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[Bug 28257] [webvtt] start/end linked to left/right [I18N-ISSUE-422]

From: <bugzilla@jessica.w3.org>
Date: Sun, 14 Feb 2016 00:28:40 +0000
To: www-international@w3.org
Message-ID: <bug-28257-4285-PO7U4pY4o4@http.www.w3.org/Bugs/Public/>
https://www.w3.org/Bugs/Public/show_bug.cgi?id=28257

--- Comment #30 from Silvia Pfeiffer <silviapfeiffer1@gmail.com> ---
(In reply to Simon Pieters from comment #28)
> (In reply to Silvia Pfeiffer from comment #26)
> > The reason for this is that it feels much more natural when you author a cue
> > text and you say "align:start" and you've made your cue box smaller (e.g.
> > 50% size) that this box sits at the beginning of the screen and not in the
> > middle. Everything else is confusing.
> 
> So for RTL text, with your proposal, the text begins in the middle of the
> screen and extends leftwards. Are you saying that that is not confusing?
> 
>  +---------------------------------------+
>  |                                       |
>  |         txet cibarA                   |
>  +---------------------------------------+
>   ^ 0%               ^ 50%              ^ 100%
> 

When the text is "align:start" and the box is 50% size, and you have RTL text,
the text box sits in the right half, not the left half like this:

+---------------------------------------+
|                                       |
|                           txet cibarA |
+---------------------------------------+
 ^ 0%               ^ 50%              ^ 100%

That's the intention of automating the box placement based on the alignment and
directionality.

If the algo doesn't describe it this way, then there's a bug for RTL.


> > > My proposal
> > > https://github.com/w3c/webvtt/pull/273 is to let align:start/end be
> > > positioned the same as align:center.
> > 
> > That has been found to be counter-intuitive by many captioners.
> 
> Do you have a citation?

Was mostly oral feedback. Specifically, when people used less than 100% width
and specified alignment to be left. Then it seemed that the text would appear
at random positions somewhat off the center and that was extremely confusing.


> > I could live with replacing 'start' and 'end' with 'left', 'top', 'right'
> > and 'bottom'.
> 
> (In the PR we agreed with 'line-left' and 'line-right'.)

Yes, I think that works even better!

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