diff options
Diffstat (limited to 'src/resources/generate-fonts.py')
-rwxr-xr-x | src/resources/generate-fonts.py | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/src/resources/generate-fonts.py b/src/resources/generate-fonts.py new file mode 100755 index 00000000..20408166 --- /dev/null +++ b/src/resources/generate-fonts.py @@ -0,0 +1,80 @@ +#!/usr/bin/env python + +import io +import sys +import json +import shutil +import typing +import os.path +import argparse +import subprocess + +class Source(object): + def __init__(self, d): + self.file = d['file'] + if not os.path.exists(self.file): + self.file = os.path.join(os.path.dirname(sys.argv[0]), self.file) + self.range = d.get('range') + self.symbols = d.get('symbols') + + +def gen_lvconv_line(lv_font_conv: str, dest: str, size: int, bpp: int, format: str, sources: typing.List[Source], compress:bool=False): + if format != "lvgl" and format != "bin": + format = "bin" if dest.lower().endswith(".bin") else "lvgl" + + args = [lv_font_conv, '--size', str(size), '--output', dest, '--bpp', str(bpp), '--format', format] + if not compress: + args.append('--no-compress') + for source in sources: + args.extend(['--font', source.file]) + if source.range: + args.extend(['--range', source.range]) + if source.symbols: + args.extend(['--symbols', source.symbols]) + + return args + +def main(): + ap = argparse.ArgumentParser(description='auto generate LVGL font files from fonts') + ap.add_argument('config', type=str, help='config file to use') + ap.add_argument('-f', '--font', type=str, action='append', help='Choose specific fonts to generate (default: all)', default=[]) + ap.add_argument('--lv-font-conv', type=str, help='Path to "lv_font_conf" executable', default="lv_font_conv") + args = ap.parse_args() + + if not shutil.which(args.lv_font_conv): + sys.exit(f"Missing lv_font_conv. Make sure it's findable (in PATH) or specify it manually") + if not os.path.exists(args.config): + sys.exit(f'Error: the config file {args.config} does not exist.') + if not os.access(args.config, os.R_OK): + sys.exit(f'Error: the config file {args.config} is not accessible (permissions?).') + with open(args.config, 'r') as fd: + data = json.load(fd) + + fonts_to_run = set(data.keys()) + + if args.font: + enabled_fonts = set() + for font in args.font: + enabled_fonts.add(font[:-2] if font.endswith('.c') else font) + d = enabled_fonts.difference(fonts_to_run) + if d: + print(f'Warning: requested font{"s" if len(d)>1 else ""} missing: {" ".join(d)}') + fonts_to_run = fonts_to_run.intersection(enabled_fonts) + + for name in fonts_to_run: + font = data[name] + sources = font.pop('sources') + patches = font.pop('patches') if 'patches' in font else [] + font['sources'] = [Source(thing) for thing in sources] + extension = 'c' if font['format'] != 'bin' else 'bin' + font.pop('target_path') + line = gen_lvconv_line(args.lv_font_conv, f'{name}.{extension}', **font) + subprocess.check_call(line) + if patches: + for patch in patches: + subprocess.check_call(['/usr/bin/env', 'patch', name+'.'+extension, patch]) + + + +if __name__ == '__main__': + main() |