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 QtGui 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 QPIXMAPCACHE_H
41#define QPIXMAPCACHE_H
42
43#include <QtGui/qtguiglobal.h>
44#include <QtGui/qpixmap.h>
45
46QT_BEGIN_NAMESPACE
47
48
49class Q_GUI_EXPORT QPixmapCache
50{
51public:
52 class KeyData;
53 class Q_GUI_EXPORT Key
54 {
55 public:
56 Key();
57 Key(const Key &other);
58 Key(Key &&other) noexcept : d(other.d) { other.d = nullptr; }
59 Key &operator =(Key &&other) noexcept { swap(other); return *this; }
60 ~Key();
61 bool operator ==(const Key &key) const;
62 inline bool operator !=(const Key &key) const
63 { return !operator==(key); }
64 Key &operator =(const Key &other);
65
66 void swap(Key &other) noexcept { qSwap(d, other.d); }
67 bool isValid() const noexcept;
68
69 private:
70 KeyData *d;
71 friend class QPMCache;
72 friend class QPixmapCache;
73 };
74
75 static int cacheLimit();
76 static void setCacheLimit(int);
77 static bool find(const QString &key, QPixmap *pixmap);
78 static bool find(const Key &key, QPixmap *pixmap);
79 static bool insert(const QString &key, const QPixmap &pixmap);
80 static Key insert(const QPixmap &pixmap);
81 static bool replace(const Key &key, const QPixmap &pixmap);
82 static void remove(const QString &key);
83 static void remove(const Key &key);
84 static void clear();
85
86#ifdef Q_TEST_QPIXMAPCACHE
87 static void flushDetachedPixmaps();
88 static int totalUsed();
89#endif
90};
91Q_DECLARE_SHARED(QPixmapCache::Key)
92
93QT_END_NAMESPACE
94
95#endif // QPIXMAPCACHE_H
96