def parse_transform(e, path):
""" Transform the path according to a defined matrix.
Attempts to extract a transform="matrix()|translate()" attribute.
Transforms the path accordingly.
"""
t = get_attribute(e, "transform", default="")
for mode in ("matrix", "translate"):
if t.startswith(mode):
v = t.replace(mode, "").lstrip("(").rstrip(")")
v = v.replace(", ", ",").replace(" ", ",")
v = [float(x) for x in v.split(",")]
from plotdevice.gfx import Transform
t = Transform()
if mode == "matrix":
t._set_matrix(v)
elif mode == "translate":
t.translate(*v)
path = t.transformBezierPath(path)
break
# Transformations can also be defined as <g transform="matrix()"><path /><g>
# instead of <g><path transform="matrix() /></g>.
e = e.parentNode
if e and e.tagName == "g":
path = parse_transform(e, path)
return path
def add_transform_matrix(e, path):
""" Transform the path according to a defined matrix.
Attempts to extract a transform="matrix()" attribute.
Transforms the path according to this matrix.
"""
matrix = e.getAttribute("transform")
if matrix.startswith("matrix("):
matrix = matrix.replace("matrix(", "").rstrip(")")
matrix = matrix.split(",")
matrix = [float(v) for v in matrix]
from plotdevice.gfx import Transform
t = Transform()
t._set_matrix(matrix)
path = t.transformBezierPath(path)
return path
