inkstitch/lib/extensions/output.py

52 wiersze
1.9 KiB
Python

import sys
import traceback
import os
import inkex
import tempfile
from .base import InkstitchExtension
from ..i18n import _
from ..output import write_embroidery_file
from ..stitch_plan import patches_to_stitch_plan
from ..svg import render_stitch_plan, PIXELS_PER_MM
from ..utils.io import save_stdout
class Output(InkstitchExtension):
def __init__(self, *args, **kwargs):
InkstitchExtension.__init__(self)
self.OptionParser.add_option("-c", "--collapse_len_mm",
action="store", type="float",
dest="collapse_length_mm", default=3.0,
help="max collapse length (mm)")
self.OptionParser.add_option("-f", "--format",
dest="file_extension",
help="file extension to output (example: DST)")
def effect(self):
if not self.get_elements():
return
patches = self.elements_to_patches(self.elements)
stitch_plan = patches_to_stitch_plan(patches, self.options.collapse_length_mm * PIXELS_PER_MM)
# libembroidery wants to write to an actual file rather than stdout
temp_file = tempfile.NamedTemporaryFile(suffix=".%s" % self.options.file_extension, delete=False)
# in windows, failure to close here will keep the file locked
temp_file.close()
# libembroidery likes to debug log things to stdout. No way to disable it.
save_stdout()
write_embroidery_file(temp_file.name, stitch_plan, self.document.getroot())
# inkscape will read the file contents from stdout and copy
# to the destination file that the user chose
with open(temp_file.name) as output_file:
sys.real_stdout.write(output_file.read())
# clean up the temp file
os.remove(temp_file.name)
# don't let inkex output the SVG!
sys.exit(0)