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July 27, 2015 11:30
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import java.awt.*; | |
import java.awt.geom.*; | |
import javax.swing.*; | |
public class BevelRoundedCornerButtonTest { | |
public JComponent makeUI() { | |
JPanel p = new JPanel(); | |
p.add(new JButton("Default JButton")); | |
p.add(new BevelRoundedCornerButton("Rounded Corner Button")); | |
return p; | |
} | |
public static void main(String[] args) { | |
EventQueue.invokeLater(new Runnable() { | |
@Override public void run() { | |
createAndShowGUI(); | |
} | |
}); | |
} | |
public static void createAndShowGUI() { | |
JFrame f = new JFrame(); | |
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); | |
f.getContentPane().add(new BevelRoundedCornerButtonTest().makeUI()); | |
f.setSize(320, 240); | |
f.setLocationRelativeTo(null); | |
f.setVisible(true); | |
} | |
} | |
class BevelRoundedCornerButton extends JButton { | |
private static final int ARC_WIDTH = 16; | |
private static final int ARC_HEIGHT = 16; | |
protected static final int FOCUS_STROKE = 2; | |
protected Shape shape; | |
protected Shape border; | |
protected Shape base; | |
public BevelRoundedCornerButton(String text) { | |
super(text); | |
} | |
@Override public void updateUI() { | |
super.updateUI(); | |
setContentAreaFilled(false); | |
setFocusPainted(false); | |
setBackground(new Color(250, 250, 250)); | |
initShape(); | |
} | |
protected void initShape() { | |
if (!getBounds().equals(base)) { | |
base = getBounds(); | |
int a = FOCUS_STROKE / 2; | |
int w = getWidth() - 1; | |
int h = getHeight() - 1; | |
shape = new RoundRectangle2D.Float( | |
0, 0, w, h, ARC_WIDTH, ARC_HEIGHT); | |
border = new RoundRectangle2D.Float( | |
a, a, w - a, h - a, ARC_WIDTH, ARC_HEIGHT); | |
} | |
} | |
@Override protected void paintComponent(Graphics g) { | |
initShape(); | |
Graphics2D g2 = (Graphics2D) g.create(); | |
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, | |
RenderingHints.VALUE_ANTIALIAS_ON); | |
if (getModel().isArmed()) { | |
g2.setColor(new Color(230, 230, 230)); | |
g2.fill(shape); | |
} else { | |
g2.setColor(getBackground()); | |
g2.fill(shape); | |
} | |
g2.dispose(); | |
super.paintComponent(g); | |
} | |
@Override protected void paintBorder(Graphics g) { | |
Graphics2D g2 = (Graphics2D) g.create(); | |
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, | |
RenderingHints.VALUE_ANTIALIAS_ON); | |
g2.setStroke(new BasicStroke(2f)); | |
Rectangle r = border.getBounds(); | |
r.grow(ARC_WIDTH + FOCUS_STROKE / 2, FOCUS_STROKE / 2); | |
Path2D.Double lb = new Path2D.Double(); | |
lb.moveTo(r.x + r.width, r.y); | |
lb.lineTo(r.x + r.width, r.y + r.height); | |
lb.lineTo(r.x, r.y + r.height); | |
lb.closePath(); | |
g2.setColor(Color.BLACK); | |
g2.setClip(lb); | |
g2.draw(border); | |
g2.setColor(Color.WHITE); | |
Area area = new Area(shape); | |
area.subtract(new Area(lb)); | |
g2.setClip(area); | |
g2.draw(border); | |
g2.dispose(); | |
} | |
@Override public boolean contains(int x, int y) { | |
return shape == null ? false : shape.contains(x, y); | |
} | |
} |
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