Android Open Source - Musicdroid Note Symbol

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License

The source code is released under:

GNU General Public License

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Java Source Code

/**
 *  Catroid: An on-device visual programming system for Android devices
 *  Copyright (C) 2010-2013 The Catrobat Team
 *  (<http://developer.catrobat.org/credits>)
 */*from  ww w.jav  a  2s  . c  o  m*/
 *  This program is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU Affero General Public License as
 *  published by the Free Software Foundation, either version 3 of the
 *  License, or (at your option) any later version.
 *
 *  An additional term exception under section 7 of the GNU Affero
 *  General Public License, version 3, is available at
 *  http://developer.catrobat.org/license_additional_term
 *
 *  This program 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 Affero General Public License for more details.
 *
 *  You should have received a copy of the GNU Affero General Public License
 *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
package org.catrobat.musicdroid.pocketmusic.note.symbol;

import org.catrobat.musicdroid.pocketmusic.note.MusicalKey;
import org.catrobat.musicdroid.pocketmusic.note.NoteLength;
import org.catrobat.musicdroid.pocketmusic.note.NoteName;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedList;
import java.util.List;
import java.util.Map;


public class NoteSymbol implements Symbol {

  private Map<NoteName, NoteLength> notes;

  public NoteSymbol() {
    notes = new HashMap<NoteName, NoteLength>();
  }

  public void addNote(NoteName noteName, NoteLength noteLength) {
    notes.put(noteName, noteLength);
  }

  public int size() {
    return notes.size();
  }

  public List<NoteName> getNoteNamesSorted() {
    List<NoteName> noteNames = new LinkedList<NoteName>(notes.keySet());
    Collections.sort(noteNames);
    return noteNames;
  }

  public NoteLength getNoteLength(NoteName noteName) {
    return notes.get(noteName);
  }

  @Override
  public boolean equals(Object obj) {
    if ((obj == null) || !(obj instanceof NoteSymbol)) {
      return false;
    }

    NoteSymbol noteSymbol = (NoteSymbol) obj;

    if (notes.equals(noteSymbol.notes)) {
      return true;
    }

    return false;
  }

  @Override
  public String toString() {
    return "[NoteSymbol] size: " + size();
  }

  public boolean isStemUp(MusicalKey key) {
    List<NoteName> noteNames = new ArrayList<NoteName>(notes.keySet());
    Collections.sort(noteNames);

    NoteName firstNoteName = noteNames.get(0);
    NoteName lastNoteName = noteNames.get(noteNames.size() - 1);

    int distanceFirst = NoteName.calculateDistanceToMiddleLineCountingSignedNotesOnly(key, firstNoteName);
    int distanceLast = NoteName.calculateDistanceToMiddleLineCountingSignedNotesOnly(key, lastNoteName);
    int distance = 0;

    if (Math.abs(distanceFirst) > Math.abs(distanceLast)) {
      distance = distanceFirst;
    } else {
      distance = distanceLast;
    }

    return distance > 0;
  }

    public boolean hasStem() {
        for (NoteLength noteLength : notes.values()) {
            if (noteLength.hasStem()) {
                return true;
            }
        }

        return false;
    }
}

Java Source Code List