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// -*- Mode: C++; indent-tabs-mode: nil; tab-width: 2 -*-

/*

 * Copyright (C) 2013 Canonical Ltd

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License version 3 as

 * published by the Free Software Foundation.

 *

 * This program 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 General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program.  If not, see <http://www.gnu.org/licenses/>.

 *

 * Authored by: Marco Trevisan <marco.trevisan@canonical.com>

 */

#ifndef UNITY_DECORATIONS_DATA_POOL

#define UNITY_DECORATIONS_DATA_POOL

#include <unordered_map>

#include "DecorationStyle.h"

#include "DecorationsEdge.h"

namespace unity

{

namespace decoration

{

class DataPool : public sigc::trackable

{

public:

  typedef std::shared_ptr<DataPool> Ptr;

  static DataPool::Ptr const& Get();

  static void Reset();

  virtual ~DataPool();

  Cursor EdgeCursor(Edge::Type) const;

  cu::SimpleTexture::Ptr const& GlowTexture() const;

  cu::SimpleTexture::Ptr const& ButtonTexture(WindowButtonType, WidgetState) const;

  cu::SimpleTexture::Ptr const& ButtonTexture(double scale, WindowButtonType, WidgetState) const;

private:

  DataPool();

  DataPool(DataPool const&) = delete;

  DataPool& operator=(DataPool const&) = delete;

  void SetupCursors();

  void SetupTextures();

  std::array<Cursor, size_t(Edge::Type::Size)> edge_cursors_;

  cu::SimpleTexture::Ptr glow_texture_;

  typedef std::array<std::array<cu::SimpleTexture::Ptr, size_t(WidgetState::Size)>, size_t(WindowButtonType::Size)> WindowButtonsArray;

  WindowButtonsArray window_buttons_;

  std::unordered_map<double, WindowButtonsArray> scaled_window_buttons_;

};

} // decoration namespace

} // unity namespace

#endif // UNITY_DECORATIONS_DATA_POOL