Layer audioflyin on top of fullscreen windows

LAYER_TOP (The previously hardcoded layer) draws below fullscreen
windows (at least on Hyprland). For the flyin we want it to be always on
top, so LAYER_OVERLAY is used instead now.

src/AudioFlyin.cpp

@@ -150,6 +150,8 @@ namespace AudioFlyin
         padding = Widget::Create<Box>();
         mainWidget->AddChild(std::move(padding));
 
+        // We want the audio flyin on top of fullscreen windows
+        window.SetLayer(Layer::Overlay);
         window.SetExclusive(false);
         window.SetAnchor(Anchor::Bottom);
         window.SetMainWidget(std::move(mainWidget));

src/Window.cpp

@@ -48,7 +48,13 @@ void Window::Run()
     m_Window = (GtkWindow*)gtk_window_new(GTK_WINDOW_TOPLEVEL);
 
     gtk_layer_init_for_window(m_Window);
-    gtk_layer_set_layer(m_Window, GTK_LAYER_SHELL_LAYER_TOP);
+
+    switch (m_Layer)
+    {
+    case Layer::Top: gtk_layer_set_layer(m_Window, GTK_LAYER_SHELL_LAYER_TOP); break;
+    case Layer::Overlay: gtk_layer_set_layer(m_Window, GTK_LAYER_SHELL_LAYER_OVERLAY); break;
+    }
+
     if (m_Exclusive)
         gtk_layer_auto_exclusive_zone_enable(m_Window);
 

src/Window.h

@@ -12,6 +12,12 @@ enum class Anchor
 };
 DEFINE_ENUM_FLAGS(Anchor);
 
+enum class Layer
+{
+    Top,
+    Overlay
+};
+
 class Window
 {
 public:
@@ -29,6 +35,7 @@ public:
     void SetAnchor(Anchor anchor) { m_Anchor = anchor; }
     void SetMargin(Anchor anchor, int32_t margin);
     void SetExclusive(bool exclusive) { m_Exclusive = exclusive; }
+    void SetLayer(Layer layer) { m_Layer = layer;}
 
     void SetMainWidget(std::unique_ptr<Widget>&& mainWidget);
 
@@ -47,6 +54,7 @@ private:
     Anchor m_Anchor;
     std::array<std::pair<Anchor, int32_t>, 4> m_Margin;
     bool m_Exclusive = true;
+    Layer m_Layer = Layer::Top;
 
     int32_t m_MonitorID;
     GdkMonitor* m_Monitor = nullptr;