77 lines
3.3 KiB
C++
77 lines
3.3 KiB
C++
/*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at https://mozilla.org/MPL/2.0/.
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*/
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#pragma once
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#if __has_include("msdfgen.h")
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#include "Scene/AtlasData.hpp"
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#include "IFontAtlasGenerator.hpp"
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#include "Scene/Texture.hpp"
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#include <msdfgen.h>
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#include <msdf-atlas-gen/msdf-atlas-gen.h>
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#include <string>
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#include <optional>
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#include <map>
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#include <variant>
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#define MSDFGEN_AVAILABLE 1
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namespace OpenVulkano::Scene
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{
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struct FontAtlasGeneratorConfig
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{
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static FontAtlasGeneratorConfig sdfDefaultConfig;
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static FontAtlasGeneratorConfig msdfDefaultConfig;
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int glyphSize;
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double miterLimit;
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msdfgen::Range pixelRange;
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};
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template<int Channels>
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class FontAtlasGenerator : public IFontAtlasGenerator
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{
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private:
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using SdfGenerator = msdf_atlas::ImmediateAtlasGenerator<float, 1, msdf_atlas::sdfGenerator,
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msdf_atlas::BitmapAtlasStorage<msdfgen::byte, 1>>;
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using MsdfGenerator = msdf_atlas::ImmediateAtlasGenerator<float, 3, msdf_atlas::msdfGenerator,
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msdf_atlas::BitmapAtlasStorage<msdfgen::byte, 3>>;
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public:
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using Generator = std::conditional<Channels == 1, SdfGenerator, MsdfGenerator>::type;
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using Config = FontAtlasGeneratorConfig;
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static constexpr int channelsCount = (Channels == 1 ? 1 : 4);
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static msdf_atlas::Charset LoadAllGlyphs(const std::variant<std::string, Array<char>>& data);
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FontAtlasGenerator();
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void GenerateAtlas(const std::string& fontFile, const std::set<uint32_t>& charset,
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const std::optional<std::string>& pngOutput = std::nullopt) override;
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void GenerateAtlas(const Array<char>& fontData, int length, const std::set<uint32_t>& charset,
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const std::optional<std::string>& pngOutput = std::nullopt) override;
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void GenerateAtlas(const std::string& fontFile, const msdf_atlas::Charset& charset = msdf_atlas::Charset::ASCII,
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const std::optional<std::string>& pngOutput = std::nullopt);
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void GenerateAtlas(const msdfgen::byte* fontData, int length,
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const msdf_atlas::Charset& charset = msdf_atlas::Charset::ASCII,
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const std::optional<std::string>& pngOutput = std::nullopt);
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void SaveAtlasMetadataInfo(const std::string& outputFile, bool packIntoSingleFile = true) const override;
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void SetGeneratorConfig(const Config& config) { m_config = config; }
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std::shared_ptr<AtlasData> GetAtlasData() const { return m_atlasData; }
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Config& GetGeneratorConfig() { return m_config; }
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private:
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void InitFreetypeFromFile(msdfgen::FreetypeHandle*& ft, msdfgen::FontHandle*& font, const std::string& file);
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void InitFreetypeFromBuffer(msdfgen::FreetypeHandle*& ft, msdfgen::FontHandle*& font,
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const msdfgen::byte* fontData, int length);
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void Generate(msdfgen::FreetypeHandle* ft, msdfgen::FontHandle* font, const msdf_atlas::Charset& chset,
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const std::optional<std::string>& pngOutput);
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void SavePng(const std::string& output) const;
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private:
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Config m_config;
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std::shared_ptr<AtlasData> m_atlasData;
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};
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using SdfFontAtlasGenerator = FontAtlasGenerator<1>;
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using MsdfFontAtlasGenerator = FontAtlasGenerator<3>;
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}
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#endif
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