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42 lines
1013 B
C
42 lines
1013 B
C
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// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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#ifndef ARROW_H
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#define ARROW_H
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#include <QGraphicsLineItem>
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class DiagramItem;
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//! [0]
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class Arrow : public QGraphicsLineItem
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{
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public:
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enum { Type = UserType + 4 };
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Arrow(DiagramItem *startItem, DiagramItem *endItem,
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QGraphicsItem *parent = nullptr);
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int type() const override { return Type; }
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QRectF boundingRect() const override;
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QPainterPath shape() const override;
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void setColor(const QColor &color) { myColor = color; }
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DiagramItem *startItem() const { return myStartItem; }
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DiagramItem *endItem() const { return myEndItem; }
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void updatePosition();
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protected:
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void paint(QPainter *painter, const QStyleOptionGraphicsItem *option,
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QWidget *widget = nullptr) override;
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private:
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DiagramItem *myStartItem;
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DiagramItem *myEndItem;
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QPolygonF arrowHead;
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QColor myColor = Qt::black;
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};
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//! [0]
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#endif // ARROW_H
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