/*************************************************************************
 * Copyright (C) 2009 Tavian Barnes <tavianator@gmail.com>               *
 *                                                                       *
 * This file is part of The Dimension Library.                           *
 *                                                                       *
 * The Dimension Library is free software; you can redistribute it and/  *
 * or modify it under the terms of the GNU Lesser General Public License *
 * as published by the Free Software Foundation; either version 3 of the *
 * License, or (at your option) any later version.                       *
 *                                                                       *
 * The Dimension 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 GNU  *
 * Lesser General Public License for more details.                       *
 *                                                                       *
 * You should have received a copy of the GNU Lesser General Public      *
 * License along with this program.  If not, see                         *
 * <http://www.gnu.org/licenses/>.                                       *
 *************************************************************************/

// dmnsn_canvas* wrapper.

#ifndef DIMENSIONXX_CANVAS_HPP
#define DIMENSIONXX_CANVAS_HPP

#include <tr1/memory>

namespace Dimension
{
  // Base canvas class.  Wraps a dmnsn_canvas*.
  class Canvas
  {
  public:
    // Allocate a dmnsn_canvas of specified width and height
    Canvas(unsigned int width, unsigned int height);

    // Wrap an existing canvas
    explicit Canvas(dmnsn_canvas* canvas);

    // Canvas(const Canvas& canvas);

    // Delete the canvas
    ~Canvas();

    // Get the width and height
    unsigned int width() const;
    unsigned int height() const;

    // Get and set a pixel
    Color pixel(unsigned int x, unsigned int y) const;
    void pixel(unsigned int x, unsigned int y, const Color& c);

    // Access the wrapped C object.
    dmnsn_canvas*       dmnsn();
    const dmnsn_canvas* dmnsn() const;

  private:
    // Copy-assignment prohibited
    Canvas& operator=(const Canvas&);

    std::tr1::shared_ptr<dmnsn_canvas*> m_canvas;
  };

  // Array_Element specialization
  template <>
  class Array_Element<Canvas>
    : public DMNSN_Array_Element<Canvas, dmnsn_canvas*>
  {
  public:
    typedef dmnsn_canvas* C_Type;

    Array_Element() { }
    Array_Element(Canvas& canvas)
      : DMNSN_Array_Element<Canvas, dmnsn_canvas*>(canvas) { }
    Array_Element(C_Type c)
      : DMNSN_Array_Element<Canvas, dmnsn_canvas*>(c) { }
    // Array_Element(const Array_Element& ae);
    // ~Array_Element();

    // Array_Element& operator=(const Array_Element& ae);
  };
}

#endif /* DIMENSIONXX_CANVAS_HPP */