private void RefreshXLabels()
{
if (double.IsNaN(ViewMaximum) || double.IsNaN(ViewMinimum) ||
ViewMaximum - ViewMinimum < 1)
{
return;
}
double labelStep = (ViewMaximum - ViewMinimum) / MajorGridCount;
double labelRangeSize = labelStep / 2;
double labelPosition = ViewMinimum;
for (int i = 0; i < MajorGridCount; i++)
{
CustomLabels[i].FromPosition = labelPosition - labelRangeSize;
CustomLabels[i].ToPosition = labelPosition + labelRangeSize;
CustomLabels[i].Text = _parentChart.GetXLabelValue(labelPosition);
labelPosition += labelStep;
}
// 最后一个做特殊处理
labelPosition = ViewMaximum;
CustomLabels[MajorGridCount].FromPosition = labelPosition - labelRangeSize;
CustomLabels[MajorGridCount].ToPosition = labelPosition + labelRangeSize;
// 最后一个点使用
if (labelPosition > -1)
{
labelPosition = -1;
}
CustomLabels[MajorGridCount].Text = _parentChart.GetXLabelValue(labelPosition);
}
internal string GetXValue(int xValue)
{
return(_parentChart.GetXLabelValue(xValue));
}
