private void PrimitiveGetMinAndMaxValue(AxisAbs axis, ValueCollection values, out double min, out double max)
{
min = double.NaN;
max = double.NaN;
if (values == null || values.Count == 0)
{
return;
}
double pre = double.IsNaN(axis.PRE) ? ChartConstant.ZERO_D : axis.PRE;
IChartAxisValue chartAxisValue;
IChartAxisDoubleValue doubleValue;
foreach (var value in values)
{
chartAxisValue = value as IChartAxisValue;
if (chartAxisValue == null)
{
doubleValue = value as IChartAxisDoubleValue;
if (doubleValue != null)
{
this.GetIChartAxisDoubleValueMinAndMax(axis, doubleValue, ref pre, ref min, ref max);
}
}
else
{
this.GetIChartAxisValueMinAndMax(axis, chartAxisValue, ref pre, ref min, ref max);
}
}
}
private void GetIChartAxisValueMinAndMax(AxisAbs axis, IChartAxisValue chartAxisValue, ref double pre, ref double min, ref double max)
{
object obj;
switch (axis.AxisType)
{
case AxisType.X:
obj = chartAxisValue.GetXValue();
break;
case AxisType.Y:
obj = chartAxisValue.GetYValue();
break;
default:
throw new NotImplementedException(axis.AxisType.ToString());
}
if (obj == null)
{
return;
}
if (obj is IEnumerable)
{
this.GetCollectionMinAndMax(obj, ref pre, ref min, ref max);
}
else
{
this.GetMinAndMax(obj, ref pre, ref min, ref max);
}
}
/// <summary>
/// 创建坐标轴Label控件
/// </summary>
/// <param name="axis">坐标轴</param>
/// <param name="labelText">标签文本</param>
/// <returns>Label控件</returns>
public static TextBlock CreateLabelControl(AxisAbs axis, string labelText)
{
var textBlock = new TextBlock();
textBlock.Text = labelText;
if (axis.LabelStyle == null)
{
textBlock.Style = ChartStyleHelper.GetAxisLabelStyle(axis.DockOrientation);
}
else
{
textBlock.Style = axis.LabelStyle;
}
return(textBlock);
}
private void GetIChartAxisDoubleValueMinAndMax(AxisAbs axis, IChartAxisDoubleValue doubleValue, ref double pre, ref double min, ref double max)
{
switch (axis.AxisType)
{
case AxisType.X:
this.PrimitiveGetIChartAxisDoubleValueMinAndMax(doubleValue.GetXValue1(), ref pre, ref min, ref max);
this.PrimitiveGetIChartAxisDoubleValueMinAndMax(doubleValue.GetXValue2(), ref pre, ref min, ref max);
break;
case AxisType.Y:
this.PrimitiveGetIChartAxisDoubleValueMinAndMax(doubleValue.GetYValue1(), ref pre, ref min, ref max);
this.PrimitiveGetIChartAxisDoubleValueMinAndMax(doubleValue.GetYValue2(), ref pre, ref min, ref max);
break;
default:
throw new NotImplementedException(axis.AxisType.ToString());
}
}
/// <summary>
/// 绘制X轴坐标刻度线
/// </summary>
/// <param name="axis">X轴坐标</param>
/// <param name="canvas">画布</param>
/// <param name="x1">第一个X</param>
/// <param name="x2">第二个X</param>
public static void DrawXAxisLabelLine(AxisAbs axis, Canvas canvas, double x1, double x2)
{
if (!axis.DrawAxisLine || !DoubleHasValue(x1) || !DoubleHasValue(x2))
{
return;
}
var labelLinePath = new Path();
labelLinePath.Style = axis.AxisLineStyle;
if (labelLinePath.Style == null)
{
labelLinePath.Style = ChartStyleHelper.GetDefaultAxisLabelLineStyle();
}
Point point1, point2;
if (axis.IsAxisXBottom())
{
point1 = new Point(ChartConstant.ZERO_D, ChartConstant.ZERO_D);
point2 = new Point(canvas.Width, ChartConstant.ZERO_D);
}
else
{
point1 = new Point(ChartConstant.ZERO_D, canvas.Height);
point2 = new Point(canvas.Width, canvas.Height);
}
PathFigure labelPathFigure = new PathFigure();
labelPathFigure.StartPoint = point1;
labelPathFigure.Segments.Add(new LineSegment(point2, true));
labelLinePath.Data = new PathGeometry()
{
Figures = new PathFigureCollection(new PathFigure[] { labelPathFigure })
};
canvas.Children.Add(labelLinePath);
}
/// <summary>
/// 测量标签文本大小
/// </summary>
/// <param name="axis">坐标轴</param>
/// <param name="labelText">标签文本</param>
/// <returns>标签文本大小</returns>
public static Size MeasureLabelTextSize(AxisAbs axis, string labelText)
{
if (_measureTextLabel == null)
{
_measureTextLabel = new TextBlock();
}
TextBlock measureTextLabel = _measureTextLabel;
measureTextLabel.Text = labelText;
if (axis.LabelStyle == null)
{
measureTextLabel.Style = ChartStyleHelper.GetAxisLabelStyle(axis.DockOrientation);
}
else
{
measureTextLabel.Style = axis.LabelStyle;
}
var size = UITextHelper.MeasureTextSize(measureTextLabel);
measureTextLabel.Style = null;
return(size);
}
/// <summary>
/// 绘制Y轴坐标刻度线
/// </summary>
/// <param name="axis">Y轴坐标</param>
/// <param name="canvas">画布</param>
/// <param name="yList">Y轴刻度集合</param>
public static void DrawYAxisLabelLine(AxisAbs axis, Canvas canvas, List <double> yList)
{
if (!axis.DrawAxisLine || yList == null || yList.Count == 0)
{
return;
}
var labelLinePath = new Path();
labelLinePath.Style = axis.AxisLineStyle;
if (labelLinePath.Style == null)
{
labelLinePath.Style = ChartStyleHelper.GetDefaultAxisLabelLineStyle();
}
GeometryGroup geometryGroup = new GeometryGroup();
Point point1, point2;
double y;
int lastIndex = yList.Count - 1;
for (int i = 0; i < yList.Count; i++)
{
y = yList[i];
if (axis.IsAxisYLeft())
{
point1 = new Point(canvas.Width - axis.LabelSize, y);
point2 = new Point(canvas.Width, y);
}
else
{
point1 = new Point(ChartConstant.ZERO_D, y);
point2 = new Point(axis.LabelSize, y);
}
PathFigure labelPathFigure = new PathFigure();
labelPathFigure.StartPoint = point1;
labelPathFigure.Segments.Add(new LineSegment(point2, true));
geometryGroup.Children.Add(new PathGeometry()
{
Figures = new PathFigureCollection(new PathFigure[] { labelPathFigure })
});
}
//坐标轴
if (axis.IsAxisYLeft())
{
point1 = new Point(canvas.Width, yList.First());
point2 = new Point(canvas.Width, yList.Last());
}
else
{
point1 = new Point(ChartConstant.ZERO_D, yList.First());
point2 = new Point(ChartConstant.ZERO_D, yList.Last());
}
PathFigure axisPathFigure = new PathFigure();
axisPathFigure.StartPoint = point1;
axisPathFigure.Segments.Add(new LineSegment(point2, true));
geometryGroup.Children.Add(new PathGeometry()
{
Figures = new PathFigureCollection(new PathFigure[] { axisPathFigure })
});
labelLinePath.Data = geometryGroup;
canvas.Children.Add(labelLinePath);
}