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/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
package test;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.BufferedImage;
import java.awt.print.*;
import javax.swing.*;
/**
*
* @author Is Me
*/
class PrintPreview extends JFrame implements ActionListener, ItemListener {
JButton printButton = new JButton("Imprimer");
Pageable pageable = null;
double scale = 1.0;
Page page[] = null;
JComboBox combobox = new JComboBox();
CardLayout cardlayout = new CardLayout();
JPanel previewPanel = new JPanel(cardlayout);
JButton backButton = new JButton("Précedente"), forwardButton = new JButton("Suivante");
public PrintPreview(final Printable printable, final PageFormat pageFormat) {
super("Aperçu");
pageable = new Pageable() {
@Override
public int getNumberOfPages() {
Graphics graphics = new BufferedImage(1, 1, BufferedImage.TYPE_INT_RGB).getGraphics();
int numPages = 0;
try {
while (printable.print(graphics, pageFormat, numPages) == Printable.PAGE_EXISTS) {
numPages++;
}
} catch (Exception ex) {
}
return numPages;
}
@Override
public PageFormat getPageFormat(int x) {
return pageFormat;
}
@Override
public Printable getPrintable(int x) {
return printable;
}
};
createPreview();
}
private void createPreview() {
page = new Page[pageable.getNumberOfPages()];
PageFormat pageFormat = pageable.getPageFormat(0);
Dimension size = new Dimension((int) pageFormat.getPaper().getWidth(), (int) pageFormat.getPaper().getHeight());
if (pageFormat.getOrientation() != PageFormat.PORTRAIT) {
size = new Dimension(size.height, size.width);
}
for (int i = 0; i < page.length; i++) {
combobox.addItem("" + (i + 1));
page[i] = new Page(i, size);
previewPanel.add("" + (i + 1), new JScrollPane(page[i]));
}
setTopPanel();
getContentPane().add(previewPanel, "Center");
pack();
setExtendedState(Frame.MAXIMIZED_BOTH);
setVisible(true);
}
private void setTopPanel() {
FlowLayout fl = new FlowLayout();
GridBagLayout gbl = new GridBagLayout();
JPanel topPanel = new JPanel(gbl), temp = new JPanel(fl);
backButton.addActionListener(this);
forwardButton.addActionListener(this);
backButton.setEnabled(false);
forwardButton.setEnabled(page.length > 1);
temp.add(combobox);
temp.add(backButton);
temp.add(forwardButton);
temp.add(printButton);
topPanel.add(temp);
printButton.addActionListener(this);
combobox.addItemListener(this);
getContentPane().add(topPanel, "North");
}
@Override
public void itemStateChanged(ItemEvent ie) {
cardlayout.show(previewPanel, (String) combobox.getSelectedItem());
backButton.setEnabled(combobox.getSelectedIndex() == 0 ? false : true);
forwardButton.setEnabled(combobox.getSelectedIndex() == combobox.getItemCount() - 1 ? false : true);
validate();
}
@Override
public void actionPerformed(ActionEvent ae) {
Object o = ae.getSource();
if (o == printButton) {
try {
PrinterJob pj = PrinterJob.getPrinterJob();
pj.defaultPage(pageable.getPageFormat(0));
pj.setPageable(pageable);
if (pj.printDialog()) {
pj.print();
}
} catch (Exception ex) {
JOptionPane.showMessageDialog(null, ex.toString(), "Error in Printing", 1);
}
} else if (o == backButton) {
combobox.setSelectedIndex(combobox.getSelectedIndex() == 0 ? 0 : combobox.getSelectedIndex() - 1);
if (combobox.getSelectedIndex() == 0) {
backButton.setEnabled(false);
}
} else if (o == forwardButton) {
combobox.setSelectedIndex(combobox.getSelectedIndex() == combobox.getItemCount() - 1 ? 0 : combobox.getSelectedIndex() + 1);
if (combobox.getSelectedIndex() == combobox.getItemCount() - 1) {
forwardButton.setEnabled(false);
}
}
}
class Page extends JLabel {
final int n;
final PageFormat pageformat;
BufferedImage bufferimage = null;
Dimension size = null;
public Page(int currentpage, Dimension size) {
this.size = size;
bufferimage = new BufferedImage(size.width, size.height, BufferedImage.TYPE_INT_RGB);
n = currentpage;
pageformat = pageable.getPageFormat(n);
Graphics g = bufferimage.getGraphics();
g.setColor(Color.WHITE);
g.fillRect(0, 0, (int) pageformat.getWidth(), (int) pageformat.getHeight());
try {
pageable.getPrintable(n).print(g, pageformat, n);
} catch (Exception ex) {
}
setIcon(new ImageIcon(bufferimage));
}
}
} |
Problème d'affichage JFrame !
:
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