qvideooutputorientationhandler.cpp

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// Copyright (C) 2016 Research In Motion
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qvideooutputorientationhandler_p.h"
 
#include <QGuiApplication>
#include <QScreen>
 
QT_BEGIN_NAMESPACE
 
bool QVideoOutputOrientationHandler::m_isRecording = false;
 
QVideoOutputOrientationHandler::QVideoOutputOrientationHandler(QObject *parent)
    : QObject(parent)
    , m_currentOrientation(0)
{
    QScreen *screen = QGuiApplication::primaryScreen();
    if (!screen)
        return;
 
    connect(screen, &QScreen::orientationChanged, this,
            &QVideoOutputOrientationHandler::screenOrientationChanged);
 
    screenOrientationChanged(screen->orientation());
}
 
int QVideoOutputOrientationHandler::currentOrientation() const
{
    return m_currentOrientation;
}
 
void QVideoOutputOrientationHandler::screenOrientationChanged(Qt::ScreenOrientation orientation)
{
    if (m_isRecording)
        return;
 
    const QScreen *screen = QGuiApplication::primaryScreen();
    if (!screen)
        return;
 
    const int angle = (360 - screen->angleBetween(screen->nativeOrientation(), orientation)) % 360;
 
    if (angle == m_currentOrientation)
        return;
 
    m_currentOrientation = angle;
    Q_EMIT orientationChanged(m_currentOrientation);
}
 
QT_END_NAMESPACE
 
#include "moc_qvideooutputorientationhandler_p.cpp"