mirror of
https://github.com/pklaus/brother_ql_web.git
synced 2024-05-25 11:56:53 +03:00
Added support for multiple printers
Fixed runtime errors (on osx)
This commit is contained in:
Joris Reijrink
parent
0a2cf12c39
commit
9962289dd1
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@ -1,4 +1,5 @@
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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This is a web service to print labels on Brother QL label printers.
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@ -21,6 +22,8 @@ logger = logging.getLogger(__name__)
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LABEL_SIZES = [ (name, label_type_specs[name]['name']) for name in label_sizes]
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PRINTERS = {}
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try:
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with open('config.json') as fh:
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CONFIG = json.load(fh)
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@ -45,7 +48,8 @@ def labeldesigner():
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'fonts': FONTS,
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'label_sizes': LABEL_SIZES,
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'website': CONFIG['WEBSITE'],
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'label': CONFIG['LABEL']}
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'label': CONFIG['LABEL'],
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'printers': PRINTERS }
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def get_label_context(request):
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""" might raise LookupError() """
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@ -69,6 +73,7 @@ def get_label_context(request):
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'margin_bottom': float(d.get('margin_bottom', 45))/100.,
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'margin_left': float(d.get('margin_left', 35))/100.,
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'margin_right': float(d.get('margin_right', 35))/100.,
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'printer_name': d.get('printer_name', None),
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}
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context['margin_top'] = int(context['font_size']*context['margin_top'])
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context['margin_bottom'] = int(context['font_size']*context['margin_bottom'])
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@ -179,11 +184,15 @@ def print_text():
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try:
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context = get_label_context(request)
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except LookupError as e:
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return_dict['error'] = e.msg
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return_dict['message'] = e.msg
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return return_dict
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if context['text'] is None:
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return_dict['error'] = 'Please provide the text for the label'
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if not context['text'] or context['text'] is None:
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return_dict['message'] = 'Please provide the text for the label'
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return return_dict
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if not context['printer_name'] or context['printer_name'] is None:
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return_dict['message'] = 'Please select a printer'
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return return_dict
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im = create_label_im(**context)
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@ -194,12 +203,20 @@ def print_text():
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elif context['kind'] in (ROUND_DIE_CUT_LABEL, DIE_CUT_LABEL):
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rotate = 'auto'
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qlr = BrotherQLRaster(CONFIG['PRINTER']['MODEL'])
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qlr = BrotherQLRaster(PRINTERS[context['printer_name']]["MODEL"])
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create_label(qlr, im, context['label_size'], threshold=context['threshold'], cut=True, rotate=rotate)
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try:
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selected_backend = guess_backend(PRINTERS[context['printer_name']]["LOCATION"])
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except Exception as e:
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return_dict['message'] = str(e)
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return return_dict
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BACKEND_CLASS = backend_factory(selected_backend)['backend_class']
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if not DEBUG:
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try:
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be = BACKEND_CLASS(CONFIG['PRINTER']['PRINTER'])
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be = BACKEND_CLASS(PRINTERS[context['printer_name']]["LOCATION"])
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be.write(qlr.data)
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be.dispose()
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del be
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@ -219,13 +236,13 @@ def main():
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parser.add_argument('--loglevel', type=lambda x: getattr(logging, x.upper()), default=False)
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parser.add_argument('--font-folder', default=False, help='folder for additional .ttf/.otf fonts')
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parser.add_argument('--default-label-size', default=False, help='Label size inserted in your printer. Defaults to 62.')
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parser.add_argument('--default-orientation', default=False, choices=('standard', 'rotated'), help='Label orientation, defaults to "standard". To turn your text by 90°, state "rotated".')
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parser.add_argument('--default-orientation', default=False, choices=('standard', 'rotated'), help='Label orientation, defaults to "standard". To turn your text by 90 degrees, state "rotated".')
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parser.add_argument('--model', default=False, choices=models, help='The model of your printer (default: QL-500)')
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parser.add_argument('printer', nargs='?', default=False, help='String descriptor for the printer to use (like tcp://192.168.0.23:9100 or file:///dev/usb/lp0)')
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args = parser.parse_args()
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if args.printer:
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CONFIG['PRINTER']['PRINTER'] = args.printer
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CONFIG['PRINTERS']['PRINTER'] = args.printer
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if args.port:
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PORT = args.port
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@ -243,7 +260,7 @@ def main():
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DEBUG = False
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if args.model:
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CONFIG['PRINTER']['MODEL'] = args.model
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CONFIG['PRINTERS']['MODEL'] = args.model
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if args.default_label_size:
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CONFIG['LABEL']['DEFAULT_SIZE'] = args.default_label_size
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@ -259,12 +276,6 @@ def main():
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logging.basicConfig(level=LOGLEVEL)
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try:
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selected_backend = guess_backend(CONFIG['PRINTER']['PRINTER'])
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except ValueError:
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parser.error("Couln't guess the backend to use from the printer string descriptor")
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BACKEND_CLASS = backend_factory(selected_backend)['backend_class']
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if CONFIG['LABEL']['DEFAULT_SIZE'] not in label_sizes:
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parser.error("Invalid --default-label-size. Please choose on of the following:\n:" + " ".join(label_sizes))
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@ -290,6 +301,9 @@ def main():
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CONFIG['LABEL']['DEFAULT_FONTS'] = {'family': family, 'style': style}
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sys.stderr.write('The default font is now set to: {family} ({style})\n'.format(**CONFIG['LABEL']['DEFAULT_FONTS']))
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for printer in CONFIG['PRINTERS']:
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PRINTERS[printer["NAME"]] = printer
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run(host=CONFIG['SERVER']['HOST'], port=PORT, debug=DEBUG)
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if __name__ == "__main__":
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@ -5,10 +5,13 @@
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"LOGLEVEL": "WARNING",
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"ADDITIONAL_FONT_FOLDER": false
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},
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"PRINTER": {
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"MODEL": "QL-500",
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"PRINTER": "file:///dev/usb/lp1"
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},
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"PRINTERS": [
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{
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"NAME": "Labelprinter",
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"MODEL": "QL-500",
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"LOCATION": "file:///dev/usb/lp1"
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}
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],
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"LABEL": {
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"DEFAULT_SIZE": "62",
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"DEFAULT_ORIENTATION": "standard",
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@ -20,6 +20,7 @@ def get_fonts(folder=None):
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if not line: continue
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if 'otf' not in line and 'ttf' not in line: continue
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parts = line.split(':')
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if len(parts) < 3: continue
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path = parts[0]
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families = parts[1].strip().split(',')
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styles = parts[2].split('=')[1].split(',')
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@ -116,6 +116,18 @@
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<label for="previewImg">Label Preview:</label><br />
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<img id="previewImg" style="border: 1px solid #444; max-height: 350px; width: auto; max-width: 100%; margin-bottom: 10px;"/>
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<p>Printed size w/o margins: <span id="labelWidth">?</span> cm x <span id="labelHeight">?</span> cm</p>
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<div {% if printers|length == 1 %} hidden {% endif %}>
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<label for="printer">Printer:</label>
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<select class="form-control" id="printer">
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<option value="" disabled {% if printers|length > 1 %} selected {% endif %} > -- select a printer -- </option>
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{% for printer in printers %}
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<option value="{{printer}}" {% if printers|length == 1 %} selected {% endif %} >{{printer}}</option>
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{% endfor %}
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</select>
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<br/>
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</div>
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<button id="printButton" type="button" class="btn btn-primary btn-block btn-lg" onClick="print()">
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<span class="glyphicon glyphicon-print" aria-hidden="true"></span> Print
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</button>
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@ -136,9 +148,8 @@
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var text = $('#labelText');
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function formData() {
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//var text = $('#labelText').val().replace(/\n/g, "%0A");
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var text = $('#labelText').val();
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if (text == '') text = ' ';
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return {
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text: text,
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font_family: $('#fontFamily option:selected').text(),
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@ -149,7 +160,8 @@ function formData() {
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margin_top: $('#marginTop').val(),
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margin_bottom: $('#marginBottom').val(),
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margin_left: $('#marginLeft').val(),
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margin_right: $('#marginRight').val()
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margin_right: $('#marginRight').val(),
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printer_name: $('#printer option:selected').val()
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}
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}
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