[AlwaysOnTop] Proof of concept (#14360)

Co-authored-by: Niels Laute <niels.laute@live.nl>

src/settings-ui/Settings.UI.Library/AlwaysOnTopProperties.cs

@@ -0,0 +1,57 @@
+// Copyright (c) Microsoft Corporation
+// The Microsoft Corporation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace Microsoft.PowerToys.Settings.UI.Library
+{
+    // Needs to be kept in sync with src\modules\alwaysontop\AlwaysOnTop\Settings.h
+    public class AlwaysOnTopProperties
+    {
+        public static readonly HotkeySettings DefaultHotkeyValue = new HotkeySettings(true, true, false, false, 0x54);
+        public const bool DefaultFrameEnabled = true;
+        public const int DefaultFrameThickness = 15;
+        public const string DefaultFrameColor = "#0099cc";
+        public const bool DefaultSoundEnabled = true;
+        public const bool DefaultDoNotActivateOnGameMode = true;
+
+        public AlwaysOnTopProperties()
+        {
+            Hotkey = new KeyboardKeysProperty(DefaultHotkeyValue);
+            FrameEnabled = new BoolProperty(DefaultFrameEnabled);
+            FrameThickness = new IntProperty(DefaultFrameThickness);
+            FrameColor = new StringProperty(DefaultFrameColor);
+            SoundEnabled = new BoolProperty(DefaultSoundEnabled);
+            DoNotActivateOnGameMode = new BoolProperty(DefaultDoNotActivateOnGameMode);
+            ExcludedApps = new StringProperty();
+        }
+
+        [JsonPropertyName("hotkey")]
+        public KeyboardKeysProperty Hotkey { get; set; }
+
+        [JsonPropertyName("frame-enabled")]
+        public BoolProperty FrameEnabled { get; set; }
+
+        [JsonPropertyName("frame-thickness")]
+        public IntProperty FrameThickness { get; set; }
+
+        [JsonPropertyName("frame-color")]
+        public StringProperty FrameColor { get; set; }
+
+        [JsonPropertyName("sound-enabled")]
+        public BoolProperty SoundEnabled { get; set; }
+
+        [JsonPropertyName("do-not-activate-on-game-mode")]
+        public BoolProperty DoNotActivateOnGameMode { get; set; }
+
+        [JsonPropertyName("excluded-apps")]
+        public StringProperty ExcludedApps { get; set; }
+
+        public string ToJsonString()
+        {
+            return JsonSerializer.Serialize(this);
+        }
+    }
+}