Zen Mode like

[erasin]

This is a trick, but it's enough for me to edit Markdown for now.

When configuring :set soft-wrap.wrap_at_text_width true, the View.area will be center.
Use :set text_width 120 to set View.area.width.

helix-view/src/views.rs

pub fn inner_area(&self, doc: &Document) -> Rect {
  // zen mode with wrap and text_width
  let config = doc.config.load();
  let self_width = self.inner_width(doc);
  let text_width = doc
      .language_config()
      .and_then(|config| config.text_width)
      .unwrap_or(config.text_width) as u16;
  let soft_wrap_at_text_width = doc
      .language_config()
      .and_then(|config| {
          config
              .soft_wrap
              .as_ref()
              .and_then(|soft_wrap| soft_wrap.wrap_at_text_width)
      })
      .or(config.soft_wrap.wrap_at_text_width)
      .unwrap_or(false);

  let space_width = if soft_wrap_at_text_width && self_width.gt(&text_width) {
      (self_width - text_width) / 2
  } else {
      0
  };

  self.area
      .clip_left(self.gutter_offset(doc) + space_width)
      .clip_right(space_width)
      .clip_bottom(1) // -1 for statusline
}

I use markdown in my project, and create file .helix/languages.toml, it is possible to use centering only when editing markdown.

[[language]]
name = "markdown"
text-width = 80
soft-wrap = { enable = true, wrap-at-text-width = true }

[CptPotato]

One related thing I like to do is using changing the theme colors of line numbers and the status line to match the background color:

[erasin]

If you want only show line-number of select line, we need append like Standalone mode for editor.rs: LineNumber, then edit gutter.rs line_numbers.

this is a simple demo:

helix-view/src/editor.rs

pub enum LineNumber {
    Absolute,
    Relative,
    Standalone,
}

helix-view/src/gutter.rs

#pub fn line_numbers<'doc>(
#...
#Box ... 

                if first_visual_line {
                    if line_number == LineNumber::Standalone {
                        if selected {
                            write!(out, "{:>1$}", display_num, width).unwrap();
                        } else {
                            write!(out, "{:>1$}", " ", width).unwrap();
                        }
                    } else {
                        write!(out, "{:>1$}", display_num, width).unwrap();
                    }
                } else {
                    write!(out, "{:>1$}", " ", width).unwrap();
                }

#...
#}

then , build , and :set line-nubmer standalone for test.

[David-Else]

@erasin Brilliant work!

@CptPotato With the latest master recognising config.toml in the .helix dir we can go one better and get rid of line numbers for markdown only workspaces:

.helix/config.toml

[editor]
gutters = ["diagnostics", "spacer", "diff"] # no line-numbers

[dessalines]

How do you enable this for markdown only?

[sicher]

Nice! There’s also #3239. I really hope to see this feature in Helix.

[sicher]

I just figured out that you can do :set gutters.line-numbers.min-width 30 or whatever matches your terminal width and settings.

[David-Else]

@sicher Of course! Brilliant :) For now we can use this, hopefully 'toggle' will work in the future:

[keys.normal.space]

Z = ":set gutters.line-numbers.min-width 3"
z = ":set gutters.line-numbers.min-width 48"

I measured on my monitor with a bit of paper, with line wrap on this is perfect/

[David-Else]

With the latest update toggle works!

z = ":toggle gutters.line-numbers.min-width 48 3"

[dessalines]

These don't work if you have line numbers disabled.

[ShalokShalom]

Is there a way to center the text for code as well?

[ZioKli]

I am using David-Else's suggestion to flip back and forth between "zen mode" and regular spacing in any type of file.

[ShalokShalom]

I dont understand the context of this answer?