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sluggish resize on macOS

See original GitHub issue

Avalonia 0.9.999-cibuild0008170-beta macOS Catalina

Resizing a window on macOS is sluggish / laggy. This is even true if the window only contains a single Button.

type MainWindow() =
    inherit Window()
    do
        base.Title <- "Sluggish resize example"
        base.Height <- 400.0
        base.Width <- 400.0
        
        base.Content <- Button ()
        
type App() =
    inherit Application()

    override this.Initialize() =
        this.Styles.Load "resm:Avalonia.Themes.Default.DefaultTheme.xaml?assembly=Avalonia.Themes.Default"
        this.Styles.Load "resm:Avalonia.Themes.Default.Accents.BaseDark.xaml?assembly=Avalonia.Themes.Default"

    override this.OnFrameworkInitializationCompleted() =
        match this.ApplicationLifetime with
        | :? IClassicDesktopStyleApplicationLifetime as desktopLifetime ->
            let mainWindow = MainWindow()
            desktopLifetime.MainWindow <- mainWindow
        | _ -> ()

module Program =

    [<EntryPoint>]
    let main(args: string[]) =
        AppBuilder
            .Configure<App>()
            .UsePlatformDetect()
            .UseSkia()
            .StartWithClassicDesktopLifetime(args)

Issue Analytics

State:
Created 3 years ago
Comments:9 (8 by maintainers)

Top GitHub Comments

2reactions

danwalmsleycommented, Jun 11, 2020

Reproed here… thanks

1reaction

JaggerJocommented, Jun 8, 2020

sure

using System;
using Avalonia;
using Avalonia.Controls;
using Avalonia.Controls.ApplicationLifetimes;
using Avalonia.Markup.Xaml.Styling;

namespace ConsoleApp1
{

    class MainWindow : Window
    {
        public MainWindow ()
        {
            Title = "Sluggish resize example";
            Width = 400.0;
            Height = 400.0;
            Content = new Button();
        }
    }

    class App : Application
    {
        public override void Initialize()
        {
            var styleA = new StyleInclude(baseUri: null);
            styleA.Source = new Uri("resm:Avalonia.Themes.Default.DefaultTheme.xaml?assembly=Avalonia.Themes.Default");
            Styles.Add (styleA);
            
            var styleB = new StyleInclude(baseUri: null);
            styleB.Source = new Uri("resm:Avalonia.Themes.Default.Accents.BaseDark.xaml?assembly=Avalonia.Themes.Default");
            Styles.Add (styleB);
        }

        public override void OnFrameworkInitializationCompleted()
        {
            if (ApplicationLifetime is IClassicDesktopStyleApplicationLifetime desktopLifetime)
            {
                var mainWindow = new MainWindow();
                desktopLifetime.MainWindow = mainWindow;
            }
        }
    }
    
    class Program
    {
        static void Main(string[] args)
        {
            AppBuilder
                .Configure<App>()
                .UsePlatformDetect()
                .UseSkia()
                .StartWithClassicDesktopLifetime(args);
        }
    }