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Avalonia: use native window decorations under WSL #4580

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Merged
Gabriel Dufresne (GabrielDuf) merged 2 commits into from
Apr 13, 2026
+13 −4
Merged

Avalonia: use native window decorations under WSL #4580

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53fd6f5
Avalonia: use native window decorations under WSL
mamoreau-devolutions Apr 13, 2026
7a2458a
Fix Avalonia import ordering for CI style check
mamoreau-devolutions Apr 13, 2026
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17 changes: 13 additions & 4 deletions src/UniGetUI.Avalonia/Views/MainWindow.axaml.cs
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Original file line number Diff line number Diff line change
@@ -1,3 +1,4 @@
using System;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
Expand Down Expand Up @@ -100,14 +101,15 @@ private void SetupTitleBar()
}
else if (OperatingSystem.IsLinux())
{
// Linux: remove the native title bar entirely; our toolbar is the
// only chrome. Custom min/max/close buttons appear on the right.
WindowDecorations = WindowDecorations.None;
// WSLg can report incorrect maximize/input bounds with frameless windows.
// Keep native decorations there and use the in-app toolbar only.
bool isWsl = IsRunningUnderWsl();
WindowDecorations = isWsl ? WindowDecorations.Full : WindowDecorations.None;
TitleBarGrid.ClearValue(HeightProperty);
TitleBarGrid.Height = 44;
HamburgerPanel.Margin = new Thickness(10, 0, 8, 0);
AvatarControl.Height = 32;
LinuxWindowButtons.IsVisible = true;
LinuxWindowButtons.IsVisible = !isWsl;
MainContentGrid.Margin = new Thickness(0, 44, 0, 0);
// Keep maximize icon in sync with window state
this.GetObservable(WindowStateProperty).Subscribe(state =>
Expand All @@ -123,6 +125,13 @@ private void SetupTitleBar()
}
}

private static bool IsRunningUnderWsl()
{
string? wslDistro = Environment.GetEnvironmentVariable("WSL_DISTRO_NAME");
string? wslInterop = Environment.GetEnvironmentVariable("WSL_INTEROP");
return !string.IsNullOrWhiteSpace(wslDistro) || !string.IsNullOrWhiteSpace(wslInterop);
}

private void MinimizeButton_Click(object? sender, RoutedEventArgs e)
=> WindowState = WindowState.Minimized;

Expand Down
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