vimrc/sources_non_forked/goyo.vim/autoload/goyo.vim
2023-04-01 22:48:04 +02:00

449 lines
12 KiB
VimL

" Copyright (c) 2015 Junegunn Choi
"
" MIT License
"
" Permission is hereby granted, free of charge, to any person obtaining
" a copy of this software and associated documentation files (the
" "Software"), to deal in the Software without restriction, including
" without limitation the rights to use, copy, modify, merge, publish,
" distribute, sublicense, and/or sell copies of the Software, and to
" permit persons to whom the Software is furnished to do so, subject to
" the following conditions:
"
" The above copyright notice and this permission notice shall be
" included in all copies or substantial portions of the Software.
"
" THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
" EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
" MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
" NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
" LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
" OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
" WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
let s:cpo_save = &cpo
set cpo&vim
function! s:const(val, min, max)
return min([max([a:val, a:min]), a:max])
endfunction
function! s:get_color(group, attr)
return synIDattr(synIDtrans(hlID(a:group)), a:attr)
endfunction
function! s:set_color(group, attr, color)
let gui = has('gui_running') || has('termguicolors') && &termguicolors
execute printf('hi %s %s%s=%s', a:group, gui ? 'gui' : 'cterm', a:attr, a:color)
endfunction
nnoremap <silent> <Plug>(goyo-off) :call <sid>goyo_off()<cr>
function! s:blank(repel)
if bufwinnr(t:goyo_pads.r) <= bufwinnr(t:goyo_pads.l) + 1
\ || bufwinnr(t:goyo_pads.b) <= bufwinnr(t:goyo_pads.t) + 3
call feedkeys("\<Plug>(goyo-off)")
endif
execute 'noautocmd wincmd' a:repel
endfunction
function! s:init_pad(command)
execute a:command
setlocal buftype=nofile bufhidden=wipe nomodifiable nobuflisted noswapfile
\ nonu nocursorline nocursorcolumn winfixwidth winfixheight statusline=\
if exists('&rnu')
setlocal nornu
endif
if exists('&colorcolumn')
setlocal colorcolumn=
endif
let bufnr = winbufnr(0)
execute winnr('#') . 'wincmd w'
return bufnr
endfunction
function! s:setup_pad(bufnr, vert, size, repel)
let win = bufwinnr(a:bufnr)
execute win . 'wincmd w'
execute (a:vert ? 'vertical ' : '') . 'resize ' . max([0, a:size])
augroup goyop
execute 'autocmd WinEnter,CursorMoved <buffer> nested call s:blank("'.a:repel.'")'
autocmd WinLeave <buffer> call s:hide_statusline()
augroup END
" To hide scrollbars of pad windows in GVim
let diff = winheight(0) - line('$') - (has('gui_running') ? 2 : 0)
if diff > 0
setlocal modifiable
call append(0, map(range(1, diff), '""'))
normal! gg
setlocal nomodifiable
endif
execute winnr('#') . 'wincmd w'
endfunction
function! s:resize_pads()
augroup goyop
autocmd!
augroup END
let t:goyo_dim.width = s:const(t:goyo_dim.width, 2, &columns)
let t:goyo_dim.height = s:const(t:goyo_dim.height, 2, &lines)
let vmargin = max([0, (&lines - t:goyo_dim.height) / 2 - 1])
let yoff = s:const(t:goyo_dim.yoff, - vmargin, vmargin)
let top = vmargin + yoff
let bot = vmargin - yoff - 1
call s:setup_pad(t:goyo_pads.t, 0, top, 'j')
call s:setup_pad(t:goyo_pads.b, 0, bot, 'k')
let nwidth = max([len(string(line('$'))) + 1, &numberwidth])
let width = t:goyo_dim.width + (&number ? nwidth : 0)
let hmargin = max([0, (&columns - width) / 2 - 1])
let xoff = s:const(t:goyo_dim.xoff, - hmargin, hmargin)
call s:setup_pad(t:goyo_pads.l, 1, hmargin + xoff, 'l')
call s:setup_pad(t:goyo_pads.r, 1, hmargin - xoff, 'h')
endfunction
function! s:tranquilize()
let bg = s:get_color('Normal', 'bg#')
for grp in ['NonText', 'FoldColumn', 'ColorColumn', 'VertSplit',
\ 'StatusLine', 'StatusLineNC', 'SignColumn']
" -1 on Vim / '' on GVim
if bg == -1 || empty(bg)
call s:set_color(grp, 'fg', get(g:, 'goyo_bg', 'black'))
call s:set_color(grp, 'bg', 'NONE')
else
call s:set_color(grp, 'fg', bg)
call s:set_color(grp, 'bg', bg)
endif
call s:set_color(grp, '', 'NONE')
endfor
endfunction
function! s:hide_statusline()
setlocal statusline=\
endfunction
function! s:hide_linenr()
if !get(g:, 'goyo_linenr', 0)
setlocal nonu
if exists('&rnu')
setlocal nornu
endif
endif
if exists('&colorcolumn')
setlocal colorcolumn=
endif
endfunction
function! s:maps_nop()
let mapped = filter(['R', 'H', 'J', 'K', 'L', '|', '_'],
\ "empty(maparg(\"\<c-w>\".v:val, 'n'))")
for c in mapped
execute 'nnoremap <c-w>'.escape(c, '|').' <nop>'
endfor
return mapped
endfunction
function! s:maps_resize()
let commands = {
\ '=': ':<c-u>let t:goyo_dim = <sid>parse_arg(t:goyo_dim_expr) <bar> call <sid>resize_pads()<cr>',
\ '>': ':<c-u>let t:goyo_dim.width = winwidth(0) + 2 * v:count1 <bar> call <sid>resize_pads()<cr>',
\ '<': ':<c-u>let t:goyo_dim.width = winwidth(0) - 2 * v:count1 <bar> call <sid>resize_pads()<cr>',
\ '+': ':<c-u>let t:goyo_dim.height += 2 * v:count1 <bar> call <sid>resize_pads()<cr>',
\ '-': ':<c-u>let t:goyo_dim.height -= 2 * v:count1 <bar> call <sid>resize_pads()<cr>'
\ }
let mapped = filter(keys(commands), "empty(maparg(\"\<c-w>\".v:val, 'n'))")
for c in mapped
execute 'nnoremap <silent> <c-w>'.c.' '.commands[c]
endfor
return mapped
endfunction
nnoremap <silent> <plug>(goyo-resize) :<c-u>call <sid>resize_pads()<cr>
function! s:goyo_on(dim)
let dim = s:parse_arg(a:dim)
if empty(dim)
return
endif
let s:orig_tab = tabpagenr()
let settings =
\ { 'laststatus': &laststatus,
\ 'showtabline': &showtabline,
\ 'fillchars': &fillchars,
\ 'winminwidth': &winminwidth,
\ 'winwidth': &winwidth,
\ 'winminheight': &winminheight,
\ 'winheight': &winheight,
\ 'ruler': &ruler,
\ 'sidescroll': &sidescroll,
\ 'sidescrolloff': &sidescrolloff
\ }
" New tab
tab split
let t:goyo_master = winbufnr(0)
let t:goyo_dim = dim
let t:goyo_dim_expr = a:dim
let t:goyo_pads = {}
let t:goyo_revert = settings
let t:goyo_maps = extend(s:maps_nop(), s:maps_resize())
if has('gui_running')
let t:goyo_revert.guioptions = &guioptions
endif
" vim-gitgutter
let t:goyo_disabled_gitgutter = get(g:, 'gitgutter_enabled', 0)
if t:goyo_disabled_gitgutter
silent! GitGutterDisable
endif
" vim-signify
let t:goyo_disabled_signify = !empty(getbufvar(bufnr(''), 'sy'))
if t:goyo_disabled_signify
SignifyToggle
endif
" vim-airline
let t:goyo_disabled_airline = exists('#airline')
if t:goyo_disabled_airline
AirlineToggle
endif
" vim-powerline
let t:goyo_disabled_powerline = exists('#PowerlineMain')
if t:goyo_disabled_powerline
augroup PowerlineMain
autocmd!
augroup END
augroup! PowerlineMain
endif
" lightline.vim
let t:goyo_disabled_lightline = exists('#lightline')
if t:goyo_disabled_lightline
silent! call lightline#disable()
endif
call s:hide_linenr()
" Global options
let &winheight = max([&winminheight, 1])
set winminheight=1
set winheight=1
set winminwidth=1 winwidth=1
set laststatus=0
set showtabline=0
set noruler
set fillchars+=vert:\
set fillchars+=stl:\
set fillchars+=stlnc:\
set sidescroll=1
set sidescrolloff=0
" Hide left-hand scrollbars
if has('gui_running')
set guioptions-=l
set guioptions-=L
endif
let t:goyo_pads.l = s:init_pad('vertical topleft new')
let t:goyo_pads.r = s:init_pad('vertical botright new')
let t:goyo_pads.t = s:init_pad('topleft new')
let t:goyo_pads.b = s:init_pad('botright new')
call s:resize_pads()
call s:tranquilize()
augroup goyo
autocmd!
autocmd TabLeave * nested call s:goyo_off()
autocmd VimResized * call s:resize_pads()
autocmd ColorScheme * call s:tranquilize()
autocmd BufWinEnter * call s:hide_linenr() | call s:hide_statusline()
autocmd WinEnter,WinLeave * call s:hide_statusline()
if has('nvim')
autocmd TermClose * call feedkeys("\<plug>(goyo-resize)")
endif
augroup END
call s:hide_statusline()
if exists('g:goyo_callbacks[0]')
call g:goyo_callbacks[0]()
endif
if exists('#User#GoyoEnter')
doautocmd User GoyoEnter
endif
endfunction
function! s:goyo_off()
if !exists('#goyo')
return
endif
" Oops, not this tab
if !exists('t:goyo_revert')
return
endif
" Clear auto commands
augroup goyo
autocmd!
augroup END
augroup! goyo
augroup goyop
autocmd!
augroup END
augroup! goyop
for c in t:goyo_maps
execute 'nunmap <c-w>'.escape(c, '|')
endfor
let goyo_revert = t:goyo_revert
let goyo_disabled_gitgutter = t:goyo_disabled_gitgutter
let goyo_disabled_signify = t:goyo_disabled_signify
let goyo_disabled_airline = t:goyo_disabled_airline
let goyo_disabled_powerline = t:goyo_disabled_powerline
let goyo_disabled_lightline = t:goyo_disabled_lightline
let goyo_orig_buffer = t:goyo_master
let [line, col] = [line('.'), col('.')]
if tabpagenr() == 1
tabnew
normal! gt
bd
endif
tabclose
execute 'normal! '.s:orig_tab.'gt'
if winbufnr(0) == goyo_orig_buffer
" Doesn't work if window closed with `q`
execute printf('normal! %dG%d|', line, col)
endif
let wmw = remove(goyo_revert, 'winminwidth')
let ww = remove(goyo_revert, 'winwidth')
let &winwidth = ww
let &winminwidth = wmw
let wmh = remove(goyo_revert, 'winminheight')
let wh = remove(goyo_revert, 'winheight')
let &winheight = max([wmh, 1])
let &winminheight = wmh
let &winheight = wh
for [k, v] in items(goyo_revert)
execute printf('let &%s = %s', k, string(v))
endfor
execute 'colo '. get(g:, 'colors_name', 'default')
if goyo_disabled_gitgutter
silent! GitGutterEnable
endif
if goyo_disabled_signify
silent! if !b:sy.active
SignifyToggle
endif
endif
if goyo_disabled_airline && !exists('#airline')
AirlineToggle
" For some reason, Airline requires two refreshes to avoid display
" artifacts
silent! AirlineRefresh
silent! AirlineRefresh
endif
if goyo_disabled_powerline && !exists('#PowerlineMain')
doautocmd PowerlineStartup VimEnter
silent! PowerlineReloadColorscheme
endif
if goyo_disabled_lightline
silent! call lightline#enable()
endif
if exists('#Powerline')
doautocmd Powerline ColorScheme
endif
if exists('g:goyo_callbacks[1]')
call g:goyo_callbacks[1]()
endif
if exists('#User#GoyoLeave')
doautocmd User GoyoLeave
endif
endfunction
function! s:relsz(expr, limit)
if a:expr !~ '%$'
return str2nr(a:expr)
endif
return a:limit * str2nr(a:expr[:-2]) / 100
endfunction
function! s:parse_arg(arg)
if exists('g:goyo_height') || !exists('g:goyo_margin_top') && !exists('g:goyo_margin_bottom')
let height = s:relsz(get(g:, 'goyo_height', '85%'), &lines)
let yoff = 0
else
let top = max([0, s:relsz(get(g:, 'goyo_margin_top', 4), &lines)])
let bot = max([0, s:relsz(get(g:, 'goyo_margin_bottom', 4), &lines)])
let height = &lines - top - bot
let yoff = top - bot
endif
let dim = { 'width': s:relsz(get(g:, 'goyo_width', 80), &columns),
\ 'height': height,
\ 'xoff': 0,
\ 'yoff': yoff }
if empty(a:arg)
return dim
endif
let parts = matchlist(a:arg, '^\s*\([0-9]\+%\?\)\?\([+-][0-9]\+%\?\)\?\%(x\([0-9]\+%\?\)\?\([+-][0-9]\+%\?\)\?\)\?\s*$')
if empty(parts)
echohl WarningMsg
echo 'Invalid dimension expression: '.a:arg
echohl None
return {}
endif
if !empty(parts[1]) | let dim.width = s:relsz(parts[1], &columns) | endif
if !empty(parts[2]) | let dim.xoff = s:relsz(parts[2], &columns) | endif
if !empty(parts[3]) | let dim.height = s:relsz(parts[3], &lines) | endif
if !empty(parts[4]) | let dim.yoff = s:relsz(parts[4], &lines) | endif
return dim
endfunction
function! goyo#execute(bang, dim)
if a:bang
if exists('#goyo')
call s:goyo_off()
endif
else
if exists('#goyo') == 0
call s:goyo_on(a:dim)
elseif !empty(a:dim)
if winnr('$') < 5
call s:goyo_off()
return goyo#execute(a:bang, a:dim)
endif
let dim = s:parse_arg(a:dim)
if !empty(dim)
let t:goyo_dim = dim
let t:goyo_dim_expr = a:dim
call s:resize_pads()
endif
else
call s:goyo_off()
end
end
endfunction
let &cpo = s:cpo_save
unlet s:cpo_save