Accessibility add an arrow cue that page is scrolling down or up

[smustgrave]

From a Drupal issue but seems more like a general shepherd feature (correct me if I'm wrong)

"While your demo video has scroll bars, and I have my scroll bars set to always on, some operating systems (in my case macOS) allow setting the scroll bars to only display when you need them. So people who have that setting may not be able to tell where the particular tour point of interest is on the page. So they trade information for safety.

I don't want to over-engineer this, but such people might need a brief arrow cue that we are going down the page. Maybe even one arrow for a short distance or three for a long distance. Maybe the arrow would fade in and out. If this needs to be a separate issue, please let me know and I'll be happy to file."

[RobbieTheWagner]

Hi @smustgrave, could you please elaborate on why the visual indicator is needed? Is scrolling the thing you want to see into view not sufficient?

[smustgrave]

This was opened as an accessibility issue on the Drupal module. Not sure which rule it would fall under

[thegbomb]

I believe the Accessibility issue stems from:
WCAG 2.1 introduces Success Criterion 2.3.3 Animation from Interactions

There is an issue on Drupal.org that goes into more detail regarding disabling animations:
https://www.drupal.org/project/ideas/issues/2928103

Ultimately, unexpected movement can cause issues. If the scroll bars are not on, the page may be longer than expected, so scrolling down without warning is not ideal.