A PianoRollNoteMorph is drawn as a simple mroph, but it carries the necessary state to locate its source sound event via its owner (a PianorRollScoreMorph) and the score therein. Simple editing of pitch and time placement is provided here.

	as yet unclassified

	drawing
	drawOn:

	editing
	editPitch: gridToNextQuarter gridToPrevQuarter

	event handling
	handlesMouseDown: mouseDown: mouseMove: mouseUp:

	geometry
	fullBounds

	initialization
	trackIndex:indexInTrack:

	menu
	invokeNoteMenu:

	note playing
	noteInScore noteOfDuration: playSound playSound: soundOfDuration:

	selecting
	deselect select selectFrom: selectNotes: selected

	accessing	top
	indexInTrack
	trackIndex

as yet unclassified

top

	drawing	top
	drawOn:

	editing	top
	editPitch:
	gridToNextQuarter
	gridToPrevQuarter

	event handling	top
	handlesMouseDown: Do I want to receive mouseDown events (mouseDown:, mouseMove:, mouseUp:)?
	mouseDown: Handle a mouse down event. The default response is to let my eventHandler, if any, handle it.
	mouseMove: Handle a mouse move event. The default response is to let my eventHandler, if any, handle it.
	mouseUp: Handle a mouse up event. The default response is to let my eventHandler, if any, handle it.

	geometry	top
	fullBounds Return the bounding box of the receiver and all its children. Recompute the layout if necessary.

	initialization	top
	trackIndex:indexInTrack:

	menu	top
	invokeNoteMenu: Invoke the note's edit menu.

	note playing	top
	noteInScore
	noteOfDuration:
	playSound This STARTS a single long sound. It must be stopped by playing another or nil.
	playSound:
	soundOfDuration:

	selecting	top
	deselect
	select
	selectFrom:
	selectNotes:
	selected