Add window layer setting with Always on Bottom and Always on Top options

src/DesktopMagic/Helpers/WindowPos.cs

@@ -76,6 +76,22 @@ namespace DesktopMagic
             DependencyProperty.RegisterAttached("IsHooked", typeof(WindowLockHook), typeof(WindowPos),
                 new PropertyMetadata(null));
 
+        public static void SetWindowLayer(Window window, string layer)
+        {
+            switch (layer)
+            {
+                case "Always on Bottom":
+                    window.Topmost = false;
+                    SendWpfWindowBack(window);
+                    SendWpfWindowBack(window);
+                    WindowPos.SetIsLocked(window, true);
+                    break;
+                case "Always on Top":
+                    window.Topmost = true;
+                    break;
+            }
+        }
+
         private class WindowLockHook
         {
             private readonly Window Window;

src/DesktopMagic/Plugins/PluginWindow.xaml.cs

@@ -322,9 +322,7 @@ public partial class PluginWindow : Window, IPluginWindow
             panel.Visibility = Visibility.Collapsed;
             imageBorder.BorderThickness = new Thickness(0);
             image.Margin = new Thickness(0);
-            WindowPos.SendWpfWindowBack(this);
-            WindowPos.SendWpfWindowBack(this);
-            WindowPos.SetIsLocked(this, true);
+            WindowPos.SetWindowLayer(this, pluginClassInstance?.windowLayer.Value ?? "Always on Bottom");
             tileBar.CaptionHeight = 0;
             ResizeMode = ResizeMode.NoResize;
         }
@@ -558,12 +556,14 @@ public partial class PluginWindow : Window, IPluginWindow
         {
             SetHorizontalAlignment();
             SetVerticalAlignment();
+            SetWindowLayer();
             SetRotation();
             SetThemeOverride();
             SetThemeOverrideItems();
 
             pluginClassInstance.horizontalAlignment.OnValueChanged += SetHorizontalAlignment;
             pluginClassInstance.verticalAlignment.OnValueChanged += SetVerticalAlignment;
+            pluginClassInstance.windowLayer.OnValueChanged += SetWindowLayer;
             pluginClassInstance.rotation.OnValueChanged += SetRotation;
             pluginClassInstance.themeOverride.OnValueChanged += SetThemeOverride;
 
@@ -599,6 +599,11 @@ public partial class PluginWindow : Window, IPluginWindow
             border.HorizontalAlignment = horizontalAlignment;
         }
 
+        void SetWindowLayer()
+        {
+            WindowPos.SetWindowLayer(this, pluginClassInstance.windowLayer.Value);
+        }
+
         void SetRotation()
         {
             image.LayoutTransform = new RotateTransform(pluginClassInstance.rotation.Value);

src/DesktopMagicPluginAPI/Plugin.cs

@@ -23,10 +23,13 @@ public abstract class Plugin
     [Setting("desktopmagic-vertical-alignment", "Vertical Alignment", -998)]
     internal ComboBox verticalAlignment = new ComboBox("Center", "Top", "Bottom");
 
-    [Setting("rotation", "Rotation", -997)]
+    [Setting("desktopmagic-window-layer", "Window Layer", -997)]
+    internal ComboBox windowLayer = new ComboBox("Always on Bottom", "Always on Top");
+
+    [Setting("desktopmagic-rotation", "Rotation", -996)]
     internal IntegerUpDown rotation = new IntegerUpDown(-360, 360, 0);
 
-    [Setting("theme-override", "Theme Override", -996)]
+    [Setting("desktopmagic-theme-override", "Theme Override", -995)]
     internal ComboBox themeOverride = new ComboBox("<None>");
 
     private IPluginData application = null!;