Use hsl to define colors. Add a bunch of groups

lua/dieter/hsl.lua

@@ -0,0 +1,71 @@
+-- https://github.com/EmmanuelOga/columns/blob/master/utils/color.lua
+
+local M = {}
+
+--- Converts an HSL color value to RGB. Conversion formula
+--- adapted from http://en.wikipedia.org/wiki/HSL_color_space.
+--- Assumes h, s, and l are contained in the set [0, 1] and
+--- returns r, g, and b in the set [0, 255].
+---
+--- @param h number      The hue
+--- @param s number      The saturation
+--- @param l number      The lightness
+--- @return number, number, number     # The RGB representation
+function M.hslToRgb(h, s, l)
+  --- @type number, number, number
+  local r, g, b
+
+  if s == 0 then
+    r, g, b = l, l, l -- achromatic
+  else
+    --- @param p number
+    --- @param q number
+    --- @param t number
+    local function hue2rgb(p, q, t)
+      if t < 0 then
+        t = t + 1
+      end
+      if t > 1 then
+        t = t - 1
+      end
+      if t < 1 / 6 then
+        return p + (q - p) * 6 * t
+      end
+      if t < 1 / 2 then
+        return q
+      end
+      if t < 2 / 3 then
+        return p + (q - p) * (2 / 3 - t) * 6
+      end
+      return p
+    end
+
+    --- @type number
+    local q
+    if l < 0.5 then
+      q = l * (1 + s)
+    else
+      q = l + s - l * s
+    end
+    local p = 2 * l - q
+
+    r = hue2rgb(p, q, h + 1 / 3)
+    g = hue2rgb(p, q, h)
+    b = hue2rgb(p, q, h - 1 / 3)
+  end
+
+  return r * 255, g * 255, b * 255
+end
+
+--- Converts an HSL color value to RGB in Hex representation.
+--- @param  h number   The hue
+--- @param  s number   The saturation
+--- @param  l number   The lightness
+--- @return   string   # The hex representation
+function M.hslToHex(h, s, l)
+  local r, g, b = M.hslToRgb(h / 360, s / 100, l / 100)
+
+  return string.format("#%02x%02x%02x", r, g, b)
+end
+
+return M

lua/dieter/init.lua

@@ -7,21 +7,37 @@ local colors = {
 		intense = "#000000",
 		primary = "#ff0000",
 		secondary = "#00ff00",
-		diagnostic_error = "#ff0038",
-		diagnostic_warning = "#ffcc00",
-		diagnostic_info = "#47eae0",
-		diagnostic_hint = "#47eae0",
+
+		string = hsl(96, 50, 33),
+
+		comment = hsl(230, 66, 40),
+		comment_error = hsl(2, 85, 40),
+
+		diagnostic_error = hsl(347, 80, 45),
+		diagnostic_warning = hsl(30, 100, 50),
+		diagnostic_info = hsl(145, 80, 30),
+		diagnostic_hint = hsl(145, 80, 30),
+
 		diff_add = "#00ff77",
 		diff_change = "#47eae0",
 		diff_delete = "#ff0038",
 
-		add = hsl(84, 75, 67),
+		popup_error_bg = hsl(0, 90, 99),
+		popup_warning_bg = hsl(27, 90, 99),
+		popup_info_bg = hsl(112, 90, 99),
+		popup_hint_bg = hsl(112, 90, 99),
+
+		add = hsl(84, 50, 80),
 		add_quarter = hsl(84, 80, 95),
-		change = hsl(41, 50, 75),
+		change = hsl(41, 80, 80),
 		change_quarter = hsl(224, 100, 85),
 		delete = hsl(350, 100, 40),
 		delete_quarter = hsl(350, 100, 85),
 
+		dialog_bg = hsl(224, 5, 92),
+
+		selection = hsl(270, 75, 92),
+
 		highlight_subtle = "#f0f0f0",
 		dimmed = "#cccccc",
 	},
@@ -47,15 +63,24 @@ local colors = {
 local c = colors[vim.o.background]
 
 local theme = {
-	Constant = { link = "Normal" },
-	Delimiter = { link = "Normal" },
-	Identifier = { link = "Normal" },
 	Normal = { fg = c.foreground, bg = c.background },
+
+	Constant = { link = "NormalNC" },
+	Delimiter = { link = "NormalNC" },
+	Identifier = { link = "NormalNC" },
 	Keyword = { fg = c.foreground, bold = true },
-	Operator = { link = "Normal" },
-	Special = { link = "Normal" },
-	String = { link = "Normal" },
-	Type = { link = "Normal" },
+	Operator = { link = "NormalNC" },
+	Special = { link = "NormalNC" },
+	Type = { link = "NormalNC" },
+
+	String = { fg = c.string },
+
+	Comment = { fg = c.comment, italic = true, bold = true },
+	CommentError = { fg = c.comment_error, italic = true, bold = true },
+	["@comment.note"] = { link = "Comment" },
+	["@comment.todo"] = { link = "CommentError" },
+	["@comment.error"] = { link = "CommentError" },
+	["@comment.warning"] = { link = "CommentError" },
 
 	DiffAdd = { fg = c.add, bg = c.add_quarter },
 	GitSignsAdd = { fg = c.add, bg = c.background },
@@ -68,12 +93,20 @@ local theme = {
 	GitSignsDeleteNr = { link = "DiffDelete" },
 
 	-- Treesitter
-	["@function"] = { link = "Normal" },
-	["@special"] = { link = "Normal" },
-	["@variable"] = { link = "Normal" },
+	["@function"] = { link = "NormalNC" },
+	["@special"] = { link = "NormalNC" },
+	["@variable"] = { link = "NormalNC" },
 
 	-- UI Elements
 	CursorLine = { bg = c.highlight_subtle },
+
+	DiagnosticError = { fg = c.diagnostic_error, italic = true },
+	DiagnosticUnderlineError = { fg = c.diagnostic_error, undercurl = true },
+	DiagnosticFloatingError = { fg = c.diagnostic_error, bg = c.popup_error_bg },
+	DiagnosticFloatingWarn = { fg = c.diagnostic_warning, bg = c.popup_warning_bg },
+	DiagnosticFloatingInfo = { fg = c.diagnostic_info, bg = c.popup_info_bg },
+	DiagnosticFloatingHint = { fg = c.diagnostic_hint, bg = c.popup_hint_bg },
+
 	DiagnosticSignError = { fg = c.diagnostic_error },
 	DiagnosticSignHint = { fg = c.diagnostic_hint },
 	DiagnosticSignInfo = { fg = c.diagnostic_info },
@@ -83,8 +116,19 @@ local theme = {
 	IndentLineCurrent = { fg = c.dimmed },
 	TreesitterContext = { reverse = true },
 	TreesitterContextLineNumber = { bg = c.dimmed, reverse = true, italic = true },
-	InclineNormal = { bg = "bg" },
-	InclineNormalNC = { bg = "bg" },
+	InclineNormal = { bg = c.background },
+	InclineNormalNC = { bg = c.background },
+
+	WinSeparator = { bg = c.dialog_bg },
+	NormalFloat = { bg = c.dialog_bg },
+	Title = { fg = c.foreground, bold = true },
+
+	TelescopeNormal = { fg = c.foreground, bg = c.background },
+	TelescopeBorder = { bold = true },
+	TelescopeSelection = { reverse = true },
+	TelescopeResultsComment = { fg = c.foreground, italic = true },
+
+	Visual = { bg = c.selection },
 }
 
 vim.cmd("hi clear")