Extend JComponent to draw custom shape - Java 2D Graphics

Java examples for 2D Graphics:Shape

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Description

Extend JComponent to draw custom shape

Demo Code

import java.awt.*;
import javax.swing.*;

public class FaceBean extends JComponent {
    private int mMouthWidth = 90;
    private boolean mSmile = true;

    @Override/*from  www  .j  av a 2 s. co  m*/
    public void paint(Graphics g) {
        Graphics2D g2 = (Graphics2D) g;
        g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
                RenderingHints.VALUE_ANTIALIAS_ON);
        // Face
        int w = getWidth();
        int h = getHeight();
        int pad = 12;
        int cw = w - pad * 2;
        int ch = h - pad * 2;
        g2.setColor(getBackground());
        g2.fillArc(pad, pad, cw, ch, 0, 360);
        g2.setColor(getForeground());
        g2.drawArc(pad, pad, cw, ch, 0, 360);
        // Mouth
        int sw = cw / 2;
        int sh = ch / 2;
        if (mSmile == true)
            g2.drawArc(w / 2 - sw / 2, h / 2 - sh / 2, sw, sh,
                    270 - mMouthWidth / 2, mMouthWidth);
        else
            g2.drawArc(w / 2 - sw / 2, h / 2 + sh / 3, sw, sh,
                    90 - mMouthWidth / 2, mMouthWidth);
        // Eyes
        int er = 4;
        g2.fillArc(w / 2 - cw * 1 / 8 - er / 2, h / 2 - ch / 4 - er, er,
                er, 0, 360);
        g2.fillArc(w / 2 + cw * 1 / 8 - er / 2, h / 2 - ch / 4 - er, er,
                er, 0, 360);
    }

    public int getMouthWidth() {
        return mMouthWidth;
    }

    public void setMouthWidth(int mw) {
        mMouthWidth = mw;
        repaint();
    }

    public void smile() {
        mSmile = true;
        repaint();
    }

    public void frown() {
        mSmile = false;
        repaint();
    }
}

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 * modification, are permitted provided that the following conditions
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 *
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 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Oracle or the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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