.vim/bundle/colorizer/autoload/colorizer.vim
" colorizer.vim Colorize all text in the form #rrggbb or #rgb; autoload functions
" Maintainer: lilydjwg <lilydjwg@gmail.com>
" Version: 1.4.1
" License: Vim License (see vim's :help license)
"
" See plugin/colorizer.vim for more info.
let s:keepcpo = &cpo
set cpo&vim
function! s:FGforBG(bg) "{{{1
" takes a 6hex color code and returns a matching color that is visible
let pure = substitute(a:bg,'^#','','')
let r = str2nr(pure[0:1], 16)
let g = str2nr(pure[2:3], 16)
let b = str2nr(pure[4:5], 16)
let fgc = g:colorizer_fgcontrast
if r*30 + g*59 + b*11 > 12000
return s:predefined_fgcolors['dark'][fgc]
else
return s:predefined_fgcolors['light'][fgc]
end
endfunction
function! s:Rgb2xterm(color) "{{{1
" selects the nearest xterm color for a rgb value like #FF0000
let best_match=0
let smallest_distance = 10000000000
let r = str2nr(a:color[0:1], 16)
let g = str2nr(a:color[2:3], 16)
let b = str2nr(a:color[4:5], 16)
let colortable = s:GetXterm2rgbTable()
for c in range(0,254)
let d = pow(colortable[c][0]-r,2) + pow(colortable[c][1]-g,2) + pow(colortable[c][2]-b,2)
if d<smallest_distance
let smallest_distance = d
let best_match = c
endif
endfor
return best_match
endfunction
"" the 6 value iterations in the xterm color cube {{{1
let s:valuerange = [0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF]
"" 16 basic colors {{{1
let s:basic16 = [
\ [0x00, 0x00, 0x00], [0xCD, 0x00, 0x00],
\ [0x00, 0xCD, 0x00], [0xCD, 0xCD, 0x00],
\ [0x00, 0x00, 0xEE], [0xCD, 0x00, 0xCD],
\ [0x00, 0xCD, 0xCD], [0xE5, 0xE5, 0xE5],
\ [0x7F, 0x7F, 0x7F], [0xFF, 0x00, 0x00],
\ [0x00, 0xFF, 0x00], [0xFF, 0xFF, 0x00],
\ [0x5C, 0x5C, 0xFF], [0xFF, 0x00, 0xFF],
\ [0x00, 0xFF, 0xFF], [0xFF, 0xFF, 0xFF]]
function! s:Xterm2rgb(color) "{{{1
" 16 basic colors
let r = 0
let g = 0
let b = 0
if a:color<16
let r = s:basic16[a:color][0]
let g = s:basic16[a:color][1]
let b = s:basic16[a:color][2]
endif
" color cube color
if a:color>=16 && a:color<=232
let l:color=a:color-16
let r = s:valuerange[(l:color/36)%6]
let g = s:valuerange[(l:color/6)%6]
let b = s:valuerange[l:color%6]
endif
" gray tone
if a:color>=233 && a:color<=253
let r=8+(a:color-232)*0x0a
let g=r
let b=r
endif
let rgb=[r,g,b]
return rgb
endfunction
function! s:SetMatcher(color, pat) "{{{1
" "color" is the converted color and "pat" is what to highlight
let group = 'Color' . strpart(a:color, 1)
if !hlexists(group) || s:force_group_update
let fg = g:colorizer_fgcontrast < 0 ? a:color : s:FGforBG(a:color)
if &t_Co == 256
exe 'hi '.group.' ctermfg='.s:Rgb2xterm(fg).' ctermbg='.s:Rgb2xterm(a:color)
endif
" Always set gui* as user may switch to GUI version and it's cheap
exe 'hi '.group.' guifg='.fg.' guibg='.a:color
endif
if !exists("w:colormatches[a:pat]")
let w:colormatches[a:pat] = matchadd(group, a:pat)
endif
endfunction
"ColorFinders {{{1
function! s:HexCode(str, lineno) "{{{2
let ret = []
let place = 0
let colorpat = '#[0-9A-Fa-f]\{3\}\>\|#[0-9A-Fa-f]\{6\}\>'
while 1
let foundcolor = matchstr(a:str, colorpat, place)
if foundcolor == ''
break
endif
let place = matchend(a:str, colorpat, place)
let pat = foundcolor . '\>'
if len(foundcolor) == 4
let foundcolor = substitute(foundcolor, '[[:xdigit:]]', '&&', 'g')
endif
call add(ret, [foundcolor, pat])
endwhile
return ret
endfunction
function! s:RgbColor(str, lineno) "{{{2
let ret = []
let place = 0
let colorpat = '\<rgb(\v\s*(\d+(\%)?)\s*,\s*(\d+%())\s*,\s*(\d+%())\s*\)'
while 1
let foundcolor = matchlist(a:str, colorpat, place)
if empty(foundcolor)
break
endif
let place = matchend(a:str, colorpat, place)
if foundcolor[2] == '%'
let r = foundcolor[1] * 255 / 100
let g = foundcolor[3] * 255 / 100
let b = foundcolor[4] * 255 / 100
else
let r = foundcolor[1]
let g = foundcolor[3]
let b = foundcolor[4]
endif
if r > 255 || g > 255 || b > 255
break
endif
let pat = printf('\<rgb(\v\s*%s\s*,\s*%s\s*,\s*%s\s*\)', foundcolor[1], foundcolor[3], foundcolor[4])
if foundcolor[2] == '%'
let pat = substitute(pat, '%', '\%', 'g')
endif
let l:color = printf('#%02x%02x%02x', r, g, b)
call add(ret, [l:color, pat])
endwhile
return ret
endfunction
function! s:RgbaColor(str, lineno) "{{{2
if has("gui_running")
let bg = synIDattr(synIDtrans(hlID("Normal")), "bg")
let bg_r = str2nr(bg[1].bg[2], 16)
let bg_g = str2nr(bg[3].bg[4], 16)
let bg_b = str2nr(bg[5].bg[6], 16)
else
" translucent colors would display incorrectly, so ignore the alpha value
return s:RgbaColorForTerm(a:str, a:lineno)
endif
let ret = []
let place = 0
let colorpat = '\<rgba(\v\s*(\d+(\%)?)\s*,\s*(\d+%())\s*,\s*(\d+%())\s*,\s*(-?[.[:digit:]]+)\s*\)'
while 1
let foundcolor = matchlist(a:str, colorpat, place)
if empty(foundcolor)
break
endif
let place = matchend(a:str, colorpat, place)
if foundcolor[2] == '%'
let ar = foundcolor[1] * 255 / 100
let ag = foundcolor[3] * 255 / 100
let ab = foundcolor[4] * 255 / 100
else
let ar = foundcolor[1]
let ag = foundcolor[3]
let ab = foundcolor[4]
endif
if ar > 255 || ag > 255 || ab > 255
break
endif
let alpha = str2float(foundcolor[5])
if alpha < 0
let alpha = 0.0
elseif alpha > 1
let alpha = 1.0
endif
let pat = printf('\<rgba(\v\s*%s\s*,\s*%s\s*,\s*%s\s*,\s*%s0*\s*\)', foundcolor[1], foundcolor[3], foundcolor[4], foundcolor[5])
if foundcolor[2] == '%'
let pat = substitute(pat, '%', '\%', 'g')
endif
let r = float2nr(ceil(ar * alpha) + ceil(bg_r * (1 - alpha)))
let g = float2nr(ceil(ag * alpha) + ceil(bg_g * (1 - alpha)))
let b = float2nr(ceil(ab * alpha) + ceil(bg_b * (1 - alpha)))
if r > 255
let r = 255
endif
if g > 255
let g = 255
endif
if b > 255
let b = 255
endif
let l:color = printf('#%02x%02x%02x', r, g, b)
call add(ret, [l:color, pat])
endwhile
return ret
endfunction
function! s:RgbaColorForTerm(str, lineno) "{{{2
let ret = []
let place = 0
let colorpat = '\<rgba(\v\s*(\d+(\%)?)\s*,\s*(\d+%())\s*,\s*(\d+%())\s*,\s*(-?[.[:digit:]]+)\s*\)'
while 1
let foundcolor = matchlist(a:str, colorpat, place)
if empty(foundcolor)
break
endif
let place = matchend(a:str, colorpat, place)
if foundcolor[2] == '%'
let ar = foundcolor[1] * 255 / 100
let ag = foundcolor[3] * 255 / 100
let ab = foundcolor[4] * 255 / 100
else
let ar = foundcolor[1]
let ag = foundcolor[3]
let ab = foundcolor[4]
endif
if ar > 255 || ag > 255 || ab > 255
break
endif
let pat = printf('\<rgba(\v\s*%s\s*,\s*%s\s*,\s*%s\s*,\ze\s*(-?[.[:digit:]]+)\s*\)', foundcolor[1], foundcolor[3], foundcolor[4])
if foundcolor[2] == '%'
let pat = substitute(pat, '%', '\%', 'g')
endif
let l:color = printf('#%02x%02x%02x', ar, ag, ab)
call add(ret, [l:color, pat])
endwhile
return ret
endfunction
function! s:PreviewColorInLine(where) "{{{1
let line = getline(a:where)
for Func in s:ColorFinder
let ret = Func(line, a:where)
" returned a list of a list: color as #rrggbb, text pattern to highlight
for r in ret
call s:SetMatcher(r[0], r[1])
endfor
endfor
endfunction
function! s:CursorMoved() "{{{1
if !exists('w:colormatches')
return
endif
if exists('b:colorizer_last_update')
if b:colorizer_last_update == b:changedtick
" Nothing changed
return
endif
endif
call s:PreviewColorInLine('.')
let b:colorizer_last_update = b:changedtick
endfunction
function! s:TextChanged() "{{{1
if !exists('w:colormatches')
return
endif
echomsg "TextChanged"
call s:PreviewColorInLine('.')
endfunction
function! colorizer#ColorHighlight(update, ...) "{{{1
if exists('w:colormatches')
if !a:update
return
endif
call s:ClearMatches()
endif
let w:colormatches = {}
if g:colorizer_fgcontrast != s:saved_fgcontrast || (exists("a:1") && a:1 == '!')
let s:force_group_update = 1
endif
for i in range(1, line("$"))
call s:PreviewColorInLine(i)
endfor
let s:force_group_update = 0
let s:saved_fgcontrast = g:colorizer_fgcontrast
augroup Colorizer
au!
if exists('##TextChanged')
autocmd TextChanged * silent call s:TextChanged()
if v:version > 704 || v:version == 704 && has('patch143')
autocmd TextChangedI * silent call s:TextChanged()
else
" TextChangedI does not work as expected
autocmd CursorMovedI * silent call s:CursorMoved()
endif
else
autocmd CursorMoved,CursorMovedI * silent call s:CursorMoved()
endif
" rgba handles differently, so need updating
autocmd GUIEnter * silent call colorizer#ColorHighlight(1)
autocmd BufRead * silent call colorizer#ColorHighlight(1)
autocmd WinEnter * silent call colorizer#ColorHighlight(1)
autocmd ColorScheme * let s:force_group_update=1 | silent call colorizer#ColorHighlight(1)
augroup END
endfunction
function! colorizer#ColorClear() "{{{1
augroup Colorizer
au!
augroup END
let save_tab = tabpagenr()
let save_win = winnr()
tabdo windo call s:ClearMatches()
exe 'tabn '.save_tab
exe save_win . 'wincmd w'
endfunction
function! s:ClearMatches() "{{{1
if !exists('w:colormatches')
return
endif
for i in values(w:colormatches)
call matchdelete(i)
endfor
unlet w:colormatches
endfunction
function! colorizer#ColorToggle() "{{{1
if exists('#Colorizer#BufRead')
call colorizer#ColorClear()
echomsg 'Disabled color code highlighting.'
else
call colorizer#ColorHighlight(0)
echomsg 'Enabled color code highlighting.'
endif
endfunction
function! s:GetXterm2rgbTable()
if !exists('s:table_xterm2rgb')
let s:table_xterm2rgb = []
for c in range(0, 254)
let s:color = s:Xterm2rgb(c)
call add(s:table_xterm2rgb, s:color)
endfor
endif
return s:table_xterm2rgb
endfun
" Setups {{{1
let s:ColorFinder = [function('s:HexCode'), function('s:RgbColor'), function('s:RgbaColor')]
let s:force_group_update = 0
let s:predefined_fgcolors = {}
let s:predefined_fgcolors['dark'] = ['#444444', '#222222', '#000000']
let s:predefined_fgcolors['light'] = ['#bbbbbb', '#dddddd', '#ffffff']
if !exists("g:colorizer_fgcontrast")
" Default to black / white
let g:colorizer_fgcontrast = len(s:predefined_fgcolors['dark']) - 1
elseif g:colorizer_fgcontrast >= len(s:predefined_fgcolors['dark'])
echohl WarningMsg
echo "g:colorizer_fgcontrast value invalid, using default"
echohl None
let g:colorizer_fgcontrast = len(s:predefined_fgcolors['dark']) - 1
endif
let s:saved_fgcontrast = g:colorizer_fgcontrast
" Restoration and modelines {{{1
let &cpo = s:keepcpo
unlet s:keepcpo
" vim:ft=vim:fdm=marker:fmr={{{,}}}:
