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/****************************************************************************
**
** Copyright (C) 2021 The Qt Company Ltd and/or its subsidiary(-ies).
** Contact: https://www.qt.io/licensing/
**
** This file is part of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:COMM$
**
** 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.
**
** $QT_END_LICENSE$
**
**
**
**
**
**
**
**
**
**
**
**
**
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**
**
**
****************************************************************************/
#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"));
if (d->supportedResolutions.isEmpty())
return;
QSize requestResolution = d->imageEncoderSetting.resolution();
if (!requestResolution.isValid()) {
d->imageEncoderSetting.setResolution(d->supportedResolutions.last());
return;
}
if (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();
for (const QSize &size : qAsConst(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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