Problemas JScrollPane!

Assuntos Gerais
#1

Boa noite galera GUJ,

estou contruindo uma GUI pelo Jigloo(plugin do eclipse), segue o codigo abaixo…
porem quando uma figura mto grande eh inserida no painel nao aparece os scrollsbars, pq?? ajudem-me por favorrrr
Obrigado

package GUI;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

import javax.swing.BorderFactory;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextField;

import javax.swing.WindowConstants;
import javax.swing.border.LineBorder;
import javax.swing.SwingUtilities;

/**

  • This code was edited or generated using CloudGarden’s Jigloo

  • SWT/Swing GUI Builder, which is free for non-commercial

  • use. If Jigloo is being used commercially (ie, by a corporation,

  • company or business for any purpose whatever) then you

  • should purchase a license for each developer using Jigloo.

  • Please visit www.cloudgarden.com for details.

  • Use of Jigloo implies acceptance of these licensing terms.

  • A COMMERCIAL LICENSE HAS NOT BEEN PURCHASED FOR

  • THIS MACHINE, SO JIGLOO OR THIS CODE CANNOT BE USED

  • LEGALLY FOR ANY CORPORATE OR COMMERCIAL PURPOSE.
    */
    public class NewJFrame extends javax.swing.JFrame {
    private JPanel jPanel1;
    private JTextField jTextField2;
    private JTextField jTextField1;
    private JPanel jPanel3;
    private JPanel jPanel2;
    private JMenuItem jMenuItem3;
    private JMenuItem jMenuItem2;
    private JMenuItem jMenuItem1;
    private JPanel jPanel7;
    private JScrollPane jScrollPane1;
    private JPanel jPanel6;
    private JButton jButton2;
    private JButton jButton5;
    private JButton jButton4;
    private JButton jButton3;
    private JPanel jPanel5;
    private JPanel jPanel4;
    private JButton jButton1;
    private JMenu jMenu1;
    private JMenuBar jMenuBar1;

    private Image img;

    /**

    • Auto-generated main method to display this JFrame
      */
      public static void main(String[] args) {
      SwingUtilities.invokeLater(new Runnable() {
      public void run() {
      NewJFrame inst = new NewJFrame();
      inst.setLocationRelativeTo(null);
      inst.setVisible(true);
      }
      });
      }

    public NewJFrame() {
    super();
    initGUI();
    }

    private void initGUI() {
    try {
    setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
    this.setTitle(“Ipicture”);

      	{
  		jMenuBar1 = new JMenuBar();
  		setJMenuBar(jMenuBar1);
  		{
  			jMenu1 = new JMenu();
  			jMenuBar1.add(jMenu1);
  			jMenu1.setText("Arquivo");
  			{
  				jMenuItem1 = new JMenuItem();
  				jMenu1.add(jMenuItem1);
  				jMenuItem1.setText("Abrir");
  				jMenuItem1.setBorder(BorderFactory.createTitledBorder(""));
  				jMenuItem1.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jMenuItem1ActionPerformed(evt);
  					}
  				});
  			}
  			{
  				jMenuItem2 = new JMenuItem();
  				jMenu1.add(jMenuItem2);
  				jMenuItem2.setText("Salvar");
  				jMenuItem2.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jMenuItem2ActionPerformed(evt);
  					}
  				});
  			}
  			{
  				jMenuItem3 = new JMenuItem();
  				jMenu1.add(jMenuItem3);
  				jMenuItem3.setText("Sair");
  				jMenuItem3.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jMenuItem3ActionPerformed(evt);
  					}
  				});
  			}
  		}
  	}
  	{
  		jPanel2 = new JPanel();
  		BorderLayout jPanel2Layout = new BorderLayout();
  		getContentPane().add(jPanel2, BorderLayout.CENTER);
  		jPanel2.setLayout(jPanel2Layout);
  		{
  			jPanel3 = new JPanel();
  			jPanel3.setLayout(null);
  			jPanel2.add(jPanel3, BorderLayout.EAST);
  			jPanel3.setPreferredSize(new java.awt.Dimension(98, 229));
  			{
  				jTextField1 = new JTextField();
  				jPanel3.add(jTextField1);
  				jTextField1.setText("Nome");
  				jTextField1.setBounds(12, 12, 59, 22);
  			}
  			{
  				jTextField2 = new JTextField();
  				jPanel3.add(jTextField2);
  				jTextField2.setText("CNPJ");
  				jTextField2.setBounds(12, 46, 59, 22);
  			}
  			{
  				jButton1 = new JButton();
  				jPanel3.add(jButton1);
  				jButton1.setText("Salvar");
  				jButton1.setBounds(12, 89, 68, 30);
  				jButton1.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jButton1ActionPerformed(evt);
  					}
  				});
  			}
  		}
  		{
  			jPanel6 = new JPanel();
  			BorderLayout jPanel6Layout = new BorderLayout();
  			jPanel6.setLayout(jPanel6Layout);
  			jPanel2.add(jPanel6, BorderLayout.CENTER);
  			{
  				jScrollPane1 = new JScrollPane();
  				jPanel6.add(jScrollPane1, BorderLayout.CENTER);
  				jScrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
  				jScrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
  				{
  					jPanel7 = new JPanel() {
  						
  						public void paintComponent(Graphics g) {   
  							
  							super.paintComponent(g);
  							
  							//g.drawImage(img,0,0,this.getHeight(),this.getWidth(),this);
  							g.drawImage(img,0,0,null);
  							
  							this.repaint();
  							//this.validate();
  						}
  					};
  					jScrollPane1.setViewportView(jPanel7);
  				}
  			}
  		}
  	}
  	{
  		jPanel1 = new JPanel();
  		BorderLayout jPanel1Layout = new BorderLayout();
  		getContentPane().add(jPanel1, BorderLayout.SOUTH);
  		jPanel1.setLayout(jPanel1Layout);
  		jPanel1.setPreferredSize(new java.awt.Dimension(400, 24));
  		{
  			jPanel5 = new JPanel();
  			GridLayout jPanel5Layout = new GridLayout(1, 1);
  			jPanel5Layout.setColumns(1);
  			jPanel5Layout.setHgap(5);
  			jPanel5Layout.setVgap(5);
  			jPanel1.add(jPanel5, BorderLayout.CENTER);
  			jPanel5.setLayout(jPanel5Layout);
  			{
  				jButton2 = new JButton();
  				jPanel5.add(jButton2);
  				jButton2.setText("<<");
  				jButton2.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jButton2ActionPerformed(evt);
  					}
  				});
  			}
  			{
  				jButton3 = new JButton();
  				jPanel5.add(jButton3);
  				jButton3.setText("<");
  				jButton3.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jButton3ActionPerformed(evt);
  					}
  				});
  			}
  			{
  				jButton4 = new JButton();
  				jPanel5.add(jButton4);
  				jButton4.setText(">");
  				jButton4.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jButton4ActionPerformed(evt);
  					}
  				});
  			}
  			{
  				jButton5 = new JButton();
  				jPanel5.add(jButton5);
  				jButton5.setText(">>");
  				jButton5.setPreferredSize(new java.awt.Dimension(73, 24));
  				jButton5.addActionListener(new ActionListener() {
  					public void actionPerformed(ActionEvent evt) {
  						jButton5ActionPerformed(evt);
  					}
  				});
  			}
  		}
  		{
  			jPanel4 = new JPanel();
  			jPanel1.add(jPanel4, BorderLayout.EAST);
  			jPanel4.setPreferredSize(new java.awt.Dimension(100, 24));
  		}
  	}
  	pack();
  	setSize(400, 300);
  } catch (Exception e) {
  	e.printStackTrace();
  }

    }

    private void jMenuItem1ActionPerformed(ActionEvent evt) {

       JFileChooser fc = new JFileChooser();
   fc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);
   
   int validador = fc.showOpenDialog(NewJFrame.this);
   
   if(validador == JFileChooser.APPROVE_OPTION) {
  	 
  	 File file = fc.getSelectedFile();
  	 String caminho = (String) file.getAbsolutePath();
  	 
  	 img = Toolkit.getDefaultToolkit().createImage(caminho);
  	 
  	 
   }
  	 
  //System.out.println("jMenuItem1.actionPerformed, event="+evt);
  //TODO add your code for jMenuItem1.actionPerformed

    }

#2

http://www.java2s.com/Code/Java/Swing-JFC/ScrollPanewithimage.htm

#3

adicione ao seu JScrollpane um jPanel…qd pegar a imagem, pegue o tamanho dela e aplique no jPanel

assim:

 jPanel.setPreferredSize(comprimentoImagem,alturaImagem);
#4