shadowfacts/fonttools
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

add test for parsing and compiling DeviceTable's DeltaValue

Browse Source
This commit is contained in:
Cosimo Lupo 2025-02-04 10:20:41 +00:00
parent 24eb3f7197
commit 5b3176f4fd
2 changed files with 91 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
Lib/fontTools/misc/testTools.py
View File

@ -58,6 +58,9 @@ class FakeFont:
self.tables = {} self.tables = {}
self.cfg = Config() self.cfg = Config()
def __contains__(self, tag):
return tag in self.tables
def __getitem__(self, tag): def __getitem__(self, tag):
return self.tables[tag] return self.tables[tag]

88
Tests/ttLib/tables/otTables_test.py
View File

@ -4,6 +4,7 @@ from fontTools.misc.xmlWriter import XMLWriter
from fontTools.ttLib.tables.otBase import OTTableReader, OTTableWriter from fontTools.ttLib.tables.otBase import OTTableReader, OTTableWriter
import fontTools.ttLib.tables.otTables as otTables import fontTools.ttLib.tables.otTables as otTables
from io import StringIO from io import StringIO
from textwrap import dedent
import unittest import unittest
@ -735,6 +736,93 @@ class ColrV1Test(unittest.TestCase):
assert len(visited) == 1 assert len(visited) == 1
def test_parse_Device_DeltaValue_from_XML_and_compile():
# https://github.com/fonttools/fonttools/pull/3757
font = FakeFont([".notdef", "five"])
gpos_xml = dedent(
"""\
<Version value="0x00010000"/>
<ScriptList>
<!-- ScriptCount=1 -->
<ScriptRecord index="0">
<ScriptTag value="DFLT"/>
<Script>
<DefaultLangSys>
<ReqFeatureIndex value="65535"/>
<!-- FeatureCount=1 -->
<FeatureIndex index="0" value="0"/>
</DefaultLangSys>
<!-- LangSysCount=0 -->
</Script>
</ScriptRecord>
</ScriptList>
<FeatureList>
<!-- FeatureCount=1 -->
<FeatureRecord index="0">
<FeatureTag value="curs"/>
<Feature>
<!-- LookupCount=1 -->
<LookupListIndex index="0" value="0"/>
</Feature>
</FeatureRecord>
</FeatureList>
<LookupList>
<!-- LookupCount=1 -->
<Lookup index="0">
<LookupType value="3"/>
<LookupFlag value="0"/>
<!-- SubTableCount=1 -->
<CursivePos index="0" Format="1">
<Coverage>
<Glyph value="five"/>
</Coverage>
<!-- EntryExitCount=1 -->
<EntryExitRecord index="0">
<EntryAnchor Format="3">
<XCoordinate value="124"/>
<YCoordinate value="-4"/>
<XDeviceTable>
<StartSize value="8"/>
<EndSize value="9"/>
<DeltaFormat value="2"/>
<DeltaValue value="[1, 2]"/>
</XDeviceTable>
<YDeviceTable>
<StartSize value="7"/>
<EndSize value="7"/>
<DeltaFormat value="2"/>
<DeltaValue value="[3]"/>
</YDeviceTable>
</EntryAnchor>
<ExitAnchor Format="2">
<XCoordinate value="3"/>
<YCoordinate value="4"/>
<AnchorPoint value="2"/>
</ExitAnchor>
</EntryExitRecord>
</CursivePos>
</Lookup>
</LookupList>"""
)
gpos = parseXmlInto(font, otTables.GPOS(), gpos_xml)
anchor = gpos.LookupList.Lookup[0].SubTable[0].EntryExitRecord[0].EntryAnchor
assert anchor.XDeviceTable.DeltaValue == [1, 2]
assert anchor.YDeviceTable.DeltaValue == [3]
writer = OTTableWriter()
gpos.compile(writer, font)
data = writer.getAllData()
reader = OTTableReader(data, tableTag="GPOS")
gpos2 = otTables.GPOS()
gpos2.decompile(reader, font)
assert dedent("\n".join(getXML(gpos2.toXML, font)[1:-1])) == gpos_xml
if __name__ == "__main__": if __name__ == "__main__":
import sys import sys