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- from fontTools.pens.transformPen import TransformPen
- from fontTools.misc import etree
- from fontTools.misc.textTools import tostr
- from .parser import parse_path
- from .shapes import PathBuilder
- __all__ = [tostr(s) for s in ("SVGPath", "parse_path")]
- class SVGPath(object):
- """Parse SVG ``path`` elements from a file or string, and draw them
- onto a glyph object that supports the FontTools Pen protocol.
- For example, reading from an SVG file and drawing to a Defcon Glyph:
- import defcon
- glyph = defcon.Glyph()
- pen = glyph.getPen()
- svg = SVGPath("path/to/a.svg")
- svg.draw(pen)
- Or reading from a string containing SVG data, using the alternative
- 'fromstring' (a class method):
- data = '<?xml version="1.0" ...'
- svg = SVGPath.fromstring(data)
- svg.draw(pen)
- Both constructors can optionally take a 'transform' matrix (6-float
- tuple, or a FontTools Transform object) to modify the draw output.
- """
- def __init__(self, filename=None, transform=None):
- if filename is None:
- self.root = etree.ElementTree()
- else:
- tree = etree.parse(filename)
- self.root = tree.getroot()
- self.transform = transform
- @classmethod
- def fromstring(cls, data, transform=None):
- self = cls(transform=transform)
- self.root = etree.fromstring(data)
- return self
- def draw(self, pen):
- if self.transform:
- pen = TransformPen(pen, self.transform)
- pb = PathBuilder()
- # xpath | doesn't seem to reliable work so just walk it
- for el in self.root.iter():
- pb.add_path_from_element(el)
- original_pen = pen
- for path, transform in zip(pb.paths, pb.transforms):
- if transform:
- pen = TransformPen(original_pen, transform)
- else:
- pen = original_pen
- parse_path(path, pen)
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