[ChangeLog][QtSensors][QSensor] Add new sensor: lidsensor

Change-Id: I57123eed34ee4618f1cba643c2ce49c8c621a6cd
Reviewed-by: Lorn Potter <lorn.potter@canonical.com>

15 files changed, 796 insertions, 7 deletions

diff --git a/dist/changes-5.9.0 b/dist/changes-5.9.0
new file mode 100644
index 0000000..e536cd2
--- /dev/null
+++ b/dist/changes-5.9.0
@@ -0,0 +1,26 @@
+Qt 5.9 introduces many new features and improvements as well as bugfixes
+over the 5.8.x series. For more details, refer to the online documentation
+included in this distribution. The documentation is also available online:
+
+  http://doc.qt.io/qt-5/index.html
+
+The Qt version 5.9 series is binary compatible with the 5.8.x series.
+Applications compiled for 5.8 will continue to run with 5.9.
+
+Some of the changes listed in this file include issue tracking numbers
+corresponding to tasks in the Qt Bug Tracker:
+
+  https://bugreports.qt.io/
+
+Each of these identifiers can be entered in the bug tracker to obtain more
+information about a particular change.
+
+****************************************************************************
+*                           Library                                        *
+****************************************************************************
+
+QtSensors
+---------
+
+ - Added QLidSensor
+ - Added sensorfw backend for QLidSensor
diff --git a/src/imports/sensors/qmllidsensor.cpp b/src/imports/sensors/qmllidsensor.cpp
new file mode 100644
index 0000000..e6dfa4c
--- /dev/null
+++ b/src/imports/sensors/qmllidsensor.cpp
@@ -0,0 +1,149 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include "qmllidsensor.h"
+#include <QtSensors/QLidSensor>
+
+/*!
+    \qmltype LidSensor
+    \instantiates QmlLidSensor
+    \ingroup qml-sensors_type
+    \inqmlmodule QtSensors
+    \since QtSensors 5.9
+    \inherits Sensor
+    \brief The LidSensor element reports on whether a device is closed.
+
+    The LidSensor element reports on whether a device is closed.
+
+    This element wraps the QLidSensor class. Please see the documentation for
+    QLidSensor for details.
+
+    \sa LidReading
+*/
+
+QmlLidSensor::QmlLidSensor(QObject *parent)
+    : QmlSensor(parent)
+    , m_sensor(new QLidSensor(this))
+{
+}
+
+QmlLidSensor::~QmlLidSensor()
+{
+}
+
+QmlSensorReading *QmlLidSensor::createReading() const
+{
+    return new QmlLidReading(m_sensor);
+}
+
+QSensor *QmlLidSensor::sensor() const
+{
+    return m_sensor;
+}
+
+/*!
+    \qmltype LidReading
+    \instantiates QmlLidReading
+    \ingroup qml-sensors_reading
+    \inqmlmodule QtSensors
+    \since QtSensors 5.9
+    \inherits SensorReading
+    \brief The LidReading element holds the most recent LidSensor reading.
+
+    The LidReading element holds the most recent LidSensor reading.
+
+    This element wraps the QLidReading class. Please see the documentation for
+    QLidReading for details.
+
+    This element cannot be directly created.
+*/
+
+QmlLidReading::QmlLidReading(QLidSensor *sensor)
+    : QmlSensorReading(sensor)
+    , m_sensor(sensor)
+    , m_backClosed(false)
+    , m_frontClosed(true)
+{
+}
+
+QmlLidReading::~QmlLidReading()
+{
+}
+
+/*!
+    \qmlproperty qreal LidReading::backLidClosed
+    This property holds whether the back lid is closed.
+
+    Please see QLidReading::backLidClosed for information about this property.
+*/
+
+bool QmlLidReading::backLidChanged() const
+{
+    return m_backClosed;
+}
+
+/*!
+    \qmlproperty qreal LidReading::frontLidClosed
+    This property holds whether the front lid is closed.
+
+    Please see QLidReading::frontLidClosed for information about this property.
+*/
+
+bool QmlLidReading::frontLidClosed() const
+{
+    return m_frontClosed;
+}
+
+QSensorReading *QmlLidReading::reading() const
+{
+    return m_sensor->reading();
+}
+
+void QmlLidReading::readingUpdate()
+{
+    const bool backClosed = m_sensor->reading()->backLidClosed();
+    if (m_backClosed != backClosed) {
+        m_backClosed = backClosed;
+        Q_EMIT backLidChanged(m_backClosed);
+    }
+    const bool frontClosed = m_sensor->reading()->frontLidClosed();
+    if (m_frontClosed != frontClosed) {
+        m_frontClosed = frontClosed;
+        Q_EMIT frontLidChanged(m_frontClosed);
+    }
+}
diff --git a/src/imports/sensors/qmllidsensor.h b/src/imports/sensors/qmllidsensor.h
new file mode 100644
index 0000000..caa44ef
--- /dev/null
+++ b/src/imports/sensors/qmllidsensor.h
@@ -0,0 +1,88 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QMLLIDSENSOR_H
+#define QMLLIDSENSOR_H
+
+#include "qmlsensor.h"
+
+QT_BEGIN_NAMESPACE
+
+class QLidSensor;
+
+class QmlLidSensor : public QmlSensor
+{
+    Q_OBJECT
+public:
+    explicit QmlLidSensor(QObject *parent = 0);
+    ~QmlLidSensor();
+
+private:
+    QSensor *sensor() const Q_DECL_OVERRIDE;
+    QmlSensorReading *createReading() const Q_DECL_OVERRIDE;
+
+    QLidSensor *m_sensor;
+};
+
+class QmlLidReading : public QmlSensorReading
+{
+    Q_OBJECT
+    Q_PROPERTY(bool backLidChanged READ backLidChanged NOTIFY backLidChanged)
+    Q_PROPERTY(bool frontLidClosed READ frontLidClosed NOTIFY frontLidChanged)
+public:
+    explicit QmlLidReading(QLidSensor *sensor);
+    ~QmlLidReading();
+
+    bool backLidChanged() const;
+    bool frontLidClosed() const;
+
+Q_SIGNALS:
+    void backLidChanged(bool closed);
+    bool frontLidChanged(bool closed);
+
+private:
+    QSensorReading *reading() const Q_DECL_OVERRIDE;
+    void readingUpdate() Q_DECL_OVERRIDE;
+
+    QLidSensor *m_sensor;
+    bool m_backClosed;
+    bool m_frontClosed;
+};
+
+QT_END_NAMESPACE
+#endif
diff --git a/src/imports/sensors/sensors.cpp b/src/imports/sensors/sensors.cpp
index d1f5bb4..fa8c8e2 100644
--- a/src/imports/sensors/sensors.cpp
+++ b/src/imports/sensors/sensors.cpp
@@ -55,6 +55,7 @@
 #include <QtSensors/qgyroscope.h>
 #include <QtSensors/qirproximitysensor.h>
 #include <QtSensors/qtiltsensor.h>
+#include <QtSensors/qlidsensor.h>
 
 #include "qmlsensorglobal.h"
 #include "qmlsensor.h"
@@ -75,6 +76,7 @@
 #include "qmltapsensor.h"
 #include "qmltiltsensor.h"
 #include "qmlsensorgesture.h"
+#include "qmllidsensor.h"
 
 static void initResources()
 {
@@ -222,11 +224,14 @@ public:
 
         qmlRegisterType           <QmlSensorGesture            >(package, major, minor, "SensorGesture");
 
-        // Register the 5.7 interfaces
-        // No API changes, just reintroduce existing interfaces from 5.2
-        // Implicitly registers 5.3 - 5.6 too
         minor = 7;
         qmlRegisterType           <QmlAltimeter                >(package, major, minor, "Altimeter");
+        // Register the 5.9 interfaces
+        // No API changes, just reintroduce existing interfaces from 5.2
+        // Implicitly registers 5.3 - 5.7 too
+        minor = 9;
+        qmlRegisterType           <QmlLidSensor                >(package, major, minor, "LidSensor");
+        qmlRegisterUncreatableType<QmlLidReading               >(package, major, minor, "LidReading",          QLatin1String("Cannot create LidReading"));
     }
 };
 
diff --git a/src/imports/sensors/sensors.pro b/src/imports/sensors/sensors.pro
index 60cb8b7..d627916 100644
--- a/src/imports/sensors/sensors.pro
+++ b/src/imports/sensors/sensors.pro
@@ -22,7 +22,8 @@ HEADERS += \
     qmlsensorglobal.h \
     qmltiltsensor.h \
     qmlsensorgesture.h \
-    qmlhumiditysensor.h
+    qmlhumiditysensor.h \
+    qmllidsensor.h
 
 SOURCES += sensors.cpp \
     qmlsensor.cpp \
@@ -46,7 +47,8 @@ SOURCES += sensors.cpp \
     qmlsensorglobal.cpp \
     qmltiltsensor.cpp \
     qmlsensorgesture.cpp \
-    qmlhumiditysensor.cpp
+    qmlhumiditysensor.cpp \
+    qmllidsensor.cpp
 
 load(qml_plugin)
 
diff --git a/src/plugins/sensors/sensorfw/Sensors.conf b/src/plugins/sensors/sensorfw/Sensors.conf
index 31d1aff..b3db5ff 100644
--- a/src/plugins/sensors/sensorfw/Sensors.conf
+++ b/src/plugins/sensors/sensorfw/Sensors.conf
@@ -10,3 +10,4 @@ QTapSensor=sensorfw.tapsensor
 QLightSensor=sensorfw.lightsensor
 QIRProximitySensor=sensorfw.irproximitysensor
 QGyroscope=sensorfw.gyroscope
+QLidSensor=sensorfw.lidsensor
diff --git a/src/plugins/sensors/sensorfw/main.cpp b/src/plugins/sensors/sensorfw/main.cpp
index 7d4a883..bc1246a 100644
--- a/src/plugins/sensors/sensorfw/main.cpp
+++ b/src/plugins/sensors/sensorfw/main.cpp
@@ -48,6 +48,7 @@
 #include "sensorfwtapsensor.h"
 #include "sensorfwgyroscope.h"
 #include "sensorfwlightsensor.h"
+#include "sensorfwlidsensor.h"
 
 #include <QtSensors/qsensorplugin.h>
 #include <QtSensors/qsensorbackend.h>
@@ -97,6 +98,8 @@ public:
             return new SensorfwTapSensor(sensor);
         if (sensor->identifier() == SensorfwGyroscope::id)
             return new SensorfwGyroscope(sensor);
+        if (sensor->identifier() == SensorfwLidSensor::id)
+            return new SensorfwLidSensor(sensor);
         if (sensor->identifier() == SensorfwLightSensor::id)
             return new SensorfwLightSensor(sensor);
         if (sensor->identifier() == SensorfwIrProximitySensor::id)
diff --git a/src/plugins/sensors/sensorfw/sensorfw.pri b/src/plugins/sensors/sensorfw/sensorfw.pri
index 31d7254..ce8e3ab 100644
--- a/src/plugins/sensors/sensorfw/sensorfw.pri
+++ b/src/plugins/sensors/sensorfw/sensorfw.pri
@@ -9,7 +9,8 @@ HEADERS += sensorfwsensorbase.h \
     sensorfwrotationsensor.h \
     sensorfwtapsensor.h    \
     sensorfwlightsensor.h  \
-    sensorfwirproximitysensor.h
+    sensorfwirproximitysensor.h \
+    sensorfwlidsensor.h
 
 SOURCES += sensorfwsensorbase.cpp \
     sensorfwaccelerometer.cpp \
@@ -23,4 +24,5 @@ SOURCES += sensorfwsensorbase.cpp \
     sensorfwrotationsensor.cpp \
     sensorfwtapsensor.cpp \
     sensorfwlightsensor.cpp \
+    sensorfwlidsensor.cpp \
     main.cpp
diff --git a/src/plugins/sensors/sensorfw/sensorfwlidsensor.cpp b/src/plugins/sensors/sensorfw/sensorfwlidsensor.cpp
new file mode 100644
index 0000000..18661b9
--- /dev/null
+++ b/src/plugins/sensors/sensorfw/sensorfwlidsensor.cpp
@@ -0,0 +1,91 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include "sensorfwlidsensor.h"
+
+char const * const SensorfwLidSensor::id("sensorfw.lidsensor");
+
+SensorfwLidSensor::SensorfwLidSensor(QSensor *sensor)
+    : SensorfwSensorBase(sensor)
+    , m_initDone(false)
+{
+    init();
+    setReading<QLidReading>(&m_reading);
+    sensor->setDataRate(10);//set a default rate
+}
+
+void SensorfwLidSensor::slotDataAvailable(const LidData& data)
+{
+    switch (data.type_) {
+    case data.BackLid:
+        m_reading.setBackLidClosed(data.value_);
+        break;
+    case data.FrontLid:
+        m_reading.setFrontLidClosed(data.value_);
+        break;
+    };
+
+    m_reading.setTimestamp(data.timestamp_);
+    newReadingAvailable();
+}
+
+bool SensorfwLidSensor::doConnect()
+{
+    Q_ASSERT(m_sensorInterface);
+    return QObject::connect(m_sensorInterface, SIGNAL(lidChanged(LidData)),
+                            this, SLOT(slotDataAvailable(LidData)));
+}
+
+QString SensorfwLidSensor::sensorName() const
+{
+    return "lidsensor";
+}
+
+void SensorfwLidSensor::init()
+{
+    m_initDone = false;
+    initSensor<LidSensorChannelInterface>(m_initDone);
+}
+
+void SensorfwLidSensor::start()
+{
+    if (reinitIsNeeded)
+        init();
+    SensorfwSensorBase::start();
+}
diff --git a/src/plugins/sensors/sensorfw/sensorfwlidsensor.h b/src/plugins/sensors/sensorfw/sensorfwlidsensor.h
new file mode 100644
index 0000000..734fd0f
--- /dev/null
+++ b/src/plugins/sensors/sensorfw/sensorfwlidsensor.h
@@ -0,0 +1,70 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+
+#ifndef SENSORFWLIDSENSOR_H
+#define SENSORFWLIDSENSOR_H
+
+#include "sensorfwsensorbase.h"
+#include <QtSensors/qlidsensor.h>
+
+#include <lidsensor_i.h>
+#include <liddata.h>
+
+
+class SensorfwLidSensor : public SensorfwSensorBase
+{
+    Q_OBJECT
+
+public:
+    static char const * const id;
+    SensorfwLidSensor(QSensor *sensor);
+protected:
+    bool doConnect() Q_DECL_OVERRIDE;
+    QString sensorName() const Q_DECL_OVERRIDE;
+    void start() Q_DECL_OVERRIDE;
+    virtual void init();
+private:
+    QLidReading m_reading;
+    bool m_initDone;
+private slots:
+    void slotDataAvailable(const LidData& data);
+};
+
+#endif
diff --git a/src/sensors/doc/src/compatmap.qdoc b/src/sensors/doc/src/compatmap.qdoc
index ee94d51..633e4e5 100644
--- a/src/sensors/doc/src/compatmap.qdoc
+++ b/src/sensors/doc/src/compatmap.qdoc
@@ -162,6 +162,16 @@
     <td bgcolor="green"></td>
     </tr>
     <tr>
+    <td nowrap="nowrap">Lid Sensor</td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="gray"></td>
+    <td bgcolor="green"></td>
+    </tr>
+    <tr>
     <td nowrap="nowrap">Light Sensor</td>
     <td bgcolor="green"></td>
     <td bgcolor="green"></td>
diff --git a/src/sensors/qlidsensor.cpp b/src/sensors/qlidsensor.cpp
new file mode 100644
index 0000000..a759afd
--- /dev/null
+++ b/src/sensors/qlidsensor.cpp
@@ -0,0 +1,182 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#include <qlidsensor.h>
+#include "qlidsensor_p.h"
+
+QT_BEGIN_NAMESPACE
+
+IMPLEMENT_READING(QLidReading)
+
+/*!
+    \class QLidReading
+    \ingroup sensors_reading
+    \inmodule QtSensors
+    \since 5.9
+
+    \brief The QLidReading class holds readings from the Lid sensor.
+
+    A normal laptop has what we call a front lid.
+
+    If the laptop can be converted to a tablet by rotating or closing the lid
+    where the display is out, this is known as a back lid.
+
+    \section2 QLidReading Units
+    The Lid sensor can detect if a device's lid is closed or not. A lid can be a laptop,
+    a laptop that converts to a tablet, or even a cover for a tablet or phone.
+*/
+
+/*!
+    \property QLidReading::backLidClosed
+    \brief A value indicating whether the back lid is closed.
+    A back lid can be when a convertable laptop is closed
+    into to tablet mode without keyboard.
+
+    \sa {QLidReading Units}
+*/
+
+bool QLidReading::backLidClosed() const
+{
+    return d->backLidClosed;
+}
+
+/*!
+    Sets the backLidClosed value to \a closed.
+*/
+void QLidReading::setBackLidClosed(bool closed)
+{
+    d->backLidClosed = closed;
+}
+
+/*!
+    \property QLidReading::frontLidClosed
+    \brief A value indicating whether the front lid is closed.
+    A front lid would be a normal laptop lid.
+    \sa {QLidReading Units}
+*/
+
+bool QLidReading::frontLidClosed() const
+{
+    return d->frontLidClosed;
+}
+
+/*!
+    Sets the frontLidClosed value to \a closed.
+*/
+void QLidReading::setFrontLidClosed(bool closed)
+{
+    d->frontLidClosed = closed;
+}
+
+// =====================================================================
+
+/*!
+    \class QLidFilter
+    \ingroup sensors_filter
+    \inmodule QtSensors
+    \since 5.9
+
+    \brief The QLidFilter class is a convenience wrapper around QSensorFilter.
+
+    The only difference is that the filter() method features a pointer to QLidReading
+    instead of QSensorReading.
+*/
+
+/*!
+    \fn QLidFilter::filter(QLidReading *reading)
+
+    Called when \a reading changes. Returns false to prevent the reading from propagating.
+
+    \sa QSensorFilter::filter()
+*/
+
+bool QLidFilter::filter(QSensorReading *reading)
+{
+    return filter(static_cast<QLidReading*>(reading));
+}
+
+char const * const QLidSensor::type("QLidSensor");
+
+/*!
+    \class QLidSensor
+    \ingroup sensors_type
+    \inmodule QtSensors
+    \since 5.9
+
+    \brief The QLidSensor class is a convenience wrapper around QSensor.
+
+    The only behavioural difference is that this class sets the type properly.
+
+    This class also features a reading() function that returns a QLidReading instead
+    of a QSensorReading.
+
+    For details about how the sensor works, see \l QLidReading.
+
+    \sa QLidReading
+*/
+
+/*!
+    Construct the sensor as a child of \a parent.
+*/
+QLidSensor::QLidSensor(QObject *parent)
+    : QSensor(QLidSensor::type, parent)
+{
+}
+
+/*!
+    Destroy the sensor. Stops the sensor if it has not already been stopped.
+*/
+QLidSensor::~QLidSensor()
+{
+}
+
+/*!
+    \fn QLidSensor::reading() const
+
+    Returns the reading class for this sensor.
+
+    \sa QSensor::reading()
+*/
+
+QLidReading *QLidSensor::reading() const
+{
+    return static_cast<QLidReading*>(QSensor::reading());
+}
+
+#include "moc_qlidsensor.cpp"
+QT_END_NAMESPACE
diff --git a/src/sensors/qlidsensor.h b/src/sensors/qlidsensor.h
new file mode 100644
index 0000000..c0f88a7
--- /dev/null
+++ b/src/sensors/qlidsensor.h
@@ -0,0 +1,90 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QLIDSENSOR_H
+#define QLIDSENSOR_H
+
+#include <QtSensors/qsensor.h>
+
+QT_BEGIN_NAMESPACE
+
+class QLidReadingPrivate;
+
+class Q_SENSORS_EXPORT QLidReading : public QSensorReading
+{
+    Q_OBJECT
+    Q_PROPERTY(bool backLidClosed READ backLidClosed)
+    Q_PROPERTY(bool frontLidClosed READ frontLidClosed)
+    DECLARE_READING(QLidReading)
+public:
+
+    bool backLidClosed() const;
+    void setBackLidClosed(bool closed);
+
+    bool frontLidClosed() const;
+    void setFrontLidClosed(bool closed);
+
+Q_SIGNALS:
+    void backLidChanged(bool closed);
+    void frontLidChanged(bool closed);
+};
+
+class Q_SENSORS_EXPORT QLidFilter : public QSensorFilter
+{
+public:
+    virtual bool filter(QLidReading *reading) = 0;
+private:
+    bool filter(QSensorReading *reading) Q_DECL_OVERRIDE;
+};
+
+class Q_SENSORS_EXPORT QLidSensor : public QSensor
+{
+    Q_OBJECT
+public:
+    explicit QLidSensor(QObject *parent = Q_NULLPTR);
+    ~QLidSensor();
+    QLidReading *reading() const;
+    static char const * const type;
+
+private:
+    Q_DISABLE_COPY(QLidSensor)
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/sensors/qlidsensor_p.h b/src/sensors/qlidsensor_p.h
new file mode 100644
index 0000000..93d3b99
--- /dev/null
+++ b/src/sensors/qlidsensor_p.h
@@ -0,0 +1,69 @@
+/****************************************************************************
+**
+** Copyright (C) 2016 Canonical, Ltd
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the QtSensors module 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 The Qt Company. For licensing terms
+** and conditions see https://www.qt.io/terms-conditions. For further
+** information use the contact form at https://www.qt.io/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 3 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL3 included in the
+** packaging of this file. Please review the following information to
+** ensure the GNU Lesser General Public License version 3 requirements
+** will be met: https://www.gnu.org/licenses/lgpl-3.0.html.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 2.0 or (at your option) the GNU General
+** Public license version 3 or any later version approved by the KDE Free
+** Qt Foundation. The licenses are as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3
+** included in the packaging of this file. Please review the following
+** information to ensure the GNU General Public License requirements will
+** be met: https://www.gnu.org/licenses/gpl-2.0.html and
+** https://www.gnu.org/licenses/gpl-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+#ifndef QLIDSENSOR_P_H
+#define QLIDSENSOR_P_H
+
+//
+//  W A R N I N G
+//  -------------
+//
+// This file is not part of the Qt API. It exists purely as an
+// implementation detail. This header file may change from version to
+// version without notice, or even be removed.
+//
+// We mean it.
+//
+
+QT_BEGIN_NAMESPACE
+
+class QLidReadingPrivate
+{
+public:
+    QLidReadingPrivate()
+        : backLidClosed(false),frontLidClosed(false)
+    {
+    }
+
+    bool backLidClosed;
+    bool frontLidClosed;
+};
+
+QT_END_NAMESPACE
+
+#endif
diff --git a/src/sensors/sensors.pro b/src/sensors/sensors.pro
index 7a5c9d6..e66d427 100644
--- a/src/sensors/sensors.pro
+++ b/src/sensors/sensors.pro
@@ -72,7 +72,8 @@ SENSORS=\
     qtiltsensor\
     qgyroscope\
     qpressuresensor \
-    qhumiditysensor
+    qhumiditysensor \
+    qlidsensor
 
 for(s,SENSORS) {
     # Client API