fontVariations() does not work correctly on Linux

[justvanrossum]

Possibly due to a bug in skia-python: kyamagu/skia-python/issues/112

[justvanrossum]

Or due to me using the skia-python API wrong.

[justvanrossum]

This test script does not give the expected result on Linux: https://github.com/justvanrossum/drawbot-skia/blob/master/tests/apitests/fontVariations.py

drawbot-skia/tests/apitests/fontVariations.py

Lines 1 to 15 in 2eace01

	size(275, 400)
	rect(0, 0, width(), height())
	font("../fonts/MutatorSans.ttf")
	fontSize(100)
	fill(1)
	text("ABCXYZ", (10, 15))
	fontVariations(wght=600)
	text("ABCXYZ", (10, 115))
	variations = fontVariations(wdth=200)
	assert {'wdth': 200, 'wght': 600.0} == variations, variations
	text("ABCXYZ", (10, 215))
	variations = fontVariations(wdth=1000, resetVariations=True)
	assert {'wdth': 1000, 'wght': 0.0} == variations, variations
	text("ABCXYZ", (10, 315))

[justvanrossum]

This appears to be fixed thanks to recent changes to the TextStyle object: I no longer use the skia API to get at the current VF location, and setting is apparently not a problem.