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 import javax.swing.event.ChangeEvent;
   9 import javax.swing.event.ChangeListener;
  10
  11 /**
  12  * シーケンサの現在位置（分：秒）を表示するビュー
  13  */
  14 public class SequencerTimeView extends JPanel implements ChangeListener {
  15         /**
  16          * シーケンサの現在位置（分：秒）を表示するビューを構築します。
  17          * @param model MIDIシーケンサモデル
  18          */
  19         public SequencerTimeView(MidiSequencerModel model) {
  20                 setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
  21                 add(timePositionLabel);
  22                 add(timeLengthLabel);
  23                 (this.model = model).addChangeListener(this);
  24         }
  25         @Override
  26         public void stateChanged(ChangeEvent e) {
  27                 timeLengthLabel.setTimeInSecond(model.getMaximum()/1000);
  28                 timePositionLabel.setTimeInSecond(model.getValue()/1000);
  29         }
  30         private MidiSequencerModel model;
  31         private SequencerTimeView.TimeLabel timePositionLabel = new TimePositionLabel();
  32         private SequencerTimeView.TimeLabel timeLengthLabel = new TimeLengthLabel();
  33         private static abstract class TimeLabel extends JLabel {
  34                 /**
  35                  * 時間の値（秒）
  36                  */
  37                 private int valueInSec;
  38                 /**
  39                  * 時間の値を秒単位で設定します。
  40                  * @param sec 秒単位の時間
  41                  */
  42                 public void setTimeInSecond(int sec) {
  43                         if(valueInSec != sec) setText(toTimeString(valueInSec = sec));
  44                 }
  45                 /**
  46                  * 時間の値を文字列に変換します。
  47                  * @param sec 秒単位の時間
  48                  * @return 変換結果（分：秒）
  49                  */
  50                 protected String toTimeString(int sec) {
  51                         return String.format("%02d:%02d", sec/60, sec%60);
  52                 }
  53         }
  54         private static class TimePositionLabel extends SequencerTimeView.TimeLabel {
  55                 public TimePositionLabel() {
  56                         setFont( getFont().deriveFont(getFont().getSize2D() + 4) );
  57                         setForeground( new Color(0x80,0x00,0x00) );
  58                         setToolTipText("Time position - 現在位置（分：秒）");
  59                         setText(toTimeString(0));
  60                 }
  61         }
  62         private static class TimeLengthLabel extends SequencerTimeView.TimeLabel {
  63                 public TimeLengthLabel() {
  64                         setToolTipText("Time length - 曲の長さ（分：秒）");
  65                         setText(toTimeString(0));
  66                 }
  67                 @Override
  68                 protected String toTimeString(int sec) {
  69                         return "/"+super.toTimeString(sec);
  70                 }
  71         }
  72 }