public void CreateGraphicsLayer()
{
#region Create GraphicsLayer
var map = MapView.Active.Map;
if (map.MapType != MapType.Map)
{
return;// not 2D
}
var gl_param = new GraphicsLayerCreationParams {
Name = "Graphics Layer"
};
QueuedTask.Run(() =>
{
//By default will be added to the top of the TOC
var graphicsLayer = LayerFactory.Instance.CreateLayer <ArcGIS.Desktop.Mapping.GraphicsLayer>(gl_param, map);
//Add to the bottom of the TOC
LayerFactory.Instance.CreateLayer <ArcGIS.Desktop.Mapping.GraphicsLayer>(gl_param, map,
LayerPosition.AddToBottom);
//Add a graphics layer to a group layer...
var group_layer = map.GetLayersAsFlattenedList().OfType <GroupLayer>().First();
LayerFactory.Instance.CreateLayer <ArcGIS.Desktop.Mapping.GraphicsLayer>(gl_param, group_layer);
//TODO...use the graphics layer
});
#endregion
}
protected override Task OnToolActivateAsync(bool hasMapViewChanged)
{
// Check if the current map is available and a 2D map.
Map map = MapView.Active.Map;
if (map.MapType != MapType.Map)
{
// Map isn't a 2d map.
return(null);
}
QueuedTask.Run(() =>
{
FieldOfJoy = map.Layers.FirstOrDefault(item => item.GetType() == typeof(GraphicsLayer) && item.Name == "Boter Kaas en Eieren") as GraphicsLayer;
if (FieldOfJoy == null)
{
// Create a grapics layer
GraphicsLayerCreationParams gl_param = new GraphicsLayerCreationParams {
Name = "Boter Kaas en Eieren"
};
// By default will be added to the top of the TOC
FieldOfJoy = LayerFactory.Instance.CreateLayer <GraphicsLayer>(gl_param, map);
}
// Get the centre
var x = MapView.Active.GetViewSize().Width / 2;
var y = MapView.Active.GetViewSize().Height / 2;
CreatePlayField(new System.Windows.Point(x, y), FieldOfJoy);
});
return(base.OnToolActivateAsync(hasMapViewChanged));
}
protected override void OnClick()
{
GroupLayer selectedGroupLayer = null;
//If one group layer is selected, then add graphics layer to that one layer
if (MapView.Active.GetSelectedLayers().Count == 1)
{
selectedGroupLayer = MapView.Active.GetSelectedLayers()[0] as GroupLayer;
}
var graphicsLayerCreationParams = new GraphicsLayerCreationParams {
Name = "Graphics Layer"
};
QueuedTask.Run(() => {
if (selectedGroupLayer != null)
{
LayerFactory.Instance.CreateLayer <GraphicsLayer>(graphicsLayerCreationParams, selectedGroupLayer,
LayerPosition.AutoArrange);
}
if (selectedGroupLayer == null)
{
LayerFactory.Instance.CreateLayer <GraphicsLayer>(graphicsLayerCreationParams, MapView.Active.Map,
LayerPosition.AutoArrange);
}
});
}
private async void CheckAndCreateGraphicLayer()
{
var map = MapView.Active.Map;
if (map.MapType != MapType.Map)
{
return; // not 2D
}
if (this._PolygonGraphicsLayer == null) //is that null?
{
//find in the current map
this._PolygonGraphicsLayer = map.GetLayersAsFlattenedList().OfType <GraphicsLayer>().FirstOrDefault(x => x.Name.Equals(_graphicLayerName, StringComparison.OrdinalIgnoreCase));
if (this._PolygonGraphicsLayer == null) // if it is not existing layer in the map
{
var gl_param = new GraphicsLayerCreationParams {
Name = _graphicLayerName
};
await QueuedTask.Run(() =>
{
this._PolygonGraphicsLayer = LayerFactory.Instance.CreateLayer <GraphicsLayer>(gl_param, map);
});
this._PolygonGraphicsLayer.PropertyChanged += _PolygonGraphicsLayer_PropertyChanged;
}
}
}
