C# Avalonia 20 - WindowsMenu- TransparentWithShapes

TransparentWithShapes.axaml代码

<Window xmlns="https://github.com/avaloniaui"xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"xmlns:d="http://schemas.microsoft.com/expression/blend/2008"xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"Width="210" Height="170"x:Class="AvaloniaUI.TransparentWithShapes"Title="TransparentWithShapes"SystemDecorations="None"TransparencyLevelHint="Transparent"Background="Transparent"><Grid x:Name="root"><!-- 这里的 Path 既画边框/填充，也会用于 Clip  --><Path x:Name="shapePath"Stroke="DarkGray"StrokeThickness="1"Stretch="None"><Path.Fill><LinearGradientBrush StartPoint="20%,0%" EndPoint="80%,100%"><GradientStop Color="White" Offset="0"/><GradientStop Color="White" Offset="0.45"/><GradientStop Color="LightBlue" Offset="0.9"/><GradientStop Color="Gray" Offset="1"/></LinearGradientBrush></Path.Fill><Path.Data><PathGeometry><PathFigure StartPoint="20,0" IsClosed="True"><LineSegment Point="140,0"/><ArcSegment Point="160,20" Size="20,20" SweepDirection="Clockwise"/><LineSegment Point="160,60"/><ArcSegment Point="140,80" Size="20,20" SweepDirection="Clockwise"/><LineSegment Point="70,80"/><LineSegment Point="70,130"/><LineSegment Point="40,80"/><LineSegment Point="20,80"/><ArcSegment Point="0,60" Size="20,20" SweepDirection="Clockwise"/><LineSegment Point="0,20"/><ArcSegment Point="20,0" Size="20,20" SweepDirection="Clockwise"/></PathFigure></PathGeometry></Path.Data><Path.RenderTransform><ScaleTransform ScaleX="1.3" ScaleY="1.3"/></Path.RenderTransform></Path><StackPanel Margin="5"><Button HorizontalAlignment="Right"Margin="0,5,10,0"Click="cmdClose_Click">x</Button><TextBlock TextWrapping="Wrap"FontSize="15"HorizontalAlignment="Center"PointerPressed="window_PointerPressed">This is a balloon-shaped window.</TextBlock></StackPanel></Grid>
</Window>

TransparentWithShapes.axaml.cs代码

using Avalonia;
using Avalonia.Controls;
using Avalonia.Input;
using Avalonia.Interactivity;
using Avalonia.Markup.Xaml;
using Avalonia.Media;namespace AvaloniaUI;public partial class TransparentWithShapes : Window
{public TransparentWithShapes(){InitializeComponent();ApplyClip();}private void ApplyClip(){if (shapePath.Data is not Geometry geometry)return;Geometry clip;clip = Geometry.Parse(geometry.ToString() ?? "");if (shapePath.RenderTransform != null){clip.Transform = new MatrixTransform(shapePath.RenderTransform.Value);}root.Clip = clip;}private void cmdClose_Click(object? sender, RoutedEventArgs e){Close();}private void window_PointerPressed(object? sender, PointerPressedEventArgs e){if (e.GetCurrentPoint(this).Properties.IsLeftButtonPressed)BeginMoveDrag(e);}
}

运行效果