Label creation and print
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@@ -4,17 +4,33 @@
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{% block title %}Container: {{ container.named_id }}{% endblock %}
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{% block content %}
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===== Print Label Content =====
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<h1>Print Container Label</h1>
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<!-- Action buttons -->
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<div class="row">
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<div class="col-sm-12">
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Label created for container {{ container.named_id }} of type {{ container.container_type.named_id }}
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Label created for container {{ container.named_id }} of type {{ container.container_type.named_id }}:
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<br />
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<img class="img-fluid shadow p-3 mb-5 bg-body rounded" src="{{ barcode_img }}">
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</div>
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<div class="col-sm-12">
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<form method="gest">
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{% csrf_token %}
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<label for="num_copies">Number of copies:</label><input type="number" id="num_copies" size="2" min="1" max="8" name="num_copies" value="1">
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<input type="submit" class="btn btn-primary" value="Print">
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</form>
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</div>
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<div class="col-sm-12">
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<!--
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{% if logs %}
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{% for msg in logs %}
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{{ msg }}<br />
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{% endfor %}
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{% else %}
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no messages
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{% endif %}
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-->
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</div>
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</div>
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<!-- End Action buttons -->
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@@ -1,6 +1,8 @@
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from django.views import generic
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from .models import Container, ContainerType
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from labelprinter.labels import container_label
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import logging, json
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logger = logging.getLogger(__name__)
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class ContainerListView(generic.ListView):
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@@ -62,22 +64,81 @@ class ContainerPrintLabelView(generic.DetailView):
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def get_context_data(self, **kwargs):
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context = super().get_context_data(**kwargs)
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from labelprinter.labels import container_label
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num_copies = int(self.request.GET['num_copies']) if 'num_copies' in self.request.GET else 0
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context['num_copies'] = num_copies
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context['logs'] = ['creating label for container ' + self.object.named_id]
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from labelprinter.labels import container_label, pil_to_html_imgdata
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container_description = self.object.container_type.named_id
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if len(self.object.container_type.description) > 0:
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container_description += ': ' + self.object.container_type.description
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if len(self.object.description) > 0:
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container_description += ' / ' + self.object.description
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context['barcode_img'] = container_label(self.object.named_id, description=container_description, writer_options={'background': 'white',
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'font_size': 10,
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'foreground': 'black',
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'module_height': 10.0,
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'module_width': 0.2,
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'quiet_zone': 2.5,
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'text': 'This is the text',
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'text_distance': 3.0,
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'write_text': True
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})
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container_description_line2 = self.object.description
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label_image = container_label(
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self.object.named_id,
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fmt='image',
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description=container_description,
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description_line2=container_description_line2,
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writer_options={'font_size': 14,
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'module_height': 10.0,
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'quiet_zone': 4.5,
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'text': 'This is the text',
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'text_distance': 1.0
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})
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context['barcode_img'] = pil_to_html_imgdata(label_image, fmt='PNG')
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context['logs'].append('Image created')
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if num_copies > 0:
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#from brother_ql.devicedependent import models, label_type_specs, label_sizes
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#from brother_ql.devicedependent import ENDLESS_LABEL, DIE_CUT_LABEL, ROUND_DIE_CUT_LABEL
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from brother_ql import BrotherQLRaster, create_label
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from brother_ql.backends import backend_factory, guess_backend
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try:
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with open('config.json', encoding='utf-8') as fh:
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config = json.load(fh)
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except FileNotFoundError as e:
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with open('config.example.json', encoding='utf-8') as fh:
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config = json.load(fh)
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# LABEL_SIZES = [(name, label_type_specs[name]['name']) for name in label_sizes]
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'''
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if context['kind'] == ENDLESS_LABEL:
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rotate = 0 if context['orientation'] == 'standard' else 90
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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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red = False
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if 'red' in context['label_size']:
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red = True
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'''
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qlr = BrotherQLRaster(config['PRINTER']['MODEL'])
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context['logs'].append('Connected to printer')
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create_label(qlr, image=label_image, label_size='62', red=False, threshold=1,
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cut=True, rotate='auto')
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context['logs'].append('Created raster information')
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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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context['messages'].append(
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"Could't guess the backend to use from the printer string descriptor (config PRINTER.PRINTER)")
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context['logs'].append('Backend found: ' + selected_backend)
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try:
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be_class = backend_factory(selected_backend)['backend_class']
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be = be_class(config['PRINTER']['PRINTER'])
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context['logs'].append('Got backend driver')
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for i in range(1,num_copies):
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be.write(qlr.data)
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context['logs'].append('Data sent to printer')
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be.dispose()
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del be
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except Exception as e:
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context['logs'].append('Exception: ' + str(e))
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logger.warning('Exception happened: %s', e)
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context['logs'].append('Finished printing label')
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return context
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