package printdemo;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.print.attribute.standard.*;
import javax.swing.*;
import java.awt.print.*;
import javax.print.attribute.*;
import javax.swing.text.*;
public class Print_TextArea extends JFrame {
public Print_TextArea() {
super("Print TextArea");
toolbar = new JToolBar();
printBtn = new JButton();
textarea = new SimplePrintableJTextArea_();
setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
printBtn.setText("Print");
printBtn.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
printBtnActionPerformed(evt);
}
});
toolbar.add(printBtn);
getContentPane().add(toolbar, BorderLayout.NORTH);
textarea.setBackground(new Color(204, 204, 204));
textarea.setText("TEST");
getContentPane().add(textarea, BorderLayout.CENTER);
setSize(400,300);
setLocationRelativeTo(null);
}
private void printBtnActionPerformed(ActionEvent evt) {
textarea.print();
}
public static void main(String args[]) {new Print_TextArea().setVisible(true);}
private JButton printBtn;
private SimplePrintableJTextArea_ textarea;
private JToolBar toolbar;
}
/*
* SimplePrintableJTextArea.java
*
* @author David J. Ward
*/
class SimplePrintableJTextArea extends JTextArea implements Printable {
/**
* Holds value of property jobName.
*/
private String jobName = "Print Job for "+System.getProperty("user.name");
/** Creates a new instance of PrintableJTextArea */
public SimplePrintableJTextArea() {
super();
}
public SimplePrintableJTextArea(String text) {
super(text);
}
int inchesToPage(double inches) {
return (int)(inches*72.0);
}
int left_margin = inchesToPage(0.5);
int right_margin = inchesToPage(0.5);
int top_margin = inchesToPage(0.5);
int bottom_margin = inchesToPage(0.5);
public void print() {
// Create a printerJob object
final PrinterJob printJob = PrinterJob.getPrinterJob();
// Set the printable class to this one since we
// are implementing the Printable interface
printJob.setPrintable(this);
printJob.setJobName(jobName);
//Collect the print request attributes.
final HashPrintRequestAttributeSet attrs = new HashPrintRequestAttributeSet();
attrs.add(OrientationRequested.PORTRAIT);
attrs.add(Chromaticity.COLOR);
attrs.add(Chromaticity.MONOCHROME);
attrs.add(PrintQuality.NORMAL);
attrs.add(PrintQuality.DRAFT);
attrs.add(PrintQuality.HIGH);
//Assume US Letter size, someone else can do magic for other paper formats
attrs.add(new MediaPrintableArea(0.25f, 0.25f, 8.0f, 10.5f, MediaPrintableArea.INCH));
// Show a print dialog to the user. If the user
// clicks the print button, then print, otherwise
// cancel the print job
if (printJob.printDialog()) {
//You may want to do the printing in a thread or SwingWorker
//But this gets the job done all the same.
try {
printJob.print(attrs);
} catch (Exception PrintException) {
PrintException.printStackTrace();
}
}
}
public int print(Graphics graphics, PageFormat pageFormat, int pageIndex) throws PrinterException {
Graphics2D g2 = (Graphics2D) graphics;
//Found it unwise to use the TextArea font's size,
//We area just printing text so use a a font size that will
//be generally useful.
g2.setFont(getFont().deriveFont(9.0f));
int bodyheight = (int)pageFormat.getImageableHeight();
int bodywidth = (int)pageFormat.getImageableWidth();
int lineheight = g2.getFontMetrics().getHeight()-(g2.getFontMetrics().getLeading()/2);
int lines_per_page = (bodyheight-top_margin-bottom_margin)/lineheight;
int start_line = lines_per_page*pageIndex;
if (start_line > getLineCount()) {
return NO_SUCH_PAGE;
}
int page_count = (getLineCount()/lines_per_page)+1;
int end_line = start_line + lines_per_page;
int linepos = (int)top_margin;
int lines = getLineCount();
g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
for (int line = start_line; line < end_line; line++) {
try {
String linetext = getText(
getLineStartOffset(line),
getLineEndOffset(line)-getLineStartOffset(line));
g2.drawString(linetext, left_margin, linepos);
} catch (BadLocationException e) {
//never a bad location
}
linepos += lineheight;
if (linepos > bodyheight-bottom_margin) {
break;
}
}
return Printable.PAGE_EXISTS;
}
}
