pianoroll.js file
BPianoRoll
The <b-piano-roll> element allows note editing.
Functions
piano_layout()- Determine layout in pixels.
set_canvas_font(ctx, size)- Assign canvas font to drawing context
paint_piano()- Paint piano key canvas
paint_notes()- Paint piano roll notes
paint_timeline()- Paint timeline digits and indicators
paint_timegrid(canvas, with_labels)- Paint timegrid into any canvas