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Re: [ft] figuring out where the baseline is


From: Werner LEMBERG
Subject: Re: [ft] figuring out where the baseline is
Date: Wed, 22 Aug 2012 07:34:41 +0200 (CEST)

>> Ah, do you need to render the glyph to get it's bbox?
> 
> Yes/no. I need to know the maximum top/bottom of the bounding box
> for the entire font face.
> 
> That is, I set the height of the font to 32, thus I expect all
> glyphs to fit within a height of 32.

This is a wrong expectation.

> I call Render_Glyph and then access the metrics.  I don't see anyway
> from those metrics that I can determine where in a 32 high box the
> glyph should be placed.

As mentioned many times on this list, the *only* way to get a smallest
bbox for a string of glyphs at a certain resolution is to call
FT_Load_Glyph for each glyph so that hinting instructions get applied.


    Werner



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