/****************************************************************************

**

** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).

** All rights reserved.

** Contact: Nokia Corporation (qt-info@nokia.com)

**

** This file is part of the QtGui module of the Qt Toolkit.

**

** $QT_BEGIN_LICENSE:LGPL$

** No Commercial Usage

** This file contains pre-release code and may not be distributed.

** You may use this file in accordance with the terms and conditions

** contained in the Technology Preview License Agreement accompanying

** this package.

**

** GNU Lesser General Public License Usage

** Alternatively, this file may be used under the terms of the GNU Lesser

** General Public License version 2.1 as published by the Free Software

** Foundation and appearing in the file LICENSE.LGPL included in the

** packaging of this file.  Please review the following information to

** ensure the GNU Lesser General Public License version 2.1 requirements

** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.

**

** In addition, as a special exception, Nokia gives you certain additional

** rights.  These rights are described in the Nokia Qt LGPL Exception

** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.

**

** If you have questions regarding the use of this file, please contact

** Nokia at qt-info@nokia.com.

**

**

**

**

**

**

**

**

** $QT_END_LICENSE$

**

****************************************************************************/

#ifndef QRGB_H

#define QRGB_H

#include <QtCore/qglobal.h>

QT_BEGIN_HEADER

QT_BEGIN_NAMESPACE

QT_MODULE(Gui)

typedef unsigned int QRgb;                        // RGB triplet

const QRgb  RGB_MASK    = 0x00ffffff;                // masks RGB values

Q_GUI_EXPORT_INLINE int qRed(QRgb rgb)                // get red part of RGB

{ return ((rgb >> 16) & 0xff); }

Q_GUI_EXPORT_INLINE int qGreen(QRgb rgb)                // get green part of RGB

{ return ((rgb >> 8) & 0xff); }

Q_GUI_EXPORT_INLINE int qBlue(QRgb rgb)                // get blue part of RGB

{ return (rgb & 0xff); }

Q_GUI_EXPORT_INLINE int qAlpha(QRgb rgb)                // get alpha part of RGBA

{ return ((rgb >> 24) & 0xff); }

Q_GUI_EXPORT_INLINE QRgb qRgb(int r, int g, int b)// set RGB value

{ return (0xffu << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

Q_GUI_EXPORT_INLINE QRgb qRgba(int r, int g, int b, int a)// set RGBA value

{ return ((a & 0xff) << 24) | ((r & 0xff) << 16) | ((g & 0xff) << 8) | (b & 0xff); }

Q_GUI_EXPORT_INLINE int qGray(int r, int g, int b)// convert R,G,B to gray 0..255

{ return (r*11+g*16+b*5)/32; }

Q_GUI_EXPORT_INLINE int qGray(QRgb rgb)                // convert RGB to gray 0..255

{ return qGray(qRed(rgb), qGreen(rgb), qBlue(rgb)); }

Q_GUI_EXPORT_INLINE bool qIsGray(QRgb rgb)

{ return qRed(rgb) == qGreen(rgb) && qRed(rgb) == qBlue(rgb); }

QT_END_NAMESPACE

QT_END_HEADER

#endif // QRGB_H