/// <summary>
/// 获取指定项在X轴的坐标值
/// </summary>
/// <param name="item">目标项</param>
/// <returns>指定项在X轴的坐标值</returns>
internal double GetX(IChartItem item)
{
var result = this.PrimitiveGetX(item);
result += this._axisCanvas.Margin.Left;
return(result);
}
private double GetAxis(IChartItem item, bool x, double axisSize)
{
if (this._axisData == null)
{
return(double.NaN);
}
object obj = ChartHelper.GetChartItemAxisValue(item, x);
if (item == null)
{
return(double.NaN);
}
double value = ChartHelper.ConvertToDouble(obj);
if (!ChartHelper.DoubleHasValue(value))
{
return(double.NaN);
}
double result = axisSize * (value - this._axisData.MinValue) / this._axisData.Area;
if (base.Orientation == AxisLabelOrientation.BottomToTop ||
base.Orientation == AxisLabelOrientation.RightToLeft)
{
result = axisSize - result;
}
return(result);
}
/// <summary>
/// 获取IChartItem中坐标轴的值
/// </summary>
/// <param name="item">目标项</param>
/// <param name="x">X轴为true;Y轴为false</param>
/// <returns>IChartItem中坐标轴的值</returns>
public static object GetChartItemAxisValue(IChartItem item, bool x)
{
if (item == null)
{
return(null);
}
;
object value;
if (item is IChartAxisValue)
{
var chartAxisValue = (IChartAxisValue)item;
if (x)
{
value = chartAxisValue.GetXValue();
}
else
{
value = chartAxisValue.GetYValue();
}
}
else if (item is IChartChildValue)
{
value = ((IChartChildValue)item).GetValue();
}
else
{
throw new NotSupportedException($"类型{item.GetType().FullName}未实现{nameof(IChartValue)}或{nameof(IChartChildValue)}接口");
}
return(value);
}
private double GetAxis(IChartItem item, bool x, double axisSize)
{
if (this._axisData == null)
{
return(double.NaN);
}
object obj = ChartHelper.GetChartItemAxisValue(item, x);
if (item == null)
{
return(double.NaN);
}
DateTime?value = ChartHelper.ConvertToDateTime(obj);
if (value == null)
{
return(double.NaN);
}
//计算AxisOrientation.LeftToRight或TopToBottom
double result = axisSize * (value.Value - this._axisData.MinValue).TotalMilliseconds / this._axisData.Area.TotalMilliseconds;
if (base.Orientation == AxisLabelOrientation.RightToLeft ||
base.Orientation == AxisLabelOrientation.BottomToTop)
{
result = axisSize - result;
}
return(result);
}
private double GetAxis(IChartItem item, bool x)
{
if (item == null || !(item is IChartAxisValue))
{
return(double.NaN);
}
var chartAxisValue = (IChartAxisValue)item;
object labelAxisItem;
if (x)
{
labelAxisItem = chartAxisValue.GetXValue();
}
else
{
labelAxisItem = chartAxisValue.GetYValue();
}
if (labelAxisItem == null)
{
labelAxisItem = this._nullLabelAxisItem;
}
LabelSeriesItem labelSeriesItem;
if (!this._axisData.TryGetValue(labelAxisItem, out labelSeriesItem))
{
return(double.NaN);
}
double result;
if (labelSeriesItem.TryGetValue(chartAxisValue, out result))
{
return(result);
}
return(double.NaN);
}
public ProductRepository(IProduct p, IChartItem CI)
{
prod = p;
ci = CI;
}
/// <summary>
/// 获取指定项在Y轴的坐标值
/// </summary>
/// <param name="item">目标项</param>
/// <returns>指定项在Y轴的坐标值</returns>
protected override double PrimitiveGetY(IChartItem item)
{
return(this.GetAxis(item, false, base._axisCanvas.Height));
}
/// <summary>
/// 获取指定项在X轴的坐标值
/// </summary>
/// <param name="item">目标项</param>
/// <returns>指定项在X轴的坐标值</returns>
protected override double PrimitiveGetX(IChartItem item)
{
return(this.GetAxis(item, true, base._axisCanvas.Width));
}
/// <summary>
/// 获取指定项在Y轴的坐标值
/// </summary>
/// <param name="item">目标项</param>
/// <returns>指定项在Y轴的坐标值</returns>
protected override double PrimitiveGetY(IChartItem item)
{
return(this.GetAxis(item, false));
}
/// <summary> /// 获取指定项在Y轴的坐标值 /// </summary> /// <param name="item">目标项</param> /// <returns>指定项在Y轴的坐标值</returns> protected abstract double PrimitiveGetY(IChartItem item);
