Cyril Murzin wrote:
> Would someone be so kind to explain it? I've read: "If one or more
> measurements are not available for a font, then the appropriate
> fields in the ATSFontMetrics data structure are set to 0." How is
> it possible for ascent or descent values?
There are two font metrics getters: ATSFontGetHorizontalMetrics
and ATSFontGetVerticalMetrics. That implies that we have two sets
of ascent/descent values -- horizontal and vertical.
And it appears that the 'vertical' ascent/descent values are not
usual ascent/descent that many of us are familar with:
* ATSFontGetVerticalMetrics + Osaka font
* ATSFontGetHorizontalMetrics + Osaka font
* GetFontInfo + Osaka 12
My /guess/ is that the vertical variants are used (in a way
I do not know) when the lines of text are rendered
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