/// <summary>
/// Shows and moves the snap vertex.
/// </summary>
/// <param name="sender">The sender.</param>
/// <param name="graphic">The graphic.</param>
/// <param name="args">The <see cref="System.Windows.Input.MouseEventArgs"/> instance containing the event data.</param>
private void vertexLayer_MouseMove(object sender, GraphicMouseEventArgs args)
{
var graphic = args.Graphic;
if (DraggingVertex != null)
{
return;
}
if (graphic.Geometry is Polyline) //We are over a hover line
{
Polyline line = graphic.Geometry as Polyline;
Point pScreen = args.GetPosition(MyMap);
MapPoint pMap = MyMap.ScreenToMap(pScreen);
MapPoint snap = FindPointOnLineClosestToPoint(line.Paths[0][0], line.Paths[0][1], pMap);
if (snapVertex == null)
{
snapVertex = new Graphic()
{
Symbol = snapSymbol, Geometry = snap
};
vertexLayer.Graphics.Add(snapVertex);
}
else
{
snapVertex.Geometry = snap;
}
}
}
// Get mouse position
void GraphicsLayer_MouseEnterOrMove(object sender, GraphicMouseEventArgs args)
{
_mousePos = args.GetPosition(AssociatedObject);
GraphicsLayer graphicsLayer = sender as GraphicsLayer;
#if DEBUG
if (args.Graphic != null)
{
if (args.Graphic.Symbol is ESRI.ArcGIS.Client.Clustering.FlareSymbol)
{
Debug.WriteLine(string.Format("@@MouseEnter/Move, flare, {0}", MapApplication.GetLayerName(graphicsLayer)));
}
else if (args.Graphic.Attributes.ContainsKey("NAME"))
{
Debug.WriteLine(string.Format("@@MouseEnter/Move, {0}, {1}", args.Graphic.Attributes["NAME"], MapApplication.GetLayerName(graphicsLayer)));
}
else
{
Debug.WriteLine(string.Format("@@MouseEnter/Move, no NAME field, {0}", MapApplication.GetLayerName(graphicsLayer)));
}
}
#endif
if (ESRI.ArcGIS.Client.Extensibility.LayerProperties.GetIsPopupEnabled(graphicsLayer))
{
if (!ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetPopUpsOnClick(graphicsLayer))
{
HoverResults hoverResults = graphicsLayer.MapTip as HoverResults;
if (graphicsLayer.MapTip == null) //if not a custom map tip
{
//if first time, attach map tip to layer
attachApplicationMapTipToLayer(graphicsLayer, args.Graphic);
hoverResults = graphicsLayer.MapTip as HoverResults;
}
//if map tip dirty, rebuild map tip
if (hoverResults != null)
{
if (ESRI.ArcGIS.Mapping.Core.LayerExtensions.GetIsMapTipDirty(graphicsLayer) &&
args.Graphic == hoverResults.Graphic)
{
rebuildMapTipContentsBasedOnFieldVisibility(hoverResults);
}
//clear map tip dirty flag
ESRI.ArcGIS.Mapping.Core.LayerExtensions.SetIsMapTipDirty(graphicsLayer, false);
}
}
else
{
graphicsLayer.MapTip = null;
}
}
else if (graphicsLayer.MapTip is HoverResults)
{
graphicsLayer.MapTip = null;
}
}
private void graphicsLayer_MouseMove(object sender, GraphicMouseEventArgs e)
{
//Recenter the maptip as long as the maptip isn't displaying yet
if (Visibility == Visibility.Collapsed)
{
Point p = e.GetPosition(Parent as UIElement);
SetValue(Canvas.LeftProperty, p.X + HorizontalOffset);
SetValue(Canvas.TopProperty, p.Y + VerticalOffset);
timer.Start();
}
}
private void graphicsLayer_MouseEnter(object sender, GraphicMouseEventArgs args)
{
mouseIsOver = true;
Graphic graphic = args.Graphic;
if (currentFeature != graphic) //Mouse entered a new feature
{
this.expanded = false;
currentFeature = graphic;
Point p = args.GetPosition(Parent as UIElement);
SetValue(Canvas.LeftProperty, p.X + HorizontalOffset);
SetValue(Canvas.TopProperty, p.Y + VerticalOffset);
this.DataContext = this.ItemsSource = graphic.Attributes;
if (!string.IsNullOrEmpty(TitleMember))
{
object title = null;
if (graphic.Attributes.ContainsKey(TitleMember))
title = string.Format("{0}", graphic.Attributes[TitleMember]);
else
{
string firstKey = null;
foreach (string key in graphic.Attributes.Keys)
{
if (firstKey == null) firstKey = key;
if (graphic.Attributes[key].GetType() == typeof(string))
{
title = graphic.Attributes[key] as string;
break;
}
}
if (title == null && !string.IsNullOrEmpty(firstKey))
title = string.Format("{0}", graphic.Attributes[firstKey]);
}
this.Title = title;
}
ChangeVisualState(false);
Visibility = Visibility.Collapsed;
}
if (Visibility == Visibility.Collapsed)
{
timer.Start(); //Delay showing maptip
}
}