text.h

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#pragma once

 
#include "image.h"
#include "image/font/imstb_truetype.h"
#include <string>
 
namespace satdump
{
    namespace image
    {
        class TextDrawer
        {
        protected:
            struct char_el
            {
                int char_nb;
                int glyph_nb;
                unsigned char *bitmap;
                int cx0, cx1, cy0, cy1, advance, lsb, w, h, ix0, ix1, iy0, iy1, size;
            };
 
            struct font_info
            {
                struct stbtt_fontinfo fontp;
                std::string path;
                int x0, x1, y0, y1, asc, dsc, lg, wdh, hht;
                std::vector<char_el> chars;
            };
 
        protected:
            // font rendering stuff
            font_info font;
            bool has_font = false;
            uint8_t *ttf_buffer;
 
        public:
            ~TextDrawer();

            void init_font(std::string font_path);

            void init_font();

            bool font_ready() { return has_font; }

            int draw_text(Image &img, int xs0, int ys0, std::vector<double> color, int size, std::string text);
        };
    } // namespace image
} // namespace satdump