src/practice/mixedlettersmodewidget.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2010 Daniel Laidig <d.laidig@gmx.de>
0003     SPDX-License-Identifier: GPL-2.0-or-later
0004 */
0005
0006 #include "mixedlettersmodewidget.h"
0007 #include "ui_practice_widget_written.h"
0008
0009 #include <KColorScheme>
0010 #include <KRandom>
0011 #include <QFontMetrics>
0012 #include <QPainter>
0013 #include <QRandomGenerator>
0014
0015 using namespace Practice;
0016
0017 MixedLettersModeWidget::MixedLettersModeWidget(GuiFrontend *frontend, QWidget *parent)
0018     : WrittenPracticeWidget(frontend, parent)
0019 {
0020     m_ui->mixedSolutionLabel->show();
0021     connect(m_ui->answerEdit, &QLineEdit::textChanged, this, &MixedLettersModeWidget::updatePixmap);
0022 }
0023
0024 void MixedLettersModeWidget::setSolutionFont(const QFont &font)
0025 {
0026     m_solutionFont = font;
0027     WrittenPracticeWidget::setSolutionFont(font);
0028 }
0029
0030 void MixedLettersModeWidget::setQuestion(const QVariant &question)
0031 {
0032     m_question = question.toString();
0033     WrittenPracticeWidget::setQuestion(question);
0034 }
0035
0036 void MixedLettersModeWidget::showQuestion()
0037 {
0038     WrittenPracticeWidget::showQuestion();
0039     updatePixmap();
0040 }
0041
0042 void MixedLettersModeWidget::updatePixmap()
0043 {
0044     QFontMetrics fm(m_solutionFont);
0045     int charHeight = fm.height();
0046     int charWidth = fm.averageCharWidth();
0047     m_pixmap = QPixmap(charWidth * m_mixedSolution.length() * 2 + charWidth, charHeight * 3);
0048     m_pixmap.fill(QColor(0, 0, 0, 0));
0049
0050     QPainter p(&m_pixmap);
0051     p.setFont(m_solutionFont);
0052     KColorScheme scheme(QPalette::Active);
0053     QPen defaultPen = p.pen();
0054     defaultPen.setColor(palette().color(QPalette::WindowText));
0055     QString enteredChars = m_ui->answerEdit->text();
0056     int i = 0;
0057     for (QChar ch : qAsConst(m_mixedSolution)) {
0058         int pos = enteredChars.indexOf(ch);
0059         if (pos != -1) {
0060             p.setPen(scheme.foreground(KColorScheme::InactiveText).color());
0061             enteredChars.remove(pos, 1);
0062         } else {
0063             p.setPen(defaultPen);
0064         }
0065         p.drawText(charWidth + charWidth * i * 2, charHeight + int(m_positions.at(i) * charHeight * 0.25), ch);
0066         i++;
0067     }
0068     m_ui->mixedSolutionLabel->setPixmap(m_pixmap);
0069     m_ui->mixedSolutionLabel->setMinimumSize(m_pixmap.size());
0070 }
0071
0072 void MixedLettersModeWidget::setSolution(const QVariant &solution)
0073 {
0074     WrittenPracticeWidget::setSolution(solution);
0075     m_solution = solution.toString();
0076     QList<QChar> chars;
0077     for (QChar ch : qAsConst(m_solution)) {
0078         chars.append(ch);
0079     }
0080     KRandom::shuffle(chars);
0081     m_mixedSolution.clear();
0082     m_positions.clear();
0083     for (QChar ch : qAsConst(chars)) {
0084         m_mixedSolution.append(ch);
0085         m_positions.append(QRandomGenerator::global()->bounded(8));
0086     }
0087 }