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/****************************************************************************
**
** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: http://www.qt-project.org/
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** GNU Lesser General Public License Usage
** 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.
**
** 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.
**
** Other Usage
** Alternatively, this file may be used in accordance with the terms and
** conditions contained in a signed written agreement between you and Nokia.
**
**
**
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGLCOLORMAP_H
#define QGLCOLORMAP_H
#include <QtGui/qcolor.h>
#include <QtCore/qvector.h>
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(OpenGL)
class Q_OPENGL_EXPORT QGLColormap
{
public:
QGLColormap();
QGLColormap(const QGLColormap &);
~QGLColormap();
QGLColormap &operator=(const QGLColormap &);
bool isEmpty() const;
int size() const;
void detach();
void setEntries(int count, const QRgb * colors, int base = 0);
void setEntry(int idx, QRgb color);
void setEntry(int idx, const QColor & color);
QRgb entryRgb(int idx) const;
QColor entryColor(int idx) const;
int find(QRgb color) const;
int findNearest(QRgb color) const;
protected:
Qt::HANDLE handle() { return d ? d->cmapHandle : 0; }
void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; }
private:
struct QGLColormapData {
QBasicAtomicInt ref;
QVector<QRgb> *cells;
Qt::HANDLE cmapHandle;
};
QGLColormapData *d;
static struct QGLColormapData shared_null;
static void cleanup(QGLColormapData *x);
void detach_helper();
friend class QGLWidget;
friend class QGLWidgetPrivate;
};
inline void QGLColormap::detach()
{
if (d->ref.load() != 1)
detach_helper();
}
QT_END_NAMESPACE
QT_END_HEADER
#endif // QGLCOLORMAP_H
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