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Diffstat (limited to 'src/plugins/qnx/camera/bbcamerazoomcontrol.cpp')
| -rw-r--r-- | src/plugins/qnx/camera/bbcamerazoomcontrol.cpp | 157 |
1 files changed, 157 insertions, 0 deletions
diff --git a/src/plugins/qnx/camera/bbcamerazoomcontrol.cpp b/src/plugins/qnx/camera/bbcamerazoomcontrol.cpp new file mode 100644 index 000000000..f73cf000a --- /dev/null +++ b/src/plugins/qnx/camera/bbcamerazoomcontrol.cpp @@ -0,0 +1,157 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Research In Motion +** Contact: http://www.qt-project.org/legal +** +** This file is part 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 Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Digia gives you certain additional +** rights. These rights are described in the Digia Qt LGPL Exception +** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 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 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ +#include "bbcamerazoomcontrol.h" + +#include "bbcamerasession.h" + +#include <QDebug> + +QT_BEGIN_NAMESPACE + +BbCameraZoomControl::BbCameraZoomControl(BbCameraSession *session, QObject *parent) + : QCameraZoomControl(parent) + , m_session(session) + , m_minimumZoomFactor(1.0) + , m_maximumZoomFactor(1.0) + , m_supportsSmoothZoom(false) + , m_requestedZoomFactor(1.0) +{ + connect(m_session, SIGNAL(statusChanged(QCamera::Status)), this, SLOT(statusChanged(QCamera::Status))); +} + +qreal BbCameraZoomControl::maximumOpticalZoom() const +{ + //TODO: optical zoom support not available in BB10 API yet + return 1.0; +} + +qreal BbCameraZoomControl::maximumDigitalZoom() const +{ + return m_maximumZoomFactor; +} + +qreal BbCameraZoomControl::requestedOpticalZoom() const +{ + //TODO: optical zoom support not available in BB10 API yet + return 1.0; +} + +qreal BbCameraZoomControl::requestedDigitalZoom() const +{ + return currentDigitalZoom(); +} + +qreal BbCameraZoomControl::currentOpticalZoom() const +{ + //TODO: optical zoom support not available in BB10 API yet + return 1.0; +} + +qreal BbCameraZoomControl::currentDigitalZoom() const +{ + if (m_session->status() != QCamera::ActiveStatus) + return 1.0; + + unsigned int zoomFactor = 0; + camera_error_t result = CAMERA_EOK; + + if (m_session->captureMode() & QCamera::CaptureStillImage) + result = camera_get_photovf_property(m_session->handle(), CAMERA_IMGPROP_ZOOMFACTOR, &zoomFactor); + else if (m_session->captureMode() & QCamera::CaptureVideo) + result = camera_get_videovf_property(m_session->handle(), CAMERA_IMGPROP_ZOOMFACTOR, &zoomFactor); + + if (result != CAMERA_EOK) + return 1.0; + + return zoomFactor; +} + +void BbCameraZoomControl::zoomTo(qreal optical, qreal digital) +{ + Q_UNUSED(optical) + + if (m_session->status() != QCamera::ActiveStatus) + return; + + const qreal actualZoom = qBound(m_minimumZoomFactor, digital, m_maximumZoomFactor); + + const camera_error_t result = camera_set_zoom(m_session->handle(), actualZoom, false); + + if (result != CAMERA_EOK) { + qWarning() << "Unable to change zoom factor:" << result; + return; + } + + if (m_requestedZoomFactor != digital) { + m_requestedZoomFactor = digital; + emit requestedDigitalZoomChanged(m_requestedZoomFactor); + } + + emit currentDigitalZoomChanged(actualZoom); +} + +void BbCameraZoomControl::statusChanged(QCamera::Status status) +{ + if (status == QCamera::ActiveStatus) { + // retrieve information about zoom limits + unsigned int maximumZoomLimit = 0; + unsigned int minimumZoomLimit = 0; + bool smoothZoom = false; + + const camera_error_t result = camera_get_zoom_limits(m_session->handle(), &maximumZoomLimit, &minimumZoomLimit, &smoothZoom); + if (result == CAMERA_EOK) { + const qreal oldMaximumZoomFactor = m_maximumZoomFactor; + m_maximumZoomFactor = maximumZoomLimit; + + if (oldMaximumZoomFactor != m_maximumZoomFactor) + emit maximumDigitalZoomChanged(m_maximumZoomFactor); + + m_minimumZoomFactor = minimumZoomLimit; + m_supportsSmoothZoom = smoothZoom; + } else { + m_maximumZoomFactor = 1.0; + m_minimumZoomFactor = 1.0; + m_supportsSmoothZoom = false; + } + } +} + +QT_END_NAMESPACE |