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          * Transposes the current note element the given number of halftones.
  92          * @param halftones     the number of halftones to transpose - positive for up, negative for down
  93          */
  94         public void transpose(int halftones) {
  95                 note.transpose(halftones);
  96                 update();
  97         }
  98
  99         /**
 100          * Draws the string that shows the note's properties.
 101          * @param g     The Graphics object used to draw the strings.
 102          */
 103         public void paintComponent(Graphics g)
 104         {
 105                 super.paintComponent(g);
 106                 if (!(g instanceof Graphics2D)) return;
 107                 Graphics2D g2 = (Graphics2D)g;
 108                 g2.setColor(textColor);
 109                 g2.setFont(new Font("Helvetica", Font.PLAIN, 8));
 110         /*
 111                 switch(columns) {
 112                         case 0:
 113                         case 1:
 114                         ...
 115                 }
 116         */
 117
 118                 g2.drawString(notePitch, 1, 8);
 119                 g2.drawString("" + noteVelocity, 21, 8);
 120         }
 121
 122         /**
 123          * Calculate what the string that shows the note properties should look like.
 124          */
 125         protected void calculateString(){
 126
 127                 noteVelocity = "";
 128                 notePitch = "";
 129                 if(note == null) return;
 130
 131                 int pitch = note.getPitch();
 132                 switch (pitch % 12) {
 133                         case  0: notePitch = "C";  break;
 134                         case  1: notePitch = "C#"; break;
 135                         case  2: notePitch = "D";  break;
 136                         case  3: notePitch = "D#"; break;
 137                         case  4: notePitch = "E";  break;
 138                         case  5: notePitch = "F";  break;
 139                         case  6: notePitch = "F#"; break;
 140                         case  7: notePitch = "G";  break;
 141                         case  8: notePitch = "G#"; break;
 142                         case  9: notePitch = "A";  break;
 143                         case 10: notePitch = "A#"; break;
 144                         case 11: notePitch = "B";  break;
 145                 }
 146                 notePitch += pitch / 12 - 1;
 147                 noteVelocity = ""+note.getVelocity();
 148         }
 149
 150
 151         /**
 152          * Asks the MooTrackView that the note element is painted on to remove this element and the note.
 153          */
 154         protected void remove(){
 155                 mtv.removeNote(this);
 156         }
 157
 158         /**
 159          * Updates the graphical content of the element and repaints it.
 160          */
 161         public void update() {
 162                 calculateString();
 163                 repaint();
 164         }
 165
 166         /**
 167          * Layout this changed elemnt.
 168          */
 169         protected void newLayout(){
 170                 mtv.layoutElement(this,true);
 171         }
 172
 173         /**
 174          * Listener that checks the mouse actions on this element.
 175          */
 176         class MAdapter extends MouseAdapter {
 177
 178                 /**
 179                  * Selects the note if
 180                  */
 181                 public void mouseEntered(MouseEvent e) {
 182                         if (mtv.isLeftMouseButtonPressed()) select();
 183                 }
 184
 185                 /**
 186                  * If left mouse button is clicked, selects the note and plays it.
 187                  */
 188                 public void mouseClicked(MouseEvent e) {
 189                         if (SwingUtilities.isLeftMouseButton(e) && !e.isControlDown()) {
 190                                 select();
 191                                 // Play the note
 192                         }
 193                 }
 194
 195                 /**
 196                  * Checks if the mouse is pressed.
 197                  * Increases the pitch or velocity if the right mouse button is pressed while holding CTRL.
 198                  * Decreases the pitch or velocity if the left mouse button is pressed while holding CTRL.
 199                  * @param e the event recieved.
 200                  */
 201                 public void mousePressed(MouseEvent e) {
 202                         if (e.isControlDown()) {
 203                                 if (pitchRect.contains(e.getPoint())) {
 204                                         if (SwingUtilities.isRightMouseButton(e)) {
 205                                                 note.transpose(1);
 206                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 207                                                 note.transpose(-1);
 208                                         }
 209                                         Moosique.setEdited();
 210                                         calculateString();
 211                                         repaint();
 212                                 } else if (veloRect.contains(e.getPoint())) {
 213                                         if (SwingUtilities.isRightMouseButton(e)) {
 214                                                 note.setVelocity(note.getVelocity() + 1);
 215                                         } else if (SwingUtilities.isLeftMouseButton(e)) {
 216                                                 note.setVelocity(note.getVelocity() - 1);
 217                                         }
 218                                         Moosique.setEdited();
 219                                         calculateString();
 220                                         repaint();
 221                                 }
 222                         } else maybeShowPopup(e);
 223                 }
 224
 225                 public void mouseReleased(MouseEvent e) {
 226                         maybeShowPopup(e);
 227                 }
 228
 229                 /**
 230                  * Shows the menu if an OS-specific popup-trigger was activated.
 231                  */
 232                 private void maybeShowPopup(MouseEvent e) {
 233                         if (e.isPopupTrigger() && !e.isControlDown()) {
 234                                 if (!selected || mtv.isTheOnlySelected((MooNoteElement)e.getComponent())) popup.show(e.getComponent(), e.getX(), e.getY());
 235                                 else mtv.showSelectionPopup(e.getComponent(), e.getX(), e.getY());
 236                         }
 237                 }
 238         }
 239
 240         /**
 241          * Listens on the actions made to the popupmenu.
 242          */
 243         class PopupListener implements ActionListener {
 244                 public void actionPerformed(ActionEvent e) {
 245                         Object source = e.getSource();
 246                         if (source == popupProp) {
 247                                 new MooDialog(note);
 248                                 newLayout();
 249                         } else if (source == popupRemove) {
 250                                 remove();
 251                         } else if (source == popupTranspOctUp) {
 252                                 transpose(12);
 253                         } else if (source == popupTranspOctDown) {
 254                                 transpose(-12);
 255                         }
 256                 }
 257         }
 258 }