public StripChartXPlotArea GetHitPlotArea(HitTestResult result)
{
ChartElementType hitObject = result.ChartElementType;
ChartArea hitChartArea = result.ChartArea;
if (null == hitChartArea || (hitObject != ChartElementType.PlottingArea &&
hitObject != ChartElementType.Gridlines && hitObject != ChartElementType.StripLines &&
hitObject != ChartElementType.DataPoint && hitObject != ChartElementType.Axis))
{
return(null);
}
StripChartXPlotArea hitPlotArea = null;
if (ReferenceEquals(MainPlotArea.ChartArea, hitChartArea))
{
hitPlotArea = MainPlotArea;
}
else
{
int plotAreaIndex = SplitPlotAreas.FindIndexByBaseChartArea(hitChartArea);
if (plotAreaIndex >= 0 && plotAreaIndex < SplitPlotAreas.Count)
{
hitPlotArea = SplitPlotAreas[plotAreaIndex];
}
}
return(hitPlotArea);
}
private double GetMinYInterval(StripChartXPlotArea plotArea)
{
if (double.IsNaN(plotArea.AxisY.Maximum) || double.IsNaN(plotArea.AxisY.Minimum))
{
return(1E-3);
}
return((plotArea.AxisY.Maximum - plotArea.AxisY.Minimum) / Constants.AutoYIntervalPrecision);
}
public void RefreshAxesRange(StripChartXPlotArea plotArea)
{
if (ReferenceEquals(MainPlotArea, plotArea))
{
AdaptMainPlotAreaAxesRange();
}
else
{
int areaIndex = SplitPlotAreas.IndexOf(plotArea);
if (areaIndex >= 0)
{
AdaptSplitPlotAreaAxesRange(areaIndex);
}
}
}
public void GetMaxAndMinYValue(StripChartXPlotArea plotArea, out double maxYValue, out double minYValue,
int seriesIndex)
{
maxYValue = double.NaN;
minYValue = double.NaN;
double tmpMaxYValue, tmpMinYValue;
if (seriesIndex <= -1)
{
AxisType yAxisType = PlotSeries[0].YAxisType;
// 所有的类型都相同则计算全局最大值
if (PlotSeries.All(item => item.YAxisType == yAxisType))
{
DataEntity.GetMaxAndMinYValue(out maxYValue, out minYValue);
}
else
{
maxYValue = double.MinValue;
minYValue = double.MaxValue;
for (int index = 0; index < PlotSeries.Count; index++)
{
if (PlotSeries[index].YAxisType != AxisType.Primary)
{
continue;
}
DataEntity.GetMaxAndMinYValue(index, out tmpMaxYValue, out tmpMinYValue);
if (tmpMaxYValue > maxYValue)
{
maxYValue = tmpMaxYValue;
}
if (tmpMinYValue < minYValue)
{
minYValue = tmpMinYValue;
}
}
if (Math.Abs(double.MaxValue - maxYValue) < Constants.MinDoubleValue)
{
maxYValue = double.NaN;
minYValue = double.NaN;
}
}
}
else
{
// 无论是副坐标轴还是主坐标轴，都给主坐标轴赋最大值
DataEntity.GetMaxAndMinYValue(seriesIndex, out maxYValue, out minYValue);
}
}
public PositionAdapter(Chart baseChart, StripChartXPlotArea plotArea)
{
this._baseChart = baseChart;
this._chartArea = plotArea;
ChartArea chartArea = plotArea.ChartArea;
this._chartSize = new Size(_baseChart.Width, _baseChart.Height);
this._areaPosition = new ElementPosition(chartArea.Position.X, chartArea.Position.Y,
chartArea.Position.Width, chartArea.Position.Height);
this._plotPosition = new ElementPosition(chartArea.InnerPlotPosition.X, chartArea.InnerPlotPosition.Y,
chartArea.InnerPlotPosition.Width, chartArea.InnerPlotPosition.Height);
this._maxX = chartArea.AxisX.ScaleView.ViewMaximum;
this._minX = chartArea.AxisX.ScaleView.ViewMinimum;
CalculatePointPosition();
}
public void GetMaxAndMinY2Value(StripChartXPlotArea plotArea, out double maxYValue, out double minYValue,
int seriesIndex)
{
maxYValue = double.NaN;
minYValue = double.NaN;
// 副坐标轴没有数据则返回
if (!HasSeriesInYAxis(plotArea, StripChartXAxis.PlotAxis.Secondary))
{
return;
}
double tmpMaxYValue, tmpMinYValue;
if (seriesIndex <= -1)
{
maxYValue = double.MinValue;
minYValue = double.MaxValue;
for (int index = 0; index < PlotSeries.Count; index++)
{
if (PlotSeries[index].YAxisType != AxisType.Secondary)
{
continue;
}
DataEntity.GetMaxAndMinYValue(index, out tmpMaxYValue, out tmpMinYValue);
if (tmpMaxYValue > maxYValue)
{
maxYValue = tmpMaxYValue;
}
if (tmpMinYValue < minYValue)
{
minYValue = tmpMinYValue;
}
}
if (Math.Abs(double.MaxValue - maxYValue) < Constants.MinDoubleValue)
{
maxYValue = double.NaN;
minYValue = double.NaN;
}
}
else
{
DataEntity.GetMaxAndMinYValue(seriesIndex, out maxYValue, out minYValue);
}
}
public bool HasSeriesInYAxis(StripChartXPlotArea plotArea, StripChartXAxis.PlotAxis plotAxis)
{
return(PlotSeries.Any(item => item.ChartArea.Equals(plotArea.Name) && item.YAxisType == (AxisType)plotAxis));
}
