Re: default viewport size of SVG resource documents

> On Mar 12, 2015, at 7:08 AM, Cameron McCormack <> wrote:
> Is it defined what the default size of an SVG resource document is?  I
> don’t think it is, and we probably should define it.
> I am not sure whether it is possible to write content that depends on
> this size in regular SVG documents (if you think of a way, let me
> know!), but I think it is possible with SVG glyphs in OpenType.  For
> example, if the font document is:
>  <svg xmlns="">
>    <rect glyphid="1" width="100%" height="20"/>
>  </svg>
> this would define a glyph consisting of a rectangle that hangs just
> below the baseline at a height of 20 units-per-em.  It’s not clear what
> the 100% would resolve against, though.  In a regular SVG document that
> is being presented in some viewport then that viewport size will
> determine the viewBox automatically.
> For font documents, I think it could make sense to define the viewport
> as a square whose width and height are the units-per-em value from the
> font’s head table.  More sense than any other values, probably.

Is this question specific to font documents? Or do you think even for standalone documents this is not specified enough?


> -- 
> Cameron McCormack ≝


Received on Thursday, 12 March 2015 06:53:34 UTC