private void DoInit()
{
IFeatureClass fetclass = _class as IFeatureClass;
//_featureRenderer
switch (fetclass.ShapeType)
{
case enumShapeType.Point:
_featureRender = new SimpleFeatureRenderer(new SimpleMarkerSymbol());
break;
case enumShapeType.Polyline:
_featureRender = new SimpleFeatureRenderer(new SimpleLineSymbol());
break;
case enumShapeType.Polygon:
_featureRender = new SimpleFeatureRenderer(new SimpleFillSymbol());
break;
default:
throw new NotSupportedException("矢量要素层对象暂不支持\"" + fetclass.ShapeType.ToString() + "\"几何类型的数据。");
}
if ((_featureRender as BaseFeatureRenderer) != null)
{
(_featureRender as BaseFeatureRenderer)._name = _name;
}
string[] fldnames = fetclass.FieldNames;
_labelDef = new LabelDef(TryGetKeyField(fldnames, new string[] { "NAME", "名称" }), fldnames);
_rotateFieldDef = new RotateFieldDef(TryGetKeyField(fldnames, new string[] { "ANGLE", "角度" }), 0f, fldnames);
_featureRender.RotateFieldDef = _rotateFieldDef;
_isInited = true;
}
private LabelLocation[] GetLabelLocations(Feature fet, ILabelDef labelDef)
{
switch (labelDef.LabelSource)
{
case enumLabelSource.Label:
if (fet.LabelLocationService == null)
{
return(null);
}
return(fet.LabelLocationService.LabelLocations);
case enumLabelSource.Annotation:
return(fet.Annotations);
default:
return(null);
}
}
private void TryInitByFeatureClass()
{
if (_class == null)
{
_featureRender = null;
_labelDef = null;
_rotateFieldDef = null;
}
else
{
if (!(_class.DataSource as IFeatureDataSource).IsReady)
{
(_class.DataSource as FeatureDataSourceBase).TryInit();
}
if ((_class.DataSource as IFeatureDataSource).IsReady)
{
(_class as FeatureClass).GetArgsFromDataSource();
DoInit();
}
}
}
public FeatureLayer(string name, IFeatureClass fetclass, IFeatureRenderer render, ILabelDef labelDef)
: this(name, fetclass, render)
{
_labelDef = labelDef;
}
