File indexing completed on 2024-04-14 03:40:26

 /*
     FractionBaseWidget.cpp  -  base fraction painting
     SPDX-FileCopyrightText: 2004 Sebastian Stein <seb.kde@hpfsc.de>
     SPDX-FileCopyrightText: 2008 Tiago Porangaba <tiago.porangaba@ltia.fc.unesp.br>
     SPDX-FileCopyrightText: 2008 Tadeu Araujo <tadeu.araujo@ltia.fc.unesp.br>
     SPDX-FileCopyrightText: 2008 Danilo Balzaque <danilo.balzaque@ltia.fc.unesp.br>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #include "FractionBaseWidget.h"
 
 /* these includes are needed for KDE support */
 
 /* these includes are needed for Qt support */
 #include <QPainter>
 
 #ifdef DEBUG
 #include <QDebug>
 #endif
 
 #include "settingsclass.h"
 
 FractionBaseWidget::FractionBaseWidget(QWidget * parent) :
     QWidget(parent)
 {
 #ifdef DEBUG
     qDebug() << "constructor FractionBaseWidget";
 #endif
 
     // set colors and font used for task displaying
     setColorAndFont();
 }
 
 FractionBaseWidget::~FractionBaseWidget()
 {
 #ifdef DEBUG
     qDebug() << "destructor FractionBaseWidget";
 #endif
 }
 
 void FractionBaseWidget::updateAndRepaint()
 {
     setColorAndFont();
     update();
 }
 
 void FractionBaseWidget::paintRatio(QPainter & paint, const Ratio &tmp_ratio, int & x_pos, int & y_pos, QFontMetrics & fm, bool show_mixed, bool addMargin, bool show_center)
 {
     QPen pen = paint.pen(); // get the pen
     int fontHeight = fm.lineSpacing(); // get the font height
 
     int int_numerator, int_denominator, int_mixed;
     QString str_numerator, str_denominator;
     QString str_mixed;
 
     int fontWidth; // to store the width of the last thing painted
     int tmp_int;
 
     // check if we have to show the ratio as mixed number
     //         11            1
     // if yes, -- becomes  2 -
     //         5             5
     int_numerator = tmp_ratio.numerator();
     int_denominator = tmp_ratio.denominator();
     if (show_mixed == true && qAbs(int_numerator) >= qAbs(int_denominator)) {
         // calculate the mixed number
         int_mixed = int (int_numerator / int_denominator);
 
         // the negative sign is in front of the mixed number
         int_numerator = qAbs(int_numerator);
         int_denominator = qAbs(int_denominator);
 
         // we have to reduce the numerator by the mixed number * denominator
         int_numerator = int_numerator % int_denominator;
 
         // now we can convert the numbers into strings for painting
         str_mixed.setNum(int_mixed);
         str_numerator.setNum(int_numerator);
         str_denominator.setNum(int_denominator);
 
         // paint the front part of the mixed number
         paintMiddle(paint, str_mixed, x_pos, y_pos, fm, m_colorNumber);
     } else {
 
         // don't show the ratio as mixed number
         str_numerator.setNum(int_numerator);
         str_denominator.setNum(int_denominator);
     } // if (show_mixed == true && qAbs(int_numerator) > qAbs(int_denominator))
 
     // get the text width of the current ratio
     fontWidth = fm.boundingRect(str_numerator).width();
     tmp_int = fm.boundingRect(str_denominator).width();
     if (tmp_int > fontWidth)
         fontWidth = tmp_int;
 
     // show numerator and denominator in m_colorNumber
     pen.setColor(m_colorNumber);
     paint.setPen(pen);
 
     // make sure we don't display something like:   0
     //                                            7 -
     //                                              3
     if (!(show_mixed == true && int_numerator == 0)) {
         if (show_center == true)
             x_pos = 80 - fontWidth / 2;
         if (!(int_denominator == 1 && show_mixed == false)) {
             // paint the numerator
             paint.drawText(x_pos, y_pos, fontWidth, fontHeight, Qt::AlignCenter, str_numerator);
             // paint the fraction line between numerator and denominator
             paint.fillRect(x_pos, y_pos + fontHeight + 4, fontWidth, 2, m_colorLine);
             // paint the denominator
             paint.drawText(x_pos, y_pos + fontHeight + 10, fontWidth, fontHeight, Qt::AlignCenter, str_denominator);
         } else {
             // paint the numerator and move the y position down to align with the + signal
             paint.drawText(x_pos, y_pos + fontHeight - fontHeight / 2, fontWidth,
                            fontHeight, Qt::AlignCenter, str_numerator);
         }
 
         // move the x position to the right by adding the width used for painting
         // the ratio and a margin
         x_pos += fontWidth;
 
         if (addMargin == true)
             x_pos += _MARGIN_X;
     }
 
     return;
 }
 
 void FractionBaseWidget::paintMiddle(QPainter & paint,
                                      const QString &paint_str,
                                      int & x_pos, int & y_pos, QFontMetrics & fm,
                                      const QColor &color, bool addMargin)
 {
     // get the pen, font height and font width
     QPen pen = paint.pen();
     int fontHeight = fm.lineSpacing();
     int fontWidth = fm.boundingRect(paint_str).width();
 
     // paint the string
     pen.setColor(color);
     paint.setPen(pen);
     paint.drawText(x_pos, y_pos + fontHeight - fontHeight / 2, fontWidth, fontHeight, Qt::AlignCenter, paint_str);
 
     // move the x position to the right by adding the width used for
     // painting the string and a margin
     x_pos += fontWidth;
 
     if (addMargin == true)
         x_pos += _MARGIN_X;
 
     return;
 }
 
 void FractionBaseWidget::setColorAndFont()
 {
     /* set colors */
     m_colorNumber = SettingsClass::numberColor();
     m_colorLine = SettingsClass::fractionBarColor();
     m_colorOperation = SettingsClass::operationColor();
 
     /* set font */
     m_font = SettingsClass::taskFont();
 
     // repaint
     update();
 
     return;
 }
 
 #include "moc_FractionBaseWidget.cpp"