[cairo] Font metrics under font transformations

[Maarten Breddels]

yup, I vote for vectors solution too, just makes life easier i guess.

Alex Dubov wrote:

>While I'm only an end user, I would like to vote for
>the last option. Spare info never hurts, especially
>when it can be encapsulated inside some object or
>something.
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>>The third option is to return vectors for all of
>>these values.  This will 
>>complicated usage of these values in the 'normal'
>>cases, but will 
>>otherwise work just fine.  Note that 'max_x_advance'
>>and 'max_y_advance' 
>>will *also* be vectors as they point along the font
>>space baseline.
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>>
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