src/camidion/chordhelper/mididevice/SequencerTimeView.java

   1 package camidion.chordhelper.mididevice;
   2
   3 import java.awt.Color;
   4
   5 import javax.swing.BoxLayout;
   6 import javax.swing.JLabel;
   7 import javax.swing.JPanel;
   8
   9 /**
  10  * シーケンサの現在位置（分：秒）を表示するビュー
  11  */
  12 public class SequencerTimeView extends JPanel {
  13         private static abstract class TimeLabel extends JLabel {
  14                 { setTimeInSecond(0); }
  15                 protected String toTimeString(int sec) {
  16                         int min = sec/60;
  17                         return String.format("%02d:%02d", min, sec - min * 60);
  18                 }
  19                 private int valueInSec;
  20                 private void setTimeInSecond(int sec) {
  21                         setText(toTimeString(valueInSec = sec));
  22                 }
  23                 private void changeTimeInSecond(int sec) {
  24                         if(valueInSec != sec) setTimeInSecond(sec);
  25                 }
  26         }
  27         private TimeLabel timePositionLabel = new TimeLabel() {
  28                 {
  29                         setFont( getFont().deriveFont(getFont().getSize2D() + 4) );
  30                         setForeground( new Color(0x80,0x00,0x00) );
  31                         setToolTipText("Time position - 現在位置（分：秒）");
  32                 }
  33         };
  34         private TimeLabel timeLengthLabel = new TimeLabel() {
  35                 { setToolTipText("Time length - 曲の長さ（分：秒）"); }
  36                 protected String toTimeString(int sec) {
  37                         return "/"+super.toTimeString(sec);
  38                 }
  39         };
  40         /**
  41          * シーケンサの現在位置と曲の長さを（分：秒）で表示するビューを構築します。
  42          * @param model MIDIシーケンサモデル
  43          */
  44         public SequencerTimeView(MidiSequencerModel model) {
  45                 setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
  46                 add(timePositionLabel);
  47                 add(timeLengthLabel);
  48                 model.addChangeListener(e->{
  49                         Object source = e.getSource();
  50                         if( source instanceof MidiSequencerModel ) {
  51                                 MidiSequencerModel sourceModel = (MidiSequencerModel)source;
  52                                 timeLengthLabel.changeTimeInSecond(sourceModel.getMaximum()/1000);
  53                                 timePositionLabel.changeTimeInSecond(sourceModel.getValue()/1000);
  54                         }
  55                 });
  56         }
  57 }