package crosswordsage;

 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());

       Dimension d = componentToBePrinted.getSize(); //get size of document

       double panelWidth = d.width; //width in pixels

       double panelHeight = d.height; //height in pixels

       double pageHeight = pageFormat.getImageableHeight(); //height of printer page

       double pageWidth = pageFormat.getImageableWidth(); //width of printer page

       double scale = pageWidth / panelWidth * 0.7;

       int totalNumPages = (int) Math.ceil(scale * panelHeight / pageHeight);

       //make sure not print empty pages

       if (pageIndex >= totalNumPages)

       {

           return Printable.NO_SUCH_PAGE;

       }

       //shift Graphic to line up with beginning of next page to print

       g2d.translate(0f, -pageIndex * pageHeight);

       //scale the page so the width fits...

       g2d.scale(scale, scale);

       disableDoubleBuffering(componentToBePrinted);

       componentToBePrinted.paint(g2d);

       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);

   }

 }