lcdrange.cpp
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/****************************************************************************
**
** Copyright (C) 2005-2007 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 sales@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 <QLCDNumber>
#include <QLabel>
#include <QSlider>
#include <QVBoxLayout>
#include "lcdrange.h"
LCDRange::LCDRange(QWidget *parent)
: QWidget(parent)
{
init();
}
LCDRange::LCDRange(const QString &text, QWidget *parent)
: QWidget(parent)
{
init();
setText(text);
}
void LCDRange::init()
{
QLCDNumber *lcd = new QLCDNumber(2);
lcd->setSegmentStyle(QLCDNumber::Filled);
slider = new QSlider(Qt::Horizontal);
slider->setRange(0, 99);
slider->setValue(0);
label = new QLabel;
label->setAlignment(Qt::AlignHCenter | Qt::AlignTop);
label->setSizePolicy(QSizePolicy::Preferred, QSizePolicy::Fixed);
connect(slider, SIGNAL(valueChanged(int)),
lcd, SLOT(display(int)));
connect(slider, SIGNAL(valueChanged(int)),
this, SIGNAL(valueChanged(int)));
QVBoxLayout *layout = new QVBoxLayout;
layout->addWidget(lcd);
layout->addWidget(slider);
layout->addWidget(label);
setLayout(layout);
setFocusProxy(slider);
}
int LCDRange::value() const
{
return slider->value();
}
QString LCDRange::text() const
{
return label->text();
}
void LCDRange::setValue(int value)
{
slider->setValue(value);
}
void LCDRange::setRange(int minValue, int maxValue)
{
if (minValue < 0 || maxValue > 99 || minValue > maxValue) {
qWarning("LCDRange::setRange(%d, %d)\n"
"\tRange must be 0..99\n"
"\tand minValue must not be greater than maxValue",
minValue, maxValue);
return;
}
slider->setRange(minValue, maxValue);
}
void LCDRange::setText(const QString &text)
{
label->setText(text);
}