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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
#ifndef ARROW_H
#define ARROW_H
#include <QGraphicsLineItem>
class DiagramItem;
//! [0]
class Arrow : public QGraphicsLineItem
{
public:
enum { Type = UserType + 4 };
Arrow(DiagramItem *startItem, DiagramItem *endItem,
QGraphicsItem *parent = nullptr);
int type() const override { return Type; }
QRectF boundingRect() const override;
QPainterPath shape() const override;
void setColor(const QColor &color) { myColor = color; }
DiagramItem *startItem() const { return myStartItem; }
DiagramItem *endItem() const { return myEndItem; }
void updatePosition();
protected:
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
QWidget *widget = nullptr) override;
private:
DiagramItem *myStartItem;
DiagramItem *myEndItem;
QPolygonF arrowHead;
QColor myColor = Qt::black;
};
//! [0]
#endif // ARROW_H
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