Smooth scrolling

[JoseConseco]

I did not saw anyone requesting this.

smooth_scroll.mp4

Document navigation without smooth scroll is very confusing IMO. Would love to se this in helix

[kirawi]

Does changing the value of scroll-lines from https://docs.helix-editor.com/configuration.html#editor-section help?

[JoseConseco]

Actually mouse scrolling is ok, but what I wished for was smooth scroll for: half page up/down, full page up/down hotkeys.
For nvim I use: neoscroll
Navigation without it, is very confusing IMO as it is impossible to track moved code with eyes. If you try it, then u wont be able to go back. IMO, lack of smooth page navigation, is reason why people do not use (half) page up or down that much.

[archseer]

is very confusing IMO

Personally I find smooth scrolling disorienting. It's also very inefficient because it will trigger lots of full screen redraws.

To get this into helix-term it would require a bunch of internal changes so we could animate the transition between positions. Right now we assume that an action gets a single redraw.

We will support smooth scrolling on alternate renderers one day though.

[txtyash]

Made a poll: #3746

[SteveLauC]

In vim or neovim, one can use CTRL-e and CTRL-y to do this.

In helix, my current workaround is:

1. To smoothly scroll down:
   1. use zb to move the cursor to the bottom
   2. then use j to scroll down.
2. To smoothly scroll up:
   1. use zt to move the cursor to the top
   2. then use k to scroll up.

Or you can add a key mapping for this combination:

[keys.normal]
C-e = ["align_view_bottom", "move_line_down" ]
C-y = ["align_view_top", "move_line_up" ]

---

Really love to see this feature added in helix:)

[batalooppak]

In vim or neovim, one can use CTRL-e and CTRL-y to do this.

In helix, my current workaround is:

1. To smoothly scroll down:

   1. use zb to move the cursor to the bottom
   2. then use j to scroll down.

2. To smoothly scroll up:

   1. use zt to move the cursor to the top
   2. then use k to scroll up.

Or you can add a key mapping for this combination:

[keys.normal]
C-e = ["align_view_bottom", "move_line_down" ]
C-y = ["align_view_top", "move_line_up" ]

Really love to see this feature added in helix:)

Thank you Steve. This works better to me. test both version to your liking:

[keys.normal]
# C-e = "scroll_down"
# C-y = "scroll_up"
C-e = ["scroll_down", "move_line_down"]
C-y = ["scroll_up", "move_line_up"]

NOTE: When cursor is in the first line it jumps to the 8th line. It doesn't happen from bottom to top

ADDENDUM: The cursor gets to the 8th line, because it's taking into account the scrolloff (default:5) + the movie_line_down. In step-by-step is like this: We are in line 1, we scroll_down, which leaves us at line 2, we move the cursor one more time with move_line_down leaves us at line 3 and the scrolloff (default: 5) leaves us at line 8.

helix/helix-term/src/commands.rs

Line 1555 in 2b7e7c8

(view.offset.vertical_offset + height - scrolloff - 1) as isize,

and that's why it doesn't happen at the bottom when scrolling up, because the buffer is allowed to be scrolled past the EOF.

ADDENDUM 2: Just learn about 'sticky view mode'. With sticky mode you just do Shift-z and then you can scroll with j/k keys.

[thomasschafer]

You can enable smooth scrolling with this plugin: https://github.com/thomasschafer/smooth-scroll.hx