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/**
* @version 1.00 1999-09-11
* @author Cay Horstmann
*/
import java.awt.BasicStroke;
import java.awt.Container;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.Point;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.geom.GeneralPath;
import java.awt.geom.Point2D;
import java.awt.geom.Rectangle2D;
import javax.swing.ButtonGroup;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
public class StrokeTest {
public static void main(String[] args) {
JFrame frame = new StrokeTestFrame();
frame.show();
}
}
class StrokeTestFrame extends JFrame implements ActionListener {
public StrokeTestFrame() {
setTitle("StrokeTest");
setSize(400, 400);
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
Container contentPane = getContentPane();
canvas = new StrokePanel();
contentPane.add(canvas, "Center");
JPanel buttonPanel = new JPanel();
buttonPanel.setLayout(new GridLayout(3, 3));
ButtonGroup group1 = new ButtonGroup();
buttCapButton = new JRadioButton("Butt Cap", true);
buttonPanel.add(buttCapButton);
group1.add(buttCapButton);
buttCapButton.addActionListener(this);
roundCapButton = new JRadioButton("Round Cap", false);
buttonPanel.add(roundCapButton);
group1.add(roundCapButton);
roundCapButton.addActionListener(this);
squareCapButton = new JRadioButton("Square Cap", false);
buttonPanel.add(squareCapButton);
group1.add(squareCapButton);
squareCapButton.addActionListener(this);
ButtonGroup group2 = new ButtonGroup();
bevelJoinButton = new JRadioButton("Bevel Join", true);
buttonPanel.add(bevelJoinButton);
group2.add(bevelJoinButton);
bevelJoinButton.addActionListener(this);
miterJoinButton = new JRadioButton("Miter Join", false);
buttonPanel.add(miterJoinButton);
group2.add(miterJoinButton);
miterJoinButton.addActionListener(this);
roundJoinButton = new JRadioButton("Round Join", false);
buttonPanel.add(roundJoinButton);
group2.add(roundJoinButton);
roundJoinButton.addActionListener(this);
ButtonGroup group3 = new ButtonGroup();
solidLineButton = new JRadioButton("Solid Line", true);
buttonPanel.add(solidLineButton);
group3.add(solidLineButton);
solidLineButton.addActionListener(this);
dashedLineButton = new JRadioButton("Dashed Line", false);
buttonPanel.add(dashedLineButton);
group3.add(dashedLineButton);
dashedLineButton.addActionListener(this);
contentPane.add(buttonPanel, "North");
}
public void actionPerformed(ActionEvent event) {
Object source = event.getSource();
if (source == buttCapButton)
canvas.setCap(BasicStroke.CAP_BUTT);
else if (source == roundCapButton)
canvas.setCap(BasicStroke.CAP_ROUND);
else if (source == squareCapButton)
canvas.setCap(BasicStroke.CAP_SQUARE);
else if (source == bevelJoinButton)
canvas.setJoin(BasicStroke.JOIN_BEVEL);
else if (source == miterJoinButton)
canvas.setJoin(BasicStroke.JOIN_MITER);
else if (source == roundJoinButton)
canvas.setJoin(BasicStroke.JOIN_ROUND);
else if (source == solidLineButton)
canvas.setDash(false);
else if (source == dashedLineButton)
canvas.setDash(true);
}
private StrokePanel canvas;
private JRadioButton buttCapButton;
private JRadioButton roundCapButton;
private JRadioButton squareCapButton;
private JRadioButton bevelJoinButton;
private JRadioButton miterJoinButton;
private JRadioButton roundJoinButton;
private JRadioButton solidLineButton;
private JRadioButton dashedLineButton;
}
class StrokePanel extends JPanel implements MouseListener, MouseMotionListener {
public StrokePanel() {
addMouseListener(this);
addMouseMotionListener(this);
points = new Point2D[3];
points[0] = new Point2D.Double(200, 100);
points[1] = new Point2D.Double(100, 200);
points[2] = new Point2D.Double(200, 200);
current = -1;
width = 10.0F;
}
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
GeneralPath path = new GeneralPath();
path.moveTo((float) points[0].getX(), (float) points[0].getY());
for (int i = 1; i < points.length; i++)
path.lineTo((float) points[i].getX(), (float) points[i].getY());
BasicStroke stroke;
if (dash) {
float miterLimit = 10.0F;
float[] dashPattern = { 10F, 10F, 10F, 10F, 10F, 10F, 30F, 10F,
30F, 10F, 30F, 10F, 10F, 10F, 10F, 10F, 10F, 30F };
float dashPhase = 0;
stroke = new BasicStroke(width, cap, join, miterLimit, dashPattern,
dashPhase);
} else
stroke = new BasicStroke(width, cap, join);
g2.setStroke(stroke);
g2.draw(path);
}
public void setJoin(int j) {
join = j;
repaint();
}
public void setCap(int c) {
cap = c;
repaint();
}
public void setDash(boolean d) {
dash = d;
repaint();
}
public void mousePressed(MouseEvent event) {
Point p = event.getPoint();
for (int i = 0; i < points.length; i++) {
double x = points[i].getX() - SIZE / 2;
double y = points[i].getY() - SIZE / 2;
Rectangle2D r = new Rectangle2D.Double(x, y, SIZE, SIZE);
if (r.contains(p)) {
current = i;
return;
}
}
}
public void mouseReleased(MouseEvent event) {
current = -1;
}
public void mouseEntered(MouseEvent event) {
}
public void mouseExited(MouseEvent event) {
}
public void mouseClicked(MouseEvent event) {
}
public void mouseMoved(MouseEvent event) {
}
public void mouseDragged(MouseEvent event) {
if (current == -1)
return;
points[current] = event.getPoint();
repaint();
}
private Point2D[] points;
private static int SIZE = 10;
private int current;
private float width;
private int cap;
private int join;
private boolean dash;
}
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