feat(cpicker): add cmyk color space

autoload/SpaceVim/layers/tools/cpicker.vim

@@ -17,6 +17,9 @@
 "     name = 'tools#cpicker'
 " <
 "
+" @subsection layer options
+" 1. default_spaces: set the default color spaces, the default value is `['rgb', 'hsl']`
+"
 " @subsection Key bindings
 " >
 "   Key             Function
@@ -34,6 +37,13 @@
 "   h/<Left>        reduce
 "   l/<Right>       increase
 " <
+" @subsection commands
+" Instead of using key Binding, this layer also provides a Neovim command `:Cpicker` which can be used in cmdline. For example:
+" >
+"   :Cpicker rgb cmyk
+" <
+
+let s:default_spaces = ['rgb', 'hsl']
 
 function! SpaceVim#layers#tools#cpicker#plugins() abort
 
@@ -45,13 +55,13 @@ endfunction
 
 function! SpaceVim#layers#tools#cpicker#config() abort
 
-  call SpaceVim#mapping#space#def('nnoremap', ['i', 'p', 'c'], 'Cpicker all',
+  call SpaceVim#mapping#space#def('nnoremap', ['i', 'p', 'c'], 'Cpicker ' . join(s:default_spaces, ' '),
         \ 'insert-color-with-picker', 1)
 
 endfunction
 
 function! SpaceVim#layers#tools#cpicker#set_variable(var) abort
-  let g:cpicker_default_format = get(a:var, 'default_format', 'hex')
+  let s:default_spaces = get(a:var, 'default_spaces', s:default_spaces)
 endfunction
 
 function! SpaceVim#layers#tools#cpicker#loadeable() abort

bundle/cpicker.nvim/lua/cpicker.lua

@@ -74,7 +74,7 @@ end
 
 local function copy_color()
   local from, to = vim
-    .regex([[#[0123456789ABCDEF]\+\|rgb(\d\+,\s\d\+,\s\d\+)\|hsl(\d\+,\s\d\+%,\s\d\+%)\|hsv(\d\+,\s\d\+%,\s\d\+%)]])
+    .regex([[#[0123456789ABCDEF]\+\|rgb(\d\+,\s\d\+,\s\d\+)\|hsl(\d\+,\s\d\+%,\s\d\+%)\|hsv(\d\+,\s\d\+%,\s\d\+%)\|cmyk(\d\+%,\s\d\+%,\s\d\+%,\s\d\+%)]])
     :match_str(vim.fn.getline('.'))
   if from then
     vim.fn.setreg('+', string.sub(vim.fn.getline('.'), from, to + 1))

bundle/cpicker.nvim/lua/cpicker/formats/cmyk.lua

@@ -0,0 +1,126 @@
+--=============================================================================
+-- cmyk.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 cyan = 0
+local magenta = 0
+local yellow = 0
+local black = 0
+
+local function on_change_argv()
+  return 'cmyk', { cyan, magenta, yellow, black }
+end
+
+function M.buf_text()
+  local rst = {}
+  local c_bar = util.generate_bar(cyan, '+')
+  local m_bar = util.generate_bar(magenta, '+')
+  local y_bar = util.generate_bar(yellow, '+')
+  local k_bar = util.generate_bar(black, '+')
+  table.insert(rst, 'CMYK: C:    ' .. string.format('%4s', math.floor(cyan * 100 + 0.5)) .. ' ' .. c_bar)
+  table.insert(rst, '      M:    ' .. string.format('%4s', math.floor(magenta * 100 + 0.5)) .. ' ' .. m_bar)
+  table.insert(rst, '      Y:    ' .. string.format('%4s', math.floor(yellow * 100 + 0.5)) .. ' ' .. y_bar)
+  table.insert(rst, '      K:    ' .. string.format('%4s', math.floor(black * 100 + 0.5)) .. ' ' .. k_bar)
+  return rst
+end
+
+function M.color_code()
+  return
+    '   =========' .. string.format(
+    '  cmyk(%s%%, %s%%, %s%%, %s%%)',
+    math.floor(cyan * 100 + 0.5),
+    math.floor(magenta * 100 + 0.5),
+    math.floor(yellow * 100 + 0.5),
+    math.floor(black * 100 + 0.5)
+  )
+end
+
+local function increase_cyan()
+  if cyan <= 0.99 then
+    cyan = cyan + 0.01
+  elseif cyan < 1 then
+    cyan = 1
+  end
+  return on_change_argv()
+end
+local function reduce_cyan()
+  if cyan > 0.01 then
+    cyan = cyan - 0.01
+  elseif cyan > 0 then
+    cyan = 0
+  end
+  return on_change_argv()
+end
+local function increase_magenta()
+  if magenta <= 0.99 then
+    magenta = magenta + 0.01
+  elseif magenta < 1 then
+    magenta = 1
+  end
+  return on_change_argv()
+end
+local function reduce_magenta()
+  if magenta > 0.01 then
+    magenta = magenta - 0.01
+  elseif magenta > 0 then
+    magenta = 0
+  end
+  return on_change_argv()
+end
+local function increase_yellow()
+  if yellow <= 0.99 then
+    yellow = yellow + 0.01
+  elseif yellow < 1 then
+    yellow = 1
+  end
+  return on_change_argv()
+end
+local function reduce_yellow()
+  if yellow > 0.01 then
+    yellow = yellow - 0.01
+  elseif yellow > 0 then
+    yellow = 0
+  end
+  return on_change_argv()
+end
+local function increase_black()
+  if black <= 0.99 then
+    black = black + 0.01
+  elseif black < 1 then
+    black = 1
+  end
+  return on_change_argv()
+end
+local function reduce_black()
+  if black > 0.01 then
+    black = black - 0.01
+  elseif black > 0 then
+    black = 0
+  end
+  return on_change_argv()
+end
+function M.increase_reduce_functions()
+  return {
+    { increase_cyan, reduce_cyan },
+    { increase_magenta, reduce_magenta },
+    { increase_yellow, reduce_yellow },
+    { increase_black, reduce_black },
+  }
+end
+
+function M.on_change(f, code)
+  if f == 'cmyk' then
+    return
+  end
+  cyan, magenta, yellow, black = color[f .. '2cmyk'](unpack(code))
+end
+
+return M

bundle/cpicker.nvim/lua/cpicker/formats/hsl.lua

@@ -21,8 +21,8 @@ end
 function M.buf_text()
   local rst = {}
   local h_bar = util.generate_bar(hue, '+', 360)
-  local s_bar = util.generate_bar(saturation, '+', 1)
+  local s_bar = util.generate_bar(saturation, '+')
-  local l_bar = util.generate_bar(lightness, '+', 1)
+  local l_bar = util.generate_bar(lightness, '+')
   table.insert(rst, 'HSL:  H:    ' .. string.format('%4s', math.floor(hue + 0.5)) .. ' ' .. h_bar)
   table.insert(
     rst,
@@ -46,8 +46,10 @@ function M.color_code()
 end
 
 local function increase_hsl_h()
-  if hue < 360 then
+  if hue <= 359 then
     hue = hue + 1
+  elseif hue < 360 then
+    hue = 360
   end
   return on_change_argv()
 end

bundle/cpicker.nvim/lua/cpicker/formats/hsv.lua

@@ -22,8 +22,8 @@ function M.buf_text()
   
   local rst = {}
   local h_bar = util.generate_bar(hue, '+', 360)
-  local s_bar = util.generate_bar(saturation, '+', 1)
+  local s_bar = util.generate_bar(saturation, '+')
-  local l_bar = util.generate_bar(value, '+', 1)
+  local l_bar = util.generate_bar(value, '+')
   table.insert(rst, 'HSV:  H:    ' .. string.format('%4s', math.floor(hue + 0.5)) .. ' ' .. h_bar)
   table.insert(
     rst,
@@ -47,8 +47,9 @@ function M.color_code()
   
 end
 local function increase_hsl_h()
-  if hue < 360 then
+  if hue <= 359 then
     hue = hue + 1
+  elseif hue < 360 then hue = 360
   end
   return on_change_argv()
 end

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

@@ -10,9 +10,9 @@ local M = {}
 local color = require('spacevim.api.color')
 local util = require('cpicker.util')
 
-local red = 0 -- [0, 255]
+local red = 0 -- [0, 1]
-local green = 0 -- [0, 255]
+local green = 0 -- [0, 1]
-local blue = 0 -- [0, 255]
+local blue = 0 -- [0, 1]
 
 local function on_change_argv()
   return 'rgb', { red, green, blue }
@@ -23,9 +23,18 @@ function M.buf_text()
   local r_bar = util.generate_bar(red, '+')
   local g_bar = util.generate_bar(green, '+')
   local b_bar = util.generate_bar(blue, '+')
-  table.insert(rst, 'RGB:  R:    ' .. string.format('%4s', red) .. ' ' .. r_bar)
+  table.insert(
-  table.insert(rst, '      G:    ' .. string.format('%4s', green) .. ' ' .. g_bar)
+    rst,
-  table.insert(rst, '      B:    ' .. string.format('%4s', blue) .. ' ' .. b_bar)
+    'RGB:  R:    ' .. string.format('%4s', math.floor(red * 255 + 0.5)) .. ' ' .. r_bar
+  )
+  table.insert(
+    rst,
+    '      G:    ' .. string.format('%4s', math.floor(green * 255 + 0.5)) .. ' ' .. g_bar
+  )
+  table.insert(
+    rst,
+    '      B:    ' .. string.format('%4s', math.floor(blue * 255 + 0.5)) .. ' ' .. b_bar
+  )
   return rst
 end
 
@@ -33,42 +42,48 @@ function M.color_code()
   return '   =========' .. '  ' .. color.rgb2hex(red, green, blue)
 end
 
-local function increase_rgb_red()
+local function increase(c)
-  if red < 255 then
+  if c <= 1 - 1 / 255 then
-    red = red + 1
+    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)
   return on_change_argv()
 end
 local function reduce_rgb_red()
-  if red > 0 then
+  red = reduce(red)
-    red = red - 1
-  end
   return on_change_argv()
 end
 local function increase_rgb_green()
-  if green < 255 then
+  green = increase(green)
-    green = green + 1
-  end
   return on_change_argv()
 end
 local function reduce_rgb_green()
-  if green > 0 then
+  green = reduce(green)
-    green = green - 1
-  end
   return on_change_argv()
 end
 
 local function increase_rgb_blue()
-  if blue < 255 then
+  blue = increase(blue)
-    blue = blue + 1
-  end
   return on_change_argv()
 end
 
 local function reduce_rgb_blue()
-  if blue > 0 then
+  blue = reduce(blue)
-    blue = blue - 1
-  end
   return on_change_argv()
 end
 function M.increase_reduce_functions()

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

@@ -12,7 +12,7 @@ local M = {}
 local color = require('spacevim.api.color')
 
 function M.generate_bar(n, char, m)
-  return string.rep(char, math.floor(24 * n / (m or 255)))
+  return string.rep(char, math.floor(24 * n / (m or 1)))
 end
 
 function M.get_hex_code(t, code)

bundle/cpicker.nvim/syntax/spacevim_cpicker.vim

@@ -5,7 +5,7 @@ let b:current_syntax = 'spacevim_cpicker'
 syntax case ignore
 
 syn match ProcessBar /[?=+]\+/
-syn match SpaceVimPickerCode /#[0123456789ABCDEF]\+\|rgb(\d\+,\s\d\+,\s\d\+)\|hsl(\d\+,\s\d\+%,\s\d\+%)\|hsv(\d\+,\s\d\+%,\s\d\+%)/
+syn match SpaceVimPickerCode /#[0123456789ABCDEF]\+\|rgb(\d\+,\s\d\+,\s\d\+)\|hsl(\d\+,\s\d\+%,\s\d\+%)\|hsv(\d\+,\s\d\+%,\s\d\+%)\|cmyk(\d\+%,\s\d\+%,\s\d\+%,\s\d\+%)/
 syn match SpaceVimPickerBackground /=\+/
 
 highlight ProcessBar ctermfg=Gray ctermbg=Gray guifg=Gray guibg=Gray

doc/SpaceVim.txt

@@ -6302,6 +6302,10 @@ configuration file.
     name = 'tools#cpicker'
 <
 
+LAYER OPTIONS
+  1. default_spaces: set the default color spaces, the default value is
+    `['rgb', 'hsl']`
+
 KEY BINDINGS
 
 >
@@ -6320,6 +6324,12 @@ Key bindings in cpicker:
   h/<Left>        reduce
   l/<Right>       increase
 <
+COMMANDS
+Instead of using key Binding, this layer also provides a Neovim command
+`:Cpicker` which can be used in cmdline. For example:
+>
+  :Cpicker rgb cmyk
+<
 
 ==============================================================================
 TOOLS#DASH                                        *SpaceVim-layers-tools-dash*

docs/layers/tools/cpicker.md

@@ -9,7 +9,9 @@ description: "This layer provides color picker for SpaceVim"
 
 - [Description](#description)
 - [Install](#install)
+- [Layer options](#layer-options)
 - [Key bindings](#key-bindings)
+- [Commands](#commands)
 
 <!-- vim-markdown-toc -->
 
@@ -26,8 +28,20 @@ To use this configuration layer, add it to your `~/.SpaceVim.d/init.toml`.
 name = "tools#cpicker"
 ```
 
+## Layer options
+
+1. default_spaces: set the default color spaces, the default value is `['rgb', 'hsl']`. Available spaces: rgb, hsl, hsv, cmyk.
+
 ## Key bindings
 
 | Key Binding | Description       |
 | ----------- | ----------------- |
 | `SPC i p c` | open color picker |
+
+## Commands
+
+Instead of using key Binding, this layer also provides a Neovim command `:Cpicker` which can be used in cmdline. For example:
+
+```
+:Cpicker rgb cmyk
+```

lua/spacevim/api/color.lua

@@ -11,9 +11,6 @@ local color = {}
 -- 参考： https://blog.csdn.net/Sunshine_in_Moon/article/details/45131285
 
 color.rgb2hsl = function(r, g, b)
-  r = r / 255
-  g = g / 255
-  b = b / 255
   local max = math.max(r, g, b)
   local min = math.min(r, g, b)
   local h, s, l
@@ -39,7 +36,7 @@ color.rgb2hsl = function(r, g, b)
     s = (max - min) / (2 - 2 * l)
   end
 
-  return math.floor(h), s, l
+  return h, s, l
 end
 
 -- https://stackoverflow.com/questions/68317097/how-to-properly-convert-hsl-colors-to-rgb-colors-in-lua
@@ -78,16 +75,35 @@ color.hsl2rgb = function(h, s, l)
     b = hue2rgb(p, q, h - 1 / 3)
   end
 
-  return math.floor(r * 255 + 0.5), math.floor(g * 255 + 0.5), math.floor(b * 255 + 0.5)
+  return r, g, b
+end
+
+-- https://www.rapidtables.com/convert/color/rgb-to-cmyk.html
+
+color.rgb2cmyk = function(r, g, b)
+  local c, m, y, k
+  k = 1 - math.max(r, g, b)
+  if k ~= 1 then
+  c = (1 - r - k) / (1 - k)
+  m = (1 - g - k) / (1 - k)
+  y = (1 - b - k) / (1 - k)
+  else
+    c, m, y = 0, 0, 0
+  end
+  return c, m, y, k
+end
+
+color.cmyk2rgb = function(c, m, y, k)
+  local r, g, b
+  r = (1 - c) * (1 - k)
+  g = (1 - m) * (1 - k)
+  b = (1 - y) * (1 - k)
+  return r, g, b
 end
 
 -- https://www.rapidtables.com/convert/color/rgb-to-hsv.html
 
 color.rgb2hsv = function(r, g, b)
-  r = r / 255
-  g = g / 255
-  b = b / 255
-
   local cmax = math.max(r, g, b)
   local cmin = math.min(r, g, b)
   local d = cmax - cmin
@@ -112,7 +128,7 @@ color.rgb2hsv = function(r, g, b)
 
   v = cmax
 
-  return math.floor(h), s, v
+  return h, s, v
 end
 
 -- https://www.rapidtables.com/convert/color/hsv-to-rgb.html
@@ -136,7 +152,7 @@ color.hsv2rgb = function(h, s, v)
     r, g, b = c, 0, x
   end
   r, g, b = (r + m), (g + m), (b + m)
-  return math.floor(r * 255 + 0.5), math.floor(g * 255 + 0.5), math.floor(b * 255 + 0.5)
+  return r, g, b
 end
 color.hsv2hsl = function(h, s, v)
   return color.rgb2hsl(color.hsv2rgb(h, s, v))
@@ -144,6 +160,19 @@ end
 color.hsl2hsv = function(h, s, l)
   return color.rgb2hsv(color.hsl2rgb(h, s, l))
 end
+color.hsl2cmyk = function (h, s, l)
+  return color.rgb2cmyk(color.hsl2rgb(h, s, l))
+end
+color.hsv2cmyk = function (h, s, v)
+  return color.rgb2cmyk(color.hsv2rgb(h, s, v))
+end
+color.cmyk2hsv = function(c, m, y, k)
+  return color.rgb2hsv(color.cmyk2rgb(c, m, y, k))
+end
+
+color.cmyk2hsl = function(c, m, y, k)
+  return color.rgb2hsl(color.cmyk2rgb(c, m, y, k))
+end
 
 local function decimalToHex(decimal)
   local hex = ''
@@ -162,9 +191,9 @@ local function decimalToHex(decimal)
   end
 end
 color.rgb2hex = function(r, g, b)
-  r = decimalToHex(r)
+  r = decimalToHex(math.floor(r * 255 + 0.5))
-  g = decimalToHex(g)
+  g = decimalToHex(math.floor(g * 255 + 0.5))
-  b = decimalToHex(b)
+  b = decimalToHex(math.floor(b * 255 + 0.5))
   return '#' .. r .. g .. b
 end
 color.hsv2hex = function(h, s, v)
@@ -173,5 +202,8 @@ end
 color.hsl2hex = function(h, s, l)
   return color.rgb2hex(color.hsl2rgb(h, s, l))
 end
+color.cmyk2hex = function(c, y, m, k)
+  return color.rgb2hex(color.cmyk2rgb(c, y, m, k))
+end
 
 return color