[AAT] Implement subsetting of prop table with AAT glyph properties
This commit is contained in:
Sascha Brawer
parent
61d2cde14a
commit
28b179a018
@ -13,6 +13,7 @@ import sys
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import struct
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import array
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import logging
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from collections import Counter
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from types import MethodType
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__usage__ = "pyftsubset font-file [glyph...] [--option=value]..."
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@ -1704,6 +1705,26 @@ def subset_glyphs(self, s):
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self.extraNames = [] # This seems to do it
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return True # Required table
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@_add_method(ttLib.getTableClass('prop'))
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def subset_glyphs(self, s):
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prop = self.table.GlyphProperties
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if prop.Format == 0:
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return prop.DefaultProperties != 0
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elif prop.Format == 1:
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prop.Properties = {g: prop.Properties.get(g, prop.DefaultProperties)
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for g in s.glyphs}
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mostCommon, _cnt = Counter(prop.Properties.values()).most_common(1)[0]
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prop.DefaultProperties = mostCommon
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prop.Properties = {g: prop for g, prop in prop.Properties.items()
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if prop != mostCommon}
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if len(prop.Properties) == 0:
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del prop.Properties
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prop.Format = 0
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return prop.DefaultProperties != 0
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return True
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else:
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assert False, "unknown 'prop' format %s" % prop.Format
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@_add_method(ttLib.getTableClass('COLR'))
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def closure_glyphs(self, s):
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decompose = s.glyphs
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322
Tests/subset/data/TestPROP.ttx
Normal file
322
Tests/subset/data/TestPROP.ttx
Normal file
@ -0,0 +1,322 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ttFont sfntVersion="\x00\x01\x00\x00" ttLibVersion="3.0">
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<GlyphOrder>
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<GlyphID id="0" name=".notdef"/>
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<GlyphID id="1" name="space"/>
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<GlyphID id="2" name="zero"/>
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<GlyphID id="3" name="one"/>
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<GlyphID id="4" name="two"/>
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<GlyphID id="5" name="A"/>
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</GlyphOrder>
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<head>
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<!-- Most of this table will be recalculated by the compiler -->
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<tableVersion value="1.0"/>
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<fontRevision value="1.0"/>
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<checkSumAdjustment value="0xf1c8c54f"/>
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<magicNumber value="0x5f0f3cf5"/>
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<flags value="00000000 00000011"/>
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<unitsPerEm value="1000"/>
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<created value="Thu Mar 31 07:56:22 2016"/>
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<modified value="Thu Mar 31 11:16:24 2016"/>
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<xMin value="40"/>
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<yMin value="-10"/>
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<xMax value="620"/>
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<yMax value="710"/>
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<macStyle value="00000000 00000000"/>
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<lowestRecPPEM value="7"/>
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<fontDirectionHint value="2"/>
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<indexToLocFormat value="0"/>
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<glyphDataFormat value="0"/>
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</head>
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<hhea>
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<tableVersion value="0x00010000"/>
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<ascent value="1000"/>
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<descent value="-200"/>
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<lineGap value="0"/>
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<advanceWidthMax value="700"/>
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<minLeftSideBearing value="40"/>
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<minRightSideBearing value="40"/>
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<xMaxExtent value="620"/>
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<caretSlopeRise value="1"/>
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<caretSlopeRun value="0"/>
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<caretOffset value="0"/>
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<reserved0 value="0"/>
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<reserved1 value="0"/>
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<reserved2 value="0"/>
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<reserved3 value="0"/>
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<metricDataFormat value="0"/>
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<numberOfHMetrics value="4"/>
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</hhea>
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<maxp>
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<!-- Most of this table will be recalculated by the compiler -->
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<tableVersion value="0x10000"/>
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<numGlyphs value="6"/>
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<maxPoints value="32"/>
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<maxContours value="2"/>
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<maxCompositePoints value="0"/>
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<maxCompositeContours value="0"/>
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<maxZones value="1"/>
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<maxTwilightPoints value="0"/>
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<maxStorage value="0"/>
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<maxFunctionDefs value="1"/>
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<maxInstructionDefs value="0"/>
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<maxStackElements value="0"/>
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<maxSizeOfInstructions value="0"/>
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<maxComponentElements value="0"/>
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<maxComponentDepth value="0"/>
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</maxp>
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<OS_2>
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<!-- The fields 'usFirstCharIndex' and 'usLastCharIndex'
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will be recalculated by the compiler -->
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<version value="3"/>
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<xAvgCharWidth value="606"/>
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<usWeightClass value="400"/>
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<usWidthClass value="5"/>
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<fsType value="00000000 00001000"/>
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<ySubscriptXSize value="650"/>
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<ySubscriptYSize value="600"/>
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<ySubscriptXOffset value="0"/>
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<ySubscriptYOffset value="75"/>
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<ySuperscriptXSize value="650"/>
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<ySuperscriptYSize value="600"/>
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<ySuperscriptXOffset value="0"/>
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<ySuperscriptYOffset value="350"/>
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<yStrikeoutSize value="50"/>
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<yStrikeoutPosition value="300"/>
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<sFamilyClass value="0"/>
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<panose>
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<bFamilyType value="0"/>
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<bSerifStyle value="0"/>
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<bWeight value="5"/>
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<bProportion value="0"/>
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<bContrast value="0"/>
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<bStrokeVariation value="0"/>
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<bArmStyle value="0"/>
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<bLetterForm value="0"/>
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<bMidline value="0"/>
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<bXHeight value="0"/>
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</panose>
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<ulUnicodeRange1 value="00000000 00000000 00000000 00000001"/>
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<ulUnicodeRange2 value="00000000 00000000 00000000 00000000"/>
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<ulUnicodeRange3 value="00000000 00000000 00000000 00000000"/>
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<ulUnicodeRange4 value="00000000 00000000 00000000 00000000"/>
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<achVendID value="UKWN"/>
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<fsSelection value="00000000 01000000"/>
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<usFirstCharIndex value="32"/>
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<usLastCharIndex value="8722"/>
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<sTypoAscender value="800"/>
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<sTypoDescender value="-200"/>
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<sTypoLineGap value="200"/>
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<usWinAscent value="1000"/>
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<usWinDescent value="200"/>
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<ulCodePageRange1 value="00000000 00000000 00000000 00000001"/>
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<ulCodePageRange2 value="00000000 00000000 00000000 00000000"/>
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<sxHeight value="500"/>
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<sCapHeight value="700"/>
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<usDefaultChar value="0"/>
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<usBreakChar value="32"/>
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<usMaxContext value="0"/>
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</OS_2>
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<hmtx>
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<mtx name=".notdef" width="700" lsb="80"/>
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<mtx name="space" width="700" lsb="0"/>
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<mtx name="zero" width="625" lsb="40"/>
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<mtx name="one" width="660" lsb="80"/>
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<mtx name="two" width="660" lsb="80"/>
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<mtx name="A" width="660" lsb="80"/>
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</hmtx>
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<cmap>
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<tableVersion version="0"/>
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<cmap_format_4 platformID="0" platEncID="3" language="0">
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<map code="0x20" name="space"/>
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<map code="0x30" name="zero"/>
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<map code="0x31" name="one"/>
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<map code="0x32" name="two"/>
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<map code="0x41" name="A"/>
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</cmap_format_4>
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</cmap>
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<loca>
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<!-- The 'loca' table will be calculated by the compiler -->
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</loca>
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<glyf>
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<!-- The xMin, yMin, xMax and yMax values
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will be recalculated by the compiler. -->
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<TTGlyph name=".notdef" xMin="80" yMin="0" xMax="620" yMax="700">
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<contour>
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<pt x="620" y="700" on="1"/>
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<pt x="620" y="0" on="1"/>
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<pt x="80" y="0" on="1"/>
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<pt x="80" y="700" on="1"/>
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</contour>
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<contour>
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<pt x="160" y="80" on="1"/>
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<pt x="540" y="80" on="1"/>
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<pt x="540" y="620" on="1"/>
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<pt x="160" y="620" on="1"/>
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</contour>
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<instructions><assembly>
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</assembly></instructions>
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</TTGlyph>
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<TTGlyph name="one" xMin="80" yMin="230" xMax="580" yMax="490">
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<contour>
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<pt x="580" y="490" on="1"/>
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<pt x="580" y="410" on="1"/>
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<pt x="80" y="410" on="1"/>
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<pt x="80" y="490" on="1"/>
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</contour>
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<contour>
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<pt x="580" y="310" on="1"/>
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<pt x="580" y="230" on="1"/>
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<pt x="80" y="230" on="1"/>
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<pt x="80" y="310" on="1"/>
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</contour>
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<instructions><assembly>
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</assembly></instructions>
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</TTGlyph>
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<TTGlyph name="two" xMin="80" yMin="310" xMax="580" yMax="390">
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<contour>
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<pt x="580" y="390" on="1"/>
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<pt x="580" y="310" on="1"/>
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<pt x="80" y="310" on="1"/>
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<pt x="80" y="390" on="1"/>
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</contour>
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<instructions><assembly>
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</assembly></instructions>
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</TTGlyph>
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<TTGlyph name="A" xMin="80" yMin="100" xMax="580" yMax="600">
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<contour>
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<pt x="580" y="310" on="1"/>
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<pt x="370" y="310" on="1"/>
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<pt x="370" y="100" on="1"/>
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<pt x="290" y="100" on="1"/>
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<pt x="290" y="310" on="1"/>
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<pt x="80" y="310" on="1"/>
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<pt x="80" y="390" on="1"/>
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<pt x="290" y="390" on="1"/>
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<pt x="290" y="600" on="1"/>
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<pt x="370" y="600" on="1"/>
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<pt x="370" y="390" on="1"/>
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<pt x="580" y="390" on="1"/>
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</contour>
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<instructions><assembly>
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</assembly></instructions>
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</TTGlyph>
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<TTGlyph name="space"/><!-- contains no outline data -->
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<TTGlyph name="zero" xMin="40" yMin="-10" xMax="585" yMax="710">
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<contour>
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<pt x="237" y="-10" on="0"/>
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<pt x="113" y="78" on="0"/>
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<pt x="40" y="241" on="0"/>
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<pt x="40" y="350" on="1"/>
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<pt x="40" y="459" on="0"/>
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<pt x="113" y="622" on="0"/>
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<pt x="237" y="710" on="0"/>
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<pt x="313" y="710" on="1"/>
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<pt x="388" y="710" on="0"/>
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<pt x="513" y="622" on="0"/>
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<pt x="585" y="459" on="0"/>
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<pt x="585" y="350" on="1"/>
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<pt x="585" y="241" on="0"/>
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<pt x="513" y="78" on="0"/>
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<pt x="388" y="-10" on="0"/>
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<pt x="313" y="-10" on="1"/>
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</contour>
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<contour>
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<pt x="366" y="74" on="0"/>
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<pt x="454" y="144" on="0"/>
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<pt x="505" y="270" on="0"/>
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<pt x="505" y="350" on="1"/>
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<pt x="505" y="430" on="0"/>
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<pt x="454" y="556" on="0"/>
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<pt x="366" y="626" on="0"/>
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<pt x="313" y="626" on="1"/>
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<pt x="260" y="626" on="0"/>
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<pt x="171" y="556" on="0"/>
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<pt x="120" y="430" on="0"/>
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<pt x="120" y="350" on="1"/>
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<pt x="120" y="270" on="0"/>
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<pt x="171" y="144" on="0"/>
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<pt x="260" y="74" on="0"/>
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<pt x="313" y="74" on="1"/>
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</contour>
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<instructions><assembly>
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</assembly></instructions>
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</TTGlyph>
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</glyf>
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<name>
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<namerecord nameID="1" platformID="1" platEncID="0" langID="0x0" unicode="True">
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TestPROP
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</namerecord>
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<namerecord nameID="2" platformID="1" platEncID="0" langID="0x0" unicode="True">
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Regular
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</namerecord>
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<namerecord nameID="4" platformID="1" platEncID="0" langID="0x0" unicode="True">
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TestPROP
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</namerecord>
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<namerecord nameID="6" platformID="1" platEncID="0" langID="0x0" unicode="True">
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TestPROP-Regular
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</namerecord>
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</name>
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<post>
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<formatType value="2.0"/>
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<italicAngle value="0.0"/>
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<underlinePosition value="-75"/>
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<underlineThickness value="50"/>
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<isFixedPitch value="0"/>
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<minMemType42 value="0"/>
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<maxMemType42 value="0"/>
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<minMemType1 value="0"/>
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<maxMemType1 value="0"/>
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<psNames>
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<!-- This file uses unique glyph names based on the information
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found in the 'post' table. Since these names might not be unique,
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we have to invent artificial names in case of clashes. In order to
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be able to retain the original information, we need a name to
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ps name mapping for those cases where they differ. That's what
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you see below.
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-->
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</psNames>
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<extraNames>
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<!-- following are the name that are not taken from the standard Mac glyph order -->
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</extraNames>
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</post>
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<prop>
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<Version value="3.0"/>
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<GlyphProperties Format="1">
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<DefaultProperties value="0"/>
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<Properties>
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<Lookup glyph="space" value="10"/>
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<Lookup glyph="zero" value="3"/>
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<Lookup glyph="one" value="3"/>
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<Lookup glyph="two" value="3"/>
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</Properties>
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</GlyphProperties>
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</prop>
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<gasp>
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<gaspRange rangeMaxPPEM="7" rangeGaspBehavior="10"/>
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<gaspRange rangeMaxPPEM="19" rangeGaspBehavior="7"/>
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<gaspRange rangeMaxPPEM="65535" rangeGaspBehavior="15"/>
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</gasp>
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</ttFont>
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11
Tests/subset/data/expect_prop_0.ttx
Normal file
11
Tests/subset/data/expect_prop_0.ttx
Normal file
@ -0,0 +1,11 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ttFont>
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<prop>
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<Version value="3.0"/>
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<GlyphProperties Format="0">
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<DefaultProperties value="3"/>
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</GlyphProperties>
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</prop>
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</ttFont>
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14
Tests/subset/data/expect_prop_1.ttx
Normal file
14
Tests/subset/data/expect_prop_1.ttx
Normal file
@ -0,0 +1,14 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<ttFont>
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<prop>
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<Version value="3.0"/>
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<GlyphProperties Format="1">
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<DefaultProperties value="3"/>
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<Properties>
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<Lookup glyph=".notdef" value="0"/>
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</Properties>
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</GlyphProperties>
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</prop>
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</ttFont>
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@ -123,6 +123,41 @@ class SubsetTest(unittest.TestCase):
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subsetfont = TTFont(subsetpath)
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self.expect_ttx(subsetfont, self.getpath("expect_keep_math.ttx"), ["GlyphOrder", "CFF ", "MATH", "hmtx"])
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def test_subset_prop_remove_default_zero(self):
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# If all glyphs have an AAT glyph property with value 0,
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# the "prop" table should be removed from the subsetted font.
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_, fontpath = self.compile_font(self.getpath("TestPROP.ttx"), ".ttf")
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subsetpath = self.temp_path(".ttf")
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subset.main([fontpath, "--unicodes=U+0041",
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"--output-file=%s" % subsetpath])
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subsetfont = TTFont(subsetpath)
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self.assertNotIn("prop", subsetfont)
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def test_subset_prop_0(self):
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# If all glyphs share the same AAT glyph properties, the "prop" table
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# in the subsetted font should use format 0.
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#
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# Unless the shared value is zero, in which case the subsetted font
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# should have no "prop" table at all. But that case has already been
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# tested above in test_subset_prop_remove_default_zero().
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_, fontpath = self.compile_font(self.getpath("TestPROP.ttx"), ".ttf")
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subsetpath = self.temp_path(".ttf")
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subset.main([fontpath, "--unicodes=U+0030-0032", "--no-notdef-glyph",
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"--output-file=%s" % subsetpath])
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subsetfont = TTFont(subsetpath)
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self.expect_ttx(subsetfont, self.getpath("expect_prop_0.ttx"), ["prop"])
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def test_subset_prop_1(self):
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# If not all glyphs share the same AAT glyph properties, the subsetted
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# font should contain a "prop" table in format 1. To save space, the
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# DefaultProperties should be set to the most frequent value.
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_, fontpath = self.compile_font(self.getpath("TestPROP.ttx"), ".ttf")
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subsetpath = self.temp_path(".ttf")
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subset.main([fontpath, "--unicodes=U+0030-0032", "--notdef-outline",
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"--output-file=%s" % subsetpath])
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subsetfont = TTFont(subsetpath)
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self.expect_ttx(subsetfont, self.getpath("expect_prop_1.ttx"), ["prop"])
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def test_options(self):
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# https://github.com/behdad/fonttools/issues/413
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opt1 = subset.Options()
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