add QSensorGestures API. Long live QSensorGestures!

Change-Id: Iada4e8888aad8b7b2180cc0bfb8576a766f75b24
Sanity-Review: Qt Sanity Bot <qt_sanity_bot@ovi.com>
Reviewed-by: Lincoln Ramsay <lincoln.ramsay@nokia.com>

1 files changed, 161 insertions, 0 deletions

diff --git a/src/plugins/sensorgestures/shake/qshakerecognizer.cpp b/src/plugins/sensorgestures/shake/qshakerecognizer.cpp
new file mode 100644
index 00000000..e544b5aa
--- /dev/null
+++ b/src/plugins/sensorgestures/shake/qshakerecognizer.cpp
@@ -0,0 +1,161 @@
+/****************************************************************************
+**
+** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
+**
+** This file is part of the QtSensors module of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** GNU Lesser General Public License Usage
+** 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.
+**
+** 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.
+**
+** Other Usage
+** Alternatively, this file may be used in accordance with the terms and
+** conditions contained in a signed written agreement between you and Nokia.
+**
+**
+**
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QDebug>
+#include <QTimer>
+
+#include "qshakerecognizer.h"
+
+QShakeSensorGestureRecognizer::QShakeSensorGestureRecognizer(QObject *parent)
+    : QSensorGestureRecognizer(parent)
+    , active(0)
+{
+    pXaxis = 0;nXaxis = 0;
+    pYaxis = 0;nYaxis = 0;
+    pZaxis = 0;nZaxis = 0;
+    timerTimeout = 1500;
+}
+
+QShakeSensorGestureRecognizer::~QShakeSensorGestureRecognizer()
+{
+}
+
+void QShakeSensorGestureRecognizer::create()
+{
+    accel = new QAccelerometer(this);
+    accel->connectToBackend();
+    timer = new QTimer(this);
+
+    connect(timer,SIGNAL(timeout()),this,SLOT(timeout()));
+    timer->setSingleShot(true);
+    timer->setInterval(timerTimeout);
+
+    connect(accel,SIGNAL(readingChanged()),this,SLOT(accelChanged()));
+
+}
+
+bool QShakeSensorGestureRecognizer::start()
+{
+    active = accel->start();
+
+    return active;
+}
+
+bool QShakeSensorGestureRecognizer::stop()
+{
+    accel->stop();
+    active = accel->isActive();
+    return !active;
+}
+
+
+bool QShakeSensorGestureRecognizer::isActive()
+{
+    return active;
+}
+
+QString QShakeSensorGestureRecognizer::id() const
+{
+    return QString("QtSensors.shake");
+}
+
+
+#define NUMBER_SHAKES 3
+void QShakeSensorGestureRecognizer::accelChanged()
+{
+    qreal x = accel->reading()->x();
+    qreal z = accel->reading()->z();
+    qreal xdiff =  pXaxis - x;
+
+    if (abs(xdiff) > 10) {
+        nXaxis++;
+        if (timer->isActive()) {
+            timer->stop();
+        }
+        timer->start();
+    }
+    if (nXaxis >= NUMBER_SHAKES) {
+
+        Q_EMIT shake();
+        Q_EMIT detected("shake");
+
+        if (timer->isActive()) {
+            timer->stop();
+        }
+        timeout();
+    }
+
+    //    if (abs(zdiff) > 10) {
+    //        nZaxis++;
+    //        if (timer->isActive()) {
+    //            timer->stop();
+    //        }
+    //        timer->start();
+    //    }
+
+    //    if (nZaxis >= NUMBER_SHAKES) {
+    //        Q_EMIT detected("ShakeZ");
+    //        Q_EMITshake();
+    //        if (timer->isActive()) {
+    //            timer->stop();
+    //        }
+    //        timeout();
+    //    }
+    pXaxis = x;
+    pZaxis = z;
+}
+
+void QShakeSensorGestureRecognizer::timeout()
+{
+    nXaxis = 0;
+    nYaxis = 0;
+    nZaxis = 0;
+}
+
+int QShakeSensorGestureRecognizer::thresholdTime() const
+{
+    return timerTimeout;
+}
+
+void QShakeSensorGestureRecognizer::setThresholdTime(int msec)
+{
+    timer->setInterval(msec);
+}