Name: joT67522 Date: 12/18/97


I am using Windows 95 and Java 1.1.5.
I have an HP LaserJet 4MP,
which is a 600dpi PostScript printer.
PrintJob reports a pageResolution of 600
pixels per inch, a
pageDimension.width of 612 pixels
which is 8.5 * 72)
and a pageDimension.height
of 792 pixels (which is 11 * 72).
Since PostScript's
native coordinate system
is 72 dpi, it is reasonable to assume that
getPageDimension is returning
coordinates based on 72 dpi. Indeed,
printing works correctly
if I position graphics objects as if it
were a 72 dpi printer.

This is wrong: pageResolution and pageDimension
should be
consistent. Either getPageResolution should
report 72dpi or getPageDimension
should return numbers consistent with 600 dpi
(width=8.5*600 and height=11*600).

While screen-like printer resolutions
(e.g., 72 dpi) may be sufficient
and convenient
for many applications, other applications
(including mine) need
access to every pixel. Thus I hope you will
fix pageDimension
to give me the full access to my 600 dpi printer.

I don't know if this is a Java problem or a
problem with the printer
driver in Windows, but it is a problem.

P.S. This is an improvement over Java 1.1.4,
which gave really odd
pageDimension values.

---

Enclosed is a small test program. When I run it on Windows 95 with an
HP LaserJet 4MP (PostScript) printer, the console prints:

Java: Sun Microsystems Inc. 1.1.5, class 45.3.
dpi=600 width=612 height=792

and it prints a one inch square on the printer.

Again, I hope your solution leads to me getting full access to my 600
dpi printer (that is, width should be 5100=8.5*600 and height should be
6600=11*600).

Also, the bug was sort of fixed. Java 1.1.4 gave really odd
pageDimension values. At least there is some logic now. Even it I am
left with a 72 dpi printer.

/* Start test program *****************************************/
import java.awt.*;

public class BobsPrintTest extends Frame {


  //constructor
  public BobsPrintTest() {
    }

  /**
   * This displays the print dialog box, prints printJob values, and
   * prints 72x72 pixel square.
   * <UL>
   * <LI> This returns an error string ("" if no error).
   * </UL>
   */
  public String print() {
    /*12/15/97 Java 1.1.5 is a little better
      For my 4MP it reports 600 dpi (correct),
        width= 612 (which is 8.5" * 72 dpi)
        and height= 792 (which is 11 * 72 dpi)
        Note using printer buttons to select 300dpi still yields
        report of 600 dpi.
      Note using printer buttons to select PCL only still yields
        report of 600, 612, 792 and prints correctly.
    */

    Graphics g=null;
    java.util.Properties printPrefs=new java.util.Properties();

    //call print job dialog
    PrintJob job=Toolkit.getDefaultToolkit().getPrintJob(
      this, "Bob's Print Test", printPrefs);
    if (job==null) return ""; //if user cancelled, return

    try {
      //get and print the pringJob values
      int dpi=job.getPageResolution();
      Dimension pageSize=job.getPageDimension();
      int pageWidth=pageSize.width;
      int pageHeight=pageSize.height;
      System.out.println("dpi="+dpi+
        " width="+pageWidth+
        " height="+pageHeight);

      //get the page's Graphics object
      g=job.getGraphics();
      if (g==null) {
        job.end();
        return "The page graphics object is null!";
        }

      //draw the square
      g.setColor(Color.black);
      g.drawRect(100, 100, 72, 72);
      g.dispose();
      job.end();
      }
    catch (Exception e) {
      if (g!=null) g.dispose();
      job.end();
      return "Unexpected error.";
      }
    return "";

    }


  /**
   * Print some basic test information, create the frame, and run
   * the print test.
   */
  public static void main(String args[]) {
    System.out.println("Java: "+
      System.getProperty("java.vendor")+" "+
      System.getProperty("java.version")+", class "+
      System.getProperty("java.class.version")+".");

    BobsPrintTest test=new BobsPrintTest();
    test.setBounds(0,0, 600, 350);
    test.setVisible(true);
    test.print();
    System.exit(0);

    }

  }
/* end test program ******************************************/



(Review ID: 21974)

======================================================================
###@###.### 1998-01-15

Another user report similar page dimension problem. Even though the bug
titled print scale to large, the test case points to the page dimension
and resolution.

The PrintJob scale is still not quite fixed.
While it is larger than before, now it is too
large for the page. The following code should
produce a border around the edges of a page:

   Toolkit tk = Toolkit.getDefaultToolkit();
   PrintJob pjob = tk.getPrintJob(null, "Print Test", null);
   Dimension psize = pjob.getPageDimension();
   Graphics pg = pjob.getGraphics();

   pg.drawRect(0, 0, psize.width, psize.height);

   pg.dispose();
   pjob.end();


The rectangle produced goes off the right and
bottom edges of the page.