EnergySpectrumAnalyer/src/EnergyCountPeakFitView/EnergyCountPeakFitView.h

#ifndef ENERGYCOUNTPEAKFITVIEW_H
#define ENERGYCOUNTPEAKFITVIEW_H
#include <QObject>
#include <QWidget>
#include <MeasureAnalysisView.h>
#include <QwtPlotPicker>
#include <QwtPickerDragRectMachine>
#include <QRubberBand>   // 新增
#include <qwt_plot_shapeitem.h>   // 新增
#include <QDateTime>
#include <QJsonArray>
#include <QJsonObject>
#include "PeakFitParamsDialog.h"

#include "DataCalcProcess/FindPeaksBySvd.h"
#include "DataCalcProcess/NolinearLeastSquaresCurveFit.h"
#include "DataCalcProcess/AdaptiveSimpsonIntegrate.h"
#include "DataCalcProcess/MathModelDefine.h"

struct PeakFitResult
{
       double center;      // 峰中心能量 (keV)
       double amplitude;   // 高斯振幅
       double sigma;       // 高斯宽度
       double fwhm;        // 半高宽 = sigma * 2.355
       double area;        // 峰面积（积分）
       double baseline;    // 常数项 C
       double sigmoidH;    // Sigmoid 项高度 H
       double sigmoidW;    // Sigmoid 项宽度 W
   };
struct PeakFitHistoryItem {
    QDateTime timestamp;          // 时间戳
    double center;                // 峰中心能量 (keV)
    double fwhm;                  // 半高宽
    double area;                  // 峰面积
    double amplitude;             // 幅度 A
    double sigma;                 // 标准差 delt
    double sigmoidH;              // H
    double sigmoidW;              // W
    double baseline;              // C
    double xMin;                  // 拟合曲线显示范围左边界
    double xMax;                  // 拟合曲线显示范围右边界

    QJsonObject toJson() const;
    static PeakFitHistoryItem fromJson(const QJsonObject& obj);
};

class PlotRectItem;         // 前向声明
class QMenu;
class CustomQwtPlot;
class CustomQwtPlotXaxisSelector;
class QwtPlotPicker;
class QwtPlotCurve;

class EnergyCountPeakFitView : public MeasureAnalysisView
{
    Q_OBJECT
public:
    EnergyCountPeakFitView(QWidget *parent = nullptr);
    virtual ~EnergyCountPeakFitView();

    virtual void InitViewWorkspace(const QString& project_name) override final;
    virtual void SetAnalyzeDataFilename(const QMap<QString, QVariant>& data_files_set);

private:
    void setupPlot();
    void setupMenu();
    void loadDataFromFile(const QString &data_name, const QString& filename);


    void loadHistoryFromFile();
    void saveHistoryToFile();
    void saveCurrentFitToHistory();               // 保存当前拟合结果
    void displayFitFromHistory(const PeakFitHistoryItem& item); // 显示历史拟合曲线
private slots:
    void onActionCurveShowSetting();
    void onActionPlotConfigure();
    void clearAllSelectionRects();
    void clearFitCurves();   // 清除所有拟合曲线


    // [NEW] 新增菜单槽函数
       void onActionSaveCurrentFit();
       void onActionShowFitHistory();
protected:
    bool eventFilter(QObject* watched, QEvent* event) override;  // 事件过滤器

private:
    void startSelection(const QPoint& pos);
    void updateSelection(const QPoint& pos);
    void finishSelection();
    void addSelectionRect(const QRectF& plotRect);
    void fadeSelectionRectBorders();

QList<PeakFitResult> performPeakFitting(const QVector<double>& x, const QVector<double>& y, const arma::vec* userP0 = nullptr);
    // 根据拟合参数生成曲线
    QwtPlotCurve* createFitCurve(const PeakFitResult& result, double xMin, double xMax, const QString& name);
private:
    CustomQwtPlot* _plot = nullptr;
    QMenu* _menu = nullptr;
    QDialog* _curve_show_setting_dlg = nullptr;
    CustomQwtPlotXaxisSelector* _data_selector = nullptr;
    // 手动框选状态
    bool _isSelecting = false;
    QPoint _selectionStart;
    QRubberBand* _rubberBand = nullptr;   // 原生橡皮筋
    QList<PlotRectItem*> _selectionRectItems;

    QwtPlotCurve* _fittedCurve = nullptr;   // 显示拟合结果的曲线

    // 存储当前显示的拟合曲线，用于清除
    QList<QwtPlotCurve*> _fitCurves;


    // [NEW] 历史记录相关成员
    QList<PeakFitHistoryItem> _fitHistoryList;
    QString _historyFilePath;

    // [NEW] 最近一次拟合结果（用于手动保存）
    PeakFitResult _lastFitResult;
    arma::vec _lastFitParams;     // 6个拟合参数 (A, delt, H, W, C, P)
    double _lastXMin = 0.0, _lastXMax = 0.0;
    bool _hasLastFit = false;
    QString _workspace;

};

#endif // ENERGYCOUNTPEAKFITVIEW_H