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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtOpenGL module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QGLCOLORMAP_H
#define QGLCOLORMAP_H
#include <QtGui/qcolor.h>
#include <QtCore/qvector.h>
#include <QtOpenGL/qtopenglglobal.h>
QT_BEGIN_NAMESPACE
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 : nullptr; }
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
#endif // QGLCOLORMAP_H
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