[Webkit-unassigned] [Bug 33876] New: [Qt] Shortcut for Font::floatWidthForComplexText

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=33876

           Summary: [Qt] Shortcut for Font::floatWidthForComplexText
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: WebKit Qt
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zecke at selfish.org


For text which only consists of one charachter we can avoid using harfbuzz and
try QFontMetrics::width instead. In the case of loading google.com/news
(english version) 23% of all calls to the floatWidthForComplexText is from a
space. It is also true for other sites with less links.

I'm currently doing a reduction and looking into the possible performance gain.

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