#pragma region CPL License
/*
Nuclex Native Framework
Copyright (C) 2002-2013 Nuclex Development Labs

This library is free software; you can redistribute it and/or
modify it under the terms of the IBM Common Public License as
published by the IBM Corporation; either version 1.0 of the
License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
IBM Common Public License for more details.

You should have received a copy of the IBM Common Public
License along with this library
*/
#pragma endregion // CPL License

#ifndef NUCLEX_GRAPHICS_RASTERIZATION_DIRECT3D11TEXTURE2OBSERVER_H
#define NUCLEX_GRAPHICS_RASTERIZATION_DIRECT3D11TEXTURE2OBSERVER_H

#include "Nuclex/Graphics/Config.h"
#include "Nuclex/Graphics/Rasterization/Texture2.h"
#include "Direct3D11TextureObserver.h"

namespace Nuclex { namespace Graphics { namespace Rasterization {

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

  class Direct3D11RasterizerResources;

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

}}} // namespace Nuclex::Graphics::Rasterization

namespace Nuclex { namespace Graphics { namespace Rasterization {

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

  ///<summary>Manages an attached Direct3D 11 texture</summary>
  class Direct3D11Texture2Observer : public Direct3D11TextureObserver {

    /// <summary>Initializes a new Direct3D 11 texture</summary>
    /// <param name="resources">Manager the texture belongs to</param>
    /// <param name="texture">Texture the observer is attached to</param>
    public: Direct3D11Texture2Observer(
      Direct3D11RasterizerResources &resources, Texture2 *texture
    );

    /// <summary>Frees all resources owned by the texture observer</summary>
    public: virtual ~Direct3D11Texture2Observer() {}

    /// <summary>Called right before the texture is destroyed</summary>
    public: void Destroying();

    /// <summary>Called when the texture has been cleared</summary>
    public: void Cleared();

    /// <summary>Called when the texture has been modified</summary>
    /// <param name="changedBox">Box around the changed area</param>
    public: void Changed(const Box &changedBox);

    /// <summary>Retrieves the agnostic texture being observed</summary>
    /// <returns>The agnostic texture being observed</returns>
    public: Texture2 *GetResource() const { return this->texture2; }

    /// <summary>Retrieves the Direct3D texture the observer is managing</summary>
    /// <returns>The observer's Direct3D texture</returns>
    public: const ID3D11Texture2DPtr &GetDirect3DTexture() const {
      return this->direct3DTexture;
    }

    /// <summary>Retrieves the view for the observer's Direct3D texture</summary>
    /// <returns>The view for the observer's Direct3D texture</returns>
    public: const ID3D11ShaderResourceViewPtr &GetResourceView() const {
      return this->direct3DResourceView;
    }

    private: Direct3D11Texture2Observer(const Direct3D11Texture2Observer &);
    private: Direct3D11Texture2Observer &operator =(const Direct3D11Texture2Observer &);

    /// <summary>Resource manager the render target belongs to</summary>
    private: Direct3D11RasterizerResources &resources;
    /// <summary>Texture this observer is attached to</summary>
    private: Texture2 *texture2;
    /// <summary>Texture managed by this observer</summary>
    private: ID3D11Texture2DPtr direct3DTexture;
    /// <summary>View for the texture managed by this obserer</summary>
    private: ID3D11ShaderResourceViewPtr direct3DResourceView;

  };

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

}}} // namespace Nuclex::Graphics::Rasterization

#endif // NUCLEX_GRAPHICS_RASTERIZATION_DIRECT3D11TEXTURE2OBSERVER_H