text: /*
   * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #pragma once
  
  #include <AK/Function.h>
  #include <AK/String.h>
  #include <LibGUI/Forward.h>
  #include <LibGfx/Rect.h>
  #include <Services/Taskbar/TaskbarWindow.h>
  #include <Services/WindowServer/ScreenLayout.h>
  
  namespace GUI {
  
  using ScreenLayout = WindowServer::ScreenLayout;
  
  class Desktop {
  public:
      // Most people will probably have 4 screens or less
      static constexpr size_t default_screen_rect_count = 4;
  
      static Desktop& the();
      Desktop();
  
      void set_background_color(StringView background_color);
  
      void set_wallpaper_mode(StringView mode);
  
      String wallpaper_path() const;
      RefPtr<Gfx::Bitmap> wallpaper_bitmap() const;
      bool set_wallpaper(RefPtr<Gfx::Bitmap> wallpaper_bitmap, Optional<String> path);
  
      Gfx::IntRect rect() const { return m_bounding_rect; }
      const Vector<Gfx::IntRect, 4>& rects() const { return m_rects; }
      size_t main_screen_index() const { return m_main_screen_index; }
  
      unsigned workspace_rows() const { return m_workspace_rows; }
      unsigned workspace_columns() const { return m_workspace_columns; }
  
      int taskbar_height() const { return TaskbarWindow::taskbar_height(); }
  
      void did_receive_screen_rects(Badge<WindowServerConnection>, const Vector<Gfx::IntRect, 4>&, size_t, unsigned, unsigned);
  
      template<typename F>
      void on_receive_screen_rects(F&& callback)
      {
          m_receive_rects_callbacks.append(forward<F>(callback));
      }
  
  private:
      Vector<Gfx::IntRect, default_screen_rect_count> m_rects;
      size_t m_main_screen_index { 0 };
      Gfx::IntRect m_bounding_rect;
      unsigned m_workspace_rows { 1 };
      unsigned m_workspace_columns { 1 };
      Vector<Function<void(Desktop&)>> m_receive_rects_callbacks;
      bool m_is_setting_desktop_wallpaper { false };
  };
  
  }
  