[Webkit-unassigned] [Bug 94874] New: [mac] REGRESSION (r122215): Animated GIF outside the viewport doesn't play when scrolled into view

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=94874

           Summary: [mac] REGRESSION (r122215): Animated GIF outside the
                    viewport doesn't play when scrolled into view
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: InRadar
          Severity: Normal
          Priority: P2
         Component: Images
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: timothy_horton at apple.com
                CC: adele at apple.com, bdakin at apple.com, koivisto at iki.fi,
                    simon.fraser at apple.com, skyul at company100.net,
                    luxtella at company100.net


Steps to Reproduce:

1. On Mountain Lion, with the Mac port (where tiled scrolling is enabled):
2. With a relatively small window:
3. Load http://whenapthuntinginsf.tumblr.com.
4. Scroll down.

Expected: All of the GIFs animate.

Actual: The GIFs which are scrolled into view do not animate.

This is probably due to the fact that they are offscreen (on offscreen tiles) when they are first painted, so they don't animate. Then, when they are scrolled into view, they don't need to repaint, so they don't realize they should start animating.

This will probably require some special logic in the tiled scrolling case.

<rdar://problem/12067641>

-- 
Configure bugmail: https://bugs.webkit.org/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are the assignee for the bug.