I've written a code tat reads x and y co ordinates from a txt file and drawlines on the panel. i need to save the written geometry on the panel as a jpeg image, can any one help me out wat should be written in the action listener part of the btSaveScript in the below code
//MynewGUI.java
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.Point2D;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.filechooser.FileFilter;
import javax.swing.filechooser.FileNameExtensionFilter;
public class MynewGUI extends JFrame implements ActionListener {
String strTitle = "Geometrical Feature Recognition";
JFrame frmMain = new JFrame(strTitle);
DrawPanel1 dp = new DrawPanel1();
ShowPanel1 sp = new ShowPanel1();
JButton btNewScript = new JButton("New");
JButton btSaveScript = new JButton("Save");
JButton btClearScript = new JButton("Clear");
JButton btRecognize = new JButton("Recognize");
int CurrentScript=0;
int stroke;
public MynewGUI() {
// gui definitions
JFrame.setDefaultLookAndFeelDecorated(true);
frmMain.setLayout(new GridLayout(4, 3));
frmMain.setResizable(true);
frmMain.setBounds(300, 300, 800, 600);
frmMain.getContentPane().setLayout(null);
frmMain.setLocationRelativeTo(null);
frmMain.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
dp.setBounds(20, 20, 580, 520);
sp.setBounds(620, 300, 165, 200);
sp.setBackground(Color.WHITE);
frmMain.getContentPane().add(dp);
frmMain.getContentPane().add(sp);
btNewScript.setBounds(frmMain.getWidth() - 180, 170, 160, 20);
btNewScript.addActionListener(this);
frmMain.getContentPane().add(btNewScript);
btClearScript.setBounds(frmMain.getWidth() - 180, 200, 160, 20);
btClearScript.addActionListener(this);
btClearScript.setEnabled(false);
frmMain.getContentPane().add(btClearScript);
btSaveScript.setBounds(frmMain.getWidth() - 180, 230, 160, 20);
btSaveScript.addActionListener(this);
btSaveScript.setEnabled(false);
frmMain.getContentPane().add(btSaveScript);
btRecognize.setBounds(frmMain.getWidth() - 180, 260, 160, 20);
btRecognize.addActionListener(this);
btRecognize.setEnabled(false);
frmMain.getContentPane().add(btRecognize);
frmMain.setVisible(true);
}
public void actionPerformed(ActionEvent evt) {
if (evt.getSource() == btNewScript) {
dp.Clear();
dp.setEnabled(true);
btClearScript.setEnabled(true);
btNewScript.setEnabled(false);
File selectedFile = null;
if(CurrentScript<=1)
{
btSaveScript.setEnabled(true);
}
JFileChooser dlg = new JFileChooser();
FileFilter ft = new FileNameExtensionFilter("Text Files","txt");
dlg.addChoosableFileFilter(ft);
int rVal = dlg.showOpenDialog(this);
if (rVal == JFileChooser.APPROVE_OPTION) {
selectedFile = dlg.getSelectedFile();
}
try {
//String fileName = selectedFile.getAbsolutePath();
FileInputStream fstream = new FileInputStream(selectedFile);
DataInputStream in = new DataInputStream(fstream);
BufferedReader br = new BufferedReader(
new InputStreamReader(in));
String strLine;
java.util.ArrayList<Point2D> arrPoints = new java.util.ArrayList<Point2D>();
while ((strLine = br.readLine()) != null) {
StringTokenizer tk = new StringTokenizer(strLine,"\t");
while (tk.hasMoreTokens()) {
Double X = Double
.parseDouble(tk.nextToken().toString());
Double Y = Double
.parseDouble(tk.nextToken().toString());
Double Y_MAX = 450.0;
Double Y_VALUE = Y_MAX - Y;
arrPoints.add(new Point2D.Double(X, Y_VALUE));
}
}
dp.setDraw(true);
dp.setArrPoints(arrPoints);
dp.repaint();
} catch (IOException e) {
e.printStackTrace();
}
}
else if (evt.getSource() == btClearScript) {
dp.Clear();
btNewScript.setEnabled(true);
btClearScript.setEnabled(false);
}
else if(evt.getSource() == btSaveScript) {
//done know wat should be written here.
}
}
public static void main(String[] args) {
new MynewGUI();
}
}//DrawPanel1.java
import java.awt.Graphics2D;
import java.awt.geom.*;
import javax.swing.*;
import java.awt.Graphics;
public class DrawPanel1 extends JPanel {
private Boolean draw = false;
private java.util.ArrayList<Point2D> arrPoints = new java.util.ArrayList<Point2D>();
public Boolean getDraw() {
return draw;
}
public void setDraw(Boolean draw) {
this.draw = draw;
}
public java.util.ArrayList<Point2D> getArrPoints() {
return arrPoints;
}
public void setArrPoints(java.util.ArrayList<Point2D> arrPoints) {
this.arrPoints = arrPoints;
}
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
if (draw) {
g.translate(150, 60);
for (int i = 0; i < arrPoints.size() - 1; i++) {
Point2D p1 = arrPoints.get(i);
Point2D p2 = arrPoints.get(i + 1);
g2.draw(new Line2D.Double(p1.getX(), p1.getY(), p2.getX(), p2
.getY()));
}
}
}
public void Clear()
{
draw=false;
arrPoints.clear();
repaint();
}
}//ShowPanel1.java
import java.awt.Graphics2D;
import java.awt.*;
import javax.swing.*;
import java.awt.Graphics;
public class ShowPanel1 extends JPanel {
private Boolean draw = false;
public Boolean getDraw() {
return draw;
}
public void setDraw(Boolean draw) {
this.draw = draw;
}
protected void paintComponent(Graphics g)
{
g.setColor(new Color(0, 0, 128));
g.setFont(new Font("Verdana", Font.BOLD, 12));
super.paintComponent(g);
Graphics2D g2 = (Graphics2D) g;
}
}