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Date: Fri, 07 Sep 2012 07:51:59 +0100
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Subject: Re: [PHP-DEV] is GD being actively maintained?
From: lester@lsces.co.uk (Lester Caine)

Rasmus Schultz wrote:
> Thank you - this confirms I'm not crazy, or at least it's evidence to
> support that theory;-)
>
> It may be OS specific - perhaps the Windows and OSX binaries are built
> against a different build (or configuration) of FreeType?

Rasmus
Something that is also worth bearing in mind is that even in native 
applications, fonts behave a little strange at times. Certainly in windows we 
used to have fun between different versions of windows rendering text in 
slightly different sizes, and today I have to ask some customers to change fonts 
where they have picked up some nice new fancy one, but on Linux it wraps at 
different places to Windows or Mac. I certainly remember having to 'adjust' box 
sizes on native applications so that the W98 app displayed the same on W2k.

While it would be nice to accurately render a pdf document to a printer, there 
is no accurate base to a browser window so we live with things being a little 
random when rendered, and often a browser will 'scale' fonts differently when 
you zoom them. So personally I just live with the fact that infrastructure is 
not as good as perhaps we would like?

It IS some time since I bothered looking at similar problems myself - probably 
1990's :) - but I think I'm right in saying that 'italic' is handled in a couple 
of different ways? One provides a separate rendering of the italic font, while 
the other simply allows the perpendicular font to be rendered at a variable 
angle. Looking at the 'faulty' image I would suspect that the metrics are for 
the perpendicular case, push the characters back to vertical and they will drop 
back in the box. At least if I was going to look at the problem, that is were I 
would start ... I doubt that this is purely a PHP bug though?

-- 
Lester Caine - G8HFL
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