[whatwg] are relative values of CanvasRenderingContext2D.font live to style changes?
ian at hixie.ch
Fri Jun 13 02:09:33 PDT 2008
On Thu, 12 Jun 2008, L. David Baron wrote:
> I'm looking at
> which currently says:
> # When the 'font-size' component is set to lengths using
> # percentages, 'em' or 'ex' units, or the 'larger' or 'smaller'
> # keywords, these must be interpreted relative to the computed
> # value of the 'font-size' property of the corresponding canvas
> # element. When the 'font-weight' component is set to the relative
> # values 'bolder' and 'lighter', these must be interpreted
> # relative to the computed value of the 'font-weight' property of
> # the corresponding canvas element. If the computed values are
> # undefined for a particular case (e.g. because the canvas element
> # is not in a document), then the relative keywords must be
> # interpreted relative to the normal-weight 10px sans-serif
> # default.
> Suppose that the computed style of the corresponding canvas element
> changes between when the font DOM attribute is set and text is
> drawn. Based on the text above, it's not clear to me whether values
> like '1em' or 'lighter' should be relative to the canvas's values at
> the time the font is set or the time the text is drawn.
> I'd prefer if it were static, because for Mozilla, we'd either have to
> add new infrastructure to handle dynamic style changes for elements
> inside something that's display:none or we'd have to recompute the style
> for every text operation (probably the latter).
It is now explicitly static. (Also changed for 'currentColor'.)
Ian Hickson U+1047E )\._.,--....,'``. fL
http://ln.hixie.ch/ U+263A /, _.. \ _\ ;`._ ,.
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