/usr/lib/python2.7/dist-packages/FontTools/fontTools/ttLib/tables/_h_m_t_x.py is in fonttools 3.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
from fontTools.misc.textTools import safeEval
from . import DefaultTable
import sys
import array
import warnings
class table__h_m_t_x(DefaultTable.DefaultTable):
headerTag = 'hhea'
advanceName = 'width'
sideBearingName = 'lsb'
numberOfMetricsName = 'numberOfHMetrics'
def decompile(self, data, ttFont):
numGlyphs = ttFont['maxp'].numGlyphs
numberOfMetrics = int(getattr(ttFont[self.headerTag], self.numberOfMetricsName))
if numberOfMetrics > numGlyphs:
numberOfMetrics = numGlyphs # We warn later.
# Note: advanceWidth is unsigned, but we read/write as signed.
metrics = array.array("h", data[:4 * numberOfMetrics])
if sys.byteorder != "big":
metrics.byteswap()
data = data[4 * numberOfMetrics:]
numberOfSideBearings = numGlyphs - numberOfMetrics
sideBearings = array.array("h", data[:2 * numberOfSideBearings])
data = data[2 * numberOfSideBearings:]
if sys.byteorder != "big":
sideBearings.byteswap()
if data:
warnings.warn("too much 'hmtx'/'vmtx' table data")
self.metrics = {}
glyphOrder = ttFont.getGlyphOrder()
for i in range(numberOfMetrics):
glyphName = glyphOrder[i]
self.metrics[glyphName] = list(metrics[i*2:i*2+2])
lastAdvance = metrics[-2]
for i in range(numberOfSideBearings):
glyphName = glyphOrder[i + numberOfMetrics]
self.metrics[glyphName] = [lastAdvance, sideBearings[i]]
def compile(self, ttFont):
metrics = []
for glyphName in ttFont.getGlyphOrder():
metrics.append(self.metrics[glyphName])
lastAdvance = metrics[-1][0]
lastIndex = len(metrics)
while metrics[lastIndex-2][0] == lastAdvance:
lastIndex -= 1
if lastIndex <= 1:
# all advances are equal
lastIndex = 1
break
additionalMetrics = metrics[lastIndex:]
additionalMetrics = [sb for advance, sb in additionalMetrics]
metrics = metrics[:lastIndex]
setattr(ttFont[self.headerTag], self.numberOfMetricsName, len(metrics))
allMetrics = []
for item in metrics:
allMetrics.extend(item)
allMetrics = array.array("h", allMetrics)
if sys.byteorder != "big":
allMetrics.byteswap()
data = allMetrics.tostring()
additionalMetrics = array.array("h", additionalMetrics)
if sys.byteorder != "big":
additionalMetrics.byteswap()
data = data + additionalMetrics.tostring()
return data
def toXML(self, writer, ttFont):
names = sorted(self.metrics.keys())
for glyphName in names:
advance, sb = self.metrics[glyphName]
writer.simpletag("mtx", [
("name", glyphName),
(self.advanceName, advance),
(self.sideBearingName, sb),
])
writer.newline()
def fromXML(self, name, attrs, content, ttFont):
if not hasattr(self, "metrics"):
self.metrics = {}
if name == "mtx":
self.metrics[attrs["name"]] = [safeEval(attrs[self.advanceName]),
safeEval(attrs[self.sideBearingName])]
def __delitem__(self, glyphName):
del self.metrics[glyphName]
def __getitem__(self, glyphName):
return self.metrics[glyphName]
def __setitem__(self, glyphName, advance_sb_pair):
self.metrics[glyphName] = tuple(advance_sb_pair)
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