/// <summary>
/// Creates a new instance of a LabelLayer with the given name.
/// </summary>
/// <param name="layerName">Name of the layer.</param>
/// <param name="dataSource">Data source provider for the layer.</param>
public LabelLayer(string layerName, IFeatureLayerProvider dataSource)
: base(layerName, dataSource)
{
_multipartGeometryBehaviour = MultipartGeometryLabelingBehavior.Default;
_labelFilter = LabelCollisionDetection2D.SimpleCollisionDetection;
}
/// <summary>
/// Initializes a new features layer with the given name, style and datasource
/// and which handles <see cref="FeatureDataTable.FeaturesRequested"/>
/// events from <see cref="Features"/>.
/// </summary>
/// <param name="layername">Name of the layer.</param>
/// <param name="style">Style to apply to the layer.</param>
/// <param name="dataSource">Data source.</param>
protected FeatureLayer(string layername, VectorStyle style, IFeatureLayerProvider dataSource)
: this(layername, style, dataSource, true) {}
/// <summary>
/// Initializes a new features layer with the given name, style and datasource.
/// </summary>
/// <param name="layername">Name of the layer.</param>
/// <param name="style">Style to apply to the layer.</param>
/// <param name="dataSource">Data source.</param>
/// <param name="handleFeatureDataRequest">
/// Value to indicate the layer should handle
/// <see cref="FeatureDataTable.FeaturesRequested"/> events from the <see cref="Features"/>
/// table.
/// </param>
protected FeatureLayer(string layername, VectorStyle style, IFeatureLayerProvider dataSource, bool handleFeatureDataRequest)
: base(layername, style, dataSource)
{
ShouldHandleDataCacheMissEvent = handleFeatureDataRequest;
_features = new FeatureDataTable();
_selectedFeatures = new FeatureDataView(_features, Point.Empty, "", DataViewRowState.CurrentRows);
_highlightedFeatures = new FeatureDataView(_features, Point.Empty, "", DataViewRowState.CurrentRows);
if (ShouldHandleDataCacheMissEvent)
{
_features.FeaturesRequested += handleFeaturesRequested;
}
init();
}
/// <summary>
/// Initializes a new features layer with the given name and datasource.
/// </summary>
/// <param name="layername">Name of the layer.</param>
/// <param name="dataSource">Data source.</param>
/// <param name="handleFeatureDataRequest">
/// Value to indicate the layer should handle
/// <see cref="FeatureDataTable.FeaturesRequested"/> events from the <see cref="Features"/>
/// table.
/// </param>
protected FeatureLayer(string layername, IFeatureLayerProvider dataSource, bool handleFeatureDataRequest)
: this(layername, new VectorStyle(), dataSource, handleFeatureDataRequest)
{
}
/// <summary>
/// Initializes a new, empty features layer
/// which handles <see cref="FeatureDataTable.FeaturesRequested"/>
/// events from <see cref="Features"/>.
/// </summary>
protected FeatureLayer(IFeatureLayerProvider dataSource)
: this(String.Empty, dataSource)
{
}
/// <summary>
/// Initializes a new layer with the given name, style and datasource.
/// </summary>
/// <param name="layername">Name of the layer.</param>
/// <param name="style">Style to apply to the layer.</param>
/// <param name="dataSource">Data source.</param>
public GeometryLayer(string layername, VectorStyle style, IFeatureLayerProvider dataSource)
: base(layername, style, dataSource)
{
}
/// <summary>
/// Initializes a new layer with the given name and datasource.
/// </summary>
/// <param name="layername">Name of the layer.</param>
/// <param name="dataSource">Data source.</param>
public GeometryLayer(string layername, IFeatureLayerProvider dataSource)
: this(layername, new VectorStyle(), dataSource)
{
}
/// <summary>
/// Initializes a new, empty vector layer.
/// </summary>
public GeometryLayer(IFeatureLayerProvider dataSource)
: this(String.Empty, dataSource)
{
}