nmWATI/Include/iPlot/iPlotBase/Helper/ZxAxisHelperFloatLog.h

#pragma once

#include "ZxAxisHelperFloat.h"

// 对数类
class I_PLOTBASE_EXPORT ZxAxisHelperFloatLog : public ZxAxisHelperFloat
{
    Q_OBJECT

public:

    static const int g_logScaleCount = 8;
    static const double g_logScaleRatios[g_logScaleCount];

public:
    explicit ZxAxisHelperFloatLog(ZxSubAxisBase* p);
    ~ZxAxisHelperFloatLog();

protected:

    // Plot网格线
    virtual void drawGrids(QPainter* painter, QRectF& rtInner);
    // 绘制函数
    virtual void drawTickAndTags(QPainter* painter, QRectF& rt);
    virtual void drawOneTickTag(QPainter* painter, double fPos, QString s);

    // 取得待显示的刻度文本标识
    virtual QMap<double, QString> getTickInfos();

    // 预估大小
    virtual QRectF getPreferedTickSumRect(QPainter* painter);
    virtual void adjustPreferedSize(double& w, double& h);

private:

    // 幂指数方式显示，10的多少次幂
    void drawOneTickTagEx(QPainter* painter, double fPos, QString s);

    // 获取绘制的位置信息
    virtual void locateOneTickTag(QPainter* painter, double fPos, QString s, \
                                  QRectF& rt, int& flag);
    // 获取绘制的位置信息（Base）
    void locateOneTickBaseTag(QPainter* painter, double fPos, \
                              QString s, \
                              QRectF& rtBase, \
                              int& flag);
    // 获取绘制的位置信息（Index）
    void locateOneTickIndexTag(QPainter* painter, double fPos, \
                               QString s, \
                               QRectF& rtBase, QRectF& rtIndex, \
                               int& flag);
    // 进一步调整
    void adjustTickLocation(QPainter* painter, \
                            QRectF& rtBase, QRectF& rtIndex);

public slots:

protected:
};