vim-airline/autoload/airline/highlighter.vim
Christian Brabandt b7367c605a
highlighter: do not redefine the same groups several times
previously, it could happen that the same highlighting group was defined
several times, because it was available in several modes within
g:airline#theme[mode]. So the second one would always win.

Therefore, loop through all modes in reverse order and define the group
and remember what group has already been defined. If we happen to have
to re-define the same group, skip it. Since we are traversing the list
in reverse order, this should make sure the last definition wins.

This has the benefit of being more performant and hopefully helps with
e.g. #1779 and similar issues.
2018-11-07 14:25:40 +01:00

288 lines
9.2 KiB
VimL

" MIT License. Copyright (c) 2013-2018 Bailey Ling et al.
" vim: et ts=2 sts=2 sw=2
scriptencoding utf-8
let s:is_win32term = (has('win32') || has('win64')) &&
\ !has('gui_running') &&
\ (empty($CONEMUBUILD) || &term !=? 'xterm') &&
\ !(exists("+termguicolors") && &termguicolors)
let s:separators = {}
let s:accents = {}
let s:hl_groups = {}
function! s:gui2cui(rgb, fallback)
if a:rgb == ''
return a:fallback
elseif match(a:rgb, '^\%(NONE\|[fb]g\)$') > -1
return a:rgb
endif
let rgb = map(split(a:rgb[1:], '..\zs'), '0 + ("0x".v:val)')
return airline#msdos#round_msdos_colors(rgb)
endfunction
function! s:group_not_done(list, name)
if index(a:list, a:name) == -1
call add(a:list, a:name)
return 1
else
if &vbs
echomsg printf("airline: group: %s already done, skipping", a:name)
endif
return 0
endif
endfu
function! s:get_syn(group, what)
if !exists("g:airline_gui_mode")
let g:airline_gui_mode = airline#init#gui_mode()
endif
let color = ''
if hlexists(a:group)
let color = synIDattr(synIDtrans(hlID(a:group)), a:what, g:airline_gui_mode)
endif
if empty(color) || color == -1
" should always exists
let color = synIDattr(synIDtrans(hlID('Normal')), a:what, g:airline_gui_mode)
" however, just in case
if empty(color) || color == -1
let color = 'NONE'
endif
endif
return color
endfunction
function! s:get_array(fg, bg, opts)
let opts=empty(a:opts) ? '' : join(a:opts, ',')
return g:airline_gui_mode ==# 'gui'
\ ? [ a:fg, a:bg, '', '', opts ]
\ : [ '', '', a:fg, a:bg, opts ]
endfunction
function! airline#highlighter#reset_hlcache()
let s:hl_groups = {}
endfunction
function! airline#highlighter#get_highlight(group, ...)
let reverse = get(g:, 'airline_gui_mode', '') ==# 'gui'
\ ? synIDattr(synIDtrans(hlID(a:group)), 'reverse', 'gui')
\ : synIDattr(synIDtrans(hlID(a:group)), 'reverse', 'cterm')
\|| synIDattr(synIDtrans(hlID(a:group)), 'reverse', 'term')
if get(g:, 'airline_highlighting_cache', 0) && has_key(s:hl_groups, a:group)
let res = s:hl_groups[a:group]
return reverse ? [ res[1], res[0], res[3], res[2], res[4] ] : res
else
let fg = s:get_syn(a:group, 'fg')
let bg = s:get_syn(a:group, 'bg')
let bold = synIDattr(synIDtrans(hlID(a:group)), 'bold')
let opts = a:000
if bold
let opts = ['bold']
endif
let res = reverse ? s:get_array(bg, fg, opts) : s:get_array(fg, bg, opts)
endif
let s:hl_groups[a:group] = res
return res
endfunction
function! airline#highlighter#get_highlight2(fg, bg, ...)
let fg = s:get_syn(a:fg[0], a:fg[1])
let bg = s:get_syn(a:bg[0], a:bg[1])
return s:get_array(fg, bg, a:000)
endfunction
function! s:hl_group_exists(group)
if !hlexists(a:group)
return 0
elseif empty(synIDattr(hlID(a:group), 'fg'))
return 0
endif
return 1
endfunction
function! airline#highlighter#exec(group, colors)
if pumvisible()
return
endif
let colors = a:colors
if s:is_win32term
let colors[2] = s:gui2cui(get(colors, 0, ''), get(colors, 2, ''))
let colors[3] = s:gui2cui(get(colors, 1, ''), get(colors, 3, ''))
endif
let old_hi = airline#highlighter#get_highlight(a:group)
if len(colors) == 4
call add(colors, '')
endif
if g:airline_gui_mode ==# 'gui'
let new_hi = [colors[0], colors[1], '', '', colors[4]]
else
let new_hi = ['', '', printf("%s", colors[2]), printf("%s", colors[3]), colors[4]]
endif
let colors = s:CheckDefined(colors)
if old_hi != new_hi || !s:hl_group_exists(a:group)
let cmd = printf('hi %s %s %s %s %s %s %s %s',
\ a:group, s:Get(colors, 0, 'guifg='), s:Get(colors, 1, 'guibg='),
\ s:Get(colors, 2, 'ctermfg='), s:Get(colors, 3, 'ctermbg='),
\ s:Get(colors, 4, 'gui='), s:Get(colors, 4, 'cterm='),
\ s:Get(colors, 4, 'term='))
exe cmd
if has_key(s:hl_groups, a:group)
let s:hl_groups[a:group] = colors
endif
endif
endfunction
function! s:CheckDefined(colors)
" Checks, whether the definition of the colors is valid and is not empty or NONE
" e.g. if the colors would expand to this:
" hi airline_c ctermfg=NONE ctermbg=NONE
" that means to clear that highlighting group, therefore, fallback to Normal
" highlighting group for the cterm values
" This only works, if the Normal highlighting group is actually defined, so
" return early, if it has been cleared
if !exists("g:airline#highlighter#normal_fg_hi")
let g:airline#highlighter#normal_fg_hi = synIDattr(synIDtrans(hlID('Normal')), 'fg', 'cterm')
endif
if empty(g:airline#highlighter#normal_fg_hi) || g:airline#highlighter#normal_fg_hi < 0
return a:colors
endif
for val in a:colors
if !empty(val) && val !=# 'NONE'
return a:colors
endif
endfor
" this adds the bold attribute to the term argument of the :hi command,
" but at least this makes sure, the group will be defined
let fg = g:airline#highlighter#normal_fg_hi
let bg = synIDattr(synIDtrans(hlID('Normal')), 'bg', 'cterm')
if bg < 0
" in case there is no background color defined for Normal
let bg = a:colors[3]
endif
return a:colors[0:1] + [fg, bg] + [a:colors[4]]
endfunction
function! s:Get(dict, key, prefix)
let res=get(a:dict, a:key, '')
if res is ''
return ''
else
return a:prefix. res
endif
endfunction
function! s:exec_separator(dict, from, to, inverse, suffix)
if pumvisible()
return
endif
let group = a:from.'_to_'.a:to.a:suffix
let l:from = airline#themes#get_highlight(a:from.a:suffix)
let l:to = airline#themes#get_highlight(a:to.a:suffix)
if a:inverse
let colors = [ l:from[1], l:to[1], l:from[3], l:to[3] ]
else
let colors = [ l:to[1], l:from[1], l:to[3], l:from[3] ]
endif
let a:dict[group] = colors
call airline#highlighter#exec(group, colors)
endfunction
function! airline#highlighter#load_theme()
if pumvisible()
return
endif
for winnr in filter(range(1, winnr('$')), 'v:val != winnr()')
call airline#highlighter#highlight_modified_inactive(winbufnr(winnr))
endfor
call airline#highlighter#highlight(['inactive'])
if getbufvar( bufnr('%'), '&modified' )
call airline#highlighter#highlight(['normal', 'modified'])
else
call airline#highlighter#highlight(['normal'])
endif
endfunction
function! airline#highlighter#add_separator(from, to, inverse)
let s:separators[a:from.a:to] = [a:from, a:to, a:inverse]
call <sid>exec_separator({}, a:from, a:to, a:inverse, '')
endfunction
function! airline#highlighter#add_accent(accent)
let s:accents[a:accent] = 1
endfunction
function! airline#highlighter#highlight_modified_inactive(bufnr)
if getbufvar(a:bufnr, '&modified')
let colors = exists('g:airline#themes#{g:airline_theme}#palette.inactive_modified.airline_c')
\ ? g:airline#themes#{g:airline_theme}#palette.inactive_modified.airline_c : []
else
let colors = exists('g:airline#themes#{g:airline_theme}#palette.inactive.airline_c')
\ ? g:airline#themes#{g:airline_theme}#palette.inactive.airline_c : []
endif
if !empty(colors)
call airline#highlighter#exec('airline_c'.(a:bufnr).'_inactive', colors)
endif
endfunction
function! airline#highlighter#highlight(modes, ...)
let bufnr = a:0 ? a:1 : ''
let p = g:airline#themes#{g:airline_theme}#palette
" draw the base mode, followed by any overrides
let mapped = map(a:modes, 'v:val == a:modes[0] ? v:val : a:modes[0]."_".v:val')
let suffix = a:modes[0] == 'inactive' ? '_inactive' : ''
let airline_grouplist=[]
" mapped might be something like ['normal', 'normal_modified']
" if a group is in both modes available, only define the second
" that is how this was done previously overwrite the previous definition
for mode in reverse(mapped)
if exists('g:airline#themes#{g:airline_theme}#palette[mode]')
let dict = g:airline#themes#{g:airline_theme}#palette[mode]
for kvp in items(dict)
let mode_colors = kvp[1]
let name = kvp[0]
if name is# 'airline_c' && !empty(bufnr) && suffix is# '_inactive'
let name = 'airline_c'.bufnr
endif
if s:group_not_done(airline_grouplist, name.suffix)
call airline#highlighter#exec(name.suffix, mode_colors)
endif
for accent in keys(s:accents)
if !has_key(p.accents, accent)
continue
endif
let colors = copy(mode_colors)
if p.accents[accent][0] != ''
let colors[0] = p.accents[accent][0]
endif
if p.accents[accent][2] != ''
let colors[2] = p.accents[accent][2]
endif
if len(colors) >= 5
let colors[4] = get(p.accents[accent], 4, '')
else
call add(colors, get(p.accents[accent], 4, ''))
endif
if s:group_not_done(airline_grouplist, name.suffix.'_'.accent)
call airline#highlighter#exec(name.suffix.'_'.accent, colors)
endif
endfor
endfor
if empty(s:separators)
" nothing to be done
continue
endif
" TODO: optimize this
for sep in items(s:separators)
call <sid>exec_separator(dict, sep[1][0], sep[1][1], sep[1][2], suffix)
endfor
endif
endfor
endfunction