// Summary:
// Generate a label attributes according to the definition
// which is specified in the LayerDef
//
AttributeLabelClass generateLayerAttributeLable(LayerDef layerDef,
Core.Geometry.GeometryType geometryType)
{
if (layerDef == null)
return generateDefaultLayerAttributeLable(geometryType);
IS3SymbolFont font = new IS3SymbolFont(
layerDef.LabelFontFamily, layerDef.LabelFontSize);
font.FontStyle = layerDef.LabelFontStyle;
font.FontWeight = layerDef.LabelFontWeight;
font.TextDecoration = layerDef.LabelTextDecoration;
IS3TextSymbol textSymbol = new IS3TextSymbol();
textSymbol.Color = layerDef.LabelColor;
textSymbol.Font = font;
textSymbol.BorderLineColor = layerDef.LabelBorderLineColor;
textSymbol.BorderLineSize = layerDef.LabelBorderLineWidth;
textSymbol.BackgroundColor = layerDef.LabelBackgroundColor;
AttributeLabelClass labelClass = new AttributeLabelClass();
labelClass.IsVisible = true;
labelClass.TextExpression = layerDef.LabelTextExpression;
labelClass.WhereClause = layerDef.LabelWhereClause;
labelClass.Symbol = textSymbol;
if (geometryType == Core.Geometry.GeometryType.Polygon)
labelClass.LabelPlacement = LabelPlacement.PolygonAlwaysHorizontal;
return labelClass;
}
// Summary:
// Set the GraphicsLayer display options according to the definition
// which is specified in the LocalELayer.
// The display options include selection color, renderer, and labelling
//
void setGraphicLayerDisplayOptions(LayerDef layerDef, IS3GraphicsLayer gLayer)
{
if (layerDef == null || gLayer == null)
return;
gLayer.IsVisible = layerDef.IsVisible;
gLayer.SelectionColor = layerDef.SelectionColor;
if (layerDef.RendererDef == null)
{
ISymbol symbol = GraphicsUtil.GenerateLayerSymbol(layerDef, gLayer.geometryType);
gLayer.renderer = Runtime.graphicEngine.newSimpleRenderer(symbol);
}
else
{
gLayer.renderer = Runtime.graphicEngine.newRenderer(layerDef.RendererDef);
}
if (layerDef.EnableLabel == true)
{
AttributeLabelClass labelClass = generateLayerAttributeLable(layerDef, gLayer.geometryType);
gLayer.Labeling.LabelClasses.Add(labelClass);
}
}
// Summary:
// Add a layer in a shape file
// The name of the layer and display options are specified in the LocalELayer
//
public async Task<IGraphicsLayer> addShpLayer(LayerDef layerDef,
string shpFile, int start = 0, int maxFeatures = 0)
{
if (layerDef == null || shpFile == null)
return null;
string filePath = _prj.projDef.LocalFilePath + "\\" + shpFile;
if (File.Exists(filePath))
{
ShapefileTable table = await ShapefileTable.OpenAsync(filePath);
if (table == null)
return null;
IS3GraphicsLayer gLayer = await featureTable2GraphicsLayer(
table, start, maxFeatures, true);
if (gLayer == null)
return null;
gLayer.ID = layerDef.Name;
setGraphicLayerDisplayOptions(layerDef, gLayer);
_map.Layers.Add(gLayer);
return gLayer;
}
return null;
}
public async Task<IGraphicsLayer> addGdbLayer(LayerDef eLayer,
string dbFile, int start = 0, int maxFeatures = 0)
{
if (dbFile == null)
dbFile = _eMap.LocalGeoDbFileName;
string filePath = _prj.projDef.LocalFilePath + "\\" + dbFile;
if (File.Exists(filePath))
{
Geodatabase gdb = await Geodatabase.OpenAsync(filePath);
IGraphicsLayer gLayer = await addGeodatabaseLayer(
eLayer, gdb, start, maxFeatures);
return gLayer;
}
return null;
}
// Summary:
// Add a layer in a geodatabase (aka. local layer)
// The name of the layer and display options are specified in the LocalELayer
//
public async Task<IGraphicsLayer> addGeodatabaseLayer(LayerDef layerDef,
Geodatabase gdb, int start = 0, int maxFeatures = 0)
{
if (layerDef == null || gdb == null)
return null;
GeodatabaseFeatureTable table =
gdb.FeatureTables.FirstOrDefault(t => t.Name == layerDef.Name);
if (table == null)
return null;
IS3GraphicsLayer gLayer = await featureTable2GraphicsLayer(
table, start, maxFeatures, false);
if (gLayer == null)
return null;
gLayer.ID = layerDef.Name;
gLayer.MinScale = table.ServiceInfo.MinScale;
gLayer.MaxScale = table.ServiceInfo.MaxScale;
setGraphicLayerDisplayOptions(layerDef, gLayer);
_map.Layers.Add(gLayer);
return gLayer;
}
public Task<IGraphicsLayer> addShpLayer(LayerDef layerDef,
string shpFile, int start = 0, int maxFeatures = 0)
{
return null;
}
