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/****************************************************************************
**
** Copyright (C) 2015 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: http://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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 http://www.qt.io/terms-conditions. For further
** information use the contact form at http://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.LGPLv3 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.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 later as published by the Free
** Software Foundation and appearing in the file LICENSE.GPL included in
** the packaging of this file. Please review the following information to
** ensure the GNU General Public License version 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "qwinrtimageencodercontrol.h"
QT_BEGIN_NAMESPACE
class QWinRTImageEncoderControlPrivate
{
public:
QList<QSize> supportedResolutions;
QImageEncoderSettings imageEncoderSetting;
};
QWinRTImageEncoderControl::QWinRTImageEncoderControl(QObject *parent)
: QImageEncoderControl(parent), d_ptr(new QWinRTImageEncoderControlPrivate)
{
}
QStringList QWinRTImageEncoderControl::supportedImageCodecs() const
{
return QStringList() << QStringLiteral("jpeg");
}
QString QWinRTImageEncoderControl::imageCodecDescription(const QString &codecName) const
{
if (codecName == QStringLiteral("jpeg"))
return tr("JPEG image");
return QString();
}
QList<QSize> QWinRTImageEncoderControl::supportedResolutions(const QImageEncoderSettings &settings, bool *continuous) const
{
Q_UNUSED(settings);
Q_D(const QWinRTImageEncoderControl);
if (continuous)
*continuous = false;
return d->supportedResolutions;
}
QImageEncoderSettings QWinRTImageEncoderControl::imageSettings() const
{
Q_D(const QWinRTImageEncoderControl);
return d->imageEncoderSetting;
}
void QWinRTImageEncoderControl::setImageSettings(const QImageEncoderSettings &settings)
{
Q_D(QWinRTImageEncoderControl);
if (d->imageEncoderSetting == settings)
return;
d->imageEncoderSetting = settings;
applySettings();
}
void QWinRTImageEncoderControl::setSupportedResolutionsList(const QList<QSize> resolution)
{
Q_D(QWinRTImageEncoderControl);
d->supportedResolutions = resolution;
applySettings();
}
void QWinRTImageEncoderControl::applySettings()
{
Q_D(QWinRTImageEncoderControl);
if (d->imageEncoderSetting.codec().isEmpty())
d->imageEncoderSetting.setCodec(QStringLiteral("jpeg"));
QSize requestResolution = d->imageEncoderSetting.resolution();
if (d->supportedResolutions.isEmpty() || d->supportedResolutions.contains(requestResolution))
return;
// Find closest resolution from the list
const int pixelCount = requestResolution.width() * requestResolution.height();
int minimumGap = std::numeric_limits<int>::max();
foreach (const QSize &size, d->supportedResolutions) {
int gap = qAbs(pixelCount - size.width() * size.height());
if (gap < minimumGap) {
minimumGap = gap;
requestResolution = size;
if (gap == 0)
break;
}
}
d->imageEncoderSetting.setResolution(requestResolution);
}
QT_END_NAMESPACE
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