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// Copyright (C) 2016 Jochen Becher
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#pragma once
#include <QGraphicsItem>
QT_BEGIN_NAMESPACE
class QGraphicsPathItem;
class QPainterPath;
QT_END_NAMESPACE
namespace qmt {
class Style;
class ArrowItem : public QGraphicsItem
{
class GraphicsHeadItem;
class GraphicsShaftItem;
public:
enum Shaft {
ShaftSolid,
ShaftDashed,
ShaftDot,
ShaftDashDot,
ShaftDashDotDot
};
enum Head {
HeadNone,
HeadCustom,
HeadOpen,
HeadTriangle,
HeadFilledTriangle,
HeadDiamond,
HeadFilledDiamond,
HeadDiamondFilledTriangle,
HeadFilledDiamondFilledTriangle
};
explicit ArrowItem(QGraphicsItem *parent = nullptr);
explicit ArrowItem(const ArrowItem &rhs, QGraphicsItem *parent = nullptr);
~ArrowItem() override;
void setShaft(Shaft shaft);
void setArrowSize(double arrowSize);
void setDiamondSize(double diamondSize);
void setStartHead(Head head);
void setStartHead(QGraphicsItem *startHeadItem);
void setEndHead(Head head);
void setEndHead(QGraphicsItem *endHeadItem);
void setPoints(const QList<QPointF> &points);
QRectF boundingRect() const override;
void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
QPainterPath shape() const override;
QPointF calcPointAtPercent(double percentage) const;
QLineF firstLineSegment() const;
QLineF lastLineSegment() const;
double startHeadLength() const;
double endHeadLength() const;
void update(const Style *style);
private:
void updateShaft(const Style *style);
void deleteHead(QGraphicsItem **headItem);
void updateHead(QGraphicsItem **headItem, Head head, const Style *style);
void updateHeadGeometry(QGraphicsItem *headItem, const QPointF &pos,
const QPointF &otherPos);
void updateGeometry();
double calcHeadLength(QGraphicsItem *headItem) const;
Shaft m_shaft = ShaftSolid;
GraphicsShaftItem *m_shaftItem = nullptr;
double m_arrowSize = 10.0;
double m_diamondSize = 15.0;
Head m_startHead = HeadNone;
QGraphicsItem *m_startHeadItem = nullptr;
Head m_endHead = HeadNone;
QGraphicsItem *m_endHeadItem = nullptr;
QList<QPointF> m_points;
};
} // namespace qmt
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