KeyboardWindow

part of wslib

a keyboard window. 

KeyboardWindow ( nKeys, startOctave, channel, bounds )

creates a new instance. 

k = KeyboardWindow();

The vertical clicking position equals velocity, which is visualized by the color of the key (amount of red).

If the mouse is moved out of the key's area while pressed, the note will hold until clicked again.

downAction, upAction

these variables contain Functions to be executed when a key is pressed or released.

The default downAction posts an array containing the received arguments:

channel ( as defined during creation), midi note number, midi velocity (0-127)

(

// a simple keyboard implementation using Groups for every possible note

s = Server.default;

36.do({ |i| s.sendMsg( \g_new, 500 + 36 + i ); }); // run this line again after cmd-.

k.downAction = { |chan, note, velo| s.sendMsg( \s_new, "default", s.nextNodeID, 1, 500 + note, 

\freq, note.midicps,  \amp, (velo/127) * 0.25 );

};

k.upAction = { |chan, note, velo|

// release velo changes release time (0-1s)

s.sendMsg( \n_set,  500 + note, "gate", -1 - (velo / 127.0) ) 

};

)

pressNote ( noteNumber, velo ), unPressNote ( noteNumber, velo )

press and unpress notes from the lang

k.pressNote( 60, 40 );

k.unPressNote( 60 );

These can also be called driectly on the Class. Then an extra argument is added: channel

This will press or unpress notes in all open windows with the specified channel

KeyboardWindow.pressNote( 59, 60, 0 );

KeyboardWindow.unPressNote( 59, 60, 0 );

unPressAll ( velo ), *unPressAll ( velo, channel )

press and unpress all notes from the lang

10.do({ k.pressNote( 36 + 36.rand, 64.rand + 1 ) }); // 10 random notes

k.unPressAll;

activeNotes

array with currently active notes. Last item is always the last note press

10.do({ k.pressNote( 36 + 36.rand, 64.rand + 1 ) }); // 10 random notes

k.activeNotes;

k.unPressAll;