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# qglcolormap.h

Go to the documentation of this file.

    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtOpenGL module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    00012 ** accordance with the Qt Commercial License Agreement provided with the
    00013 ** Software or, alternatively, in accordance with the terms contained in
    00014 ** a written agreement between you and Nokia.
    00015 **
    00016 ** GNU Lesser General Public License Usage
    00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QGLCOLORMAP_H
    00043 #define QGLCOLORMAP_H
    00044
    00045 #include <QtGui/qcolor.h>
    00046 #include <QtCore/qvector.h>
    00047
    00048 QT_BEGIN_HEADER
    00049
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(OpenGL)
    00053
    00054 class Q_OPENGL_EXPORT QGLColormap
    00055 {
    00056 public:
    00057     QGLColormap();
    00058     QGLColormap(const QGLColormap &);
    00059     ~QGLColormap();
    00060
    00061     QGLColormap &operator=(const QGLColormap &);
    00062
    00063     bool   isEmpty() const;
    00064     int    size() const;
    00065     void   detach();
    00066
    00067     void   setEntries(int count, const QRgb * colors, int base = 0);
    00068     void   setEntry(int idx, QRgb color);
    00069     void   setEntry(int idx, const QColor & color);
    00070     QRgb   entryRgb(int idx) const;
    00071     QColor entryColor(int idx) const;
    00072     int    find(QRgb color) const;
    00073     int    findNearest(QRgb color) const;
    00074
    00075 protected:
    00076     Qt::HANDLE handle() { return d ? d->cmapHandle : 0; }
    00077     void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; }
    00078
    00079 private:
    00080     struct QGLColormapData {
    00081         QBasicAtomicInt ref;
    00082         QVector<QRgb> *cells;
    00083         Qt::HANDLE cmapHandle;
    00084     };
    00085
    00086     QGLColormapData *d;
    00087     static struct QGLColormapData shared_null;
    00088     static void cleanup(QGLColormapData *x);
    00089     void detach_helper();
    00090
    00091     friend class QGLWidget;
    00092     friend class QGLWidgetPrivate;
    00093 };
    00094
    00095 inline void QGLColormap::detach()
    00096 {
    00097     if (d->ref != 1)
    00098         detach_helper();
    00099 }
    00100
    00101 QT_END_NAMESPACE
    00102
    00103 QT_END_HEADER
    00104
    00105 #endif // QGLCOLORMAP_H