Bug 121137 - REGRESSION (143483): overflow:hidden doesn't quash big repaints from text-indent: -9999px
Summary: REGRESSION (143483): overflow:hidden doesn't quash big repaints from text-ind...
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Simon Fraser (smfr)
Keywords: InRadar
Depends on:
Reported: 2013-09-10 17:57 PDT by Simon Fraser (smfr)
Modified: 2013-09-11 11:32 PDT (History)
7 users (show)

See Also:

Testcase (843 bytes, text/html)
2013-09-10 17:57 PDT, Simon Fraser (smfr)
no flags Details
Patch (4.78 KB, patch)
2013-09-10 18:25 PDT, Simon Fraser (smfr)
rniwa: review+
Details | Formatted Diff | Diff

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Description Simon Fraser (smfr) 2013-09-10 17:57:04 PDT
Load the attachment in Minibrowser (WK1), launch QuartzDebug, and turn on "Flash screen updates". Now hover over the gradient bit. Note how the repaint extents outside the left of the box.

The box has overflow:hidden, so why is the repaint so big?

This kills our advice to combine text-indent: -9999px with overflow:hidden
Comment 1 Simon Fraser (smfr) 2013-09-10 17:57:19 PDT
Created attachment 211271 [details]
Comment 2 Simon Fraser (smfr) 2013-09-10 18:25:39 PDT
Created attachment 211273 [details]
Comment 3 Simon Fraser (smfr) 2013-09-10 18:28:53 PDT
Comment 4 Ryosuke Niwa 2013-09-10 18:40:08 PDT
Maybe http://trac.webkit.org/changeset/143313 fixed the original bug?
Comment 5 Simon Fraser (smfr) 2013-09-11 11:32:31 PDT