Print the text file and print preview them
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Container;
import java.awt.Dimension;
import java.awt.Event;
import java.awt.Font;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.awt.print.PageFormat;
import java.awt.print.Printable;
import java.awt.print.PrinterException;
import java.awt.print.PrinterJob;
import java.io.BufferedReader;
import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Vector;
import javax.swing.AbstractAction;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JScrollPane;
import javax.swing.KeyStroke;
public class FilePrinter extends JFrame {
private PageFormat pageFormat;
private FilePageRenderer pageRenderer;
private String title;
public FilePrinter() {
super();
init();
PrinterJob pj = PrinterJob.getPrinterJob();
pageFormat = pj.defaultPage();
setVisible(true);
}
protected void init() {
setSize(350, 300);
center();
Container content = getContentPane();
content.setLayout(new BorderLayout());
// Add the menu bar.
JMenuBar mb = new JMenuBar();
JMenu file = new JMenu("File", true);
file.add(new FileOpenAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_O, Event.CTRL_MASK));
file.add(new FilePrintAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_P, Event.CTRL_MASK));
file.add(new FilePageSetupAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_P, Event.CTRL_MASK
| Event.SHIFT_MASK));
file.addSeparator();
file.add(new FileQuitAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_Q, Event.CTRL_MASK));
mb.add(file);
JMenu page = new JMenu("Page", true);
page.add(new PageNextPageAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_DOWN, 0));
page.add(new PagePreviousPageAction()).setAccelerator(
KeyStroke.getKeyStroke(KeyEvent.VK_PAGE_UP, 0));
mb.add(page);
setJMenuBar(mb);
getContentPane().setLayout(new BorderLayout());
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
});
}
protected void center() {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = getSize();
int x = (screenSize.width - frameSize.width) / 2;
int y = (screenSize.height - frameSize.height) / 2;
setLocation(x, y);
}
public void showTitle() {
int currentPage = pageRenderer.getCurrentPage() + 1;
int numPages = pageRenderer.getNumPages();
setTitle(title + " - page " + currentPage + " of " + numPages);
}
public class FileOpenAction extends AbstractAction {
public FileOpenAction() {
super("Open...");
}
public void actionPerformed(ActionEvent ae) {
// Pop up a file dialog.
JFileChooser fc = new JFileChooser(".");
int result = fc.showOpenDialog(FilePrinter.this);
if (result != 0) {
return;
}
java.io.File f = fc.getSelectedFile();
if (f == null) {
return;
}
// Load the specified file.
try {
pageRenderer = new FilePageRenderer(f, pageFormat);
title = "[" + f.getName() + "]";
showTitle();
JScrollPane jsp = new JScrollPane(pageRenderer);
getContentPane().removeAll();
getContentPane().add(jsp, BorderLayout.CENTER);
validate();
} catch (java.io.IOException ioe) {
System.out.println(ioe);
}
}
}
public static void main(String[] args) {
new FilePrinter();
}
public class FilePrintAction extends AbstractAction {
public FilePrintAction() {
super("Print");
}
public void actionPerformed(ActionEvent ae) {
PrinterJob pj = PrinterJob.getPrinterJob();
pj.setPrintable(pageRenderer, pageFormat);
if (pj.printDialog()) {
try {
pj.print();
} catch (PrinterException e) {
System.out.println(e);
}
}
}
}
public class FilePageSetupAction extends AbstractAction {
public FilePageSetupAction() {
super("Page setup...");
}
public void actionPerformed(ActionEvent ae) {
PrinterJob pj = PrinterJob.getPrinterJob();
pageFormat = pj.pageDialog(pageFormat);
if (pageRenderer != null) {
pageRenderer.pageInit(pageFormat);
showTitle();
}
}
}
public class FileQuitAction extends AbstractAction {
public FileQuitAction() {
super("Quit");
}
public void actionPerformed(ActionEvent ae) {
System.exit(0);
}
}
public class PageNextPageAction extends AbstractAction {
public PageNextPageAction() {
super("Next page");
}
public void actionPerformed(ActionEvent ae) {
if (pageRenderer != null)
pageRenderer.nextPage();
showTitle();
}
}
public class PagePreviousPageAction extends AbstractAction {
public PagePreviousPageAction() {
super("Previous page");
}
public void actionPerformed(ActionEvent ae) {
if (pageRenderer != null)
pageRenderer.previousPage();
showTitle();
}
}
class FilePageRenderer extends JComponent implements Printable {
private int currentPageIndex;
private Vector lineVector;
private Vector pageVector;
private Font font;
private int fontSize;
private Dimension preferredSize;
public FilePageRenderer(File file, PageFormat pageFormat)
throws IOException {
fontSize = 12;
font = new Font("Serif", Font.PLAIN, fontSize);
BufferedReader in = new BufferedReader(new FileReader(file));
String line;
lineVector = new Vector();
while ((line = in.readLine()) != null)
lineVector.addElement(line);
in.close();
pageInit(pageFormat);
}
public void pageInit(PageFormat pageFormat) {
currentPageIndex = 0;
pageVector = new Vector();
float y = fontSize;
Vector page = new Vector();
for (int i = 0; i < lineVector.size(); i++) {
String line = (String) lineVector.elementAt(i);
page.addElement(line);
y += fontSize;
if (y + fontSize * 2 > pageFormat.getImageableHeight()) {
y = 0;
pageVector.addElement(page);
page = new Vector();
}
}
if (page.size() > 0)
pageVector.addElement(page);
preferredSize = new Dimension((int) pageFormat.getImageableWidth(),
(int) pageFormat.getImageableHeight());
repaint();
}
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
java.awt.geom.Rectangle2D r = new java.awt.geom.Rectangle2D.Float(0, 0,
preferredSize.width, preferredSize.height);
g2.setPaint(Color.white);
g2.fill(r);
Vector page = (Vector) pageVector.elementAt(currentPageIndex);
g2.setFont(font);
g2.setPaint(Color.black);
float x = 0;
float y = fontSize;
for (int i = 0; i < page.size(); i++) {
String line = (String) page.elementAt(i);
if (line.length() > 0)
g2.drawString(line, (int) x, (int) y);
y += fontSize;
}
}
public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
if (pageIndex >= pageVector.size())
return NO_SUCH_PAGE;
int savedPage = currentPageIndex;
currentPageIndex = pageIndex;
Graphics2D g2 = (Graphics2D) g;
g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
paint(g2);
currentPageIndex = savedPage;
return PAGE_EXISTS;
}
public Dimension getPreferredSize() {
return preferredSize;
}
public int getCurrentPage() {
return currentPageIndex;
}
public int getNumPages() {
return pageVector.size();
}
public void nextPage() {
if (currentPageIndex < pageVector.size() - 1)
currentPageIndex++;
repaint();
}
public void previousPage() {
if (currentPageIndex > 0)
currentPageIndex--;
repaint();
}
}
}
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