async private Task RenderSelection(IFeatureLayer fLayer, ICancelTracker cancelTracker)
{
if (fLayer == null || !(fLayer is IFeatureSelection))
{
return;
}
if (fLayer.SelectionRenderer == null)
{
return;
}
IFeatureSelection fSelection = (IFeatureSelection)fLayer;
if (fSelection.SelectionSet == null || fSelection.SelectionSet.Count == 0)
{
return;
}
RenderFeatureLayerSelection rlt = new RenderFeatureLayerSelection(this, fLayer, cancelTracker);
//rlt.Render();
//Thread thread = new Thread(new ThreadStart(rlt.Render));
//thread.Start();
DrawingLayer.BeginInvoke(fLayer.Title, new AsyncCallback(AsyncInvoke.RunAndForget), null);
await rlt.Render();
//while (thread.IsAlive)
//{
// Thread.Sleep(10);
// if (DoRefreshMapView != null && (count % 100) == 0 && cancelTracker.Continue)
// {
// DoRefreshMapView();
// }
// count++;
//}
if (cancelTracker.Continue)
{
DoRefreshMapView?.Invoke();
}
}
public override void HighlightGeometry(IGeometry geometry, int milliseconds)
{
if (geometry == null || _canvas != null)
{
return;
}
geometryType type = geometryType.Unknown;
if (geometry is IPolygon)
{
type = geometryType.Polygon;
}
else if (geometry is IPolyline)
{
type = geometryType.Polyline;
}
else if (geometry is IPoint)
{
type = geometryType.Point;
}
else if (geometry is IMultiPoint)
{
type = geometryType.Multipoint;
}
else if (geometry is IEnvelope)
{
type = geometryType.Envelope;
}
if (type == geometryType.Unknown)
{
return;
}
ISymbol symbol = null;
PlugInManager compMan = new PlugInManager();
IFeatureRenderer renderer = compMan.CreateInstance(gView.Framework.system.KnownObjects.Carto_SimpleRenderer) as IFeatureRenderer;
if (renderer is ISymbolCreator)
{
symbol = ((ISymbolCreator)renderer).CreateStandardHighlightSymbol(type);
}
if (symbol == null)
{
return;
}
try
{
using (var bm = GraphicsEngine.Current.Engine.CreateBitmap(Display.iWidth, Display.iHeight, GraphicsEngine.PixelFormat.Rgba32))
using (_canvas = bm.CreateCanvas())
{
DrawStream(_canvas, _msGeometry);
DrawStream(_canvas, _msSelection);
this.Draw(symbol, geometry);
NewBitmap?.Invoke(bm); //.BeginInvoke(bm, new AsyncCallback(AsyncInvoke.RunAndForget), null);
DoRefreshMapView?.Invoke();
Thread.Sleep(milliseconds);
_canvas.Clear();
DrawStream(_canvas, _msGeometry);
DrawStream(_canvas, _msSelection);
//NewBitmap?.Invoke(bm); //.BeginInvoke(_bitmap, new AsyncCallback(AsyncInvoke.RunAndForget), null);
DoRefreshMapView?.Invoke();
}
}
finally
{
_canvas = null;
}
}
