kopia lustrzana https://github.com/inkstitch/inkstitch
87 wiersze
3.8 KiB
Python
87 wiersze
3.8 KiB
Python
# Authors: see git history
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#
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# Copyright (c) 2021 Authors
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# Licensed under the GNU GPL version 3.0 or later. See the file LICENSE for details.
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import inkex
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from shapely.geometry import Point
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from ..i18n import _
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from ..svg import PIXELS_PER_MM
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from ..svg.tags import INKSTITCH_ATTRIBS
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from .base import InkstitchExtension
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class LetteringForceLockStitches(InkstitchExtension):
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'''
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This extension helps font creators to add the force lock stitches attribute to the last objects of each glyph
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Font creators to add forced lock stitches on glyphs with accents / spaces.
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'''
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def __init__(self, *args, **kwargs):
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InkstitchExtension.__init__(self, *args, **kwargs)
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self.arg_parser.add_argument("-a", "--max_distance", type=float, default=3, dest="max_distance")
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self.arg_parser.add_argument("-i", "--min_distance", type=float, default=1, dest="min_distance")
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self.arg_parser.add_argument("-l", "--last_element", type=inkex.Boolean, dest="last_element")
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def effect(self):
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if self.options.max_distance < self.options.min_distance:
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inkex.errormssg(_("The maximum value is smaller than the minimum value."))
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# Set glyph layers to be visible. We don't want them to be ignored by self.elements
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self._update_layer_visibility('inline')
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# mark last elements of a glyph
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xpath = ".//svg:g[@inkscape:groupmode='layer']//svg:path[last()]"
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last_elements = self.document.xpath(xpath, namespaces=inkex.NSS)
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for last_element in last_elements:
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last_element.set('lastglyphelement', str(True))
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# find last point of an element
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if not self.get_elements():
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return
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previous_element = None
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last_stitch = None
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for element in self.elements:
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stitch_group = element.to_stitch_groups(None)
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# if the distance of the last stitch of the previous object to the first stitch of this objects
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# lies within the user defined distance range, set the force_lock_stitches-attribute.
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if last_stitch:
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first_stitch = stitch_group[0].stitches[0]
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first_stitch = Point(first_stitch.x, first_stitch.y)
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self._set_force_attribute(first_stitch, last_stitch, previous_element)
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# if this is the last element of a glyph, we don't want to compare it to the next element
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if element.node.get('lastglyphelement', False):
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previous_element = None
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last_stitch = None
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else:
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previous_element = element
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last_stitch = stitch_group[-1].stitches[-1]
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last_stitch = Point(last_stitch.x, last_stitch.y)
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# remove last element attributes again
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# set force lock stitches attribute if needed
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for last_element in last_elements:
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last_element.attrib.pop('lastglyphelement')
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if self.options.last_element:
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last_element.set(INKSTITCH_ATTRIBS['force_lock_stitches'], True)
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# hide glyph layers again
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self._update_layer_visibility('none')
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def _set_force_attribute(self, first_stitch, last_stitch, previous_element):
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distance_mm = first_stitch.distance(last_stitch) / PIXELS_PER_MM
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if distance_mm < self.options.max_distance and distance_mm > self.options.min_distance:
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previous_element.node.set(INKSTITCH_ATTRIBS['force_lock_stitches'], True)
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def _update_layer_visibility(self, display):
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xpath = ".//svg:g[@inkscape:groupmode='layer']"
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layers = self.document.xpath(xpath, namespaces=inkex.NSS)
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for layer in layers:
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display_style = 'display:%s' % display
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style = inkex.Style(layer.get('style', '')) + inkex.Style(display_style)
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layer.set('style', style)
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