Swing
- From: Shane <shane@xxxxxxxxxxxxxxxxxxxx>
- Date: Tue, 31 Jul 2007 14:26:18 +1200
Im having trouble getting started with swing. I have created the following,
but I cannot figure out how to paintComponent(Graphics g){ g.drawOval(x, y,
2, 2);}
um
import java.awt.GridLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.event.MouseListener;
import java.awt.event.MouseEvent;
import javax.swing.*;
import java.awt.*;
import java.awt.Graphics;
//import tutorial.MyDrawPanel;
/**
* @author Shane Howearth
*/
public class Assignment2 extends JPanel implements MouseListener{
int x1, y1, x2, y2;
static JFrame jf;
BlankArea blankArea;
// eclipse complaint fix0red
static final long serialVersionUID =0;
public static void main(String[] args) {
/* Use an appropriate Look and Feel */
try {
UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
} catch (UnsupportedLookAndFeelException ex) {
ex.printStackTrace();
} catch (IllegalAccessException ex) {
ex.printStackTrace();
} catch (InstantiationException ex) {
ex.printStackTrace();
} catch (ClassNotFoundException ex) {
ex.printStackTrace();
}
/* Turn off metal's use of bold fonts */
UIManager.put("swing.boldMetal", Boolean.FALSE);
//Schedule a job for the event dispatch thread:
//creating and showing this application's GUI.
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
drawGUI();
}
});
}
class MyDrawPanel extends JPanel{
// eclipse complaint fix0red again
static final long serialVersionUID =0;
}
static MyDrawPanel dp;
//Draw our window
static JComponent newContentPane;
private static void drawGUI() {
//Create and set up the window.
JFrame frame = new JFrame("Regression Line");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
//Create and set up the content pane.
newContentPane = new Assignment2();
newContentPane.setOpaque(true); //content panes must be opaque
frame.setContentPane(newContentPane);
frame.setPreferredSize(new Dimension(500,500));
//Display the window.
frame.pack();
frame.setVisible(true);
}
//mouse events
public Assignment2() {
super(new GridLayout(0,1));
blankArea = new BlankArea(Color.WHITE);
add(blankArea);
//Register for mouse events on blankArea and the panel.
blankArea.addMouseListener(this);
addMouseListener(this);
setPreferredSize(new Dimension(450, 450));
setBorder(BorderFactory.createEmptyBorder(20,20,20,20));
}
void eventOutput(String eventDescription, MouseEvent e) {
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
}
public void mouseExited(MouseEvent e) {
}
int x, y;
//Grab the x and y of where the mouse is clicked
public void mouseClicked(MouseEvent e) {
// eventOutput("Mouse clicked (# of clicks: "
// + e.getClickCount() + ")", e);
x = e.getX();
y = e.getY();
dp.repaint();
};
}
--
Q: What's yellow, normed, and complete?
A: A Bananach space.
.
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