MooNoteElement.java

   1 import javax.swing.*;
   2 import java.awt.*;
   3 import java.awt.event.*;
   4
   5 /**
   6  * Graphical representation of a MIDI note.
   7  *
   8  * @author  Andersson, Andreen, Lanneskog, Pehrson
   9  * @version 1
  10  */
  11
  12 public class MooNoteElement extends JPanel {
  13
  14         private MooTrackView mtv;
  15         private MooNote note;
  16         private JPopupMenu popup;
  17         private JMenuItem popupRemove, popupProp, popupTranspOctUp, popupTranspOctDown;
  18         private Rectangle pitchRect, veloRect;
  19         private String notePitch, noteVelocity;
  20         private boolean selected = false;
  21         public Color textColor;
  22         public static final Color bgColor = new Color(160, 218, 255);
  23         public static final Color invBgColor = new Color(96, 38, 0);
  24
  25         /**
  26          * Creates a new note element.
  27          * @param parent        The MooTrackView that this element will be painted on.
  28          * @param mn            the note that will be graphically represented
  29          */
  30         public MooNoteElement (MooTrackView parent, MooNote mn) {
  31                 mtv = parent;
  32                 note = mn;
  33                 calculateString();
  34                 addMouseListener(new MAdapter());
  35                 setBorder(BorderFactory.createLineBorder(Color.black));
  36                 setBackground(bgColor);
  37                 textColor = Color.black;
  38
  39                 // Defines coordinates.
  40                 pitchRect = new Rectangle(0, 0, 15, 10);
  41                 veloRect = new Rectangle(20, 0, 40, 10);
  42
  43                 // Creates pop-up menu.
  44                 popup = new JPopupMenu();
  45                 PopupListener pList = new PopupListener();
  46                 popupProp = new JMenuItem("Preferences...");
  47                 popupProp.addActionListener(pList);
  48                 popup.add(popupProp);
  49                 popupRemove = new JMenuItem("Remove");
  50                 popupRemove.addActionListener(pList);
  51                 popup.add(popupRemove);
  52                 popupTranspOctUp = new JMenuItem("Transpose one octave up");
  53                 popupTranspOctUp.addActionListener(pList);
  54                 popup.add(popupTranspOctUp);
  55                 popupTranspOctDown = new JMenuItem("Transpose one octave down");
  56                 popupTranspOctDown.addActionListener(pList);
  57                 popup.add(popupTranspOctDown);
  58         }
  59
  60         /**
  61          * Returns the note of this element.
  62          * @return the note
  63          */
  64         public MooNote getNote() {
  65                 return note;
  66         }
  67
  68         /**
  69          * Selects the current NoteElement.
  70          */
  71         public void select() {
  72                 selected = true;
  73                 mtv.selectNote(this);
  74                 setBackground(invBgColor);
  75                 textColor = Color.white;
  76                 repaint();
  77         }
  78
  79         /**
  80          * Deselects the current NoteElement.
  81          */
  82         public void deselect() {
  83                 selected = false;
  84                 // mtv.deselectNote(this);
  85                 setBackground(bgColor);
  86                 textColor = Color.black;
  87                 repaint();
  88         }
  89
  90         /**
  91          * Draws the string that shows the note's properties.
  92          * @param g     The Graphics object used to draw the strings.
  93          */
  94         public void paintComponent(Graphics g)
  95         {
  96                 super.paintComponent(g);
  97                 if (!(g instanceof Graphics2D)) return;
  98                 Graphics2D g2 = (Graphics2D)g;
  99                 g2.setColor(textColor);
 100                 g2.setFont(new Font("Helvetica", Font.PLAIN, 8));
 101         /*
 102                 switch(columns) {
 103                         case 0:
 104                         case 1:
 105                         ...
 106                 }
 107         */
 108
 109                 g2.drawString(notePitch, 1, 8);
 110                 g2.drawString("" + noteVelocity, 21, 8);
 111         }
 112
 113         /**
 114          * Calculate what the string that shows the note properties should look like.
 115          */
 116         protected void calculateString(){
 117
 118                 noteVelocity = "";
 119                 notePitch = "";
 120                 if(note == null) return;
 121
 122                 int pitch = note.getPitch();
 123                 switch (pitch % 12) {
 124                         case  0: notePitch = "C";  break;
 125                         case  1: notePitch = "C#"; break;
 126                         case  2: notePitch = "D";  break;
 127                         case  3: notePitch = "D#"; break;
 128                         case  4: notePitch = "E";  break;
 129                         case  5: notePitch = "F";  break;
 130                         case  6: notePitch = "F#"; break;
 131                         case  7: notePitch = "G";  break;
 132                         case  8: notePitch = "G#"; break;
 133                         case  9: notePitch = "A";  break;
 134                         case 10: notePitch = "A#"; break;
 135                         case 11: notePitch = "B";  break;
 136                 }
 137                 notePitch += pitch / 12 - 1;
 138                 noteVelocity = ""+note.getVelocity();
 139         }
 140
 141
 142         /**
 143          * Asks the MooTrackView that the note element is painted on to remove this element and the note.
 144          */
 145         protected void remove(){
 146                 mtv.removeNote(this);
 147         }
 148
 149         /**
 150          * Updates the graphical content of the element and repaints it.
 151          */
 152         public void update() {
 153                 calculateString();
 154                 repaint();
 155         }
 156
 157         /**
 158          * layout this changed elemnt
 159          */
 160         protected void newLayout(){
 161                 mtv.layoutElement(this,true);
 162         }
 163         /**
 164          * Listener that checks the mouse actions on this element.
 165          */
 166         class MAdapter extends MouseAdapter {
 167
 168                 /**
 169                  * If left mouse button is clicked, selects the note and plays it.
 170                  */
 171                 public void mouseClicked(MouseEvent e) {
 172                         if (SwingUtilities.isLeftMouseButton(e) && !e.isControlDown()) {
 173                                 select();
 174                                 // Play the note
 175                         }
 176                 }
 177
 178                 /**
 179                  * Checks if the mouse is pressed.
 180                  * Increases the pitch or velocity if the right mouse button is pressed while holding CTRL.
 181                  * Decreases the pitch or velocity if the left mouse button is pressed while holding CTRL.
 182                  * @param e the event recieved.
 183                  */
 184                 public void mousePressed(MouseEvent e) {
 185                         if (e.isControlDown()) {
 186                                 if (pitchRect.contains(e.getPoint())) {
 187                                         if (SwingUtilities.isRightMouseButton(e)) {
 188                                                 note.transpose(1);
 189                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 190                                                 note.transpose(-1);
 191                                         }
 192                                         Moosique.setEdited();
 193                                         calculateString();
 194                                         repaint();
 195                                 } else if (veloRect.contains(e.getPoint())) {
 196                                         if (SwingUtilities.isRightMouseButton(e)) {
 197                                                 note.setVelocity(note.getVelocity() + 1);
 198                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 199                                                 note.setVelocity(note.getVelocity() - 1);
 200                                         }
 201                                         Moosique.setEdited();
 202                                         calculateString();
 203                                         repaint();
 204                                 }
 205                         } else maybeShowPopup(e);
 206                 }
 207
 208                 public void mouseReleased(MouseEvent e) {
 209                         maybeShowPopup(e);
 210                 }
 211
 212                 /**
 213                  * Shows the menu if an OS-specific popup-trigger was activated.
 214                  */
 215                 private void maybeShowPopup(MouseEvent e) {
 216                         if (e.isPopupTrigger() && !e.isControlDown()) {
 217                                 if (!selected || mtv.isTheOnlySelected((MooNoteElement)e.getComponent())) popup.show(e.getComponent(), e.getX(), e.getY());
 218                                 else mtv.showSelectionPopup(e.getComponent(), e.getX(), e.getY());
 219                         }
 220                 }
 221         }
 222
 223         /**
 224          * Listens on the actions made to the popupmenu.
 225          */
 226         class PopupListener implements ActionListener {
 227                 public void actionPerformed(ActionEvent e) {
 228                         Object source = e.getSource();
 229                         if (source == popupProp) {
 230                                 new MooDialog(note);
 231                                 newLayout();
 232                         } else if (source == popupRemove) {
 233                                 remove();
 234                         } else if (source == popupTranspOctUp) {
 235                                 note.transpose(12);
 236                                 update();
 237                         } else if (source == popupTranspOctDown) {
 238                                 note.transpose(-12);
 239                                 update();
 240                         }
 241                 }
 242         }
 243 }