Remove DispatcherTimerExtensions

MapControl/Shared/DispatcherTimerExtensions.cs

@@ -1,46 +0,0 @@
-#if WPF
-using System.Windows;
-using System.Windows.Threading;
-#elif UWP
-using Windows.UI.Xaml;
-#elif WINUI
-global using DispatcherTimer = Microsoft.UI.Dispatching.DispatcherQueueTimer;
-using Microsoft.UI.Xaml;
-#elif AVALONIA
-using DependencyObject = Avalonia.AvaloniaObject;
-using Avalonia.Threading;
-#endif
-using System;
-
-namespace MapControl
-{
-    internal static class DispatcherTimerExtensions
-    {
-        public static DispatcherTimer CreateTimer(this DependencyObject obj, TimeSpan interval)
-        {
-#if WINUI
-            var timer = obj.DispatcherQueue.CreateTimer();
-#else
-            var timer = new DispatcherTimer();
-#endif
-            timer.Interval = interval;
-            return timer;
-        }
-
-        public static void Run(this DispatcherTimer timer, bool restart = false)
-        {
-            if (restart)
-            {
-                timer.Stop();
-            }
-#if WINUI
-            if (!timer.IsRunning)
-#else
-            if (!timer.IsEnabled)
-#endif
-            {
-                timer.Start();
-            }
-        }
-    }
-}

MapControl/Shared/MapImageLayer.cs

@@ -62,7 +62,7 @@ namespace MapControl
 
             loadingProgress = new Progress<double>(p => SetValue(LoadingProgressProperty, p));
 
-            updateTimer = this.CreateTimer(UpdateInterval);
+            updateTimer = new DispatcherTimer { Interval = UpdateInterval };
             updateTimer.Tick += async (s, e) => await UpdateImageAsync();
         }
 
@@ -164,7 +164,15 @@ namespace MapControl
             }
             else
             {
-                updateTimer.Run(!UpdateWhileViewportChanging);
+                if (!UpdateWhileViewportChanging)
+                {
+                    updateTimer.Stop();
+                }
+
+                if (!updateTimer.IsEnabled)
+                {
+                    updateTimer.Start();
+                }
             }
         }
 
@@ -174,9 +182,12 @@ namespace MapControl
         {
             if (updateInProgress)
             {
-                // Update image on next tick, start timer if not running.
+                // Update image on next timer tick.
                 //
-                updateTimer.Run();
+                if (!updateTimer.IsEnabled)
+                {
+                    updateTimer.Start();
+                }
             }
             else
             {

MapControl/Shared/MapTilePyramidLayer.cs

@@ -68,7 +68,7 @@ namespace MapControl
 
             loadingProgress = new Progress<double>(p => SetValue(LoadingProgressProperty, p));
 
-            updateTimer = this.CreateTimer(UpdateInterval);
+            updateTimer = new DispatcherTimer { Interval = UpdateInterval };
             updateTimer.Tick += (s, e) => Update(false);
 
             MapPanel.SetRenderTransform(this, new MatrixTransform());
@@ -185,7 +185,10 @@ namespace MapControl
                     parentMap.ViewportChanged += OnViewportChanged;
                 }
 
-                updateTimer.Run();
+                if (!updateTimer.IsEnabled)
+                {
+                    updateTimer.Start();
+                }
             }
         }
 
@@ -229,7 +232,15 @@ namespace MapControl
             {
                 SetRenderTransform();
 
-                updateTimer.Run(!UpdateWhileViewportChanging);
+                if (!UpdateWhileViewportChanging)
+                {
+                    updateTimer.Stop();
+                }
+
+                if (!updateTimer.IsEnabled)
+                {
+                    updateTimer.Start();
+                }
             }
         }
     }