feat(cpicker): add xyz color space

bundle/cpicker.nvim/lua/cpicker.lua

@@ -133,7 +133,9 @@ M.picker = function(formats)
     vim.api.nvim_set_option_value('buftype', 'nofile', {
       buf = bufnr,
     })
-    vim.api.nvim_set_option_value('filetype', 'spacevim_cpicker', {
+    -- use set syntax instead of filetype
+    -- if using filetype, when open cpicker first time the SpaceVimPickerCode syntax is cleared
+    vim.api.nvim_set_option_value('syntax', 'spacevim_cpicker', {
       buf = bufnr,
     })
     vim.api.nvim_set_option_value('bufhidden', 'wipe', {

bundle/cpicker.nvim/lua/cpicker/formats/rgb.lua

@@ -44,48 +44,30 @@ function M.color_code()
   return '   =========' .. '  ' .. color.rgb2hex(red, green, blue)
 end
 
-local function increase(c)
-  if c <= 1 - 1 / 255 then
-    c = c + 1 / 255
-  elseif c < 1 then
-    c = 1
-  end
-  return c
-end
-
-local function reduce(c)
-  if c >= 1 / 255 then
-    c = c - 1 / 255
-  elseif c > 0 then
-    c = 0
-  end
-  return c
-end
-
 local function increase_rgb_red()
-  red = increase(red)
+  red = util.increase(red, 255)
   return on_change_argv()
 end
 local function reduce_rgb_red()
-  red = reduce(red)
+  red = util.reduce(red, 255)
   return on_change_argv()
 end
 local function increase_rgb_green()
-  green = increase(green)
+  green = util.increase(green, 255)
   return on_change_argv()
 end
 local function reduce_rgb_green()
-  green = reduce(green)
+  green = util.reduce(green, 255)
   return on_change_argv()
 end
 
 local function increase_rgb_blue()
-  blue = increase(blue)
+  blue = util.increase(blue, 255)
   return on_change_argv()
 end
 
 local function reduce_rgb_blue()
-  blue = reduce(blue)
+  blue = util.reduce(blue, 255)
   return on_change_argv()
 end
 function M.increase_reduce_functions()

bundle/cpicker.nvim/lua/cpicker/formats/xyz.lua

@@ -0,0 +1,92 @@
+--=============================================================================
+-- xyz.lua ---
+-- Copyright (c) 2019-2024 Wang Shidong & Contributors
+-- Author: Wang Shidong < wsdjeg@outlook.com >
+-- URL: https://spacevim.org
+-- License: GPLv3
+--=============================================================================
+local M = {}
+
+local color = require('spacevim.api.color')
+local util = require('cpicker.util')
+
+local x = 0
+local y = 0
+local z = 0
+
+M.color_code_regex = [[\scolor(xyz,\s\d\+%,\s\d\+%,\s\d\+%)]]
+
+local function on_change_argv()
+  return 'xyz', { x, y, z }
+end
+
+function M.buf_text()
+  local rst = {}
+  local h_bar = util.generate_bar(x, '+')
+  local s_bar = util.generate_bar(y, '+')
+  local l_bar = util.generate_bar(z, '+')
+  table.insert(
+    rst,
+    'XYZ:    X:    ' .. string.format('%3s', math.floor(x * 100 + 0.5)) .. '% ' .. h_bar
+  )
+  table.insert(
+    rst,
+    '        Y:    ' .. string.format('%3s', math.floor(y * 100 + 0.5)) .. '% ' .. s_bar
+  )
+  table.insert(
+    rst,
+    '        Z:    ' .. string.format('%3s', math.floor(z * 100 + 0.5)) .. '% ' .. l_bar
+  )
+  return rst
+end
+
+function M.color_code()
+  return
+    '   =========' .. string.format(
+    '  color(xyz, %s%%, %s%%, %s%%)',
+    math.floor(x * 100 + 0.5),
+    math.floor(y * 100 + 0.5),
+    math.floor(z * 100 + 0.5)
+  )
+end
+local function increase_x()
+  x = util.increase(x)
+  return on_change_argv()
+end
+local function reduce_x()
+  x = util.reduce(x)
+  return on_change_argv()
+end
+local function increase_y()
+  y = util.increase(y)
+  return on_change_argv()
+end
+local function reduce_y()
+  y = util.reduce(y)
+  return on_change_argv()
+end
+local function increase_z()
+  z = util.increase(z)
+  return on_change_argv()
+end
+local function reduce_z()
+  z = util.reduce(z)
+  return on_change_argv()
+end
+function M.increase_reduce_functions()
+  return {
+    { increase_x, reduce_x },
+    { increase_y, reduce_y },
+    { increase_z, reduce_z },
+  }
+end
+
+function M.on_change(f, code)
+  if f == 'xyz' then
+    x, y, z = unpack(code)
+    return
+  end
+  x, y, z = color[f .. '2xyz'](unpack(code))
+end
+
+return M

bundle/cpicker.nvim/lua/cpicker/util.lua

@@ -22,6 +22,37 @@ function M.get_hsl_l(hex)
   local _, _, l = color.rgb2hsl(color.hex2rgb(hex))
   return l
 end
+
+function M.increase(v, step, min, max)
+  step = step or 100
+  min = min or 0
+  max = max or 1
+  local sep = (max - min) / step
+  v = (math.floor(v / sep + 0.5) + 1) * sep
+  if v >= max then
+    return max
+  elseif v <= min then
+    return min
+  else
+    return v
+  end
+end
+
+function M.reduce(v, step, min, max)
+  step = step or 100
+  min = min or 0
+  max = max or 1
+  local sep = (max - min) / step
+  v = (math.floor(v / sep + 0.5) - 1) * sep
+  if v >= max then
+    return max
+  elseif v <= min then
+    return min
+  else
+    return v
+  end
+end
+
 function M.update_color_code_syntax(r)
   local max = 0
   local regexes = {}

lua/spacevim/api/color.lua

@@ -384,6 +384,40 @@ function color.xyz2linear(x, y, z)
   return product(xyz2linear, { x, y, z })
 end
 
+function color.rgb2xyz(r, g, b)
+  return color.linear2xyz(color.rgb2linear(r, g, b))
+end
+function color.xyz2rgb(x, y, z)
+  return color.linear2rgb(color.xyz2linear(x, y, z))
+end
+function color.xyz2hex(x, y, z)
+  return color.rgb2hex(color.xyz2rgb(x, y, z))
+end
+function color.xyz2hsv(x, y, z)
+  return color.rgb2hsv(color.xyz2rgb(x, y, z))
+end
+function color.hsv2xyz(h, s, v)
+  return color.rgb2xyz(color.hsv2rgb(h, s, v))
+end
+function color.xyz2hsl(x, y, z)
+  return color.rgb2hsl(color.xyz2rgb(x, y, z))
+end
+function color.hsl2xyz(h, s, l)
+  return color.rgb2xyz(color.hsl2rgb(h, s, l))
+end
+function color.xyz2cmyk(x, y, z)
+  return color.rgb2cmyk(color.xyz2rgb(x, y, z))
+end
+function color.cmyk2xyz(c, m, y, k)
+  return color.rgb2xyz(color.cmyk2rgb(c, m, y, k))
+end
+function color.xyz2hwb(x, y, z)
+  return color.rgb2hwb(color.xyz2rgb(x, y, z))
+end
+function color.hwb2xyz(h, w, b)
+  return color.rgb2xyz(color.hwb2rgb(h, w, b))
+end
+
 --------------------------------------------------------------------------------
 -- Lab color space
 --------------------------------------------------------------------------------