main.cpp Example File

demos/mobile/qtbubblelevel/main.cpp
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#include <QtDeclarative>
#include <QtGui>
#include <QAccelerometer>

#include "accelerometerfilter.h"
#include "settings.h"
#include "taskswitcher.h"

// Lock orientation in Symbian
#ifdef Q_OS_SYMBIAN
    #include <eikenv.h>
    #include <eikappui.h>
    #include <aknenv.h>
    #include <aknappui.h>
#endif

QTM_USE_NAMESPACE

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);

#ifdef Q_OS_SYMBIAN
    // Lock orientation to landscape in Symbian
    CAknAppUi* appUi = dynamic_cast<CAknAppUi*> (CEikonEnv::Static()->AppUi());
    TRAP_IGNORE(
        if (appUi)
            appUi->SetOrientationL(CAknAppUi::EAppUiOrientationLandscape);
    )
#endif

    QDeclarativeView view;
    view.setSource(QUrl("qrc:/qml/BubbleLevel.qml"));
    view.setResizeMode(QDeclarativeView::SizeRootObjectToView);

    // ![1]
    Settings settings;

    QAccelerometer sensor;
    AccelerometerFilter filter;
    sensor.addFilter(&filter);

    QObject *rootObject = dynamic_cast<QObject*>(view.rootObject());

    // Associate Qt / QML signals and slots
    QObject::connect(rootObject, SIGNAL(saveCorrectionAngle(const QVariant&)),
                     &settings, SLOT(saveCorrectionAngle(const QVariant&)));

    QObject::connect(&filter, SIGNAL(rotationChanged(const QVariant&)),
                     rootObject, SLOT(handleRotation(const QVariant&)));

    QObject::connect(&settings, SIGNAL(correctionAngle(const QVariant&)),
                     rootObject, SLOT(setCorrectionAngle(const QVariant&)));

    QObject::connect((QObject*)view.engine(), SIGNAL(quit()),
                     &app, SLOT(quit()));

#ifdef Q_WS_MAEMO_5
    TaskSwitcher taskSwitcher;

    QObject::connect(rootObject, SIGNAL(minimizeApplication()),
                     &taskSwitcher, SLOT(minimizeApplication()));

    // Show the task switcher button
    rootObject->setProperty("taskSwitcherVisible", true);
#endif

    // Read correction factor from permanent storage and emit it to QML side
    settings.loadAndEmitCorrectionAngle();

    // Begin measuring of the accelerometer sensor
    sensor.start();

#if defined(Q_WS_MAEMO_5) || defined(Q_OS_SYMBIAN) || defined(Q_WS_SIMULATOR)
    view.setGeometry(QApplication::desktop()->screenGeometry());
    view.showFullScreen();
#else
    view.setGeometry((QRect(100, 100, 800, 480)));
    view.show();
#endif

    return app.exec();
}

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