vim-settings/neovim/lua/_colors.lua

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-- Update colors based on environment variables
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function _G.update_colors()
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local function maybe_set(scope, name, val, force)
force = force or false
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local changed = vim[scope][name] ~= val
if changed or force then
if scope == "g" and name == "colors_name" then
-- Colorscheme is different. Use this instead of setting colors_name directly
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-- Try to set the colorscheme. If not loaded, skip the error
local status, _ = pcall(vim.cmd, "colorscheme " .. val)
if not status then
vim.notify("Failed to set colorscheme to " .. val .. ". Maybe it's not yet loaded")
end
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else
vim[scope][name] = val
end
return changed
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end
return false
end
-- Set colorscheme based on env
local utils = require("utils")
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local default_color = "wombat_lush"
local env_color = utils.env_default("VIM_COLOR", default_color)
env_color = utils.env_default("NVIM_COLOR", env_color)
-- Read dark mode
local mode = utils.env_default("IS_DARKMODE", "dark")
if vim.g.is_mac == 1 then
local cmd = "defaults read -g AppleInterfaceStyle 2>/dev/null || echo Light"
mode = vim.fn.system(cmd):gsub("\n", ""):lower()
end
-- Update background and theme
local change = false
if mode == "dark" then
env_color = utils.env_default("VIM_COLOR_DARK", env_color)
env_color = utils.env_default("NVIM_COLOR_DARK", env_color)
change = maybe_set("o", "background", "dark")
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change = maybe_set("g", "colors_name", env_color, false) or change
elseif mode == "light" then
env_color = utils.env_default("VIM_COLOR_LIGHT", env_color)
env_color = utils.env_default("NVIM_COLOR_LIGHT", env_color)
change = maybe_set("o", "background", "light")
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change = maybe_set("g", "colors_name", env_color, false) or change
end
-- Update status line theme
if change then
if vim.fn.exists(":AirlineRefresh") == 1 then
vim.cmd(":AirlineRefresh")
elseif utils.is_plugin_loaded("lualine.nvim") then
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require("plugins.lualine").config_lualine()
end
end
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return change and "Changed color to " .. env_color .. " with mode " .. mode or "No change"
end
-- Don't need the autocommand when dark-notify is installed
local utils = require("utils")
if not utils.is_plugin_loaded("dark-notify") then
-- TODO: remove check when dropping v0.6.0
if vim.fn.has("nvim-0.7.0") == 1 then
vim.api.nvim_create_autocmd({ "FocusGained" }, {
pattern = "*",
callback = _G.update_colors,
group = vim.api.nvim_create_augroup("auto_colors", { clear = true }),
})
else
utils.autocmd("auto_colors", "FocusGained * call v:lua.update_colors()")
end
end
-- Initial setting of colors
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_G.update_colors()