def fromwalker(cls, w, **kwArgs):
"""
Returns a new OS_2 object from the specified walker.
>>> fb = OS_2.frombytes
>>> _testingValues[0] == fb(_testingValues[0].binaryString())
True
>>> _testingValues[1] == fb(_testingValues[1].binaryString())
True
"""
ver = w.unpack("H")
assert ver == 5 # caller must be using the right class
v = [ver]
v.extend(w.unpack("H2h"))
v.append(typeflags_v3.TypeFlags.fromwalker(w, **kwArgs))
v.extend(w.unpack("10hH"))
v.append(panose.Panose(w, **kwArgs))
v.append(unicoderanges_v4.UnicodeRanges.fromwalker(w, **kwArgs))
v.append(w.unpack("4s"))
v.append(selection_v4.Selection.fromwalker(w, **kwArgs))
v.extend(w.unpack("2H3h2H"))
v.append(codepageranges_v2.CodePageRanges.fromwalker(w, **kwArgs))
v.extend(w.unpack("2h3H"))
v.extend(n / 20 for n in w.unpack("2H"))
return cls(*v)
def _asV2(obj, **kwArgs):
"""
Convert obj to v2 Panose_fam2
>>> p2 = Panose_fam2.fromnumber(0x02010203030406070801)
>>> p2.stroke
'Gradual/Vertical'
>>> _asV2(p2).stroke
'Gradual/Vertical'
"""
from fontio3.OS_2 import panose
bs = obj.binaryString()
svmap = {0: 0, 1: 1, 2: 3, 3: 4, 4: 5, 5: 6, 6: 7, 7: 8, 8: 9}
sv = bs[5] # re-map stroke variation to new value
svn = svmap.get(sv, 0)
bn = bytes(bs[0:5] + bytes([svn]) + bs[6:])
w = walker.StringWalker(bn)
return panose.Panose(w, os2panver=2)
def fromwalker(cls, w, **kwArgs):
"""
Returns a new OS_2 object from the specified walker.
>>> _testingValues[0] == OS_2.frombytes(_testingValues[0].binaryString())
True
>>> _testingValues[1] == OS_2.frombytes(_testingValues[1].binaryString())
True
"""
ver = w.unpack("H")
assert ver == 0 # caller must be using the right class
v = [ver]
v.extend(w.unpack("H2h"))
v.append(typeflags_v0.TypeFlags.fromwalker(w, **kwArgs))
v.extend(w.unpack("10hH"))
v.append(panose.Panose(w, os2panver=0, **kwArgs))
# 4 longs of zeroes ignored for unicode ranges, not used in v1
w.skip(16)
v.append(w.unpack("4s"))
v.append(selection_v0.Selection.fromwalker(w, **kwArgs))
v.extend(w.unpack("2H"))
return cls(*v)