ranger.nvim/lua/ranger/floating.lua

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2022-10-14 17:26:26 +02:00
local api = vim.api
--- open floating window with nice borders
local function open_floating_window()
local floating_window_scaling_factor = vim.g.ranger_floating_window_scaling_factor
-- Why is this required?
-- vim.g.ranger_floating_window_scaling_factor returns different types if the value is an integer or float
if type(floating_window_scaling_factor) == "table" then
floating_window_scaling_factor = floating_window_scaling_factor[false]
end
local status, plenary = pcall(require, "plenary.window.float")
if
status
and vim.g.ranger_floating_window_use_plenary
and vim.g.ranger_floating_window_use_plenary ~= 0
then
plenary.percentage_range_window(floating_window_scaling_factor, floating_window_scaling_factor)
return
end
local height = math.ceil(vim.o.lines * floating_window_scaling_factor) - 1
local width = math.ceil(vim.o.columns * floating_window_scaling_factor)
local row = math.ceil(vim.o.lines - height) / 2
local col = math.ceil(vim.o.columns - width) / 2
local border_opts = {
style = "minimal",
relative = "editor",
row = row - 1,
col = col - 1,
width = width + 2,
height = height + 2,
}
local opts =
{ style = "minimal", relative = "editor", row = row, col = col, width = width, height = height }
local topleft, topright, botleft, botright
local corner_chars = vim.g.ranger_floating_window_corner_chars
if type(corner_chars) == "table" and #corner_chars == 4 then
topleft, topright, botleft, botright = unpack(corner_chars)
else
topleft, topright, botleft, botright = "", "", "", ""
end
local border_lines = { topleft .. string.rep("", width) .. topright }
local middle_line = "" .. string.rep(" ", width) .. ""
for i = 1, height do
table.insert(border_lines, middle_line)
end
table.insert(border_lines, botleft .. string.rep("", width) .. botright)
-- create a unlisted scratch buffer for the border
local border_buffer = api.nvim_create_buf(false, true)
-- set border_lines in the border buffer from start 0 to end -1 and strict_indexing false
api.nvim_buf_set_lines(border_buffer, 0, -1, true, border_lines)
-- create border window
local border_window = api.nvim_open_win(border_buffer, true, border_opts)
vim.cmd "set winhl=Normal:Floating"
-- create a unlisted scratch buffer
if RANGER_BUFFER == nil or vim.fn.bufwinnr(RANGER_BUFFER) == -1 then
RANGER_BUFFER = api.nvim_create_buf(false, true)
else
RANGER_LOADED = true
end
-- create file window, enter the window, and use the options defined in opts
local _ = api.nvim_open_win(RANGER_BUFFER, true, opts)
vim.bo[RANGER_BUFFER].filetype = "ranger"
vim.cmd "setlocal bufhidden=hide"
vim.cmd "setlocal nocursorcolumn"
vim.cmd("set winblend=" .. vim.g.ranger_floating_window_winblend)
-- use autocommand to ensure that the border_buffer closes at the same time as the main buffer
local cmd = [[autocmd WinLeave <buffer> silent! execute 'hide']]
vim.cmd(cmd)
cmd = [[autocmd WinLeave <buffer> silent! execute 'silent bdelete! %s']]
vim.cmd(cmd:format(border_buffer))
end
return {
open_floating_window = open_floating_window,
}