77 lines
1.8 KiB
Python
77 lines
1.8 KiB
Python
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#! /usr/bin/env python3
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# Example script to remove overlaps in TTF using skia-pathops
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import sys
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from fontTools.ttLib import TTFont
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from fontTools.pens.recordingPen import DecomposingRecordingPen
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from fontTools.pens.ttGlyphPen import TTGlyphPen
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try:
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import pathops
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except ImportError:
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sys.exit(
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"This script requires the skia-pathops module. "
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"`pip install skia-pathops` and then retry."
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)
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def skpath_from_simple_glyph(glyphName, glyphSet):
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path = pathops.Path()
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pathPen = path.getPen()
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glyphSet[glyphName].draw(pathPen)
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return path
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def skpath_from_composite_glyph(glyphName, glyphSet):
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# record TTGlyph outlines without components
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dcPen = DecomposingRecordingPen(glyphSet)
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glyphSet[glyphName].draw(dcPen)
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# replay recording onto a skia-pathops Path
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path = pathops.Path()
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pathPen = path.getPen()
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dcPen.replay(pathPen)
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return path
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def tt_glyph_from_skpath(path):
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ttPen = TTGlyphPen(None)
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path.draw(ttPen)
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return ttPen.glyph()
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def main():
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if len(sys.argv) != 3:
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print("usage: remove-overlaps.py fontfile.ttf outfile.ttf")
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sys.exit(1)
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src = sys.argv[1]
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dst = sys.argv[2]
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with TTFont(src) as f:
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glyfTable = f["glyf"]
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glyphSet = f.getGlyphSet()
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for glyphName in glyphSet.keys():
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if glyfTable[glyphName].isComposite():
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path = skpath_from_composite_glyph(glyphName, glyphSet)
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else:
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path = skpath_from_simple_glyph(glyphName, glyphSet)
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# duplicate path
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path2 = pathops.Path(path)
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# remove overlaps
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path2.simplify()
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# replace TTGlyph if simplified copy is different
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if path2 != path:
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glyfTable[glyphName] = tt_glyph_from_skpath(path2)
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f.save(dst)
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if __name__ == "__main__":
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main()
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