Bug 38198 – <symbol> tooltips not displayed

• Status: RESOLVED
• Resolution: WORKSFORME
• Component: SVG

[jay]

iirc 

in every case, where there is a title a tooltip should be raised.
in case of more than one, within an open element only the first is used.

furthermore and in particular, <use> can reference any named svg resource, ie does not require symbol, g or any other specific element.

there is no requirement or expectation that <g>** should be used to enclose titles.

**for the singular case where <g> is used, and a title is raised see:
https://bugs.webkit.org/show_bug.cgi?id=16854

there has been some debate, about hierarchies of titles, but that is not part of this  bug.

please check the specs as this is from my poor memory of 6 years ago, or more....

[Jeff Schiller]

Someone please update the following since the person who raised this did not follow instructions at https://bugs.webkit.org/show_bug.cgi?id=16854#c32

* Please update abstract/title to "Symbol tooltips not being displayed"

* Please clear the "HasReduction" keyword (there is no test case attached)

* Please clear the "EasyFix" keyword since this is not an easy fix

[jay]

Jeff,

this bug does not relate to <symbol> however that is a testcase, and is in the URI given

apologies if this is not an easyfix, hard to guess, as the one fixed evidently was....

[Jeff Schiller]

Jonathan - please submit a reduced test case that demonstrates your problem in WebKit trunk.  Otherwise it is difficult to understand what you feel doesn't work.  As far as I know, the only thing that doesn't work is <symbol>.

Thanks.

[jay]

Jeff,

you intimated that <g> was needed, this is irrational, but doesn't suggest that everything else works,
rather the reverse...

[Jeff Schiller]

Jonathan - please submit a reduced test case that demonstrates your problem.

[jay]

Jeff, the test case is the URI,

your test case for the previous bug was not helpful, as explained, and you failed to indicate  that

<defs>
<line id="sunny" style="stroke-width:17;stroke:#f0f" x1="22" y1="75" x2="139" y2="75"  >
<title>line</title>
</line>
</defs>
<use xlink:href="#sunny" x="33" y="72" />

was fixed, either in the comments, or testcase, 

it's not clear to me why symbol should be treated differently to g, and hence why this is not an easyfix.

[Nikolas Zimmermann]

(In reply to comment #6)
> Jeff, the test case is the URI,
> 
> your test case for the previous bug was not helpful, as explained, and you
> failed to indicate  that

Jay,

this is not a way to talk to hard-working contributors.
The testcase is NOT THE URI. A reduced testcase is needed, as simple as possible.

> <defs>
> <line id="sunny" style="stroke-width:17;stroke:#f0f" x1="22" y1="75" x2="139"
> y2="75"  >
> <title>line</title>
> </line>
> </defs>
> <use xlink:href="#sunny" x="33" y="72" />
> 
> was fixed, either in the comments, or testcase, 

No one has time to look through complex testcases, you should reduce it, and upload it here.

> 
> it's not clear to me why symbol should be treated differently to g, and hence
> why this is not an easyfix.
You have no understanding of our internals, so it's hard for you to judge what is hard to fix and what not. Upload a reduced testcase, and someone will be able to investigate.

[Jeff Schiller]

You might want to read http://webkit.org/quality/reduction.html  The URL you have submitted is not a reduced test case - it is a Wikimedia commons-hosted file for showing weather symbols.  That file has 24 <symbol> elements and 18 <use> elements and no instructions on how to reproduce the problem you see.  Please remove HasReduction keyword if you are able.  

My test case for Bug 16854 https://bug-16854-attachments.webkit.org/attachment.cgi?id=53317 is concise, has instructions and demonstrates a variety of scenarios in which tooltips on SVG elements now work.

As I tried to state at https://bugs.webkit.org/show_bug.cgi?id=16854#c32, the only scenario that doesn't work is when the use references a <symbol> with a <title>.  Thus, I had to rework the Wikimedia file as I discussed as a demonstration of a workaround.

The details of why this doesn't work have nothing to do with the spec or users perceptions - they have to deal with the WebKit code.  The details I believe are that <symbol> is not treated as a visible element (as per spec).  As a consequence it is not iterated over when doing the hit-test for mouse hovering.  If I could have fixed this for 16854, I would have.