Name: mc57594 Date: 11/21/99

java version "1.2.2"
Classic VM (build JDK-1.2.2-W, native threads, symcjit)

printing a concept map (consists of nodes and links)works fine in NT4.0 machine
but give a "caused an exception IOH on module JVM.DLL at 0177:504dcbf6" error.

code call printing:
 public void run() {
         MapView view=(MapView)getDesktop().getMapView ();//MapView:view is the
//printable
         PageFormat pf=new PageFormat();
         PrinterJob pj=PrinterJob.getPrinterJob();
         pj.setPrintable(view,pf);
        if( pj.printDialog()){
                Cursor cursor = view.getCursor();
                try{
                   view.getController().stopBlinkingTextCursor();
                   view.setDoubleBuffering(false);
view.setCursor(Cursor.getPredefinedCursor(Cursor.WAIT_CURSOR));
                   view.getToolkit().sync();
                   pj.print();
                  }catch (Exception PrintException) {
                          ServerSingleton.log(PrintException);
                  } finally{
                      //Get rid of the print Job Object.
                        if (pj != null)
                            pj=null;
                        view.setCursor(cursor);
                        view.getToolkit().sync();
                        view.setDoubleBuffering(true);
                        view.getController().resumeBlinkingTextCursor();
                  }
        }
   }

print method in MapView:
public int print(Graphics g, PageFormat pf, int pageIndex) throws
PrinterException {
         //find the area that actually has the objects.
          if(m_mapBounds==null){
               m_mapBounds = getMinBoundingRect();
          }
          //get the label that should be the title of this page
          if(m_pageLabel==null){
               getPageLabel();
          }
           Graphics2D g2 = (Graphics2D) g;
            g2.setColor(Color.black);
          //get footer height
            int fontHeight=g2.getFontMetrics().getHeight();
          // int fontDesent=g2.getFontMetrics().getDescent();


           //calculate the total num of pages
              //the paper size
           double height=pf.getImageableHeight()-fontHeight;
           double width=pf.getImageableWidth()+60;
              //the columns
              int nw=(int)Math.ceil(m_mapBounds.width/width);
              //the rows
              int ny=(int)Math.ceil((m_mapBounds.height)/height);
           int totalPages=nw*ny;

           //start to render the pages
           if(pageIndex>=totalPages) {
                      return NO_SUCH_PAGE;
           }

        // g2.translate(pf.getImageableX(),pf.getImageableY());

          //this section'postiton, index from 0
               int rowIndex=(int)Math.floor(pageIndex/nw);
               int colIndex= pageIndex-nw*(rowIndex);
           //draw footer
           String footer=m_pageLabel+": page "+ (rowIndex+1)+"-"+(colIndex+1);
      g2.drawString(footer,
                      (int)width/2-g2.getFontMetrics().stringWidth(footer)/2,
                      (int)(height+fontHeight)+15);//bottom center


           //draw the map area
              //clip a section from map
               //set the beginning position
                g2.translate(-m_mapBounds.x,-(m_mapBounds.y));
                g2.translate(-colIndex*width,-rowIndex*height);
               //clip the section
                 int sx=(int)Math.ceil(m_mapBounds.x+colIndex*width);
                 int sy=(int)Math.ceil(m_mapBounds.y+height*rowIndex);
                 int rx=(int)Math.ceil(width);
                 int ry=(int)Math.ceil(height);
                 g2.setClip (sx,sy,rx,ry);

                 paint (g2);
           return Printable.PAGE_EXISTS;

   }
the paint method will cause all the components (nodes and links on the map
(inside the clip error)to paint)
(Review ID: 97234)
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From: "Holly Q. Li"
To: "Mark Chamness"
Subject: RE: java bug 4293262 - printing
Date: Tue, 23 Nov 1999 14:17:50 -0700

1) My Printable is quite big so I am afraid that I cannot provide you
with a complete runnable code.
2) I have traced the bug to the statement "g2.drawString(..)". (inorder
to draw the page title). Without this statement, the printing method
works fine on both NT and win9x. (somehow, adding a component with label
can be the work arround to this problem, but not all components works).
3) The printer is a HPLaserJet 4000N and the driver is HP LaserJet 4000
Series PCL6.
4) The 1.3 beta works the same way as 1.2.2.

mark.chamness@Eng 1999-11-23
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