#pragma once

#include <QWidget>
#include <QObject>
#include <QDebug>
#include <QEvent>
#include <QWheelEvent>

#include <QGraphicsView>
#include <QGraphicsScene>
//#include <QGraphicsItem>
//#include <QPainter>

#include <opencv2/opencv.hpp>

class CvGraphicsViewWidget :public QGraphicsView
{
	Q_OBJECT

public:
	CvGraphicsViewWidget(QWidget* parent = Q_NULLPTR);
	virtual ~CvGraphicsViewWidget() {}

public:
	void showImage(cv::Mat const& _himg);

	static void CvImage2QPixmap(cv::Mat const& fromCv, QPixmap& toPix);
	static bool QImage2CvImage(QImage& fromQ, cv::Mat& toCv);
	//static void QPixmapToCvRegion(QPixmap const& _pix, cv::Rect2d& tarImg);

protected:
	//void paintEvent(QPaintEvent* event) override;
	//void wheelEvent(QWheelEvent* ev);

private:
	QGraphicsScene* mGraphicsScene;
	//QGraphicsRectItem* item;

	//QColor penColor = QColor(0, 180, 255);//画笔颜色
	//int penWidth = 2;//画笔宽度
	qreal mScaledFactor;   //窗口缩放倍数

};