Avalonia 实现平滑拖动指定控件

1.创建一个UserControl控件，并且添加以下代码.

using System;using Avalonia;using Avalonia.Controls;using Avalonia.Input;using Avalonia.Markup.Xaml;using Avalonia.Media;using Avalonia.Media.Imaging;using Avalonia.Platform;using Avalonia.Threading;using Avalonia.VisualTree;namespace Token;/// <summary>/// 实现拖动的控件/// </summary>public partial class DragControls : UserControl{    /// <summary>    /// 记录上一次鼠标位置    /// </summary>    private Point lastMousePosition;    /// <summary>    /// 用于平滑更新坐标的计时器    /// </summary>    private DispatcherTimer _timer;    /// <summary>    /// 标记是否先启动了拖动    /// </summary>    private bool isDragging = false;    /// <summary>    /// 需要更新的坐标点    /// </summary>    private PixelPoint _targetPosition;    public LoginStackPanelRight()    {        InitializeComponent();        // 添加当前控件的事件监听        PointerPressed += OnPointerPressed;        PointerMoved += OnPointerMoved;        PointerReleased += OnPointerReleased;        // 初始化计时器        _timer = new DispatcherTimer        {            Interval = TimeSpan.FromMilliseconds(10)        };        _timer.Tick += OnTimerTick;    }    /// <summary>    /// 计时器事件    /// </summary>    /// <param name="sender"></param>    /// <param name="e"></param>    private void OnTimerTick(object sender, EventArgs e)    {        var window = this.FindAncestorOfType<Window>();        if (window != null && window.Position != _targetPosition)        {            // 更新坐标            window.Position = _targetPosition;        }    }    private void InitializeComponent()    {        AvaloniaXamlLoader.Load(this);    }    private void OnPointerPressed(object sender, PointerPressedEventArgs e)    {        if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed) return;        // 启动拖动        isDragging = true;        // 记录当前坐标        lastMousePosition = e.GetPosition(this);        e.Handled = true;        // 启动计时器        _timer.Start();    }    private void OnPointerReleased(object sender, PointerReleasedEventArgs e)    {        if (!isDragging) return;        // 停止拖动        isDragging = false;        e.Handled = true;        // 停止计时器        _timer.Stop();    }    private void OnPointerMoved(object sender, PointerEventArgs e)    {        if (!e.GetCurrentPoint(this).Properties.IsLeftButtonPressed) return;                // 如果没有启动拖动，则不执行        if (!isDragging) return;        var currentMousePosition = e.GetPosition(this);        var offset = currentMousePosition - lastMousePosition;        var window = this.FindAncestorOfType<Window>();        if (window != null)        {            // 记录当前坐标            _targetPosition = new PixelPoint(window.Position.X + (int)offset.X,                window.Position.Y + (int)offset.Y);        }    }}

通过以上组件可以实现平滑拖动 效果如图

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