feat: introduce colorblind mode (#15)

Co-authored-by: Isrothy <isrothy@gmail.com>
gbprod · Jan 26, 2023 · 72529f6 · 72529f6
1 parent 4f53335
commit 72529f6
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Showing 20 changed files with 321 additions and 17 deletions.
diff --git a/README.md b/README.md
@@ -102,6 +102,18 @@ require("nord").setup({
     },
   },
 
+  -- colorblind mode
+  -- see https://github.com/EdenEast/nightfox.nvim#colorblind
+  -- simulation mode has not been implemented yet.
+  colorblind = {
+    enable = false,
+    severity = {
+      protan = 0.0,
+      deutan = 0.0,
+      tritan = 0.0,
+    },
+  }
+
   --- You can override specific highlights to use other groups or a hex color
   --- function will be called with all highlights and the colorScheme table
   on_highlights = function(highlights, colors) end,
@@ -152,3 +164,4 @@ require("bufferline").setup({
   his years of good and loyal service.
 - [folke/tokyonight.nvim](https://github.com/folke/tokyonight.nvim): For a lot
   of code inspiration.
+- [EdenEast/nightfox.nvim](https://github.com/EdenEast/nightfox.nvim#colorblind): For daltonization algorithm
diff --git a/lua/lualine/themes/nord.lua b/lua/lualine/themes/nord.lua
@@ -1,4 +1,4 @@
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 local nord = {}
 

diff --git a/lua/nord/colors.lua b/lua/nord/colors.lua
@@ -1,4 +1,6 @@
-return {
+local colors = {}
+
+local defaults = {
   polar_night = {
     origin = "#2E3440", -- nord0
     bright = "#3B4252", -- nord1
@@ -26,3 +28,40 @@ return {
   },
   none = "NONE",
 }
+
+colors.palette = defaults
+
+function colors.daltonize(severity)
+  local daltonize = require("nord.utils.colorblind").daltonize
+
+  colors.palette = {
+    polar_night = {
+      origin = daltonize(defaults.polar_night.origin, severity),
+      bright = daltonize(defaults.polar_night.bright, severity),
+      brighter = daltonize(defaults.polar_night.brighter, severity),
+      brightest = daltonize(defaults.polar_night.brightest, severity),
+      light = daltonize(defaults.polar_night.light, severity),
+    },
+    snow_storm = {
+      origin = daltonize(defaults.snow_storm.origin, severity),
+      brighter = daltonize(defaults.snow_storm.brighter, severity),
+      brightest = daltonize(defaults.snow_storm.brightest, severity),
+    },
+    frost = {
+      polar_water = daltonize(defaults.frost.polar_water, severity),
+      ice = daltonize(defaults.frost.polar_water, severity),
+      artic_water = daltonize(defaults.frost.artic_water, severity),
+      artic_ocean = daltonize(defaults.frost.artic_ocean, severity),
+    },
+    aurora = {
+      red = daltonize(defaults.aurora.red, severity),
+      orange = daltonize(defaults.aurora.orange, severity),
+      yellow = daltonize(defaults.aurora.yellow, severity),
+      green = daltonize(defaults.aurora.green, severity),
+      purple = daltonize(defaults.aurora.purple, severity),
+    },
+    none = "NONE",
+  }
+end
+
+return colors
diff --git a/lua/nord/config.lua b/lua/nord/config.lua
@@ -22,6 +22,14 @@ local defaults = {
       modified = { italic = true },
     },
   },
+  colorblind = {
+    enable = false,
+    severity = {
+      protan = 0,
+      deutan = 0,
+      tritan = 0,
+    },
+  },
   --- You can override specific highlights to use other groups or a hex color
   on_highlights = function(highlights, colors) end,
 }

diff --git a/lua/nord/defaults.lua b/lua/nord/defaults.lua
@@ -1,4 +1,4 @@
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 local utils = require("nord.utils")
 
 local defaluts = {}

diff --git a/lua/nord/init.lua b/lua/nord/init.lua
@@ -8,6 +8,10 @@ function nord.load(opts)
     require("nord.config").extend(opts)
   end
 
+  if config.options.colorblind.enable then
+    require("nord.colors").daltonize(config.options.colorblind.severity)
+  end
+
   vim.cmd([[ highlight clear ]])
 
   if config.options.terminal_colors then

diff --git a/lua/nord/lsp.lua b/lua/nord/lsp.lua
@@ -1,7 +1,7 @@
 local utils = require("nord.utils")
 local lsp = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function lsp.highlights()
   return {

diff --git a/lua/nord/plugins/bufferline.lua b/lua/nord/plugins/bufferline.lua
@@ -3,7 +3,7 @@ local config = require("nord.config").options.styles.bufferline
 
 local bufferline = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function bufferline.highlights()
   local current_hi = vim.tbl_extend("force", { bg = c.polar_night.brighter }, config.current)
@@ -47,6 +47,7 @@ function bufferline.highlights()
     BufferInactiveTarget = { bg = c.polar_night.origin, fg = c.aurora.red, bold = true },
     BufferInactiveHINT = { bg = c.polar_night.origin, fg = utils.darken(c.frost.artic_water, 0.4) },
     BufferInactiveINFO = { bg = c.polar_night.origin, fg = utils.darken(c.frost.ice, 0.4) },
+
     BufferInactiveWARN = { bg = c.polar_night.origin, fg = utils.darken(c.aurora.yellow, 0.4) },
     BufferInactiveERROR = { bg = c.polar_night.origin, fg = utils.darken(c.aurora.red, 0.4) },
 

diff --git a/lua/nord/plugins/completion.lua b/lua/nord/plugins/completion.lua
@@ -1,6 +1,6 @@
 local cmp = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function cmp.highlights()
   return {

diff --git a/lua/nord/plugins/filetree.lua b/lua/nord/plugins/filetree.lua
@@ -1,7 +1,7 @@
 local filetree = {}
 
 local config = require("nord.config")
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function filetree.highlights()
   return {

diff --git a/lua/nord/plugins/git.lua b/lua/nord/plugins/git.lua
@@ -1,6 +1,6 @@
 local git = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function git.highlights()
   return {

diff --git a/lua/nord/plugins/motion.lua b/lua/nord/plugins/motion.lua
@@ -1,6 +1,6 @@
 local motion = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function motion.highlights()
   return {

diff --git a/lua/nord/plugins/notify.lua b/lua/nord/plugins/notify.lua
@@ -1,7 +1,7 @@
 local utils = require("nord.utils")
 local notify = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function notify.highlights()
   return {

diff --git a/lua/nord/plugins/picker.lua b/lua/nord/plugins/picker.lua
@@ -1,6 +1,6 @@
 local picker = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function picker.highlights()
   return {

diff --git a/lua/nord/plugins/ui.lua b/lua/nord/plugins/ui.lua
@@ -1,6 +1,6 @@
 local ui = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function ui.highlights()
   return {

diff --git a/lua/nord/syntax.lua b/lua/nord/syntax.lua
@@ -1,4 +1,4 @@
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 local utils = require("nord.utils")
 
 local base = {}

diff --git a/lua/nord/terminal.lua b/lua/nord/terminal.lua
@@ -1,6 +1,6 @@
 local terminal = {}
 
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 
 function terminal.apply()
   -- dark

diff --git a/lua/nord/treesitter.lua b/lua/nord/treesitter.lua
@@ -1,4 +1,4 @@
-local c = require("nord.colors")
+local c = require("nord.colors").palette
 local utils = require("nord.utils")
 
 local treesitter = {}