aafigure fails to run examples : missing font files cause breakage

[Todd]

I have reproduced this error w/ both the installed debian package, and syncing via bzr and installing from source. Apparently, this is a known issue, mentioned in the code for aafigure/pil.py. The problem is that aafigure is not using a very sound method of finding font files. By default, pil.py is configured to look for Courier_New.ttf. However, on my ubuntu jaunty install, I do not have that font. So, PIL throws when it is asked to load a non-existent font. I hacked a font into aafigure/pil.py in order to verify that referencing an extant font file solves this problem, and it does.

INSTALL METHODS:
--------------------------
1. download and install this deb: https://launchpad.net/~aafigure-team/+archive/ppa/+files/python-aafigure_0.3_all.deb
2. bzr branch https://launchpad.net/aafigure; cd aafigure; sudo python setup.py install

REPRO:
----------
1. ~/sandbox/aafigure/aafigure/examples$ aafigure fill.txt -o test.png
2. Error getting font, or somesuch:

>>> File "/usr/lib/python2.6/dist-packages/PIL/ImageFont.py", line 121, in __init__
>>> self.font = _imagingft.getfont(file, size, index, encoding)
>>> IOError: cannot open resource

STACKTRACE:
------------------
Traceback (most recent call last):
  File "/usr/local/bin/aafigure", line 7, in <module>
    aafigure.aafigure.main()
  File "/usr/local/lib/python2.6/dist-packages/aafigure/aafigure.py", line 1067, in main
    (visitor, output) = render(input, output, options_dict)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/aafigure.py", line 896, in render
    visitor = process(input, visitor_class, options)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/aafigure.py", line 836, in process
    visitor.visit_image(aaimg)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/pil.py", line 66, in visit_image
    self.visit_shapes(aa_image.shapes)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/pil.py", line 82, in visit_shapes
    getattr(self, visitor_name)(shape)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/pil.py", line
 88, in visit_group
    self.visit_shapes(group.shapes)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/pil.py", line 82, in visit_shapes
    getattr(self, visitor_name)(shape)
  File "/usr/local/lib/python2.6/dist-packages/aafigure/pil.py", line 141, in visit_label
    font=ImageFont.truetype(self.font, int(self.aa_image.nominal_size*1.1*self.scale))
  File "/usr/lib/python2.6/dist-packages/PIL/ImageFont.py", line 205, in truetype
    return FreeTypeFont(filename, size, index, encoding)
  File "/usr/lib/python2.6/dist-packages/PIL/ImageFont.py", line 121, in __init__
    self.font = _imagingft.getfont(file, size, index, encoding)
IOError: cannot open resource

HACK:
#/usr/local/lib/python2.6/dist-packages/aafigure/pil.py

 20 class PILOutputVisitor:
 21 """Render a list of shapes as bitmap.
 22 """
 23
HOST DETAILS:

 24 def __init__(self, options):
 25 self.options = options
 26 self.scale = options['scale']*8
 27 self.debug = options['debug']
 28 self.line_width = options['line_width']
 29 self.foreground = options['foreground']
 30 self.background = options['background']
 31 self.fillcolor = options['fill']
 32 # if front is given explicit, use it instead of textual/proportional flags
 33 if 'font' in options:
 34 self.font = options['font']
 35 else:
 36 # XXX find a good way to locate font files... as the following does not
 37 # work on all platforms
 38 if options['proportional']:
 39 self.font = 'Arial.ttf'
 40 else:
 41 #self.font = 'Courier_New.ttf' # original code, broken, as I don't have this font
 42 #self.font = 'ae_AlMohanad.ttf' # referencing extant font by name, also broken
 43 self.font = '/usr/share/fonts/truetype/ttf-arabeyes/ae_AlMohanad.ttf' # referencing extant font by fully qualified path works

SIMILAR BUGS:
 * http://trac-hacks.org/ticket/3367
 * http://trac-hacks.org/ticket/3368

[luca (llucax)]

I think this is a known PIL issue. As a workarround you can use the new -O command line option to pass a custom font to the PIL backend.

This should work for you:

aafigure fill.txt -o test.png -O font=/usr/share/fonts/truetype/ttf-arabeyes/ae_AlMohanad.ttf