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is there any way to map the image to handle mouse clicks? not a java applet,
click an object on the left, follows the left() function, the object on the right does right() function..
??
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import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import java.awt.image.BufferedImage;
import javax.swing.*;
public class ImageMapping extends JPanel {
BufferedImage image;
Rectangle[] cells = new Rectangle[0];
Dimension size = new Dimension(400,400);
int selectedIndex = -1;
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2 = (Graphics2D)g;
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
if(image == null) makeImage();
// For dynamic resizing behavior.
int x = (getWidth() - image.getWidth())/2;
int y = (getHeight() - image.getHeight())/2;
g2.drawImage(image, x, y, this);
cells[0].setLocation(x, y);
cells[1].setLocation(x+image.getWidth()/2, y);
for(int j = 0; j < cells.length; j++) {
Color color = Color.red;
if(j == selectedIndex) {
color = Color.green.darker();
}
g2.setPaint(color);
g2.draw(cells[j]);
}
}
private void makeImage() {
int w = 240;
int h = 240;
int type = BufferedImage.TYPE_INT_RGB;
image = new BufferedImage(w, h, type);
Graphics2D g2 = image.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING,
RenderingHints.VALUE_ANTIALIAS_ON);
g2.setBackground(new Color(220,220,240));
g2.clearRect(0,0,w,h);
int r = Math.min(w,h)/3;
g2.setPaint(Color.pink);
g2.draw(new Ellipse2D.Double(w/2-r, h/2-r, 2*r, 2*r));
g2.setPaint(Color.blue);
double thetaInc = Math.toRadians(72);
double theta = -Math.PI/2 - thetaInc/2;
for(int j = 0; j < 5; j++) {
double x1 = w/2 + r*Math.cos(theta);
double y1 = h/2 + r*Math.sin(theta);
theta += thetaInc/2;
double ctrlx = w/2 + 2*r*Math.cos(theta);
double ctrly = h/2 + 2*r*Math.sin(theta);
theta += thetaInc/2;
double x2 = w/2 + r*Math.cos(theta);
double y2 = h/2 + r*Math.sin(theta);
g2.draw(new QuadCurve2D.Double(x1, y1, ctrlx, ctrly, x2, y2));
}
g2.dispose();
cells = new Rectangle[2];
cells[0] = new Rectangle(w/2,h);
cells[1] = new Rectangle(w/2,h);
}
public Dimension getPreferredSize() {
return size;
}
public static void main(String[] args) {
ImageMapping test = new ImageMapping();
test.addMouseMotionListener(test.mml);
JFrame f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.getContentPane().add(test);
f.pack();
f.setLocation(200,200);
f.setVisible(true);
}
private MouseMotionListener mml = new MouseMotionAdapter() {
public void mouseMoved(MouseEvent e) {
Point p = e.getPoint();
boolean hover = false;
for(int j = 0; j < cells.length; j++) {
if(cells[j].contains(p)) {
hover = true;
if(j != selectedIndex) {
// We've entered a new cell, change selectedIndex.
// Call your methods here, eg,
// if(j == 0) left();
selectedIndex = j;
repaint();
}
break;
}
}
if(!hover && selectedIndex != -1) {
selectedIndex = -1;
repaint();
}
}
};
}
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thanks for the great example.., i'll jus spend some time to study the code..
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// |
sam_02
