5.8 KiB
Themes
First you'll need to place selected themes in your themes directory (i.e ~/.config/helix/themes), the directory might have to be created beforehand.
To use a custom theme add theme = <name> to your config.toml or override it during runtime using :theme <name>.
The default theme.toml can be found here, and user submitted themes here.
Creating a theme
First create a file with the name of your theme as file name (i.e mytheme.toml) and place it in your themes directory (i.e ~/.config/helix/themes).
Each line in the theme file is specified as below:
key = { fg = "#ffffff", bg = "#000000", modifiers = ["bold", "italic"] }
where key represents what you want to style, fg specifies the foreground color, bg the background color, and modifiers is a list of style modifiers. bg and modifiers can be omitted to defer to the defaults.
To specify only the foreground color:
key = "#ffffff"
if the key contains a dot '.', it must be quoted to prevent it being parsed as a dotted key.
"key.key" = "#ffffff"
Possible modifiers:
| Modifier |
|---|
bold |
dim |
italic |
underlined |
slow\_blink |
rapid\_blink |
reversed |
hidden |
crossed\_out |
Possible keys:
| Key | Notes |
|---|---|
attribute |
|
keyword |
|
keyword.directive |
Preprocessor directives (#if in C) |
keyword.control |
Control flow |
namespace |
|
punctuation |
|
punctuation.delimiter |
|
operator |
|
special |
|
property |
|
variable |
|
variable.parameter |
|
type |
|
type.builtin |
|
type.enum.variant |
Enum variants |
constructor |
|
function |
|
function.macro |
|
function.builtin |
|
comment |
|
variable.builtin |
|
constant |
|
constant.builtin |
|
string |
|
number |
|
escape |
Escaped characters |
label |
For lifetimes |
module |
|
ui.background |
|
ui.cursor |
|
ui.cursor.insert |
|
ui.cursor.select |
|
ui.cursor.match |
Matching bracket etc. |
ui.cursor.primary |
Cursor with primary selection |
ui.linenr |
|
ui.linenr.selected |
|
ui.statusline |
|
ui.statusline.inactive |
|
ui.popup |
|
ui.window |
|
ui.help |
|
ui.text |
|
ui.text.focus |
|
ui.menu.selected |
|
ui.selection |
For selections in the editing area |
ui.selection.primary |
|
warning |
LSP warning |
error |
LSP error |
info |
LSP info |
hint |
LSP hint |
These keys match tree-sitter scopes. We half-follow the common scopes from macromates language grammars with some differences.
For a given highlight produced, styling will be determined based on the longest matching theme key. So it's enough to provide function to highlight function.macro and function.builtin as well, but you can use more specific scopes to highlight specific cases differently.
Color palettes
You can define a palette of named colors, and refer to them from the
configuration values in your theme. To do this, add a table called
palette to your theme file:
ui.background = "white"
ui.text = "black"
[palette]
white = "#ffffff"
black = "#000000"
Remember that the [palette] table includes all keys after its header,
so you should define the palette after normal theme options.