1 files changed, 141 insertions, 0 deletions
diff --git a/src/plugins/android/src/mediacapture/qandroidcamerazoomcontrol.cpp b/src/plugins/android/src/mediacapture/qandroidcamerazoomcontrol.cpp
new file mode 100644
index 000000000..b7030e56b
--- /dev/null
+++ b/src/plugins/android/src/mediacapture/qandroidcamerazoomcontrol.cpp
@@ -0,0 +1,141 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** 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 "qandroidcamerazoomcontrol.h"
+
+#include "qandroidcamerasession.h"
+#include "jcamera.h"
+#include "qandroidmultimediautils.h"
+#include <qmath.h>
+
+QT_BEGIN_NAMESPACE
+
+QAndroidCameraZoomControl::QAndroidCameraZoomControl(QAndroidCameraSession *session)
+    : QCameraZoomControl()
+    , m_cameraSession(session)
+    , m_maximumZoom(1.0)
+    , m_requestedZoom(1.0)
+    , m_currentZoom(1.0)
+{
+    connect(m_cameraSession, SIGNAL(opened()),
+            this, SLOT(onCameraOpened()));
+}
+
+qreal QAndroidCameraZoomControl::maximumOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraZoomControl::maximumDigitalZoom() const
+{
+    return m_maximumZoom;
+}
+
+qreal QAndroidCameraZoomControl::requestedOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraZoomControl::requestedDigitalZoom() const
+{
+    return m_requestedZoom;
+}
+
+qreal QAndroidCameraZoomControl::currentOpticalZoom() const
+{
+    // Optical zoom not supported
+    return 1.0;
+}
+
+qreal QAndroidCameraZoomControl::currentDigitalZoom() const
+{
+    return m_currentZoom;
+}
+
+void QAndroidCameraZoomControl::zoomTo(qreal optical, qreal digital)
+{
+    Q_UNUSED(optical);
+
+    if (!m_cameraSession->camera() ||
+            qFuzzyCompare(m_requestedZoom, digital) ||
+            qFuzzyCompare(m_maximumZoom, qreal(1))) {
+        return;
+    }
+
+    m_requestedZoom = digital;
+    emit requestedDigitalZoomChanged(m_requestedZoom);
+
+    digital = qBound(qreal(1), digital, m_maximumZoom);
+    int validZoomIndex = qt_findClosestValue(m_zoomRatios, qRound(digital * 100));
+    qreal newZoom = m_zoomRatios.at(validZoomIndex) / qreal(100);
+    if (!qFuzzyCompare(m_currentZoom, newZoom)) {
+        m_cameraSession->camera()->setZoom(validZoomIndex);
+        m_currentZoom = newZoom;
+        emit currentDigitalZoomChanged(m_currentZoom);
+    }
+}
+
+void QAndroidCameraZoomControl::onCameraOpened()
+{
+    m_requestedZoom = 1.0;
+    m_currentZoom = 1.0;
+    emit requestedDigitalZoomChanged(m_requestedZoom);
+    emit currentDigitalZoomChanged(m_currentZoom);
+
+    if (m_cameraSession->camera()->isZoomSupported()) {
+        m_zoomRatios = m_cameraSession->camera()->getZoomRatios();
+        qreal maxZoom = m_zoomRatios.last() / qreal(100);
+        if (m_maximumZoom != maxZoom) {
+            m_maximumZoom = maxZoom;
+            emit maximumDigitalZoomChanged(m_maximumZoom);
+        }
+    } else {
+        m_zoomRatios.clear();
+        if (!qFuzzyCompare(m_maximumZoom, qreal(1))) {
+            m_maximumZoom = 1.0;
+            emit maximumDigitalZoomChanged(m_maximumZoom);
+        }
+    }
+}
+
+QT_END_NAMESPACE