1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtOpenGL module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QGLCOLORMAP_H 41 #define QGLCOLORMAP_H 42 43 #include <QtGui/qcolor.h> 44 #include <QtCore/qvector.h> 45 #include <QtOpenGL/qtopenglglobal.h> 46 47 QT_BEGIN_NAMESPACE 48 49 50 class Q_OPENGL_EXPORT QGLColormap 51 { 52 public: 53 QGLColormap(); 54 QGLColormap(const QGLColormap &); 55 ~QGLColormap(); 56 57 QGLColormap &operator=(const QGLColormap &); 58 59 bool isEmpty() const; 60 int size() const; 61 void detach(); 62 63 void setEntries(int count, const QRgb * colors, int base = 0); 64 void setEntry(int idx, QRgb color); 65 void setEntry(int idx, const QColor & color); 66 QRgb entryRgb(int idx) const; 67 QColor entryColor(int idx) const; 68 int find(QRgb color) const; 69 int findNearest(QRgb color) const; 70 71 protected: handle()72 Qt::HANDLE handle() { return d ? d->cmapHandle : nullptr; } setHandle(Qt::HANDLE ahandle)73 void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; } 74 75 private: 76 struct QGLColormapData { 77 QBasicAtomicInt ref; 78 QVector<QRgb> *cells; 79 Qt::HANDLE cmapHandle; 80 }; 81 82 QGLColormapData *d; 83 static struct QGLColormapData shared_null; 84 static void cleanup(QGLColormapData *x); 85 void detach_helper(); 86 87 friend class QGLWidget; 88 friend class QGLWidgetPrivate; 89 }; 90 detach()91inline void QGLColormap::detach() 92 { 93 if (d->ref.loadRelaxed() != 1) 94 detach_helper(); 95 } 96 97 QT_END_NAMESPACE 98 99 #endif // QGLCOLORMAP_H 100