact
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** Nokia at qt-info@nokia.com.
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#ifndef QRGB_H
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#define QRGB_H
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#include <QtCore/qglobal.h>
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QT_BEGIN_HEADER
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QT_BEGIN_NAMESPACE
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QT_MODULE(Gui)
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typedef unsigned int QRgb; // RGB triplet
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const QRgb RGB_MASK = 0x00ffffff; // masks RGB values
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Q_GUI_EXPORT_INLINE int qRed(QRgb rgb) // get red part of RGB
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{ return ((rgb >> 16) & 0xff); }
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Q_GUI_EXPORT_INLINE int qGreen(QRgb rgb) // get green part of RGB
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{ return ((rgb >> 8) & 0xff); }
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Q_GUI_EXPORT_INLINE int qBlue(QRgb rgb) // get blue part of RGB
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{ return (rgb & 0xff); }
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Q_GUI_EXPORT_INLINE int qAlpha(QRgb rgb) // get alpha part of RGBA
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{ return ((rgb >> 24) & 0xff); }
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Q_GUI_EXPORT_INLINE QRgb qRgb(int r, int g, int b)// set RGB value
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{ return (0xffu << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }
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Q_GUI_EXPORT_INLINE QRgb qRgba(int r, int g, int b, int a)// set RGBA value
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{ return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }
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Q_GUI_EXPORT_INLINE int qGray(int r, int g, int b)// convert R,G,B to gray 0..255
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{ return (r*11+g*16+b*5)/32; }
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Q_GUI_EXPORT_INLINE int qGray(QRgb rgb) // convert RGB to gray 0..255
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{ return qGray(qRed(rgb), qGreen(rgb), qBlue(rgb)); }
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Q_GUI_EXPORT_INLINE bool qIsGray(QRgb rgb)
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{ return qRed(rgb) == qGreen(rgb) && qRed(rgb) == qBlue(rgb); }
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QT_END_NAMESPACE
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QT_END_HEADER
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#endif // QRGB_H
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