[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Stéphane Wirtel]

Change by Stéphane Wirtel :


--
resolution:  -> fixed
stage: patch review -> resolved
status: open -> closed

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Stéphane Wirtel]

Stéphane Wirtel  added the comment:


New changeset 8ab24b2ebcf99f703f00297cb3a0c3ff857eecf8 by Stéphane Wirtel 
(Julien Palard) in branch '2.7':
[2.7] bpo-24712: Doc: Make sidebar sticky using browser support. (GH-13179)
https://github.com/python/cpython/commit/8ab24b2ebcf99f703f00297cb3a0c3ff857eecf8


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nosy: +matrixise

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Julien Palard]

Change by Julien Palard :


--
pull_requests: +13095
stage: needs patch -> patch review

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[karl]

karl added the comment:

@ezio.melotti 
What is the next step for getting the patch accepted.

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nosy: +karlcow

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Mike Taylor]

Mike Taylor added the comment:

The bug for Chrome to ship support of position: sticky is here: 
https://bugs.chromium.org/p/chromium/issues/detail?id=231752 -- it's in active 
development.

But this patch fixes the jerky sidebar in Firefox as well.

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Mike Taylor]

Mike Taylor added the comment:

OK, so uh, somehow a few months escaped me before I could get to this. >_>

(I've also just signed the Contributor Agreement with the PSF)

--
keywords: +patch
Added file: http://bugs.python.org/file42917/docs-sidebar.patch

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Mike Taylor]

Mike Taylor added the comment:

Great, thanks Ezio! Will take a stab now.

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Ezio Melotti]

Ezio Melotti added the comment:

CSS: Doc/tools/pydoctheme/static/pydoctheme.css
JS: Doc/tools/static/sidebar.js

The repo is https://hg.python.org/cpython/, but there should be a github mirror 
too.  See also the devguide for more info.

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Mike Taylor]

Mike Taylor added the comment:

I can reproduce on Chrome and Firefox Nightly --

Carol, if I'd like to write a patch where would I do that? I see 
https://github.com/python/pythondotorg, but am not sure that's the right repo. 
Thanks!

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nosy: +Mike Taylor

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[R. David Murray]

Changes by R. David Murray :


--
nosy:  -r.david.murray

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Kartikaya Gupta]

Kartikaya Gupta added the comment:

Please note that this issue will affect Firefox 46 and up as well; we have 
enabled asynchronous scrolling as of Firefox 46.

Bugzilla bug for this issue: https://bugzilla.mozilla.org/show_bug.cgi?id=997269
Announcement for asynchronous scrolling: 
https://groups.google.com/d/msg/mozilla.dev.platform/X2BwGm348jI/Tl26C_1JBAAJ

Also, in Firefox 46 and up, if you open the browser's web console and scroll 
these documentation pages, you should see a warning about scroll-linked effects 
with pointers to additional info on why this is happening.

--
nosy: +kats

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Ned Deily]

Changes by Ned Deily :


--
nosy: +georg.brandl

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Biwin John]

Biwin John added the comment:

The problem exist with the Chrome on Ubuntu, Windows and OSX, but ony with the 
python docs for version 2.7.

Docs for 2.6 use the same sidebar.

But in 2.7 docs, the content of sidebar is positioned with the style added on 
scroll,

style="float: left; margin-right: 0px; width: 202px; top: 13px;"

The top value is calculated on scroll, the same code works with FireFox without 
any problem.

So it might be the way chrome handles the change in values. And we must 
workaround with our code than waiting for Chrome to get fixed.

Needs to be fixed as, 2.7 is the most used version, comes default with most 
distros and chrome is the most used browser (50.25% of 
all)[https://en.wikipedia.org/wiki/Usage_share_of_web_browsers]

Recommendations:
1. Change the sidebar behavior to the 2.6 docs sidebar one.(default top value, 
users can scroll up to see the content)
or.
2. Make the sidebar position:fixed and provide a inner scroll bar.

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Steve Dower]

Changes by Steve Dower :


--
components:  -2to3 (2.x to 3.x conversion tool), Benchmarks, Build, 
Cross-Build, Demos and Tools, IO, Installation, Interpreter Core, Library 
(Lib), Tests, Unicode, Windows, XML, email
nosy:  -steve.dower

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[asal ada]

Changes by asal ada :


--
components: +2to3 (2.x to 3.x conversion tool), Benchmarks, Build, Cross-Build, 
Demos and Tools, IO, Installation, Interpreter Core, Library (Lib), Tests, 
Unicode, Windows, XML, email
nosy: +barry, haypo, paul.moore, r.david.murray, steve.dower, tim.golden, 
zach.ware

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Serhiy Storchaka]

Changes by Serhiy Storchaka :


--
nosy: +ezio.melotti

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Carol Willing]

Carol Willing added the comment:

Biwan John, thanks for the issue report.

I can confirm that there is jitter due to scroll speed lag in Chrome for Python 
2.7 docs. This behavior does not happen with Python 3.x docs. No issues with 
Firefox.

I am using Mac OS X 10.10 with up-to-date Chrome and Firefox.

I believe that this is likely a Chrome scroll issue and not a Python docs or 
Sphinx issue.

I have triaged this as "needs patch" in case someone is aware of a workaround 
to resolve. If this is still open after a month, I would recommend closing the 
issue as a "third party" issue

--
nosy: +willingc
priority: normal -> low
stage:  -> needs patch

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Biwin John]

New submission from Biwin John:

The sidebar on the documentation pages ex. 
https://docs.python.org/2/library/collections.html vibrates/flashes on mouse 
wheel scroll. 
The sidebar with class sphinxsidebar, works okay when scrolling with the 
scrollbar, Firefox but not with mouse wheel on Chrome.


please consider fixing it.

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[issue24712] Docs page's sidebar vibrates on mouse wheel scroll on Chrome.

[Biwin John]

Changes by Biwin John :


--
assignee: docs@python
components: Documentation
nosy: Biwin John, docs@python
priority: normal
severity: normal
status: open
title: Docs page's sidebar vibrates on mouse wheel scroll on Chrome.
type: behavior
versions: Python 2.7

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