Added font auto-generate script
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src/displayapp/fonts/fix_jetbrains_mono_bold_20_zero.py
Executable file
30
src/displayapp/fonts/fix_jetbrains_mono_bold_20_zero.py
Executable file
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#!/usr/bin/env python
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import sys
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with open('jetbrains_mono_bold_20.c', 'r') as fd:
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src = fd.read()
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zero_area = src.find('U+0030 "0"')
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zero_data_start = src[zero_area:].find('\n') + zero_area + 1
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zero_data_end = src[zero_data_start:].find('\n\n')
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curr = src[zero_data_start:zero_data_start+zero_data_end]
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OLD=""" 0x3f, 0x1f, 0xef, 0x3f, 0x87, 0xe1, 0xf8, 0x7f,
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0xdf, 0xf7, 0xe1, 0xf8, 0x7e, 0x1f, 0xcf, 0x7f,
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0x8f, 0xc0,"""
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NEW=""" 0x3f, 0x1f, 0xef, 0x3f, 0x87, 0xe1, 0xf8, 0x7e,
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0xdf, 0xb7, 0xe1, 0xf8, 0x7e, 0x1f, 0xcf, 0x7f,
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0x8f, 0xc0,"""
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if curr != OLD:
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if curr == NEW:
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print('Already patched')
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sys.exit()
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sys.exit('Target differers from expected data')
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with open('jetbrains_mono_bold_20.c', 'r+') as fd:
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fd.seek(zero_data_start) #NOTE: since they are both the same size, this is allowed. Otherwise more editing needs to happen.
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fd.write(NEW)
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90
src/displayapp/fonts/fonts.json
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src/displayapp/fonts/fonts.json
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{
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"fonts": {
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"jetbrains_mono_bold_20": {
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"sources": [
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{
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"font": "JetBrainsMono-Bold.ttf",
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"range": "0x20-0x7e, 0x410-0x44f"
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},
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{
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"font": "FontAwesome5-Solid+Brands+Regular.woff",
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"range": "0xf293, 0xf294, 0xf244, 0xf240, 0xf242, 0xf243, 0xf241, 0xf54b, 0xf21e, 0xf1e6, 0xf54b, 0xf017, 0xf129, 0xf03a, 0xf185, 0xf560, 0xf001, 0xf3fd, 0xf069, 0xf1fc, 0xf45d, 0xf59f, 0xf5a0, 0xf029, 0xf027, 0xf028, 0xf6a9, 0xf04b, 0xf04c, 0xf048, 0xf051, 0xf095, 0xf3dd, 0xf04d, 0xf2f2, 0xf024, 0xf252, 0xf569, 0xf201, 0xf06e, 0xf015"
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}
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],
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"bpp": 1,
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"size": 20,
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"patches": ["./fix_jetbrains_mono_bold_20_zero.py"]
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},
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"jetbrains_mono_42": {
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"sources": [
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{
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"font": "JetBrainsMono-Regular.ttf",
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"range": "0x25, 0x30-0x3a"
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}
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],
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"bpp": 1,
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"size": 42
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},
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"jetbrains_mono_76": {
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"sources": [
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{
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"font": "JetBrainsMono-Regular.ttf",
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"range": "0x25, 0x2D, 0x2F, 0x30-0x3a"
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}
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],
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"bpp": 1,
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"size": 76
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},
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"jetbrains_mono_extrabold_compressed": {
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"sources": [
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{
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"font": "JetBrainsMono-ExtraBold.ttf",
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"range": "0x30-0x3a"
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}
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],
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"bpp": 1,
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"size": 80
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},
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"open_sans_light": {
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"sources": [
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{
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"font": "open_sans_light.ttf",
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"symbols": "0123456789"
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}
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],
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"bpp": 1,
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"size": 150
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},
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"lv_font_sys_48": {
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"sources": [
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{
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"font": "icons_sys_48.ttf",
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"range": "0xe902, 0xe904-0xe907, 0xe90b-0xe90c"
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}
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],
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"bpp": 1,
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"size": 48
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},
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"lv_font_navi_80": {
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"sources": [
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{
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"font": "navigation.ttf",
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"range": "0xe900-0xe929"
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}
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],
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"bpp": 2,
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"size": 80,
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"compress": true
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}
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},
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"features": {
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"hebrew": {
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"jetbrains_mono_bold_20": [
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{
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"font": "SimpleCLM-Medium.ttf",
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"range": "0x05D0-0x05EA,0x05F3,0x05F4"
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}
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]
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}
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}
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}
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70
src/displayapp/fonts/generate.py
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src/displayapp/fonts/generate.py
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#!/usr/bin/env python
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import io
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import sys
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import json
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import typing
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import os.path
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import argparse
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import subprocess
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class FontArg(object):
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def __init__(self, d):
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self.font = d['font']
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self.range = d.get('range')
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self.symbols = d.get('symbols')
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def gen_lvconv_line(dest: str, size: int, bpp: int, fonts: typing.List[FontArg], compress:bool=False):
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args = ['lv_font_conv', '--size', str(size), '--output', dest, '--bpp', str(bpp), '--format', 'lvgl']
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if not compress:
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args.append('--no-compress')
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for font in fonts:
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args.extend(['--font', font.font])
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if font.range:
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args.extend(['--range', font.range])
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if font.symbols:
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args.extend(['--symbols', font.symbols])
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return args
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def main():
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ap = argparse.ArgumentParser(description='auto generate lvGL font files from fonts')
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ap.add_argument('config', type=str, help='config file to use')
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ap.add_argument('-e', '--enable', type=str, action='append', help='optional feature to enable in font generation', default=[], metavar='features', dest='features')
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ap.add_argument('-f', '--font', type=str, action='append', help='Choose specific fonts to generate (default: all)', default=[])
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args = ap.parse_args()
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if not os.path.exists(args.config):
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sys.exit(f'Error: the config file {args.config} does not exist.')
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if not os.access(args.config, os.R_OK):
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sys.exit(f'Error: the config file {args.config} is not accessable (permissions?).')
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with open(args.config, 'r') as fd:
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data = json.load(fd)
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for enabled_feature in args.features:
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if enabled_feature not in data['features']:
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sys.exit(f'Error: the requested feature {enabled_feature} does not exist in {args.config}.')
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for (name,font) in data['fonts'].items():
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if args.font and name not in args.font:
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continue
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sources = font.pop('sources')
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if 'patches' in font:
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patches = font.pop('patches')
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else:
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patches = None
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for enabled_feature in args.features:
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if name in data['features'][enabled_feature]:
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sources.extend(data['features'][enabled_feature][name])
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font['fonts'] = [FontArg(thing) for thing in sources]
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line = gen_lvconv_line(f'{name}.c', **font)
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subprocess.check_call(line)
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if patches:
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for patch in patches:
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subprocess.check_call(patch)
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if __name__ == '__main__':
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main()
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