• Post Reply Bookmark Topic Watch Topic
  • New Topic
programming forums Java Mobile Certification Databases Caching Books Engineering Micro Controllers OS Languages Paradigms IDEs Build Tools Frameworks Application Servers Open Source This Site Careers Other Pie Elite all forums
this forum made possible by our volunteer staff, including ...
Marshals:
  • Campbell Ritchie
  • Jeanne Boyarsky
  • Ron McLeod
  • Paul Clapham
  • Liutauras Vilda
Sheriffs:
  • paul wheaton
  • Rob Spoor
  • Devaka Cooray
Saloon Keepers:
  • Stephan van Hulst
  • Tim Holloway
  • Carey Brown
  • Frits Walraven
  • Tim Moores
Bartenders:
  • Mikalai Zaikin

Swing Printing problem

 
Ranch Hand
Posts: 476
  • Mark post as helpful
  • send pies
    Number of slices to send:
    Optional 'thank-you' note:
  • Quote
  • Report post to moderator
Hi,
I got code for printing from JTextArea from this forum. I tried to run it, but all I get is the page number and no output from the JTextArea.
Here is the code:
import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
public class PrintJText implements Printable {
private JTextArea maJTextArea;
public static void printComponent(JTextArea maJTextArea) {
new PrintJText(maJTextArea).print();
}
public PrintJText(JTextArea maJTextArea) {
this.maJTextArea = maJTextArea;
}
public void print() {
PrinterJob pj = PrinterJob.getPrinterJob();
pj.setPrintable(PrintJText.this);
try{
if (pj.printDialog())
pj.print();
}
catch (Exception PrintException) {}
}
public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
Graphics2D g2 = (Graphics2D) g;
g2.setColor(Color.black);
int fontHeight = g2.getFontMetrics().getHeight();
int fontDesent = g2.getFontMetrics().getDescent();
double pageHeight = pageFormat.getImageableHeight() - fontHeight;
double pageWidth = pageFormat.getImageableWidth();
double headerHeightOnPage =16.5;
double oneRowHeight = fontHeight;
int numRowsOnAPage = (int) ((pageHeight - headerHeightOnPage)/oneRowHeight);
int totalNumPages=(int)Math.ceil(((double)(maJTextArea.getLineCount())/numRowsOnAPage));
System.out.println(totalNumPages);
double pageHeightForTable=oneRowHeight*numRowsOnAPage;
double tableWidth = 468;
double scale=1;
if (tableWidth >= pageWidth) {
scale = pageWidth / tableWidth;
}
double tableWidthOnPage = tableWidth*scale;
if(pageIndex>=totalNumPages) {
return NO_SUCH_PAGE;
}
g2.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
g2.drawString("Printing Page: "+(pageIndex+1), (int)pageWidth/2-35, (int)(pageHeight +fontHeight-fontDesent));
g2.translate(0f,headerHeightOnPage);
g2.translate(0f,-pageIndex*pageHeightForTable);
if (pageIndex + 1 == totalNumPages) {
int lastRowPrinted = numRowsOnAPage * pageIndex;
int numRowsLeft = totalNumPages*numRowsOnAPage - lastRowPrinted;
g2.setClip(0,(int)(pageHeightForTable * pageIndex),(int) Math.ceil(tableWidthOnPage),(int) Math.ceil(oneRowHeight * numRowsLeft));
}
else{
g2.setClip(0,(int)(pageHeightForTable*pageIndex),(int) Math.ceil(tableWidthOnPage),(int) Math.ceil(pageHeightForTable));
}
g2.scale(scale,scale);
maJTextArea.paint(g2);
g2.scale(1/scale,1/scale);
g2.translate(0f,pageIndex*pageHeightForTable);
g2.translate(0f, -headerHeightOnPage);
g2.setClip(0, 0,
(int) Math.ceil(tableWidthOnPage),
(int)Math.ceil(headerHeightOnPage));
g2.scale(scale,scale);
return Printable.PAGE_EXISTS;
}
public static void main(String[] args){
System.out.println("trying to print...");
PrintJText.printComponent(new JTextArea("test111"));
}
}
Can any one advise?
thanks,
Alex
 
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
reply
    Bookmark Topic Watch Topic
  • New Topic