inital commit

lua/tokyonight/util.lua

@@ -0,0 +1,80 @@
+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
+