fix for issue #189 slow startup (#194)

* fix for long delay starting up on linux
jinek · Dec 8, 2024 · 4a17fb5 · 4a17fb5
1 parent a256342
commit 4a17fb5
Showing 1 changed file with 10 additions and 23 deletions.
diff --git a/src/Consolonia.Core/Infrastructure/InputLessDefaultNetConsole.cs b/src/Consolonia.Core/Infrastructure/InputLessDefaultNetConsole.cs
@@ -47,29 +47,7 @@ public bool CaretVisible
 
         public PixelBufferSize Size { get; private set; }
 
-        public bool SupportsComplexEmoji
-        {
-            get
-            {
-                if (_supportEmoji == null)
-                {
-                    // Detect complex emoji support by writing a complex emoji and checking cursor position.
-                    // If the cursor moves 2 positions, it indicates proper rendering of composite surrogate pairs.
-                    (int left, int top) = Console.GetCursorPosition();
-                    WriteText(
-                        $"{Esc.Foreground(Colors.Transparent)}{Esc.Background(Colors.Transparent)}{TestEmoji}");
-
-                    // TODO, escape sequence
-                    (int left2, _) = Console.GetCursorPosition();
-                    _supportEmoji = left2 - left == 2;
-                    Console.SetCursorPosition(left, top);
-
-                    WriteText(Esc.ClearScreen);
-                }
-
-                return _supportEmoji ?? true;
-            }
-        }
+        public bool SupportsComplexEmoji => _supportEmoji ?? false;
 
         public void SetTitle(string title)
         {
@@ -180,6 +158,15 @@ private void PrepareConsole()
             // enable alternate screen so original console screen is not affected by the app
             WriteText(Esc.EnableAlternateBuffer);
             WriteText(Esc.HideCursor);
+            // Detect complex emoji support by writing a complex emoji and checking cursor position.
+            // If the cursor moves 2 positions, it indicates proper rendering of composite surrogate pairs.
+            (int left, int top) = Console.GetCursorPosition();
+            WriteText(
+                $"{Esc.Foreground(Colors.Transparent)}{Esc.Background(Colors.Transparent)}{TestEmoji}");
+            (int left2, _) = Console.GetCursorPosition();
+            _supportEmoji = left2 - left == 2;
+            Console.SetCursorPosition(left, top);
+
             WriteText(Esc.ClearScreen);
 #pragma warning restore CA1303 // Do not pass literals as localized parameters
         }