Olá pessoal!
To fazendo um aplicativo no qual tenho que adicionar uma imagem a um JScrollPane, e mostrar as coordenadas X e Y de onde o mouse passar.
O que está ocorrendo é que, ao rodar o programa, antes de adicionar a imagem, as coordenadas aparecem ao passar o mouse por cima do JScrollPane, mas após abrir a imagem no JScrollPane, as coordenadas não aparecem mais.
OBS.: Tentei com JPanel, e acontece o mesmo problema
Segue abaixo as minhas 2 classes:
Classe Imagem.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package processamentoimagens;
/**
*
* @author Proprietário
*/
import java.awt.Canvas;
import java.awt.Graphics;
import java.awt.Image;
import java.awt.image.BufferedImage;
public class Imagem extends Canvas {
private BufferedImage imagem;
public Imagem(BufferedImage imagem) {
setBounds(0, 0, 200, 200);
setVisible(true);
this.imagem = imagem;
}
public BufferedImage getImagem() {
return imagem;
}
public void setImagem(BufferedImage imagem) {
this.imagem = imagem;
}
@Override
public void paint(Graphics g) {
super.paint(g);
g.drawImage(imagem, 0, 0, 200, 200, this);
}
}
Classe Tela.java
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/*
* Tela.java
*
* Created on 07/04/2010, 15:12:44
*/
//http://java.sun.com/docs/books/tutorial/uiswing/events/mousemotionlistener.html
//http://www.guj.com.br/posts/list/129965.java#700119
package processamentoimagens;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.MouseMotionListener;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
/**
*
* @author Proprietário
*/
public class Tela extends javax.swing.JFrame {
private Imagem image1;
private Imagem image2;
private BufferedImage img1;
private BufferedImage img2;
/** Creates new form Tela */
public Tela() {
initComponents();
imagem1.addMouseListener(null);
imagem2.addMouseListener(null);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
operacoes = new javax.swing.ButtonGroup();
btnAbrir1 = new javax.swing.JButton();
btnAbrir2 = new javax.swing.JButton();
imagem2 = new javax.swing.JScrollPane();
jPanel2 = new javax.swing.JPanel();
jRadioButton1 = new javax.swing.JRadioButton();
jRadioButton2 = new javax.swing.JRadioButton();
jRadioButton3 = new javax.swing.JRadioButton();
jRadioButton4 = new javax.swing.JRadioButton();
jRadioButton5 = new javax.swing.JRadioButton();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jPanel1 = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jtfX = new javax.swing.JTextField();
jtfY = new javax.swing.JTextField();
jPanel3 = new javax.swing.JPanel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jTextField4 = new javax.swing.JTextField();
jTextField5 = new javax.swing.JTextField();
imagem1 = new javax.swing.JScrollPane();
FormListener formListener = new FormListener();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
btnAbrir1.setText("Abrir");
btnAbrir1.addActionListener(formListener);
btnAbrir2.setText("Abrir");
btnAbrir2.addActionListener(formListener);
imagem2.setMaximumSize(new java.awt.Dimension(200, 200));
imagem2.setMinimumSize(new java.awt.Dimension(200, 200));
imagem2.setPreferredSize(new java.awt.Dimension(200, 200));
imagem2.addMouseListener(formListener);
imagem2.addMouseMotionListener(formListener);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Operadores", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(0, 0, 0))); // NOI18N
operacoes.add(jRadioButton1);
jRadioButton1.setLabel("Adição");
operacoes.add(jRadioButton2);
jRadioButton2.setLabel("Subtração");
operacoes.add(jRadioButton3);
jRadioButton3.setLabel("Multiplicação");
operacoes.add(jRadioButton4);
jRadioButton4.setLabel("Divisão");
operacoes.add(jRadioButton5);
jRadioButton5.setLabel("Média");
javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addGroup(jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jRadioButton1)
.addComponent(jRadioButton2)
.addComponent(jRadioButton3)
.addComponent(jRadioButton4)
.addComponent(jRadioButton5))
.addContainerGap(12, Short.MAX_VALUE))
);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel2Layout.createSequentialGroup()
.addComponent(jRadioButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jRadioButton2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jRadioButton3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jRadioButton4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jRadioButton5))
);
jButton1.setText("Processar (Normalização)");
jButton2.setText("Processar (Truncado)");
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Posição", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(0, 0, 0))); // NOI18N
jLabel1.setText("X:");
jLabel2.setText("Y:");
jtfX.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jtfX.setEnabled(false);
jtfY.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jtfY.setEnabled(false);
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel1)
.addGap(18, 18, 18)
.addComponent(jtfX, javax.swing.GroupLayout.DEFAULT_SIZE, 69, Short.MAX_VALUE))
.addGroup(jPanel1Layout.createSequentialGroup()
.addComponent(jLabel2)
.addGap(18, 18, 18)
.addComponent(jtfY, javax.swing.GroupLayout.DEFAULT_SIZE, 69, Short.MAX_VALUE))
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel1Layout.createSequentialGroup()
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jtfX, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jtfY, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(34, Short.MAX_VALUE))
);
jPanel3.setBorder(javax.swing.BorderFactory.createTitledBorder(null, "Cor", javax.swing.border.TitledBorder.DEFAULT_JUSTIFICATION, javax.swing.border.TitledBorder.DEFAULT_POSITION, new java.awt.Font("Tahoma", 0, 11), new java.awt.Color(0, 0, 0))); // NOI18N
jLabel3.setText("R:");
jLabel4.setText("G:");
jLabel5.setText("B:");
jTextField3.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jTextField3.setEnabled(false);
jTextField4.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jTextField4.setEnabled(false);
jTextField5.setBorder(javax.swing.BorderFactory.createEtchedBorder());
jTextField5.setEnabled(false);
javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
jPanel3.setLayout(jPanel3Layout);
jPanel3Layout.setHorizontalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(jLabel3)
.addGap(4, 4, 4)
.addComponent(jTextField3, javax.swing.GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE))
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(jLabel4)
.addGap(4, 4, 4)
.addComponent(jTextField4, javax.swing.GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE))
.addGroup(jPanel3Layout.createSequentialGroup()
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jTextField5, javax.swing.GroupLayout.DEFAULT_SIZE, 86, Short.MAX_VALUE)
.addGap(1, 1, 1)))
.addGap(17, 17, 17))
);
jPanel3Layout.setVerticalGroup(
jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(jPanel3Layout.createSequentialGroup()
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel4)
.addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel5)
.addComponent(jTextField5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
);
imagem1.setMaximumSize(new java.awt.Dimension(200, 200));
imagem1.setMinimumSize(new java.awt.Dimension(200, 200));
imagem1.setPreferredSize(new java.awt.Dimension(200, 200));
imagem1.addMouseListener(formListener);
imagem1.addMouseMotionListener(formListener);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jPanel3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jButton2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(btnAbrir1, javax.swing.GroupLayout.PREFERRED_SIZE, 108, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(imagem1, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(40, 40, 40)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(imagem2, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnAbrir2, javax.swing.GroupLayout.PREFERRED_SIZE, 102, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(198, 198, 198))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(46, 46, 46)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(btnAbrir1)
.addComponent(btnAbrir2))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(imagem1, javax.swing.GroupLayout.PREFERRED_SIZE, 200, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(imagem2, javax.swing.GroupLayout.DEFAULT_SIZE, 200, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jPanel2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jPanel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addGap(41, 41, 41)
.addComponent(jButton1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton2)))
.addContainerGap(78, Short.MAX_VALUE))
);
pack();
}
// Code for dispatching events from components to event handlers.
private class FormListener implements java.awt.event.ActionListener, java.awt.event.MouseListener, java.awt.event.MouseMotionListener {
FormListener() {}
public void actionPerformed(java.awt.event.ActionEvent evt) {
if (evt.getSource() == btnAbrir1) {
Tela.this.btnAbrir1ActionPerformed(evt);
}
else if (evt.getSource() == btnAbrir2) {
Tela.this.btnAbrir2ActionPerformed(evt);
}
}
public void mouseClicked(java.awt.event.MouseEvent evt) {
}
public void mouseEntered(java.awt.event.MouseEvent evt) {
}
public void mouseExited(java.awt.event.MouseEvent evt) {
if (evt.getSource() == imagem2) {
Tela.this.imagem2MouseExited(evt);
}
else if (evt.getSource() == imagem1) {
Tela.this.imagem1MouseExited(evt);
}
}
public void mousePressed(java.awt.event.MouseEvent evt) {
}
public void mouseReleased(java.awt.event.MouseEvent evt) {
}
public void mouseDragged(java.awt.event.MouseEvent evt) {
}
public void mouseMoved(java.awt.event.MouseEvent evt) {
if (evt.getSource() == imagem2) {
Tela.this.imagem2MouseMoved(evt);
}
else if (evt.getSource() == imagem1) {
Tela.this.imagem1MouseMoved(evt);
}
}
}// </editor-fold>
private void btnAbrir1ActionPerformed(java.awt.event.ActionEvent evt) {
// Exibe a caixa de seleção de arquivos.
JFileChooser selecaoArquivos = new JFileChooser();
selecaoArquivos.setMultiSelectionEnabled(false);
selecaoArquivos.showOpenDialog(this);
// Recupera o arquivo selecionado.
File arquivo = selecaoArquivos.getSelectedFile();
if(arquivo == null) {
JOptionPane.showMessageDialog(this, "Nenhum arquivo foi selecionado.");
}
else {
img1 = null;
try {
img1 = ImageIO.read(arquivo);
} catch (IOException e) {
}
imagem1.removeAll(); //essa linha serve para que eu possa mudar a imagem
image1 = new Imagem(img1);
imagem1.add(image1);
}
}
private void btnAbrir2ActionPerformed(java.awt.event.ActionEvent evt) {
// Exibe a caixa de seleção de arquivos.
JFileChooser selecaoArquivos = new JFileChooser();
selecaoArquivos.setMultiSelectionEnabled(false);
selecaoArquivos.showOpenDialog(this);
// Recupera o arquivo selecionado.
File arquivo = selecaoArquivos.getSelectedFile();
if(arquivo == null) {
JOptionPane.showMessageDialog(this, "Nenhum arquivo foi selecionado.");
}
else {
img2= null;
try {
img2 = ImageIO.read(arquivo);
} catch (IOException e) {
}
imagem2.removeAll(); //essa linha serve para que eu possa mudar a imagem
image2 = new Imagem(img2);
imagem2.add(image2);
}
}
private void imagem2MouseMoved(java.awt.event.MouseEvent evt) {
coordenadas(evt);
}
private void imagem2MouseExited(java.awt.event.MouseEvent evt) {
limparTF();
}
private void imagem1MouseMoved(java.awt.event.MouseEvent evt) {
coordenadas(evt);
}
private void imagem1MouseExited(java.awt.event.MouseEvent evt) {
limparTF();
}
void coordenadas(MouseEvent e) {
jtfX.setText(String.valueOf(e.getX()));
jtfY.setText(String.valueOf(e.getY()));
}
void limparTF(){
jtfX.setText("");
jtfY.setText("");
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
Tela frame = new Tela();
frame.setBounds(0, 0, 800, 600);
frame.setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton btnAbrir1;
private javax.swing.JButton btnAbrir2;
private javax.swing.JScrollPane imagem1;
private javax.swing.JScrollPane imagem2;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JPanel jPanel3;
private javax.swing.JRadioButton jRadioButton1;
private javax.swing.JRadioButton jRadioButton2;
private javax.swing.JRadioButton jRadioButton3;
private javax.swing.JRadioButton jRadioButton4;
private javax.swing.JRadioButton jRadioButton5;
private javax.swing.JTextField jTextField3;
private javax.swing.JTextField jTextField4;
private javax.swing.JTextField jTextField5;
private javax.swing.JTextField jtfX;
private javax.swing.JTextField jtfY;
private javax.swing.ButtonGroup operacoes;
// End of variables declaration
}
Alguém sabe como resolver isso?
Agradeço desde já,
Dina