Label dpi config (#3208)

* Updates for label printing settings:

- Make LABEL_ENABLE a global setting
- Add LABEL_DPI setting (default = 300)
- Add new global settings tab

* Use the configured DPI when printing labels

InvenTree/common/models.py

@@ -1008,6 +1008,23 @@ class InvenTreeSetting(BaseInvenTreeSetting):
             'validator': InvenTree.validators.validate_part_name_format
         },
 
+        'LABEL_ENABLE': {
+            'name': _('Enable label printing'),
+            'description': _('Enable label printing from the web interface'),
+            'default': True,
+            'validator': bool,
+        },
+
+        'LABEL_DPI': {
+            'name': _('Label Image DPI'),
+            'description': _('DPI resolution when generating image files to supply to label printing plugins'),
+            'default': 300,
+            'validator': [
+                int,
+                MinValueValidator(100),
+            ]
+        },
+
         'REPORT_ENABLE': {
             'name': _('Enable Reports'),
             'description': _('Enable generation of reports'),
@@ -1389,12 +1406,6 @@ class InvenTreeUserSetting(BaseInvenTreeSetting):
             'default': True,
             'validator': bool,
         },
-        'LABEL_ENABLE': {
-            'name': _('Enable label printing'),
-            'description': _('Enable label printing from the web interface'),
-            'default': True,
-            'validator': bool,
-        },
 
         "LABEL_INLINE": {
             'name': _('Inline label display'),

InvenTree/plugin/base/label/label.py

@@ -8,6 +8,7 @@ from django.utils.translation import gettext_lazy as _
 import pdf2image
 
 import common.notifications
+from common.models import InvenTreeSetting
 from InvenTree.exceptions import log_error
 from plugin.registry import registry
 
@@ -36,9 +37,10 @@ def print_label(plugin_slug: str, pdf_data, filename=None, label_instance=None,
         return
 
     # In addition to providing a .pdf image, we'll also provide a .png file
+    dpi = InvenTreeSetting.get_setting('LABEL_DPI', 300)
     png_file = pdf2image.convert_from_bytes(
         pdf_data,
-        dpi=300,
+        dpi=dpi,
     )[0]
 
     try:

InvenTree/templates/InvenTree/settings/label.html

@@ -0,0 +1,20 @@
+{% extends "panel.html" %}
+{% load i18n %}
+{% load inventree_extras %}
+
+{% block label %}labels{% endblock %}
+
+{% block heading %}
+{% trans "Label Settings" %}
+{% endblock %}
+
+{% block content %}
+
+<table class='table table-striped table-condensed'>
+    <tbody>
+        {% include "InvenTree/settings/setting.html" with key="LABEL_ENABLE" icon='fa-toggle-on' %}
+        {% include "InvenTree/settings/setting.html" with key="LABEL_DPI" icon='fa-toggle-on' %}
+    </tbody>
+</table>
+
+{% endblock %}

InvenTree/templates/InvenTree/settings/settings.html

@@ -33,6 +33,7 @@
 {% include "InvenTree/settings/login.html" %}
 {% include "InvenTree/settings/barcode.html" %}
 {% include "InvenTree/settings/currencies.html" %}
+{% include "InvenTree/settings/label.html" %}
 {% include "InvenTree/settings/report.html" %}
 {% include "InvenTree/settings/part.html" %}
 {% include "InvenTree/settings/category.html" %}

InvenTree/templates/InvenTree/settings/sidebar.html

@@ -34,6 +34,8 @@
 {% include "sidebar_item.html" with label='barcodes' text=text icon="fa-qrcode" %}
 {% trans "Currencies" as text %}
 {% include "sidebar_item.html" with label='currencies' text=text icon="fa-dollar-sign" %}
+{% trans "Label Printing" as text %}
+{% include "sidebar_item.html" with label='labels' text=text icon='fa-tag' %}
 {% trans "Reporting" as text %}
 {% include "sidebar_item.html" with label='reporting' text=text icon="fa-file-pdf" %}
 {% trans "Parts" as text %}

InvenTree/templates/InvenTree/settings/user_labels.html

@@ -14,7 +14,6 @@
 <div class='row'>
     <table class='table table-striped table-condensed'>
         <tbody>
-            {% include "InvenTree/settings/setting.html" with key="LABEL_ENABLE" icon='fa-toggle-on' user_setting=True %}
             {% include "InvenTree/settings/setting.html" with key="LABEL_INLINE" icon='fa-tag' user_setting=True %}
         </tbody>
     </table>

InvenTree/templates/base.html

@@ -7,7 +7,7 @@
 {% settings_value 'REPORT_ENABLE_TEST_REPORT' as test_report_enabled %}
 {% settings_value "REPORT_ENABLE" as report_enabled %}
 {% settings_value "SERVER_RESTART_REQUIRED" as server_restart_required %}
-{% settings_value "LABEL_ENABLE" with user=user as labels_enabled %}
+{% settings_value "LABEL_ENABLE" as labels_enabled %}
 {% inventree_show_about user as show_about %}
 
 <!DOCTYPE html>