67 lines
3.3 KiB
Python
67 lines
3.3 KiB
Python
#!/usr/bin/env python3
|
|
|
|
# Author: Mario Voigt / FabLab Chemnitz
|
|
# Mail: mario.voigt@stadtfabrikanten.org
|
|
# Date: 04.08.2020
|
|
# License: GNU GPL v3
|
|
|
|
import inkex
|
|
from inkex.paths import CubicSuperPath, Path
|
|
from inkex import Transform
|
|
from lxml import etree
|
|
from inkex.styles import Style
|
|
|
|
# This extension can scale any object or path on X, Y or both axes. This addon is kind of obsolete because you can do the same from transforms menu
|
|
|
|
class ScaleToSize(inkex.Effect):
|
|
def __init__(self):
|
|
inkex.Effect.__init__(self)
|
|
self.arg_parser.add_argument('--unit')
|
|
self.arg_parser.add_argument("--expected_size", type=float, default=1.0, help="The expected size of the object")
|
|
self.arg_parser.add_argument("--scale_type", default="Horizontal", help="Scale type (Uniform, Horizontal, Vertical)")
|
|
self.arg_parser.add_argument("--description")
|
|
|
|
def effect(self):
|
|
unit_factor = 1.0 / self.svg.uutounit(1.0,self.options.unit)
|
|
for id, node in self.svg.selected.items():
|
|
|
|
#get recent XY coordinates (top left corner of the bounding box)
|
|
bbox = node.bounding_box()
|
|
new_horiz_scale = self.options.expected_size * unit_factor / bbox.width
|
|
new_vert_scale = self.options.expected_size * unit_factor / bbox.height
|
|
|
|
if self.options.scale_type == "Horizontal":
|
|
translation_matrix = [[new_horiz_scale, 0.0, 0.0], [0.0, 1.0, 0.0]]
|
|
elif self.options.scale_type == "Vertical":
|
|
translation_matrix = [[1.0, 0.0, 0.0], [0.0, new_vert_scale, 0.0]]
|
|
else: #Uniform
|
|
translation_matrix = [[new_horiz_scale, 0.0, 0.0], [0.0, new_vert_scale, 0.0]]
|
|
node.transform = Transform(translation_matrix) * node.transform
|
|
|
|
# now that the node moved we need to get the nodes XY coordinates again to fix them
|
|
bbox_new = node.bounding_box()
|
|
|
|
#inkex.utils.debug(cx)
|
|
#inkex.utils.debug(cy)
|
|
#inkex.utils.debug(cx_new)
|
|
#inkex.utils.debug(cy_new)
|
|
|
|
# We remove the transformation attribute from SVG XML tree in case it's regular path. In case the node is an object like arc,circle, ellipse or star we have the attribute "sodipodi:type". Then we do not play with it's path because the size transformation will not apply (this code block is ugly)
|
|
if node.get ('sodipodi:type') is None and 'd' in node.attrib:
|
|
#inkex.utils.debug("it's a path!")
|
|
d = node.get('d')
|
|
p = CubicSuperPath(d)
|
|
transf = Transform(node.get("transform", None))
|
|
if 'transform' in node.attrib:
|
|
del node.attrib['transform']
|
|
p = Path(p).to_absolute().transform(transf, True)
|
|
node.set('d', Path(CubicSuperPath(p).to_path()))
|
|
#else:
|
|
#inkex.utils.debug("it's an object!")
|
|
|
|
#we perform second translation to reset the center of the path
|
|
translation_matrix = [[1.0, 0.0, bbox.left - bbox_new.left + (bbox.width - bbox_new.width)/2], [0.0, 1.0, bbox.top - bbox_new.top + (bbox.height - bbox_new.height)/2]]
|
|
node.transform = Transform(translation_matrix) * node.transform
|
|
|
|
if __name__ == '__main__':
|
|
ScaleToSize().run() |