[Webkit-unassigned] [Bug 47254] New: Only execute first SVG text layout phase if needed

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=47254

           Summary: Only execute first SVG text layout phase if needed
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: SVG
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zimmermann at kde.org
                CC: zimmermann at kde.org, mdelaney at apple.com


Only if x/y/dx/dy/rotate values change or the style of a RenderSVGInlineText rendere, or the text content itself, the first layout phase needs to be executed from RenderSVGText::layout().
It's currently done on every layout, wasting time.

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