[Webkit-unassigned] [Bug 55740] New: CSS3 multi column layout doesn't work as expected with min-height

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=55740

           Summary: CSS3 multi column layout doesn't work as expected with
                    min-height
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
               URL: http://crbug.com/65731
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: CSS
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: bashi at chromium.org
                CC: hyatt at apple.com, hamaji at chromium.org


For details, see http://crbug.com/65731

I've investigated briefly this problem. The cause is in RenderBlock::layoutBlock(). If the RenderBlock has multi column, it computes columnHeight by using computeLogicalHeight() beforehand the actual layout. When the block has min-height property, the columnHeight set to its value even if the height should be more larger because there is no computed height at that moment.

It seems to me that we can't determine the column height at that point, but I'm not sure because I'm not familiar with layout/rendering well.

Could anyone give me advice how to cope with this problem?

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