Discussion :

[sider]

Bonjour

Voila je dois imprimé un bon de reçu alors je me suis dis que j'utiliserai un JLabel en lui ajoutant la fonction print mais le vraie probleme c que j'arrive pas a ecrire un contenu de texte comme un paragraphe dans le JLabel utliser !

par example :

JLabel ecran = new JLabel();

ecran = new JLabel(
"************
************
************");

voila ce que j'éssaye de vous expliquer c'est que je veux imprimer un paragraphe et pas une phrase!

mais ca ne marche pas, quelqu'un aurai une idée a me proposer ?

[Caalador]

Si tu arrives à faire un JPanel présenté comme tu le souhaites, j'avais trouvé cette class sur le net, qui marche pas mal du tout pour imprimer un Component :

Code :

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import java.awt.*;
import javax.swing.*;
import java.awt.print.*;
 
/** A simple utility class that lets you very simply print
 *  an arbitrary component. Just pass the component to the
 *  PrintUtilities.printComponent. The component you want to
 *  print doesn't need a print method and doesn't have to
 *  implement any interface or do anything special at all.
 *  <P>
 *  If you are going to be printing many times, it is marginally more 
 *  efficient to first do the following:
 *  <PRE>
 *    PrintUtilities printHelper = new PrintUtilities(theComponent);
 *  </PRE>
 *  then later do printHelper.print(). But this is a very tiny
 *  difference, so in most cases just do the simpler
 *  PrintUtilities.printComponent(componentToBePrinted).
 *
 *  7/99 Marty Hall, http://www.apl.jhu.edu/~hall/java/
 *  May be freely used or adapted.
 */
 
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 {
        printJob.print();
      } catch(PrinterException pe) {
        System.out.println("Error printing: " + pe);
      }
  }
 
  public int print(Graphics g, PageFormat pageFormat, int pageIndex) {
    if (pageIndex > 0) {
      return(NO_SUCH_PAGE);
    } else {
      Graphics2D g2d = (Graphics2D)g;
      g2d.translate(pageFormat.getImageableX(), pageFormat.getImageableY());
      disableDoubleBuffering(componentToBePrinted);
      g2d.scale(0.7, 0.7);
      componentToBePrinted.paint(g);
      enableDoubleBuffering(componentToBePrinted);
      return(PAGE_EXISTS);
    }
  }
 
  /** The speed and quality of printing suffers dramatically if
   *  any of the containers have double buffering turned on.
   *  So this turns if off globally.
   *  @see enableDoubleBuffering
   */
  public static void disableDoubleBuffering(Component c) {
    RepaintManager currentManager = RepaintManager.currentManager(c);
    currentManager.setDoubleBufferingEnabled(false);
  }
 
  /** Re-enables double buffering globally. */
 
  public static void enableDoubleBuffering(Component c) {
    RepaintManager currentManager = RepaintManager.currentManager(c);
    currentManager.setDoubleBufferingEnabled(true);
  }
}