Support device orientation in harmattan

Task-number: QTBUG-14137
Reviewed-by: Aaron Kennedy
(cherry picked from commit f9a8c4ec598a0070b9d2d861efe5ee69d5045a1f)

2 files changed, 166 insertions, 0 deletions

diff --git a/tools/qml/deviceorientation_harmattan.cpp b/tools/qml/deviceorientation_harmattan.cpp
new file mode 100644
index 0000000000..22f9f4c51f
--- /dev/null
+++ b/tools/qml/deviceorientation_harmattan.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the Technology Preview License Agreement accompanying
+** this package.
+**
+** 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, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
+**
+**
+**
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "deviceorientation.h"
+#include <QtDBus>
+#include <QDebug>
+
+#define ORIENTATION_SERVICE "com.nokia.SensorService"
+#define ORIENTATION_PATH "/org/maemo/contextkit/Screen/TopEdge"
+#define CONTEXT_INTERFACE "org.maemo.contextkit.Property"
+#define CONTEXT_CHANGED "ValueChanged"
+#define CONTEXT_SUBSCRIBE "Subscribe"
+#define CONTEXT_UNSUBSCRIBE "Unsubscribe"
+#define CONTEXT_GET "Get"
+
+
+class HarmattanOrientation : public DeviceOrientation
+{
+    Q_OBJECT
+public:
+    HarmattanOrientation()
+        : o(UnknownOrientation), sensorEnabled(false)
+    {
+        resumeListening();
+        // connect to the orientation change signal
+        bool ok = QDBusConnection::systemBus().connect(ORIENTATION_SERVICE, ORIENTATION_PATH,
+                CONTEXT_INTERFACE,
+                CONTEXT_CHANGED,
+                this,
+                SLOT(deviceOrientationChanged(QList<QVariant>,quint64)));
+//        qDebug() << "connection OK" << ok;
+        QDBusMessage reply = QDBusConnection::systemBus().call(
+                QDBusMessage::createMethodCall(ORIENTATION_SERVICE, ORIENTATION_PATH,
+                                               CONTEXT_INTERFACE, CONTEXT_GET));
+        if (reply.type() != QDBusMessage::ErrorMessage) {
+            QList<QVariant> args;
+            qvariant_cast<QDBusArgument>(reply.arguments().at(0)) >> args;
+            deviceOrientationChanged(args, 0);
+        }
+    }
+
+    ~HarmattanOrientation()
+    {
+        // unsubscribe from the orientation sensor
+        if (sensorEnabled)
+            QDBusConnection::systemBus().call(
+                QDBusMessage::createMethodCall(ORIENTATION_SERVICE, ORIENTATION_PATH,
+                                               CONTEXT_INTERFACE, CONTEXT_UNSUBSCRIBE));
+    }
+
+    inline Orientation orientation() const
+    {
+        return o;
+    }
+
+    void setOrientation(Orientation)
+    {
+    }
+
+    void pauseListening() {
+        if (sensorEnabled) {
+            // unsubscribe from the orientation sensor
+            QDBusConnection::systemBus().call(
+                    QDBusMessage::createMethodCall(ORIENTATION_SERVICE, ORIENTATION_PATH,
+                                                   CONTEXT_INTERFACE, CONTEXT_UNSUBSCRIBE));
+            sensorEnabled = false;
+        }
+    }
+
+    void resumeListening() {
+        if (!sensorEnabled) {
+            // subscribe to the orientation sensor
+            QDBusMessage reply = QDBusConnection::systemBus().call(
+                    QDBusMessage::createMethodCall(ORIENTATION_SERVICE, ORIENTATION_PATH,
+                                                   CONTEXT_INTERFACE, CONTEXT_SUBSCRIBE));
+
+            if (reply.type() == QDBusMessage::ErrorMessage) {
+                qWarning("Unable to retrieve device orientation: %s", qPrintable(reply.errorMessage()));
+            } else {
+                sensorEnabled = true;
+            }
+        }
+    }
+
+private Q_SLOTS:
+    void deviceOrientationChanged(QList<QVariant> args,quint64)
+    {
+        if (args.count() == 0)
+            return;
+        Orientation newOrientation = toOrientation(args.at(0).toString());
+        if (newOrientation != o) {
+            o = newOrientation;
+            emit orientationChanged();
+        }
+//        qDebug() << "orientation" << args.at(0).toString();
+    }
+
+private:
+    static Orientation toOrientation(const QString &nativeOrientation)
+    {
+        if (nativeOrientation == "top")
+            return Landscape;
+        else if (nativeOrientation == "left")
+            return Portrait;
+        else if (nativeOrientation == "bottom")
+            return LandscapeInverted;
+        else if (nativeOrientation == "right")
+            return PortraitInverted;
+        return UnknownOrientation;
+    }
+
+private:
+    Orientation o;
+    bool sensorEnabled;
+};
+
+DeviceOrientation* DeviceOrientation::instance()
+{
+    static HarmattanOrientation *o = new HarmattanOrientation;
+    return o;
+}
+
+#include "deviceorientation_harmattan.moc"
diff --git a/tools/qml/qml.pri b/tools/qml/qml.pri
index e5b2c7fb32..5db7678081 100644
--- a/tools/qml/qml.pri
+++ b/tools/qml/qml.pri
@@ -29,6 +29,11 @@ symbian:!contains(S60_VERSION, 3.1):!contains(S60_VERSION, 3.2) {
     SOURCES += $$PWD/deviceorientation_maemo5.cpp
     FORMS = $$PWD/recopts_maemo5.ui \
             $$PWD/proxysettings_maemo5.ui
+} else:linux-g++-maemo {
+    QT += dbus
+    SOURCES += $$PWD/deviceorientation_harmattan.cpp
+    FORMS = $$PWD/recopts.ui \
+            $$PWD/proxysettings.ui
 } else {
     SOURCES += $$PWD/deviceorientation.cpp
     FORMS = $$PWD/recopts.ui \