import matplotlib.type1font as t1f

import os.path

import difflib

def test_Type1Font():

filename = os.path.join(os.path.dirname(__file__), 'cmr10.pfb')

font = t1f.Type1Font(filename)

slanted = font.transform({'slant': 1})

condensed = font.transform({'extend': 0.5})

with open(filename, 'rb') as fd:

rawdata = fd.read()

assert font.parts[0] == rawdata[0x0006:0x10c5]

assert font.parts[1] == rawdata[0x10cb:0x897f]

assert font.parts[2] == rawdata[0x8985:0x8ba6]

assert font.parts[1:] == slanted.parts[1:]

assert font.parts[1:] == condensed.parts[1:]

differ = difflib.Differ()

diff = list(differ.compare(

font.parts[0].decode('latin-1').splitlines(),

slanted.parts[0].decode('latin-1').splitlines()))

for line in (

# Removes UniqueID

'- FontDirectory/CMR10 known{/CMR10 findfont dup/UniqueID known{dup',

'+ FontDirectory/CMR10 known{/CMR10 findfont dup',

# Changes the font name

'- /FontName /CMR10 def',

'+ /FontName /CMR10_Slant_1000 def',

# Alters FontMatrix

'- /FontMatrix [0.001 0 0 0.001 0 0 ]readonly def',

'+ /FontMatrix [0.001 0 0.001 0.001 0 0]readonly def',

# Alters ItalicAngle

'- /ItalicAngle 0 def',

'+ /ItalicAngle -45.0 def'):

assert line in diff, 'diff to slanted font must contain %s' % line

diff = list(differ.compare(

font.parts[0].decode('latin-1').splitlines(),

condensed.parts[0].decode('latin-1').splitlines()))

for line in (

# Removes UniqueID

'- FontDirectory/CMR10 known{/CMR10 findfont dup/UniqueID known{dup',

'+ FontDirectory/CMR10 known{/CMR10 findfont dup',

# Changes the font name

'- /FontName /CMR10 def',

'+ /FontName /CMR10_Extend_500 def',

# Alters FontMatrix

'- /FontMatrix [0.001 0 0 0.001 0 0 ]readonly def',

'+ /FontMatrix [0.0005 0 0 0.001 0 0]readonly def'):

assert line in diff, 'diff to condensed font must contain %s' % line

def test_overprecision():

# We used to output too many digits in FontMatrix entries and

# ItalicAngle, which could make Type-1 parsers unhappy.

filename = os.path.join(os.path.dirname(__file__), 'cmr10.pfb')

font = t1f.Type1Font(filename)

slanted = font.transform({'slant': .167})

lines = slanted.parts[0].decode('ascii').splitlines()

matrix, = [line[line.index('[')+1:line.index(']')]

for line in lines if '/FontMatrix' in line]

angle, = [word

for line in lines if '/ItalicAngle' in line

for word in line.split() if word[0] in '-0123456789']

# the following used to include 0.00016700000000000002

assert matrix == '0.001 0 0.000167 0.001 0 0'

# and here we had -9.48090361795083

assert angle == '-9.4809'