[Webkit-unassigned] [Bug 8100] New: REGRESSION (NativeTextField): Right-aligned and RTL text jitters in new text fields

[bugzilla-daemon at opendarwin.org]

http://bugzilla.opendarwin.org/show_bug.cgi?id=8100

           Summary: REGRESSION (NativeTextField): Right-aligned and RTL text
                    jitters in new text fields
           Product: WebKit
           Version: 420+ (nightly)
          Platform: Macintosh
        OS/Version: Mac OS X 10.4
            Status: NEW
          Keywords: Regression, NativeTextField
          Severity: normal
          Priority: P1
         Component: HTML Forms
        AssignedTo: webkit-unassigned at opendarwin.org
        ReportedBy: opendarwin.org at mitzpettel.com


Summary: glyphs' horizontal positions slightly change as more text is entered
into a right-aligned or RTL text field.

To reproduce:
1) Open the attached test case.
2) In the first text field, type lower-case "x"s. Watch the glyphs' positions
as you add more "x"s.
3) In the second text field, type (or paste) Alephs. Watch the position of the
last-typed Aleph as you type the next one.
4) From the Debug menu, choose Use ATSU For All Text, reload and repeat (in
step 3, watch all Alephs).

I think these are artifacts of the "rounding hack". They can be observed in
Mail too (and in other editable or dynamic HTML).

The right-aligned case is somewhat artificial, but the RTL case is a real
problem.


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