86 lines
2.4 KiB
C++
86 lines
2.4 KiB
C++
#pragma once
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/*
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* Copyright (C) 2024 Brett Terpstra
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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#ifndef BLT_WITH_GRAPHICS_FONT_H
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#define BLT_WITH_GRAPHICS_FONT_H
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#include <ft2build.h>
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#include FT_FREETYPE_H
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#include <string>
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#include <string_view>
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#include <memory>
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#include <optional>
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#include "blt/std/types.h"
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#include <blt/math/vectors.h>
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namespace blt::gfx::font
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{
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extern const unsigned int default_font_compressed_data[];
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extern const unsigned int default_font_compressed_size;
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FT_Library* init();
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inline void destroy(FT_Library* lib)
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{
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FT_Done_FreeType(*lib);
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}
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class font_face_t
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{
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public:
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explicit font_face_t(FT_Library* lib, std::string_view path);
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explicit font_face_t(FT_Library* lib, blt::u8* data, blt::size_t size, bool compressed = false);
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font_face_t& set_pixel_sizes(blt::u32 width, blt::u32 height);
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[[nodiscard]] std::optional<int> load_char(FT_ULong c) const;
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[[nodiscard]] FT_Face* get() const
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{
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return face.get();
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}
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private:
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// decompressed data ownership
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std::shared_ptr<blt::u8> internal_uncompressed_data;
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std::shared_ptr<FT_Face> face;
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};
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struct font_file_t
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{
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font_face_t font;
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blt::u64 character_min_index;
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blt::u64 character_max_index;
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font_file_t(font_face_t font, u64 characterMinIndex, u64 characterMaxIndex);
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};
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struct glyph_t
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{
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blt::vec2ui size;
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blt::vec2ui bearing;
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blt::i64 advance;
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glyph_t(const vec2ui& size, const vec2ui& bearing, blt::i64 advance);
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};
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}
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#endif //BLT_WITH_GRAPHICS_FONT_H
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