Initial commit: .NET MAUI Linux Platform
Complete Linux platform implementation for .NET MAUI with:
- 35+ Skia-rendered controls (Button, Label, Entry, CarouselView, etc.)
- Platform services (Clipboard, FilePicker, Notifications, DragDrop, etc.)
- Accessibility support (AT-SPI2, High Contrast)
- HiDPI and Input Method support
- 216 unit tests
- CI/CD workflows
- Project templates
- Documentation
🤖 Generated with Claude Code
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logikonline
258
Handlers/WindowHandler.cs
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258
Handlers/WindowHandler.cs
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// Licensed to the .NET Foundation under one or more agreements.
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// The .NET Foundation licenses this file to you under the MIT license.
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using Microsoft.Maui.Handlers;
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using Microsoft.Maui.Graphics;
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using Microsoft.Maui.Controls;
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using Microsoft.Maui.Platform;
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using SkiaSharp;
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namespace Microsoft.Maui.Platform.Linux.Handlers;
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/// <summary>
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/// Handler for Window on Linux.
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/// Maps IWindow to the Linux display window system.
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/// </summary>
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public partial class WindowHandler : ElementHandler<IWindow, SkiaWindow>
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{
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public static IPropertyMapper<IWindow, WindowHandler> Mapper =
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new PropertyMapper<IWindow, WindowHandler>(ElementHandler.ElementMapper)
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{
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[nameof(IWindow.Title)] = MapTitle,
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[nameof(IWindow.Content)] = MapContent,
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[nameof(IWindow.X)] = MapX,
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[nameof(IWindow.Y)] = MapY,
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[nameof(IWindow.Width)] = MapWidth,
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[nameof(IWindow.Height)] = MapHeight,
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[nameof(IWindow.MinimumWidth)] = MapMinimumWidth,
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[nameof(IWindow.MinimumHeight)] = MapMinimumHeight,
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[nameof(IWindow.MaximumWidth)] = MapMaximumWidth,
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[nameof(IWindow.MaximumHeight)] = MapMaximumHeight,
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};
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public static CommandMapper<IWindow, WindowHandler> CommandMapper =
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new(ElementHandler.ElementCommandMapper)
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{
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};
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public WindowHandler() : base(Mapper, CommandMapper)
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{
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}
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public WindowHandler(IPropertyMapper? mapper, CommandMapper? commandMapper = null)
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: base(mapper ?? Mapper, commandMapper ?? CommandMapper)
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{
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}
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protected override SkiaWindow CreatePlatformElement()
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{
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return new SkiaWindow();
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}
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protected override void ConnectHandler(SkiaWindow platformView)
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{
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base.ConnectHandler(platformView);
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platformView.CloseRequested += OnCloseRequested;
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platformView.SizeChanged += OnSizeChanged;
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}
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protected override void DisconnectHandler(SkiaWindow platformView)
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{
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platformView.CloseRequested -= OnCloseRequested;
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platformView.SizeChanged -= OnSizeChanged;
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base.DisconnectHandler(platformView);
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}
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private void OnCloseRequested(object? sender, EventArgs e)
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{
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VirtualView?.Destroying();
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}
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private void OnSizeChanged(object? sender, SizeChangedEventArgs e)
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{
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VirtualView?.FrameChanged(new Rect(0, 0, e.Width, e.Height));
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}
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public static void MapTitle(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Title = window.Title ?? "MAUI Application";
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}
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public static void MapContent(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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var content = window.Content;
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if (content?.Handler?.PlatformView is SkiaView skiaContent)
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{
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handler.PlatformView.Content = skiaContent;
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}
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}
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public static void MapX(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.X = (int)window.X;
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}
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public static void MapY(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Y = (int)window.Y;
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}
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public static void MapWidth(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Width = (int)window.Width;
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}
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public static void MapHeight(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.Height = (int)window.Height;
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}
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public static void MapMinimumWidth(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.MinWidth = (int)window.MinimumWidth;
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}
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public static void MapMinimumHeight(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.MinHeight = (int)window.MinimumHeight;
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}
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public static void MapMaximumWidth(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.MaxWidth = (int)window.MaximumWidth;
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}
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public static void MapMaximumHeight(WindowHandler handler, IWindow window)
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{
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if (handler.PlatformView is null) return;
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handler.PlatformView.MaxHeight = (int)window.MaximumHeight;
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}
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}
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/// <summary>
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/// Skia window wrapper for Linux display servers.
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/// </summary>
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public class SkiaWindow
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{
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private SkiaView? _content;
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private string _title = "MAUI Application";
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private int _x, _y;
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private int _width = 800;
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private int _height = 600;
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private int _minWidth = 100;
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private int _minHeight = 100;
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private int _maxWidth = int.MaxValue;
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private int _maxHeight = int.MaxValue;
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public SkiaView? Content
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{
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get => _content;
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set
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{
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_content = value;
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ContentChanged?.Invoke(this, EventArgs.Empty);
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}
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}
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public string Title
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{
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get => _title;
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set
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{
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_title = value;
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TitleChanged?.Invoke(this, EventArgs.Empty);
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}
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}
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public int X
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{
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get => _x;
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set { _x = value; PositionChanged?.Invoke(this, EventArgs.Empty); }
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}
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public int Y
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{
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get => _y;
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set { _y = value; PositionChanged?.Invoke(this, EventArgs.Empty); }
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}
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public int Width
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{
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get => _width;
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set
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{
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_width = Math.Clamp(value, _minWidth, _maxWidth);
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SizeChanged?.Invoke(this, new SizeChangedEventArgs(_width, _height));
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}
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}
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public int Height
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{
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get => _height;
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set
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{
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_height = Math.Clamp(value, _minHeight, _maxHeight);
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SizeChanged?.Invoke(this, new SizeChangedEventArgs(_width, _height));
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}
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}
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public int MinWidth
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{
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get => _minWidth;
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set { _minWidth = value; }
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}
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public int MinHeight
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{
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get => _minHeight;
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set { _minHeight = value; }
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}
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public int MaxWidth
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{
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get => _maxWidth;
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set { _maxWidth = value; }
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}
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public int MaxHeight
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{
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get => _maxHeight;
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set { _maxHeight = value; }
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}
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public event EventHandler? ContentChanged;
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public event EventHandler? TitleChanged;
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public event EventHandler? PositionChanged;
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public event EventHandler<SizeChangedEventArgs>? SizeChanged;
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public event EventHandler? CloseRequested;
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public void Close()
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{
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CloseRequested?.Invoke(this, EventArgs.Empty);
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}
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}
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/// <summary>
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/// Event args for window size changes.
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/// </summary>
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public class SizeChangedEventArgs : EventArgs
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{
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public int Width { get; }
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public int Height { get; }
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public SizeChangedEventArgs(int width, int height)
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{
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Width = width;
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Height = height;
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}
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}
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