69 lines
2.2 KiB
Python
69 lines
2.2 KiB
Python
# translation
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from django.utils.translation import gettext_lazy as _
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from django.core.validators import MinValueValidator
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from django.core.validators import MaxValueValidator
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# printer supportt
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import socket
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# InvenTree plugin libs
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from plugin import InvenTreePlugin
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from plugin.mixins import LabelPrintingMixin, SettingsMixin
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from inventree_phomemo.version import PHOMEMO_PLUGIN_VERSION
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class PhomemoLabelPlugin(LabelPrintingMixin, SettingsMixin, InvenTreePlugin):
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AUTHOR = "Sergal.engineering"
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DESCRIPTION = "Label printing plugin for Phomemo printers"
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VERSION = PHOMEMO_PLUGIN_VERSION
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NAME = "Phomemo"
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SLUG = "phomemo"
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TITLE = "Phomemo Label Printer"
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SETTINGS = {
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'IP_ADDRESS': {
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'name': _('IP Address'),
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'description': _('IP address of phomemo print server'),
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'default': '',
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},
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'PORT': {
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'name': _('Port'),
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'description': _('Port of phomemo print server'),
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'default': '9100',
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},
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'THRESHOLD': {
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'name': _('Threshold'),
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'description': _('Threshold for B/W conversion (0-255)'),
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'validator': [int, MinValueValidator(0), MaxValueValidator(255)],
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'default': 200,
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},
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}
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def print_label(self, **kwargs):
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# Read settings
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ip_address = self.get_setting('IP_ADDRESS')
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port = int(self.get_setting('PORT'))
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threshold = self.get_setting('THRESHOLD')
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label_image = kwargs['png_file']
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# Extract width (x) and height (y) information.
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width = kwargs['width']
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height = kwargs['height']
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# convert image to B/W
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fn = lambda x: 255 if x > threshold else 0
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label_image = label_image.convert('L').point(fn, mode='1')
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##### Convert to phomemo
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# Send the label to the printer
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try:
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print_socket = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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print_socket.settimeout(5)
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print_socket.connect((ip_address, port))
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data = label_image
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print_socket.send(data.encode())
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print_socket.close()
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except Exception as error:
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raise ConnectionError('Error connecting to printer server: ' + str(error))
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