nixos/config/nvim/lua/config/feline.lua
2023-02-08 23:54:40 +00:00

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-- Feline
-- https://github.com/EdenEast/nightfox.nvim/blob/main/mics/feline.lua
--
-- This file is a complete example of creating the feline configuration shown in the readme of
-- nightfox. This configuration generates its own highlight groups from the currently applied
-- colorscheme. These highlight groups are regenreated on colorscheme changes.
--
-- Required plugins:
-- - `feline-nvim/feline.nvim`
-- - `kyazdani42/nvim-web-devicons`
--
-- This file is required to be in your `lua` folder of your config. Your colorscheme should also
-- be applied before this file is sourced. This file cannot be located `lua/feline.lua` as this
-- would clash with the actual plugin require path.
--
-- # Example:
--
-- ```lua
-- vim.cmd("colorscheme nightfox")
-- require('user.ui.feline')
-- ```
--
-- This assumes that this file is located at `lua/user/ui/feline.lua`
local fmt = string.format
----------------------------------------------------------------------------------------------------
-- Colors
---Convert color number to hex string
---@param n number
---@return string
local hex = function(n)
if n then
return fmt("#%06x", n)
end
end
---Parse `style` string into nvim_set_hl options
---@param style string
---@return table
local function parse_style(style)
if not style or style == "NONE" then
return {}
end
local result = {}
for token in string.gmatch(style, "([^,]+)") do
result[token] = true
end
return result
end
---Get highlight opts for a given highlight group name
---@param name string
---@return table
local function get_highlight(name)
local hl = vim.api.nvim_get_hl_by_name(name, true)
if hl.link then
return get_highlight(hl.link)
end
local result = parse_style(hl.style)
result.fg = hl.foreground and hex(hl.foreground)
result.bg = hl.background and hex(hl.background)
result.sp = hl.special and hex(hl.special)
return result
end
---Set highlight group from provided table
---@param groups table
local function set_highlights(groups)
for group, opts in pairs(groups) do
vim.api.nvim_set_hl(0, group, opts)
end
end
---Generate a color palette from the current applied colorscheme
---@return table
local function generate_pallet_from_colorscheme()
-- stylua: ignore
local color_map = {
black = { index = 0, default = "#393b44" },
red = { index = 1, default = "#c94f6d" },
green = { index = 2, default = "#81b29a" },
yellow = { index = 3, default = "#dbc074" },
blue = { index = 4, default = "#719cd6" },
magenta = { index = 5, default = "#9d79d6" },
cyan = { index = 6, default = "#63cdcf" },
white = { index = 7, default = "#dfdfe0" },
}
local diagnostic_map = {
hint = { hl = "DiagnosticHint", default = color_map.green.default },
info = { hl = "DiagnosticInfo", default = color_map.blue.default },
warn = { hl = "DiagnosticWarn", default = color_map.yellow.default },
error = { hl = "DiagnosticError", default = color_map.red.default },
}
local pallet = {}
for name, value in pairs(color_map) do
local global_name = "terminal_color_" .. value.index
pallet[name] = vim.g[global_name] and vim.g[global_name] or value.default
end
for name, value in pairs(diagnostic_map) do
pallet[name] = get_highlight(value.hl).fg or value.default
end
pallet.sl = get_highlight("StatusLine")
pallet.sel = get_highlight("TabLineSel")
return pallet
end
---Generate user highlight groups based on the curent applied colorscheme
---
---NOTE: This is a global because I dont known where this file will be in your config
---and it is needed for the autocmd below
_G._generate_user_statusline_highlights = function()
local pal = generate_pallet_from_colorscheme()
-- stylua: ignore
local sl_colors = {
Black = { fg = pal.black, bg = pal.white },
Red = { fg = pal.red, bg = pal.sl.bg },
Green = { fg = pal.green, bg = pal.sl.bg },
Yellow = { fg = pal.yellow, bg = pal.sl.bg },
Blue = { fg = pal.blue, bg = pal.sl.bg },
Magenta = { fg = pal.magenta, bg = pal.sl.bg },
Cyan = { fg = pal.cyan, bg = pal.sl.bg },
White = { fg = pal.white, bg = pal.black },
}
local colors = {}
for name, value in pairs(sl_colors) do
colors["User" .. name] = { fg = value.fg, bg = value.bg, bold = true }
colors["UserRv" .. name] = { fg = value.bg, bg = value.fg, bold = true }
end
local status = vim.o.background == "dark" and { fg = pal.black, bg = pal.white } or { fg = pal.white, bg = pal.black }
local groups = {
-- statusline
UserSLHint = { fg = pal.sl.bg, bg = pal.hint, bold = true },
UserSLInfo = { fg = pal.sl.bg, bg = pal.info, bold = true },
UserSLWarn = { fg = pal.sl.bg, bg = pal.warn, bold = true },
UserSLError = { fg = pal.sl.bg, bg = pal.error, bold = true },
UserSLStatus = { fg = status.fg, bg = status.bg, bold = true },
UserSLFtHint = { fg = pal.sel.bg, bg = pal.hint },
UserSLHintInfo = { fg = pal.hint, bg = pal.info },
UserSLInfoWarn = { fg = pal.info, bg = pal.warn },
UserSLWarnError = { fg = pal.warn, bg = pal.error },
UserSLErrorStatus = { fg = pal.error, bg = status.bg },
UserSLStatusBg = { fg = status.bg, bg = pal.sl.bg },
UserSLAlt = pal.sel,
UserSLAltSep = { fg = pal.sl.bg, bg = pal.sel.bg },
UserSLGitBranch = { fg = pal.yellow, bg = pal.sl.bg },
}
set_highlights(vim.tbl_extend("force", colors, groups))
end
_generate_user_statusline_highlights()
vim.api.nvim_create_augroup("UserStatuslineHighlightGroups", { clear = true })
vim.api.nvim_create_autocmd({ "SessionLoadPost", "ColorScheme" }, {
callback = function()
_generate_user_statusline_highlights()
end,
})
----------------------------------------------------------------------------------------------------
-- Feline
local vi = {
-- Map vi mode to text name
text = {
n = "NORMAL",
no = "NORMAL",
i = "INSERT",
v = "VISUAL",
V = "V-LINE",
[""] = "V-BLOCK",
c = "COMMAND",
cv = "COMMAND",
ce = "COMMAND",
R = "REPLACE",
Rv = "REPLACE",
s = "SELECT",
S = "SELECT",
[""] = "SELECT",
t = "TERMINAL",
},
-- Maps vi mode to highlight group color defined above
colors = {
n = "UserRvCyan",
no = "UserRvCyan",
i = "UserSLStatus",
v = "UserRvMagenta",
V = "UserRvMagenta",
[""] = "UserRvMagenta",
R = "UserRvRed",
Rv = "UserRvRed",
r = "UserRvBlue",
rm = "UserRvBlue",
s = "UserRvMagenta",
S = "UserRvMagenta",
[""] = "FelnMagenta",
c = "UserRvYellow",
["!"] = "UserRvBlue",
t = "UserRvBlue",
},
-- Maps vi mode to seperator highlight goup defined above
sep = {
n = "UserCyan",
no = "UserCyan",
i = "UserSLStatusBg",
v = "UserMagenta",
V = "UserMagenta",
[""] = "UserMagenta",
R = "UserRed",
Rv = "UserRed",
r = "UserBlue",
rm = "UserBlue",
s = "UserMagenta",
S = "UserMagenta",
[""] = "FelnMagenta",
c = "UserYellow",
["!"] = "UserBlue",
t = "UserBlue",
},
}
local icons = {
locker = "", -- #f023
page = "", -- 2630
line_number = "", -- e0a1
connected = "", -- f817
dos = "", -- e70f
unix = "", -- f17c
mac = "", -- f179
mathematical_L = "𝑳",
vertical_bar = "",
vertical_bar_thin = "",
left = "",
right = "",
block = "",
left_filled = "",
right_filled = "",
slant_left = "",
slant_left_thin = "",
slant_right = "",
slant_right_thin = "",
slant_left_2 = "",
slant_left_2_thin = "",
slant_right_2 = "",
slant_right_2_thin = "",
left_rounded = "",
left_rounded_thin = "",
right_rounded = "",
right_rounded_thin = "",
circle = "",
}
---Get the number of diagnostic messages for the provided severity
---@param str string [ERROR | WARN | INFO | HINT]
---@return string
local function get_diag(str)
local diagnostics = vim.diagnostic.get(0, { severity = vim.diagnostic.severity[str] })
local count = #diagnostics
return (count > 0) and " " .. count .. " " or ""
end
---Get highlight group from vi mode
---@return string
local function vi_mode_hl()
return vi.colors[vim.fn.mode()] or "UserSLViBlack"
end
---Get sep highlight group from vi mode
local function vi_sep_hl()
return vi.sep[vim.fn.mode()] or "UserSLBlack"
end
---Get the path of the file relative to the cwd
---@return string
local function file_info()
local list = {}
if vim.bo.readonly then
table.insert(list, "🔒")
end
if vim.bo.modified then
table.insert(list, "")
end
table.insert(list, vim.fn.fnamemodify(vim.api.nvim_buf_get_name(0), ":~:."))
return table.concat(list, " ")
end
-- Create a table that contians every status line commonent
local c = {
vimode = {
provider = function()
return fmt(" %s ", vi.text[vim.fn.mode()])
end,
hl = vi_mode_hl,
right_sep = { str = "", hl = vi_sep_hl },
},
gitbranch = {
provider = "git_branch",
icon = "",
hl = "UserSLGitBranch",
right_sep = { str = " ", hl = "UserSLGitBranch" },
enabled = function()
return vim.b.gitsigns_status_dict ~= nil
end,
},
file_type = {
provider = function()
return fmt(" %s ", vim.bo.filetype:upper())
end,
hl = "UserSLAlt",
},
fileinfo = {
provider = { name = "file_info", opts = { type = "relative" } },
hl = "UserSLAlt",
left_sep = { str = "", hl = "UserSLAltSep" },
right_sep = { str = "", hl = "UserSLAltSep" },
},
file_enc = {
provider = function()
local os = icons[vim.bo.fileformat] or ""
return fmt(" %s %s ", os, vim.bo.fileencoding)
end,
hl = "StatusLine",
left_sep = { str = icons.left_filled, hl = "UserSLAltSep" },
},
cur_position = {
provider = function()
-- TODO: What about 4+ diget line numbers?
return fmt(" %3d:%-2d ", unpack(vim.api.nvim_win_get_cursor(0)))
end,
hl = vi_mode_hl,
left_sep = { str = icons.left_filled, hl = vi_sep_hl },
},
cur_percent = {
provider = function()
return " " .. require("feline.providers.cursor").line_percentage() .. " "
end,
hl = vi_mode_hl,
left_sep = { str = icons.left, hl = vi_mode_hl },
},
default = { -- needed to pass the parent StatusLine hl group to right hand side
provider = "",
hl = "StatusLine",
},
lsp_status = {
provider = function()
return vim.tbl_count(vim.lsp.buf_get_clients(0)) == 0 and "" or ""
end,
hl = "UserSLStatus",
left_sep = { str = "", hl = "UserSLStatusBg", always_visible = true },
right_sep = { str = "", hl = "UserSLErrorStatus", always_visible = true },
},
lsp_error = {
provider = function()
return get_diag("ERROR")
end,
hl = "UserSLError",
right_sep = { str = "", hl = "UserSLWarnError", always_visible = true },
},
lsp_warn = {
provider = function()
return get_diag("WARN")
end,
hl = "UserSLWarn",
right_sep = { str = "", hl = "UserSLInfoWarn", always_visible = true },
},
lsp_info = {
provider = function()
return get_diag("INFO")
end,
hl = "UserSLInfo",
right_sep = { str = "", hl = "UserSLHintInfo", always_visible = true },
},
lsp_hint = {
provider = function()
return get_diag("HINT")
end,
hl = "UserSLHint",
right_sep = { str = "", hl = "UserSLFtHint", always_visible = true },
},
in_fileinfo = {
provider = "file_info",
hl = "StatusLine",
},
in_position = {
provider = "position",
hl = "StatusLine",
},
file_winbar = {
provider = file_info,
hl = "Comment",
},
}
local active = {
{ -- left
c.vimode,
c.gitbranch,
c.fileinfo,
c.default, -- must be last
},
{ -- right
c.lsp_status,
c.lsp_error,
c.lsp_warn,
c.lsp_info,
c.lsp_hint,
c.file_type,
c.file_enc,
c.cur_position,
c.cur_percent,
},
}
local inactive = {
{ c.in_fileinfo }, -- left
{ c.in_position }, -- right
}
require("feline").setup({
components = { active = active, inactive = inactive },
highlight_reset_triggers = {},
force_inactive = {
filetypes = {
"NvimTree",
"packer",
"dap-repl",
"dapui_scopes",
"dapui_stacks",
"dapui_watches",
"dapui_repl",
"LspTrouble",
"qf",
"help",
},
buftypes = { "terminal" },
bufnames = {},
},
disable = {
filetypes = {
"dashboard",
"startify",
},
},
})