Scripting To Emulate Direct Access To Octave Field And Mix-Paste Data

Renoise Tool Development
1

Digging into the scripting documentation.

My first thoughts are to emulate direct access to the octave field via a shortcut and numrow taking into account the current step length, and provide a direct shortcut(s) for mix-paste data methods without having to mouse click the little mixpaste check box to switch to mixpaste mode.

2

outline of process for direct octave access:

  • keybind+(0-9) pressed
  • get current edit step
  • get note+oct under cursor
  • change octave to selected
  • jump to next edit step
3

Important for emulating direct access to the octave column will be reading and changing the data currently under the cursor, however reading through the docs and other scripts, I only see ways to edit an entire track, or a current selection. What is under the cursor is not considered a selection unless it is clicked on or manually selected by holding shift and hitting an arrow key.

Currently I can read all the data currently under the cursor using:

notedata = renoise.song().selected_note_column

but this is considered userdata, not string data which may be broken up and manipulated.

any tips?

4

You’re assigning an object to notedata, not any values. An “oprint(renoise.song().selected_note_column)” gives you the following output:

class: NoteColumn  
 properties:  
 delay_string  
 delay_value  
 instrument_string  
 instrument_value  
 is_empty  
 is_selected  
 note_string  
 note_value  
 panning_string  
 panning_value  
 volume_string  
 volume_value  
 methods:  
 __STRICT  
 __eq  
 __tostring  
 clear  
 copy_from

So the correct way to access the properties, in this example as string, would be:

note = renoise.song().selected_note_column.note_string

Methods are accessed using the double point. To clear a column for example:

renoise.song().selected_note_column:clear()
5

Thanks! My main concern was that access to note data under the cursor, but not selected, might be neglected from being manipulated in ways I have seen other scripts use the various iteration methods to perform similar changes I have in mind. When googling info about userdata, most of the results read like: Userdata values cannot be created or modified in Lua, only through the C API.

6

some success:

[luabox]
– Thanks to suva for the function per octave declaration loop :)
– http://www.protman.com

function ProcessOctave(new_octave)

local new_pos = 0
local song = renoise.song()
local editstep = renoise.song().transport.edit_step

new_pos = song.transport.edit_pos
if song.selected_note_column.note_value < 120 then
song.selected_note_column.note_value = song.selected_note_column.note_value % 12 + (12 * new_octave)
end
new_pos.line = new_pos.line + editstep
if new_pos.line <= song.selected_pattern.number_of_lines then
song.transport.edit_pos = new_pos
end

end

for oct=0,9 do
renoise.tool():add_keybinding {
name = "Pattern Editor:Pattern:Set Note to Octave " … oct,
invoke = function() ProcessOctave(oct) end
}
end

[/luabox]