919900 - SVG: Wrong BBox if an empty text element is contained with svg.text.css-frames.enabled

Status: VERIFIED FIXED

(Core :: SVG, defect)

Description

[Willi]

Attachment: bbox.html

User Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_8_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/29.0.1547.76 Safari/537.36

Steps to reproduce:

When I call getBBox() of a SVG element where an empty text element is contained, the returned rectangle seems to be wrong. 


Actual results:

As a result I got always a rectangle with the x/y values of the origin (0,0).


Expected results:

I assume that an empty text element is not used for the calculation of the bounding box. In my attached examples, there a two groups, one without an empty text element and one with one. For me, both bounding boxes should be the same (100/100 x/y and 100/100 width/height), but they aren't.

Comment 1

[Loic]

Broken since implementation of bug 655877 and svg.text.css-frames.enabled set to true by default (bug 839955).

Comment 2

[Robert Longson [:longsonr]]

Attachment: patch

Comment 3

[Robert Longson [:longsonr]]

BTW thanks for reporting this Willi, it's always good to find these things out during beta/aurora.

Comment 4

[Cameron McCormack (:heycam)]

Comment on attachment 809198 [details] [diff] [review]
patch

Review of attachment 809198 [details] [diff] [review]:
-----------------------------------------------------------------

Looks good.  Could you add another test that exercises a case like:

  <g>
    <text/>
    <rect .../>
  </g>

g.getBBox()

Comment 5

[Robert Longson [:longsonr]]

https://tbpl.mozilla.org/?tree=Try&rev=4a809962e84f

Comment 6

[Robert Longson [:longsonr]]

Attachment: patch for checkin with review comments addressed

Comment 7

[Robert Longson [:longsonr]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/e97818c39f6f

Comment 8

[Robert Longson [:longsonr]]

https://hg.mozilla.org/integration/mozilla-inbound/rev/91a3ab6c0d0a

The letter t is different but it's undetectable to the human eye.

Comment 9

[Robert Longson [:longsonr]]

And it's on all Windows 7 *sigh*

https://hg.mozilla.org/integration/mozilla-inbound/rev/6a99a44e4b18

Comment 10

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/mozilla-central/rev/e97818c39f6f
https://hg.mozilla.org/mozilla-central/rev/91a3ab6c0d0a
https://hg.mozilla.org/mozilla-central/rev/6a99a44e4b18

Comment 11

[Robert Longson [:longsonr]]

Attachment: rollup patch for aurora/beta

[Approval Request Comment]
Bug caused by (feature/regressing bug #): bug 839955
User impact if declined: bounding boxes of SVG text may be calculated incorrectly. The area covered may also be calculated incorrectly leading to a greater area than necessary being repainted.
Testing completed (on m-c, etc.): landed on m-c with tests
Risk to taking this patch (and alternatives if risky): could back out bug 839955 and not take the rewritten SVG text support but we'd lose all the new features like underlining and various bug fixes that CSS text frames brings.
String or IDL/UUID changes made by this patch: none.

Comment 12

[Alex Keybl [:akeybl]]

Comment on attachment 811672 [details] [diff] [review]
rollup patch for aurora/beta

In support of keeping the new functionality enabled in Beta 25.

Comment 13

[Ryan VanderMeulen [:RyanVM]]

https://hg.mozilla.org/releases/mozilla-aurora/rev/f75dbfe92bcc
https://hg.mozilla.org/releases/mozilla-beta/rev/c877ffbbef91

Comment 14

[Petruta Horea [:phorea], Desktop Test Engineering (back on Sep 5th)]

Fx 25 beta 9: 20131017174213
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:25.0) Gecko/20100101 Firefox/25.0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:25.0) Gecko/20100101 Firefox/25.0

latest Aurora: 20131017004002
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:26.0) Gecko/20100101 Firefox/26.0
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:26.0) Gecko/20100101 Firefox/26.0

Verified the issue on Firefox 25 beta 9 and latest Aurora using the attached testcase on both 32-bit and 64-bit mode.
Each time the results are:
BBox 1 (w/o text):
100, 100, 100, 100
BBox 2 (with text):
100, 100, 100, 100

Comment 15

[Tracy Walker [:tracy]]

verified with Nightly build 20131024030204