| public GetStyle ( SharpMap row ) : SharpMap.Styles.IStyle | ||
| row | SharpMap | Feature |
| return | SharpMap.Styles.IStyle | |
public SharpMap.Styles.IStyle GetStyle(SharpMap.Data.FeatureDataRow row)
{
double attr = 0;
try { attr = Convert.ToDouble(row[this._ColumnName]); }
catch { throw new ApplicationException("Invalid Attribute type in Gradient Theme - Couldn't parse attribute (must be numerical)"); }
if (_minStyle.GetType() != _maxStyle.GetType())
throw new ArgumentException("MinStyle and MaxStyle must be of the same type");
switch (MinStyle.GetType().FullName)
{
case "SharpMap.Styles.VectorStyle":
return CalculateVectorStyle(MinStyle as VectorStyle, MaxStyle as VectorStyle, attr);
case "SharpMap.Styles.LabelStyle":
return CalculateLabelStyle(MinStyle as LabelStyle, MaxStyle as LabelStyle, attr);
default:
throw new ArgumentException("Only SharpMap.Styles.VectorStyle and SharpMap.Styles.LabelStyle are supported for the gradient theme");
}
}
public void GetStyleForNoDataValue()
{
var minVectorStyle = new VectorStyle { Fill = new SolidBrush(Color.Red) };
var maxVectorStyle = new VectorStyle { Fill = new SolidBrush(Color.Blue) };
var theme = new GradientTheme("red to blue", 10.0, 100.123, minVectorStyle, maxVectorStyle, null, null, null)
{
NoDataValues = new List<double> {12.3}
};
var result = (VectorStyle)theme.GetStyle(10.0);
AssertColor(Color.Red, ((SolidBrush)result.Fill).Color); // Expecting SolidBrush
AssertColor(Color.FromArgb(255, 138,43, 226), result.Line.Color);
result = (VectorStyle)theme.GetStyle(12.3);
AssertColor(Color.Transparent, ((SolidBrush)result.Fill).Color); // Expecting SolidBrush
AssertColor(Color.Transparent, result.Line.Color);
}
