47 lines
1 KiB
Lua
47 lines
1 KiB
Lua
|
local core = require "core"
|
||
|
|
local config = require "core.config"
|
||
|
|
local style = require "core.style"
|
||
|
|
local DocView = require "core.docview"
|
||
|
|
|
||
|
|
config.motiontrail_steps = 50
|
||
|
|
|
||
|
|
|
||
|
|
local function lerp(a, b, t)
|
||
|
|
return a + (b - a) * t
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
local function get_caret_rect(dv)
|
||
|
|
local line, col = dv.doc:get_selection()
|
||
|
|
local x, y = dv:get_line_screen_position(line)
|
||
|
|
x = x + dv:get_col_x_offset(line, col)
|
||
|
|
return x, y, style.caret_width, dv:get_line_height()
|
||
|
|
end
|
||
|
|
|
||
|
|
|
||
|
|
local last_x, last_y, last_view
|
||
|
|
|
||
|
|
local draw = DocView.draw
|
||
|
|
|
||
|
|
function DocView:draw(...)
|
||
|
|
draw(self, ...)
|
||
|
|
if self ~= core.active_view then return end
|
||
|
|
|
||
|
|
local x, y, w, h = get_caret_rect(self)
|
||
|
|
|
||
|
|
if last_view == self and (x ~= last_x or y ~= last_y) then
|
||
|
|
local lx = x
|
||
|
|
for i = 0, 1, 1 / config.motiontrail_steps do
|
||
|
|
local ix = lerp(x, last_x, i)
|
||
|
|
local iy = lerp(y, last_y, i)
|
||
|
|
local iw = math.max(w, math.ceil(math.abs(ix - lx)))
|
||
|
|
renderer.draw_rect(ix, iy, iw, h, style.caret)
|
||
|
|
lx = ix
|
||
|
|
end
|
||
|
|
core.redraw = true
|
||
|
|
end
|
||
|
|
|
||
|
|
last_view, last_x, last_y = self, x, y
|
||
|
|
end
|
||
|
|
|