Hello @all,

for musical score sheet display reasons I am presently searching for a linux application that will allow appropriate page turning, but so far I was unlucky. Okular seems to be only a near miss with respect to further required features, though, so I thought I better ask if I might just have not looked properly enough.

Problem: I would like to show two pages of a multi-page score sheet on a larger display (20" or larger) placed horizontally on a music stand. This size is large enough to display the equivalent of 2 conventional paper pages side by side in one view. A page turn should now forward the view only by one "paper" page, i.e. half of the display width. The reason: reading musical scores you frequently need to stay on the presently played page but need to have a look forward on the score to see what comes next. Additionally there are repeat phrases frequently, so you need to "fine-tune" the required 2-page section to be displayed at a given time.

Okular, as all other PDF viewers, only allows to "turn pages" in 2-page mode modulo 2: You replace the complete 2 page view with the next one, so the "one page forward with display overlap" is not feasible. There is just one exception that I found so far: PDF viewing in Firefox: If you forward to next page, the currently displayed pages are shifted just by one to the left. But Firefox won't let you edit your sheets which is necessary for musicians to be able to, as they "work" with the sheets and need to annotate the document graphically.

There are multiple shortcut command in Okular presently to turn pages: PAGE_UP/DN, CURSOR_UP/DN, CURSOR_Left/Right all do the same, which is a pity. Could the behaviour of Okular be changed in a way to discriminate between "one logical page forward" and "complete present view forward". Or is this already realized and I just didn't find the feature?

Just a side remark: Using PAGE_UP/DN for the requested feature would be very fine, as this would create some compatibility with typical settings of Bluetooth foot pedals that are frequently used for the page turning process while playing. But most pedals have the possibility to use the other mentioned combinations as well.

Kind regards,
Petra