CollabVMDesktopClient/CollabVMClient/Views/CollabVMScreenView.axaml.cs

using Avalonia.Controls;
using CollabVMClient.ViewModels;
using CollabVMSharp;

namespace CollabVMClient.Views
{
    public partial class CollabVMScreenView : Window
    {
        public CollabVMScreenView()
        {
            InitializeComponent();
            this.exit.Click += Exit_Click;
            screen.PointerMoved += Screen_PointerMoved;
            screen.PointerPressed += Screen_PointerPressed;
            screen.PointerReleased += Screen_PointerReleased;
        }

        private void Screen_PointerReleased(object? sender, Avalonia.Input.PointerReleasedEventArgs e)
        {
            MouseButton btn = e.InitialPressMouseButton switch
            {
                Avalonia.Input.MouseButton.Left => MouseButton.Left,
                Avalonia.Input.MouseButton.Right => MouseButton.Right,
                Avalonia.Input.MouseButton.Middle => MouseButton.Middle,
                _ => (MouseButton)(-1)
            };
            if (btn == (MouseButton)(-1)) return;
            var dc = DataContext as CollabVMScreenViewModel;
            dc.MouseBtn(btn, false);
        }

        private void Screen_PointerPressed(object? sender, Avalonia.Input.PointerPressedEventArgs e)
        {
            var dc = DataContext as CollabVMScreenViewModel;
            // We can't see specifically which button was pressed, so just send every currently pressed button
            var point = e.GetCurrentPoint(screen);
            if (point.Properties.IsLeftButtonPressed) dc.MouseBtn(MouseButton.Left, true);
            if (point.Properties.IsMiddleButtonPressed) dc.MouseBtn(MouseButton.Middle, true);
            if (point.Properties.IsRightButtonPressed) dc.MouseBtn(MouseButton.Right, true);
        }

        private void Screen_PointerMoved(object? sender, Avalonia.Input.PointerEventArgs e)
        {
            var dc = DataContext as CollabVMScreenViewModel;
            var point = e.GetCurrentPoint(screen);
            dc.MoveMouse((int)point.Position.X, (int)point.Position.Y);
        }

        private void Exit_Click(object? sender, Avalonia.Interactivity.RoutedEventArgs e)
        {
            Close();
        }

        public void RefreshScreen()
        {
            screen.Source = ((CollabVMScreenViewModel)DataContext).Framebuffer;
            screen.InvalidateVisual();
        }
    }
}