print

---FilePageRenderer.java-----------------------------------------------------------

import java.awt.*;

import java.awt.print.*;

import java.io.*;

import java.util.Vector;

import javax.swing.*;

public class  FilePageRenderer extends JComponent implements Printable{

private int mCurrentPage;

private Vector mLines;

private Vector mpages;

private Font mFont;

private int mFontSize;

private Dimension mPreferredSize;

public FilePageRenderer(File file,PageFormat pageFormat) throws IOException{

mFontSize=12;

mFont=new Font("serif",Font.PLAIN,mFontSize);

BufferedReader in =new BufferedReader(new FileReader(file));

String line;

mLines=new Vector();

while((line=in.readLine()) != null)

mLines.addElement(line);

in.close();

paginate(pageFormat);

}

public void paginate(PageFormat pageFormat){

mCurrentPage=0;

mpages=new Vector();

float y=mFontSize;

Vector page=new Vector();

for(int i=0; i<mLines.size(); i++){

String line=(String)mLines.elementAt(i);

page.addElement(line);

y+=mFontSize;

if(y+mFontSize*2> pageFormat.getImageableHeight()){

y=0;

mpages.addElement(page);

page=new Vector();

}

}

if(page.size()>0) mpages.addElement(page);

mPreferredSize=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,mPreferredSize.width,mPreferredSize.height);

g2.setPaint(Color.white);

g2.fill(r);

Vector page=(Vector ) mpages.elementAt(mCurrentPage);

g2.setFont(mFont);

g2.setPaint(Color.black);

float x=0;

float y = mFontSize;

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+=mFontSize;

}

}

public int print(Graphics g,PageFormat pageFormat, int pageIndex){

if(pageIndex>=mpages.size()) return NO_SUCH_PAGE;

int savedPage= mCurrentPage;

mCurrentPage=pageIndex;

Graphics2D g2=(Graphics2D)g;

g2.translate(pageFormat.getImageableX(),pageFormat.getImageableY());

paint(g2);

mCurrentPage=savedPage;

return PAGE_EXISTS;

}

public Dimension getPreferredSize(){

return mPreferredSize;

}

public int getCurrentPage(){

return mCurrentPage;

}

public int getNumPages(){

return mpages.size();

}

public void nextPage(){

if(mCurrentPage<mpages.size()-1)

mCurrentPage++;

repaint();

}

public void previousPage(){

if(mCurrentPage>0)

mCurrentPage--;

repaint();

}

}

---FilePrinter.java------------------------------------------------------------------

import java.awt.*;

import java.awt.event.*;

import java.awt.print.*;

import javax.swing.*;

import javax.swing.event.*;

public class FilePrinter extends JFrame{

public static void main(String [] args){

new FilePrinter();

}

private PageFormat mPageFormat;

private FilePageRenderer mPageRenderer;

private String mTitle;

public FilePrinter(){

super("FilePrint");

createUI();

PrinterJob pj=PrinterJob.getPrinterJob();

mPageFormat=pj.defaultPage();

setVisible(true);

}

protected void createUI(){

setSize(350,300);

center();

Container content=getContentPane();

content.setLayout(new BorderLayout());

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=mPageRenderer.getCurrentPage()+1;

int numPages=mPageRenderer.getNumPages();

setTitle(mTitle+"-page"+currentPage+"of"+numPages);

}

public class FileOpenAction extends AbstractAction{

public FileOpenAction(){super("open...");}

public void actionPerformed(ActionEvent ae){

JFileChooser fc=new JFileChooser(".");

int result=fc.showOpenDialog(FilePrinter.this);

if(result !=0){return;}

java.io.File f= fc.getSelectedFile();

if(f==null){return;}

try{

mPageRenderer=new FilePageRenderer (f,mPageFormat);

mTitle="["+f.getName()+"]";

showTitle();

JScrollPane jsp=new JScrollPane(mPageRenderer);

getContentPane().removeAll();

getContentPane().add(jsp,BorderLayout.CENTER);

validate();

}catch(java.io.IOException ioe){

System.out.println(ioe);

}

}

}

public class FilePrintAction extends AbstractAction{

public FilePrintAction(){super("print");}

public void actionPerformed(ActionEvent ae){

PrinterJob pj= PrinterJob.getPrinterJob();

pj.setPrintable(mPageRenderer,mPageFormat);

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();

mPageFormat=pj.pageDialog(mPageFormat);

if(mPageRenderer !=null){

mPageRenderer.paginate(mPageFormat);

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("Nextpage");}

public void actionPerformed(ActionEvent ae){

if(mPageRenderer!=null) mPageRenderer.nextPage();

showTitle();

}

}

public class PagePreviousPageAction extends AbstractAction{

public PagePreviousPageAction() {super("previoue page");}

public void actionPerformed(ActionEvent ae){

if(mPageRenderer !=null) mPageRenderer.previousPage();

showTitle();

}

}

}