Xibo

Scrolling too Fast to read when set to 1

Bug #1101835 reported by Dan Garner
26
This bug affects 3 people
Affects Status Importance Assigned to Milestone
Xibo
Fix Released
Undecided
Dan Garner
Xibo 1.7.0-alpha2 "Tuttle"

Bug Description

Hi,

I have a storyline to tell which runs for about 120 seconds. However, even when the text size is correct for the screen the lowest scroll speed I can set (which is 1) is still too fast for the average reader to follow the text comfortably.

I've tried decimals (0.75 for example), but the system removes the point, hence I can't get any slower than 1, which as I say is too fast.

Is there a way to change this setting to make the text go slower?

Dan Garner (dangarner)
Changed in xibo:
milestone: none → 1.4.2
Dan Garner (dangarner)
Changed in xibo:
milestone: 1.4.2 → 1.4.3
Revision history for this message
Mike H (s-mike-s) wrote :

I would agree slowing "up" scroll by 25 to 50 % of the "1" speed would make the text easier to read.

Revision history for this message
Thierry Leblond (tleblond) wrote :

I do agree!75% slower than 1 would be essential.

Alex Harrington (alexharrington)
Changed in xibo:
milestone: 1.4.3 → 1.7.0
Thierry Leblond (tleblond)
Changed in xibo:
status: New → Confirmed
assignee: nobody → Dan Garner (dangarner)
assignee: Dan Garner (dangarner) → nobody
Dan Garner (dangarner)
Changed in xibo:
milestone: 1.7.0 → 1.7.0-alpha
Revision history for this message
Dan Garner (dangarner) wrote :

Scrolling is managed by a jQuery library called marquee by Remy Sharp (MIT licence) http://remysharp.com/tag/marquee

The problem with scrolling speeds is three fold:

1. Changing the code means that everyones settings are wrong on upgrade
2. Scrolling is generally hard to get smooth (each time we revisit there is a better solution)
3. Our scaling method makes it even more difficult

A little more on the scaling...

The XLF is generated and stored at the designer resolution. In order to get the scaling working appropriately no matter what resolution the final output a CSS3 transform is applied to zoom the content from the layout designer resolution to the end display resolution.

This means that the scrolling is "sped up" along with the zoom - but does mean the text should take the same duration to get across the screen regardless of the final resolution.

Revision history for this message
Dan Garner (dangarner) wrote :

https://bugs.launchpad.net/bugs/1347566 might be a resolution.

Dan Garner (dangarner)
Changed in xibo:
milestone: 1.7.0-alpha → 1.7.0-alpha2
Revision history for this message
Dan Garner (dangarner) wrote :

Resolved by virtue of the layout scaling changes linked above.

Changed in xibo:
status: Confirmed → Fix Committed
assignee: nobody → Dan Garner (dangarner)
Dan Garner (dangarner)
Changed in xibo:
status: Fix Committed → Fix Released
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