Home · All Classes · Main Classes · Grouped Classes · Modules · Functions

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

 /****************************************************************************
 **
 ** Copyright (C) 2005-2008 Trolltech ASA. All rights reserved.
 **
 ** This file is part of the example classes of the Qt Toolkit.
 **
 ** Licensees holding a valid Qt License Agreement may use this file in
 ** accordance with the rights, responsibilities and obligations
 ** contained therein.  Please consult your licensing agreement or
 ** contact sales@trolltech.com if any conditions of this licensing
 ** agreement are not clear to you.
 **
 ** Further information about Qt licensing is available at:
 ** http://www.trolltech.com/products/qt/licensing.html or by
 ** contacting info@trolltech.com.
 **
 ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
 ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
 **
 ****************************************************************************/

 #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 © 2008 Trolltech Trademarks
Qt 4.3.5