2732e23887
- Renamed LICENSE.LGPL to LICENSE.LGPLv21 - Added LICENSE.LGPLv3 & LICENSE.GPLv2 - Removed LICENSE.GPL Change-Id: Ied06887225df341064c12bcc14c259ae74116f2e Reviewed-by: Jani Heikkinen <jani.heikkinen@digia.com>
114 lines
3.3 KiB
C++
114 lines
3.3 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2014 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:LGPL21$
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** Commercial License Usage
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** Licensees holding valid commercial Qt licenses may use this file in
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** accordance with the commercial license agreement provided with the
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** Software or, alternatively, in accordance with the terms contained in
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** a written agreement between you and Digia. For licensing terms and
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** conditions see http://qt.digia.com/licensing. For further information
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** use the contact form at http://qt.digia.com/contact-us.
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**
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** GNU Lesser General Public License Usage
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** Alternatively, this file may be used under the terms of the GNU Lesser
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** General Public License version 2.1 or version 3 as published by the Free
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** Software Foundation and appearing in the file LICENSE.LGPLv21 and
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** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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** following information to ensure the GNU Lesser General Public License
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** requirements will be met: https://www.gnu.org/licenses/lgpl.html and
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** http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
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**
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** In addition, as a special exception, Digia gives you certain additional
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** rights. These rights are described in the Digia Qt LGPL Exception
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** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "camerabinzoom.h"
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#include "camerabinsession.h"
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#include <gst/interfaces/photography.h>
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#define ZOOM_PROPERTY "zoom"
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#define MAX_ZOOM_PROPERTY "max-zoom"
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QT_BEGIN_NAMESPACE
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CameraBinZoom::CameraBinZoom(CameraBinSession *session)
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: QCameraZoomControl(session)
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, m_session(session)
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, m_requestedOpticalZoom(1.0)
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, m_requestedDigitalZoom(1.0)
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{
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}
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CameraBinZoom::~CameraBinZoom()
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{
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}
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qreal CameraBinZoom::maximumOpticalZoom() const
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{
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return 1.0;
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}
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qreal CameraBinZoom::maximumDigitalZoom() const
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{
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gfloat zoomFactor = 1.0;
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g_object_get(GST_BIN(m_session->cameraBin()), MAX_ZOOM_PROPERTY, &zoomFactor, NULL);
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return zoomFactor;
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}
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qreal CameraBinZoom::requestedDigitalZoom() const
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{
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return m_requestedDigitalZoom;
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}
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qreal CameraBinZoom::requestedOpticalZoom() const
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{
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return m_requestedOpticalZoom;
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}
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qreal CameraBinZoom::currentOpticalZoom() const
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{
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return 1.0;
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}
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qreal CameraBinZoom::currentDigitalZoom() const
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{
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gfloat zoomFactor = 1.0;
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g_object_get(GST_BIN(m_session->cameraBin()), ZOOM_PROPERTY, &zoomFactor, NULL);
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return zoomFactor;
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}
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void CameraBinZoom::zoomTo(qreal optical, qreal digital)
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{
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qreal oldDigitalZoom = currentDigitalZoom();
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if (m_requestedDigitalZoom != digital) {
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m_requestedDigitalZoom = digital;
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emit requestedDigitalZoomChanged(digital);
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}
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if (m_requestedOpticalZoom != optical) {
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m_requestedOpticalZoom = optical;
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emit requestedOpticalZoomChanged(optical);
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}
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digital = qBound(qreal(1.0), digital, maximumDigitalZoom());
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g_object_set(GST_BIN(m_session->cameraBin()), ZOOM_PROPERTY, digital, NULL);
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qreal newDigitalZoom = currentDigitalZoom();
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if (!qFuzzyCompare(oldDigitalZoom, newDigitalZoom))
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emit currentDigitalZoomChanged(digital);
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}
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QT_END_NAMESPACE
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