| /**************************************************************************** |
| ** |
| ** Copyright (C) 2015 The Qt Company Ltd. |
| ** Contact: http://www.qt.io/licensing/ |
| ** |
| ** This file is part of the QtOpenGL module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL21$ |
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| ****************************************************************************/ |
| |
| #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 : 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 |
| |
| #endif // QGLCOLORMAP_H |