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 QtWidgets 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 QCOLORMAP_H
41#define QCOLORMAP_H
42
43#include <QtWidgets/qtwidgetsglobal.h>
44#include <QtCore/qatomic.h>
45#include <QtGui/qrgb.h>
46#include <QtCore/qvector.h>
47#include <QtGui/qwindowdefs.h>
48
49QT_BEGIN_NAMESPACE
50
51
52class QColor;
53class QColormapPrivate;
54
55class Q_WIDGETS_EXPORT QColormap
56{
57public:
58 enum Mode { Direct, Indexed, Gray };
59
60 static void initialize();
61 static void cleanup();
62
63 static QColormap instance(int screen = -1);
64
65 QColormap(const QColormap &colormap);
66 ~QColormap();
67
68 QColormap &operator=(const QColormap &colormap);
69
70 Mode mode() const;
71
72 int depth() const;
73 int size() const;
74
75 uint pixel(const QColor &color) const;
76 const QColor colorAt(uint pixel) const;
77
78 const QVector<QColor> colormap() const;
79
80private:
81 QColormap();
82 QColormapPrivate *d;
83};
84
85QT_END_NAMESPACE
86
87#endif // QCOLORMAP_H
88

source code of qtbase/src/widgets/util/qcolormap.h