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/***************************************************************************
InvertableSpinBox.cpp - a spinbox with invertable spin buttons
-------------------
begin : Sun Jan 12 2003
copyright : (C) 2003 by Thomas Eschenbacher
email : Thomas.Eschenbacher@gmx.de
***************************************************************************/
/***************************************************************************
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
***************************************************************************/
#include <QObject>
#include <QWidget>
#include "libgui/InvertableSpinBox.h"
//***************************************************************************
Kwave::InvertableSpinBox::InvertableSpinBox(QWidget *parent)
:QSpinBox(parent), m_inverse(false)
{
connect(this, SIGNAL(valueChanged(int)),
this, SLOT(checkValueChange(int)));
}
//***************************************************************************
void Kwave::InvertableSpinBox::setInverse(bool inverse)
{
if (m_inverse == inverse) return; // nothing to do
m_inverse = inverse;
if (/* now */ inverse) {
// relax limits by 1
setMinimum(minimum() - 1);
setMaximum(maximum() + 1);
} else {
// reduce limits by 1
setMinimum(minimum() + 1);
setMaximum(maximum() - 1);
}
}
//***************************************************************************
void Kwave::InvertableSpinBox::checkValueChange(int value)
{
if (m_inverse) {
// in this case the real limits are tighter by 1
if (value <= minimum()) setValue(minimum() + 1);
if (value >= maximum()) setValue(maximum() - 1);
}
}
//***************************************************************************
void Kwave::InvertableSpinBox::stepUp()
{
if (m_inverse) {
if (value() > minimum() + 1) QSpinBox::stepDown();
} else {
QSpinBox::stepUp();
}
}
//***************************************************************************
void Kwave::InvertableSpinBox::stepDown()
{
if (m_inverse) {
if (value() + 1 < maximum()) QSpinBox::stepUp();
} else {
QSpinBox::stepDown();
}
}
//***************************************************************************
//***************************************************************************
#include "moc_InvertableSpinBox.cpp"
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