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/****************************************************************************
**
** Copyright (C) 2017 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of the plugins 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 QSHAREDIMAGELOADER_H
#define QSHAREDIMAGELOADER_H

#include <QImage>
#include <QVariant>
#include <QLoggingCategory>
#include <qqml.h>

QT_BEGIN_NAMESPACE

Q_DECLARE_LOGGING_CATEGORY(lcSharedImage);

class QSharedImageLoaderPrivate;

class QSharedImageLoader : public QObject
{
    Q_OBJECT
    Q_DECLARE_PRIVATE(QSharedImageLoader)

    // We need to provide some type, in order to mention the 1.0 version.
    QML_ANONYMOUS
    QML_ADDED_IN_VERSION(1, 0)

public:
    typedef QVector<QVariant> ImageParameters;

    QSharedImageLoader(QObject *parent = nullptr);
    ~QSharedImageLoader();

    QImage load(const QString &path, ImageParameters *params = nullptr);

protected:
    virtual QImage loadFile(const QString &path, ImageParameters *params);
    virtual QString key(const QString &path, ImageParameters *params);

private:
    Q_DISABLE_COPY(QSharedImageLoader)
};

QT_END_NAMESPACE

#endif // QSHAREDIMAGELOADER_H