Name: dbT83986 Date: 03/02/99


Hi My self and others are wondering why bug 4149301 is closed.
Printing is very slow for simple line drawings using the 2d package.
A workaround is given "subclass graphics2d to use postscript"
but no mention of how to do this or examples is given.
-dave
###@###.###
(Review ID: 54954)
======================================================================

blaid@eng 3/11/99 - User sent code to illustrate problem

import javax.swing.*;
import java.awt.*;
import java.awt.Graphics2D;
import java.awt.geom.*;
import java.awt.event.*;
import java.awt.print.*;

//**********************************************************************
*******
public class slowPrint{
//**********************************************************************
******
  static PlotXY thePlot = new PlotXY();
    //***************************
    public static void main (String args[]){
    //**************************

        JFrame aJFrame = new JFrame("Slow Print!");
        aJFrame.setSize(500,530);
        //Set up menu
        JMenuBar mb = new JMenuBar();
        mb.add(new printMenu());
        aJFrame.setJMenuBar(mb);

        aJFrame.getContentPane().add(thePlot);
        aJFrame.addWindowListener(new WindowAdapter() {
            public void windowClosing (WindowEvent e)
            {
                System.exit(0);
            }
         });

         //Start the show...
         aJFrame.setVisible(true);
    }
 
   //*******************************************************************
**********
    static class printMenu extends JMenu {
 
   //*******************************************************************
**********
            //****************************
            public printMenu(){
            //****************************
                super("Print");
                //Add Plot Menu Item
                JMenuItem m=new JMenuItem("Print");
                m.addActionListener(new printActionListener());
                add(m);
            }
            //****************************
             class printActionListener implements ActionListener{
            //****************************
                public void actionPerformed(ActionEvent e){
                    PrinterJob pj = PrinterJob.getPrinterJob();

                     pj.setPrintable(thePlot);
                     if(pj.printDialog()){
                        try{pj.print();}
                        catch (PrinterException pe){
                            System.out.println(pe);
                         }

                      }

                }
             }
    }


     //*****************************************************************
************
    static class PlotXY extends JPanel implements Printable{
 
   //*******************************************************************
**********


       //*****************************
        public PlotXY(){
       //*****************************
            super();
            //do our own initialization.
            setSize(500,500);
            setBackground(Color.white);
          }
        //*****************************
        public int print(Graphics g, PageFormat pf, int pageIndex){
        //*****************************
            if(pageIndex !=0) return NO_SUCH_PAGE;
            Graphics2D g2 = (Graphics2D) g;
            pf.setOrientation(java.awt.print.PageFormat.LANDSCAPE);
            Dimension d = getSize();
 
           setSize((int)pf.getImageableWidth(),(int)pf.getImageableHeigh
t());
            g2.translate(pf.getImageableX(),pf.getImageableY());
            paint(g2);

            setSize(d);

            return PAGE_EXISTS;
            }

        //***************************************************************
        public void paint(Graphics g){
        //***************************************************************
            //First call parent object paint function
            super.paint(g);
            //Obligitory conversion of graphics to graphics2d
            GeneralPath gp1 = new GeneralPath();
            GeneralPath gp2 = new GeneralPath();
            Graphics2D g2d = (Graphics2D) g;
            Point2D.Double gpoint= new Point2D.Double(0,250);
            //initial move tos
            gp1.moveTo((float)gpoint.x,(float)gpoint.y);
            gp2.moveTo((float)gpoint.x,(float)gpoint.y);

            g2d.setColor(Color.red);

            for (double i = 1;i<250;i++){
                gpoint.setLocation(2*i,250+ (100*Math.sin(i/4)));
                gp1.lineTo((float)gpoint.x,(float)gpoint.y);
                g2d.drawRect((int) gpoint.x,(int)gpoint.y, 1,1);

                gpoint.setLocation(2*i,250+ (200*Math.sin(i/8)));
                gp2.lineTo((float)gpoint.x,(float)gpoint.y);
                g2d.drawRect((int) gpoint.x,(int)gpoint.y, 1,1);

            }
            g2d.setColor(Color.blue);
            g2d.draw(gp1);
            g2d.draw(gp2);
        }

    }

}