#include <QtGui>#include "ticker.h"Ticker::Ticker(QWidget *parent)    : QWidget(parent){    offset = 0;    myTimerId = 0;}void Ticker::setText(const QString &newText){    myText = newText;    update();    updateGeometry();}QSize Ticker::sizeHint() const{    return fontMetrics().size(0, text());}void Ticker::paintEvent(QPaintEvent * /* event */){    QPainter painter(this);    int textWidth = fontMetrics().width(text());    if (textWidth < 1)        return;    int x = -offset;    while (x < width()) {        painter.drawText(x, 0, textWidth, height(),                         Qt::AlignLeft | Qt::AlignVCenter, text());        x += textWidth;    }}void Ticker::showEvent(QShowEvent * /* event */){    myTimerId = startTimer(30);}void Ticker::timerEvent(QTimerEvent *event){    if (event->timerId() == myTimerId) {        ++offset;        if (offset >= fontMetrics().width(text()))            offset = 0;        scroll(-1, 0);    } else {        QWidget::timerEvent(event);    }}void Ticker::hideEvent(QHideEvent * /* event */){    killTimer(myTimerId);}