emoji_atlas.hpp

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// emoji_atlas.hpp
/*
  neogfx C++ App/Game Engine
  Copyright (c) 2015, 2020 Leigh Johnston.  All Rights Reserved.
  
  This program is free software: you can redistribute it and / or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation, either version 3 of the License, or
  (at your option) any later version.
  
  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/>.
*/
 
#pragma once
 
#include <neogfx/neogfx.hpp>
#include <unordered_map>
#include <neogfx/gfx/i_texture_manager.hpp>
#include <neogfx/gfx/i_texture_atlas.hpp>
#include "i_emoji_atlas.hpp"
 
namespace neogfx
{
    class emoji_atlas : public i_emoji_atlas
    {
    private:
        typedef std::map<dimension, std::string> sets;
        typedef std::map<std::u32string, sets> emojis;
    public:
        emoji_atlas();
    public:
        virtual bool is_emoji(char32_t aCodePoint) const;
        virtual bool is_emoji(const std::u32string& aCodePoints) const;
        virtual emoji_id emoji(char32_t aCodePoint, dimension aDesiredSize) const;
        virtual emoji_id emoji(const std::u32string& aCodePoints, dimension aDesiredSize = 64) const;
        virtual const i_texture& emoji_texture(emoji_id aId) const;
    private:
        const std::string kFilePath;
        std::unique_ptr<i_texture_atlas> iTextureAtlas;
        emojis iEmojis;
        mutable std::unordered_map<std::u32string, std::optional<emoji_id>> iEmojiMap;
    };
}