using System.Collections.Generic;
using System.Windows;
using MuchInfo.Chart.Data.EnumTypes;

namespace MuchInfo.Chart.WPF.Primitives.Interfaces
{
    #region Delegates

    public delegate void ScalePropertiesChangedEventHandler();

    #endregion Delegates

    public interface IValueScaler
    {
        #region Events

        event ScalePropertiesChangedEventHandler ScalePropertiesChanged;

        #endregion Events

        #region Properties

        bool Inverse
        {
            get;
            set;
        }

        #endregion Properties

        #region Methods

        void CalculateScale(List<PlotBase> plots, IDateScaler scaler, bool isTimeSpaning);

        float PercentFromValue(float aVal);

        float PercentFromValueDisplay(float aVal);

        float ScaledY(float aVal, Rect aRect);


        float Spread();

        float ValueFromPercent(float aPercent);

        float ValueFromPercentDisplay(float aPercent);

        float ValueFromY(float aY, Rect aRect);

        float YFromPercent(float aPercent, Rect aRect);

        float GetMaxValue();

        float GetMinValue();

        bool ShowScaleAsPercent { get; set; }

        float GetPercentBaseline();


        /// <summary>
        /// 设置是否显示分时图
        /// </summary>
        bool IsTimeSpaning
        {
            get;
            set;
        }

        /// <summary>
        /// 显示分时图中昨收价
        /// </summary>
        float TimeSpaningLast { get; set; }

        #endregion Methods
    }
}