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from fontTools.misc.py23 import *
from fontTools.misc.testTools import FakeFont, getXML, parseXML
from fontTools.misc.textTools import deHexStr, hexStr
from fontTools.ttLib import TTLibError, getTableClass, getTableModule, newTable
import unittest
from fontTools.ttLib.tables.TupleVariation import TupleVariation
gvarClass = getTableClass("gvar")
GVAR_DATA = deHexStr(
"0001 0000 " # 0: majorVersion=1 minorVersion=0
"0002 0000 " # 4: axisCount=2 sharedTupleCount=0
"0000001C " # 8: offsetToSharedTuples=28
"0003 0000 " # 12: glyphCount=3 flags=0
"0000001C " # 16: offsetToGlyphVariationData=28
"0000 0000 000C 002F " # 20: offsets=[0,0,12,47], times 2: [0,0,24,94],
# # +offsetToGlyphVariationData: [28,28,52,122]
#
# 28: Glyph variation data for glyph #0, ".notdef"
# ------------------------------------------------
# (no variation data for this glyph)
#
# 28: Glyph variation data for glyph #1, "space"
# ----------------------------------------------
"8001 000C " # 28: tupleVariationCount=1|TUPLES_SHARE_POINT_NUMBERS, offsetToData=12(+28=40)
"000A " # 32: tvHeader[0].variationDataSize=10
"8000 " # 34: tvHeader[0].tupleIndex=EMBEDDED_PEAK
"0000 2CCD " # 36: tvHeader[0].peakTuple={wght:0.0, wdth:0.7}
"00 " # 40: all points
"03 01 02 03 04 " # 41: deltaX=[1, 2, 3, 4]
"03 0b 16 21 2C " # 46: deltaY=[11, 22, 33, 44]
"00 " # 51: padding
#
# 52: Glyph variation data for glyph #2, "I"
# ------------------------------------------
"8002 001c " # 52: tupleVariationCount=2|TUPLES_SHARE_POINT_NUMBERS, offsetToData=28(+52=80)
"0012 " # 56: tvHeader[0].variationDataSize=18
"C000 " # 58: tvHeader[0].tupleIndex=EMBEDDED_PEAK|INTERMEDIATE_REGION
"2000 0000 " # 60: tvHeader[0].peakTuple={wght:0.5, wdth:0.0}
"0000 0000 " # 64: tvHeader[0].intermediateStart={wght:0.0, wdth:0.0}
"4000 0000 " # 68: tvHeader[0].intermediateEnd={wght:1.0, wdth:0.0}
"0016 " # 72: tvHeader[1].variationDataSize=22
"A000 " # 74: tvHeader[1].tupleIndex=EMBEDDED_PEAK|PRIVATE_POINTS
"C000 3333 " # 76: tvHeader[1].peakTuple={wght:-1.0, wdth:0.8}
"00 " # 80: all points
"07 03 01 04 01 " # 81: deltaX.len=7, deltaX=[3, 1, 4, 1,
"05 09 02 06 " # 86: 5, 9, 2, 6]
"07 03 01 04 01 " # 90: deltaY.len=7, deltaY=[3, 1, 4, 1,
"05 09 02 06 " # 95: 5, 9, 2, 6]
"06 " # 99: 6 points
"05 00 01 03 01 " # 100: runLen=5(+1=6); delta-encoded run=[0, 1, 4, 5,
"01 01 " # 105: 6, 7]
"05 f8 07 fc 03 fe 01 " # 107: deltaX.len=5, deltaX=[-8,7,-4,3,-2,1]
"05 a8 4d 2c 21 ea 0b " # 114: deltaY.len=5, deltaY=[-88,77,44,33,-22,11]
"00" # 121: padding
) # 122: <end>
assert len(GVAR_DATA) == 122
GVAR_VARIATIONS = {
".notdef": [
],
"space": [
TupleVariation(
{"wdth": (0.0, 0.7000122, 0.7000122)},
[(1, 11), (2, 22), (3, 33), (4, 44)]),
],
"I": [
TupleVariation(
{"wght": (0.0, 0.5, 1.0)},
[(3,3), (1,1), (4,4), (1,1), (5,5), (9,9), (2,2), (6,6)]),
TupleVariation(
{"wght": (-1.0, -1.0, 0.0), "wdth": (0.0, 0.7999878, 0.7999878)},
[(-8,-88), (7,77), None, None, (-4,44), (3,33), (-2,-22), (1,11)]),
],
}
GVAR_XML = [
'<version value="1"/>',
'<reserved value="0"/>',
'<glyphVariations glyph="I">',
' <tuple>',
' <coord axis="wght" min="0.0" value="0.5" max="1.0"/>',
' <delta pt="0" x="3" y="3"/>',
' <delta pt="1" x="1" y="1"/>',
' <delta pt="2" x="4" y="4"/>',
' <delta pt="3" x="1" y="1"/>',
' <delta pt="4" x="5" y="5"/>',
' <delta pt="5" x="9" y="9"/>',
' <delta pt="6" x="2" y="2"/>',
' <delta pt="7" x="6" y="6"/>',
' </tuple>',
' <tuple>',
' <coord axis="wght" value="-1.0"/>',
' <coord axis="wdth" value="0.8"/>',
' <delta pt="0" x="-8" y="-88"/>',
' <delta pt="1" x="7" y="77"/>',
' <delta pt="4" x="-4" y="44"/>',
' <delta pt="5" x="3" y="33"/>',
' <delta pt="6" x="-2" y="-22"/>',
' <delta pt="7" x="1" y="11"/>',
' </tuple>',
'</glyphVariations>',
'<glyphVariations glyph="space">',
' <tuple>',
' <coord axis="wdth" value="0.7"/>',
' <delta pt="0" x="1" y="11"/>',
' <delta pt="1" x="2" y="22"/>',
' <delta pt="2" x="3" y="33"/>',
' <delta pt="3" x="4" y="44"/>',
' </tuple>',
'</glyphVariations>',
]
GVAR_DATA_EMPTY_VARIATIONS = deHexStr(
"0001 0000 " # 0: majorVersion=1 minorVersion=0
"0002 0000 " # 4: axisCount=2 sharedTupleCount=0
"0000001c " # 8: offsetToSharedTuples=28
"0003 0000 " # 12: glyphCount=3 flags=0
"0000001c " # 16: offsetToGlyphVariationData=28
"0000 0000 0000 0000" # 20: offsets=[0, 0, 0, 0]
) # 28: <end>
def hexencode(s):
h = hexStr(s).upper()
return ' '.join([h[i:i+2] for i in range(0, len(h), 2)])
class GVARTableTest(unittest.TestCase):
def assertVariationsAlmostEqual(self, vars1, vars2):
self.assertSetEqual(set(vars1.keys()), set(vars2.keys()))
for glyphName, variations1 in vars1.items():
variations2 = vars2[glyphName]
self.assertEqual(len(variations1), len(variations2))
for (v1, v2) in zip(variations1, variations2):
self.assertSetEqual(set(v1.axes), set(v2.axes))
for axisTag, support1 in v1.axes.items():
support2 = v2.axes[axisTag]
self.assertEqual(len(support1), len(support2))
for s1, s2 in zip(support1, support2):
self.assertAlmostEqual(s1, s2)
self.assertEqual(v1.coordinates, v2.coordinates)
def makeFont(self, variations):
glyphs=[".notdef", "space", "I"]
Axis = getTableModule("fvar").Axis
Glyph = getTableModule("glyf").Glyph
glyf, fvar, gvar = newTable("glyf"), newTable("fvar"), newTable("gvar")
font = FakeFont(glyphs)
font.tables = {"glyf": glyf, "gvar": gvar, "fvar": fvar}
glyf.glyphs = {glyph: Glyph() for glyph in glyphs}
glyf.glyphs["I"].coordinates = [(10, 10), (10, 20), (20, 20), (20, 10)]
fvar.axes = [Axis(), Axis()]
fvar.axes[0].axisTag, fvar.axes[1].axisTag = "wght", "wdth"
gvar.variations = variations
return font, gvar
def test_compile(self):
font, gvar = self.makeFont(GVAR_VARIATIONS)
self.assertEqual(hexStr(gvar.compile(font)), hexStr(GVAR_DATA))
def test_compile_noVariations(self):
font, gvar = self.makeFont({})
self.assertEqual(hexStr(gvar.compile(font)),
hexStr(GVAR_DATA_EMPTY_VARIATIONS))
def test_compile_emptyVariations(self):
font, gvar = self.makeFont({".notdef": [], "space": [], "I": []})
self.assertEqual(hexStr(gvar.compile(font)),
hexStr(GVAR_DATA_EMPTY_VARIATIONS))
def test_decompile(self):
font, gvar = self.makeFont({})
gvar.decompile(GVAR_DATA, font)
self.assertVariationsAlmostEqual(gvar.variations, GVAR_VARIATIONS)
def test_decompile_noVariations(self):
font, gvar = self.makeFont({})
gvar.decompile(GVAR_DATA_EMPTY_VARIATIONS, font)
self.assertEqual(gvar.variations,
{".notdef": [], "space": [], "I": []})
def test_fromXML(self):
font, gvar = self.makeFont({})
for name, attrs, content in parseXML(GVAR_XML):
gvar.fromXML(name, attrs, content, ttFont=font)
self.assertVariationsAlmostEqual(
gvar.variations,
{g:v for g,v in GVAR_VARIATIONS.items() if v}
)
def test_toXML(self):
font, gvar = self.makeFont(GVAR_VARIATIONS)
self.assertEqual(getXML(gvar.toXML, font), GVAR_XML)
def test_compileOffsets_shortFormat(self):
self.assertEqual((deHexStr("00 00 00 02 FF C0"), 0),
gvarClass.compileOffsets_([0, 4, 0x1ff80]))
def test_compileOffsets_longFormat(self):
self.assertEqual((deHexStr("00 00 00 00 00 00 00 04 CA FE BE EF"), 1),
gvarClass.compileOffsets_([0, 4, 0xCAFEBEEF]))
def test_decompileOffsets_shortFormat(self):
decompileOffsets = gvarClass.decompileOffsets_
data = deHexStr("00 11 22 33 44 55 66 77 88 99 aa bb")
self.assertEqual(
[2*0x0011, 2*0x2233, 2*0x4455, 2*0x6677, 2*0x8899, 2*0xaabb],
list(decompileOffsets(data, tableFormat=0, glyphCount=5)))
def test_decompileOffsets_longFormat(self):
decompileOffsets = gvarClass.decompileOffsets_
data = deHexStr("00 11 22 33 44 55 66 77 88 99 aa bb")
self.assertEqual(
[0x00112233, 0x44556677, 0x8899aabb],
list(decompileOffsets(data, tableFormat=1, glyphCount=2)))
if __name__ == "__main__":
import sys
sys.exit(unittest.main())
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