package printtable;import java.awt.*;import java.awt.geom.*;import java.awt.print.*;import javax.swing.*;/** * Title:        PrintTable * Description:  A java jTable Print Programme. * Enable set the wighth and highth. * Copyright:    Copyright (c) 2002 * Company:      TopShine * @author ghostliang * @version 1.0 */public class PrintComponent extends JPanel{  /*   *The item to be printed   */  protected Printable printable;  /*   *PageFormat to use when printing   */  protected PageFormat pageFormat;  /*   *The page that is currently displayed   */  protected int displayPage;  /*   *The scale factor(1.0 = 100%)   */  protected double scaleFactor;  //init the component  public PrintComponent(Printable newPrintable,PageFormat newPageFormat) {    this.setPrintabel(newPrintable);    this.setPageFormat(newPageFormat);    this.setDisplayPage(0);    this.setScaleFactor(100);    this.setBackground(Color.gray);  }  //get and set some variable  public void setPrintabel(Printable newPrintable)  {    printable = newPrintable;    revalidate();  }  public void setPageFormat(PageFormat newPageFormat)  {    pageFormat = newPageFormat;    revalidate();  }  public void setDisplayPage(int page)  {    displayPage = page;    revalidate();  }  public void setScaleFactor(double scale)  {    scaleFactor = scale;    revalidate();  }  public double getScaleFactor()  {    return scaleFactor;  }  //get the print size  public Dimension getSizeWithScale(double scale)  {    Paper paper = pageFormat.getPaper();    int width;    int height;    if(pageFormat.getOrientation() == 1)    {      width = ((int)(paper.getWidth() * scale / 100));      height = ((int)(paper.getHeight() * scale / 100));    }    else    {      height = ((int)(paper.getWidth() * scale / 100));      width = ((int)(paper.getHeight() * scale / 100));    }    return new Dimension(width,height);  }  public Dimension getPreferredSize()  {    return getSizeWithScale(scaleFactor);  }  public Dimension getMinimumSize()  {    return getPreferredSize();  }  public void paintComponent(Graphics newGraphics)  {    super.paintComponent(newGraphics);    Graphics2D newGraphics2D = (Graphics2D)newGraphics;    int allOffsetX = 0;    int allOffsetY = 0;    //save infomation of the Graphics    AffineTransform newAffineTransform = newGraphics2D.getTransform();    //set the paper in the mid of the printComponent Panel    int thisWidth = this.getWidth();    int thisHeight = this.getHeight();    Dimension size = this.getSizeWithScale(scaleFactor);    int offsetX = (thisWidth - size.width) / 2;    int offsetY = (thisHeight - size.height) / 2;    newGraphics2D.translate(offsetX,offsetY);    allOffsetX += offsetX;    allOffsetY += offsetY;    newGraphics2D.scale(scaleFactor/100,scaleFactor/100);    try    {      printable.print(newGraphics,pageFormat,displayPage);    }    catch(PrinterException e)    {    }    newGraphics2D.translate(-allOffsetX,-allOffsetY);    newGraphics2D.setTransform(newAffineTransform);  }}