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66 行
2.2 KiB

using System;
using System.Collections.Generic;
using Unity.UIWidgets.foundation;
using UnityEngine;
namespace Unity.UIWidgets.gestures {
public delegate void PointerRoute(PointerEvent evt);
public class PointerRouter {
readonly Dictionary<int, HashSet<PointerRoute>> _routeMap = new Dictionary<int, HashSet<PointerRoute>>();
readonly HashSet<PointerRoute> _globalRoutes = new HashSet<PointerRoute>();
public void addRoute(int pointer, PointerRoute route) {
var routes = this._routeMap.putIfAbsent(pointer, () => new HashSet<PointerRoute>());
D.assert(!routes.Contains(route));
routes.Add(route);
}
public void removeRoute(int pointer, PointerRoute route) {
D.assert(this._routeMap.ContainsKey(pointer));
var routes = this._routeMap[pointer];
routes.Remove(route);
if (routes.isEmpty()) {
this._routeMap.Remove(pointer);
}
}
public void addGlobalRoute(PointerRoute route) {
D.assert(!this._globalRoutes.Contains(route));
this._globalRoutes.Add(route);
}
public void removeGlobalRoute(PointerRoute route) {
D.assert(this._globalRoutes.Contains(route));
this._globalRoutes.Remove(route);
}
void _dispatch(PointerEvent evt, PointerRoute route) {
try {
route(evt);
}
catch (Exception ex) {
Debug.LogError("Error while routing a pointer event: " + ex);
}
}
public void route(PointerEvent evt) {
HashSet<PointerRoute> routes;
this._routeMap.TryGetValue(evt.pointer, out routes);
if (routes != null) {
foreach (PointerRoute route in new List<PointerRoute>(routes)) {
if (routes.Contains(route)) {
this._dispatch(evt, route);
}
}
}
foreach (PointerRoute route in new List<PointerRoute>(this._globalRoutes)) {
if (this._globalRoutes.Contains(route)) {
this._dispatch(evt, route);
}
}
}
}
}