WindowServer: Repaint rectangular overlays on theme change

Author: bplaat

Userland/Services/WindowServer/Overlays.h

@@ -45,10 +45,7 @@ class Overlay {
     void set_enabled(bool);
     bool is_enabled() const { return m_list_node.is_in_list(); }
 
-    virtual void theme_changed()
-    {
-        rect_changed(m_rect);
-    }
+    virtual void theme_changed() { invalidate(); }
 
     bool invalidate();
 
@@ -57,7 +54,7 @@ class Overlay {
 
     void set_rect(Gfx::IntRect const&);
 
-    virtual void rect_changed(Gfx::IntRect const&) {};
+    virtual void rect_changed(Gfx::IntRect const&) { }
 
 private:
     [[nodiscard]] bool apply_render_rect()
@@ -108,6 +105,8 @@ class RectangularOverlay : public Overlay {
     void clear_bitmaps();
     virtual void rect_changed(Gfx::IntRect const&) override;
 
+    virtual void theme_changed() override { invalidate_content(); }
+
     void invalidate_content();
 
 private: