Java Swing Tips: OverlayLayout

Showing posts with label OverlayLayout. Show all posts

2015/01/29

Show/Hide PasswordField

Code

JPasswordField pf = new JPasswordField(24);
pf.setText("abcdefghijklmn");
pf.setAlignmentX(Component.RIGHT_ALIGNMENT);
AbstractDocument doc = (AbstractDocument) pf.getDocument();
doc.setDocumentFilter(new ASCIIOnlyDocumentFilter());

AbstractButton b = new JToggleButton(new AbstractAction() {
  @Override public void actionPerformed(ActionEvent e) {
    AbstractButton c = (AbstractButton) e.getSource();
    Character ec = c.isSelected() ? 0
        : (Character) UIManager.get("PasswordField.echoChar");
    pf.setEchoChar(ec);
  }
});
b.setFocusable(false);
b.setOpaque(false);
b.setContentAreaFilled(false);
b.setBorder(BorderFactory.createEmptyBorder(0, 0, 0, 4));
b.setAlignmentX(Component.RIGHT_ALIGNMENT);
b.setAlignmentY(Component.CENTER_ALIGNMENT);
b.setIcon(new ColorIcon(Color.GREEN));
b.setRolloverIcon(new ColorIcon(Color.BLUE));
b.setSelectedIcon(new ColorIcon(Color.RED));
b.setRolloverSelectedIcon(new ColorIcon(Color.ORANGE));

JPanel panel = new JPanel() {
  @Override public boolean isOptimizedDrawingEnabled() {
    return false;
  }
};
panel.setLayout(new OverlayLayout(panel));
panel.add(b);
panel.add(pf);

References

Show/Hide PasswordField using CardLayout(Japanese)

2013/01/08

make a translucent JButton

Code

class TranslucentButton extends JButton {
  private static final Color TL = new Color(1f, 1f, 1f, .2f);
  private static final Color BR = new Color(0f, 0f, 0f, .4f);
  private static final Color ST = new Color(1f, 1f, 1f, .2f);
  private static final Color SB = new Color(1f, 1f, 1f, .1f);
  private Color ssc;
  private Color bgc;
  private int r = 8;

  public TranslucentButton(String text) {
    super(text);
  }

  public TranslucentButton(String text, Icon icon) {
    super(text, icon);
  }

  @Override public void updateUI() {
    super.updateUI();
    setContentAreaFilled(false);
    setFocusPainted(false);
    setOpaque(false);
    setForeground(Color.WHITE);
  }

  @Override protected void paintComponent(Graphics g) {
    int x = 0;
    int y = 0;
    int w = getWidth();
    int h = getHeight();
    Graphics2D g2 = (Graphics2D) g.create();
    g2.setRenderingHint(
      RenderingHints.KEY_ANTIALIASING,
      RenderingHints.VALUE_ANTIALIAS_ON);
    Shape area = new RoundRectangle2D.Float(x, y, w - 1, h - 1, r, r);
    ssc = TL;
    bgc = BR;
    ButtonModel m = getModel();
    if (m.isPressed()) {
      ssc = SB;
      bgc = ST;
    } else if (m.isRollover()) {
      ssc = ST;
      bgc = SB;
    }
    g2.setPaint(new GradientPaint(x, y, ssc, x, y + h, bgc, true));
    g2.fill(area);
    g2.setPaint(BR);
    g2.draw(area);
    g2.dispose();
    super.paintComponent(g);
  }
}

// ...
private static String makeTitleWithIcon(URL u, String t, String a) {
  return String.format(
    "<html><p align='%s'><img src='%s' align='%s' />&nbsp;%s", a, u, a, t);
}

private static AbstractButton makeButton(String title) {
  return new JButton(title) {
    @Override public void updateUI() {
      super.updateUI();
      setVerticalAlignment(SwingConstants.CENTER);
      setVerticalTextPosition(SwingConstants.CENTER);
      setHorizontalAlignment(SwingConstants.CENTER);
      setHorizontalTextPosition(SwingConstants.CENTER);
      setMargin(new Insets(2, 8, 2, 8));
      setBorder(BorderFactory.createEmptyBorder(2, 8, 2, 8));
      // setBorderPainted(false);
      setContentAreaFilled(false);
      setFocusPainted(false);
      setOpaque(false);
      setForeground(Color.WHITE);
      setIcon(new TranslucentButtonIcon());
    }
  };
}

References

2012/12/09

Combine five JButtons to make CompoundButton

Code

private static JComponent makeCompoundButton(final Dimension d) {
  JPanel p = new JPanel() {
    @Override public Dimension getPreferredSize() {
      return d;
    }
  };
  p.setLayout(new OverlayLayout(p));
  p.add(new CompoundButton(d, ButtonLocation.NORTH));
  p.add(new CompoundButton(d, ButtonLocation.SOUTH));
  p.add(new CompoundButton(d, ButtonLocation.EAST));
  p.add(new CompoundButton(d, ButtonLocation.WEST));
  p.add(new CompoundButton(d, ButtonLocation.CENTER));
  return p;
}

class CompoundButton extends JButton {
  protected final Color fc = new Color(100, 150, 255, 200);
  protected final Color ac = new Color(230, 230, 230);
  protected final Color rc = Color.ORANGE;
  protected Shape shape;
  protected Shape base = null;
  private final ButtonLocation bl;
  private final Dimension dim;
  public CompoundButton(Dimension d, ButtonLocation bl) {
    super();
    this.dim = d;
    this.bl = bl;
    setIcon(new Icon() {
      @Override public void paintIcon(Component c, Graphics g, int x, int y) {
        Graphics2D g2 = (Graphics2D) g.create();
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                            RenderingHints.VALUE_ANTIALIAS_ON);
        if (getModel().isArmed()) {
          g2.setColor(ac);
          g2.fill(shape);
        } else if (isRolloverEnabled() && getModel().isRollover()) {
          paintFocusAndRollover(g2, rc);
        } else if (hasFocus()) {
          paintFocusAndRollover(g2, fc);
        } else {
          g2.setColor(getBackground());
          g2.fill(shape);
        }
        g2.dispose();
      }

      @Override public int getIconWidth()  {
        return dim.width;
      }

      @Override public int getIconHeight() {
        return dim.height;
      }
    });
    setFocusPainted(false);
    setContentAreaFilled(false);
    setBackground(new Color(250, 250, 250));
    initShape();
  }

  @Override public Dimension getPreferredSize() {
    return dim;
  }

  protected void initShape() {
    if (!getBounds().equals(base)) {
      base = getBounds();
      float ww = getWidth() * .5f;
      float xx = ww * .5f;
      Shape inner = new Ellipse2D.Float(xx, xx, ww, ww);
      if (ButtonLocation.CENTER == bl) {
        shape = inner;
      } else {
        Shape outer = new Arc2D.Float(
          1, 1, getWidth() - 2, getHeight() - 2,
          bl.getStartDegree(), 90f, Arc2D.PIE);
        Area area = new Area(outer);
        area.subtract(new Area(inner));
        shape = area;
      }
    }
  }

  private void paintFocusAndRollover(Graphics2D g2, Color color) {
    g2.setPaint(new GradientPaint(
        0, 0, color, getWidth() - 1, getHeight() - 1, color.brighter(), true));
    g2.fill(shape);
    g2.setColor(getBackground());
  }

  @Override protected void paintComponent(Graphics g) {
    initShape();
    super.paintComponent(g);
  }

  @Override protected void paintBorder(Graphics g) {
    Graphics2D g2 = (Graphics2D) g.create();
    g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                        RenderingHints.VALUE_ANTIALIAS_ON);
    g2.setColor(getForeground());
    g2.draw(shape);
    g2.dispose();
  }

  @Override public boolean contains(int x, int y) {
    // initShape();
    return shape.contains(x, y);
  }
}

References

Combine five JButtons to make CompoundButton(Japanese)

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;
}

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2015/01/29

Show/Hide PasswordField

Code

References

2013/01/08

make a translucent JButton

Code

References

2012/12/09

Combine five JButtons to make CompoundButton

Code

References

2011/05/30

Translucent image caption using JTextArea, OverlayLayout, EaseInOut

Code

References