119 lines
3.6 KiB
Lua
119 lines
3.6 KiB
Lua
ardour { ["type"] = "EditorAction", name = "Marker Split",
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license = "MIT",
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author = "Ardour Team",
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description = [[Split regions on selected tracks at all locations markers]]
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}
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function factory (params) return function ()
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local loc = Session:locations () -- all marker locations
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-- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:Selection
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local sel = Editor:get_selection ()
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-- prepare undo operation
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-- see http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Session
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Session:begin_reversible_command ("Auto Region Split")
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local add_undo = false -- keep track if something has changed
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-- Track/Bus Selection -- iterate over all Editor-GUI selected tracks
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-- http://manual.ardour.org/lua-scripting/class_reference/#ArdourUI:TrackSelection
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for r in sel.tracks:routelist ():iter () do
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-- each of the items 'r' is-a
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-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Route
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local track = r:to_track () -- see if it's a track
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if track:isnil () then
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-- if not, skip it
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goto continue
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end
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-- get track's playlist
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-- http://manual.ardour.org/lua-scripting/class_reference/#ARDOUR:Playlist
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local playlist = track:playlist ()
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-- clear existing changes, prepare "diff" of state for undo
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playlist:to_stateful ():clear_changes ()
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-- iterate over all location markers
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for l in loc:list ():iter () do
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if l:is_mark() then
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-- get all regions on the given track's playlist (may be stacked)
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for reg in playlist:regions_at (l:start ()):iter () do
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playlist:split_region (reg, ARDOUR.MusicFrame (l:start(), 0))
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-- the above operation will invalidate the playlist's region list:
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-- split creates 2 new regions.
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--
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-- Hence this script does it the way it does: the inner-most loop
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-- is over playlist-regions.
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end
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end
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end
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-- collect undo data
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if not Session:add_stateful_diff_command (playlist:to_statefuldestructible ()):empty () then
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-- is something has changed, we need to save it at the end.
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add_undo = true
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end
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::continue::
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end
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-- all done, commit the combined Undo Operation
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if add_undo then
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-- the 'nil' Command here mean to use the collected diffs added above
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Session:commit_reversible_command (nil)
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else
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Session:abort_reversible_command ()
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end
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end end
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-- render an icon for the toolbar action-button
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-- this is genrally square width == height.
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-- The background is set according to the theme (leave transparent when drawing).
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-- A foreground color is passed as parameter 'fg'
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--
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-- ctx is-a http://manual.ardour.org/lua-scripting/class_reference/#Cairo:Context
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-- 2D vector graphics http://cairographics.org/
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function icon (params) return function (ctx, width, height, fg)
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local mh = height - 3.5;
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local m3 = width / 3;
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local m6 = width / 6;
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-- compare to gtk2_ardour/marker.cc "Marker"
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ctx:set_source_rgba (.8, .8, .2, 1.0)
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ctx:move_to (width / 2 - m6, 2)
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ctx:rel_line_to (m3, 0)
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ctx:rel_line_to (0, mh * 0.4)
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ctx:rel_line_to (-m6, mh * 0.6)
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ctx:rel_line_to (-m6, -mh * 0.6)
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ctx:close_path ()
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ctx:fill ()
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-- draw an arrow <--|--> on top, using the foreground color
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ctx:set_source_rgba (LuaCairo.color_to_rgba (fg))
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ctx:set_line_width (1)
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ctx:move_to (width * .5, height * .4)
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ctx:line_to (width * .5, height * .6)
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ctx:stroke ()
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ctx:move_to (2, height * .5)
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ctx:line_to (width - 2, height * .5)
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ctx:stroke ()
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ctx:move_to (width - 2, height * .5)
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ctx:rel_line_to (-m6, -m6)
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ctx:rel_line_to (0, m3)
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ctx:close_path ()
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ctx:fill ()
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ctx:move_to (2, height * .5)
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ctx:rel_line_to (m6, -m6)
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ctx:rel_line_to (0, m3)
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ctx:close_path ()
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ctx:fill ()
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end end
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