Java Swing Tips: JFrame

Showing posts with label JFrame. Show all posts

2022/02/28

Create a new JFrame when the JTabbedPane tab is dropped outside the frame

Code

class TabDragSourceListener implements DragSourceListener {
  @Override public void dragEnter(DragSourceDragEvent e) {
    e.getDragSourceContext().setCursor(DragSource.DefaultMoveDrop);
  }

  @Override public void dragExit(DragSourceEvent e) {
    e.getDragSourceContext().setCursor(DragSource.DefaultMoveNoDrop);
  }

  @Override public void dragDropEnd(DragSourceDropEvent e) {
    Component c = e.getDragSourceContext().getComponent();
    JRootPane root = ((JComponent) c).getRootPane();
    Class<GhostGlassPane> clz = GhostGlassPane.class;
    Optional.ofNullable(root.getGlassPane())
        .filter(clz::isInstance).map(clz::cast)
        .ifPresent(p -> p.setVisible(false));
    boolean dropSuccess = e.getDropSuccess();
    Window w = SwingUtilities.getWindowAncestor(c);
    boolean outOfFrame = !w.getBounds().contains(e.getLocation());
    if (dropSuccess && outOfFrame && c instanceof DnDTabbedPane) {
      DnDTabbedPane src = (DnDTabbedPane) c;
      int index = src.dragTabIndex;
      final Component cmp = src.getComponentAt(index);
      final Component tab = src.getTabComponentAt(index);
      final String title = src.getTitleAt(index);
      final Icon icon = src.getIconAt(index);
      final String tip = src.getToolTipTextAt(index);
      src.remove(index);
      DnDTabbedPane tabs = new DnDTabbedPane();
      tabs.setTabLayoutPolicy(JTabbedPane.SCROLL_TAB_LAYOUT);
      tabs.addTab(title, icon, cmp, tip);
      tabs.setTabComponentAt(0, tab);
      JFrame frame = new JFrame();
      frame.getContentPane().add(tabs);
      frame.setSize(320, 240);
      frame.setLocation(e.getLocation());
      frame.setVisible(true);
    }
  }

  @Override public void dropActionChanged(DragSourceDragEvent e) {
    /* not needed */
  }

  @Override public void dragOver(DragSourceDragEvent e) {
    /* not needed */
  }
}

References

Create a new JFrame when the JTabbedPane tab is dropped outside the frame(Japanese)

2020/09/30

Creating StatusBar with size grips to resize the JFrame

Code

class ResizeWindowListener extends MouseInputAdapter {
  private final Rectangle rect = new Rectangle();
  private final Point startPt = new Point();

  @Override public void mousePressed(MouseEvent e) {
    Component p = SwingUtilities.getRoot(e.getComponent());
    if (p instanceof Window) {
      startPt.setLocation(e.getPoint());
      rect.setBounds(p.getBounds());
    }
  }

  @Override public void mouseDragged(MouseEvent e) {
    Component p = SwingUtilities.getRoot(e.getComponent());
    if (!rect.isEmpty() && p instanceof Window) {
      Point pt = e.getPoint();
      rect.width += pt.x - startPt.x;
      rect.height += pt.y - startPt.y;
      p.setBounds(rect);
    }
  }
}

// Size Grip
// Create a GripIcon with a JLabel and position it at the right end(BorderLayout.EAST) of the StatusBar
class BottomRightCornerLabel extends JLabel {
  private transient MouseInputListener handler;

  protected BottomRightCornerLabel() {
    super(new BottomRightCornerIcon());
  }

  @Override public void updateUI() {
    removeMouseListener(handler);
    removeMouseMotionListener(handler);
    super.updateUI();
    handler = new ResizeWindowListener();
    addMouseListener(handler);
    addMouseMotionListener(handler);
    setCursor(Cursor.getPredefinedCursor(Cursor.SE_RESIZE_CURSOR));
  }
}

// Grip Icon
// Draw six rectangles to create a Windows 10 like icon
class BottomRightCornerIcon implements Icon {
  private static final Color SQUARE_COLOR = new Color(160, 160, 160, 160);

  @Override public void paintIcon(Component c, Graphics g, int x, int y) {
    int diff = 3;
    Graphics2D g2 = (Graphics2D) g.create();
    g2.translate(getIconWidth() - diff * 3 - 1, getIconHeight() - diff * 3 - 1);

    int firstRow = 0;
    int secondRow = firstRow + diff;
    int thirdRow = secondRow + diff;

    int firstColumn = 0;
    drawSquare(g2, firstColumn, thirdRow);

    int secondColumn = firstColumn + diff;
    drawSquare(g2, secondColumn, secondRow);
    drawSquare(g2, secondColumn, thirdRow);

    int thirdColumn = secondColumn + diff;
    drawSquare(g2, thirdColumn, firstRow);
    drawSquare(g2, thirdColumn, secondRow);
    drawSquare(g2, thirdColumn, thirdRow);

    g2.dispose();
  }

  @Override public int getIconWidth() {
    return 16;
  }

  @Override public int getIconHeight() {
    return 20;
  }

  private void drawSquare(Graphics g, int x, int y) {
    g.setColor(SQUARE_COLOR);
    g.fillRect(x, y, 2, 2);
  }
}

References

2014/02/26

Translucent JFrame repaint

Code

DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm:ss");
JLabel label = new JLabel(LocalTime.now().format(formatter), SwingConstants.CENTER);
Timer timer = new Timer(100, null);
timer.addActionListener(e -> {
  label.setText(LocalTime.now().format(formatter));
  Container parent = SwingUtilities.getUnwrappedParent(label);
  if (Objects.nonNull(parent) && parent.isOpaque()) {
    repaintWindowAncestor(label);
  }
});
// ...
private void repaintWindowAncestor(JComponent c) {
  JRootPane root = c.getRootPane();
  if (root == null) {
    return;
  }
  Rectangle r = SwingUtilities.convertRectangle(c, c.getBounds(), root);
  root.repaint(r.x, r.y, r.width, r.height);
}

References

Translucent JFrame repaint(Japanese)

2010/06/15

Translucent JFrame

Code

JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame();
// com.sun.awt.AWTUtilities.setWindowOpacity(frame, .5f);
com.sun.awt.AWTUtilities.setWindowOpaque(frame, false); // 6u14
// 1.7.0 frame.setBackground(new Color(0, 0, 0, 0));
frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
JPanel p = new JPanel();
p.add(new JButton("JButton"));
p.setBackground(new Color(.5f, .8f, .5f, .5f));
frame.getContentPane().add(p);
frame.setSize(320, 240);
frame.setLocationRelativeTo(null);
frame.setVisible(true);

References

2010/05/10

Custom Decorated TitleBar JFrame

Code

class ResizeWindowListener extends MouseAdapter {
  private Rectangle startSide = null;
  private final JFrame frame;
  public ResizeWindowListener(JFrame frame) {
    this.frame = frame;
  }

  @Override public void mousePressed(MouseEvent e) {
    startSide = frame.getBounds();
  }

  @Override public void mouseDragged(MouseEvent e) {
    if (startSide == null) return;
    Component c = e.getComponent();
    if (c == topleft) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == top) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
    } else if (c == topright) {
      startSide.y += e.getY();
      startSide.height -= e.getY();
      startSide.width += e.getX();
    } else if (c == left) {
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == right) {
      startSide.width += e.getX();
    } else if (c == bottomleft) {
      startSide.height += e.getY();
      startSide.x += e.getX();
      startSide.width -= e.getX();
    } else if (c == bottom) {
      startSide.height += e.getY();
    } else if (c == bottomright) {
      startSide.height += e.getY();
      startSide.width += e.getX();
    }
    frame.setBounds(startSide);
  }
}

References

2009/11/13

add JInternalFrame to Undecorated JFrame

Code

JInternalFrame internal = new JInternalFrame("...");
BasicInternalFrameUI ui = (BasicInternalFrameUI) internal.getUI();
Component title = ui.getNorthPane();
for (MouseMotionListener l: title.getListeners(MouseMotionListener.class)) {
  title.removeMouseMotionListener(l);
}
DragWindowListener dwl = new DragWindowListener();
title.addMouseListener(dwl);
title.addMouseMotionListener(dwl);
JPanel p = new JPanel(new BorderLayout());
p.add(new JScrollPane(new JTree()));
p.add(new JButton(new AbstractAction("close") {
  @Override public void actionPerformed(ActionEvent e) {
    Window w = SwingUtilities.windowForComponent((Component) e.getSource());
    // w.dispose();
    w.getToolkit().getSystemEventQueue().postEvent(
      new WindowEvent(w, WindowEvent.WINDOW_CLOSING));
  }
}), BorderLayout.SOUTH);
internal.getContentPane().add(p);
internal.setVisible(true);

KeyboardFocusManager focusManager = KeyboardFocusManager.getCurrentKeyboardFocusManager();
focusManager.addPropertyChangeListener(e -> {
  String prop = e.getPropertyName();
  if ("activeWindow".equals(prop)) {
    try {
      internal.setSelected(Objects.nonNull(e.getNewValue()));
    } catch (PropertyVetoException ex) {
      throw new IllegalStateException(ex);
    }
  }
});

References

add JInternalFrame to Undecorated JFrame(Japanese)

Google Tag Manager

2022/02/28

Create a new JFrame when the JTabbedPane tab is dropped outside the frame

Code

References

2020/09/30

Creating StatusBar with size grips to resize the JFrame

Code

References

2014/02/26

Translucent JFrame repaint

Code

References

2010/06/15

Translucent JFrame

Code

References

2010/05/10

Custom Decorated TitleBar JFrame

Code

References

2009/11/13

add JInternalFrame to Undecorated JFrame

Code

References