File indexing completed on 2024-04-14 03:40:28

 /*
     TaskWidget.cpp  -  paint a task
     SPDX-FileCopyrightText: 2004 Sebastian Stein <seb.kde@hpfsc.de>
     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 "TaskWidget.h"
 
 /* these includes are needed for KDE support */
 #include <KLocalizedString>
 
 /* these includes are needed for Qt support */
 #include <QPainter>
 #include <QPaintEvent>
 
 #ifdef DEBUG
 #include <QDebug>
 #endif
 
 TaskWidget::TaskWidget(QWidget * parent,
                        const Task &para_task) :
     FractionBaseWidget(parent), m_task(para_task)
 {
 #ifdef DEBUG
     qDebug() << QStringLiteral("constructor TaskWidget");
 #endif
 }
 
 TaskWidget::~TaskWidget()
 {
 #ifdef DEBUG
     qDebug() << QStringLiteral("destructor TaskWidget");
 #endif
 }
 
 void TaskWidget::setTask(const Task &para_task)
 {
     m_task = para_task;
     update();
 }
 
 void TaskWidget::setQuestionMixed(bool value)
 {
     m_questionMixed = value;
     update();
 }
 
 void TaskWidget::paintEvent(QPaintEvent* /* p_paintEvent */)
 {
     // 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;
 
     // strings holding numerator, denominator and the operation sign
     QString str_operation;
 
     // operation sign as number
     short tmp_operation;
 
     // start the painter
     QPainter paint(this);
 
     // ratios and operation signs are painted with the same font
     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);
 
     // loop through all ratios and paint them
     for (unsigned short tmp_counter = 0; tmp_counter < m_task.getNumberOfRatios(); tmp_counter++) {
         // get the current ratio and paint it
         paintRatio(paint, m_task.get_ratio_n(tmp_counter), old_x, old_y, fm, m_questionMixed);
 
         // now check if we have another operation to show
         // if not we will stop showing ratios as well
         if (tmp_counter < m_task.getNumberOfOperations()) {
             // get the operation sign
             tmp_operation = m_task.get_op_n(tmp_counter);
 
             // we have to convert the operation sign into a string
             switch (tmp_operation) {
             case ADD :
                 str_operation = i18nc("addition symbol", "+");
                 break;
             case SUB :
                 str_operation = i18nc("subtraction symbol", "−");
                 break;
             case MUL :
                 str_operation = i18nc("multiplication symbol", "×");
                 break;
             case DIV :
                 str_operation = i18nc("division symbol", "/");
                 break;
             } /* switch (operation) */
 
             // add proper spacing around the operator
             str_operation = QStringLiteral(" ") + str_operation + QStringLiteral(" ");
 
             // paint the operation
             paintMiddle(paint, str_operation, old_x, old_y, fm, m_colorOperation);
 
         } else {
             // no further operations to show, so we always show the = sign at the
             // end of a task
             paintMiddle(paint, QStringLiteral(" = "), old_x, old_y, fm, m_colorOperation);
 
             break;
         } // if (tmp_counter < m_task.getNumberOfOperations())
     }
 
     // stop the painter
     paint.end();
 
     // the space we needed for painting is the minimum width of the widget
     setMinimumWidth(old_x);
 
     return;
 }
 
 #include "moc_TaskWidget.cpp"