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JMusic - Java Music Library
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/*
Copyright (C) 2000 Andrew Brown
This program 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 any
later version.
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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
package jm.gui.cpn;
import jm.JMC;
import jm.music.data.Note;
import jm.music.data.Phrase;
import java.awt.*;
import java.awt.event.*;
public class JStaveActionHandler implements JMC, MouseListener, MouseMotionListener, ActionListener { //, KeyListener {
private JGrandStave theApp;
private int selectedNote = -1;
private boolean topTimeSelected = false, keySelected = false;
private int clickedPosY, clickedPosX, storedPitch = 72;
private double[] rhythmValues = {104.0, 103.0, 102.0, 101.5, 101.0, 100.75, 100.5, 100.25, 0.0, 0.25, 0.5, 0.75, 1.0, 1.5, 2.0, 3.0, 4.0};
// constructor
JStaveActionHandler(JGrandStave stave) {
theApp = stave;
// allow for negative rv's as a rest flag
}
// Mouse Listener stubs
public void mouseClicked(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
//mouseMotionListener stubs
public void mouseMoved(MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
if (!theApp.editable) return;
// add a new note if necessary
// no notes yet?
Integer lastX;
if (theApp.notePositions.size() < 2) {
lastX = new Integer(theApp.getTotalBeatWidth());
} else {
lastX = (Integer) theApp.notePositions.elementAt(theApp.notePositions.size() - 2);
}
if (e.getX() > (lastX.intValue() + 15) && e.getX() < theApp.getTotalBeatWidth() + 50) {
// new note close to mouse click pitch
int newPitch = 85 - (e.getY() + theApp.staveDelta - theApp.bPos) / 2;
// make sure it is not an accidental
int[] blackNotes = {1, 3, 6, 8, 10};
boolean white = true;
for (int k = 0; k < blackNotes.length; k++) {
if (newPitch % 12 == blackNotes[k]) newPitch--;
}
Note n = new Note(newPitch, 1.0);
Phrase phr = theApp.getPhrase();
phr.addNote(n);
theApp.repaint();
// set cursor
theApp.setCursor(new Cursor(Cursor.HAND_CURSOR));
// get ready to drag it
selectedNote = phr.size() - 1;
//theApp.playCurrentNote(selectedNote);
clickedPosY = e.getY() + theApp.staveDelta;
clickedPosX = e.getX();
} else {
// check for a click on a note - head?
for (int i = 0; i < theApp.notePositions.size(); i += 2) {
Integer tempX = (Integer) theApp.notePositions.elementAt(i);
Integer tempY = (Integer) theApp.notePositions.elementAt(i + 1);
if (e.getX() > tempX.intValue() && e.getX() < tempX.intValue() + 15 && e.getY() +
theApp.staveDelta > tempY.intValue() + 22 && e.getY() +
theApp.staveDelta < tempY.intValue() + 35) {
// set cursor
theApp.setCursor(new Cursor(Cursor.MOVE_CURSOR));
selectedNote = i / 2;
clickedPosY = e.getY() + theApp.staveDelta;
clickedPosX = e.getX();
//System.out.println("Hit note "+ selectedNote);
// get out of loop ASAP
i = theApp.notePositions.size();
}
}
}
if (selectedNote < 0) { // no note clicked on or yet made
// check which note to insert
for (int j = 0; j < theApp.notePositions.size() - 2; j += 2) {
Integer tempX = (Integer) theApp.notePositions.elementAt(j);
Integer nextTempX = (Integer) theApp.notePositions.elementAt(j + 2);
if (e.getX() > tempX.intValue() + 15 && e.getX() < nextTempX.intValue()) {
// change cursor
theApp.setCursor(new Cursor(Cursor.HAND_CURSOR));
// add new note close to mouse clicked pitch
int newPitch = 85 - (e.getY() + theApp.staveDelta - theApp.bPos) / 2;
// make sure it is not an accidental
int[] blackNotes = {1, 3, 6, 8, 10};
boolean white = true;
for (int k = 0; k < blackNotes.length; k++) {
if (newPitch % 12 == blackNotes[k]) newPitch--;
}
Note n = new Note(newPitch, 1.0);
Phrase phr = theApp.getPhrase();
phr.getNoteList().insertElementAt(n, j / 2 + 1);
theApp.repaint();
// play and update variables for dragging it
selectedNote = j / 2 + 1;
clickedPosY = e.getY() + theApp.staveDelta;
clickedPosX = e.getX();
// get out of the loop
j = theApp.notePositions.size();
}
}
}
// check if the time signature is clicked
int theSpace = theApp.rightMargin + theApp.clefWidth + theApp.keySigWidth;
if (e.getX() > theSpace && e.getX() < theSpace + 10) {
theApp.setCursor(new Cursor(Cursor.MOVE_CURSOR));
topTimeSelected = true;
clickedPosY = e.getY() + theApp.staveDelta;
clickedPosX = e.getX();
//System.out.println("Time Signature clicked!");
}
// check if the key signature is clicked
int theClefSpace = theApp.rightMargin + theApp.clefWidth;
int minKeySpace = 10;
if (theApp.keySigWidth > minKeySpace) minKeySpace = theApp.keySigWidth;
if (e.getX() > theClefSpace - 10 && e.getX() < theClefSpace + minKeySpace) {
theApp.setCursor(new Cursor(Cursor.MOVE_CURSOR));
keySelected = true;
clickedPosY = e.getY() + theApp.staveDelta;
clickedPosX = e.getX();
//System.out.println("Key Signature clicked!");
}
}
public void mouseDragged(MouseEvent e) {
if (!theApp.editable) return;
//theApp.dragNote(e.getX(), e.getY());
if (selectedNote >= 0) {
//System.out.println("Dragging "+ selectedNote);
Phrase phr = theApp.getPhrase();
Note n = phr.getNote(selectedNote);
// move note down
if (e.getY() + theApp.staveDelta > clickedPosY + 2 && theApp.getPhrase().getNote(selectedNote).getPitch() != REST) {
n.setPitch(n.getPitch() - 1);
if (n.getPitch() < theApp.getMinPitch()) n.setPitch(theApp.getMinPitch());
// update the current mouse location
clickedPosY += 2;
// update the visual display
theApp.repaint();
// keep pitch to reinstate it after displaying a rest
storedPitch = n.getPitch();
}
// move note up
if (e.getY() + theApp.staveDelta < clickedPosY - 2 && theApp.getPhrase().getNote(selectedNote).getPitch() != REST) {
n.setPitch(n.getPitch() + 1);
if (n.getPitch() > theApp.getMaxPitch()) n.setPitch(theApp.getMaxPitch());
//theApp.playCurrentNote(selectedNote);
clickedPosY -= 2;
theApp.repaint();
storedPitch = n.getPitch();
}
// move note right - increase RV
if (e.getX() > clickedPosX + 6) {
double tempRV = n.getRhythmValue();
int tempPitch = n.getPitch();
// use +100 numbers for rests
if (tempPitch == REST) tempRV = tempRV + 100;
int currRVindex = rhythmValues.length;
// find current rhythm value and update RV
for (int i = 0; i < rhythmValues.length - 1; i++) {
if (tempRV == rhythmValues[i]) n.setRhythmValue(rhythmValues[i + 1]);
}
clickedPosX = e.getX();
// update pitch
if (n.getRhythmValue() > 100.0) {
n.setPitch(REST);
n.setRhythmValue(n.getRhythmValue() - 100);
// update duration value
n.setDuration(n.getRhythmValue() * 0.9);
} else {
if (tempPitch == REST) n.setPitch(storedPitch);
}
theApp.repaint();
}
// move note left - decrease RV
if (e.getX() < clickedPosX - 6) {
double tempRV = n.getRhythmValue();
int tempPitch = n.getPitch();
// use +100 numbers for rests
if (tempPitch == REST) tempRV = tempRV + 100;
// find current rhythm value position in the array
int currRVindex = 0;
for (int i = 0; i < rhythmValues.length; i++) {
if (tempRV == rhythmValues[i]) currRVindex = i;
}
// update rv
if (currRVindex > 0) {
n.setRhythmValue(rhythmValues[currRVindex - 1]);
clickedPosX = e.getX();
// update pitch
if (n.getRhythmValue() > 100.0) {
n.setPitch(REST);
n.setRhythmValue(n.getRhythmValue() - 100);
// update duration value
n.setDuration(n.getRhythmValue() * 0.9);
} else {
if (tempPitch == REST) n.setPitch(storedPitch);
}
theApp.repaint();
}
}
}
// check for time signature change
if (topTimeSelected) {
//increase?
if (e.getY() + theApp.staveDelta < clickedPosY - 4) {
theApp.setMetre(theApp.getMetre() + 1.0);
if (theApp.getMetre() > 9.0) theApp.setMetre(9.0);
if (theApp.getMetre() < 1.0) theApp.setMetre(1.0);
clickedPosY -= 4;
theApp.repaint();
theApp.updateChange();
}
//decrease
if (e.getY() + theApp.staveDelta > clickedPosY + 4) {
theApp.setMetre(theApp.getMetre() - 1.0);
if (theApp.getMetre() < 1.0) theApp.setMetre(1.0);
if (theApp.getMetre() > 9.0) theApp.setMetre(9.0);
clickedPosY += 4;
theApp.repaint();
theApp.updateChange();
}
}
// check for key signature change
if (keySelected) {
//increase?
if (e.getY() + theApp.staveDelta < clickedPosY - 4) {
theApp.setKeySignature(theApp.getKeySignature() + 1);
if (theApp.getKeySignature() > 7) theApp.setKeySignature(7);
clickedPosY -= 4;
theApp.repaint();
theApp.updateChange();
}
//decrease
if (e.getY() + theApp.staveDelta > clickedPosY + 4) {
theApp.setKeySignature(theApp.getKeySignature() - 1);
if (theApp.getKeySignature() < -7) theApp.setKeySignature(-7);
clickedPosY += 4;
theApp.repaint();
theApp.updateChange();
}
}
}
public void mouseReleased(MouseEvent e) {
if (!theApp.editable) return;
// delete note if necessary
for (int i = 0; i < theApp.getPhrase().getNoteList().size(); i++) {
if (theApp.getPhrase().getNote(i).getRhythmValue() == 0.0) {
theApp.getPhrase().getNoteList().removeElementAt(i);
}
}
// unflag any note being selected
theApp.repaint();
theApp.updateChange();
selectedNote = -1;
topTimeSelected = false;
keySelected = false;
theApp.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
}
public void actionPerformed(ActionEvent e) { // 1.1 Event Model. Trap button clicks.
}
// key listener stubs
/*
public void keyPressed(KeyEvent e) {}
public void keyReleased(KeyEvent e) {}
public void keyTyped(KeyEvent e) {
if(e.getKeyChar() == '\b') theApp.deleteLastNote();
}
*/
}