nvim: support different dark and light colorschemes

nvim/.config/nvim/lazy-lock.json

@@ -32,6 +32,7 @@
   "melange-nvim": { "branch": "master", "commit": "2db5407f2f6d6d6286f50f2f7365728d66f6f3ae" },
   "mellifluous.nvim": { "branch": "v1", "commit": "1637e46585435ebda7963248e0e65422effad8d9" },
   "mini.nvim": { "branch": "main", "commit": "0420076298c4457f200c2de468f65d080597a347" },
+  "nano-theme.nvim": { "branch": "main", "commit": "0b1158c4911f4bd9d5a1e2e7669ebff893435b64" },
   "neodev.nvim": { "branch": "main", "commit": "46aa467dca16cf3dfe27098042402066d2ae242d" },
   "neogit": { "branch": "master", "commit": "6d1bd94f7fca92a50a892f494920696b5defa8c8" },
   "nordic.nvim": { "branch": "main", "commit": "8627750ece357e9670f9e69853091f7fbb8d6523" },

nvim/.config/nvim/lua/lupan/remap.lua

@@ -113,10 +113,4 @@ vim.keymap.set("n", "<leader>ss", "<cmd>source ~/.config/nvim/after/plugin/luasn
 
 -- colors
 
-key('n', '<F6>', function()
-  if vim.o.background == "dark" then
-    vim.o.background = "light"
-  else
-    vim.o.background = "dark"
-  end
-end)
+key('n', '<F6>', function() require('lupan.utils').toggle_color_scheme() end, { desc = 'Toggle background' })

nvim/.config/nvim/lua/lupan/utils.lua

@@ -2,6 +2,12 @@ local M = {}
 
 local filename = os.getenv('HOME') .. '/.config/alacritty/alacritty.toml'
 
+local colorschemes = nil
+
+function M.set_color_schemes(dark, light)
+  colorschemes = { dark = dark, light = light }
+end
+
 function M.terminalbg()
   local ok, lines = pcall(io.lines, filename)
   if ok then
@@ -14,11 +20,29 @@ function M.terminalbg()
   return "dark"
 end
 
+function M.update_color_scheme()
+  vim.o.background = M.terminalbg()
+  if colorschemes then
+    vim.cmd.colorscheme(colorschemes[vim.o.background])
+  end
+end
+
+function M.toggle_color_scheme()
+  if vim.o.background == "dark" then
+    vim.o.background = "light"
+  else
+    vim.o.background = "dark"
+  end
+  if colorschemes then
+    vim.cmd.colorscheme(colorschemes[vim.o.background])
+  end
+end
+
 local w = vim.uv.new_fs_event()
 
 local function watch(fname)
   w:start(filename, {}, vim.schedule_wrap(function(...)
-    vim.o.background = M.terminalbg()
+    M.update_color_scheme()
     w:stop()
     watch(fname)
   end))

nvim/.config/nvim/lua/plugins/appearance.lua

@@ -11,9 +11,23 @@ return {
   },
   {
     "savq/melange-nvim",
+  },
+  {
+    'ronisbr/nano-theme.nvim',
     config = function()
-      vim.o.background = require('lupan.utils').terminalbg()
-      vim.cmd.colorscheme('melange')
+      local nano = require('nano-theme.colors')
+      local nano_get = nano.get
+      function nano.get()
+        local t = nano_get()
+        local light = vim.o.background == 'light'
+        if not light then
+          t.nano_strong.fg = '#ECEFF4'
+        end
+        return t
+      end
+
+      require('lupan.utils').set_color_schemes('nano-theme', 'nano-theme')
+      require('lupan.utils').update_color_scheme()
     end
   },
   {

nvim/.config/nvim/lua/plugins/rabbit.lua

@@ -18,7 +18,7 @@ return {
       harpoon = { switch = 'f' },
     },
     colors = {
-      file = '#5a418a',
+      file = '#EBCB8B',
     },
   },
   keys = {