[Webkit-unassigned] [Bug 141431] New: [CSS Grid Layout] Support marking/unmarking tracks as infinitely growable

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=141431

            Bug ID: 141431
           Summary: [CSS Grid Layout] Support marking/unmarking tracks as
                    infinitely growable
    Classification: Unclassified
           Product: WebKit
           Version: 528+ (Nightly build)
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: CSS
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: svillar at igalia.com

As explained here http://lists.w3.org/Archives/Public/www-style/2014Mar/0512.html we sometimes need to consider that some tracks are infinitely growable when they are really not, in order to produce better results.

One example is this case:

* Two "auto" tracks (i.e. "minmax(min-content, max-content) minmax(min-content, max-content)")
* Item 1 is in track 1, and has min-content = max-content = 10.
* Item 2 spans tracks 1 and 2, and has min-content = 30, max-content = 100.

Our current implementation will outcome [45px, 55px]. But with this change that would be [10, 90] which is considered more "natural" from the algorithm author's POV.

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