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#include <QDeclarativeEngine>

#include <QDeclarativeComponent>

#include <QDebug>

#include <QApplication>

#include <QTime>

#include <QDeclarativeContext>

#include <QGraphicsScene>

#include <QGraphicsRectItem>

class Timer : public QObject

{

    Q_OBJECT

    Q_PROPERTY(QDeclarativeComponent *component READ component WRITE setComponent);

public:

    Timer();

    QDeclarativeComponent *component() const;

    void setComponent(QDeclarativeComponent *);

    static Timer *timerInstance();

    void run(uint);

    bool willParent() const;

    void setWillParent(bool p);

private:

    void runTest(QDeclarativeContext *, uint);

    QDeclarativeComponent *m_component;

    static Timer *m_timer;

    bool m_willparent;

    QGraphicsScene m_scene;

    QGraphicsRectItem m_item;

};

QML_DECLARE_TYPE(Timer);

Timer *Timer::m_timer = 0;

Timer::Timer()

: m_component(0), m_willparent(false)

{

    if (m_timer)

        qWarning("Timer: Timer already registered");

    m_timer = this;

    m_scene.setItemIndexMethod(QGraphicsScene::NoIndex);

    m_scene.addItem(&m_item);

}

QDeclarativeComponent *Timer::component() const

{

    return m_component;

}

void Timer::setComponent(QDeclarativeComponent *c)

{

    m_component = c;

}

Timer *Timer::timerInstance()

{

    return m_timer;

}

void Timer::run(uint iterations)

{

    QDeclarativeContext context(qmlContext(this));

    QObject *o = m_component->create(&context);

    QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);

    if (m_willparent && go) 

        go->setParentItem(&m_item);

    delete o;

    runTest(&context, iterations);

}

bool Timer::willParent() const

{

    return m_willparent;

}

void Timer::setWillParent(bool p)

{

    m_willparent = p;

}

void Timer::runTest(QDeclarativeContext *context, uint iterations)

{

    QTime t;

    t.start();

    for (uint ii = 0; ii < iterations; ++ii) {

        QObject *o = m_component->create(context);

        QGraphicsObject *go = qobject_cast<QGraphicsObject *>(o);

        if (m_willparent && go) 

            go->setParentItem(&m_item);

        delete o;

    }

    int e = t.elapsed();

    qWarning() << "Total:" << e << "ms, Per iteration:" << qreal(e) / qreal(iterations) << "ms";

}

void usage(const char *name)

{

    qWarning("Usage: %s [-iterations <count>] [-parent] <qml file>", name);

    exit(-1);

}

int main(int argc, char ** argv)

{

    QApplication app(argc, argv);

    qmlRegisterType<Timer>("QmlTime", 1, 0, "Timer");

    uint iterations = 1024;

    QString filename;

    bool willParent = false;

    for (int ii = 1; ii < argc; ++ii) {

        QByteArray arg(argv[ii]);

        if (arg == "-iterations") {

            if (ii + 1 < argc) {

                ++ii;

                QByteArray its(argv[ii]);

                bool ok = false;

                iterations = its.toUInt(&ok);

                if (!ok)

                    usage(argv[0]);

            } else {

                usage(argv[0]);

            }

        } else if (arg == "-parent") {

            willParent = true;

        } else {

            filename = QLatin1String(argv[ii]);

        }

    }

    if (filename.isEmpty())

#ifdef Q_OS_SYMBIAN

        filename = QLatin1String("./tests/item_creation/data.qml");

#else

        usage(argv[0]);

#endif

    QDeclarativeEngine engine;

    QDeclarativeComponent component(&engine, filename);

    if (component.isError()) {

        qWarning() << component.errors();

        return -1;

    }

    QObject *obj = component.create();

    if (!obj) {

        qWarning() << component.errors();

        return -1;

    }

    Timer *timer = Timer::timerInstance();

    if (!timer) {

        qWarning() << "A Tester.Timer instance is required.";

        return -1;

    }

#ifdef Q_OS_SYMBIAN

    willParent = true;

#endif

    timer->setWillParent(willParent);

    if (!timer->component()) {

        qWarning() << "The timer has no component";

        return -1;

    }

#ifdef Q_OS_SYMBIAN

    iterations = 1024;

#endif

    timer->run(iterations);

    return 0;

}

#include "qmltime.moc"