Optimize fonts

[easyuxd]

Problem:

Optimize font files to conserve limited memory (Pico W has 264 KB internal memory). Uncompressed font file sizes range from 32-117 KB.

Fonts (/gui/fonts):

• libreFranklinBold60.py (117 KB)
• libreFranklinSemiBold29.py (32 KB)
• orangeClockIcons25.py (44 KB)
• orangeClockIcons35.py (88 KB)

TTF font files were converted to .py using font-to-py:
https://github.com/peterhinch/micropython-font-to-py/blob/master/FONT_TO_PY.md

Potential solutions:

• Brotli or Gzip for static compression of .py files: https://css-tricks.com/brotli-static-compression/
• Alternative method of rendering fonts?

[marc3linho]

Another solution could be freezing byte code to save some ram
https://github.com/peterhinch/micropython-nano-gui#appendix-1-freezing-bytecode

[jdlcdl]

Shared w/ easy already, but leaving a note here too.

Maybe peterhinch's explanation of the "-c" argument to font_to_py can be used to reduce the size of font files by including glyphs only for characters that will be used in that font. ie: "sats symbol, space, and 0 thru 9 in the large font for moscowtime?"

https://github.com/peterhinch/micropython-font-to-py/blob/master/FONT_TO_PY.md

[easyuxd]

Thanks, @jdlcdl! With this recommendation I was able to reduce the file sizes drastically.
#30

I'm not sure if this issue should be closed or left open. Further optimizations could probably be made, and I think the Settings UI will need static compression for the HTML/CSS.