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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
47QT_BEGIN_NAMESPACE
48
49
50class Q_OPENGL_EXPORT QGLColormap
51{
52public:
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
71protected:
72 Qt::HANDLE handle() { return d ? d->cmapHandle : nullptr; }
73 void setHandle(Qt::HANDLE ahandle) { d->cmapHandle = ahandle; }
74
75private:
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
91inline void QGLColormap::detach()
92{
93 if (d->ref.loadRelaxed() != 1)
94 detach_helper();
95}
96
97QT_END_NAMESPACE
98
99#endif // QGLCOLORMAP_H
100