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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 inkex import Boolean, Style
from lxml import etree
from ..stitch_plan import stitch_groups_to_stitch_plan
from ..svg import render_stitch_plan
from ..svg.tags import (INKSCAPE_GROUPMODE, SVG_DEFS_TAG, SVG_GROUP_TAG,
SVG_PATH_TAG)
from .base import InkstitchExtension
class StitchPlanPreview(InkstitchExtension):
def __init__(self, *args, **kwargs):
InkstitchExtension.__init__(self, *args, **kwargs)
self.arg_parser.add_argument("-s", "--move-to-side", type=Boolean, default=True, dest="move_to_side")
self.arg_parser.add_argument("-v", "--layer-visibility", type=int, default=0, dest="layer_visibility")
self.arg_parser.add_argument("-n", "--needle-points", type=Boolean, default=False, dest="needle_points")
def effect(self):
# delete old stitch plan
svg = self.document.getroot()
layer = svg.find(".//*[@id='__inkstitch_stitch_plan__']")
if layer is not None:
del layer[:]
# create new stitch plan
if not self.get_elements():
return
realistic = False
self.metadata = self.get_inkstitch_metadata()
collapse_len = self.metadata['collapse_len_mm']
patches = self.elements_to_stitch_groups(self.elements)
stitch_plan = stitch_groups_to_stitch_plan(patches, collapse_len=collapse_len)
render_stitch_plan(svg, stitch_plan, realistic)
# apply options
layer = svg.find(".//*[@id='__inkstitch_stitch_plan__']")
# update layer visibility 0 = unchanged, 1 = hidden, 2 = lower opacity
if self.options.layer_visibility == 1:
self.hide_all_layers()
layer.set('style', None)
elif self.options.layer_visibility == 2:
for g in self.document.getroot().findall(SVG_GROUP_TAG):
style = g.specified_style()
# check groupmode and exclude stitch_plan layer
# exclude objects which are not displayed at all or already have opacity < 0.4
if (g.get(INKSCAPE_GROUPMODE) == "layer" and not g == layer and
float(style.get('opacity', 1)) > 0.4 and not style.get('display', 'inline') == 'none'):
style += Style('opacity:0.4')
g.set("style", style)
# translate stitch plan to the right side of the canvas
if self.options.move_to_side:
layer.set('transform', 'translate(%s)' % svg.get('viewBox', '0 0 800 0').split(' ')[2])
else:
layer.set('transform', None)
# display needle points
if self.options.needle_points:
markers = 'marker-mid:url(#inkstitch-needle-point);marker-start:url(#inkstitch-needle-point);marker-end:url(#inkstitch-needle-point)'
for element in layer.iterdescendants(SVG_PATH_TAG):
style = ';'.join([element.get('style'), markers])
element.set('style', style)
self.ensure_marker()
def ensure_marker(self):
xpath = ".//svg:marker[@id='inkstitch-needle-point']"
point_marker = self.document.getroot().xpath(xpath)
if not point_marker:
# get or create def element
defs = self.document.find(SVG_DEFS_TAG)
if defs is None:
defs = etree.SubElement(self.document, SVG_DEFS_TAG)
# insert marker
marker = """<marker
orient="auto"
id="inkstitch-needle-point">
<circle
cx="0" cy="0" r="1.5"
style="fill:context-stroke;opacity:0.8;" />
</marker>"""
defs.append(etree.fromstring(marker))
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