Add option to specify the font to use

The bundled font may not always be the right choice for a given barcode,
so I've added an option for the user to specify the font to use. Simply
pass the full path to the font file using the font_path option.

Author: jgbishop

barcode/DejaVuSansMono.ttf barcode/fonts/DejaVuSansMono.ttfbarcode/DejaVuSansMono.ttf renamed to barcode/fonts/DejaVuSansMono.ttf

@@ -49,7 +49,6 @@ def create_svg_object():
 SIZE = '{0:.3f}mm'
 COMMENT = 'Autogenerated with python-barcode {0}'.format(version)
 PATH = os.path.dirname(os.path.abspath(__file__))
-FONT = os.path.join(PATH, 'DejaVuSansMono.ttf')
 
 
 class BaseWriter(object):
@@ -87,6 +86,7 @@ def __init__(
         }
         self.module_width = 10
         self.module_height = 10
+        self.font_path = os.path.join(PATH, 'fonts', 'DejaVuSansMono.ttf')
         self.font_size = 10
         self.quiet_zone = 6.5
         self.background = 'white'
@@ -352,8 +352,8 @@ def _paint_module(self, xpos, ypos, width, color):
             self._draw.rectangle(size, outline=color, fill=color)
 
         def _paint_text(self, xpos, ypos):
+            font = ImageFont.truetype(self.font_path, self.font_size * 2)
             for subtext in self.text.split('\n'):
-                font = ImageFont.truetype(FONT, self.font_size * 2)
                 width, height = font.getsize(subtext)
                 # determine the maximum width of each line
                 pos = (

barcode/writer.py

@@ -31,6 +31,10 @@ Common Options:
     (last) barcode module in mm as *float*.
     Defaults to **6.5**.
 
+:font_path:
+    Path to the font file to be used. Defaults to **DejaVuSansMono** (which
+    is bundled with this package).
+
 :font_size:
     Font size of the text under the barcode in pt as *integer*.
     Defaults to **10**.