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Add borders for floating windows in Neovim (#3603)

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* Add borders for floating windows in Neovim
* Add docs for floating window border setting

Co-authored-by: w0rp <w0rp@users.noreply.github.com>
This commit is contained in:
Yen3
2021-03-01 22:36:05 +01:00
committed by GitHub
parent 680ba68d81
commit 1d76fd55a1
4 changed files with 78 additions and 6 deletions
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46
autoload/ale/floating_preview.vim
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@@ -47,16 +47,53 @@ function! ale#floating_preview#Show(lines, ...) abort
endif
augroup END
let l:width = max(map(copy(a:lines), 'strdisplaywidth(v:val)'))
let l:height = min([len(a:lines), 10])
let [l:lines, l:width, l:height] = s:PrepareWindowContent(a:lines)
call nvim_win_set_width(w:preview['id'], l:width)
call nvim_win_set_height(w:preview['id'], l:height)
call nvim_buf_set_lines(w:preview['buffer'], 0, -1, v:false, a:lines)
call nvim_buf_set_lines(w:preview['buffer'], 0, -1, v:false, l:lines)
call nvim_buf_set_option(w:preview['buffer'], 'modified', v:false)
call nvim_buf_set_option(w:preview['buffer'], 'modifiable', v:false)
endfunction
function! s:PrepareWindowContent(lines) abort
let l:max_height = 10
let l:width = max(map(copy(a:lines), 'strdisplaywidth(v:val)'))
let l:height = min([len(a:lines), l:max_height])
if empty(g:ale_floating_window_border)
return [a:lines, l:width, l:height]
endif
" Add the size of borders
let l:width += 2
let l:height += 2
let l:hor = g:ale_floating_window_border[0]
let l:top = g:ale_floating_window_border[1]
let l:top_left = g:ale_floating_window_border[2]
let l:top_right = g:ale_floating_window_border[3]
let l:bottom_right = g:ale_floating_window_border[4]
let l:bottom_left = g:ale_floating_window_border[5]
let l:lines = [l:top_left . repeat(l:top, l:width - 2) . l:top_right]
for l:line in a:lines
let l:line_width = strchars(l:line)
let l:lines = add(l:lines, l:hor . l:line . repeat(' ', l:width - l:line_width - 2). l:hor)
endfor
" Truncate the lines
if len(l:lines) > l:max_height + 1
let l:lines = l:lines[0:l:max_height]
endif
let l:lines = add(l:lines, l:bottom_left . repeat(l:top, l:width - 2) . l:bottom_right)
return [l:lines, l:width, l:height]
endfunction
function! s:Create(options) abort
let l:buffer = nvim_create_buf(v:false, v:false)
let l:winid = nvim_open_win(l:buffer, v:false, {
@@ -88,4 +125,3 @@ function! s:Close() abort
unlet w:preview
endfunction