Accessibility: Make aria-hidden for the canvas a patch setting.

[TobyKLight]

Request is to have a checkbox in patch settings that allows you to mark your \<canvas> with the aria-hidden attribute.

Usecase is when your canvas is entirely decorative (e.g background of a website that does not contribute to content) and should not be announced by assistive technology.

More info on aria-hidden

[pandrr]

we now have this accessibility op on dev.cables.gl which can set alt and aria-hidden for any html element. could there more properties added ? let me know!

[pandrr]

should this op also have a role parameter ?

what about aria-label ?

[TobyKLight]

These were the accessibility properties I needed to make UIs so far on HTML, that I put on the HTMLElementExtended op.

• Role attribute
• Keyboard Focusable (tabindex)
  • Has an option to omit entirely, as this creates a third functionality that prevents an element can be focused with element.focus()
• Aria-Disabled
• Aria-LabelledBy
  • When blank it omits this attribute
• Aria-DescribedBy
  • When blank it omits this attribute
• Aria-Label
  • Has a separate checkbox to enable because you may intentionally want a blank aria-label to specify an element is decorative.
• Aria-Description
  • Has a separate checkbox to enable because you may intentionally want a blank aria-description (theoretically)
• Aria-Hidden

Note the HTMLElementExtended op allows you to set any tag as well so you can make instead of

. But you may need both as there are more accessible roles than HTML tag types.

[TobyKLight]

Note also with the ElementAccessibility op as it is currently: only \<img> elements support the alt attribute. Better I think to just add alt as a property to the ImageElement op.

aria-label and aria-labelledby attributes are the way to provide alt text for most element types. (But not all... See the MDN article for details)

[pandrr]

btw. there is now a elementSetAttribute operator, which can be used to set all those aria attributes

[pandrr]

hey, maybe you could take the current Ops.Html.ElementAccessibility op and add your accessibility stuff to it ?

pull request highly appreciated :)