143 lines
5.2 KiB
Python
143 lines
5.2 KiB
Python
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# coding: utf-8
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from __future__ import print_function, division, absolute_import, unicode_literals
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from fontTools.misc.py23 import *
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from fontTools.misc.testTools import FakeFont, getXML, parseXML
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from fontTools.misc.textTools import deHexStr, hexStr
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from fontTools.ttLib import newTable
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import unittest
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# This is the anchor points table of the first font file in
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# “/Library/Fonts/Devanagari Sangam MN.ttc” on macOS 10.12.6.
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# For testing, we’ve changed the GlyphIDs to smaller values.
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# Also, in the AATLookup, we’ve changed GlyphDataOffset value
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# for the end-of-table marker from 0xFFFF to 0 since that is
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# what our encoder emits. (The value for end-of-table markers
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# does not actually matter).
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ANKR_FORMAT_0_DATA = deHexStr(
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'0000 0000 ' # 0: Format=0, Flags=0
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'0000 000C ' # 4: LookupTableOffset=12
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'0000 0024 ' # 8: GlyphDataTableOffset=36
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'0006 0004 0002 ' # 12: LookupFormat=6, UnitSize=4, NUnits=2
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'0008 0001 0000 ' # 18: SearchRange=8, EntrySelector=1, RangeShift=0
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'0001 0000 ' # 24: Glyph=A, GlyphDataOffset=0 (+GlyphDataOffset=36)
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'0003 0008 ' # 28: Glyph=C, GlyphDataOffset=8 (+GlyphDataOffset=44)
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'FFFF 0000 ' # 32: Glyph=<end>, GlyphDataOffset=<n/a>
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'0000 0001 ' # 36: GlyphData[A].NumPoints=1
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'0235 045E ' # 40: GlyphData[A].Points[0].X=565, .Y=1118
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'0000 0001 ' # 44: GlyphData[C].NumPoints=1
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'FED2 045E ' # 48: GlyphData[C].Points[0].X=-302, .Y=1118
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) # 52: <end>
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assert len(ANKR_FORMAT_0_DATA) == 52
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ANKR_FORMAT_0_XML = [
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'<AnchorPoints Format="0">',
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' <Flags value="0"/>',
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' <Anchors>',
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' <Lookup glyph="A">',
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' <!-- AnchorPointCount=1 -->',
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' <AnchorPoint index="0">',
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' <XCoordinate value="565"/>',
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' <YCoordinate value="1118"/>',
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' </AnchorPoint>',
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' </Lookup>',
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' <Lookup glyph="C">',
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' <!-- AnchorPointCount=1 -->',
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' <AnchorPoint index="0">',
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' <XCoordinate value="-302"/>',
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' <YCoordinate value="1118"/>',
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' </AnchorPoint>',
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' </Lookup>',
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' </Anchors>',
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'</AnchorPoints>',
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]
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# Constructed test case where glyphs A and D share the same anchor data.
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ANKR_FORMAT_0_SHARING_DATA = deHexStr(
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'0000 0000 ' # 0: Format=0, Flags=0
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'0000 000C ' # 4: LookupTableOffset=12
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'0000 0028 ' # 8: GlyphDataTableOffset=40
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'0006 0004 0003 ' # 12: LookupFormat=6, UnitSize=4, NUnits=3
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'0008 0001 0004 ' # 18: SearchRange=8, EntrySelector=1, RangeShift=4
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'0001 0000 ' # 24: Glyph=A, GlyphDataOffset=0 (+GlyphDataOffset=36)
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'0003 0008 ' # 28: Glyph=C, GlyphDataOffset=8 (+GlyphDataOffset=44)
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'0004 0000 ' # 32: Glyph=D, GlyphDataOffset=0 (+GlyphDataOffset=36)
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'FFFF 0000 ' # 36: Glyph=<end>, GlyphDataOffset=<n/a>
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'0000 0001 ' # 40: GlyphData[A].NumPoints=1
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'0235 045E ' # 44: GlyphData[A].Points[0].X=565, .Y=1118
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'0000 0002 ' # 48: GlyphData[C].NumPoints=2
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'000B 000C ' # 52: GlyphData[C].Points[0].X=11, .Y=12
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'001B 001C ' # 56: GlyphData[C].Points[1].X=27, .Y=28
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) # 60: <end>
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assert len(ANKR_FORMAT_0_SHARING_DATA) == 60
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ANKR_FORMAT_0_SHARING_XML = [
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'<AnchorPoints Format="0">',
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' <Flags value="0"/>',
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' <Anchors>',
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' <Lookup glyph="A">',
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' <!-- AnchorPointCount=1 -->',
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' <AnchorPoint index="0">',
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' <XCoordinate value="565"/>',
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' <YCoordinate value="1118"/>',
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' </AnchorPoint>',
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' </Lookup>',
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' <Lookup glyph="C">',
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' <!-- AnchorPointCount=2 -->',
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' <AnchorPoint index="0">',
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' <XCoordinate value="11"/>',
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' <YCoordinate value="12"/>',
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' </AnchorPoint>',
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' <AnchorPoint index="1">',
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' <XCoordinate value="27"/>',
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' <YCoordinate value="28"/>',
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' </AnchorPoint>',
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' </Lookup>',
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' <Lookup glyph="D">',
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' <!-- AnchorPointCount=1 -->',
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' <AnchorPoint index="0">',
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' <XCoordinate value="565"/>',
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' <YCoordinate value="1118"/>',
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' </AnchorPoint>',
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' </Lookup>',
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' </Anchors>',
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'</AnchorPoints>',
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]
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class ANKRTest(unittest.TestCase):
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@classmethod
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def setUpClass(cls):
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cls.maxDiff = None
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cls.font = FakeFont(['.notdef', 'A', 'B', 'C', 'D'])
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def decompileToXML(self, data, xml):
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table = newTable('ankr')
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table.decompile(data, self.font)
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self.assertEqual(getXML(table.toXML), xml)
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def compileFromXML(self, xml, data):
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table = newTable('ankr')
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for name, attrs, content in parseXML(xml):
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table.fromXML(name, attrs, content, font=self.font)
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self.assertEqual(hexStr(table.compile(self.font)), hexStr(data))
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def roundtrip(self, data, xml):
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self.decompileToXML(data, xml)
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self.compileFromXML(xml, data)
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def testFormat0(self):
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self.roundtrip(ANKR_FORMAT_0_DATA, ANKR_FORMAT_0_XML)
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def testFormat0_sharing(self):
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self.roundtrip(ANKR_FORMAT_0_SHARING_DATA, ANKR_FORMAT_0_SHARING_XML)
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if __name__ == '__main__':
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import sys
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sys.exit(unittest.main())
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