File indexing completed on 2024-04-21 03:42:04

 /*
     KmPlot - a math. function plotter for the KDE-Desktop
 
     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
 
 */
 
 #include "calculator.h"
 #include "equationedit.h"
 #include "equationeditorwidget.h"
 #include "xparser.h"
 
 #include <KConfigGroup>
 #include <KTextEdit>
 
 #include <QDialogButtonBox>
 #include <QScrollBar>
 #include <QVBoxLayout>
 
 // BEGIN class Calculator
 Calculator::Calculator(QWidget *parent)
     : QDialog(parent)
 {
     setModal(false);
     QWidget *widget = new QWidget(this);
     setWindowTitle(i18nc("@title:window", "Calculator"));
 
     QVBoxLayout *layout = new QVBoxLayout(this);
 
     m_display = new KTextEdit(widget);
     QSizePolicy displaySizePolicy = m_display->sizePolicy();
     displaySizePolicy.setVerticalStretch(10);
     displaySizePolicy.setVerticalPolicy(QSizePolicy::MinimumExpanding);
     m_display->setSizePolicy(displaySizePolicy);
     layout->addWidget(m_display);
 
     m_input = new EquationEditorWidget(this);
     layout->addWidget(m_input);
 
     m_display->setReadOnly(true);
 
     QDialogButtonBox *buttonBox = new QDialogButtonBox(QDialogButtonBox::Close);
     connect(buttonBox, &QDialogButtonBox::accepted, this, &Calculator::accept);
     connect(buttonBox, &QDialogButtonBox::rejected, this, &Calculator::reject);
     layout->addWidget(buttonBox);
 
     connect(m_input->edit, &EquationEdit::returnPressed, this, &Calculator::calculate);
 
     // Set minimum size and margin to avoid cutting the right side
     resize(1.05 * layout->minimumSize());
     m_input->edit->setFocus();
 }
 
 Calculator::~Calculator()
 {
     m_input->deleteLater();
 }
 
 void Calculator::calculate()
 {
     Parser::Error error;
     double value = XParser::self()->eval(m_input->edit->text(), &error);
 
     m_displayText += m_input->edit->text().replace('<', "&lt;");
 
     if (error == Parser::ParseSuccess)
         m_displayText += " = <b>" + Parser::number(value) + "</b>";
     else
         m_displayText += " = ? <font color=\"blue\">(" + Parser::errorString(error) + ")</font>";
 
     m_displayText += "<br>";
 
     m_display->document()->setHtml(m_displayText);
     m_display->verticalScrollBar()->setValue(m_display->verticalScrollBar()->maximum());
     m_input->edit->selectAll();
 }
 // END class Calculator
 
 #include "moc_calculator.cpp"