/*
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at https://mozilla.org/MPL/2.0/.
 */

#pragma once

#include <string>
#include <map>
#include "Scene/Texture.hpp"
#include "msdfgen.h"
#include "msdfgen-ext.h"
#include "msdf-atlas-gen/msdf-atlas-gen.h"

namespace OpenVulkano::Scene
{
	using namespace msdfgen;
	using namespace msdf_atlas;
	using namespace OpenVulkano::Scene;

	struct GlyphInfo
	{
		GlyphGeometry geometry;
		GlyphBox glyphBox;
		Texture texture;
	};

	class FontAtlasGenerator
	{
	public:
		void GenerateAtlas(const std::string& fontFile, const std::string& outputFile, const Charset& = Charset::ASCII);
		std::map<unicode_t, GlyphInfo>& GetAtlasInfo() { return m_symbols; }
	private:
		std::pair<FreetypeHandle*, FontHandle*> GetHandlers(const std::string& fontFile);
	private:
		ImmediateAtlasGenerator<float, 1, sdfGenerator, BitmapAtlasStorage<msdfgen::byte, 1>> m_generator;
		std::map<unicode_t, GlyphInfo> m_symbols;
		std::string m_loadedFont;
	};
}