1from fontTools.misc.testTools import getXML, parseXML 2from fontTools.misc.textTools import deHexStr, hexStr 3from fontTools.ttLib import TTLibError, getTableModule, newTable 4from fontTools.ttLib.tables.TupleVariation import TupleVariation 5 6import unittest 7 8 9CVAR_DATA = deHexStr( 10 "0001 0000 " # 0: majorVersion=1 minorVersion=0 11 "8002 0018 " # 4: tupleVariationCount=2|TUPLES_SHARE_POINT_NUMBERS offsetToData=24 12 "0004 " # 8: tvHeader[0].variationDataSize=4 13 "8000 " # 10: tvHeader[0].tupleIndex=EMBEDDED_PEAK 14 "4000 0000 " # 12: tvHeader[0].peakTuple=[1.0, 0.0] 15 "0004 " # 16: tvHeader[1].variationDataSize=4 16 "8000 " # 18: tvHeader[1].tupleIndex=EMBEDDED_PEAK 17 "C000 3333 " # 20: tvHeader[1].peakTuple=[-1.0, 0.8] 18 "03 02 02 01 01" # 24: shared_pointCount=03, run_count=2 cvt=[2, 3, 4] 19 "02 03 01 04 " # 25: deltas=[3, 1, 4] 20 "02 09 07 08") # 29: deltas=[9, 7, 8] 21 22CVAR_PRIVATE_POINT_DATA = deHexStr( 23 "0001 0000 " # 0: majorVersion=1 minorVersion=0 24 "0002 0018 " # 4: tupleVariationCount=2 offsetToData=24 25 "0009 " # 8: tvHeader[0].variationDataSize=9 26 "A000 " # 10: tvHeader[0].tupleIndex=EMBEDDED_PEAK|PRIVATE_POINT_NUMBERS 27 "4000 0000 " # 12: tvHeader[0].peakTuple=[1.0, 0.0] 28 "0009 " # 16: tvHeader[1].variationDataSize=9 29 "A000 " # 18: tvHeader[1].tupleIndex=EMBEDDED_PEAK|PRIVATE_POINT_NUMBERS 30 "C000 3333 " # 20: tvHeader[1].peakTuple=[-1.0, 0.8] 31 "03 02 02 01 01 02 03 01 04 " # 24: pointCount=3 run_count=2 cvt=2 1 1 run_count=2 deltas=[3, 1, 4] 32 "03 02 02 01 01 02 09 07 08 ") # 33: pointCount=3 run_count=2 cvt=2 1 1 run_count=2 deltas=[9, 7, 8] 33 34CVAR_XML = [ 35 '<version major="1" minor="0"/>', 36 '<tuple>', 37 ' <coord axis="wght" value="1.0"/>', 38 ' <delta cvt="2" value="3"/>', 39 ' <delta cvt="3" value="1"/>', 40 ' <delta cvt="4" value="4"/>', 41 '</tuple>', 42 '<tuple>', 43 ' <coord axis="wght" value="-1.0"/>', 44 ' <coord axis="wdth" value="0.8"/>', 45 ' <delta cvt="2" value="9"/>', 46 ' <delta cvt="3" value="7"/>', 47 ' <delta cvt="4" value="8"/>', 48 '</tuple>', 49] 50 51CVAR_VARIATIONS = [ 52 TupleVariation({"wght": (0.0, 1.0, 1.0)}, [None, None, 3, 1, 4]), 53 TupleVariation({"wght": (-1, -1.0, 0.0), "wdth": (0.0, 0.7999878, 0.7999878)}, 54 [None, None, 9, 7, 8]), 55] 56 57 58class CVARTableTest(unittest.TestCase): 59 def assertVariationsAlmostEqual(self, variations1, variations2): 60 self.assertEqual(len(variations1), len(variations2)) 61 for (v1, v2) in zip(variations1, variations2): 62 self.assertSetEqual(set(v1.axes), set(v2.axes)) 63 for axisTag, support1 in v1.axes.items(): 64 support2 = v2.axes[axisTag] 65 self.assertEqual(len(support1), len(support2)) 66 for s1, s2 in zip(support1, support2): 67 self.assertAlmostEqual(s1, s2) 68 self.assertEqual(v1.coordinates, v2.coordinates) 69 70 def makeFont(self): 71 cvt, cvar, fvar = newTable("cvt "), newTable("cvar"), newTable("fvar") 72 font = {"cvt ": cvt, "cvar": cvar, "fvar": fvar} 73 cvt.values = [0, 0, 0, 1000, -2000] 74 Axis = getTableModule("fvar").Axis 75 fvar.axes = [Axis(), Axis()] 76 fvar.axes[0].axisTag, fvar.axes[1].axisTag = "wght", "wdth" 77 return font, cvar 78 79 def test_compile(self): 80 font, cvar = self.makeFont() 81 cvar.variations = CVAR_VARIATIONS 82 self.assertEqual(hexStr(cvar.compile(font)), hexStr(CVAR_PRIVATE_POINT_DATA)) 83 84 def test_compile_shared_points(self): 85 font, cvar = self.makeFont() 86 cvar.variations = CVAR_VARIATIONS 87 self.assertEqual(hexStr(cvar.compile(font, useSharedPoints=True)), hexStr(CVAR_DATA)) 88 89 def test_decompile(self): 90 font, cvar = self.makeFont() 91 cvar.decompile(CVAR_PRIVATE_POINT_DATA, font) 92 self.assertEqual(cvar.majorVersion, 1) 93 self.assertEqual(cvar.minorVersion, 0) 94 self.assertVariationsAlmostEqual(cvar.variations, CVAR_VARIATIONS) 95 96 def test_decompile_shared_points(self): 97 font, cvar = self.makeFont() 98 cvar.decompile(CVAR_DATA, font) 99 self.assertEqual(cvar.majorVersion, 1) 100 self.assertEqual(cvar.minorVersion, 0) 101 self.assertVariationsAlmostEqual(cvar.variations, CVAR_VARIATIONS) 102 103 def test_fromXML(self): 104 font, cvar = self.makeFont() 105 for name, attrs, content in parseXML(CVAR_XML): 106 cvar.fromXML(name, attrs, content, ttFont=font) 107 self.assertEqual(cvar.majorVersion, 1) 108 self.assertEqual(cvar.minorVersion, 0) 109 self.assertVariationsAlmostEqual(cvar.variations, CVAR_VARIATIONS) 110 111 def test_toXML(self): 112 font, cvar = self.makeFont() 113 cvar.variations = CVAR_VARIATIONS 114 self.assertEqual(getXML(cvar.toXML, font), CVAR_XML) 115 116 117if __name__ == "__main__": 118 import sys 119 sys.exit(unittest.main()) 120