Warning, file /education/kmplot/kmplot/ksliderwindow.cpp was not indexed or was modified since last indexation (in which case cross-reference links may be missing, inaccurate or erroneous).

 /*
     KmPlot - a math. function plotter for the KDE-Desktop
 
     SPDX-FileCopyrightText: 2005 Fredrik Edemar <f_edemar@linux.se>
     SPDX-FileCopyrightText: 2007  David Saxton <david@bluehaze.org>
 
     This file is part of the KDE Project.
     KmPlot is part of the KDE-EDU Project.
 
     SPDX-License-Identifier: GPL-2.0-or-later
 
 */
 
 // local includes
 #include "ksliderwindow.h"
 #include "view.h"
 #include "xparser.h"
 
 #include <KConfigGroup>
 
 #include <QCloseEvent>
 #include <QDialogButtonBox>
 #include <QPushButton>
 #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)
     : QDialog(parent)
 {
     setModal(false);
     QWidget *widget = new QWidget(this);
     setWindowTitle(i18nc("@title:window", "Sliders"));
 
     QVBoxLayout *layout = new QVBoxLayout(this);
     layout->addWidget(widget);
 
     Q_ASSERT(SLIDER_COUNT == 4); // safety check, in case SLIDER_COUNT is increased but not this code
 
     for (int i = 0; i < SLIDER_COUNT; ++i) {
         m_sliders[i] = new SliderWidget(widget, i);
         connect(m_sliders[i], &SliderWidget::valueChanged, this, &KSliderWindow::valueChanged);
         layout->addWidget(m_sliders[i]);
     }
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);
     connect(buttonBox, &QDialogButtonBox::rejected, this, &KSliderWindow::reject);
     layout->addWidget(buttonBox);
 
     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