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script_name = "faderer"
script_description = ""
script_author = "garret"
script_version = "1"
include("karaskel.lua")
include("utils.lua")
local function exact_ms_from_frame(frame)
--[[
MIT License
Copyright (c) 2022 arch1t3cht
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
]]
frame = frame + 1
local ms = aegisub.ms_from_frame(frame)
while true do
local new_ms = ms - 1
if new_ms < 0 or aegisub.frame_from_ms(new_ms) ~= frame then
break
end
ms = new_ms
end
return ms - 1
end
local function start_offset(pos, start_time)
if aegisub.decode_path("?video") ~= "?video" then
pos = exact_ms_from_frame(pos) else pos = aegisub.ms_from_frame(pos)
end
return pos - start_time
end
local function main(sub, sel, act)
local line = sub[act]
local pos = aegisub.project_properties().video_position
if string.find(line.effect, "t1:") then
local but, res = aegisub.dialog.display({
{class="dropdown", items={"Black", "White", "Alpha"}, value="Black", name="c"},
})
local t1
local t2
local c = res.c
local c_tags_out = {
Black = "\\c&H000000&\\3c&H000000&\\4c&H000000&",
White = "\\c&HFFFFFF&\\3c&HFFFFFF&\\4c&HFFFFFF&",
Alpha = "\\alpha&HFF&",
}
local fx_pattern = "t1:(%d+);"
t1 = string.match(line.effect, fx_pattern)
t2 = pos
t1 = start_offset(t1, line.start_time)
t2 = start_offset(t2, line.start_time)
local line_length = line.end_time - line.start_time
if t1 < 0 then line.start_time = line.start_time + t1; t1 = 0 end
line_length = line.end_time - line.start_time
if t2 > line_length then line.end_time = line.start_time + t2 end
line_length = line.end_time - line.start_time
local half_length = line_length / 2
local additional_tags = ""
if t1 == 0 or t2 < half_length then
if not string.match(line.text, "\\t") then
additional_tags = c_tags_out[c]
end
c = ""
local meta
local styles
meta, styles = karaskel.collect_head(sub, false)
local sty = styles[line.style]
for i,v in ipairs({"1","3","4"}) do
local style_colour = sty["color"..v]
c = c .. "\\"; if v ~= "1" then c = c .. v end
c = c .. "c".. util.color_from_style(style_colour)
c = c .. "\\"; if v ~= "1" then c = c .. v end
c = c .. "a" .. util.alpha_from_style(style_colour)
end
elseif t2 > half_length then
c = c_tags_out[c]
end
line.effect = string.gsub(line.effect, ";?"..fx_pattern, "")
local tags = additional_tags.."\\t("..t1..","..t2..","..c..")}"
local old_text = line.text
line.text = string.gsub(line.text, "}", tags, 1)
if old_text == line.text then line.text = "{"..tags .. line.text end
else
if line.effect ~= "" then line.effect = line.effect .. ";" end
line.effect = line.effect .. "t1:" .. pos .. ";"
end
sub[act] = line
end
aegisub.register_macro(script_name, script_description, main)
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