`drawwhitespace`: Cache whitespace location
This commit is contained in:
Guldoman
parent
685956cbdb
commit
f38723ea46
|
|
@ -4,6 +4,7 @@ local style = require "core.style"
|
|||
local DocView = require "core.docview"
|
||||
local common = require "core.common"
|
||||
local config = require "core.config"
|
||||
local Highlighter = require "core.doc.highlighter"
|
||||
|
||||
config.plugins.drawwhitespace = common.merge({
|
||||
enabled = true,
|
||||
|
|
@ -95,6 +96,52 @@ config.plugins.drawwhitespace = common.merge({
|
|||
}
|
||||
}, config.plugins.drawwhitespace)
|
||||
|
||||
|
||||
local ws_cache = setmetatable({}, { __mode = "k" })
|
||||
|
||||
-- Move cache to make space for new lines
|
||||
local prev_insert_notify = Highlighter.insert_notify
|
||||
function Highlighter:insert_notify(line, n, ...)
|
||||
prev_insert_notify(self, line, n, ...)
|
||||
local blanks = { }
|
||||
if not ws_cache[self] then
|
||||
ws_cache[self] = {}
|
||||
end
|
||||
local to = math.min(line + n, #self.doc.lines)
|
||||
for i=#self.doc.lines+n,to,-1 do
|
||||
ws_cache[self][i] = ws_cache[self][i - n]
|
||||
end
|
||||
for i=line,to do
|
||||
ws_cache[self][i] = nil
|
||||
end
|
||||
end
|
||||
|
||||
-- Close the cache gap created by removed lines
|
||||
local prev_remove_notify = Highlighter.remove_notify
|
||||
function Highlighter:remove_notify(line, n, ...)
|
||||
prev_remove_notify(self, line, n, ...)
|
||||
if not ws_cache[self] then
|
||||
ws_cache[self] = {}
|
||||
end
|
||||
local to = math.max(line + n, #self.doc.lines)
|
||||
for i=line,to do
|
||||
ws_cache[self][i] = ws_cache[self][i + n]
|
||||
end
|
||||
end
|
||||
|
||||
-- Remove changed lines from the cache
|
||||
local prev_update_notify = Highlighter.update_notify
|
||||
function Highlighter:update_notify(line, n, ...)
|
||||
prev_update_notify(self, line, n, ...)
|
||||
if not ws_cache[self] then
|
||||
ws_cache[self] = {}
|
||||
end
|
||||
for i=line,line+n do
|
||||
ws_cache[self][i] = nil
|
||||
end
|
||||
end
|
||||
|
||||
|
||||
local function get_option(substitution, option)
|
||||
if substitution[option] == nil then
|
||||
return config.plugins.drawwhitespace[option]
|
||||
|
|
@ -114,66 +161,99 @@ function DocView:draw_line_text(idx, x, y)
|
|||
|
||||
local font = (self:get_font() or style.syntax_fonts["whitespace"] or style.syntax_fonts["comment"])
|
||||
local ty = y + self:get_line_text_y_offset()
|
||||
local tx
|
||||
local text, offset, s, e = self.doc.lines[idx], 1
|
||||
local x1, _, x2, _ = self:get_content_bounds()
|
||||
local _offset = self:get_x_offset_col(idx, x1)
|
||||
|
||||
for _, substitution in pairs(config.plugins.drawwhitespace.substitutions) do
|
||||
local char = substitution.char
|
||||
local sub = substitution.sub
|
||||
offset = _offset
|
||||
if
|
||||
not ws_cache[self.doc.highlighter]
|
||||
or ws_cache[self.doc.highlighter].font ~= font
|
||||
then
|
||||
ws_cache[self.doc.highlighter] = {font = font}
|
||||
end
|
||||
|
||||
local show_leading = get_option(substitution, "show_leading")
|
||||
local show_middle = get_option(substitution, "show_middle")
|
||||
local show_trailing = get_option(substitution, "show_trailing")
|
||||
if not ws_cache[self.doc.highlighter][idx] then -- need to cache line
|
||||
local cache = {}
|
||||
|
||||
local show_middle_min = get_option(substitution, "show_middle_min")
|
||||
local tx
|
||||
local text = self.doc.lines[idx]
|
||||
|
||||
local base_color = get_option(substitution, "color")
|
||||
local leading_color = get_option(substitution, "leading_color") or base_color
|
||||
local middle_color = get_option(substitution, "middle_color") or base_color
|
||||
local trailing_color = get_option(substitution, "trailing_color") or base_color
|
||||
for _, substitution in pairs(config.plugins.drawwhitespace.substitutions) do
|
||||
local char = substitution.char
|
||||
local sub = substitution.sub
|
||||
local offset = 1
|
||||
|
||||
local pattern = char.."+"
|
||||
while true do
|
||||
s, e = text:find(pattern, offset)
|
||||
if not s then break end
|
||||
local show_leading = get_option(substitution, "show_leading")
|
||||
local show_middle = get_option(substitution, "show_middle")
|
||||
local show_trailing = get_option(substitution, "show_trailing")
|
||||
|
||||
tx = self:get_col_x_offset(idx, s) + x
|
||||
local show_middle_min = get_option(substitution, "show_middle_min")
|
||||
|
||||
local color = base_color
|
||||
local draw = false
|
||||
local base_color = get_option(substitution, "color")
|
||||
local leading_color = get_option(substitution, "leading_color") or base_color
|
||||
local middle_color = get_option(substitution, "middle_color") or base_color
|
||||
local trailing_color = get_option(substitution, "trailing_color") or base_color
|
||||
|
||||
if e == #text - 1 then
|
||||
draw = show_trailing
|
||||
color = trailing_color
|
||||
elseif s == 1 then
|
||||
draw = show_leading
|
||||
color = leading_color
|
||||
else
|
||||
draw = show_middle and (e - s + 1 >= show_middle_min)
|
||||
color = middle_color
|
||||
end
|
||||
local pattern = char.."+"
|
||||
while true do
|
||||
local s, e = text:find(pattern, offset)
|
||||
if not s then break end
|
||||
|
||||
if draw then
|
||||
-- We need to draw tabs one at a time because they might have a
|
||||
-- different size than the substituting character.
|
||||
-- This also applies to any other char if we use non-monospace fonts
|
||||
-- but we ignore this case for now.
|
||||
if char == "\t" then
|
||||
for i = s,e do
|
||||
tx = self:get_col_x_offset(idx, i) + x
|
||||
tx = renderer.draw_text(font, sub, tx, ty, color)
|
||||
end
|
||||
tx = self:get_col_x_offset(idx, s)
|
||||
|
||||
local color = base_color
|
||||
local draw = false
|
||||
|
||||
if e == #text - 1 then
|
||||
draw = show_trailing
|
||||
color = trailing_color
|
||||
elseif s == 1 then
|
||||
draw = show_leading
|
||||
color = leading_color
|
||||
else
|
||||
tx = renderer.draw_text(font, string.rep(sub, e - s + 1), tx, ty, color)
|
||||
draw = show_middle and (e - s + 1 >= show_middle_min)
|
||||
color = middle_color
|
||||
end
|
||||
end
|
||||
|
||||
if tx > x + x2 then break end
|
||||
offset = e + 1
|
||||
if draw then
|
||||
local last_cache_idx = #cache
|
||||
-- We need to draw tabs one at a time because they might have a
|
||||
-- different size than the substituting character.
|
||||
-- This also applies to any other char if we use non-monospace fonts
|
||||
-- but we ignore this case for now.
|
||||
if char == "\t" then
|
||||
for i = s,e do
|
||||
tx = self:get_col_x_offset(idx, i)
|
||||
cache[last_cache_idx + 1] = sub
|
||||
cache[last_cache_idx + 2] = tx
|
||||
cache[last_cache_idx + 3] = font:get_width(sub)
|
||||
cache[last_cache_idx + 4] = color
|
||||
last_cache_idx = last_cache_idx + 4
|
||||
end
|
||||
else
|
||||
cache[last_cache_idx + 1] = string.rep(sub, e - s + 1)
|
||||
cache[last_cache_idx + 2] = tx
|
||||
cache[last_cache_idx + 3] = font:get_width(cache[last_cache_idx + 1])
|
||||
cache[last_cache_idx + 4] = color
|
||||
end
|
||||
end
|
||||
offset = e + 1
|
||||
end
|
||||
end
|
||||
ws_cache[self.doc.highlighter][idx] = cache
|
||||
end
|
||||
|
||||
-- draw from cache
|
||||
local x1, _, x2, _ = self:get_content_bounds()
|
||||
x1 = x1 + x
|
||||
x2 = x2 + x
|
||||
local cache = ws_cache[self.doc.highlighter][idx]
|
||||
for i=1,#cache,4 do
|
||||
local sub = cache[i]
|
||||
local tx = cache[i + 1] + x
|
||||
local tw = cache[i + 2]
|
||||
local color = cache[i + 3]
|
||||
if tx + tw >= x1 then
|
||||
tx = renderer.draw_text(font, sub, tx, y, color)
|
||||
end
|
||||
if tx > x2 then break end
|
||||
end
|
||||
|
||||
return draw_line_text(self, idx, x, y)
|
||||
|
|
|
|||
Loading…
Reference in New Issue