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local config = require "core.config"
local style = require "core.style"
local DocView = require "core.docview"
local command = require "core.command"
-- originally written by luveti
config.whitespace_map = { [" "] = "·", ["\t"] = "»" }
local visible = true
local draw_line_text = DocView.draw_line_text
function DocView:draw_line_text(idx, x, y)
draw_line_text(self, idx, x, y)
if not visible then return end
local text = self.doc.lines[idx]
local tx, ty = x, y + self:get_line_text_y_offset()
local font = self:get_font()
local color = style.whitespace or style.syntax.comment
local map = config.whitespace_map
for i = 1, #text do
local chr = text:sub(i, i)
local rep = map[chr]
if rep then
renderer.draw_text(font, rep, tx, ty, color)
end
tx = tx + font:get_width(chr)
end
end
command.add("core.docview", {
["drawwhitespace:toggle"] = function() visible = not visible end,
["drawwhitespace:no"] = function() visible = false end,
["drawwhitespace:yes"] = function() visible = true end,
})
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