Created
March 29, 2013 22:55
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MoveShape Server REVISION Combined
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using Newtonsoft.Json; | |
namespace MoveShape | |
{ | |
public class ShapeModel | |
{ | |
// We declare Left and Top as lowercase with JsonProperty to sync the client and server models | |
[JsonProperty("left")] | |
public double Left { get; set; } | |
[JsonProperty("top")] | |
public double Top { get; set; } | |
// We don't want the client to get the "LastUpdatedBy" property | |
[JsonIgnore] | |
public string LastUpdatedBy { get; set; } | |
} | |
} | |
using System; | |
using System.Threading; | |
using Microsoft.AspNet.SignalR; | |
namespace MoveShape | |
{ | |
public class Broadcaster | |
{ | |
private readonly static Lazy<Broadcaster> _instance = new Lazy<Broadcaster>(() => new Broadcaster()); | |
private readonly TimeSpan BroadcastInterval = TimeSpan.FromMilliseconds(20); // We're going to broadcast to all clients 50 times per second | |
private readonly IHubContext _hubContext; | |
private Timer _broadcastLoop; | |
private ShapeModel _model; | |
private bool _modelUpdated; | |
public Broadcaster() | |
{ | |
// Save our hub context so we can easily use it to send to its connected clients | |
_hubContext = GlobalHost.ConnectionManager.GetHubContext<MoveShapeHub>(); | |
_model = new ShapeModel(); | |
_modelUpdated = false; | |
// Start the broadcast loop | |
_broadcastLoop = new Timer(BroadcastShape, null, BroadcastInterval, BroadcastInterval); | |
} | |
public void BroadcastShape(object state) | |
{ | |
// No need to send anything if our model hasn't changed | |
if (_modelUpdated) | |
{ | |
// This is how we can access the Clients property in a static hub method or outside of the hub entirely | |
_hubContext.Clients.AllExcept(_model.LastUpdatedBy).updateShape(_model); | |
_modelUpdated = false; | |
} | |
} | |
public void UpdateShape(ShapeModel clientModel) | |
{ | |
_model = clientModel; | |
_modelUpdated = true; | |
} | |
public static Broadcaster Instance | |
{ | |
get | |
{ | |
return _instance.Value; | |
} | |
} | |
} | |
} | |
using System; | |
using System.Threading; | |
using Microsoft.AspNet.SignalR; | |
namespace MoveShape | |
{ | |
public class MoveShapeHub : Hub | |
{ | |
// Is set via the constructor on each creation | |
private Broadcaster _broadcaster; | |
public MoveShapeHub() | |
: this(Broadcaster.Instance) | |
{ | |
} | |
public MoveShapeHub(Broadcaster broadcaster) | |
{ | |
_broadcaster = broadcaster; | |
} | |
public void UpdateModel(ShapeModel clientModel) | |
{ | |
clientModel.LastUpdatedBy = Context.ConnectionId; | |
// Update the shape model within our broadcaster | |
_broadcaster.UpdateShape(clientModel); | |
} | |
} | |
} |
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