#ifndef WAFFLEGRAPHICSVIEW_H
#define WAFFLEGRAPHICSVIEW_H
#include <QGraphicsView>
#include <QGraphicsScene>
#include <QGraphicsRectItem>
#include <QMouseEvent>
#include "DieItem.h"
#include <QLabel>
#include <QPointer>

class WaffleGraphicsView : public QGraphicsView {
    Q_OBJECT

public:
    WaffleGraphicsView(QGraphicsScene* scene, QWidget* parent = nullptr);


protected:
    void mousePressEvent(QMouseEvent* event) override;
    void mouseMoveEvent(QMouseEvent* event) override;
    void mouseReleaseEvent(QMouseEvent* event) override;
    void wheelEvent(QWheelEvent* event) override;
    bool eventFilter(QObject *obj, QEvent *event) override;

private:
    bool selecting; // 是否正在框选
    QPoint lastPos;
    QPointF selectionStart; // 框选起点
    QGraphicsRectItem* selectionRect; // 框选矩形
    double scaleFactor; // 当前缩放比例
    bool isDragging = false;
    QMap<QPair<int, int>, QGraphicsItem*> selectedItemsMap;
    QLabel *thumbnailLabel; // 缩略图标签
    bool thumbnailVisible; // 缩略图可见状态

    QPair<int, int> topLeftIndex;
    QPair<int, int> bottomRightIndex;
    QPointer<DieItem> selectedItem;
    QPointer<DieItem> topLeftItem;
    QPointer<DieItem> bottomRightItem;

    void showThumbnail();
    void hideThumbnail();

    void checkAndCreateRegion();
    void clearRegion();
    void setRegion();
};

#endif // WAFFLEGRAPHICSVIEW_H