- From: Tab Atkins Jr. <jackalmage@gmail.com>
- Date: Fri, 20 Sep 2013 10:19:48 -0700
- To: "Robert O'Callahan" <robert@ocallahan.org>
- Cc: www-style <www-style@w3.org>
On Thu, Sep 19, 2013 at 10:55 PM, Robert O'Callahan <robert@ocallahan.org> wrote: > What should getBoxQuads() on a table element return? Obvious options: > 1) a quad for the "inner table box" (the box with the rows and columns, > which has the table border on it) > 2) a quad for the "outer table box" (the box enclosing the inner table box > and any caption box, which has the table margins on it) > 3) a quad for the "inner table box" and a quad for the caption box > > For the analogous question with getClientRects(), Gecko currently does #3, > which is explicitly mandated as a special case in the CSSOM Views spec: > http://dev.w3.org/csswg/cssom-view/#dom-element-getclientrects > I think the rationale is that we want getBoundingClientRect() on a table to > include the caption area, but option #2 (which is what Chrome > getClientRects() does) doesn't match the box where the border is drawn and > doesn't give you a way to get the inner table box geometry). > > In a way, the most logical thing to do for getBoxQuads would be to use the > inner table box for "content", "padding" and "border" boxes and use the > outer table box for "margin" boxes and ignore the caption altogether, but > that could still confuse authors. I'm not sure what to do, other than curse > tables. I say cursing tables is the best idea. But yeah, your choice seems reasonable here. Having border-box return something other than the box that the border surrounds would be super-confusing and bad. Having margin-box return something other than the extent of the margins would be super-confusing and bad. Having the two differ by more than just the size of the margins is also confusing and bad, but less so I think - it makes the feature less consistent between results, but keeps each individual call consistent. > Smaller issues: Should DOMPoint/DOMRect/DOMQuad constructors/attributes > allow unrestricted doubles? I think probably not. I think not. > What about list bullets: should they contribute quads to getQuadList? I > think anonymous decorations like list bullets probably should not. No, list bullets come from the child ::marker pseudos. They're not part of the list-item itself. ~TJ
Received on Friday, 20 September 2013 17:20:36 UTC