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

 /*
     SPDX-FileCopyrightText: 2008 Danilo Balzaque <danilo.balzaque@ltia.fc.unesp.br>
     SPDX-FileCopyrightText: 2008 Tadeu Araujo <tadeu.araujo@ltia.fc.unesp.br>
     SPDX-FileCopyrightText: 2008 Tiago Porangaba <tiago.porangaba@ltia.fc.unesp.br>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "FractionPainter.h"
 
 /* these includes are needed for Qt support */
 #include <QPainter>
 #include <QPaintEvent>
 
 #ifdef DEBUG
 #include <QDebug>
 #endif
 
 FractionPainter::FractionPainter(QWidget * parent) :
     FractionBaseWidget(parent)
 {
 #ifdef DEBUG
     qDebug() << "constructor FractionPainter";
 #endif
 }
 
 FractionPainter::~FractionPainter()
 {
 #ifdef DEBUG
     qDebug() << "destructor FractionPainter";
 #endif
 }
 
 void FractionPainter::paintEvent(QPaintEvent *)
 {
     QPainter paint(this);
     paintWidget(paint);
 }
 
 void FractionPainter::paintFraction(const QString & op, const Ratio & lr, int lm,
                                     const Ratio & rr, int rm)
 {
     str_operation = op;
     leftRatio = lr;
     leftMult = lm;
     rightRatio = rr;
     rightMult = rm;
 
     update();
 }
 
 void FractionPainter::paintWidget(QPainter & paint)
 {
     // our x position, we paint from left to right;
     // we don't want to start directly on the border, so add the margin
     int old_x = _MARGIN_X;
     int old_y = 0;
 
     // ratios and operation signs are painted with the same font
     m_font.setPointSize(24);
     m_font.setBold(true);
     paint.setFont(m_font);
 
     // set the pen for painting
     QPen pen(Qt::SolidLine);
     pen.setWidth(0);
     paint.setPen(pen);
 
     // get the font height; the font height doesn't change while painting
     QFontMetrics  fm(paint.fontMetrics());
 
     // now we can correctly set the height of the widget
     setMinimumHeight(2 * fm.lineSpacing() + 10);
     setMaximumHeight(2 * fm.lineSpacing() + 10);
 
     // get the current ratio and paint it
     paintRatio(paint, Ratio(leftRatio.numerator() * leftMult, leftRatio.denominator() * leftMult, false), old_x, old_y, fm);
 
     if (leftRatio.denominator() * leftMult < 10)
         old_x += 40;
     else
         old_x += 25;
 
     // paint the operation
     paintMiddle(paint, str_operation, old_x, old_y, fm, m_colorOperation);
 
     if (rightRatio.denominator() * rightMult < 10)
         old_x += 40;
     else
         old_x += 25;
 
     // get the current ratio and paint it
     paintRatio(paint, Ratio(rightRatio.numerator() * rightMult, rightRatio.denominator() * rightMult, false), old_x, old_y, fm);
 
     // stop the painter
     paint.end();
 
     // the space we needed for painting is the minimum width of the widget
     setMinimumWidth(old_x);
 }
 
 /* ------ public slots ------ */
 
 void FractionPainter::update()
 {
     updateAndRepaint();
 
     // update for itself
     ((QWidget *) this)->update();
 }