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cannonfield.cpp Example File
tutorial/t8/cannonfield.cpp

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** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
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** accordance with the Qt Preview License Agreement provided with the
** Software.
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#include <QPainter>

#include "cannonfield.h"

CannonField::CannonField(QWidget *parent)
    : QWidget(parent)
{
    currentAngle = 45;
    setPalette(QPalette(QColor(250, 250, 200)));
    setAutoFillBackground(true);
}

void CannonField::setAngle(int angle)
{
    if (angle < 5)
        angle = 5;
    if (angle > 70)
        angle = 70;
    if (currentAngle == angle)
        return;
    currentAngle = angle;
    update();
    emit angleChanged(currentAngle);
}

void CannonField::paintEvent(QPaintEvent * /* event */)
{
    QPainter painter(this);
    painter.drawText(200, 200,
                     tr("Angle = ") + QString::number(currentAngle));
}


Copyright © 2006 Trolltech Trademarks
Qt 4.2.0-rc1