1440961 - Canvas in ShadowDOM could probably interact better.

Status: RESOLVED FIXED

(Core :: DOM: Core & HTML, enhancement)

Description

[Emilio Cobos Álvarez (:emilio)]

.

Comment 1

[Emilio Cobos Álvarez (:emilio)]

Attachment: Bug 1440961: Make canvas style-related code interact a bit better with Shadow DOM.

The only relevant spec reference unfortunately is for color parsing[1], which
mentions:

> Otherwise, set color to the computed value of the 'color' property of element.

Using IsInComposedDoc there should be fine, since the computed style of an
element is well defined there.

The rest look like implementation limitations, for which should not be an issue
to extend the check for the composed doc.

[1]: https://html.spec.whatwg.org/#parsed-as-a-css-color-value

Review commit: https://reviewboard.mozilla.org/r/222992/diff/#index_header
See other reviews: https://reviewboard.mozilla.org/r/222992/

Comment 2

[Olli Pettay [:smaug][[e-mail]]]

Comment on attachment 8953794 [details]
Bug 1440961: Make canvas style-related code interact a bit better with Shadow DOM.

https://reviewboard.mozilla.org/r/222992/#review228868

Comment 3

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/89872bb30e1e
Make canvas style-related code interact a bit better with Shadow DOM. r=smaug

Comment 4

[Eliza Balazs [:ebalazs_]]

https://hg.mozilla.org/mozilla-central/rev/89872bb30e1e