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Holding down left/right arrow keys does not work as expected in previewer
Environment
- TeXstudio: 4.3.1
- Qt: 5.15.8
- OS: Linux Debian Bookworm
- TeX distribution: texlive
Expected behavior
In the preview window, when I hold down the left/right arrow keys, I expect to continue scrolling through pages until I let go of the key.
Actual behavior
When I hold down the left/right arrow, it moves one page and then stops. To move N pages, I have to press the key N times. This occurs for both the windowed previewer and the embedded previewer.
you may learn more about the behavior of the arrow and page keys when you switch to continuous mode (Menu View/Continuous)
@octaeder: the page up/page down keys behave differently from the arrow keys. It is true that the "page down" key has the correct repeating behaviour when I hold it down. However, when I am in continuous mode, the page down key scrolls down by one "screenful", this is much less useful than the right arrow which scrolls down exactly one page of the document. I am working on a set of slides so I usually want to "snap" to the top of a slide every time I scroll.
I also tried switching off continuous mode. If I display only 1x1 pages, then everything is ok, and the page up / page down solution is reasonable. If I display 1x2 pages, then the page up / page down behaviour is a bit odd: the first page down scrolls within the existing 2 pages shown, then the next one moves to the next slide. In order to get the desired behaviour I have to change the zoom to make sure the 2 pages fit entirely on the screen, but then everything is too small.
When I am connected to an external monitor, then I prefer the 2x1 layout, and there the page up / page down does exactly what I want.
Anyway, I guess it is not a big deal, but it's just a bit frustrating that the left/right arrow keys do exactly what I want in all cases, except that they don't repeat properly. I have never seen this behaviour in another program, and I don't understand why it would be different in texstudio. Is it a deliberate design decision for the arrow keys not to function in the usual way?
OK, I see the problem. I just discovered now that if I zoom in (so that the width of the page is larger than the window), then the right arrow actually really does "scroll" the page around within the view, until I hit the edge of the page, at which point it stops. Then if I hit the right arrow again, it jumps to the next page. So now at least I understand why the arrow key behaves the way that I am seeing. I guess this is reasonable behaviour.
Unfortunately, this seems to mean there does not exist a command in texstudio to do what I want. I would really like to be able to scroll around "one page at a time". I guess my only option is to use the 1x1 non-continuous view.
I would like to mention that the default "Document Viewer" in Debian (evince 43.1) does have the behaviour I want. When I am in continuous vertical view, the left/right arrows either (a) behave like texstudio if the current zoom has the document wider than the window, or (b) snap one page at a time if the document's width is less than or equal to the width of the window. I use this all the time in evince, and it would be great if texstudio could be made to work this way as well!