#pragma once

#include <QObject>
#include <QGraphicsLineItem>
#include <QPainter>
#include <QPen>
#include <QGraphicsSceneMouseEvent>
#include <QDebug>
#include <cmath>
#include <memory>
#include <QPointF>
#include "global.h"
#include "GlobalDefine.h"

class MyQGraphicsLineItem : public QObject, public QGraphicsLineItem
{
	Q_OBJECT

public:
	MyQGraphicsLineItem(QObject *parent);
	MyQGraphicsLineItem(qreal x1, qreal y1, qreal x2, qreal y2, QGraphicsItem *parent = nullptr)
		: QGraphicsLineItem(x1, y1, x2, y2, parent) {}
	~MyQGraphicsLineItem();
	bool CoordAxis() const { return m_isCoordAxis; }
	void CoordAxis(bool val) { m_isCoordAxis = val; }
	int Id() const { return m_id; }
	void Id(int val) { m_id = val; }
	QPointF FirstPoint() const { return m_firstPoint; }
	void FirstPoint(QPointF val) { m_firstPoint = val; }
	QPointF SecondPoint() const { return m_secondPoint; }
	void SecondPoint(QPointF val) { m_secondPoint = val; }
	double ActualP1DieCoordX() const { return m_actualP1DieCoordX; }
	void ActualP1DieCoordX(double val) { m_actualP1DieCoordX = val; }
	double ActualP1DieCoordY() const { return m_actualP1DieCoordY; }
	void ActualP1DieCoordY(double val) { m_actualP1DieCoordY = val; }
	double ActualP2DieCoordX() const { return m_actualP2DieCoordX; }
	void ActualP2DieCoordX(double val) { m_actualP2DieCoordX = val; }
	double ActualP2DieCoordY() const { return m_actualP2DieCoordY; }
	void ActualP2DieCoordY(double val) { m_actualP2DieCoordY = val; }
private:
	bool JudgeIsFeatruePoint(QPointF& mousePos);
	double GetStartAngle();

public:
	void SetLineItemAttr(QPointF& firstPoint, QPointF& secondPoint);
	void SetActualCoordAndUpdate(double actualP1DieCoordX,double actualP1DieCoordY,
		double actualP2DieCoordX,double actualP2DieCoordY);

protected:
	void paint(QPainter *painter, const QStyleOptionGraphicsItem *option, QWidget *widget) override;
	void mousePressEvent(QGraphicsSceneMouseEvent *event) override;
	void mouseMoveEvent(QGraphicsSceneMouseEvent *event) override;
	void mouseReleaseEvent(QGraphicsSceneMouseEvent *event) override;

signals:
	void signal_select(int id);

private:
	bool m_isPressDown; //鼠标左键已经按下
	QPointF m_mousePressDownPos; //鼠标按下时在场景中的位置
	double m_rotateAngle = 0.0; //鼠标按下时旋转的角度

	bool m_isCoordAxis = false; //是不是坐标轴线
	QLineF m_levelLine; //水平线，用于计算旋转夹角
	QPointF m_firstPoint; //自己线段第一个点
	QPointF m_secondPoint; //自己线段第二个点	

	bool m_isInFraturePoint = false; //是否在绘制的特征点内，用于按住进行旋转
	bool m_isNeedSelect = false; //是否在场景中被选中

	double m_actualP1DieCoordX = 0.0; //界面设置的真实坐标
	double m_actualP1DieCoordY = 0.0;//界面设置的真实坐标
	double m_actualP2DieCoordX = 0.0;//界面设置的真实坐标
	double m_actualP2DieCoordY = 0.0;//界面设置的真实坐标

	int m_id; //唯一标识
};