How to change pdf-tools navigation keybindings?
reddit / emacs

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OutOfCharm · 2022-11-05 08:03

Want to remap Scroll Up / Down by Page-full keybindings `space`
`backspace` to `[` `]`.

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Charnia · 2022-11-05 09:43

`(define-key pdf-view-mode-map (kbd "]") 'pdf-view-next-page-command)`
`(define-key pdf-view-mode-map (kbd "[") 'pdf-view-previous-page-
command)`


Note that this does not work in evil mode, you'll probably need
something like

`(evil-define-key 'normal pdf-view-mode-map (kbd "]") 'pdf-view-next-
page-command) ;; not tested`

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OutOfCharm · 2022-11-05 10:01

That's great, but it remaps `n` and `p`. What about `space` and
`backspace`, which will leave in a page with more hits.

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Bodertz · 2022-11-05 11:53

Find out what commands SPC and backspace are bound to and remap those
commands to [ and ].

`C-h k SPC`

`C-h k DEL`

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Charnia · 2022-11-05 12:03

I'm a bit confused, in the original question you wanted to scroll up
and down a full page using `[` and `]` right? The `n` and `p` buttons
are also bound to the same commands by default, independent of \[ or
\].

SPC is bound to `pdf-view-scroll-up-or-next-page` by default, which
scrolls or skips to the next page if at the bottom of the page. If you
want to change space to always scroll a page, you can use `(define-key
pdf-view-mode-map (kbd "SPC") 'pdf-view-next-page-command)`, or if you
want \] to have the same functionality as space use `(define-key pdf-
view-mode-map (kbd "]") 'pdf-view-scroll-up-or-next-page)`

You can always check which keys are bound in a certain mode with `C-h
m`, or check what a certain key does with `C-h k`.

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OutOfCharm · 2022-11-05 12:13

Sorry for such a confusion, I originally followed the command
description of the pdf-tools on github.  And also wanna thank you, for
your concrete response!

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OutOfCharm · 2022-11-05 12:14

That's helpful. Thank you!

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Charnia · 2022-11-05 12:26

No problem! If you're stuck again let me know. I know Emacs is a bit
much and confusing at the start, we've all been there :)

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Bodertz · 2022-11-05 12:32

Sure.  The inverse of that is `C-h f <name of command>` to find out
what keys if any are bound to that command.