[Webkit-unassigned] [Bug 37016] New: WebHTMLView.firstRectForCharacterRange returns wrong y for line beginning of multiline <pre>

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=37016

           Summary: WebHTMLView.firstRectForCharacterRange returns wrong y
                    for line beginning of multiline <pre>
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: PC
        OS/Version: Mac OS X 10.5
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P3
         Component: WebKit API
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: morrita at google.com


Created an attachment (id=52394)
 --> (https://bugs.webkit.org/attachment.cgi?id=52394)
reproduce (for DRT)

WebHTMLView.firstRectForCharacterRange returns NSRect with wrong y value.
To reproduce, run attached file on DRT, that will results following text: 
You can see a pump "y:600" on y value at the beginning of the line.

----
Ignore me; this block is just a place holder to make the test result
significant.
ABC
DEF
abc
def

2
i:0
x:16 y:364
x:24 y:364
x:32 y:364
x:8 y:349
x:16 y:349
x:24 y:349
x:32 y:349
i:1
x:16 y:321
x:24 y:321
x:32 y:321
x:0 y:600
x:16 y:306
x:24 y:306
x:32 y:306
----

This problem is observable only from WebKit API, and not visible from DOM.
The test case uses textInputController.firstRectForCharacterRange() to reveal
it.

The expectation for LayoutTest/editing/selection/move-left-right.html is also
suffered by this problem,
although its difference is minor issue for that  test case.

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