" Vim color file
" Maintainer: Henry So, Jr. <henryso@panix.com>
" These are the colors of the "desert" theme by Hans Fugal with a few small
" modifications (namely that I lowered the intensity of the normal white and
" made the normal and nontext backgrounds black), modified to work with 88-
" and 256-color xterms.
"
" The original "desert" theme is available as part of the vim distribution or
" at http://hans.fugal.net/vim/colors/.
"
" The real feature of this color scheme, with a wink to the "inkpot" theme, is
" the programmatic approximation of the gui colors to the palettes of 88- and
" 256- color xterms. The functions that do this (folded away, for
" readability) are calibrated to the colors used for Thomas E. Dickey's xterm
" (version 200), which is available at http://dickey.his.com/xterm/xterm.html.
"
" I struggled with trying to parse the rgb.txt file to avoid the necessity of
" converting color names to #rrggbb form, but decided it was just not worth
" the effort. Maybe someone seeing this may decide otherwise...
set background=dark
if version > 580
" no guarantees for version 5.8 and below, but this makes it stop
" complaining
hi clear
if exists("syntax_on")
syntax reset
endif
endif
let g:colors_name="desert256"
if has("gui_running") || &t_Co == 88 || &t_Co == 256
" functions
" returns an approximate grey index for the given grey level
fun <SID>grey_number(x)
if &t_Co == 88
if a:x < 23
return 0
elseif a:x < 69
return 1
elseif a:x < 103
return 2
elseif a:x < 127
return 3
elseif a:x < 150
return 4
elseif a:x < 173
return 5
elseif a:x < 196
return 6
elseif a:x < 219
return 7
elseif a:x < 243
return 8
else
return 9
endif
else
if a:x < 14
return 0
else
let l:n = (a:x - 8) / 10
let l:m = (a:x - 8) % 10
if l:m < 5
return l:n
else
return l:n + 1
endif
endif
endif
endfun
" returns the actual grey level represented by the grey index
fun <SID>grey_level(n)
if &t_Co == 88
if a:n == 0
return 0
elseif a:n == 1
return 46
elseif a:n == 2
return 92
elseif a:n == 3
return 115
elseif a:n == 4
return 139
elseif a:n == 5
return 162
elseif a:n == 6
return 185
elseif a:n == 7
return 208
elseif a:n == 8
return 231
else
return 255
endif
else
if a:n == 0
return 0
else
return 8 + (a:n * 10)
endif
endif
endfun
" returns the palette index for the given grey index
fun <SID>grey_color(n)
if &t_Co == 88
if a:n == 0
return 16
elseif a:n == 9
return 79
else
return 79 + a:n
endif
else
if a:n == 0
return 16
elseif a:n == 25
return 231
else
return 231 + a:n
endif
endif
endfun
" returns an approximate color index for the given color level
fun <SID>rgb_number(x)
if &t_Co == 88
if a:x < 69
return 0
elseif a:x < 172
return 1
elseif a:x < 230
return 2
else
return 3
endif
else
if a:x < 75
return 0
else
let l:n = (a:x - 55) / 40
let l:m = (a:x - 55) % 40
if l:m < 20
return l:n
else
return l:n + 1
endif
endif
endif
endfun
" returns the actual color level for the given color index
fun <SID>rgb_level(n)
if &t_Co == 88
if a:n == 0
return 0
elseif a:n == 1
return 139
elseif a:n == 2
return 205
else
return 255
endif
else
if a:n == 0
return 0
else
return 55 + (a:n * 40)
endif
endif
endfun
" returns the palette index for the given R/G/B color indices
fun <SID>rgb_color(x, y, z)
if &t_Co == 88
return 16 + (a:x * 16) + (a:y * 4) + a:z
else
return 16 + (a:x * 36) + (a:y * 6) + a:z
endif
endfun
" returns the palette index to approximate the given R/G/B color levels
fun <SID>color(r, g, b)
" get the closest grey
let l:gx = <SID>grey_number(a:r)
let l:gy = <SID>grey_number(a:g)
let l:gz = <SID>grey_number(a:b)
" get the closest color
let l:x = <SID>rgb_number(a:r)
let l:y = <SID>rgb_number(a:g)
let l:z = <SID>rgb_number(a:b)
if l:gx == l:gy && l:gy == l:gz
" there are two possibilities
let l:dgr = <SID>grey_level(l:gx) - a:r
let l:dgg = <SID>grey_level(l:gy) - a:g
let l:dgb = <SID>grey_level(l:gz) - a:b
let l:dgrey = (l:dgr * l:dgr) + (l:dgg * l:dgg) + (l:dgb * l:dgb)
let l:dr = <SID>rgb_level(l:gx) - a:r
let l:dg = <SID>rgb_level(l:gy) - a:g
let l:db = <SID>rgb_level(l:gz) - a:b
let l:drgb = (l:dr * l:dr) + (l:dg * l:dg) + (l:db * l:db)
if l:dgrey < l:drgb
" use the grey
return <SID>grey_color(l:gx)
else
" use the color
return <SID>rgb_color(l:x, l:y, l:z)
endif
else
" only one possibility
return <SID>rgb_color(l:x, l:y, l:z)
endif
endfun
" returns the palette index to approximate the 'rrggbb' hex string
fun <SID>rgb(rgb)
let l:r = ("0x" . strpart(a:rgb, 0, 2)) + 0
let l:g = ("0x" . strpart(a:rgb, 2, 2)) + 0
let l:b = ("0x" . strpart(a:rgb, 4, 2)) + 0
return <SID>color(l:r, l:g, l:b)
endfun
" sets the highlighting for the given group
fun <SID>X(group, fg, bg, attr)
if a:fg != ""
exec "hi " . a:group . " guifg=#" . a:fg . " ctermfg=" . <SID>rgb(a:fg)
endif
if a:bg != ""
exec "hi " . a:group . " guibg=#" . a:bg . " ctermbg=" . <SID>rgb(a:bg)
endif
if a:attr != ""
exec "hi " . a:group . " gui=" . a:attr . " cterm=" . a:attr
endif
endfun
"
call <SID>X("Normal", "cccccc", "000000", "")
" highlight groups
call <SID>X("Cursor", "708090", "f0e68c", "")
"CursorIM
"Directory
"DiffAdd
"DiffChange
"DiffDelete
"DiffText
"ErrorMsg
call <SID>X("VertSplit", "c2bfa5", "7f7f7f", "reverse")
call <SID>X("Folded", "ffd700", "4d4d4d", "")
call <SID>X("FoldColumn", "d2b48c", "4d4d4d", "")
call <SID>X("IncSearch", "708090", "f0e68c", "")
"LineNr
call <SID>X("ModeMsg", "daa520", "", "")
call <SID>X("MoreMsg", "2e8b57", "", "")
call <SID>X("NonText", "addbe7", "000000", "bold")
call <SID>X("Question", "00ff7f", "", "")
call <SID>X("Search", "f5deb3", "cd853f", "")
call <SID>X("SpecialKey", "9acd32", "", "")
call <SID>X("StatusLine", "c2bfa5", "000000", "reverse")
call <SID>X("StatusLineNC", "c2bfa5", "7f7f7f", "reverse")
call <SID>X("Title", "cd5c5c", "", "")
call <SID>X("Visual", "6b8e23", "f0e68c", "reverse")
"VisualNOS
call <SID>X("WarningMsg", "fa8072", "", "")
"WildMenu
"Menu
"Scrollbar
"Tooltip
" syntax highlighting groups
call <SID>X("Comment", "87ceeb", "", "")
call <SID>X("Constant", "ffa0a0", "", "")
call <SID>X("Identifier", "98fb98", "", "none")
call <SID>X("Statement", "f0e68c", "", "bold")
call <SID>X("PreProc", "cd5c5c", "", "")
call <SID>X("Type", "bdb76b", "", "bold")
call <SID>X("Special", "ffdead", "", "")
"Underlined
call <SID>X("Ignore", "666666", "", "")
"Error
call <SID>X("Todo", "ff4500", "eeee00", "")
" delete functions
delf <SID>X
delf <SID>rgb
delf <SID>color
delf <SID>rgb_color
delf <SID>rgb_level
delf <SID>rgb_number
delf <SID>grey_color
delf <SID>grey_level
delf <SID>grey_number
"
else
" color terminal definitions
hi SpecialKey ctermfg=darkgreen
hi NonText cterm=bold ctermfg=darkblue
hi Directory ctermfg=darkcyan
hi ErrorMsg cterm=bold ctermfg=7 ctermbg=1
hi IncSearch cterm=NONE ctermfg=yellow ctermbg=green
hi Search cterm=NONE ctermfg=grey ctermbg=blue
hi MoreMsg ctermfg=darkgreen
hi ModeMsg cterm=NONE ctermfg=brown
hi LineNr ctermfg=3
hi Question ctermfg=green
hi StatusLine cterm=bold,reverse
hi StatusLineNC cterm=reverse
hi VertSplit cterm=reverse
hi Title ctermfg=5
hi Visual cterm=reverse
hi VisualNOS cterm=bold,underline
hi WarningMsg ctermfg=1
hi WildMenu ctermfg=0 ctermbg=3
hi Folded ctermfg=darkgrey ctermbg=NONE
hi FoldColumn ctermfg=darkgrey ctermbg=NONE
hi DiffAdd ctermbg=4
hi DiffChange ctermbg=5
hi DiffDelete cterm=bold ctermfg=4 ctermbg=6
hi DiffText cterm=bold ctermbg=1
hi Comment ctermfg=darkcyan
hi Constant ctermfg=brown
hi Special ctermfg=5
hi Identifier ctermfg=6
hi Statement ctermfg=3
hi PreProc ctermfg=5
hi Type ctermfg=2
hi Underlined cterm=underline ctermfg=5
hi Ignore ctermfg=darkgrey
hi Error cterm=bold ctermfg=7 ctermbg=1
endif
" vim: set fdl=0 fdm=marker: