88 lines
3.1 KiB
Python
88 lines
3.1 KiB
Python
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#!/usr/bin/env python
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# These two lines are only needed if you don't put the script directly into
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# the installation directory
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import sys
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import simplestyle # will be needed here for styles support
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sys.path.append('/usr/share/inkscape/extensions')
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# We will use the inkex module with the predefined Effect base class.
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import inkex
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import fablabchemnitz_metaext
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class AddKerf(inkex.Effect):
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"""
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An Inkscape extension which joins multiple lines in one object and adds
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kerf to it.
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"""
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def __init__(self):
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"""
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Constructor.
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"""
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# Call the base class constructor.
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inkex.Effect.__init__(self)
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# Define string option "--what" with "-w" shortcut and default value "World".
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# TODO: better name
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self.OptionParser.add_option('-w', '--what', action = 'store',
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type = 'float', dest = 'what', default = '0.0',
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help = 'Kerf in 1/10 mm.')
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def set_appropriate_width(self, kerf_in_mm):
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found = False
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for _, node in self.selected.iteritems():
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if node.tag == inkex.addNS('g', 'svg'):
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inkex.error("Can't add kerf to a group, please ungroup first.")
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if node.tag == inkex.addNS('path', 'svg'):
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style = {'stroke-width': kerf_in_mm, 'fill': 'none',
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'stroke':'#000000'}
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style = simplestyle.formatStyle(style)
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node.set('style', style)
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found = True
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return found
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def effect(self):
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"""% mod
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Effect behaviour.
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"""
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# Get script's "--what" option value.
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what = self.options.what / 10.
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negative_kerf = False
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if what < 0.:
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what = -what
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negative_kerf = True
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kerf_in_mm = self.unittouu(str(what) + " mm")
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operation_list = ["StrokeToPath", "SelectionUnion",
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"SelectionBreakApart", "SelectionUnion", "SelectionBreakApart"]
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if negative_kerf:
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operation_list[-2] = "SelectionIntersect"
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join_ext = fablabchemnitz_metaext.MetaEffect(operation_list)
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if not self.set_appropriate_width(kerf_in_mm):
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objectify = fablabchemnitz_metaext.MetaEffect(["ObjectToPath"])
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objectify.effect(self.document, self.selected, self.doc_ids)
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if not self.set_appropriate_width(kerf_in_mm):
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inkex.error("Didn't found any selected path, breaking")
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return
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join_ext.effect(self.document, self.selected, self.doc_ids)
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for _, node in self.selected.iteritems():
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#inkex.debug("node %s" % inkex.etree.tostring(node))
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if node.tag == inkex.addNS('path', 'svg'):
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new_width = self.unittouu("0.5mm")
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colour = '#ff0000' if negative_kerf else '#000000'
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style = {'stroke-width': new_width, 'fill': 'none',
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'stroke': colour}
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style = simplestyle.formatStyle(style)
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node.set('style', style)
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# inkex.debug("node %s" % inkex.etree.tostring(node))
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# Create effect instance and apply it.
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effect = AddKerf()
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effect.affect()
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