RE: CSS property for visually hiding an element

> François REMY 於 4/4/2017 12:17 PM 寫道:
> > Aural stylesheets are not used for screen readers, and screen still applies.
> > As the name implies, a screen reader reads the screen.
>
> That isn't the implication I get out of CSS2.2¹ and CSS1 Speech²

There isn't any browser that supports css-speech, nor the aural/speech media types. To support css-speech, a browser would have to come with its own built-in screen reader, which isn't at all what blind people desire at this point. 

This specification is highly inspirational and to be honest only practical for ePub audiobooks (and maybe some cortana/echo/in-car scenarios). All mentions of blind people in these specs are inspirational but do not correspond to any reality faced by blind people when browsing the web. What blind people need is very different from what a sighted person in a car or listening to an amazon echo would need, and those use cases cannot be easily reconciled. 

A screen reader cannot "get" an aural stylesheet because it does not get to deal with css at all. Can you imagine the hell it would be for screen readers if they had to implement custom logic for every application framework in a different way, especially when those frameworks can be contained in each other (a flash applet in an html page displayed in a xaml browser chrome)? It is just not practical. 

Screen readers for the most part rely on a standardized model which all application frameworks in an operating system have to implement (and which is partially interfaced on the web through aria and built-in html semantics). This ui-automation model isn't sound-based in any operating system; in all honestly that is not a problem blind people even feel the need to solve right now.

Given aural stylesheets are about converting a document to a sound+markers space, they are therefore totally inapplicable to screen readers.

Received on Wednesday, 5 April 2017 21:07:54 UTC