Audioreader - Advance pages (not just paragraphs)

[mekarpeles]

Context

Often when I'm listening to a book, it is during transit on mobile. I listen to several pages at a time. When I return to the book (especially if its been some time) the page is not always correct and so I listen to snippets to re-find my place (which is typically off by several pages).

My only options for navigation are to move forward / backward one paragraph at a time (which requires 10 or so button presses to advance a page) or to stop audioreading, switch pages, and then restart audioreading (several times in a row) which is hard to do while in transit.

What I'd like to be able to do is just click the forward and backward button the scrubber to go forward/backward a page. But instead, the scrubber changes the current visible page without affecting playback.

One might argue that this lets someone listen to a book and jump forward to (e.g.) look at a figure on another page. But even this affordance is not especially useful because, as soon as the current active paragraph is read, the reader brings the patron back to the active page, loading the next paragraph (which effectively negates or diminishes potential advantages of previewing a different page than the one being read).

My proposal is that the back / next buttons on the scrubber should change the page and restart the audioreader from the beginning of the page or to add new buttons which go back / forward one page.

This becomes more complicated when we consider that on mobile, there are no back / forward buttons on the scrubber (in neither 1-up or 2-up mode) which I argue there should be for this reason.

In 1-up mode it's reasonable that scrolling pages shouldn't restart the audioreader. But in this case, I should have a way to advance the audioreader by a page (by clicking the next/previous buttons on the scrubber -- which are currently non-existent).

In 2-up mode, I do think that clicking on the next page should start the audioreader iff the audioreader is currently reading.

Summary of Changes

1. On mobile, add left / right advance buttons back to scrubber
2. If left/right scrubber buttons pressed while in read-aloud mode (and reader is playing) then autoplay the new page
3. On 2-up mode, if a page is tapped/pressed to advance (and reader is playing) then autoplay the new page

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[mekarpeles]

During discussion, w/ @cdrini,

1. fix bug: don't snap patron back to spot in book when paragraph changes if the page changes
2. if follow-along enabled, book is playing, and page turned, then restart playing from that page
3. if follow-along disabled, then continue reading previous page/paragraphs but don't snap back to page (i.e. [1])
4. Add back/forward 1-page btns to the UI for the audio-reader or at minimum, make them available on the UI -- 1-up mode has no scrubber < > btns and no way to click and advance one page in either direction.

lock icon to enable or disable "follow along". i.e. if we disable follow-along, then we can advance to the next page without the reader starting from that page.

Question:

• whether we are enabled, disabled by default.
• should this be a sticky/remembered mode?