1388622 - svg mask rendering should respect box-decoration-break

Status: NEW

(Core :: Web Painting, enhancement, P2)

Description

[Louis Chang [:louis]]

Attachment: box-decoration-break_with_svg_mask.html

+++ This bug was initially created as a clone of Bug #1319406 +++

According to CSS Fragmentation Module Level 3:
https://drafts.csswg.org/css-break/#break-decoration

When a break (page/column/region/line) splits a box, the box-decoration-break property controls
* how the background positioning area [CSS3BG] (and mask positioning area [CSS-MASKING-1], shape reference box [CSS-SHAPES-1], etc.) is derived from or duplicated across the box fragments and how the element’s background is drawn within them. 

Depend on the value of box-decoration-break, we should generate the shape of svg mask differently. Currently, we always treat box-decoration-break as clone.

Comment 1

[BugBot [:suhaib / :marco/ :calixte]]

The bug assignee didn't login in Bugzilla in the last 7 months.
:miko, could you have a look please?
For more information, please visit auto_nag documentation.

Comment 2

[Miko Mynttinen]

Attachment: ss.png

Comment 3

[Miko Mynttinen]

Still looks very different compared to Chrome and Safari.