farout.nvim/lua/tokyonight/util.lua

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2021-04-17 19:22:55 +00:00
local util = {}
local function luma(hex_str, lum)
-- Hex to RGB
-- normalise
local hex = "[abcdef0-9][abcdef0-9]"
local pat = "^#(" .. hex .. ")(" .. hex .. ")(" .. hex .. ")$"
hex_str = string.lower(hex_str)
assert(string.find(hex_str, pat) ~= nil, "hex_to_rgb: invalid hex_str: " .. tostring(hex_str))
local r, g, b = string.match(hex_str, pat)
lum = lum or 0;
local lumac = function(c)
c = tonumber(c, 16)
return math.floor(math.min(math.max(0, c + (c * lum / 100)), 255) + .5)
end
return string.format("#%02X%02X%02X", lumac(r), lumac(g), lumac(b))
end
function util.darken(hex, amount) return luma(hex, -math.abs(amount)) end
function util.lighten(hex, amount) return luma(hex, math.abs(amount)) end
function util.highlight(group, color)
local style = color.style and "gui=" .. color.style or "gui=NONE"
local fg = color.fg and "guifg=" .. color.fg or "guifg=NONE"
local bg = color.bg and "guibg=" .. color.bg or "guibg=NONE"
local sp = color.sp and "guisp=" .. color.sp or ""
vim.cmd("highlight " .. group .. " " .. style .. " " .. fg .. " " .. bg .. " " .. sp)
end
function util.syntax(syntax) for group, colors in pairs(syntax) do util.highlight(group, colors) end end
---@param colors ColorScheme
function util.terminal(colors)
vim.g.terminal_color_0 = colors.bg
vim.g.terminal_color_1 = colors.red
vim.g.terminal_color_2 = colors.green
vim.g.terminal_color_3 = colors.orange
vim.g.terminal_color_4 = colors.blue
vim.g.terminal_color_5 = colors.magenta
vim.g.terminal_color_6 = colors.cyan
vim.g.terminal_color_7 = colors.dark5
vim.g.terminal_color_8 = colors.dark2
vim.g.terminal_color_9 = colors.red
vim.g.terminal_color_10 = colors.green
vim.g.terminal_color_11 = colors.orange
vim.g.terminal_color_12 = colors.blue
vim.g.terminal_color_13 = colors.magenta
vim.g.terminal_color_14 = colors.cyan
vim.g.terminal_color_15 = colors.fg
end
---@param theme Theme
function util.load(theme)
vim.cmd("hi clear")
if vim.fn.exists("syntax_on") then vim.cmd("syntax reset") end
vim.o.background = "dark"
vim.o.termguicolors = true
vim.g.colors_name = "tokyonight"
-- load base theme
util.syntax(theme.base)
-- load syntax for plugins and terminal async
local async
async = vim.loop.new_async(vim.schedule_wrap(function()
util.terminal(theme.colors)
util.syntax(theme.plugins)
async:close()
end))
async:send()
end
return util