| from fontTools.misc.testTools import FakeFont, getXML, parseXML |
| from fontTools.misc.textTools import deHexStr, hexStr |
| from fontTools.ttLib import newTable |
| import unittest |
| |
| |
| # Glyph Metamorphosis Table Examples |
| # Example 1: Non-contextual Glyph Substitution |
| # https://developer.apple.com/fonts/TrueType-Reference-Manual/RM06/Chap6mort.html |
| # The example given by Apple's 'mort' specification is suboptimally |
| # encoded: it uses AAT lookup format 6 even though format 8 would be |
| # more compact. Because our encoder always uses the most compact |
| # encoding, this breaks our round-trip testing. Therefore, we changed |
| # the example to use GlyphID 13 instead of 12 for the 'parenright' |
| # character; the non-contiguous glyph range for the AAT lookup makes |
| # format 6 to be most compact. |
| MORT_NONCONTEXTUAL_DATA = deHexStr( |
| "0001 0000 " # 0: Version=1.0 |
| "0000 0001 " # 4: MorphChainCount=1 |
| "0000 0001 " # 8: DefaultFlags=1 |
| "0000 0050 " # 12: StructLength=80 |
| "0003 0001 " # 16: MorphFeatureCount=3, MorphSubtableCount=1 |
| "0004 0000 " # 20: Feature[0].FeatureType=4/VertSubst, .FeatureSetting=on |
| "0000 0001 " # 24: Feature[0].EnableFlags=0x00000001 |
| "FFFF FFFF " # 28: Feature[0].DisableFlags=0xFFFFFFFF |
| "0004 0001 " # 32: Feature[1].FeatureType=4/VertSubst, .FeatureSetting=off |
| "0000 0000 " # 36: Feature[1].EnableFlags=0x00000000 |
| "FFFF FFFE " # 40: Feature[1].DisableFlags=0xFFFFFFFE |
| "0000 0001 " # 44: Feature[2].FeatureType=0/GlyphEffects, .FeatSetting=off |
| "0000 0000 " # 48: Feature[2].EnableFlags=0 (required for last feature) |
| "0000 0000 " # 52: Feature[2].EnableFlags=0 (required for last feature) |
| "0020 " # 56: Subtable[0].StructLength=32 |
| "80 " # 58: Subtable[0].CoverageFlags=0x80 |
| "04 " # 59: Subtable[0].MorphType=4/NoncontextualMorph |
| "0000 0001 " # 60: Subtable[0].SubFeatureFlags=0x1 |
| "0006 0004 " # 64: LookupFormat=6, UnitSize=4 |
| "0002 0008 " # 68: NUnits=2, SearchRange=8 |
| "0001 0000 " # 72: EntrySelector=1, RangeShift=0 |
| "000B 0087 " # 76: Glyph=11 (parenleft); Value=135 (parenleft.vertical) |
| "000D 0088 " # 80: Glyph=13 (parenright); Value=136 (parenright.vertical) |
| "FFFF 0000 " # 84: Glyph=<end>; Value=0 |
| ) # 88: <end> |
| assert len(MORT_NONCONTEXTUAL_DATA) == 88 |
| |
| |
| MORT_NONCONTEXTUAL_XML = [ |
| '<Version value="0x00010000"/>', |
| "<!-- MorphChainCount=1 -->", |
| '<MorphChain index="0">', |
| ' <DefaultFlags value="0x00000001"/>', |
| " <!-- StructLength=80 -->", |
| " <!-- MorphFeatureCount=3 -->", |
| " <!-- MorphSubtableCount=1 -->", |
| ' <MorphFeature index="0">', |
| ' <FeatureType value="4"/>', |
| ' <FeatureSetting value="0"/>', |
| ' <EnableFlags value="0x00000001"/>', |
| ' <DisableFlags value="0xFFFFFFFF"/>', |
| " </MorphFeature>", |
| ' <MorphFeature index="1">', |
| ' <FeatureType value="4"/>', |
| ' <FeatureSetting value="1"/>', |
| ' <EnableFlags value="0x00000000"/>', |
| ' <DisableFlags value="0xFFFFFFFE"/>', |
| " </MorphFeature>", |
| ' <MorphFeature index="2">', |
| ' <FeatureType value="0"/>', |
| ' <FeatureSetting value="1"/>', |
| ' <EnableFlags value="0x00000000"/>', |
| ' <DisableFlags value="0x00000000"/>', |
| " </MorphFeature>", |
| ' <MorphSubtable index="0">', |
| " <!-- StructLength=32 -->", |
| ' <CoverageFlags value="128"/>', |
| " <!-- MorphType=4 -->", |
| ' <SubFeatureFlags value="0x00000001"/>', |
| " <NoncontextualMorph>", |
| " <Substitution>", |
| ' <Lookup glyph="parenleft" value="parenleft.vertical"/>', |
| ' <Lookup glyph="parenright" value="parenright.vertical"/>', |
| " </Substitution>", |
| " </NoncontextualMorph>", |
| " </MorphSubtable>", |
| "</MorphChain>", |
| ] |
| |
| |
| class MORTNoncontextualGlyphSubstitutionTest(unittest.TestCase): |
| @classmethod |
| def setUpClass(cls): |
| cls.maxDiff = None |
| glyphs = [".notdef"] + ["g.%d" % i for i in range(1, 140)] |
| glyphs[11], glyphs[13] = "parenleft", "parenright" |
| glyphs[135], glyphs[136] = "parenleft.vertical", "parenright.vertical" |
| cls.font = FakeFont(glyphs) |
| |
| def test_decompile_toXML(self): |
| table = newTable("mort") |
| table.decompile(MORT_NONCONTEXTUAL_DATA, self.font) |
| self.assertEqual(getXML(table.toXML), MORT_NONCONTEXTUAL_XML) |
| |
| def test_compile_fromXML(self): |
| table = newTable("mort") |
| for name, attrs, content in parseXML(MORT_NONCONTEXTUAL_XML): |
| table.fromXML(name, attrs, content, font=self.font) |
| self.assertEqual( |
| hexStr(table.compile(self.font)), hexStr(MORT_NONCONTEXTUAL_DATA) |
| ) |
| |
| |
| if __name__ == "__main__": |
| import sys |
| |
| sys.exit(unittest.main()) |