[Webkit-unassigned] [Bug 42653] IntSize / FloatSize: add invalid() and isValid() helper methods

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=42653





--- Comment #2 from Darin Adler <darin at apple.com>  2010-07-20 11:12:03 PST ---
This use of -1,-1 as a magic value seems questionable to me, even though Qt uses it.

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