1200137 - Auto Scroll does not work horizontally

Status: RESOLVED DUPLICATE of bug 962249

(Core :: XUL, defect)

Description

[Kou]

User Agent: Mozilla/5.0 (Windows NT 6.3; WOW64; rv:43.0) Gecko/20100101 Firefox/43.0
Build ID: 20150830030224

Steps to reproduce:

Side scrolling does not work for me at all with Nightly (the latest version). When you hold the middle mouse button, you can scroll to the side, this does not work on Nightly.

Comment 1

[Kou]

Attachment: 01_魔法使いハウルと火の悪魔 [01].html

Well actually, side scrolling does work on normal websites, it just doesn't work for me on these type of HTML documents. I also tried it with all my addons disabled.

Comment 2

[[:Towkir] Ahmed]

Reproduced on my latest Nightly. Horizontal auto scroll should be allowed I think.

Comment 3

[Ryan VanderMeulen [:RyanVM]]

Kou, would you be interested in trying to narrow this regression down using the mozregression tool? http://mozilla.github.io/mozregression/

Comment 4

[Alice0775 White]

Pushlog:
https://hg.mozilla.org/integration/mozilla-inbound/pushloghtml?fromchange=13869ca774bb&tochange=547a2d626a62

Triggered by: Bug 1079154


It seems not a regression. But, it is CSS3 writing-mode (vertical text) implimentation level bug.

Comment 5

[Jonathan Kew [:jfkthame]]

Hmm ... not being a 3-button mouse user, I'd never tried to use this kind of scrolling. But yes, it appears that it doesn't work horizontally in a vertical writing-mode document.

Is this Windows-specific, or is there similar behavior on other platforms?

I'm guessing this may be an issue with how the scroll events are handled at the widget level. <<Looks suspiciously at a file named WinMouseScrollHandler.cpp ...>>

Comment 6

[Alice0775 White]

I think the root cause is as same as Bug 962249.


FYI,
I can reproduce the problem on Ubuntu14.04 and Windows7 as well.
{ on Ubuntu, you should set mgeneral.autoScroll = true for test)

Comment 7

[Alice0775 White]

s/mgeneral/general/

Comment 8

[Jonathan Kew [:jfkthame]]

Ah, right.... yes, it is almost certainly the same as bug 962249 (and so my initial guess in comment 5 was wrong).

Note that the scrolling *does* work horizontally if the document's writing-mode is vertical-lr (not useful for Japanese, of course, but illustrates the connection with the RTL case in bug 962249).

Comment 9

[Kou]

(In reply to Alice0775 White from comment #6)
> I think the root cause is as same as Bug 962249.
> 
> 
> FYI,
> I can reproduce the problem on Ubuntu14.04 and Windows7 as well.
> { on Ubuntu, you should set mgeneral.autoScroll = true for test)

It actually does work on Chrome, so I don't think it's an OS problem.

Comment 10

[Jonathan Kew [:jfkthame]]

Bug 962249 has now landed on central, and I confirmed the testcase here works as expected with a current trunk build; resolving as duplicate.

Comment 11

[Firefox Bug Husbandry Bot]

Moving to Core:XUL per https://bugzilla.mozilla.org/show_bug.cgi?id=1455336