Coverage for /usr/lib/python3/dist-packages/fontTools/ttLib/tables/BitmapGlyphMetrics.py: 46%

1# Since bitmap glyph metrics are shared between EBLC and EBDT 

2# this class gets its own python file. 

3from fontTools.misc import sstruct 

4from fontTools.misc.textTools import safeEval 

5import logging 

6 

7 

8log = logging.getLogger(__name__) 

9 

10bigGlyphMetricsFormat = """ 

11 > # big endian 

12 height: B 

13 width: B 

14 horiBearingX: b 

15 horiBearingY: b 

16 horiAdvance: B 

17 vertBearingX: b 

18 vertBearingY: b 

19 vertAdvance: B 

20""" 

21 

22smallGlyphMetricsFormat = """ 

23 > # big endian 

24 height: B 

25 width: B 

26 BearingX: b 

27 BearingY: b 

28 Advance: B 

29""" 

30 

31 

32class BitmapGlyphMetrics(object): 

33 def toXML(self, writer, ttFont): 

34 writer.begintag(self.__class__.__name__) 

35 writer.newline() 

36 for metricName in sstruct.getformat(self.__class__.binaryFormat)[1]: 

37 writer.simpletag(metricName, value=getattr(self, metricName)) 

38 writer.newline() 

39 writer.endtag(self.__class__.__name__) 

40 writer.newline() 

41 

42 def fromXML(self, name, attrs, content, ttFont): 

43 metricNames = set(sstruct.getformat(self.__class__.binaryFormat)[1]) 

44 for element in content: 

45 if not isinstance(element, tuple): 

46 continue 

47 name, attrs, content = element 

48 # Make sure this is a metric that is needed by GlyphMetrics. 

49 if name in metricNames: 

50 vars(self)[name] = safeEval(attrs["value"]) 

51 else: 

52 log.warning( 

53 "unknown name '%s' being ignored in %s.", 

54 name, 

55 self.__class__.__name__, 

56 ) 

57 

58 

59class BigGlyphMetrics(BitmapGlyphMetrics): 

60 binaryFormat = bigGlyphMetricsFormat 

61 

62 

63class SmallGlyphMetrics(BitmapGlyphMetrics): 

64 binaryFormat = smallGlyphMetricsFormat