#ifndef RANGESLIDER_H
#define RANGESLIDER_H

#include <QWidget>

class RangeSlider : public QWidget {
    Q_OBJECT

public:
    explicit RangeSlider(int style_ = 0,QWidget *parent = nullptr);

    void setRange(float min, float max);
    void setSliderWidth(int width);  // 新增方法：设置宽度
    float lowerValue() const;
    float upperValue() const;
    void setLowerValue(float val);
    void setUpperValue(float val);
    float m_lower = 3.5;
    float m_upper = 6.5;
    int style = 0;
signals:
    void rangeChanged(float lower, float upper);

protected:
    void paintEvent(QPaintEvent *) override;
    void mousePressEvent(QMouseEvent *) override;
    void mouseMoveEvent(QMouseEvent *) override;
    void mouseReleaseEvent(QMouseEvent *) override;

private:
    float m_min = 0;
    float m_max = 10;

    int sliderWidth = 10;  // 默认宽度（可以根据需求调整）

    int handleRadius = 8;
    enum HandleType { NoHandle, LowerHandle, UpperHandle };
    HandleType currentHandle = NoHandle;

    float valueToY(float value) const;
    float yToValue(float y) const;
    HandleType handleHitTest(float y) const;
    int niceStep(int range, int maxLabels);
    void drawTicks(QPainter *p);
    void drawTemperatureStyle(QPainter *p);
};

#endif // RANGESLIDER_H