[cairo] Font metrics under font transformations

[Carl Worth]

On Tue, 11 Jan 2005 21:22:00 +0100, Maarten Breddels wrote:
>                                                 I would rather see cairo 
> use the bottom left as (0,0), i mean, using the upper left corner is 
> from the days of accessing framebuffers etc :).

In addition to framebuffers, most popular image formats store the data
this way. We can't make both the graphics and font worlds happy
simultaneously here.

> No matter how weird the transformation is, the 'add advance vector' and 
> 'substract height vector' should always work, i think.

Why export an interface that requires the user to use differing signs
for related metrics? That doesn't seem to simplify things in my view.

-Carl
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