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Re: [ft] Incorrect text spacing.
From: |
Werner LEMBERG |
Subject: |
Re: [ft] Incorrect text spacing. |
Date: |
Tue, 02 Jun 2009 21:06:52 +0200 (CEST) |
> [...] all text appears to be improperly spaced. The line spacing is
> too large. Upon examination the ascent and descent font metrics
> appear to be ~50% too large.
Example values, please, with a real font.
> I grew up with the understanding that ascent
> was typically the distance from the base-line to the top
> of the lower case 'd' character and the descent
> was typically the distance from the base-line
> to the bottom of the lower case 'y' character.
> You add a little leading and you have the line-spacing.
Read this for a complete understanding of the three different sets of
ascender and descender values in TrueType fonts:
http://typophile.com/node/13081?
> Qt tech-support blames the X11 layers (FontConfig, Truetype etc.)
> for providing incorrect font metrics.
>
> Is this true or are they misinterpreting the numbers?
I don't know.
Werner