/// <summary>
/// Initializes a new instance of the <see cref="FeatureSpyViewModel"/>.
/// <param name="feature">The feature to represent.</param>
/// <param name="layer">The layer from which the feature originated.</param>
/// </summary>
public FeatureSpyViewModel(IFeature feature, ILayer layer)
{
_feature = feature;
_layer = layer;
ColumnValues = new List <ColumnInfoViewModel>();
JumpToLayerCommand = new RelayCommand(JumpToLayer);
SelectFeatureCommand = new RelayCommand(SelectFeature);
// Analyse the feature
if (feature != null)
{
WorkspaceName = ArcobjWorkspaceUtils.GetWorkspaceName(_feature);
TableName = ArcobjWorkspaceUtils.GetTableName(_feature.Table);
ObjectId = _feature.OID;
object globalId = ArcobjWorkspaceUtils.GetIdFromRow(_feature, true);
if (globalId is string)
{
GlobalId = globalId.ToString();
}
else
{
GlobalId = string.Empty;
}
FillColumnValues(ColumnValues, _feature);
}
if (_layer != null)
{
LayerName = _layer.Name;
}
}
private static LayerInfoViewModel LoadLayerInfoFromArcMap(IFeatureLayer layer)
{
// tablename
IDataset dataset = (IDataset)layer.FeatureClass;
string tableName = ArcobjWorkspaceUtils.GetTableName(dataset);
IFeatureLayerDefinition layerDefinition = layer as IFeatureLayerDefinition;
string filter = layerDefinition?.DefinitionExpression;
int?[] rowCounts =
{
ArcmapLayerUtils.GetFilteredLayerRowCount(layer),
ArcmapLayerUtils.GetLayerRowCount(layer)
};
return(new LayerInfoViewModel
{
Title = layer.Name,
Layer = layer,
TableName = tableName,
Filter = filter,
RowCount = string.Join(" / ", rowCounts.Where(item => item != null)),
});
}
private void CreateLabels()
{
if (Layer is IGeoFeatureLayer geoFeatureLayer)
{
const double TextSizePt = 9.0;
const double GoodLookingScale = 500.0;
double referenceScale = ArcmapUtils.GetReferenceScale(GoodLookingScale);
string tableName = ArcobjWorkspaceUtils.UnqualifyTableName(ArcobjWorkspaceUtils.GetTableName(geoFeatureLayer.FeatureClass as IDataset));
string oidFieldName = geoFeatureLayer.FeatureClass.OIDFieldName;
string globalIdFieldName = ArcobjWorkspaceUtils.GetGlobalIdFieldName(geoFeatureLayer.FeatureClass as ITable);
string expression = FormatLabelExpression(tableName, oidFieldName, globalIdFieldName);
ITextSymbol textSymbol = new TextSymbolClass();
textSymbol.Color = ArcmapLayerUtils.DetectLayerMainColor(geoFeatureLayer);
textSymbol.Size = TextSizePt / referenceScale * GoodLookingScale;
// Remove existing annotations
geoFeatureLayer.DisplayAnnotation = false;
geoFeatureLayer.AnnotationProperties.Clear();
IAnnotateLayerProperties annotateLayerProperties = new LabelEngineLayerPropertiesClass();
annotateLayerProperties.UseOutput = true;
annotateLayerProperties.LabelWhichFeatures = esriLabelWhichFeatures.esriVisibleFeatures;
annotateLayerProperties.CreateUnplacedElements = true;
ILabelEngineLayerProperties2 labelEngineProperties = (ILabelEngineLayerProperties2)annotateLayerProperties;
labelEngineProperties.ExpressionParser = new AnnotationVBScriptEngineClass();
labelEngineProperties.Expression = expression;
labelEngineProperties.Symbol = textSymbol;
IBasicOverposterLayerProperties overposterProperties = labelEngineProperties.BasicOverposterLayerProperties;
overposterProperties.GenerateUnplacedLabels = true;
overposterProperties.NumLabelsOption = esriBasicNumLabelsOption.esriOneLabelPerShape;
overposterProperties.PointPlacementOnTop = true;
overposterProperties.PointPlacementMethod = esriOverposterPointPlacementMethod.esriSpecifiedAngles;
overposterProperties.PointPlacementAngles = new[] { 30.0 };
overposterProperties.LineLabelPosition = CreateLineLabelPosition();
if (labelEngineProperties.OverposterLayerProperties is IOverposterLayerProperties2 overposterProperties2)
{
overposterProperties2.TagUnplaced = false; // The "place overlapping labels" option
}
// Show new annotation in map
geoFeatureLayer.AnnotationProperties.Add(annotateLayerProperties);
geoFeatureLayer.DisplayAnnotation = true;
ArcmapUtils.InvalidateMap(ArcmapUtils.GetFocusMap());
}
}