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#include <QApplication>

#include <QLabel>

#include <QPropertyAnimation>

#include <QSequentialAnimationGroup>

#include "tracer.h"

int main(int argc, char *argv[])

{

    QApplication app(argc, argv);

    QWidget window;

    window.resize(720, 96);

    window.show();

    QLabel *label1 = new QLabel(&window);

    label1->setPixmap(QPixmap(":/icons/left.png"));

    label1->move(16, 16);

    label1->show();

    QLabel *label2 = new QLabel(&window);

    label2->setPixmap(QPixmap(":/icons/right.png"));

    label2->move(320, 16);

    label2->show();

    QPropertyAnimation *anim1 = new QPropertyAnimation(label1, "pos");

    anim1->setDuration(2500);

    anim1->setStartValue(QPoint(16, 16));

    anim1->setEndValue(QPoint(320, 16));

    QPropertyAnimation *anim2 = new QPropertyAnimation(label2, "pos");

    anim2->setDuration(2500);

    anim2->setStartValue(QPoint(320, 16));

    anim2->setEndValue(QPoint(640, 16));

    QSequentialAnimationGroup group;

    group.addAnimation(anim1);

    group.addAnimation(anim2);

    Tracer tracer(&window);

    QObject::connect(anim1, SIGNAL(valueChanged(QVariant)),

                     &tracer, SLOT(recordValue(QVariant)));

    QObject::connect(anim2, SIGNAL(valueChanged(QVariant)),

                     &tracer, SLOT(recordValue(QVariant)));

    QObject::connect(anim1, SIGNAL(finished()), &tracer, SLOT(checkValue()));

    QObject::connect(anim2, SIGNAL(finished()), &tracer, SLOT(checkValue()));

    group.start();

    return app.exec();

}