1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
local common = require "core.common"
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"] = "»" }
config.draw_whitespace = 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 config.draw_whitespace then return end
local text = self.doc.lines[idx]
local font = self:get_font()
local ss = font:subpixel_scale()
local tx, ty = ss * x, y + self:get_line_text_y_offset()
local color = style.whitespace or style.syntax.comment
local map = config.whitespace_map
for chr in common.utf8_chars(text) do
local rep = map[chr]
if rep then
renderer.draw_text_subpixel(font, rep, tx, ty, color)
end
tx = tx + font:get_width_subpixel(chr)
end
end
command.add("core.docview", {
["draw-whitespace:toggle"] = function() config.draw_whitespace = not config.draw_whitespace end,
["draw-whitespace:disable"] = function() config.draw_whitespace = false end,
["draw-whitespace:enable"] = function() config.draw_whitespace = true end,
})
|
