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/*
* KmPlot - a math. function plotter for the KDE-Desktop
*
* Copyright (C) 2005 Fredrik Edemar <f_edemar@linux.se>
* 2007 David Saxton <david@bluehaze.org>
*
* This file is part of the KDE Project.
* KmPlot is part of the KDE-EDU Project.
*
* 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.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
*/
// local includes
#include "ksliderwindow.h"
#include "view.h"
#include "xparser.h"
#include <QCloseEvent>
#include <QGroupBox>
#include <QVBoxLayout>
//BEGIN class SliderWidget
SliderWidget::SliderWidget( QWidget *parent, int number )
: QGroupBox( i18n( "Slider %1", number+1 ), parent )
{
m_number = number;
setupUi( this );
slider->setToolTip( i18n( "Move slider to change the parameter of the function plot connected to this slider." ) );
KConfig config( "kmplotrc" );
KConfigGroup group = config.group( "slider" + QString::number(m_number) );
min->setText( group.readEntry( "min", "0" ) );
max->setText( group.readEntry( "max", "10" ) );
slider->setValue( group.readEntry( "value", 500 ) );
connect(slider, &QSlider::valueChanged, this, &SliderWidget::updateValue);
connect(min, &EquationEdit::editingFinished, this, &SliderWidget::updateValue);
connect(max, &EquationEdit::editingFinished, this, &SliderWidget::updateValue);
updateValue();
}
SliderWidget::~SliderWidget()
{
KConfig config( "kmplotrc" );
KConfigGroup group = config.group( "slider" + QString::number(m_number) );
group.writeEntry( "min", min->text() );
group.writeEntry( "max", max->text() );
group.writeEntry( "value", slider->value() );
}
void SliderWidget::updateValue()
{
valueLabel->setText( View::self()->posToString( value(), 0.001*(max->value() - min->value()), View::DecimalFormat ) );
emit valueChanged();
}
double SliderWidget::value()
{
double prop = double(slider->value() - slider->minimum()) / double(slider->maximum() - slider->minimum());
return prop * (max->value() - min->value()) + min->value();
}
//END class SliderWidget
//BEGIN class KSliderWindow
KSliderWindow::KSliderWindow( QWidget * parent ) :
KDialog( parent )
{
setModal( false );
QWidget * widget = new QWidget( this );
setMainWidget( widget );
setCaption( i18n("Sliders") );
setButtons( Close );
Q_ASSERT( SLIDER_COUNT == 4 ); // safety check, incase SLIDER_COUNT is increased but not this code
QVBoxLayout *layout = new QVBoxLayout( widget );
layout->setMargin( 0 );
for ( int i = 0; i < SLIDER_COUNT; ++i )
{
m_sliders[i] = new SliderWidget( widget, i );
connect( m_sliders[i], SIGNAL(valueChanged()), this, SIGNAL(valueChanged()) );
layout->addWidget( m_sliders[i] );
}
resize( layout->minimumSize() );
}
KSliderWindow::~KSliderWindow()
{
}
double KSliderWindow::value( int slider )
{
Q_ASSERT( (slider>=0) && (slider < SLIDER_COUNT) );
return m_sliders[slider]->value();
}
void KSliderWindow::closeEvent( QCloseEvent * e)
{
emit windowClosed();
e->accept();
}
//END class KSliderWindow
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