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# Authors: see git history
#
# Copyright (c) 2010 Authors
# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
from math import degrees
from inkex import PathElement, errormsg
from ..elements import FillStitch
from ..elements.gradient_fill import gradient_shapes_and_attributes
from ..i18n import _
from ..svg import get_correction_transform
from ..svg.tags import INKSTITCH_ATTRIBS
from .base import InkstitchExtension
class GradientBlocks(InkstitchExtension):
'''
This will break apart fill objects with a gradient fill into solid color blocks with end_row_spacing.
'''
def effect(self):
if not self.svg.selection:
errormsg(_("Please select at least one object with a gradient fill."))
return
if not self.get_elements():
return
elements = [element for element in self.elements if (isinstance(element, FillStitch) and self.has_gradient_color(element))]
if not elements:
errormsg(_("Please select at least one object with a gradient fill."))
return
for element in elements:
parent = element.node.getparent()
correction_transform = get_correction_transform(element.node)
style = element.node.style
index = parent.index(element.node)
fill_shapes, attributes = gradient_shapes_and_attributes(element, element.shape)
# reverse order so we can always insert with the same index number
fill_shapes.reverse()
attributes.reverse()
for i, shape in enumerate(fill_shapes):
style['fill'] = attributes[i]['color']
end_row_spacing = attributes[i]['end_row_spacing'] or None
angle = degrees(attributes[i]['angle'])
d = "M " + " ".join([f'{x}, {y}' for x, y in list(shape.exterior.coords)]) + " Z"
block = PathElement(attrib={
"id": self.uniqueId("path"),
"style": str(style),
"transform": correction_transform,
"d": d,
INKSTITCH_ATTRIBS['angle']: f'{angle: .2f}'
})
if end_row_spacing:
block.set('inkstitch:end_row_spacing_mm', f'{end_row_spacing: .2f}')
block.set('inkstitch:underpath', False)
parent.insert(index, block)
parent.remove(element.node)
def has_gradient_color(self, element):
return element.color.startswith('url') and "linearGradient" in element.color
if __name__ == '__main__':
e = GradientBlocks()
e.effect()
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