main.cpp

qt-x11-opensource-src-4.1.4.tar.gz源码

/****************************************************************************
**
** Copyright (C) 2005-2006 Trolltech ASA. All rights reserved.
**
** This file is part of the example classes of the Qt Toolkit.
**
** This file may be used under the terms of the GNU General Public
** License version 2.0 as published by the Free Software Foundation
** and appearing in the file LICENSE.GPL included in the packaging of
** this file.  Please review the following information to ensure GNU
** General Public Licensing requirements will be met:
** http://www.trolltech.com/products/qt/opensource.html
**
** If you are unsure which license is appropriate for your use, please
** review the following information:
** http://www.trolltech.com/products/qt/licensing.html or contact the
** sales department at [e-mail].
**
** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
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****************************************************************************/

#include <QApplication>
#include <QFont>
#include <QGridLayout>
#include <QPushButton>
#include <QVBoxLayout>

#include "cannonfield.h"
#include "lcdrange.h"

class MyWidget : public QWidget
{
public:
    MyWidget(QWidget *parent = 0);
};

MyWidget::MyWidget(QWidget *parent)
    : QWidget(parent)
{
    QPushButton *quit = new QPushButton(tr("&Quit"));
    quit->setFont(QFont("Times", 18, QFont::Bold));

    connect(quit, SIGNAL(clicked()), qApp, SLOT(quit()));

    LCDRange *angle = new LCDRange;
    angle->setRange(5, 70);

    LCDRange *force = new LCDRange;
    force->setRange(10, 50);

    CannonField *cannonField = new CannonField;

    connect(angle, SIGNAL(valueChanged(int)),
            cannonField, SLOT(setAngle(int)));
    connect(cannonField, SIGNAL(angleChanged(int)),
            angle, SLOT(setValue(int)));

    connect(force, SIGNAL(valueChanged(int)),
            cannonField, SLOT(setForce(int)));
    connect(cannonField, SIGNAL(forceChanged(int)),
            force, SLOT(setValue(int)));

    QVBoxLayout *leftLayout = new QVBoxLayout;
    leftLayout->addWidget(angle);
    leftLayout->addWidget(force);

    QGridLayout *gridLayout = new QGridLayout;
    gridLayout->addWidget(quit, 0, 0);
    gridLayout->addLayout(leftLayout, 1, 0);
    gridLayout->addWidget(cannonField, 1, 1, 2, 1);
    gridLayout->setColumnStretch(1, 10);
    setLayout(gridLayout);

    angle->setValue(60);
    force->setValue(25);
    angle->setFocus();
}

int main(int argc, char *argv[])
{
    QApplication app(argc, argv);
    MyWidget widget;
    widget.setGeometry(100, 100, 500, 355);
    widget.show();
    return app.exec();
}