src/practice/boxeswidget.cpp

0001 /*
0002     SPDX-FileCopyrightText: 2009-2010 Daniel Laidig <d.laidig@gmx.de>
0003     SPDX-License-Identifier: GPL-2.0-or-later
0004 */
0005
0006 #include "boxeswidget.h"
0007
0008 #include "themedbackgroundrenderer.h"
0009
0010 #include <KEduVocText>
0011 #include <QDebug>
0012
0013 #include <QBrush>
0014 #include <QEvent>
0015 #include <QPainter>
0016
0017 using namespace Practice;
0018
0019 BoxesWidget::BoxesWidget(QWidget *parent)
0020     : ImageWidget(parent)
0021 {
0022     setBoxCount(KV_MAX_GRADE);
0023     setScalingEnabled(false);
0024     setAlignment(Qt::AlignLeft | Qt::AlignBottom);
0025 }
0026
0027 void BoxesWidget::setRenderer(ThemedBackgroundRenderer *renderer)
0028 {
0029     m_renderer = renderer;
0030     m_rect = m_renderer->getRectForId(QStringLiteral("boxes-noscale")).toRect();
0031     m_fixedSize = true;
0032     if (!m_rect.isValid()) {
0033         m_rect = m_renderer->getRectForId(QStringLiteral("boxes")).toRect();
0034         m_fixedSize = false;
0035     }
0036     updatePixmap();
0037 }
0038
0039 void BoxesWidget::setBoxCount(int boxCount)
0040 {
0041     m_boxCount = boxCount;
0042     updatePixmap();
0043 }
0044
0045 void BoxesWidget::setBoxes(int currentBox, int lastBox)
0046 {
0047     if (currentBox == m_currentBox && lastBox == m_lastBox) {
0048         return;
0049     }
0050     m_currentBox = currentBox;
0051     m_lastBox = lastBox;
0052     updatePixmap();
0053 }
0054
0055 QSize BoxesWidget::minimumSizeHint() const
0056 {
0057     if (m_fixedSize) {
0058         return m_rect.size();
0059     }
0060     return ImageWidget::minimumSizeHint();
0061 }
0062
0063 void BoxesWidget::updatePixmap()
0064 {
0065     if (!m_renderer)
0066         return;
0067
0068     QSize imageSize = m_rect.size();
0069     if (!m_fixedSize) {
0070         imageSize.scale(size(), Qt::KeepAspectRatio);
0071     }
0072     QImage image(imageSize, QImage::Format_ARGB32_Premultiplied);
0073     image.fill(QColor(Qt::transparent).rgba());
0074     QPainter p(&image);
0075
0076     for (int i = 0; i < m_boxCount; i++) {
0077         QString id = "box-" + QString::number(i + 1);
0078         if (i + 1 == m_currentBox) {
0079             id += QLatin1String("-active");
0080         }
0081         drawElement(&p, id);
0082     }
0083     if (m_lastBox != -1 && m_currentBox != -1 && m_lastBox != m_currentBox) {
0084         drawElement(&p, "arrow-" + QString::number(m_lastBox) + '-' + QString::number(m_currentBox));
0085     }
0086     setPixmap(QPixmap::fromImage(image));
0087 }
0088
0089 bool BoxesWidget::event(QEvent *e)
0090 {
0091     if (e->type() == QEvent::Resize)
0092         updatePixmap();
0093     return ImageWidget::event(e);
0094 }
0095
0096 void BoxesWidget::drawElement(QPainter *p, const QString &id)
0097 {
0098     QRect rect = m_renderer->getRectForId(id).toRect();
0099     QPoint pos = rect.topLeft() - m_rect.topLeft();
0100     if (!m_fixedSize) {
0101         QSize scaledSize = m_rect.size();
0102         scaledSize.scale(size(), Qt::KeepAspectRatio);
0103         qreal scale = qreal(scaledSize.width()) / m_rect.width();
0104         rect.setWidth(rect.width() * scale);
0105         rect.setHeight(rect.height() * scale);
0106         pos.setX(pos.x() * scale);
0107         pos.setY(pos.y() * scale);
0108     }
0109
0110     p->drawPixmap(pos, m_renderer->getPixmapForId(id, rect.size()));
0111 }