#ifndef WAVECHART_H
#define WAVECHART_H

/**
 * 曲线图表控件
 * 1:可设置间隔
 * 2:可设置标题
 * 3:可设置是否显示横线及坐标点
 * 4:可设置背景色文字颜色
 * 5:可设置范围值及x轴y轴步长
 * 6:暂时不支持最小值小于0的数据
 */

#include "Common.h"
#include "VControlObject.h"


class SmoothCurveCreator
{
public:
	static QPainterPath createSmoothCurve(const QVector<QPointF>& points);

private:
	static void calculateFirstControlPoints(double*& result, const double* rhs, int n);
	static void calculateControlPoints(const QVector<QPointF>& knots, QVector<QPointF>* firstControlPoints, QVector<QPointF>* secondControlPoints);
};


/// <summary>
/// 曲线图的封装类
/// </summary>
class VWaveChart : public QWidget, public VControlObject
{
	Q_OBJECT

	Q_PROPERTY(QRect geometry READ geometry WRITE setGeometry)

	Q_PROPERTY(double minValue READ getMinValue WRITE setMinValue)
	Q_PROPERTY(double maxValue READ getMaxValue WRITE setMaxValue)
	Q_PROPERTY(double xStep READ getXStep WRITE setXStep)
	Q_PROPERTY(double yStep READ getYStep WRITE setYStep)

	Q_PROPERTY(double space READ getSpace WRITE setSpace)
	Q_PROPERTY(QString title READ getTitle WRITE setTitle)
    Q_PROPERTY(bool smooth READ getSmooth WRITE setSmooth)
	Q_PROPERTY(bool showHLine READ getShowHLine WRITE setShowHLine)
	Q_PROPERTY(bool showPoint READ getShowPoint WRITE setShowPoint)
	Q_PROPERTY(bool showPointBg READ getShowPointBg WRITE setShowPointBg)

	Q_PROPERTY(QColor bgColorStart READ getBgColorStart WRITE setBgColorStart)
	Q_PROPERTY(QColor bgColorEnd READ getBgColorEnd WRITE setBgColorEnd)
	Q_PROPERTY(QColor textColor READ getTextColor WRITE setTextColor)
	Q_PROPERTY(QColor pointColor READ getPointColor WRITE setPointColor)

public:
    explicit VWaveChart(
		QWidget* parent, 
		const QPoint& pos,
		const QSize& size,
		CONTROL_PROPERTY* pProperty = nullptr
	);

protected:
	void paintEvent(QPaintEvent *);
	void drawBg(QPainter *painter);
	void drawBox(QPainter *painter);
	void drawText(QPainter *painter);
	void drawTitle(QPainter *painter);
	void drawPoint(QPainter *painter);

private slots:
	void updateData();

private:
    QRectF pointRect;               //绘制数据区域
    QVector<double> listData;       //数据集合

    double minValue;                //最小值
    double maxValue;                //最大值
    double xStep;                   //x轴步长
    double yStep;                   //y轴步长

    double space;                   //间隔
    QString title;                  //标题
    bool smooth;                    //是否平滑
    bool showHLine;                 //是否显示横线
    bool showPoint;                 //是否显示坐标点
    bool showPointBg;               //是否显示坐标背景

    QColor bgColorStart;            //背景渐变开始颜色
    QColor bgColorEnd;              //背景渐变结束颜色
    QColor textColor;               //文字颜色
    QColor pointColor;              //坐标点颜色

public:
	double getMinValue()            const;
	double getMaxValue()            const;
	double getXStep()               const;
	double getYStep()               const;

	double getSpace()               const;
	QString getTitle()              const;
    bool getSmooth()                const;
    bool getShowHLine()             const;
	bool getShowPoint()             const;
	bool getShowPointBg()           const;

	QColor getBgColorStart()        const;
	QColor getBgColorEnd()          const;
	QColor getTextColor()           const;
	QColor getPointColor()          const;

	QSize sizeHint()                const;
	QSize minimumSizeHint()         const;

public Q_SLOTS:
	//添加和设置数据数据
	void addData(double data);
	void setData(QVector<double> data);
	void clearData();

	//设置范围值及步长
	void setMinValue(double minValue);
	void setMaxValue(double maxValue);
	void setXStep(double xStep);
	void setYStep(double yStep);

	//设置间隔
	void setSpace(double space);
	//设置标题
	void setTitle(const QString &title);
    //设置是否平滑曲线
    void setSmooth(bool smooth);
	//设置显示横线
	void setShowHLine(bool showHLine);
	//设置显示坐标点
	void setShowPoint(bool showPoint);
	//设置显示坐标背景
	void setShowPointBg(bool showPointBg);

	//设置颜色
	void setBgColorStart(const QColor &bgColorStart);
	void setBgColorEnd(const QColor &bgColorEnd);
	void setTextColor(const QColor &textColor);
	void setPointColor(const QColor &pointColor);
};

#endif // WAVECHART_H