Qui c'è una classe che potrebbe fare al caso tuo: http://www.developerdotstar.com/community/node/124
codice:
/*
*Copied from this tutorial:
* http://www.apl.jhu.edu/~hall/java/Sw...al-Printing...
* And also from a post on the forums at java.swing.com.
*My apologies that do not have a link to that post, by my hat goes off
*to the poster because he/she figured out the sticky problem of paging properly
*when printing a Swing component. */
import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
public class PrintUtilities implements Printable {
private Component componentToBePrinted;
public static void printComponent(Component c) {
new PrintUtilities(c).print();
}
public PrintUtilities(Component componentToBePrinted) {
this.componentToBePrinted = componentToBePrinted;
}
public void print() {
PrinterJob printJob = PrinterJob.getPrinterJob();
printJob.setPrintable(this);
if (printJob.printDialog())
try {
System.out.println("Calling PrintJob.print()");
printJob.print();
System.out.println("End PrintJob.print()");
}
catch (PrinterException pe) {
System.out.println("Error printing: " + pe);
}
}
public int print(Graphics g, PageFormat pf, int pageIndex) {
int response = NO_SUCH_PAGE;
Graphics2D g2 = (Graphics2D) g;
// for faster printing, turn off double buffering
disableDoubleBuffering(componentToBePrinted);
Dimension d = componentToBePrinted.getSize(); //get size of document
double panelWidth = d.width; //width in pixels
double panelHeight = d.height; //height in pixels
double pageHeight = pf.getImageableHeight(); //height of printer page
double pageWidth = pf.getImageableWidth(); //width of printer page
double scale = pageWidth / panelWidth;
int totalNumPages = (int) Math.ceil(scale * panelHeight / pageHeight);
// make sure not print empty pages
if (pageIndex >= totalNumPages) {
response = NO_SUCH_PAGE;
}
else {
// shift Graphic to line up with beginning of print-imageable region
g2.translate(pf.getImageableX(), pf.getImageableY());
// shift Graphic to line up with beginning of next page to print
g2.translate(0f, -pageIndex * pageHeight);
// scale the page so the width fits...
g2.scale(scale, scale);
componentToBePrinted.paint(g2); //repaint the page for printing
enableDoubleBuffering(componentToBePrinted);
response = Printable.PAGE_EXISTS;
}
return response;
}
public static void disableDoubleBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(false);
}
public static void enableDoubleBuffering(Component c) {
RepaintManager currentManager = RepaintManager.currentManager(c);
currentManager.setDoubleBufferingEnabled(true);
}
}
L'ho provata, sembra funzionare bene...
Rispondi quotando
