vim/vim-indent-guides
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Added methods for converting between rgb and hex color formats

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Nate Kane 2010-12-06 21:30:58 +10:00
parent 8735dac62b
commit 2f539bbe1f
1 changed files with 84 additions and 2 deletions
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86
plugin/indent-guides.vim
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@ -1,6 +1,8 @@
" Author: Nate Kane <nathanaelkane AT gmail DOT com>
" Homepage: http://github.com/nathanaelkane/vim-indent-guides
let s:hex_color_pattern = '#[0-9A-Fa-f]\{6\}'
function! s:IndentGuidesToggle()
let g:IndentGuides_matches =
\ exists('g:IndentGuides_matches') ? g:IndentGuides_matches : []
@ -43,8 +45,8 @@ function! s:IndentGuidesDisable()
endfunction
function! s:IndentGuidesHighlightColors()
hi IndentLevelOdd guibg=#252525
hi IndentLevelEven guibg=#303030
hi IndentLevelOdd guibg=#FFFFFF
hi IndentLevelEven guibg=#FBFBFB
endfunction
" Commands
@ -59,3 +61,83 @@ let g:IndentGuides_debug = 0
" Default mapping
nmap <Leader>ig :IndentGuidesToggle<CR>
"
" Return hex string equivalent to given decimal string or number.
"
" Example: DecToHex(255, 2)
" Returns: 'FF'
"
" Example: DecToHex(255, 5)
" Returns: '000FF'
"
function! DecToHex(arg, padding)
return toupper(printf('%0' . a:padding . 'x', a:arg + 0))
endfunction
"
" Return number equivalent to given hex string ('0x' is optional).
"
" Example: HexToDec('FF')
" Returns: 255
"
" Example: HexToDec('88')
" Returns: 136
"
" Example: HexToDec('00')
" Returns: 0
"
function! HexToDec(arg)
return (a:arg =~? '^0x') ? a:arg + 0 : ('0x'.a:arg) + 0
endfunction
" Example: HexColorToRGB('#0088FF')
" Returns: [0, 136, 255]
function! HexColorToRGB(hex_color)
let l:rgb = []
if matchstr(a:hex_color, s:hex_color_pattern) == a:hex_color
let l:red = HexToDec(strpart(a:hex_color, 1, 2))
let l:green = HexToDec(strpart(a:hex_color, 3, 2))
let l:blue = HexToDec(strpart(a:hex_color, 5, 2))
let l:rgb = [l:red, l:green, l:blue]
end
return l:rgb
endfunction
"
" Example: RGBColorToHex([0, 136, 255])
" Returns: '#0088FF'
"
function! RGBColorToHex(rgb_color)
let l:hex_color = '#'
let l:hex_color .= DecToHex(a:rgb_color[0], 2) " red
let l:hex_color .= DecToHex(a:rgb_color[1], 2) " green
let l:hex_color .= DecToHex(a:rgb_color[2], 2) " blue
return l:hex_color
endfunction
"
" Example: HexColorBrighten('#000000', 0.10)
" Returns: '#191919'
"
function! HexColorBrighten(color, percent)
let l:rgb = HexColorToRGB(a:color)
let l:rgb_brightened = []
for decimal in l:rgb
call add(l:rgb_brightened, float2nr((255 - decimal) * a:percent))
endfor
return RGBColorToHex(l:rgb_brightened)
endfunction
"
" Example: HexColorDarken('#FFFFFF', 0.10)
" Returns: '#E5E5E5'
"
function! HexColorDarken(color, percent)
let l:rgb = HexColorToRGB(a:color)
let l:rgb_darkened = []
for decimal in l:rgb
call add(l:rgb_darkened, float2nr(decimal * (1 - a:percent)))
endfor
return RGBColorToHex(l:rgb_darkened)
endfunction