[Okular-devel] Page duration in presentation mode

Pino Toscano toscano.pino at tiscali.it
Mon Jan 29 00:48:48 CET 2007


Hello,

the PDF format specifies a time for a page to be displayed on the screen 
(during the presentation mode), thus we support this kind of information in 
our Page objects.
Furthermore, we have an option to auto-advance to the next slide after a 
configurable amount of seconds.
Acrobat Reader (at least the version 7.x) has both the information, too, and 
it operates this way:
- if a page specifies a duration, then it waits for that value and switch to 
the next page
- if a time is specified in the preferences as auto-advance time, it uses that 
time and advance to the next page
- nothing of the above, no auto advance

The implementation I did in okular is a bit different:
- if any of the page duration or the auto-advance time or both is specified, 
then okular waits the shortest time of the two
- if not, no auto advance

The PDF specifications do not say what to do in this case, but it's true 
either we could do as acroread to keep compatibility with it, as it's the 
only application that does that (correct me if I'm wrong).

What should we do with this?
a) keep the current implementation
b) conform to the acroread behaviour
c) else [specify...]

-- 
Pino Toscano
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