/usr/lib/python2.7/dist-packages/FontTools/fontTools/ttLib/tables/_h_h_e_a.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 | from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
from fontTools.misc import sstruct
from fontTools.misc.textTools import safeEval
from . import DefaultTable
hheaFormat = """
> # big endian
tableVersion: 16.16F
ascent: h
descent: h
lineGap: h
advanceWidthMax: H
minLeftSideBearing: h
minRightSideBearing: h
xMaxExtent: h
caretSlopeRise: h
caretSlopeRun: h
caretOffset: h
reserved0: h
reserved1: h
reserved2: h
reserved3: h
metricDataFormat: h
numberOfHMetrics: H
"""
class table__h_h_e_a(DefaultTable.DefaultTable):
# Note: Keep in sync with table__v_h_e_a
dependencies = ['hmtx', 'glyf']
def decompile(self, data, ttFont):
sstruct.unpack(hheaFormat, data, self)
def compile(self, ttFont):
if ttFont.isLoaded('glyf') and ttFont.recalcBBoxes:
self.recalc(ttFont)
return sstruct.pack(hheaFormat, self)
def recalc(self, ttFont):
hmtxTable = ttFont['hmtx']
if 'glyf' in ttFont:
glyfTable = ttFont['glyf']
INFINITY = 100000
advanceWidthMax = 0
minLeftSideBearing = +INFINITY # arbitrary big number
minRightSideBearing = +INFINITY # arbitrary big number
xMaxExtent = -INFINITY # arbitrary big negative number
for name in ttFont.getGlyphOrder():
width, lsb = hmtxTable[name]
advanceWidthMax = max(advanceWidthMax, width)
g = glyfTable[name]
if g.numberOfContours == 0:
continue
if g.numberOfContours < 0 and not hasattr(g, "xMax"):
# Composite glyph without extents set.
# Calculate those.
g.recalcBounds(glyfTable)
minLeftSideBearing = min(minLeftSideBearing, lsb)
rsb = width - lsb - (g.xMax - g.xMin)
minRightSideBearing = min(minRightSideBearing, rsb)
extent = lsb + (g.xMax - g.xMin)
xMaxExtent = max(xMaxExtent, extent)
if xMaxExtent == -INFINITY:
# No glyph has outlines.
minLeftSideBearing = 0
minRightSideBearing = 0
xMaxExtent = 0
self.advanceWidthMax = advanceWidthMax
self.minLeftSideBearing = minLeftSideBearing
self.minRightSideBearing = minRightSideBearing
self.xMaxExtent = xMaxExtent
else:
# XXX CFF recalc...
pass
def toXML(self, writer, ttFont):
formatstring, names, fixes = sstruct.getformat(hheaFormat)
for name in names:
value = getattr(self, name)
writer.simpletag(name, value=value)
writer.newline()
def fromXML(self, name, attrs, content, ttFont):
setattr(self, name, safeEval(attrs["value"]))
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