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/****************************************************************************
**
** Copyright (C) 2021 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.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qquickimagepreviewprovider_p.h"
#include <QtCore/qmutex.h>
#include <QtCore/qdebug.h>
QT_BEGIN_NAMESPACE
struct QQuickImagePreviewProviderPrivate
{
QString id;
QImage image;
QMutex mutex;
};
Q_GLOBAL_STATIC(QQuickImagePreviewProviderPrivate, priv)
QQuickImagePreviewProvider::QQuickImagePreviewProvider()
: QQuickImageProvider(QQuickImageProvider::Image)
{
}
QQuickImagePreviewProvider::~QQuickImagePreviewProvider()
{
QQuickImagePreviewProviderPrivate *d = priv();
QMutexLocker lock(&d->mutex);
d->id.clear();
d->image = QImage();
}
QImage QQuickImagePreviewProvider::requestImage(const QString &id, QSize *size, const QSize& requestedSize)
{
QQuickImagePreviewProviderPrivate *d = priv();
QMutexLocker lock(&d->mutex);
if (d->id != id)
return QImage();
QImage res = d->image;
if (!requestedSize.isEmpty())
res = res.scaled(requestedSize, Qt::KeepAspectRatio, Qt::SmoothTransformation);
if (size)
*size = res.size();
return res;
}
void QQuickImagePreviewProvider::registerPreview(const QString &id, const QImage &preview)
{
//only the last preview is kept
QQuickImagePreviewProviderPrivate *d = priv();
QMutexLocker lock(&d->mutex);
d->id = id;
d->image = preview;
}
QT_END_NAMESPACE
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