Coverage for /usr/lib/python3/dist-packages/fontTools/colorLib/unbuilder.py: 22%

1from fontTools.ttLib.tables import otTables as ot 

2from .table_builder import TableUnbuilder 

3 

4 

5def unbuildColrV1(layerList, baseGlyphList): 

6 layers = [] 

7 if layerList: 

8 layers = layerList.Paint 

9 unbuilder = LayerListUnbuilder(layers) 

10 return { 

11 rec.BaseGlyph: unbuilder.unbuildPaint(rec.Paint) 

12 for rec in baseGlyphList.BaseGlyphPaintRecord 

13 } 

14 

15 

16def _flatten_layers(lst): 

17 for paint in lst: 

18 if paint["Format"] == ot.PaintFormat.PaintColrLayers: 

19 yield from _flatten_layers(paint["Layers"]) 

20 else: 

21 yield paint 

22 

23 

24class LayerListUnbuilder: 

25 def __init__(self, layers): 

26 self.layers = layers 

27 

28 callbacks = { 

29 ( 

30 ot.Paint, 

31 ot.PaintFormat.PaintColrLayers, 

32 ): self._unbuildPaintColrLayers, 

33 } 

34 self.tableUnbuilder = TableUnbuilder(callbacks) 

35 

36 def unbuildPaint(self, paint): 

37 assert isinstance(paint, ot.Paint) 

38 return self.tableUnbuilder.unbuild(paint) 

39 

40 def _unbuildPaintColrLayers(self, source): 

41 assert source["Format"] == ot.PaintFormat.PaintColrLayers 

42 

43 layers = list( 

44 _flatten_layers( 

45 [ 

46 self.unbuildPaint(childPaint) 

47 for childPaint in self.layers[ 

48 source["FirstLayerIndex"] : source["FirstLayerIndex"] 

49 + source["NumLayers"] 

50 ] 

51 ] 

52 ) 

53 ) 

54 

55 if len(layers) == 1: 

56 return layers[0] 

57 

58 return {"Format": source["Format"], "Layers": layers} 

59 

60 

61if __name__ == "__main__": 

62 from pprint import pprint 

63 import sys 

64 from fontTools.ttLib import TTFont 

65 

66 try: 

67 fontfile = sys.argv[1] 

68 except IndexError: 

69 sys.exit("usage: fonttools colorLib.unbuilder FONTFILE") 

70 

71 font = TTFont(fontfile) 

72 colr = font["COLR"] 

73 if colr.version < 1: 

74 sys.exit(f"error: No COLR table version=1 found in {fontfile}") 

75 

76 colorGlyphs = unbuildColrV1( 

77 colr.table.LayerList, 

78 colr.table.BaseGlyphList, 

79 ) 

80 

81 pprint(colorGlyphs)