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Use only cluster numbers and glyph sizes for grouping glyphs into cells

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See https://github.com/behdad/harfbuzz/issues/615 for discussion
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Kovid Goyal
2017-11-12 20:32:36 +05:30
parent 0bd093ec2e
commit 088087df73
4 changed files with 130 additions and 82 deletions
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kitty_tests/LiberationMono-Regular.ttf Normal file
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15
kitty_tests/fonts.py
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@@ -70,9 +70,12 @@ class Rendering(BaseTest):
self.ae(len(cells), sz)
def test_shaping(self):
flags = [x.get('fl', 0) for x in shape_string('abcd')]
self.ae(flags, [0, 0, 0, 0])
flags = [x.get('fl', 0) for x in shape_string('e\u0347\u0305')]
self.assertEqual(flags, [0, 1, 1])
flags = [x.get('fl', 0) for x in shape_string('===', path='kitty_tests/FiraCode-Medium.otf')]
self.assertEqual(flags, [0, 1, 1])
def groups(text, path=None):
return [x[:2] for x in shape_string(text, path=path)]
self.ae(groups('abcd'), [(1, 1) for i in range(4)])
self.ae(groups('A=>>B!=C', path='kitty_tests/FiraCode-Medium.otf'), [(1, 1), (3, 3), (1, 1), (2, 2), (1, 1)])
self.ae(groups('|\U0001F601|\U0001F64f|\U0001F63a|'), [(1, 1), (2, 1), (1, 1), (2, 1), (1, 1), (2, 1), (1, 1)])
self.ae(groups('He\u0347\u0305llo\u0337,', path='kitty_tests/LiberationMono-Regular.ttf'),
[(1, 1), (1, 3), (1, 1), (1, 1), (1, 2), (1, 1)])