private Dictionary <int, ILayer> ReadMapLayers(bool onlySelectedFeatures, bool onlyCurrentExtent, bool highlightedLayerOnly)
{
List <ILayer> layers = null;
if (highlightedLayerOnly)
{
if (this.MxDocument.SelectedLayer != null)
{
layers = new List <ILayer>();
if (!this.MxDocument.SelectedLayer.Is3D())
{
layers.Add(this.MxDocument.SelectedLayer);
}
}
else
{
layers = this.MxDocument.SelectedItem.ToLayerList();
}
}
else
{
layers = LayerHelper.GetLayerList(this.MxDocument.FocusMap);
}
Dictionary <int, ILayer> exportLayers = new Dictionary <int, ILayer>();
IEnvelope extent = null;
if (onlyCurrentExtent)
{
extent = this.MxDocument.ActiveView.Extent;
}
int i = 0;
foreach (ILayer layer in layers)
{
if (layer is IFeatureLayer &&
!layer.Is3D())
{
IFeatureLayer featureLayer = (IFeatureLayer)layer;
IFeatureSelection featureSelection = (IFeatureSelection)featureLayer;
bool hasSelectedFeatures = (featureSelection.SelectionSet.Count > 0);
bool visibleInCurrentExtent = false;
bool selectedVisibleInCurrentExtent = false;
if (extent != null)
{
ISpatialFilter filter = new SpatialFilterClass();
filter.Geometry = extent;
filter.SpatialRel = esriSpatialRelEnum.esriSpatialRelIntersects;
visibleInCurrentExtent = featureLayer.FeatureClass.FeatureCount(filter) > 0;
ICursor cursor;
featureSelection.SelectionSet.Search(filter, true, out cursor);
int c = 0;
while (cursor.NextRow() != null)
{
c++;
break;
}
selectedVisibleInCurrentExtent = (c > 0);
}
if (onlySelectedFeatures & onlyCurrentExtent)
{
if (selectedVisibleInCurrentExtent)
{
exportLayers.Add(++i, layer);
}
}
else if (onlySelectedFeatures & !onlyCurrentExtent)
{
if (hasSelectedFeatures)
{
exportLayers.Add(++i, layer);
}
}
else if (!onlySelectedFeatures & onlyCurrentExtent)
{
if (visibleInCurrentExtent)
{
exportLayers.Add(++i, layer);
}
}
else
{
exportLayers.Add(++i, layer);
}
}
}
return(exportLayers);
}