Name: tb29552 Date: 10/30/98


/*
Using the Pageable approach, the awt print
engine calls the print() method twice.
Anything that is drawn to the graphics
context in the first call is lost, only
the second rendering shows up in the output.

If the print engine needs to call the print()
method twice for a page, the API documentation
indicates that it should do so with different
clipping each time, in order to allow for
banded printing. In this case, it should either
call print() once, or use different clip regions.

In any case, it should NEVER ask to have
something rendered that doesn't make it to
the page.

The following code demonstrates this on
both Solaris 2.5.1 and Windows NT 4.0
Service Pack 3.

Note that the first pass through the print()
method should draw a grid. The second pass
draws an ellipse. The ellipse is the only
thing that shows up in the printed output.

------ TestPrint.java -------
*/

import java.io.*;
import java.awt.*;
import java.awt.geom.*;
import java.awt.print.*;

public class TestPrint {
    public static void main(String[] argv)
    {
        Report report = new Report();

        report.print();
    }
}

class Report {
    public void print()
    {
        PrinterJob pj = PrinterJob.getPrinterJob();

        pj.setJobName("Test Report");

        PageFormat pf = pj.defaultPage();

        Book book = createBook(pf);

        pj.setPageable(book);

        if (pj.printDialog())
        {
            try
            {
                pj.print();
            }
            catch(Exception e)
            {
                System.out.println(e);
            }
        }
    }

    private Book createBook(PageFormat format)
    {
        Book retval = new Book();

        Printable printable = new Printable()
        {
            int count = 0;

            public int print(Graphics g, PageFormat pf, int pi)
            {
                System.out.println("print() called...");
                System.out.println("pi = " + pi + " clip = " + g.getClipBounds());

                g.setColor(Color.black);

                Graphics2D g2d = (Graphics2D) g;

                g2d.setStroke(new BasicStroke(0.01 f));

                double x = pf.getImageableX();
                double y = pf.getImageableY();
                double width = pf.getImageableWidth();
                double height = pf.getImageableHeight();

                switch (count)
                {
                case 0:
                    Line2D.Double line = new Line2D.Double();

                    for (double i = x; i <= x + width; i += 1.0)
                    {
                        line.setLine(i, y, i, y + height);
                        g2d.draw(line);
                    }

                    for (double i = y; i <= y + height; i += 1.0)
                    {
                        line.setLine(x, i, x + width, i);
                        g2d.draw(line);
                    }

                    break;

                case 1:
                    Ellipse2D.Double ellipse =
                        new Ellipse2D.Double(x, y, width, height);

                    g2d.draw(ellipse);

                    break;
                }

                count++;

                return Printable.PAGE_EXISTS;
            }
        };

        retval.append(printable, format);

        return retval;
    }
}

(Review ID: 41695)
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