[Okular-devel] Re: page navigation issues in Facing Pages view mode

[NJuk Njuk]

On Sun, Jul 3, 2011 at 11:06 PM, Christopher Reichert <creichert07 at gmail.com
> wrote:

> >> the original bug report's account was not dissimilar to mine, where the
> >
> >> user remapped certain keys to what seemed like the logical actions ---
> >
> >> Next Page / Previous Page --- but the behavior was inconsistent from
> what
> >
> >> he expected in Facing Pages mode. i don't recall any other similar
> >
> >> actions listed in the shortcut dialog.
> >
> > As said at the moment we do not let you change the behaviour of
> PageUp/Down
> > keys to another keys.
> >
> > We can discuss if we should tie them to the NextPage/PrevPage actions. I
> > really do not have an opinion on that, so i would welcome people reading
> > this list voicing their opinions.
> >
>
> Doesn't "Forward in Document" and "Back in Document" have this
> behavior in facing pages mode?? I configured mine toshortcuts and it
> works perfectly for me ( same behavior as Page up and Page Down, as
> well as up and down arrows).
>
> IMHO, we should not remap NextPage and PrevPage to have the ability to
> move the viewport up and down to the next set of pages. This action
> would do just as bad of a job at describing what is actually
> happening. Forward in Document/Back in Document is much better at
> explaining this behavior.
>
> -Christopher
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i didn't notice these shortcuts, so i played around with them just now.

to me they seem to move forward / backward in some page view stack.  i was
testing this on a document that's been up in a window for over a week and,
as a result, am not sure what pages i had recently viewed, so the behavior
seemed odd...  for example, successive BackInDocument calls just displayed
the following pages in order: 10 + 11, 12 + 13, 10 + 11, 8 + 9, and 6 +7.

it did move both pages in the view simultaneously, but the order is not what
i was expecting.

it appears there may be some pushback on having the behavior of NextPage /
PreviousPage move the view in Facing Pages mode, but i'm curious why?

(1) what are the use cases for someone wanting to move a single page but not
both pages in the view?  i personally can't think of one, so maybe i am
missing something...perhaps, accessibility?

(2) anecdotally, on the various pdf viewers i use --- acrobat (linux, mac,
windows), evince (linux), skim (mac), preview (mac) --- the NextPage /
PreviousPage behavior in Facing Pages mode appears to be consistent among
all in that they move the view to the next / previous set of pages.  to be
clear, though, i'm simply using the arrow keys and/or PageUp / PageDown keys
so am not sure i'm actually calling their respective PageNext / PagePrevious
actions.
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