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 46 QT_BEGIN_NAMESPACE 47 48 49 class Q_GUI_EXPORT QPixmapCache 50 { 51 public: 52 class KeyData; 53 class Q_GUI_EXPORT Key 54 { 55 public: 56 Key(); 57 Key(const Key &other); Key(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 swap(Key & other)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 #if QT_DEPRECATED_SINCE(5, 13) 78 QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead") 79 static QPixmap *find(const QString &key); 80 QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead") 81 static bool find(const QString &key, QPixmap &pixmap); 82 #endif 83 static bool find(const QString &key, QPixmap *pixmap); 84 static bool find(const Key &key, QPixmap *pixmap); 85 static bool insert(const QString &key, const QPixmap &pixmap); 86 static Key insert(const QPixmap &pixmap); 87 static bool replace(const Key &key, const QPixmap &pixmap); 88 static void remove(const QString &key); 89 static void remove(const Key &key); 90 static void clear(); 91 92 #ifdef Q_TEST_QPIXMAPCACHE 93 static void flushDetachedPixmaps(); 94 static int totalUsed(); 95 #endif 96 }; 97 Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QPixmapCache::Key) 98 99 QT_END_NAMESPACE 100 101 #endif // QPIXMAPCACHE_H 102