engine/include/resources/font.h

#pragma once

#include <string>
#include <map>
#include <vector>
#include <memory>

#include <stb_truetype.h>

namespace engine {

class Font {
   public:
    Font(const std::string& path);
    ~Font();
    Font(const Font&) = delete;
    Font& operator=(const Font&) = delete;

    std::unique_ptr<std::vector<uint8_t>> GetTextBitmap(const std::string& text, float height_px, int& width_out, int& height_out);

   private:
    std::unique_ptr<stbtt_fontinfo> font_info_{};
    std::unique_ptr<std::vector<uint8_t>> font_buffer_{};
    std::map<int, int> unicode_to_glyph_{};

    int GetGlyphIndex(int unicode_codepoint);
};

} // namespace engine