43 lines
1.1 KiB
C++
43 lines
1.1 KiB
C++
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#include "PlotRectItem.h"
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#include <QPainter>
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#include <QwtScaleMap>
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PlotRectItem::PlotRectItem(const QString &title)
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: QwtPlotItem() {
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setTitle(title);
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setZ(1000);
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m_pen = QPen(Qt::red, 2, Qt::SolidLine);
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m_brush = QBrush(QColor(255, 0, 0, 30));
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}
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void PlotRectItem::setRect(const QRectF &rect) {
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m_rect = rect;
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}
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void PlotRectItem::setPen(const QPen &pen) {
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m_pen = pen;
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}
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void PlotRectItem::setBrush(const QBrush &brush) {
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m_brush = brush;
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}
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void PlotRectItem::draw(QPainter *painter,
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const QwtScaleMap &xMap, const QwtScaleMap &yMap,
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const QRectF &) const {
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const int x1 = xMap.transform(m_rect.left());
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const int x2 = xMap.transform(m_rect.right());
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const int y1 = yMap.transform(m_rect.top());
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const int y2 = yMap.transform(m_rect.bottom());
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const QRect rect(QPoint(x1, y1), QPoint(x2, y2));
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painter->save();
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painter->setPen(m_pen);
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painter->setBrush(m_brush);
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painter->drawRect(rect);
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painter->restore();
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}
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QRectF PlotRectItem::boundingRect() const {
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return m_rect;
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}
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