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WIP: Implement STAT table

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This commit is contained in:
Sascha Brawer 2016-10-14 17:13:56 +02:00 committed by Behdad Esfahbod
parent 289fd62d8f
commit 59368c424a
5 changed files with 191 additions and 1 deletions
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1
Lib/fontTools/misc/testTools.py
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@ -21,6 +21,7 @@ def parseXML(xmlSnippet):
class FakeFont:
def __init__(self, glyphs):
self.glyphOrder_ = glyphs
self.lazy = False
def getGlyphID(self, name):
return self.glyphOrder_.index(name)

7
Lib/fontTools/ttLib/tables/S_T_A_T_.py Normal file
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@ -0,0 +1,7 @@
from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
from .otBase import BaseTTXConverter
class table_S_T_A_T_(BaseTTXConverter):
pass

165
Lib/fontTools/ttLib/tables/S_T_A_T_test.py Normal file
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@ -0,0 +1,165 @@
from __future__ import print_function, division, absolute_import
from fontTools.misc.py23 import *
from fontTools.misc.testTools import FakeFont, getXML, parseXML
from fontTools.misc.textTools import deHexStr
from fontTools.ttLib import getTableModule, newTable
import unittest
STAT_DATA = deHexStr(
'0001 0000 ' # 0: Version=1.0
'0008 0002 ' # 4: DesignAxisSize=8, DesignAxisCount=2
'0000 0012 ' # 8: OffsetToDesignAxes=18
'0003 0000 0022 ' # 12: AxisValueCount=3, OffsetToAxisValueOffsets=34
'7767 6874 ' # 18: DesignAxis[0].AxisTag='wght'
'012D 0002 ' # 22: DesignAxis[0].NameID=301, .AxisOrdering=2
'5445 5354 ' # 26: DesignAxis[1].AxisTag='TEST'
'012E 0001 ' # 30: DesignAxis[1].NameID=302, .AxisOrdering=1
'0006 001C 0034 ' # 34: AxisValueOffsets = [6, TODO, TODO] (+34)
'0001 0000 0000 ' # 40: AxisValue[0].Format=1, .AxisIndex=0, .Flags=0
'0191 0190 0000 ' # 46: AxisValue[0].ValueNameID=401, .Value=400.0
'0002 0001 0000 ' # 52: AxisValue[1].Format=2, .AxisIndex=1, .Flags=0
'0192 ' # 58: AxisValue[1].ValueNameID=402
'0002 0000 ' # 60: AxisValue[1].NominalValue=2.0
'0001 0000 ' # 64: AxisValue[1].RangeMinValue=1.0
'0003 0000 ' # 68: AxisValue[1].RangeMaxValue=3.0
'0003 0000 0000 ' # 72: AxisValue[2].Format=3, .AxisIndex=0, .Flags=0
'0190 0000 02BC 0000 ' # 78: AxisValue[2].Value=400.0, .LinkedValue=700.0
) # 86: <end>
assert(len(STAT_DATA) == 86)
# Contains junk data for making sure we get our offset decoding right.
# This is an entirely valid STAT table, just more verbose than the minimum.
STAT_DATA_WITH_JUNK = deHexStr(
'0001 0000 ' # 0: Version=1.0
'000C 0002 ' # 4: DesignAxisSize=12, DesignAxisCount=2
'0000 0016 ' # 8: OffsetToDesignAxes=22
'0003 0000 002E ' # 12: AxisValueCount=3, OffsetToAxisValueOffsets=46
'DEAD BEEF ' # 18: <junk>
'7767 6874 ' # 22: DesignAxis[0].AxisTag='wght'
'012D 0002 ' # 26: DesignAxis[0].NameID=301, .AxisOrdering=2
'DEAD BEEF ' # 30: <junk>
'5445 5354 ' # 34: DesignAxis[1].AxisTag='TEST'
'012E 0001 ' # 38: DesignAxis[1].NameID=302, .AxisOrdering=1
'DEAD BEEF ' # 42: <junk>
'000C 001C 0034 ' # 46: AxisValueOffsets = [12, 28, 52] (+46)
'DEAD BEEF DEAD ' # 52: <junk>
'0001 0000 0000 ' # 58: AxisValue[0].Format=1, .AxisIndex=0, .Flags=0
'0191 0190 0000 ' # 64: AxisValue[0].ValueNameID=401, .Value=400.0
'DEAD BEEF ' # 70: <junk>
'0002 0001 0000 ' # 74: AxisValue[1].Format=2, .AxisIndex=1, .Flags=0
'0192 ' # 80: AxisValue[1].ValueNameID=402
'0002 0000 ' # 82: AxisValue[1].NominalValue=2.0
'0001 0000 ' # 86: AxisValue[1].RangeMinValue=1.0
'0003 0000 ' # 86: AxisValue[1].RangeMaxValue=3.0
'DEAD BEEF ' # 94: <junk>
'0003 0000 0000 ' # 98: AxisValue[2].Format=3, .AxisIndex=0, .Flags=0
'0190 0000 02BC 0000 ' # 104: AxisValue[2].Value=400.0, .LinkedValue=700.0
) # 112: <end>
assert(len(STAT_DATA_WITH_JUNK) == 112)
STAT_XML = (
'<Version value="0x00010000"/>'
'<!-- DesignAxisRecordSize=12 -->'
'<!-- DesignAxisCount=2 -->'
'<DesignAxis index="0">'
' <AxisTag value="wght"/>'
' <AxisNameID value="301"/>'
' <AxisOrdering value="2"/>'
'</DesignAxis>'
'<DesignAxis index="1">'
' <AxisTag value="TEST"/>'
' <AxisNameID value="302"/>'
' <AxisOrdering value="1"/>'
'</DesignAxis>'
'<!-- AxisValueCount=3 -->'
'<AxisValue index="0">'
' <Format value="1"/">'
' <AxisIndex value="0"/">'
' <Flags value="0x0"/">'
' <ValueNameID value="401"/">'
' <Value value="400.0"/">'
'</AxisValue>'
'<AxisValue index="1">'
' <Format value="2"/">'
' <AxisIndex value="1"/">'
' <Flags value="0x0"/">'
' <ValueNameID value="402"/">'
' <NominalValue value="2.0"/">'
' <RangeMinValue value="1.0"/">'
' <RangeMaxValue value="3.0"/">'
'</AxisValue>'
'<AxisValue index="2">'
' <Format value="3"/">'
' <AxisIndex value="0"/">'
' <Flags value="0x0"/">'
' <Value value="400.0"/">'
' <LinkedValue value="700.0"/">'
'</AxisValue>'
)
STAT_DATA_AXIS_VALUE_FORMAT3 = deHexStr(
'0001 0000 ' # 0: Version=1.0
'0008 0001 ' # 4: DesignAxisSize=8, DesignAxisCount=1
'0000 0012 ' # 8: OffsetToDesignAxes=18
'0001 ' # 12: AxisValueCount=1
'0000 001A ' # 14: OffsetToAxisValueOffsets=26
'7767 6874 ' # 18: DesignAxis[0].AxisTag='wght'
'0102 ' # 22: DesignAxis[0].AxisNameID=258 'Weight'
'0000 ' # 24: DesignAxis[0].AxisOrdering=0
'0002 ' # 26: AxisValueOffsets=[2] (+26)
'0003 ' # 28: AxisValue[0].Format=3
'0000 0002 ' # 30: AxisValue[0].AxisIndex=0, .Flags=0x2
'0002 ' # 34: AxisValue[0].ValueNameID=2 'Regular'
'0190 0000 ' # 36: AxisValue[0].Value=400.0
'02BC 0000 ' # 40: AxisValue[0].LinkedValue=700.0
) # 44: <end>
assert(len(STAT_DATA_AXIS_VALUE_FORMAT3) == 44)
STAT_XML_AXIS_VALUE_FORMAT3 = (
'<Version value="0x00010000"/>'
'<!-- DesignAxisRecordSize=8 -->'
'<!-- DesignAxisCount=1 -->'
'<DesignAxis index="0">'
' <AxisTag value="wght"/>'
' <AxisNameID value="258"/>'
' <AxisOrdering value="0"/>'
'</DesignAxis>'
'<!-- AxisValueCount=1 -->'
'<AxisValue index="0">'
' <Format value="3"/">'
' <AxisIndex value="0"/">'
' <Flags value="0x2"/">'
' <Value value="400.0"/">'
' <LinkedValue value="700.0"/">'
'</AxisValue>'
)
class STATTest(unittest.TestCase):
def test_decompile_toXML(self):
table = newTable('STAT')
table.decompile(STAT_DATA, font=FakeFont(['.notdef']))
self.maxDiff = None
self.assertEqual(getXML(table.toXML), STAT_XML)
def test_decompile_toXML_withJunk(self):
table = newTable('STAT')
table.decompile(STAT_DATA_WITH_JUNK, font=FakeFont(['.notdef']))
expected_xml = STAT_XML.replace('DesignAxisRecordSize=8',
'DesignAxisRecordSize=12')
self.assertEqual(getXML(table.toXML), expected_xml)
def test_decompile_toXML_format3(self):
table = newTable('STAT')
table.decompile(STAT_DATA_AXIS_VALUE_FORMAT3,
font=FakeFont(['.notdef']))
self.assertEqual(getXML(table.toXML), STAT_XML_AXIS_VALUE_FORMAT3)
if __name__ == '__main__':
unittest.main()

2
Lib/fontTools/ttLib/tables/otConverters.py
View File

@ -23,7 +23,7 @@ def buildConverters(tableSpec, tableNamespace):
if name.startswith("ValueFormat"):
assert tp == "uint16"
converterClass = ValueFormat
elif name.endswith("Count") or name.endswith("LookupType"):
elif name.endswith("Count") or name.endswith("LookupType") or name.endswith("RecordSize"):
assert tp in ("uint16", "uint32")
converterClass = ComputedUShort if tp == 'uint16' else ComputedULong
elif name == "SubTable":

17
Lib/fontTools/ttLib/tables/otData.py
View File

@ -840,6 +840,23 @@ otData = [
]),
#
# STAT
#
('STAT', [
('Version', 'Version', None, None, 'Version of the table-initially set to 0x00010000'),
('uint16', 'DesignAxisRecordSize', None, None, 'Size in bytes of each design axis record'),
('uint16', 'DesignAxisCount', None, None, 'Number of design axis records'),
('LOffsetToArray(AxisRecord)', 'DesignAxis', None, None, 'Offset in bytes from the beginning of the STAT table to the start of the design axes array'),
('uint16', 'AxisValueCount', None, None, 'Number of axis value tables'),
]),
('AxisRecord', [
('Tag', 'AxisTag', None, None, 'A tag identifying the axis of design variation'),
('uint16', 'AxisNameID', None, None, 'The name ID for entries in the "name" table that provide a display string for this axis'),
('uint16', 'AxisOrdering', None, None, 'A value that applications can use to determine primary sorting of face names, or for ordering of descriptors when composing family or face names'),
]),
#
# Variation fonts
#