File indexing completed on 2024-05-12 04:46:01 

0001 #include "patharrowbackground.h"
0002 
0003 #include <QPainter>
0004 #include <QBrush>
0005 
0006 PathArrowBackground::PathArrowBackground(QQuickItem *parent)
0007     : QQuickPaintedItem(parent)
0008     , m_color(Qt::white)
0009     , m_arrowWidth(16)
0010 {
0011     connect(this, SIGNAL(colorChanged()), this, SLOT(update()));
0012     connect(this, SIGNAL(arrowWidthChanged()), this, SLOT(update()));
0013 }
0014 
0015 void PathArrowBackground::paint(QPainter *painter)
0016 {
0017     QBrush brush(m_color);
0018 
0019     painter->setBrush(brush);
0020     painter->setPen(Qt::NoPen);
0021     painter->setRenderHint(QPainter::Antialiasing);
0022 
0023     const QPointF topLeftPoints[3] = {
0024         QPointF(boundingRect().left() - 1, 0),
0025         QPointF(boundingRect().left() + m_arrowWidth, 0),
0026         QPointF(boundingRect().left() + m_arrowWidth, boundingRect().top() + boundingRect().height() * 0.5)
0027     };
0028 
0029     const QPointF bottomLeftPoints[3] = {
0030         QPointF(boundingRect().left() - 1, boundingRect().bottom()),
0031         QPointF(boundingRect().left() + m_arrowWidth, boundingRect().bottom()),
0032         QPointF(boundingRect().left() + m_arrowWidth, boundingRect().top() + boundingRect().height() * 0.5)
0033     };
0034 
0035     const QPointF rightPoints[3] = {
0036         QPointF(boundingRect().right() - m_arrowWidth - 1, 0),
0037         QPointF(boundingRect().right(), boundingRect().top() + boundingRect().height() * 0.5),
0038         QPointF(boundingRect().right() - m_arrowWidth - 1, boundingRect().bottom()),
0039     };
0040 
0041     painter->drawConvexPolygon(topLeftPoints, 3);
0042     painter->drawConvexPolygon(bottomLeftPoints, 3);
0043     painter->drawConvexPolygon(rightPoints, 3);
0044 
0045     painter->drawRect(m_arrowWidth, 0, boundingRect().width() - m_arrowWidth * 2, boundingRect().height());
0046 }
0047