Bug 104816 - [CSS Regions] Text bounces in regions when resized
Summary: [CSS Regions] Text bounces in regions when resized
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebCore Misc. (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Nobody
Keywords: AdobeTracked
Depends on:
Blocks: 57312
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Reported: 2012-12-12 08:43 PST by Andrei Bucur
Modified: 2013-06-17 01:31 PDT (History)
4 users (show)

See Also:

Test case (3.75 KB, text/html)
2012-12-12 08:43 PST, Andrei Bucur
no flags Details

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Description Andrei Bucur 2012-12-12 08:43:38 PST
Created attachment 179056 [details]
Test case

When resizing a region in the chain, text bounces 1-2 pixels in subsequent regions. See attached test.
Comment 1 Andrei Bucur 2012-12-20 23:16:20 PST
To clarify repro:
1. Slowly resize the window so the middle region gets resized as well
2. Even though the resize delta is too small to have text swap regions, the content in the rightmost region bounces vertically with one or two pixels.
Comment 2 Michelangelo De Simone 2013-06-13 11:55:27 PDT
Works for me on today's nightly (r151543)
Comment 3 Mihai Balan 2013-06-14 05:37:03 PDT
I'd rather have Andrei take another look at it before deciding it got fixed. He's the one that logged the bug and might have more info on it.
Comment 4 Mihai Balan 2013-06-17 01:31:19 PDT
The problem is caused by sub-pixel layout (still reproduces in Canary) and as long as the sub-pixel layout code is still in WebKit (even if it's disabled in the Mac port), the bug should still be open.