Bug 27042 – Incomplete painting of newly created floats

• Component: Layout and Rendering
• Status: RESOLVED FIXED

<rdar://problem/7010981>

Floats of a newly created block can fail to paint correctly if the block’s initial position is not (0, 0) in the parent’s coordinate system. A newly created float that ends up at (0, 0) in its parent’s coordinate system can fail to paint correctly. While these are distinct issues, I discovered one while working on the other so I have a single patch for both, with two separate test cases. Patch forthcoming.

Created attachment 32393 [details]
Patch, including repaint tests

[Simon Fraser (smfr)]

Comment on attachment 32393 [details]
Patch, including repaint tests

> +        for (size_t i = 0; i < floatCount; ++i) {
> +            if (!floats[i].everHadLayout) {
> +                RenderBox* f = floats[i].object;
> +                if (!f->x() && !f->y() && f->checkForRepaintDuringLayout())

I have a preference for comparing with 0 for coordinates, but r=me

Fixed in <http://trac.webkit.org/changeset/45608>.