/*
* Created on Feb 8, 2007
*
* Copyright (c) 2007 Jens Gulden
*
* http://www.frinika.com
*
* This file is part of Frinika.
*
* Frinika is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
* Frinika is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* along with Frinika; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
package com.frinika.sequencer.gui.menu.midi;
import javax.swing.JComponent;
import com.frinika.project.gui.ProjectFrame;
import com.frinika.sequencer.model.NoteEvent;
import java.util.*;
/**
* Menu-action for setting the velocity of selected MIDI notes.
*
* @author Jens Gulden
*/
public class MidiVelocityAction extends AbstractMidiAction {
int startVelocity = 100;
int endVelocity = 100;
private long startTick;
private long endTick;
public MidiVelocityAction(ProjectFrame frame) {
super(frame, "sequencer.midi.velocity");
}
public void modifyNoteEvents(Collection<NoteEvent> events) {
startTick = Long.MAX_VALUE;
endTick = Long.MIN_VALUE;
for (NoteEvent note : events) {
if (note.getStartTick() < startTick) {
startTick = note.getStartTick();
}
if (note.getStartTick() > endTick) {
endTick = note.getStartTick();
}
}
super.modifyNoteEvents(events);
}
protected JComponent createGUI() {
return new MidiVelocityActionEditor(this);
}
public void modifyNoteEvent(NoteEvent note) {
int diff = endVelocity - startVelocity;
long dist = endTick - startTick;
int v = startVelocity + (int)Math.round(diff * ((double)(note.getStartTick() - startTick) / dist));
if (v < 1) v = 1; else if (v > 127) v = 127;
note.setVelocity(v);
}
}