//public async void drawToolsClickEventListener(object sender,
// UserControl.DrawToolClickEventArgs args)
//{
// if (args.stopDraw)
// {
// if (_mapView.Editor.Cancel.CanExecute(null))
// _mapView.Editor.Cancel.Execute(null);
// }
// else
// {
// await drawGraphics(args.drawShapeType);
// }
//}
public async Task drawGraphics(DrawShapeType drawShapeType)
{
if (Globals.isThreadUnsafe())
{
await Globals.application.Dispatcher.Invoke(new Func <Task>(async() =>
{
await drawGraphics(drawShapeType);
}));
return;
}
// Add a drawing graphics layer
if (_drawingLayer == null)
{
_drawingLayer = new IS3GraphicsLayer();
_drawingLayer.ID = "0";
_drawingLayer.DisplayName = "0";
_map.Layers.Add(_drawingLayer);
}
if (_mapView.Editor.IsActive)
{
return;
}
try
{
Geometry geom = await _mapView.Editor.RequestShapeAsync((DrawShape)drawShapeType);
if (_srEMap != null)
{
geom = GeometryEngine.Project(geom, _srEMap);
}
IGeometry iGeom = IS3GeometryEngine.fromGeometry(geom);
IGraphic g = Runtime.graphicEngine.newGraphic(iGeom);
GraphicsUtil.AssignDefaultDrawingSymbol(g);
_drawingLayer.graphics.Add(g);
// trigger a drawing graphics changed event
if (drawingGraphicsChangedTrigger != null)
{
DrawingGraphicsChangedEventArgs args =
new DrawingGraphicsChangedEventArgs();
List <IGraphic> addedItems = new List <IGraphic>();
addedItems.Add(g);
args.addedItems = addedItems;
drawingGraphicsChangedTrigger(this, args);
}
}
catch (TaskCanceledException)
{
// Ignore TaskCanceledException - usually happens if the editor gets cancelled or restarted
}
}