webwidget.cpp

/* This file is part of mobile_hybrid_demo (HTML5 demonstration)

Copyright © 2010 Nokia Corporation and/or its subsidiary(-ies).
All rights reserved.

Contact:  Nokia Corporation qt-info@nokia.com

You may use this file under the terms of the BSD license as follows:

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modification, are permitted provided that the following conditions are met: *
Redistributions of source code must retain the above copyright notice, this
list of conditions and the following disclaimer. * Redistributions in binary
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*/

#include "webwidget.h"
#include <QPainter>
#include <QWebSettings>
#include <QWebFrame>
#include <QAccelerometer>
#include <QDebug>

// #include <QGLWidget>

WebWidget::WebWidget()
{
    setFrameShape(NoFrame);
    setScene(new QGraphicsScene(this));
    setContextMenuPolicy(Qt::NoContextMenu);

    m_webview.setResizesToContents(false);
    QWebSettings::globalSettings()->setAttribute(QWebSettings::AcceleratedCompositingEnabled, false);
    QWebSettings::globalSettings()->setAttribute(QWebSettings::TiledBackingStoreEnabled, false);
    scene()->addItem(&m_webview);
    m_webview.focusWidget();

    accelerometerSensor = new QAccelerometer(this);
    inactiveTimer.setSingleShot(true);

    if (!Timer.isActive())
        Timer.start(20, this);

    // start the sensor
    if (!accelerometerSensor->isActive())
        accelerometerSensor->start();

    if (!accelerometerSensor->isActive())
    {
        //qDebug() << "accelerometer sensor didn't start!" << endl;
    }
}

void WebWidget::loadUrl(const QUrl &url)
{
    m_webview.load(url);
    QWebFrame *frame = m_webview.page()->mainFrame();
    frame->addToJavaScriptWindowObject("testObject", this->parent());
}

void WebWidget::resizeEvent(QResizeEvent *event)
{
    m_webview.resize(event->size());
    scene()->setSceneRect(QRect(QPoint(), event->size()));
    QGraphicsView::resizeEvent(event);
}

bool WebWidget::event(QEvent *event)
{
    switch (event->type()) {
    case QEvent::Timer:
        if (static_cast<QTimerEvent*>(event)->timerId() == Timer.timerId())
            updateXYZPosition(); // update the xyz position
        break;
    default:
        break;
    }
    return QGraphicsView::event(event);
}

void WebWidget::updateXYZPosition()
{
    QAccelerometerReading *reading = accelerometerSensor->reading();
    qreal xacceleration = 0.0f;
    qreal yacceleration = 0.0f;
    qreal zacceleration = 0.0f;
    if (reading) {
        xacceleration = reading->x();
        yacceleration = reading->y();
        zacceleration = reading->z();
        m_webview.page()->mainFrame()->evaluateJavaScript("accelerometer("+QString::number(qRound(xacceleration*10))+","+QString::number(qRound(yacceleration*10))+","+QString::number(qRound(zacceleration*10))+")");

     }
}