1.2 KiB
Tiny TTF font engine
Usage
Use https://github.com/nothings/stb to render TrueType fonts in LVGL.
When enabled in lv_conf.h with LV_USE_TINY_TTF
lv_tiny_ttf_create_data(data, data_size, font_size) can be used to
create a TTF font instance at the specified font size. You can then
use that font anywhere lv_font_t is accepted.
By default, the TTF or OTF file must be embedded as an array, either in a header, or loaded into RAM in order to function.
However, if LV_TINY_TTF_FILE_SUPPORT is enabled,
lv_tiny_ttf_create_file(path, font_size) will also be available,
allowing tiny_ttf to stream from a file. The file must remain open the
entire time the font is being used, and streaming on demand may be
considerably slower.
After a font is created, you can change the font size in pixels by using
lv_tiny_ttf_set_size(font, font_size).
By default, a font will use up to 4KB of cache to speed up rendering
glyphs. This maximum can be changed by using
lv_tiny_ttf_create_data_ex(data, data_size, font_size, cache_size)
or lv_tiny_ttf_create_file_ex(path, font_size, cache_size) (when
available). The cache size is indicated in bytes.
API
.. doxygenfile:: lv_tiny_ttf.h
:project: lvgl