center text on die-cut labels; improved annotation in web iface

brother_ql_web.py

@@ -106,7 +106,11 @@ def create_label_im(text, **kwargs):
     im = Image.new('L', (kwargs['width'], height), 'white')
     draw = ImageDraw.Draw(im)
     textsize = draw.multiline_textsize(text, font=im_font)
-    vertical_offset = 0 #(height - textsize[1])//2
+    if 'x' in kwargs['label_size']:
+        # die-cut labels
+        vertical_offset = (height - textsize[1])//2
+    else:
+        vertical_offset = 0
     horizontal_offset = max((kwargs['width'] - textsize[0])//2, 0)
     if 'ttf' in kwargs['font_path']: vertical_offset -= 10
     offset = horizontal_offset, vertical_offset

views/labeldesigner.jinja2

@@ -6,6 +6,7 @@
   <div class="row">
     <div class="col-md-4">
       <fieldset class="form-group">
+        <label for="labelSize">Label Size:</label>
         <select class="form-control" id="labelSize" onChange="preview()">
           {% for label_size in label_sizes %}<option value="{{label_size[0]}}">{{label_size[1]}}</option>{% endfor %}
         </select>