[Image-SIG] Truetype representation in Windows and Linux

[Bob Ippolito]

The FreeType port on FreeBSD has an option to *turn off* the bytecode  
interpreter (WITHOUT_TTF_BYTECODE_ENABLED). Presumably that's not the  
issue because you'd have had to intentionally turn it off.

Perhaps FreeType's implementation just isn't as good as the one in  
Windows.

-bob

On Jul 29, 2006, at 12:31 PM, <daniel at roseman.org.uk>  
<daniel at roseman.org.uk> wrote:

> Thanks for the tip. Any clues on how to go about this? I'm actually  
> using the FreeBSD
> ports (I lied about Linux) and I'm not really up to speed with  
> building stuff. What
> would I need to run to fix this?
>
> Sorry about the newbie questions and thanks for any help.
> --
> DR.
>
>
> On Sat, 29 Jul 2006 14:54:04 -0400 (EDT), "Adam Twardoch"  
> <adam at twardoch.com> wrote:
>> My guess is that on your Windows machine, FreeType (that is used  
>> to render
>> texts from PIL) is compiled with native TrueType hinting support  
>> enabled
>> while on Linux, you have FreeType without native TrueType hinting  
>> option.
>> You'd need to build FreeType with native TrueType hinting enabled  
>> to get
>> the same results as on Windows.
>>
>> A.
>>
>>
>>> Hi,
>>>
>>> I'm using PIL to dynamically create graphical text headers for my
>> website,
>>> using a truetype font. Testing this at home on my Windows box works
>> fine.
>>> When I upload it to the Linux server, the fonts appear subtly  
>>> different
>> -
>>> the size of the overall image isn't quite right, and the text  
>>> appears
>>> either squashed or spaced wrongly.
>>>
>>> Here's the relevant code:
>>>
>>>     imf = ImageFont.truetype(fontfile, int(fontsize))
>>>     size = imf.getsize(header)
>>>     im = Image.new("RGB", size, "white")
>>>     draw = ImageDraw.Draw(im)
>>>     draw.text((0, 0), header, font=imf, fill=colour)
>>>
>>> With fontfile and fontsize set to the relevant values, and using  
>>> sample
>>> text "Randomtext", this produces an image of size 227x44 on  
>>> Windows and
>>> 229x44 on Linux - doesn't sound like much, but the difference is  
>>> clearly
>>> noticeable (and the designer will kill me). Both machines are  
>>> running
>>> Python 2.4.2 and PIL 1.1.5.
>>>
>>> Any ideas, anyone?
>>>
>>> --
>>> DR.
>>>
>>> _______________________________________________
>>> Image-SIG maillist  -  Image-SIG at python.org
>>> http://mail.python.org/mailman/listinfo/image-sig
>>>
>
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