src/camidion/chordhelper/midieditor/TimeSignatureSelecter.java

   1 package camidion.chordhelper.midieditor;
   2
   3 import javax.sound.midi.MetaEventListener;
   4 import javax.sound.midi.MetaMessage;
   5 import javax.swing.JComboBox;
   6 import javax.swing.JLabel;
   7 import javax.swing.JPanel;
   8 import javax.swing.JSpinner;
   9 import javax.swing.SpinnerNumberModel;
  10 import javax.swing.SwingUtilities;
  11
  12 /**
  13  * 拍子選択ビュー
  14  */
  15 public class TimeSignatureSelecter extends JPanel implements MetaEventListener {
  16         SpinnerNumberModel upperTimesigSpinnerModel = new SpinnerNumberModel(4, 1, 32, 1);
  17         private JSpinner upperTimesigSpinner = new JSpinner(
  18                 upperTimesigSpinnerModel
  19         ) {
  20                 {
  21                         setToolTipText("Time signature (upper digit) - 拍子の分子");
  22                 }
  23         };
  24         JComboBox<String> lowerTimesigCombobox = new JComboBox<String>() {
  25                 {
  26                         setToolTipText("Time signature (lower digit) - 拍子の分母");
  27                         for( int i=0; i<6; i++ ) addItem( "/" + (1<<i) );
  28                         setSelectedIndex(2);
  29                 }
  30         };
  31         private class SetValueRunnable implements Runnable {
  32                 byte[] qpm;
  33                 public SetValueRunnable(byte[] qpm) { this.qpm = qpm; }
  34                 @Override
  35                 public void run() { setValue(qpm);}
  36         }
  37         @Override
  38         public void meta(MetaMessage msg) {
  39                 switch(msg.getType()) {
  40                 case 0x58: // Time signature (4 bytes) - 拍子
  41                         if( ! SwingUtilities.isEventDispatchThread() ) {
  42                                 SwingUtilities.invokeLater(new SetValueRunnable(msg.getData()));
  43                                 break;
  44                         }
  45                         setValue(msg.getData());
  46                         break;
  47                 }
  48         }
  49         private class TimeSignatureLabel extends JLabel {
  50                 private byte upper = -1;
  51                 private byte lower_index = -1;
  52                 {
  53                         setToolTipText("Time signature - 拍子");
  54                 }
  55                 public void setTimeSignature(byte upper, byte lower_index) {
  56                         if( this.upper == upper && this.lower_index == lower_index ) {
  57                                 return;
  58                         }
  59                         setText("<html><font size=\"+1\">" + upper + "/" + (1 << lower_index) + "</font></html>");
  60                 }
  61         }
  62         private TimeSignatureLabel timesigValueLabel = new TimeSignatureLabel();
  63         private boolean editable;
  64         public TimeSignatureSelecter() {
  65                 add(upperTimesigSpinner);
  66                 add(lowerTimesigCombobox);
  67                 add(timesigValueLabel);
  68                 setEditable(true);
  69         }
  70         public void clear() {
  71                 upperTimesigSpinnerModel.setValue(4);
  72                 lowerTimesigCombobox.setSelectedIndex(2);
  73         }
  74         public int getUpperValue() {
  75                 return upperTimesigSpinnerModel.getNumber().intValue();
  76         }
  77         public byte getUpperByte() {
  78                 return upperTimesigSpinnerModel.getNumber().byteValue();
  79         }
  80         public int getLowerValueIndex() {
  81                 return lowerTimesigCombobox.getSelectedIndex();
  82         }
  83         public byte getLowerByte() {
  84                 return (byte)getLowerValueIndex();
  85         }
  86         public byte[] getByteArray() {
  87                 byte[] data = new byte[4];
  88                 data[0] = getUpperByte();
  89                 data[1] = getLowerByte();
  90                 data[2] = (byte)( 96 >> getLowerValueIndex() );
  91                 data[3] = 8;
  92                 return data;
  93         }
  94         public void setValue(byte upper, byte lowerIndex) {
  95                 upperTimesigSpinnerModel.setValue( upper );
  96                 lowerTimesigCombobox.setSelectedIndex( lowerIndex );
  97                 timesigValueLabel.setTimeSignature( upper, lowerIndex );
  98         }
  99         public void setValue(byte[] data) {
 100                 if(data == null)
 101                         clear();
 102                 else
 103                         setValue(data[0], data[1]);
 104         }
 105         public boolean isEditable() { return editable; }
 106         public void setEditable( boolean editable ) {
 107                 this.editable = editable;
 108                 upperTimesigSpinner.setVisible(editable);
 109                 lowerTimesigCombobox.setVisible(editable);
 110                 timesigValueLabel.setVisible(!editable);
 111                 if( !editable ) {
 112                         timesigValueLabel.setTimeSignature(getUpperByte(), getLowerByte());
 113                 }
 114         }
 115 }