In order to work with LVGL, fonts need to be converted to bitmaps, stored as C arrays. BuffyBox currently uses a combination of the OpenSans font for text and the FontAwesome font for pictograms. For both fonts only limited character ranges are included to reduce the binary size. To (re)generate the C file containing the combined font, run the following command

$ ./regenerate.sh

Below is a short explanation of the different unicode ranges used above.

OpenSans
- Basic Latin (0x0020-0x007F)
- Latin-1 supplement (0x00A0-0x00FF)
- Latin extended A (0x0100-0x017F)
- Greek and Coptic (0x0370-0x03FF)
- General punctuation (0x2000-0x206F)
- Currency symbols (0x20A0-0x20CF)
- Mathematical operators (0x2200-0x22FF)
FontAwesome
- Standard LV_SYMBOL_* glyphs (0xF001,0xF008,0xF00B,0xF00C,0xF00D,0xF011,0xF013,0xF015,0xF019,0xF01C,0xF021,0xF026,0xF027,0xF028,0xF03E,0xF0E0,0xF304,0xF043,0xF048,0xF04B,0xF04C,0xF04D,0xF051,0xF052,0xF053,0xF054,0xF067,0xF068,0xF06E,0xF070,0xF071,0xF074,0xF077,0xF078,0xF079,0xF07B,0xF093,0xF095,0xF0C4,0xF0C5,0xF0C7,0xF0C9,0xF0E7,0xF0EA,0xF0F3,0xF11C,0xF124,0xF158,0xF1EB,0xF240,0xF241,0xF242,0xF243,0xF244,0xF287,0xF293,0xF2ED,0xF55A,0xF7C2,0xF8A2)
- [adjust] (0xF042)
- [arrow-alt-circle-up] (0xF35B)

License

The OpenSans font is licensed under the Apache License 2.0.

The FontAwesome font is licensed under the Open Font License version 1.1.

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