[Webkit-unassigned] [Bug 172058] New: Simple line layout and the inline tree return different Range client rects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=172058

            Bug ID: 172058
           Summary: Simple line layout and the inline tree return
                    different Range client rects
           Product: WebKit
           Version: WebKit Local Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Text
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: simon.fraser at apple.com
                CC: mmaxfield at apple.com

LayoutTests/fast/dom/Range/simple-line-layout-getclientrects-expected.html detected a case where simple line layout and the inline tree returned different client rects for a range.

simple line layout does not round the rects, but InlineTextBox::localSelectionRect() does snapping of the selection rects, resulting in integral rects.

This means that simple line layout is detectable from web content.

I will modify the test to work around this problem in bug 172057.

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