How to create a JButton extension with rounded corners?

Question

This is a continuation of the question "Java rounded Swing JButton" . I was looking for the javax.swing.JButton extension that inherits all the runtime behavior and just cancels the drawing of corners.

Using the code provided by noah.w on the sun forums page, the result is as follows:

alt text http://i40.tinypic.com/107qfkp.jpg

I would like to have the same gradient in the background, on the mouse over the change, etc. Does anyone know how to do this?

Code that creates a Java Swing window from an image:

public class XrButton extends JButton implements MouseListener {

    private static final long serialVersionUID = 9032198251140247116L;

    String text;
    boolean mouseIn = false;

    public XrButton(String s) {
        super(s);
        text = s;
        setBorderPainted(false);
        addMouseListener(this);
        setContentAreaFilled(false);
    }

    @Override
    public void paintComponent(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        if (getModel().isPressed()) {
            g.setColor(g.getColor());
            g2.fillRect(3, 3, getWidth() - 6, getHeight() - 6);
        }
        super.paintComponent(g);

        if (mouseIn)
            g2.setColor(Color.red);
        else
            g2.setColor(new Color(128, 0, 128));

        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);
        g2.setStroke(new BasicStroke(1.2f));
        g2.draw(new RoundRectangle2D.Double(1, 1, (getWidth() - 3),
                (getHeight() - 3), 12, 8));
        g2.setStroke(new BasicStroke(1.5f));
        g2.drawLine(4, getHeight() - 3, getWidth() - 4, getHeight() - 3);

        g2.dispose();
    }

    public static void main(String[] args) {
        JFrame frame = new JFrame();
        frame.getContentPane().setLayout(new FlowLayout());

        XrButton xrButton = new XrButton("XrButton");
        JButton jButton = new JButton("JButton");

        frame.getContentPane().add(xrButton);

        frame.getContentPane().add(jButton);

        frame.setSize(150, 150);
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setVisible(true);
    }

    public void mouseClicked(MouseEvent e) {
    }

    public void mouseEntered(MouseEvent e) {
        mouseIn = true;
    }

    public void mouseExited(MouseEvent e) {
        mouseIn = false;
    }

    public void mousePressed(MouseEvent e) {
    }

    public void mouseReleased(MouseEvent e) {
    }

Answer 1

, 2 :

1. .

2. ButtonUI . Synch LAF

-

Answer 2

, Swing, "":

https://substance.dev.java.net/

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Answer 3

, (Metal LAF !)

@Override
    protected void paintComponent(Graphics g)
    {
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHints(new RenderingHints(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON));
        Shape firstClip = g.getClip();
        RoundRectangle2D rect = new RoundRectangle2D.Double();
        double arc = Math.ceil(getSize().getHeight()/3);
        rect.setRoundRect(0, 0, Math.ceil(getSize().getWidth()), Math.ceil(getSize().getHeight()), arc, arc);
        Area secondClip = new Area(getBounds());
        secondClip.subtract(new Area(rect));
        Area finalClip = new Area(firstClip);
        finalClip.subtract(secondClip);
        g2.setClip(finalClip);
        super.paintComponent(g2);
        Color[] gradients;
        if(getModel().isRollover())
        {
            gradients = new Color[] { new Color(184, 207, 229), new Color(122, 138, 153), new Color(184, 207, 229) };
        }
        else
        {
            gradients = new Color[] { new Color(122, 138, 153) };
        }
        for(int i = 0; i < gradients.length; i++)
        {
            arc -= 2;
            g2.setColor(gradients[i]);
            g2.drawRoundRect(i+1, i+1, (int)Math.ceil(getSize().getWidth()-2)-(i*2), (int)Math.ceil(getSize().getHeight()-2)-(i*2), (int)arc, (int)arc);
        }
    }

: http://i.stack.imgur.com/unZuc.png

Answer 4

:

• , , (, , mouseIn ).
• , , , GradientPaint, .

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