[Webkit-unassigned] [Bug 150464] [WinCairo] Improve test results for fast layouttests.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=150464

--- Comment #12 from peavo at outlook.com ---
(In reply to comment #11)
> Doesn't applying the mac ascent adjustment on WinCairo make WinCairo layout
> text more similar to the AppleWin port?  Ideally the two ports would lay
> everything out the same.

I believe it makes it more different :) As I have understood it, the Mac adjustment hack is applied to make the Mac font metrics more similar to certain Windows font metrics (Times, for example), because some Windows font metrics had become a de facto standard on the web. When getting font metrics on Windows with the native API, we already have the "correct" metrics, and there is no need to apply the Mac ascent adjustment, except for AppleWin, which is using CoreGraphics, and thereby behaving in the same way as Mac. Debugging also shows that if we apply the ascent adjustment, the layout elements are too big compared to what is expected.

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