1439781 - [wpt-sync] Sync PR 9174 - [css-typed-om] WIP: Make custom paint canvas work with <gradient>s.

Status: NEW

(Core :: Web Painting, enhancement, P3)

Description

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Sync web-platform-tests PR 9174 into mozilla-central (this bug is closed when the sync is complete).

PR: https://github.com/w3c/web-platform-tests/pull/9174
Details from upstream follow.

Darren Shen wrote:
>  [css-typed-om] WIP: Make custom paint canvas work with <gradient>s.
>  
>  Currently the custom paint canvas cannot draw CSSImageValues
>  representing <gradient>s. The main difficulty is that <gradient>s may
>  specify relative lengths / colors that need to be resolved using a
>  ComputedStyle.
>  
>  To implement this, we create a new subclass CSSStyleGradientValue. When
>  a CSSStyleGradientValue is created from a custom paint styleMap, we pass
>  in the Node that the paint callback corresponds to. When we need to
>  generate an image, we use the Node to resolve any lengths / colors.
>  
>  Bug: 803680
>  Change-Id: I15994c7b87015731547da581720f42d29384426b
>  Reviewed-on: https://chromium-review.googlesource.com/882906
>  WPT-Export-Revision: 94d342402aea84c13fe192115073262d3fa43c68
>  
>  
>

Comment 1

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try https://treeherder.mozilla.org/#/jobs?repo=try&revision=0a4fc4344341aa757a2b202e34a3e89c81ed034b

Comment 2

[Web Platform Test Sync Bot [:wpt-sync] (Matrix: #interop:mozilla.org)]

Pushed to try (stability) https://treeherder.mozilla.org/#/jobs?repo=try&revision=b4ee047e79559550ab0682e599c021608e326b0b