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