Re: [ft] FreeType Metrics Question

[vern adams]

You mean you want identical line spacing across different browsers and across 
different operating systems? And you are not getting that?
-v

On 4 Aug 2012, at 05:12, Andreas Sandberg <address@hidden> wrote:

> Greetings List,
> 
>         I'm very new to font rendering and any type of graphics manipulation 
> so I apologize in advance if this question is somewhat juvenile.  I'm 
> developing a web application and noticed that the rendering that is happening 
> for certain fonts in chrome is very different than how some proprietary 
> layout tools are rendering the same font.  This causes an issue for me as I'm 
> trying to get the rendering to be somewhat identical.  I've been trying to 
> use the free type library to pull out some metrics to see if I could figure 
> out what the rendering engines are doing differently and if I could account 
> for this difference.  What I'm seeing is that for some fonts, and for this 
> example specifically Patua-one, there appears to be a lot of white space from 
> the top of the text within a glyph to the top of the bounding box (vertical 
> spae).  In layman's terms, there is a lot of white space in this font and 
> that's the way it's been designed I suppose.  However, it appears some 
> programs will remove this extra space when rendering the font but others 
> dont.  So, I suppose my question boils down to, is there a way to determine 
> how much white space is present and/or are there specific font metrics that 
> specify this?  I've read through the online docs and have played with the api 
> but was unable to find anything.  So my next approach was then to render a 
> character using the gd library and see if I could detect the pixel width 
> based on color.  Unfortunately it looks like the gd library that php is using 
> is removing this padding and therefore my calculations are off.  Appreciate 
> any help in this matter  Thanks very much, here is a simple text drawing of 
> the space I'm trying to describe:
> 
> 
> A  (space)
> |    (space)
> |    (space)
> |     *
> |     *
> |     *
> B    *
> 
> where b is the baseline, a the accent, and the *'s represent the actual 
> glyph.  
> 
> 
> Andreas
> 
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