From 45e3fa5f3ff7c6ec50c5a3a63517e20332f1bf58 Mon Sep 17 00:00:00 2001
From: Maximilien Noal <noal.maximilien@gmail.com>
Date: Tue, 23 Jan 2024 23:51:52 +0100
Subject: [PATCH] UI: Initialize timer once

Signed-off-by: Maximilien Noal <noal.maximilien@gmail.com>
---
 src/Spice86/ViewModels/MainWindowViewModel.cs | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/Spice86/ViewModels/MainWindowViewModel.cs b/src/Spice86/ViewModels/MainWindowViewModel.cs
index 782767458..3442c07e6 100644
--- a/src/Spice86/ViewModels/MainWindowViewModel.cs
+++ b/src/Spice86/ViewModels/MainWindowViewModel.cs
@@ -54,6 +54,7 @@ public sealed partial class MainWindowViewModel : ViewModelBase, IPauseStatus, I
     [ObservableProperty]
     private Configuration _configuration;
     private bool _disposed;
+    private bool _renderingTimerInitialized;
     private bool _drawingSemaphoreSlimDisposed;
     private Thread? _emulatorThread;
     private bool _isSettingResolution;
@@ -332,7 +333,11 @@ public void ShowColorPalette() {
     [RelayCommand]
     public void ResetTimeMultiplier() => TimeMultiplier = Configuration.TimeMultiplier;
 
-    private void InitializeRenderingThread() {
+    private void InitializeRenderingTimer() {
+        if (_renderingTimerInitialized) {
+            return;
+        }
+        _renderingTimerInitialized = true;
         _drawTimer.Elapsed += (_, _) => DrawScreen();
         _drawTimer.Start();
     }
@@ -448,7 +453,7 @@ public void SetResolution(int width, int height) => _uiDispatcher.Post(() => {
             }
         }
         _isSettingResolution = false;
-        InitializeRenderingThread();
+        InitializeRenderingTimer();
     }, DispatcherPriority.MaxValue);
 
     public event EventHandler<UIRenderEventArgs>? RenderScreen;