hi all,
i am trying to add a mouselistener in a panel which is a part of a frame.....but the listener is not responding to click of mouse........please help me in finding where i m wrong.....
i am attching the whole code
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
public class openpic2 extends JFrame
{
// Instance variables
JTextField m_fileNameTF = new JTextField(15);
JFileChooser m_fileChooser = new JFileChooser();
DrawingPanel imagepanel;
Image img;int arr[];
int height,width,hcount,vcount,flag,click;
JavaFilter fJavaFilter;
int mouseX,mouseY;
public static void main(
String[] args)
{
JFrame window = new openpic2();
window.setVisible(true);
}
// constructor
openpic2()
{
// set the Text field to Read Only mode
m_fileNameTF.setEditable(false);
// Choose only files, not directories
m_fileChooser.setFileSelectionMode ( JFileChooser.FILES_ONLY);
// Set filter for
Java source files.
fJavaFilter = new JavaFilter();
m_fileChooser.setFileFilter (fJavaFilter);
//... Add Open Button and its listeners
JButton openButton = new JButton("Open");
JButton lineButton = new JButton("line segment");
JButton wordButton=new JButton("word segment");
openButton.addActionListener(new OpenAction());
lineButton.addActionListener(new LineAction());
wordButton.addActionListener(new wordAction());
//... Create contant pane, layout components
JPanel content = new JPanel();
content.setLayout(new BorderLayout());
JPanel buttonpanel=new JPanel();
buttonpanel.add(openButton);
buttonpanel.add(m_fileNameTF);
buttonpanel.add(lineButton);
buttonpanel.add(wordButton);
content.add(buttonpanel,"South");
// Create JPanel canvas to hold the picture
imagepanel = new DrawingPanel();
//imagepanel.addMouseListener(new MouseClickListener());
// Create JScrollPane to hold the canvas containing the picture
JScrollPane scroller = new JScrollPane(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
scroller.setPreferredSize(new Dimension(500,300));
scroller.setViewportView(imagepanel);
scroller.setViewportBorder(
BorderFactory.createLineBorder(Color.black));
// Add scroller pane to Panel
content.add(scroller,"Center");
//Set window characteristics
this.setTitle("File Browse and View");
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setContentPane(content);
this.pack();
}
class DrawingPanel extends JPanel
{
int harr[]=new int[100];
int varr[]=new int[100];
int x,y;
public DrawingPanel()
{ for(int i=0;i<50;i++)
harr[i]=varr[i]=0;
setBackground(Color.white);
setPreferredSize(new Dimension(750,950));
MouseClickListener listener= new MouseClickListener();
addMouseListener(listener);
}
protected void paintComponent(Graphics g)
{
super.paintComponent(g);
if (img!=null)
{
// resizing the JPanel to the pic size
//int width = img.getWidth(this);
//int height = img.getHeight(this);
//imagepanel.setPreferredSize(new Dimension(width,height));
// printing the image on the panel
g.drawImage(img, 0, 0, this);
}
if(flag==0)
{for(int x=0;x<hcount;x++)
{
g.drawLine(0,harr[x],img.getWidth(imagepanel),harr[x]);
}
}
if(flag==1)
{for(int x=0;x<vcount;x++)
g.drawLine(varr[x],0,varr[x],img.getHeight(imagepanel));
}
//darwing line at position given by mouse click
if(click==1)
g.drawLine(0,y,img.getHeight(imagepanel),y);
}
public void sethLine(int arre[] )
{
for(int i=0;i<hcount;i++)
this.harr[i]=arre[i];
repaint();
}
public void setvLine(int arre[])
{ for(int i=0;i<vcount;i++)
this.varr[i]=arre[i];
repaint();
}
public void setaLine(int x,int y)
{
repaint();
}
}
class MouseClickListener extends MouseAdapter
{ public void MouseClicked(MouseEvent e)
{int mouseX=e.getX();
int mouseY=e.getY();
click=1;
System.out.println(mouseX);
System.out.println(mouseY);
imagepanel.setaLine(mouseX,mouseY);
}
}
// OpenAction
class OpenAction implements ActionListener
{
public void actionPerformed(ActionEvent ae)
{
//... Open a file dialog.
int retval = m_fileChooser.showOpenDialog(openpic2.this);
if (retval == JFileChooser.APPROVE_OPTION)
{
//... The user selected a file, process it.
File file = m_fileChooser.getSelectedFile();
// store the file path in a string and send to JNI
String s = file.getPath();
System.out.println("The Path is:\n" + s);
//... Update user interface.
img = Toolkit.getDefaultToolkit().getImage(file.getPath());
//if(img!= null)
// loadimage();
m_fileNameTF.setText(file.getName());
imagepanel.repaint();
}
}
}
//this tries to build lines
class LineAction implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
int width = img.getWidth(imagepanel);
int height = img.getHeight(imagepanel);
flag=0;
try{ int array[]= new int[100];
int k=0;
for(int x=0;x<=height;x=x+20)
{array[k]=x;
k++;
}
hcount=k;
imagepanel.sethLine(array);
}
catch(ArrayIndexOutOfBoundsException out){}
}
}
class wordAction implements ActionListener
{
public void actionPerformed(ActionEvent e)
{
int width=img.getWidth(imagepanel);
int height=img.getHeight(imagepanel);
flag=1;
try{ int array[]= new int[100];
int k=0;
for(int x=0;x<=width;x=x+20)
{array[k]=x;
k++;
}
vcount=k;
imagepanel.setvLine(array);
}
catch(ArrayIndexOutOfBoundsException out){}
}
}
/** Filter to work with JFileChooser to select java file types. **/
class JavaFilter extends javax.swing.filechooser.FileFilter
{
// this function is internally used for the Filtering action
public boolean accept (File f)
{
return f.getName ().toLowerCase ().endsWith (".jpeg")
|| f.getName ().toLowerCase ().endsWith (".jpg")
|| f.getName ().toLowerCase ().endsWith (".gif")
|| f.isDirectory ();
}
// this function is internally used for the Filter Option drop down menu
public String getDescription ()
{
return "*.jpeg, *.gif, *.jpg";
}
}
}