/* * Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public License * along with this library; see the file COPYING.LIB. If not, write to * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, * Boston, MA 02110-1301, USA. * */ #include "config.h" #include "DeviceOrientationProviderQt.h" namespace WebCore { DeviceOrientationProviderQt::DeviceOrientationProviderQt() : m_controller(0) { m_sensor.addFilter(this); m_lastOrientation = DeviceOrientation::create(); } DeviceOrientationProviderQt::~DeviceOrientationProviderQt() { } void DeviceOrientationProviderQt::setController(DeviceOrientationController* controller) { if (!controller) stop(); m_controller = controller; } void DeviceOrientationProviderQt::start() { m_sensor.start(); } void DeviceOrientationProviderQt::stop() { m_sensor.stop(); } bool DeviceOrientationProviderQt::filter(QRotationReading* reading) { if (m_controller) { // Provide device orientation data according W3C spec: // http://dev.w3.org/geo/api/spec-source-orientation.html // Qt mobility (QtSensors in Qt5) provide these data via QRotationSensor // using the QRotationReading class: // - the rotation around z axis (alpha) is given as z in QRotationReading; // - the rotation around x axis (beta) is given as x in QRotationReading; // - the rotation around y axis (gamma) is given as y in QRotationReading; // See: http://doc.qt.nokia.com/qtmobility-1.0/qrotationreading.html // The Z (alpha) rotation angle is checked via hasAlpha() private method, // depending if the device is able do detect the alpha rotation. X (beta) and // Y (gamma) axis are availble in this context. m_lastOrientation = DeviceOrientation::create(hasAlpha(), reading->z(), /* x available */ true, reading->x(), /* y available */ true, reading->y()); m_controller->didChangeDeviceOrientation(m_lastOrientation.get()); } // We are the only filter, so no need to propagate. return false; } }