#pragma region Copyright
/*
Toxid Game
Copyright (C) 2002-2008 Nuclex Development Labs
*/
#pragma endregion

#ifndef TOXID_UI_UISERVER_H
#define TOXID_UI_UISERVER_H

#include "Toxid.h"
#include "Main.h"

#include <Nuclex/GUI/DynamicTheme.h>
#include <Nuclex/GUI/DesktopWindow.h>
#include <Nuclex/Video/VertexDrawer.h>

namespace Toxid {

  // ------------------------------------------------------------------------------------------- //

  namespace {

    /// <summary>Centers a dialog on the screen</summary>
    /// <param name="Size">Size of the dialog to be centered</param>
    /// <returns>
    ///   A box describing the positioning and sizing of the centered dialog
    /// </returns>
    inline Box2<float> centerDialog(const Point2<float> &Size) {
      Point2<float> Pos = (Point2<float>(
        Main::getInstance().getVideoDevice()->getDisplayMode().Resolution, 
        StaticCastTag()
      ) - Size) / 2;
        
      return Box2<float>(Pos, Pos + Size);
    }

  }

  // ------------------------------------------------------------------------------------------- //

  /// <summary>Manages the game's user interface</summary>
  class UIServer : public sigc::trackable {
    
    /// <summary>Initializes a new user interface server</summary>
    public: UIServer(const string &sThemeFile = "Toxid.theme.xml");

    //
    // UIServer implementation
    //

    /// <summary>Retrieves the currently active screen</summary>
    /// <returns>The currently active screen</returns>
    public: const shared_ptr<GUI::DesktopWindow> &getScreen() const;
      
    /// <summary>Switches the active screen</summary>
    /// <param name="spScreen">Other screen to become active</param>
    public: void setScreen(const shared_ptr<GUI::DesktopWindow> &spScreen);

    /// <summary>Lets the user interface server draw the current screen</summary>
    /// <param name="spVideoRC">Video rendering context to use for drawing</param>
    /// <param name="spAudioRC">Audio rendering context to use for audio playback</param>
    public: void renderFrame(
      const shared_ptr<Video::VideoDevice::RenderingContext> &spVideoRC,
      const shared_ptr<Audio::AudioDevice::RenderingContext> &spAudioRC
    );
    
    /// <summary>Theme which defines the GUI's look</summary>
    private: GUI::DynamicTheme m_Theme;
    /// <summary>Vertex drawer used to draw the theme</summary>
    private: Video::VertexDrawer m_VertexDrawer;
    /// <summary>Stores the previously active screen</summary>
    private: shared_ptr<GUI::DesktopWindow> m_spPreviousScreen;
  };

  // ------------------------------------------------------------------------------------------- //

} // namespace Toxid

#endif // TOXID_UI_UISERVER_H