libatures

This is a simple library only intended for applying ligatures to glyph ID runs. If more advanced shaping features are needed, this might not be the right library to use.

API

Look at libatures.h, as it documents the whole API.

Example

FT_Library lib;
FT_Face face;
FT_Init_FreeType(&lib);
FT_New_Face(lib, "JetBrainsMono-Regular.ttf", 0, &face);

LBT_ChainCreator *cc = LBT_new(face);

LBT_tag features[] = { LBT_make_tag("calt"), LBT_make_tag("ccmp") };
LBT_Chain *c = LBT_generate_chain(cc, NULL, NULL, features, 2);

const LBT_Glyph str[] = {855, 1051}; // "->" in Glyph IDs
size_t out_len;
LBT_Glyph* ligated = LBT_apply_chain(c, str, 2, &out_len);
for (size_t i = 0; i < out_len; i++)
  printf("%d ", ligated[i]);
// Outputs "1742 881" which are the Glyph IDs that result in the → glyph