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ddddddgZddddddddd d d d d d!d"gZd#d$d%d&d'd(gZdZd)Zd*ZdZd)Zd*ZdZ d)Z d*Z d+Z d,Z d,Z!G d-d. d.e"Z#G d/d0 d0Z$e%d1krdd2l&Z&e$e&j'd) Z(e)dj*d3d4 d5e(j+ d6e(j, d7e(j- d8e(j. d9e(j/ d:e(j0 d;e(j1 de(j4 d?e(j5 d@e(j6 dAe(j7 dBe(j8 gD e)e( d2S )Cu1 Module for reading TFM (TeX Font Metrics) files.
The TFM format is described in the TFtoPL WEB source code, whose typeset form
can be found on `CTAN `_.
>>> from fontTools.tfmLib import TFM
>>> tfm = TFM("Tests/tfmLib/data/cmr10.tfm")
>>>
>>> # Accessing an attribute gets you metadata.
>>> tfm.checksum
1274110073
>>> tfm.designsize
10.0
>>> tfm.codingscheme
'TeX text'
>>> tfm.family
'CMR'
>>> tfm.seven_bit_safe_flag
False
>>> tfm.face
234
>>> tfm.extraheader
{}
>>> tfm.fontdimens
{'SLANT': 0.0, 'SPACE': 0.33333396911621094, 'STRETCH': 0.16666698455810547, 'SHRINK': 0.11111164093017578, 'XHEIGHT': 0.4305553436279297, 'QUAD': 1.0000028610229492, 'EXTRASPACE': 0.11111164093017578}
>>> # Accessing a character gets you its metrics.
>>> # “width” is always available, other metrics are available only when
>>> # applicable. All values are relative to “designsize”.
>>> tfm.chars[ord("g")]
{'width': 0.5000019073486328, 'height': 0.4305553436279297, 'depth': 0.1944446563720703, 'italic': 0.013888359069824219}
>>> # Kerning and ligature can be accessed as well.
>>> tfm.kerning[ord("c")]
{104: -0.02777862548828125, 107: -0.02777862548828125}
>>> tfm.ligatures[ord("f")]
{105: ('LIG', 12), 102: ('LIG', 11), 108: ('LIG', 13)}
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lf: h # length of the entire file, in words
lh: h # length of the header data, in words
bc: h # smallest character code in the font
ec: h # largest character code in the font
nw: h # number of words in the width table
nh: h # number of words in the height table
nd: h # number of words in the depth table
ni: h # number of words in the italic correction table
nl: h # number of words in the ligature/kern table
nk: h # number of words in the kern table
ne: h # number of words in the extensible character table
np: h # number of font parameter words
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