Tiny TTF

Lightweight TrueType font renderer based on stb_truetype. Enable with LV_USE_TINY_TTF in lv_conf.h.

Tiny TTF font from memory

Render a multi-line label with a 30 px TTF decoded from an embedded byte array.

lv_tiny_ttf_create_data loads the external ubuntu_font byte array at 30 px. A style binds the resulting lv_font_t and centers text, then a label is placed at the center of the active screen showing a four-line greeting drawn with the decoded font.

Tiny TTF font from file

Render a multi-line label with a 30 px TTF opened from the LVGL filesystem.

lv_tiny_ttf_create_file reads Ubuntu-Medium.ttf at 30 px through the filesystem driver registered under drive letter A. A style binds the resulting lv_font_t and centers text, then a label placed at the center of the active screen shows a four-line greeting drawn with the decoded font. The file path requires LV_TINY_TTF_FILE_SUPPORT.

Resize Tiny TTF font with a slider

Rescale a Tiny TTF font live as a slider drives a bound subject.

lv_tiny_ttf_create_data builds a 25 px font from the embedded ubuntu_font array and applies it to a style used by a centered Hello world! label. A slider spanning 5 to 50 is bound through lv_subject_t to a label showing the current value, and an observer calls lv_tiny_ttf_set_size followed by lv_obj_report_style_change whenever the subject updates so the label redraws at the new size.