Java Swing Tips: 2011

2011/12/22

Dropdown menu button in the JTableHeader

Code

@Override public void mouseClicked(MouseEvent e) {
  JTableHeader header = (JTableHeader) e.getSource();
  JTable table = header.getTable();
  TableColumnModel columnModel = table.getColumnModel();
  int vci = columnModel.getColumnIndexAtX(e.getX());
  int mci = table.convertColumnIndexToModel(vci);
  TableColumn column = table.getColumnModel().getColumn(mci);
  Rectangle r = header.getHeaderRect(vci);
  Container c = (Container) getTableCellRendererComponent(table, "", true, true, -1, vci);
  // if (!isNimbus) {
  //   Insets i = c.getInsets();
  //   r.translate(r.width - i.right, 0);
  // } else {
  r.translate(r.width - BUTTON_WIDTH, 0);
  r.setSize(BUTTON_WIDTH, r.height);
  Point pt = e.getPoint();
  if (c.getComponentCount() > 0 && r.contains(pt) && pop != null) {
    pop.show(header, r.x, r.height);
    JButton b = (JButton) c.getComponent(0);
    b.doClick();
    e.consume();
  }
}

@Override public void mouseExited(MouseEvent e) {
  rolloverIndex = -1;
}

@Override public void mouseMoved(MouseEvent e) {
  JTableHeader header = (JTableHeader) e.getSource();
  JTable table = header.getTable();
  TableColumnModel columnModel = table.getColumnModel();
  int vci = columnModel.getColumnIndexAtX(e.getX());
  int mci = table.convertColumnIndexToModel(vci);
  rolloverIndex = mci;
}

References

Dropdown menu button in the JTableHeader(Japanese)

2011/11/28

JTable group directories first sorting

Code

// > dir /O:GN
// > ls --group-directories-first
class FileGroupComparator extends DefaultFileComparator {
  private static final long serialVersionUID = 1L;
  private final JTable table;
  public FileGroupComparator(JTable table, int column) {
    super(column);
    this.table = table;
  }

  @Override public int compare(File a, File b) {
    int flag = 1;
    List<? extends TableRowSorter.SortKey> keys =
        table.getRowSorter().getSortKeys();
    if (!keys.isEmpty()) {
      TableRowSorter.SortKey sortKey = keys.get(0);
      if (sortKey.getColumn() == column &&
          sortKey.getSortOrder() == SortOrder.DESCENDING) {
        flag = -1;
      }
    }
    if (a.isDirectory() && !b.isDirectory()) {
      return -1 * flag;
    } else if (!a.isDirectory() && b.isDirectory()) {
      return 1 * flag;
    } else {
      return super.compare(a, b);
    }
  }
}

References

JTable group directories first sorting(Japanese)

2011/10/28

fixed width JButtons in bottom right corner of the JPanel

Code

private static JComponent createRightAlignButtonBox2(
  List<JButton> list, final int buttonWidth, int gap) {
  JComponent box = new JPanel() {
    @Override public void updateUI() {
      for (JButton b : list) {
        b.setPreferredSize(null);
      }
      super.updateUI();
      EventQueue.invokeLater(new Runnable() {
        @Override public void run() {
          int maxHeight = list.stream()
            .map(b -> b.getPreferredSize().height)
            .reduce(0, Integer::max);
          Dimension d = new Dimension(buttonWidth, maxHeight);
          for (JButton b : list) {
            b.setPreferredSize(d);
          }
          revalidate();
        }
      });
    }
  };
  box.setLayout(new BoxLayout(box, BoxLayout.X_AXIS));
  box.add(Box.createHorizontalGlue());
  for (JButton b : list) {
    box.add(b);
    box.add(Box.createHorizontalStrut(gap));
  }
  box.setBorder(BorderFactory.createEmptyBorder(gap, 0, gap, 0));
  return box;
}

References

fixed width JButtons in bottom right corner of the JPanel(Japanese)

2011/09/29

JProgressBar in JComboBox

Code

class ProgressCellRenderer extends DefaultListCellRenderer {
  private final JProgressBar bar = new JProgressBar() {
    @Override public Dimension getPreferredSize() {
      return ProgressCellRenderer.this.getPreferredSize();
    }
  };

  @Override public Component getListCellRendererComponent(
      JList list, Object value, int index,
      boolean isSelected, boolean cellHasFocus) {
    if (index < 0 && worker != null && !worker.isDone()) {
      bar.setFont(list.getFont());
      bar.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 0));
      bar.setValue(count);
      return bar;
    } else {
      return super.getListCellRendererComponent(
        list, value, index, isSelected, cellHasFocus);
    }
  }

  @Override public void updateUI() {
    super.updateUI();
    if (bar != null) {
      SwingUtilities.updateComponentTreeUI(bar);
    }
  }
}

// ...
button = new JButton(new AbstractAction("load") {
  @Override public void actionPerformed(ActionEvent e) {
    button.setEnabled(false);
    combo.setEnabled(false);
    combo.removeAllItems();
    worker = new SwingWorker<String, String>() {
      private int max = 30;
      @Override public String doInBackground() throws InterruptedException {
        int current = 0;
        while (current <= max && !isCancelled()) {
          Thread.sleep(50);
          // setProgress(100 * current / max);
          count = 100 * current / max;
          publish("test: "+current);
          current++;
        }
        return "Done";
      }

      @Override protected void process(List<String> chunks) {
        DefaultComboBoxModel m = (DefaultComboBoxModel) combo.getModel();
        for (String s: chunks) {
          m.addElement(s);
        }
        combo.setSelectedIndex(-1);
        combo.repaint();
      }

      @Override public void done() {
        String text = null;
        if (!isCancelled()) {
          combo.setSelectedIndex(0);
        }
        combo.setEnabled(true);
        button.setEnabled(true);
        count = 0;
      }
    };
    worker.execute();
  }
});

References

JProgressBar in JComboBox(Japanese)

2011/08/29

FileSystemTree with JCheckBox

Code

class CheckBoxNodeEditor extends TriStateCheckBox implements TreeCellEditor {
  private final FileSystemView fileSystemView;
  private final JPanel panel = new JPanel(new BorderLayout());
  private DefaultTreeCellRenderer renderer = new DefaultTreeCellRenderer();
  private File file;

  public CheckBoxNodeEditor(FileSystemView fileSystemView) {
    super();
    this.fileSystemView = fileSystemView;
    this.addActionListener(new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        stopCellEditing();
      }
    });
    panel.setFocusable(false);
    panel.setRequestFocusEnabled(false);
    panel.setOpaque(false);
    panel.add(this, BorderLayout.WEST);
    this.setOpaque(false);
  }

  @Override public Component getTreeCellEditorComponent(
      JTree tree, Object value, boolean isSelected, boolean expanded,
      boolean leaf, int row) {
    JLabel l = (JLabel) renderer.getTreeCellRendererComponent(
      tree, value, true, expanded, leaf, row, true);
    l.setFont(tree.getFont());
    setOpaque(false);
    if (value instanceof DefaultMutableTreeNode) {
      this.setEnabled(tree.isEnabled());
      this.setFont(tree.getFont());
      Object userObject = ((DefaultMutableTreeNode) value).getUserObject();
      if (userObject instanceof CheckBoxNode) {
        CheckBoxNode node = (CheckBoxNode) userObject;
        if (node.status == Status.INDETERMINATE) {
          setIcon(new IndeterminateIcon());
        } else {
          setIcon(null);
        }
        file = node.file;
        l.setIcon(fileSystemView.getSystemIcon(file));
        l.setText(fileSystemView.getSystemDisplayName(file));
        setSelected(node.status == Status.SELECTED);
      }
      // panel.add(this, BorderLayout.WEST);
      panel.add(l);
      return panel;
    }
    return l;
  }

  @Override public Object getCellEditorValue() {
    return new CheckBoxNode(file, isSelected() ? Status.SELECTED : Status.DESELECTED);
  }

  @Override public boolean isCellEditable(EventObject e) {
    if (e instanceof MouseEvent && e.getSource() instanceof JTree) {
      MouseEvent me = (MouseEvent) e;
      JTree tree = (JTree) e.getSource();
      TreePath path = tree.getPathForLocation(me.getX(), me.getY());
      Rectangle r = tree.getPathBounds(path);
      if (r == null) {
        return false;
      }
      Dimension d = getPreferredSize();
      r.setSize(new Dimension(d.width, r.height));
      if (r.contains(me.getX(), me.getY())) {
        // if (file == null && System.getProperty("java.version").startsWith("1.7.0")) {
        //   System.out.println("XXX: Java 7, only on first run\n" + getBounds());
        //   setBounds(new Rectangle(0, 0, d.width, r.height));
        // }
        return true;
      }
    }
    return false;
  }

  @Override public void updateUI() {
    super.updateUI();
    if (panel != null) {
      panel.updateUI();
    }
    // 1.6.0_24 bug??? @see 1.7.0 DefaultTreeCellRenderer#updateUI()
    renderer = new DefaultTreeCellRenderer();
  }
// ...

References

2011/07/29

Pause and Resume SwingWorker

Code

class RunAction extends AbstractAction {
  public RunAction() {
    super("run");
  }

  @Override public void actionPerformed(ActionEvent evt) {
    JProgressBar bar1 = new JProgressBar(0, 100);
    JProgressBar bar2 = new JProgressBar(0, 100);
    runButton.setEnabled(false);
    canButton.setEnabled(true);
    pauseButton.setEnabled(true);
    statusPanel.removeAll();
    statusPanel.add(bar1, BorderLayout.NORTH);
    statusPanel.add(bar2, BorderLayout.SOUTH);
    statusPanel.revalidate();
    worker = new SwingWorker<String, Progress>() {
      private final Random r = new Random();
      @Override public String doInBackground() {
        int current = 0;
        int lengthOfTask = 12; //filelist.size();
        publish(new Progress(Component.LOG, "Length Of Task: " + lengthOfTask));
        publish(new Progress(Component.LOG, "\n---------------------------\n"));
        while (current < lengthOfTask && !isCancelled()) {
          publish(new Progress(Component.LOG, "*"));
          if (!bar1.isDisplayable()) {
            return "Disposed";
          }
          try {
            convertFileToSomething();
          } catch (InterruptedException ie) {
            return "Interrupted";
          }
          publish(new Progress(Component.TOTAL, 100 * current / lengthOfTask));
          current++;
        }
        publish(new Progress(Component.LOG, "\n"));
        return "Done";
      }

      private void convertFileToSomething() throws InterruptedException {
        boolean flag = false;
        int current = 0;
        int lengthOfTask = 10 + r.nextInt(50);
        while (current <= lengthOfTask && !isCancelled()) {
          if (isPaused) {
            try {
              Thread.sleep(500);
            } catch (InterruptedException ie) {
              return;
            }
            publish(new Progress(Component.PAUSE, flag));
            flag ^= true;
            continue;
          }
          int iv = 100 * current / lengthOfTask;
          Thread.sleep(20);
          publish(new Progress(Component.FILE, iv + 1));
          current++;
        }
      }

      @Override protected void process(java.util.List<Progress> chunks) {
        for (Progress s: chunks) {
          switch (s.component) {
            case TOTAL: bar1.setValue((Integer) s.value); break;
            case FILE:  bar2.setValue((Integer) s.value); break;
            case LOG:   area.append((String) s.value); break;
            case PAUSE: {
              if ((Boolean) s.value) {
                area.append("*");
              } else {
                try {
                  Document doc = area.getDocument();
                  doc.remove(doc.getLength() - 1, 1);
                } catch (Exception ex) {
                  ex.printStackTrace();
                }
              }
              break;
            }
          }
        }
      }

      @Override public void done() {
        // ...
      }
    };
    worker.execute();
  }
}

// ...
private boolean isPaused = false;
class PauseAction extends AbstractAction {
  public PauseAction() {
    super("pause");
  }

  @Override public void actionPerformed(ActionEvent evt) {
    isPaused = (worker != null && !worker.isCancelled() && !isPaused);
    JButton b = (JButton) evt.getSource();
    b.setText(isPaused ? "resume" : "pause");
  }
}

References

Pause and Resume SwingWorker(Japanese)

2011/06/27

Gradient translucent track JSlider

Code

UIManager.put("Slider.horizontalThumbIcon", new Icon() {
  @Override public void paintIcon(Component c, Graphics g, int x, int y) {}
  @Override public int getIconWidth()  { return 15; }
  @Override public int getIconHeight() { return 64; }
});
UIManager.put("Slider.trackWidth", 64);
UIManager.put("Slider.majorTickLength", 6);

JSlider slider = makeSlider();
slider.setUI(new MetalSliderUI() {
  int[] pallet = makeGradientPallet();
  @Override public void paintTrack(Graphics g) {
    // Color trackColor = !slider.isEnabled()
    //   ? MetalLookAndFeel.getControlShadow() : slider.getForeground();
    boolean leftToRight = true; //MetalUtils.isLeftToRight(slider);
    Color controlDarkShadow = Color.GRAY;
    Color controlHighlight = new Color(200, 255, 200);
    Color controlShadow = new Color(0, 100, 0);

    g.translate(trackRect.x, trackRect.y);

    int trackLeft = 0;
    int trackTop = 0;
    int trackRight = 0;
    int trackBottom = 0;

    // Draw the track
    if (slider.getOrientation() == SwingConstants.HORIZONTAL) {
      trackBottom = (trackRect.height - 1) - getThumbOverhang();
      trackTop = trackBottom - (getTrackWidth() - 1);
      trackRight = trackRect.width - 1;
    } else {
      if (leftToRight) {
        trackLeft = (trackRect.width - getThumbOverhang()) - getTrackWidth();
        trackRight = (trackRect.width - getThumbOverhang()) - 1;
      } else {
        trackLeft = getThumbOverhang();
        trackRight = getThumbOverhang() + getTrackWidth() - 1;
      }
      trackBottom = trackRect.height - 1;
    }

    if (slider.isEnabled()) {
      g.setColor(controlDarkShadow);
      g.drawRect(trackLeft, trackTop,
                (trackRight - trackLeft) - 1, (trackBottom - trackTop) - 1);

      g.setColor(controlHighlight);
      g.drawLine(trackLeft + 1, trackBottom, trackRight, trackBottom);
      g.drawLine(trackRight, trackTop + 1, trackRight, trackBottom);

      g.setColor(controlShadow);
      g.drawLine(trackLeft + 1, trackTop + 1, trackRight - 2, trackTop + 1);
      g.drawLine(trackLeft + 1, trackTop + 1, trackLeft + 1, trackBottom - 2);
    } else {
      g.setColor(controlShadow);
      g.drawRect(trackLeft, trackTop,
                 (trackRight - trackLeft) - 1, (trackBottom - trackTop) - 1);
    }

    // Draw the fill
    int middleOfThumb = 0;
    int fillTop = 0;
    int fillLeft = 0;
    int fillBottom = 0;
    int fillRight = 0;

    if (slider.getOrientation() == SwingConstants.HORIZONTAL) {
      middleOfThumb = thumbRect.x + (thumbRect.width / 2);
      middleOfThumb -= trackRect.x; // To compensate for the g.translate()
      fillTop = !slider.isEnabled() ? trackTop : trackTop + 1;
      fillBottom = !slider.isEnabled() ? trackBottom - 1 : trackBottom - 2;

      if (!drawInverted()) {
        fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
        fillRight = middleOfThumb;
      } else {
        fillLeft = middleOfThumb;
        fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2;
      }
    } else {
      middleOfThumb = thumbRect.y + (thumbRect.height / 2);
      middleOfThumb -= trackRect.y; // To compensate for the g.translate()
      fillLeft = !slider.isEnabled() ? trackLeft : trackLeft + 1;
      fillRight = !slider.isEnabled() ? trackRight - 1 : trackRight - 2;

      if (!drawInverted()) {
        fillTop = middleOfThumb;
        fillBottom = !slider.isEnabled() ? trackBottom - 1 : trackBottom - 2;
      } else {
        fillTop = !slider.isEnabled() ? trackTop : trackTop + 1;
        fillBottom = middleOfThumb;
      }
    }

    if (slider.isEnabled()) {
      g.setColor(slider.getBackground());
      g.drawLine(fillLeft, fillTop, fillRight, fillTop );
      g.drawLine(fillLeft, fillTop, fillLeft, fillBottom );

      double x = (fillRight - fillLeft) / (double) (trackRight - trackLeft);
      g.setColor(getColorFromPallet(pallet, x));
      g.fillRect(fillLeft + 1, fillTop + 1,
                 fillRight - fillLeft, fillBottom - fillTop);
    } else {
      g.setColor(controlShadow);
      g.fillRect(fillLeft, fillTop, fillRight - fillLeft, trackBottom - trackTop);
    }

    int yy = trackTop + (trackBottom - trackTop) / 2;
    for (int i = 10; i >= 0; i--) {
      g.setColor(new Color(1f, 1f, 1f, i * .07f));
      g.drawLine(trackLeft + 2, yy, (trackRight - trackLeft), yy);
      yy--;
    }
    g.translate(-trackRect.x, -trackRect.y);
  }
});

// ...
private static int[] makeGradientPallet() {
  BufferedImage image = new BufferedImage(100, 1, BufferedImage.TYPE_INT_RGB);
  Graphics2D g2  = image.createGraphics();
  Point2D start  = new Point2D.Float(0f, 0f);
  Point2D end    = new Point2D.Float(99f, 0f);
  float[] dist   = {0f, .5f, 1f};
  Color[] colors = {Color.RED, Color.YELLOW, Color.GREEN};
  g2.setPaint(new LinearGradientPaint(start, end, dist, colors));
  g2.fillRect(0, 0, 100, 1);
  int width  = image.getWidth(null);
  int[] pallet = new int[width];
  PixelGrabber pg = new PixelGrabber(image, 0, 0, width, 1, pallet, 0, width);
  try {
    pg.grabPixels();
  } catch (Exception e) {
    e.printStackTrace();
  }
  return pallet;
}

private static Color getColorFromPallet(int[] pallet, float x) {
  int i = (int) (pallet.length * x);
  int max = pallet.length-1;
  int index = i < 0 ? 0 : i > max ? max : i;
  int pix = pallet[index] & 0x00_FF_FF_FF | (0x64 << 24);
  return new Color(pix, true);
}

References

2011/05/30

Translucent image caption using JTextArea, OverlayLayout, EaseInOut

Code

private int delay = 4;
private int count = 0;

@Override public void mouseEntered(MouseEvent e) {
  if (animator != null && animator.isRunning() || yy == textArea.getPreferredSize().height) {
    return;
  }
  double h = (double) textArea.getPreferredSize().height;
  animator = new Timer(delay, new ActionListener() {
    @Override public void actionPerformed(ActionEvent e) {
      double a = easeInOut(++count / h);
      yy = (int) (.5 + a * h);
      textArea.setBackground(new Color(0f, 0f, 0f, (float) (.6 * a)));
      if (yy >= textArea.getPreferredSize().height) {
        yy = textArea.getPreferredSize().height;
        animator.stop();
      }
      revalidate();
      repaint();
    }
  });
  animator.start();
}

@Override public void mouseExited(MouseEvent e) {
  if (animator != null && animator.isRunning() ||
     contains(e.getPoint()) && yy == textArea.getPreferredSize().height) return;
  double h = (double) textArea.getPreferredSize().height;
  animator = new Timer(delay, new ActionListener() {
    @Override public void actionPerformed(ActionEvent e) {
      double a = easeInOut(--count / h);
      yy = (int) (.5 + a * h);
      textArea.setBackground(new Color(0f, 0f, 0f, (float) (.6 * a)));
      if (yy <= 0) {
        yy = 0;
        animator.stop();
      }
      revalidate();
      repaint();
    }
  });
  animator.start();
}

// @see Math: EaseIn EaseOut, EaseInOut and Beziér Curves | Anima Entertainment GmbH
// http://www.anima-entertainment.de/math-easein-easeout-easeinout-and-bezier-curves
public double easeInOut(double t) {
  // range: 0.0 <= t <= 1.0
  if (t < .5) {
    return .5 * Math.pow(t * 2d, 3d);
  } else {
    return .5 * (Math.pow(t * 2d - 2d, 3d) + 2d);
  }
}

public static double intpow(double x, int n) {
  double aux = 1d;
  if (n < 0) {
    throw new IllegalArgumentException("n must be a positive integer");
  }
  for (; n > 0; x *= x, n >>>= 1) {
    if ((n & 1) != 0) {
      aux *= x;
    }
  }
  return aux;
}

References

2011/05/24

Change border of focused row in JTable

Code

enum Type { START, END }

class DotBorder extends EmptyBorder {
  private static final BasicStroke DASHED = new BasicStroke(
      1f, BasicStroke.CAP_BUTT, BasicStroke.JOIN_MITER,
      10f, new float[] {1f}, 0f);
  private static final Color DOT_COLOR = new Color(200, 150, 150);
  public final Set<Type> type = EnumSet.noneOf(Type.class);

  protected DotBorder(int top, int left, int bottom, int right) {
    super(top, left, bottom, right);
  }

  @Override public boolean isBorderOpaque() {
    return true;
  }

  @Override public void paintBorder(
      Component c, Graphics g, int x, int y, int w, int h) {
    Graphics2D g2 = (Graphics2D) g.create();
    g2.translate(x, y);
    g2.setPaint(DOT_COLOR);
    g2.setStroke(DASHED);
    if (type.contains(Type.START)) {
      g2.drawLine(0, 0, 0, h);
    }
    if (type.contains(Type.END)) {
      g2.drawLine(w - 1, 0, w - 1, h);
    }
    if (c.getBounds().x % 2 == 0) {
      g2.drawLine(0, 0, w, 0);
      g2.drawLine(0, h - 1, w, h - 1);
    } else {
      g2.drawLine(1, 0, w, 0);
      g2.drawLine(1, h - 1, w, h - 1);
    }
    g2.dispose();
  }
}

References

Change border of focused row in JTable(Japanese)

2011/04/19

Transparent JTableHeader

Code

class TransparentHeader extends JLabel implements TableCellRenderer {
  private final Border b = BorderFactory.createCompoundBorder(
      BorderFactory.createMatteBorder(0, 0, 1, 0, Color.BLACK),
      BorderFactory.createEmptyBorder(2, 2, 1, 2));
  private final Color alphaZero = new Color(0x0, true);
  @Override public Component getTableCellRendererComponent(
      JTable table, Object value, boolean isSelected, boolean hasFocus,
      int row, int column) {
    this.setText(Objects.toString(value, ""));
    this.setHorizontalAlignment(SwingConstants.CENTER);
    this.setOpaque(false);
    this.setBackground(alphaZero);
    this.setForeground(Color.BLACK);
    this.setBorder(b);
    return this;
  }
}

References

2011/03/10

CheckBoxes in JTable Cell

Code

class CheckBoxesPanel extends JPanel {
  private static final String OSNAME = System.getProperty("os.name");
  protected final String[] title = {"r", "w", "x"};
  public JCheckBox[] buttons;
  public CheckBoxesPanel() {
    super();
    setOpaque(false);
    setBackground(new Color(0x0, true));
    setLayout(new BoxLayout(this, BoxLayout.X_AXIS));
    initButtons();
  }

  protected void initButtons() {
    buttons = new JCheckBox[title.length];
    for (int i = 0; i < buttons.length; i++) {
      JCheckBox b = new JCheckBox(title[i]);
      b.setOpaque(false);
      b.setFocusable(false);
      b.setRolloverEnabled(false);
      b.setBackground(new Color(0x0, true));
      buttons[i] = b;
      add(b);
      add(Box.createHorizontalStrut(5));
    }
  }

  protected void updateButtons(Object v) {
    if ("Windows 7".equals(OSNAME)) { //Windows aero?
      removeAll();
      initButtons();
    }
    Integer i = (Integer) (v == null ? 0 : v);
    buttons[0].setSelected((i & (1 << 2)) != 0);
    buttons[1].setSelected((i & (1 << 1)) != 0);
    buttons[2].setSelected((i & (1 << 0)) != 0);
  }
}

class CheckBoxesRenderer extends CheckBoxesPanel
                         implements TableCellRenderer, Serializable {
  public CheckBoxesRenderer() {
    super();
    setName("Table.cellRenderer");
  }

  @Override public Component getTableCellRendererComponent(JTable table,
      Object value, boolean isSelected, boolean hasFocus, int row, int column) {
    updateButtons(value);
    return this;
  }

  public static class UIResource extends CheckBoxesRenderer implements UIResource {}
}

class CheckBoxesEditor extends CheckBoxesPanel
                       implements TableCellEditor, Serializable {
  public CheckBoxesEditor() {
    ActionListener al = new ActionListener() {
      @Override public void actionPerformed(ActionEvent e) {
        fireEditingStopped();
      }
    };
    ActionMap am = getActionMap();
    for (int i = 0; i < buttons.length; i++) {
      final JCheckBox b = buttons[i];
      b.addActionListener(al);
      am.put(title[i], new AbstractAction(title[i]) {
        @Override public void actionPerformed(ActionEvent e) {
          b.setSelected(!b.isSelected());
          fireEditingStopped();
        }
      });
    }
    InputMap im = getInputMap(JComponent.WHEN_IN_FOCUSED_WINDOW);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_R, 0), title[0]);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_W, 0), title[1]);
    im.put(KeyStroke.getKeyStroke(KeyEvent.VK_X, 0), title[2]);
  }

  @Override public Component getTableCellEditorComponent(JTable table,
        Object value, boolean isSelected, int row, int column) {
    updateButtons(value);
    return this;
  }

  @Override public Object getCellEditorValue() {
    int i = 0;
    if (buttons[0].isSelected()) i |= 1 << 2;
    if (buttons[1].isSelected()) i |= 1 << 1;
    if (buttons[2].isSelected()) i |= 1 << 0;
    return i;
  }

  // Copied from AbstractCellEditor
  protected EventListenerList listenerList = new EventListenerList();
  transient protected ChangeEvent changeEvent = null;
  // ...

References

2011/02/28

Highlight entire JTree row on selection

Code

class RowSelectionTree extends JTree {
  private static final Color SELC = new Color(100, 150, 200);
  private Handler handler;

  @Override protected void paintComponent(Graphics g) {
    g.setColor(getBackground());
    g.fillRect(0, 0, getWidth(), getHeight());
    if (getSelectionCount() > 0) {
      g.setColor(SELC);
      for (int i : getSelectionRows()) {
        Rectangle r = getRowBounds(i);
        g.fillRect(0, r.y, getWidth(), r.height);
      }
    }
    super.paintComponent(g);
    if (getLeadSelectionPath() != null) {
      Rectangle r = getRowBounds(getRowForPath(getLeadSelectionPath()));
      g.setColor(hasFocus() ? SELC.darker() : SELC);
      g.drawRect(0, r.y, getWidth() - 1, r.height - 1);
    }
  }

  @Override public void updateUI() {
    removeFocusListener(handler);
    super.updateUI();
    setUI(new BasicTreeUI() {
      @Override public Rectangle getPathBounds(JTree tree, TreePath path) {
        if (tree != null && treeState != null) {
          return getPathBounds(path, tree.getInsets(), new Rectangle());
        }
        return null;
      }

      private Rectangle getPathBounds(
          TreePath path, Insets insets, Rectangle bounds) {
        Rectangle rect = treeState.getBounds(path, bounds);
        if (rect != null) {
          rect.width = tree.getWidth();
          rect.y += insets.top;
        }
        return rect;
      }
    });
    handler = new Handler();
    addFocusListener(handler);
    setCellRenderer(handler);
    setOpaque(false);
  }

  static class Handler extends DefaultTreeCellRenderer implements FocusListener {
    @Override public Component getTreeCellRendererComponent(
        JTree tree, Object value, boolean selected, boolean expanded,
        boolean leaf, int row, boolean hasFocus) {
      JLabel l = (JLabel) super.getTreeCellRendererComponent(
          tree, value, selected, expanded, leaf, row, hasFocus);
      l.setBackground(selected ? SELC : tree.getBackground());
      l.setOpaque(true);
      return l;
    }

    @Override public void focusGained(FocusEvent e) {
      e.getComponent().repaint();
    }

    @Override public void focusLost(FocusEvent e) {
      e.getComponent().repaint();
    }
  }
}

References

TreeRowSelection(Japanese)

2011/02/03

Translucent JInternalFrame (Nimbus)

Code

JPanel p1 = new JPanel();
p1.setOpaque(false);

JPanel p2 = new JPanel() {
  @Override protected void paintComponent(Graphics g) {
    // super.paintComponent(g);
    g.setColor(new Color(100, 50, 50, 100));
    g.fillRect(0, 0, getWidth(), getHeight());
  }
};

JPanel p3 = new JPanel() {
  @Override protected void paintComponent(Graphics g) {
    Graphics2D g2 = (Graphics2D) g;
    // g2.setPaint(new Color(100, 120, 100, 100));
    g2.setPaint(texture);
    g2.fillRect(0, 0, getWidth(), getHeight());
  }
};

protected JInternalFrame createFrame(JPanel panel) {
  MyInternalFrame frame = new MyInternalFrame();
  if (panel != null) {
    frame.setContentPane(panel);
    // JButton button = new JButton("button");
    // button.setOpaque(false);
    panel.add(new JLabel("label"));
    panel.add(new JButton("button"));
  }
  desktop.add(frame);
  frame.setOpaque(false);
  frame.setVisible(true);
  // ...

References

2011/01/20

JTable RowHeader

Code

class RowHeaderList<E> extends JList<E> {
  private final JTable table;
  private final ListSelectionModel tableSelection;
  private final ListSelectionModel rListSelection;
  private int rollOverRowIndex = -1;
  private int pressedRowIndex  = -1;

  public RowHeaderList(ListModel<E> model, JTable table) {
    super(model);
    this.table = table;
    setFixedCellHeight(table.getRowHeight());
    setCellRenderer(new RowHeaderRenderer<E>(table.getTableHeader()));
    RollOverListener rol = new RollOverListener();
    addMouseListener(rol);
    addMouseMotionListener(rol);

    tableSelection = table.getSelectionModel();
    rListSelection = getSelectionModel();
  }

  class RowHeaderRenderer<E> extends JLabel
                             implements ListCellRenderer<E> {
    private final JTableHeader header; // = table.getTableHeader();
    public RowHeaderRenderer(JTableHeader header) {
      super();
      this.header = header;
      this.setOpaque(true);
      // this.setBorder(UIManager.getBorder("TableHeader.cellBorder"));
      this.setBorder(BorderFactory.createMatteBorder(
          0, 0, 1, 2, Color.GRAY.brighter()));
      this.setHorizontalAlignment(CENTER);
      this.setForeground(header.getForeground());
      this.setBackground(header.getBackground());
      this.setFont(header.getFont());
    }

    @Override public Component getListCellRendererComponent(
        JList<? extends E> list, E value, int index,
        boolean isSelected, boolean cellHasFocus) {
      if (index == pressedRowIndex) {
        setBackground(Color.GRAY);
      } else if (index == rollOverRowIndex) {
        setBackground(Color.WHITE);
      } else if (isSelected) {
        setBackground(Color.GRAY.brighter());
      } else {
        setForeground(header.getForeground());
        setBackground(header.getBackground());
      }
      setText(Objects.toString(value, ""));
      return this;
    }
  }
  // ...
}

References

JTable RowHeader(Japanese)

Google Tag Manager

2011/12/22

Code

References

2011/11/28

Code

References

2011/10/28

Code

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2011/09/29

Code

References

2011/08/29

Code

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2011/07/29

Code

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2011/06/27

Code

References

2011/05/30

Code

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2011/05/24

Code

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2011/04/19

Code

References

2011/03/10

Code

References

2011/02/28

Code

References

2011/02/03

Code

References

2011/01/20

Code

References