ux: ignore zoom for left caption buttons on macOS

Signed-off-by: leo <[email protected]>

Author: love-linger

src/Views/ChromelessWindow.cs

@@ -8,6 +8,15 @@ namespace SourceGit.Views
 {
     public class ChromelessWindow : Window
     {
+        public static readonly StyledProperty<double> LeftCaptionButtonWidthProperty =
+            AvaloniaProperty.Register<ChromelessWindow, double>(nameof(LeftCaptionButtonWidth), 72.0);
+
+        public double LeftCaptionButtonWidth
+        {
+            get => GetValue(LeftCaptionButtonWidthProperty);
+            set => SetValue(LeftCaptionButtonWidthProperty, value);
+        }
+
         public bool UseSystemWindowFrame
         {
             get => Native.OS.UseSystemWindowFrame;
@@ -23,6 +32,7 @@ public bool CloseOnESC
 
         public ChromelessWindow()
         {
+            LeftCaptionButtonWidth = 72.0 / Math.Max(1.0, ViewModels.Preferences.Instance.Zoom);
             Focusable = true;
             Native.OS.SetupForWindow(this);
         }
@@ -113,12 +123,14 @@ protected override void OnKeyDown(KeyEventArgs e)
                 {
                     var zoom = Math.Min(ViewModels.Preferences.Instance.Zoom + 0.05, 2.5);
                     ViewModels.Preferences.Instance.Zoom = zoom;
+                    LeftCaptionButtonWidth = 72.0 / zoom;
                     e.Handled = true;
                 }
                 else if (e.Key == Key.OemMinus)
                 {
                     var zoom = Math.Max(ViewModels.Preferences.Instance.Zoom - 0.05, 1);
                     ViewModels.Preferences.Instance.Zoom = zoom;
+                    LeftCaptionButtonWidth = 72.0 / zoom;
                     e.Handled = true;
                 }
             }

src/Views/Launcher.axaml

@@ -28,7 +28,7 @@
               PointerPressed="BeginMoveWindow"/>
 
       <!-- Caption Buttons (macOS) -->
-      <Border Grid.Column="0" Width="72" IsVisible="{Binding #ThisControl.HasLeftCaptionButton}"/>
+      <Border Grid.Column="0" Width="{Binding #ThisControl.LeftCaptionButtonWidth}" IsVisible="{Binding #ThisControl.HasLeftCaptionButton}"/>
 
       <!-- Menu (Windows/Linux) -->
       <Button Grid.Column="0" Classes="icon_button" VerticalAlignment="Bottom" Margin="6,0,0,3" IsVisible="{OnPlatform True, macOS=False}">