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/****************************************************************************
**
** Copyright (C) 2016 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the QtGui module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial License Usage
** Licensees holding valid commercial Qt licenses may use this file in
** accordance with the commercial license agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and The Qt Company. For licensing terms
** and conditions see https://www.qt.io/terms-conditions. For further
** information use the contact form at https://www.qt.io/contact-us.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 3 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL3 included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 3 requirements
** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 2.0 or (at your option) the GNU General
** Public license version 3 or any later version approved by the KDE Free
** Qt Foundation. The licenses are as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file. Please review the following
** information to ensure the GNU General Public License requirements will
** be met: https://www.gnu.org/licenses/gpl-2.0.html and
** https://www.gnu.org/licenses/gpl-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#ifndef QPIXMAPCACHE_H
#define QPIXMAPCACHE_H

#include <QtGui/qtguiglobal.h>
#include <QtGui/qpixmap.h>

QT_BEGIN_NAMESPACE


class Q_GUI_EXPORT QPixmapCache
{
public:
    class KeyData;
    class Q_GUI_EXPORT Key
    {
    public:
        Key();
        Key(const Key &other);
#ifdef Q_COMPILER_RVALUE_REFS
        Key(Key &&other) Q_DECL_NOTHROW : d(other.d) { other.d = nullptr; }
        Key &operator =(Key &&other) Q_DECL_NOTHROW { swap(other); return *this; }
#endif
        ~Key();
        bool operator ==(const Key &key) const;
        inline bool operator !=(const Key &key) const
        { return !operator==(key); }
        Key &operator =(const Key &other);

        void swap(Key &other) Q_DECL_NOTHROW { qSwap(d, other.d); }
        bool isValid() const Q_DECL_NOTHROW;

    private:
        KeyData *d;
        friend class QPMCache;
        friend class QPixmapCache;
    };

    static int cacheLimit();
    static void setCacheLimit(int);
#if QT_DEPRECATED_SINCE(5, 13)
    QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead")
    static QPixmap *find(const QString &key);
    QT_DEPRECATED_X("Use bool find(const QString &, QPixmap *) instead")
    static bool find(const QString &key, QPixmap &pixmap);
#endif
    static bool find(const QString &key, QPixmap *pixmap);
    static bool find(const Key &key, QPixmap *pixmap);
    static bool insert(const QString &key, const QPixmap &pixmap);
    static Key insert(const QPixmap &pixmap);
    static bool replace(const Key &key, const QPixmap &pixmap);
    static void remove(const QString &key);
    static void remove(const Key &key);
    static void clear();

#ifdef Q_TEST_QPIXMAPCACHE
    static void flushDetachedPixmaps();
    static int totalUsed();
#endif
};
Q_DECLARE_SHARED_NOT_MOVABLE_UNTIL_QT6(QPixmapCache::Key)

QT_END_NAMESPACE

#endif // QPIXMAPCACHE_H