blob: 521443327a06ee4eb5c0606f5e1754707184ead8 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
import simpletransform
import cubicsuperpath
from .units import get_viewbox_transform
def apply_transforms(path, node):
transform = get_node_transform(node)
# apply the combined transform to this node's path
simpletransform.applyTransformToPath(transform, path)
return path
def get_node_transform(node):
# start with the identity transform
transform = [[1.0, 0.0, 0.0], [0.0, 1.0, 0.0]]
# this if is because sometimes inkscape likes to create paths outside of a layer?!
if node.getparent() is not None:
# combine this node's transform with all parent groups' transforms
transform = simpletransform.composeParents(node, transform)
# add in the transform implied by the viewBox
viewbox_transform = get_viewbox_transform(node.getroottree().getroot())
transform = simpletransform.composeTransform(viewbox_transform, transform)
return transform
def get_correction_transform(node):
"""Get a transform to apply to new siblings of this SVG node"""
# if we want to place our new nodes in the same group/layer as this node,
# then we'll need to factor in the effects of any transforms set on
# the parents of this node.
# we can ignore the transform on the node itself since it won't apply
# to the objects we add
transform = get_node_transform(node.getparent())
# now invert it, so that we can position our objects in absolute
# coordinates
transform = simpletransform.invertTransform(transform)
return simpletransform.formatTransform(transform)
|
