PTouch tape template for Inkscape 1.x

ptouch_tape2.inx

<?xml version="1.0" encoding="UTF-8"?>
<inkscape-extension xmlns:inkscape="http://www.inkscape.org/namespaces/inkscape">
    <_name>PTouch Tape</_name>
    <id>org.inkscape.render.ptouch_tape2</id>
    <dependency type="executable" location="extensions">ptouch_tape2.py</dependency>
    <dependency type="executable" location="extensions">inkex.py</dependency>

    <!-- TODO Not sure about the valid printing region (conflicts with what
         datasheet says). More tests needed. -->
    <!-- Format: width,valid_width,offset -->
    <param name="type" _gui-text="Tape type:" type="enum">
        <item value="3.5,3.5,0.0">TZe 3.5mm</item>
        <item value="6,4.6,0.7">TZe 6mm</item>
        <item value="9,6,1.5">TZe 9mm</item>
        <item value="12,9,1.5">TZe 12mm</item>
        <item value="18,15,1.5">TZe 18mm</item>
        <item value="24,18,3.0">TZe 24mm</item>
    </param>
    <param name="length" _gui-text="Print length (mm):" type="float" min="4.4" max="1000">100.0</param>
    <param name="gen-grid" _gui-text="Generate grid" type="boolean">true</param>
    <param name="boundary" _gui-text="Generate boundary guide" type="boolean">true</param>
    <param name="note_gen" _gui-text="Grid and boundary guide generation only works on supported tape width." type="description"/>

    <effect needs-live-preview="false">
        <object-type>all</object-type>
        <effects-menu hidden="true" />
    </effect>

    <inkscape:_templateinfo>
      <inkscape:_name>PTouch Tape...</inkscape:_name>
      <inkscape:author>dogtopus</inkscape:author>
      <inkscape:_shortdesc>PTouch tape template.</inkscape:_shortdesc>
      <inkscape:date>2018-06-15</inkscape:date>
      <inkscape:_keywords>ptouch label tape</inkscape:_keywords>
    </inkscape:_templateinfo>
    <script>
        <command reldir="extensions" interpreter="python">ptouch_tape2.py</command>
    </script>
</inkscape-extension>

ptouch_tape2.py

#!/usr/bin/env python3

import inkex
from collections import namedtuple


TapeType = namedtuple('TapeType', ('width', 'valid_width', 'offset'))


def parse_tape_type(str_):
    width, valid_width, offset = str_.split(',')
    return TapeType(float(width), float(valid_width), float(offset))


class PTouchTape(inkex.extensions.TemplateExtension):
    def add_arguments(self, p):
        p.add_argument('--type',
                       type=parse_tape_type,
                       dest='type_',
                       default=TapeType(12.0, 9.0, 1.5),
                       help='Tape type')
        p.add_argument('--length',
                       type=float,
                       default=100.0,
                       help='Print length (mm)')
        p.add_argument('--gen-grid',
                       type=inkex.utils.Boolean,
                       default=True,
                       help='Generate grid')
        p.add_argument('--boundary',
                       type=inkex.utils.Boolean,
                       default=True,
                       help='Generate boundary guide')

    def get_size(self):
        return (self.options.length, 'mm', self.options.type_.width, 'mm')

    def set_namedview(self, width, height, unit):
        super().set_namedview(width, height, unit)
        width, valid_width, offset = self.options.type_
        self.svg.namedview.set('inkscape:document-units', 'mm')
        self.svg.namedview.set('inkscape:pageopacity', '1.0')

        if self.options.gen_grid:
            grid = inkex.Grid()
            grid.set('type', 'xygrid')
            grid.set('units', 'mm')
            grid.set('spacingx', '0.5')
            grid.set('spacingy', '0.5')
            grid.set('originx', '0.0')
            grid.set('originy', str(width-valid_width-offset))
            grid.set('enabled', 'true')
            grid.set('snapvisiblegridlinesonly', 'true')
            grid.set('visible', 'true')
            grid.set('dotted', 'false')
            self.svg.namedview.add(grid)

        if self.options.boundary:
            self.svg.namedview.new_guide(width-valid_width-offset, name='Label Boundary')
            self.svg.namedview.new_guide(width-offset, name='Label Boundary')


if __name__ == '__main__':
    PTouchTape().run()