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Diffstat (limited to 'src/gui/painting/qrgb.h')
-rw-r--r-- | src/gui/painting/qrgb.h | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/src/gui/painting/qrgb.h b/src/gui/painting/qrgb.h new file mode 100644 index 0000000..25218c6 --- /dev/null +++ b/src/gui/painting/qrgb.h @@ -0,0 +1,88 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (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 either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** 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 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@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 |