360148 - Support the 'z-index' property on SVG elements

Status: NEW

(Core :: SVG, defect, P3)

Description

[Jesse Costello-Good]

User-Agent:       Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0
Build Identifier: Mozilla/5.0 (Macintosh; U; Intel Mac OS X; en-US; rv:1.8.1) Gecko/20061010 Firefox/2.0

Currently, Firefox's SVG implementation does not honor the z-index CSS style property. Ideally, the property would be honored. The current work around is to rely solely on DOM order. The z-index style property is a much more convenient way to control Z index.

Reproducible: Always

Steps to Reproduce:
See the attached file.
Actual Results:  
The blue square is on top.

Expected Results:  
The red square is on top.

Comment 1

[Jesse Costello-Good]

Attachment: Test file, demonstrates z-index style CSS property in SVG rect

Comment 2

[Jonathan Watt [:jwatt]]

This is invalid. SVG is designed to based on DOM order. See discussions on the www-svg mailing list.

Comment 3

[Robert Longson [:longsonr]]

duplicate of bug 342409 I believe.

Comment 4

[Debbie Mitchell]

The z-index works in all other browsers: http://www.digdif.com/
When you mouse over the expanding navigation on the left the z-index should place the flash behind the navigation that expands.  

Comment 5

[Robert Longson [:longsonr]]

See also http://www.w3.org/TR/SVG/render.html#RenderingOrder

Comment 6

[Jonathan Watt [:jwatt]]

Actually the following proposal got a good reception in the SVG Working Group, so we may well implement it:

http://lists.w3.org/Archives/Public/www-svg/2009Oct/0042.html

Comment 7

[u459114]

I do not see any browser support it

Comment 8

[yisibl]

Spec: https://www.w3.org/TR/SVG2/render.html#ZIndexProperty

Comment 9

[yisibl]

We should open a meta bug: [meta] Implement SVG2 features

Comment 10

[Astley Chen (inactive)]

(In reply to percyley from comment #9)
> We should open a meta bug: [meta] Implement SVG2 features

Agree. Will do.

Jonathan, would you consider to implement this ? otherwise, I'll reset to assignee first.