feat: WIP.

demo/Ursa.Demo/Views/MainWindow.axaml

@@ -1,10 +1,11 @@
-<Window
+<u:UrsaWindow
     x:Class="Ursa.Demo.Views.MainWindow"
     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"
     xmlns:views="clr-namespace:Ursa.Demo.Views"
+    xmlns:u="https://irihi.tech/ursa"
     xmlns:viewModels="clr-namespace:Ursa.Demo.ViewModels"
     Title="Ursa.Demo"
     d:DesignHeight="450"
@@ -14,4 +15,4 @@
     Icon="/Assets/Ursa.ico"
     mc:Ignorable="d">
     <views:MainView />
-</Window>
+</u:UrsaWindow>

src/Ursa.Themes.Semi/Controls/UrsaWindow.axaml

@@ -0,0 +1,8 @@
+<ResourceDictionary xmlns="https://github.com/avaloniaui"
+                    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+                    xmlns:u="https://irihi.tech/ursa">
+    <!-- Add Resources Here -->
+    <ControlTheme x:Key="{x:Type u:UrsaWindow}" TargetType="u:UrsaWindow">
+        
+    </ControlTheme>
+</ResourceDictionary>

src/Ursa/Windows/UrsaWindow.cs

@@ -0,0 +1,50 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Platform;
+
+namespace Ursa.Controls;
+
+/// <summary>
+/// Ursa Window is an advanced Window control that provides a lot of features and customization options.
+/// </summary>
+public class UrsaWindow: Window
+{
+    public static readonly StyledProperty<bool> ShowFullScreenButtonProperty = AvaloniaProperty.Register<UrsaWindow, bool>(
+        nameof(ShowFullScreenButton), false);
+
+    public bool ShowFullScreenButton
+    {
+        get => GetValue(ShowFullScreenButtonProperty);
+        set => SetValue(ShowFullScreenButtonProperty, value);
+    }
+
+    public static readonly StyledProperty<bool> ShowMaximumButtonProperty = AvaloniaProperty.Register<UrsaWindow, bool>(
+        nameof(ShowMaximumButton));
+
+    public bool ShowMaximumButton
+    {
+        get => GetValue(ShowMaximumButtonProperty);
+        set => SetValue(ShowMaximumButtonProperty, value);
+    }
+    
+    public static readonly StyledProperty<bool> ShowMinimumButtonProperty = AvaloniaProperty.Register<UrsaWindow, bool>(
+        nameof(ShowMinimumButton));
+    
+    public bool ShowMinimumButton
+    {
+        get => GetValue(ShowMinimumButtonProperty);
+        set => SetValue(ShowMinimumButtonProperty, value);
+    }
+    
+    public static readonly StyledProperty<bool> ShowCloseButtonProperty = AvaloniaProperty.Register<UrsaWindow, bool>(
+        nameof(ShowCloseButton));
+    
+    public bool ShowCloseButton
+    {
+        get => GetValue(ShowCloseButtonProperty);
+        set => SetValue(ShowCloseButtonProperty, value);
+    }
+    
+    
+    
+}