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local style = require "core.style"
local config = require "core.config"
local DocView = require "core.docview"
local function get_line_spaces(doc, idx, dir)
local text = doc.lines[idx]
if not text then
return 0
end
local s, e = text:find("^%s*")
if e == #text then
return get_line_spaces(doc, idx + dir, dir)
end
local n = 0
for i = s, e do
n = n + (text:byte(i) == 9 and config.indent_size or 1)
end
return n
end
local function get_line_indent_guide_spaces(doc, idx)
if doc.lines[idx]:find("^%s*\n") then
return math.max(
get_line_spaces(doc, idx - 1, -1),
get_line_spaces(doc, idx + 1, 1))
end
return get_line_spaces(doc, idx)
end
local draw_line_text = DocView.draw_line_text
function DocView:draw_line_text(idx, x, y)
local spaces = get_line_indent_guide_spaces(self.doc, idx)
local sw = self:get_font():get_width(" ")
local w = math.ceil(1 * SCALE)
local h = self:get_line_height()
for i = 0, spaces - 1, config.indent_size do
local color = style.guide or style.selection
renderer.draw_rect(x + sw * i, y, w, h, color)
end
draw_line_text(self, idx, x, y)
end
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