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ultimate-vim/bundle/goyo.vim/plugin/goyo.vim
2014-05-09 21:28:39 +02:00

308 lines
7.7 KiB
VimL

" Copyright (c) 2013 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: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')
execute printf("hi %s %s%s=%s", a:group, gui ? 'gui' : 'cterm', a:attr, a:color)
endfunction
function! s:blank()
let main = bufwinnr(t:goyo_master)
if main != -1
execute main . 'wincmd w'
else
call s:goyo_off()
endif
endfunction
function! s:init_pad(command)
execute a:command
setlocal buftype=nofile bufhidden=wipe nomodifiable nobuflisted noswapfile
\ nonu nocursorline 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)
let win = bufwinnr(a:bufnr)
execute win . 'wincmd w'
execute (a:vert ? 'vertical ' : '') . 'resize ' . max([0, a:size])
augroup goyop
autocmd WinEnter <buffer> call s:blank()
augroup END
" To hide scrollbars of pad windows in GVim
let diff = winheight(0) - line('$') - (has('gui_running') ? 2 : 0)
if diff > 0
setlocal modifiable
call append(0, map(range(1, diff), '""'))
normal! gg
setlocal nomodifiable
endif
execute winnr('#') . 'wincmd w'
endfunction
function! s:hmargin()
let nwidth = max([len(string(line('$'))) + 1, &numberwidth])
let width = t:goyo_width + (&number ? nwidth : 0)
return (&columns - width)
endfunction
function! s:resize_pads()
let hmargin = s:hmargin()
let tmargin = get(g:, 'goyo_margin_top', 4)
let bmargin = get(g:, 'goyo_margin_bottom', 4)
augroup goyop
autocmd!
augroup END
call s:setup_pad(t:goyo_pads.t, 0, tmargin - 1)
call s:setup_pad(t:goyo_pads.b, 0, bmargin - 2)
call s:setup_pad(t:goyo_pads.l, 1, hmargin / 2 - 1)
call s:setup_pad(t:goyo_pads.r, 1, hmargin / 2 - 1)
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, '', 'NONE')
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
endfor
endfunction
function! s:goyo_on(width)
" New tab
tab split
let t:goyo_master = winbufnr(0)
let t:goyo_width = a:width
let t:goyo_pads = {}
let t:goyo_revert =
\ { 'laststatus': &laststatus,
\ 'showtabline': &showtabline,
\ 'fillchars': &fillchars,
\ 'winwidth': &winwidth,
\ 'winminheight': &winminheight,
\ 'winheight': &winheight,
\ 'statusline': &statusline,
\ 'ruler': &ruler,
\ 'sidescroll': &sidescroll,
\ 'sidescrolloff': &sidescrolloff
\ }
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-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
if !get(g:, 'goyo_linenr', 0)
setlocal nonu
if exists('&rnu')
setlocal nornu
endif
endif
if exists('&colorcolumn')
setlocal colorcolumn=
endif
" Global options
set winwidth=1
let &winheight = max([&winminheight, 1])
set winminheight=1
set winheight=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()
let &statusline = repeat(' ', winwidth(0))
augroup goyo
autocmd!
autocmd BufWinLeave <buffer> call s:goyo_off()
autocmd TabLeave * call s:goyo_off()
autocmd VimResized * call s:resize_pads()
autocmd ColorScheme * call s:tranquilize()
augroup END
if exists('g:goyo_callbacks[0]')
call g:goyo_callbacks[0]()
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
let goyo_revert = t:goyo_revert
let goyo_disabled_gitgutter = t:goyo_disabled_gitgutter
let goyo_disabled_airline = t:goyo_disabled_airline
let goyo_disabled_powerline = t:goyo_disabled_powerline
let goyo_disabled_lightline = t:goyo_disabled_lightline
if tabpagenr() == 1
tabnew
normal! gt
bd
endif
tabclose
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_airline && !exists("#airline")
AirlineToggle
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
endfunction
function! s:goyo(...)
let width = a:0 > 0 ? a:1 : get(g:, 'goyo_width', 80)
if exists('#goyo') == 0
call s:goyo_on(width)
elseif a:0 > 0
let t:goyo_width = width
call s:resize_pads()
else
call s:goyo_off()
end
endfunction
command! -nargs=? Goyo call s:goyo(<args>)
let &cpo = s:cpo_save
unlet s:cpo_save