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feat: Arabic/Farsi/Urdu glyphs in built-in UI fonts - PR 2/3 (#2596)

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Husam Younis
2026-07-13 22:35:47 +03:00
committed by GitHub
parent fae3423dec
commit 2a19eb9e0d
10 changed files with 9083 additions and 5926 deletions
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lib/EpdFont/scripts/convert-builtin-fonts.sh
+33 -3
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@@ -31,19 +31,48 @@ done
UI_FONT_SIZES=(10 12)
UI_FONT_STYLES=("Regular" "Bold")
# Arabic glyphs for UI text (menus, file browser titles). The built-in fonts
# must cover the *output* of MiniBidi's do_shape() — contextual presentation
# forms — not base letters, or shaped UI text silently drops glyphs.
# Curated for firmware-size budget: core Arabic (Presentation Forms-B,
# incl. the Lam-Alef ligature forms) plus the Farsi/Urdu extra letters'
# Presentation Forms-A blocks, the few characters shaping leaves at their
# base codepoint, Arabic punctuation, and both digit sets. No harakat and
# no Sindhi/Pashto/Kurdish forms — book text gets those from SD-card fonts.
ARABIC_INTERVALS=(
--additional-intervals 0x060C,0x060C # Arabic comma
--additional-intervals 0x061B,0x061B # Arabic semicolon
--additional-intervals 0x061F,0x061F # Arabic question mark
--additional-intervals 0x0621,0x0621 # hamza (non-joining, never shaped)
--additional-intervals 0x0640,0x0640 # tatweel
--additional-intervals 0x0660,0x0669 # Arabic-Indic digits
--additional-intervals 0x06BA,0x06BA # noon ghunna base (initial/medial keep base cp)
--additional-intervals 0x06D4,0x06D4 # Urdu full stop
--additional-intervals 0x06F0,0x06F9 # extended Arabic-Indic digits (Farsi/Urdu)
--additional-intervals 0xFB56,0xFB59 # peh (Farsi)
--additional-intervals 0xFB66,0xFB69 # tteh (Urdu)
--additional-intervals 0xFB7A,0xFB7D # tcheh (Farsi)
--additional-intervals 0xFB88,0xFB95 # ddal, jeh, rreh (Urdu), keheh, gaf (Farsi/Urdu)
--additional-intervals 0xFB9E,0xFB9F # noon ghunna isolated/final (Urdu)
--additional-intervals 0xFBA6,0xFBB1 # heh goal, heh doachashmee, yeh barree(+hamza) (Urdu)
--additional-intervals 0xFBFC,0xFBFF # farsi yeh (Farsi/Urdu)
--additional-intervals 0xFE80,0xFEFC # Presentation Forms-B: core Arabic + Lam-Alef
)
for size in ${UI_FONT_SIZES[@]}; do
for style in ${UI_FONT_STYLES[@]}; do
font_name="ubuntu_${size}_$(echo $style | tr '[:upper:]' '[:lower:]')"
font_path="../builtinFonts/source/Ubuntu/Ubuntu-${style}.ttf"
hebrew_path="../builtinFonts/source/NotoSansHebrew/NotoSansHebrew-${style}.ttf"
arabic_path="../builtinFonts/source/NotoSansArabic/NotoSansArabic-${style}.ttf"
# Ubuntu lacks the Latin Extended Additional block (U+1EA0-U+1EF9) used for
# Vietnamese tone marks. Append a Vietnamese-only Ubuntu cut so those glyphs
# are filled from it while every glyph Ubuntu already has stays unchanged
# (fontstack is ordered by descending priority).
viet_path="../builtinFonts/source/Ubuntu/Ubuntu-Vietnamese-${style}.ttf"
output_path="../builtinFonts/${font_name}.h"
python fontconvert.py $font_name $size $font_path $hebrew_path $viet_path \
--additional-intervals 0x05D0,0x05EA > $output_path
python fontconvert.py $font_name $size $font_path $hebrew_path $arabic_path $viet_path \
--additional-intervals 0x05D0,0x05EA "${ARABIC_INTERVALS[@]}" > $output_path
echo "Generated $output_path"
done
done
@@ -51,7 +80,8 @@ done
python fontconvert.py notosans_8_regular 8 \
../builtinFonts/source/NotoSans/NotoSans-Regular.ttf \
../builtinFonts/source/NotoSansHebrew/NotoSansHebrew-Regular.ttf \
--additional-intervals 0x05D0,0x05EA > ../builtinFonts/notosans_8_regular.h
../builtinFonts/source/NotoSansArabic/NotoSansArabic-Regular.ttf \
--additional-intervals 0x05D0,0x05EA "${ARABIC_INTERVALS[@]}" > ../builtinFonts/notosans_8_regular.h
echo ""
echo "Running compression verification..."