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| import os | |
| import argparse | |
| import logging | |
| from fontTools.misc.cliTools import makeOutputFileName | |
| from fontTools.ttLib import TTFont | |
| from fontTools.pens.qu2cuPen import Qu2CuPen | |
| from fontTools.pens.ttGlyphPen import TTGlyphPen | |
| import fontTools | |
| logger = logging.getLogger("fontTools.qu2cu") | |
| def _font_to_cubic(input_path, output_path=None, **kwargs): | |
| font = TTFont(input_path) | |
| logger.info("Converting curves for %s", input_path) | |
| stats = {} if kwargs["dump_stats"] else None | |
| qu2cu_kwargs = { | |
| "stats": stats, | |
| "max_err": kwargs["max_err_em"] * font["head"].unitsPerEm, | |
| "all_cubic": kwargs["all_cubic"], | |
| } | |
| assert "gvar" not in font, "Cannot convert variable font" | |
| glyphSet = font.getGlyphSet() | |
| glyphOrder = font.getGlyphOrder() | |
| glyf = font["glyf"] | |
| for glyphName in glyphOrder: | |
| glyph = glyphSet[glyphName] | |
| ttpen = TTGlyphPen(glyphSet) | |
| pen = Qu2CuPen(ttpen, **qu2cu_kwargs) | |
| glyph.draw(pen) | |
| glyf[glyphName] = ttpen.glyph(dropImpliedOnCurves=True) | |
| font["head"].glyphDataFormat = 1 | |
| if kwargs["dump_stats"]: | |
| logger.info("Stats: %s", stats) | |
| logger.info("Saving %s", output_path) | |
| font.save(output_path) | |
| def main(args=None): | |
| """Convert an OpenType font from quadratic to cubic curves""" | |
| parser = argparse.ArgumentParser(prog="qu2cu") | |
| parser.add_argument("--version", action="version", version=fontTools.__version__) | |
| parser.add_argument( | |
| "infiles", | |
| nargs="+", | |
| metavar="INPUT", | |
| help="one or more input TTF source file(s).", | |
| ) | |
| parser.add_argument("-v", "--verbose", action="count", default=0) | |
| parser.add_argument( | |
| "-e", | |
| "--conversion-error", | |
| type=float, | |
| metavar="ERROR", | |
| default=0.001, | |
| help="maxiumum approximation error measured in EM (default: 0.001)", | |
| ) | |
| parser.add_argument( | |
| "-c", | |
| "--all-cubic", | |
| default=False, | |
| action="store_true", | |
| help="whether to only use cubic curves", | |
| ) | |
| output_parser = parser.add_mutually_exclusive_group() | |
| output_parser.add_argument( | |
| "-o", | |
| "--output-file", | |
| default=None, | |
| metavar="OUTPUT", | |
| help=("output filename for the converted TTF."), | |
| ) | |
| output_parser.add_argument( | |
| "-d", | |
| "--output-dir", | |
| default=None, | |
| metavar="DIRECTORY", | |
| help="output directory where to save converted TTFs", | |
| ) | |
| options = parser.parse_args(args) | |
| if not options.verbose: | |
| level = "WARNING" | |
| elif options.verbose == 1: | |
| level = "INFO" | |
| else: | |
| level = "DEBUG" | |
| logging.basicConfig(level=level) | |
| if len(options.infiles) > 1 and options.output_file: | |
| parser.error("-o/--output-file can't be used with multile inputs") | |
| if options.output_dir: | |
| output_dir = options.output_dir | |
| if not os.path.exists(output_dir): | |
| os.mkdir(output_dir) | |
| elif not os.path.isdir(output_dir): | |
| parser.error("'%s' is not a directory" % output_dir) | |
| output_paths = [ | |
| os.path.join(output_dir, os.path.basename(p)) for p in options.infiles | |
| ] | |
| elif options.output_file: | |
| output_paths = [options.output_file] | |
| else: | |
| output_paths = [ | |
| makeOutputFileName(p, overWrite=True, suffix=".cubic") | |
| for p in options.infiles | |
| ] | |
| kwargs = dict( | |
| dump_stats=options.verbose > 0, | |
| max_err_em=options.conversion_error, | |
| all_cubic=options.all_cubic, | |
| ) | |
| for input_path, output_path in zip(options.infiles, output_paths): | |
| _font_to_cubic(input_path, output_path, **kwargs) | |