src/camidion/chordhelper/midieditor/TimeSignatureSelecter.java

   1 package camidion.chordhelper.midieditor;
   2
   3 import javax.sound.midi.MetaMessage;
   4 import javax.swing.JComboBox;
   5 import javax.swing.JLabel;
   6 import javax.swing.JPanel;
   7 import javax.swing.JSpinner;
   8 import javax.swing.SpinnerNumberModel;
   9
  10 /**
  11  * 拍子選択ビュー
  12  */
  13 public class TimeSignatureSelecter extends JPanel {
  14         protected SpinnerNumberModel upperTimesigModel = new SpinnerNumberModel(4, 1, 32, 1);
  15         private JSpinner upperTimesigView = new JSpinner(upperTimesigModel) {
  16                 { setToolTipText("Time signature (upper digit) - 拍子の分子"); }
  17         };
  18         protected JComboBox<String> lowerTimesigView = new JComboBox<String>() {
  19                 {
  20                         setToolTipText("Time signature (lower digit) - 拍子の分母");
  21                         for(int i=0; i<6; i++) addItem("/"+(1<<i)); setSelectedIndex(2);
  22                 }
  23         };
  24         private static class TimeSignatureLabel extends JLabel {
  25                 { setToolTipText("Time signature - 拍子"); }
  26                 private byte upper = -1;
  27                 private byte lowerIndex = -1;
  28                 public void setTimeSignature(byte upper, byte lowerIndex) {
  29                         if( this.upper == upper && this.lowerIndex == lowerIndex ) return;
  30                         setText("<html><font size=\"+1\">"+upper+"/"+(1<<lowerIndex)+"</font></html>");
  31                         this.upper = upper;
  32                         this.lowerIndex = lowerIndex;
  33                 }
  34         }
  35         private TimeSignatureLabel timesigValueLabel = new TimeSignatureLabel();
  36         public TimeSignatureSelecter() {
  37                 add(upperTimesigView);
  38                 add(lowerTimesigView);
  39                 add(timesigValueLabel);
  40                 setEditable(true);
  41         }
  42         public byte[] getByteArray() {
  43                 byte upper = upperTimesigModel.getNumber().byteValue();
  44                 byte lowerIndex = (byte)lowerTimesigView.getSelectedIndex();
  45                 return new byte[] { upper, lowerIndex, (byte)(96 >> lowerIndex), 8 };
  46         }
  47         protected void updateTimesigValueLabel() {
  48                 timesigValueLabel.setTimeSignature(
  49                         upperTimesigModel.getNumber().byteValue(),
  50                         (byte)lowerTimesigView.getSelectedIndex()
  51                 );
  52         }
  53         public void setValue(byte upper, byte lowerIndex) {
  54                 upperTimesigModel.setValue(upper);
  55                 lowerTimesigView.setSelectedIndex(lowerIndex);
  56                 timesigValueLabel.setTimeSignature(upper, lowerIndex);
  57         }
  58         public void setValue(byte[] data) {
  59                 if(data == null) clear(); else setValue(data[0], data[1]);
  60         }
  61         public void setValueAt(SequenceTickIndex tickIndex, long tickPosition) {
  62                 MetaMessage msg = tickIndex.lastMetaMessageAt(
  63                         SequenceTickIndex.MetaMessageType.TIME_SIGNATURE,
  64                         tickPosition
  65                 );
  66                 setValue(msg==null ? null : msg.getData());
  67         }
  68         private boolean editable;
  69         public boolean isEditable() { return editable; }
  70         public void setEditable(boolean editable) {
  71                 this.editable = editable;
  72                 upperTimesigView.setVisible(editable);
  73                 lowerTimesigView.setVisible(editable);
  74                 timesigValueLabel.setVisible(!editable);
  75                 if(!editable) updateTimesigValueLabel();
  76         }
  77         public void clear() {
  78                 upperTimesigModel.setValue(4);
  79                 lowerTimesigView.setSelectedIndex(2);
  80                 updateTimesigValueLabel();
  81         }
  82 }