#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include <QGraphicsScene>
#include <QTreeWidget>
#include <QMouseEvent>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(QWidget *parent = nullptr);
    ~MainWindow();
private slots:
    void onHmiItemClicked(QTreeWidgetItem *item);
protected:
    bool eventFilter(QObject *obj, QEvent *event) override;
private:
    Ui::MainWindow *ui;
    bool canDrawCircle;
    bool canDrawRectangle;
    QGraphicsScene *scene;          // QGraphicsScene，用于容纳图形项
};
#endif // MAINWINDOW_H