Bug 128632 – GIF animations should be suspended when outside of viewport

• Component: Layout and Rendering
• Status: RESOLVED FIXED

[Antti Koivisto]

Animations are driven by the paint cycle. Speculative tiles keep animations outside the actual viewport going.

[Antti Koivisto]

<rdar://problem/15895090>

[Antti Koivisto]

Created attachment 223923 [details]
patch

[WebKit Commit Bot]

Attachment 223923 [details] did not pass style-queue:


ERROR: Source/WebCore/rendering/RenderView.cpp:1181:  Extra space after ( in function call  [whitespace/parens] [4]
Total errors found: 1 in 13 files


If any of these errors are false positives, please file a bug against check-webkit-style.

[Andreas Kling]

Comment on attachment 223923 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=223923&action=review

r=me

> Source/WebCore/page/Page.cpp:1149
> +        if (frame->contentRenderer())
> +            frame->contentRenderer()->resumePausedImageAnimationsIfNeeded();

I'd put the renderer in a local.

> Source/WebCore/rendering/RenderElement.cpp:1287
> +    if (document.view()->isOffscreen())
> +        return false;

renderer.frameView().isOffscreen()

> Source/WebCore/rendering/RenderElement.cpp:1290
> +    if (document.frame()->timersPaused())
> +        return false;

renderer.frame().timersPaused()

> Source/WebCore/rendering/RenderElement.cpp:1304
> +    auto visibleRect = document().view()->visibleContentRect();

frameView().visibleContentRect()

> Source/WebCore/rendering/RenderElement.h:206
> +    virtual void newImageAnimationFrameAvailable(CachedImage&) override;

This should be final, too!

> Source/WebCore/rendering/RenderView.cpp:1181
> +void RenderView::addRendererWithPausedImageAnimations( RenderElement& renderer)

Weird space here!

> Source/WebCore/rendering/RenderView.cpp:1203
> +    Vector<RenderElement*> toRemove;

I'd give this some token inline capacity.

[Antti Koivisto]

http://trac.webkit.org/changeset/163928

[Simon Fraser (smfr)]

Comment on attachment 223923 [details]
patch

View in context: https://bugs.webkit.org/attachment.cgi?id=223923&action=review

> Source/WebCore/rendering/RenderElement.cpp:1296
> +    if (!visibleRect.intersects(renderer.absoluteBoundingBoxRect()))

Sad that you have to call renderer.absoluteBoundingBoxRect() here; that walks up the tree!

> LayoutTests/ChangeLog:9
> +        * fast/repaint/no-animation-outside-viewport.html: Added.

Doesn't this need to be a tiled drawing test?

[Antti Koivisto]

(In reply to comment #6)
> Sad that you have to call renderer.absoluteBoundingBoxRect() here; that walks up the tree!

Kinda unavoidable.

> Doesn't this need to be a tiled drawing test?

The test works as expected in wk2. I don't know what is tiled drawing test.

[Simon Fraser (smfr)]

I guess all WK2 tests are in tiled drawing mode now. That used to not be the case (which is why some tests live in LayoutTests/platform/mac-wk2/tiled-drawing/).

[Said Abou-Hallawa]

*** Bug 112327 has been marked as a duplicate of this bug. ***