Bug 116744 – Animated GIFs don't repaint after TCADA un-suspends painting

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Tim Horton]

<rdar://problem/13973514>

[Tim Horton]

Created attachment 202861 [details]
patch

[Simon Fraser (smfr)]

Comment on attachment 202861 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=202861&action=review

> Source/WebCore/ChangeLog:3
> +        Animated GIFs don't repaint after TCADA un-suspends painting

TCADA wut?

> Source/WebKit2/WebProcess/WebPage/mac/TiledCoreAnimationDrawingArea.mm:391
> +    if (m_webPage->windowIsVisible()) {
>          m_webPage->corePage()->resumeScriptedAnimations();
> +        m_webPage->corePage()->mainFrame()->view()->resumeAnimatingImages();
> +    }

Weird that this is in WK2 code. Are all of m_webPage->corePage()->mainFrame()->view() always non-null?

[Tim Horton]

(In reply to comment #2)
> (From update of attachment 202861 [details])
> View in context: https://bugs.webkit.org/attachment.cgi?id=202861&action=review
> 
> > Source/WebCore/ChangeLog:3
> > +        Animated GIFs don't repaint after TCADA un-suspends painting
> 
> TCADA wut?

I'll fix that.

> > Source/WebKit2/WebProcess/WebPage/mac/TiledCoreAnimationDrawingArea.mm:391
> > +    if (m_webPage->windowIsVisible()) {
> >          m_webPage->corePage()->resumeScriptedAnimations();
> > +        m_webPage->corePage()->mainFrame()->view()->resumeAnimatingImages();
> > +    }
> 
> Weird that this is in WK2 code.

A little, but no weirder than resumeScriptedAnimations.

> Are all of m_webPage->corePage()->mainFrame()->view() always non-null?

flushLayers depends on all of them being non-null as well, but other code null-checks frame and frameView. I'm never sure. I don't see any clear guarantee that frame or its view are non-null, so I'll check them.

[Tim Horton]

https://trac.webkit.org/r150666