FreeType

Rasterizes TrueType and OpenType fonts at runtime for LVGL text rendering. Enable with LV_USE_FREETYPE in lv_conf.h.

FreeType bitmap font

Render a label with a 24 px bitmap TTF loaded via FreeType.

lv_freetype_font_create loads Lato-Regular.ttf in LV_FREETYPE_FONT_RENDER_MODE_BITMAP at 24 px with LV_FREETYPE_FONT_STYLE_NORMAL. A style binds the font and centers text, then a label carrying a two-line greeting is placed at the center of the active screen. The path prefix resolves to A: when LV_FREETYPE_USE_LVGL_PORT is enabled and ./ otherwise.

FreeType emoji fallback font

Render a large label whose primary font falls back to a color emoji font.

A 400 px bitmap Lato-Regular.ttf is loaded as the primary font and a 200 px subset of NotoColorEmoji-32.subset.ttf is loaded as font->fallback. A style applies the combined font and centers the text, and a label placed at the center of the active screen shows a greeting ending in an emoji so the fallback glyph is exercised.

FreeType kerning comparison

Compare a FreeType-loaded font rendered with and without kerning.

A static helper builds a 32 px Lato-Regular.ttf font via lv_freetype_font_create_with_info, applies it to a label with lv_obj_set_style_text_font, and centers the label at a given y offset. The public function calls the helper twice, once with LV_FONT_KERNING_NONE above center and once with LV_FONT_KERNING_NORMAL below, both showing the pair test string AVAWAY,ToTaTe.