Re: printing facility

• To: Jacky Saint <saintjacky@xxxxxxxxxxx>, Ugo Taddei <p6taug@xxxxxxxxxxxxxxxxx>
• Subject: Re: printing facility
• From: Curtis Rueden <curtis@xxxxxxxxxxxxx>
• Date: Fri, 09 Mar 2001 14:02:43 -0600

Hi Jacky et al,

You can get the DisplayImpl from a BasicSSCell (a spreadsheet cell)
by calling BasicSSCell.getDisplay().  However, whenever a BasicSSCell
switches dimensions, a new DisplayImpl must be initialized.  So, the
best way to insure the spreadsheet always has cells with white
backgrounds is to make a simple extension.

Below is an extension of visad.ss.FancySSCell that will hopefully do
the trick for you.

-Curtis

At 02:10 3/9/01, Ugo Taddei wrote:
>Hi Jacky,
>
>Jacky Saint wrote:
>> Hi,
>>     I'm grateful for the help I recieved previously. Currently I am using
>> SpreadSheet.java to implement my program. The problem is when I print a cell
>> the background comes out as black. However I would like to change this so
>> that the background is white, but I am having problem locating the class
>> file that specifies the background. Please can someone tell me where I
>> should look to find this class, or maybe if someone has already implemented
>> this can you give me some guidance on how I can do this.
>
>VisAD Tutorial shows you in section 4.14 how to change the display's
>background color.
>
>First do
>
>DisplayRenderer dRenderer = display.getDisplayRenderer();
>
>then do
>
>float[] backColor = colorToFloats(Color.lightGray);
>dRenderer.setBackgroundColor(backColor[0], backColor[1],backColor[2]);
>
>Please see the whole section for more details:
> http://www.ssec.wisc.edu/~billh/tutorial/s4/Section4.html#section4_14
>
>However, when using the SpreadSheet, you'll have to know where the
>display is. I'm not sure how to get the display from a SpreadSheet cell
>but I believe Curtis can show you the way.
>
>Cheers,
>
>Ugo


-----------------------
//
// MySS.java
//

import java.io.*;
import java.awt.Frame;
import java.rmi.*;
import visad.*;
import visad.formula.*;
import visad.ss.*;

/** An extension of visad.ss.FancySSCell for cells with white backgrounds. */
public class MySS extends FancySSCell {

  /** Extended from visad.ss.FancySSCell. */
  public MySS(String name, FormulaManager fman, RemoteServer rs,
    boolean slave, String save, Frame parent) throws VisADException,
    RemoteException
  {
    super(name, fman, rs, slave, save, parent);
  }

  /**
   * Extends visad.ss.FancySSCell.constructDisplay so that whenever a
   * new DisplayImpl is constructed, its background is set to white.
   */
  public synchronized boolean constructDisplay() {
    boolean success = super.constructDisplay();
    if (success) {
      DisplayRenderer dRenderer = VDisplay.getDisplayRenderer();
      try {
        // set background color
        dRenderer.setBackgroundColor(1.0f, 1.0f, 1.0f); // white
        dRenderer.setBoxColor(0.0f, 0.0f, 0.0f); // black
      }
      catch (VisADException exc) { exc.printStackTrace(); }
      catch (RemoteException exc) { exc.printStackTrace(); }
    }
    return success;
  }

  /**
   * Launches MySS, copied largely from visad.ss.SpreadSheet.
   * To run, type "java MySS" at the command prompt.
   */
  public static void main(String[] argv) {
    String usage = "\n" +
      "Usage: java [-mx###m] MySS [cols rows]\n" +
      "       [-gui] [-no3d] [-debug]\n" +
      "       [-server name] [-client address] [-slave address]\n\n" +
      "###\n" +
      "     Maximum megabytes of memory to use.\n" +
      "cols\n" +
      "     Number of columns in this spreadsheet.\n" +
      "rows\n" +
      "     Number of rows in this spreadsheet.\n" +
      "-gui\n" +
      "     Pop up an options window so that the user can\n" +
      "     select spreadsheet settings graphically.\n" +
      "-no3d\n" +
      "     Disable Java3D.\n" +
      "-debug\n" +
      "     Print stack traces for all errors.\n" +
      "-server name\n" +
      "     Initialize this spreadsheet as an RMI server\n" +
      "     with the given name.\n" +
      "-client address\n" +
      "     Initialize this spreadsheet as a clone of\n" +
      "     the server at the given RMI address.\n" +
      "-slave address\n" +
      "     Initialize this spreadsheet as a slaved clone\n" +
      "     of the server at the given RMI address.";
    int cols = 2;
    int rows = 2;
    String servname = null;
    String clonename = null;
    boolean guiOptions = false;
    int len = argv.length;
    if (len > 0) {
      int ix = 0;

      // parse command line flags
      while (ix < len) {
        if (argv[ix].charAt(0) == '-') {
          if (argv[ix].equals("-server")) {
            if (clonename != null) {
              System.out.println("A spreadsheet cannot be both a server " +
                "and a clone!");
              System.out.println(usage);
              System.exit(3);
            }
            else if (ix < len - 1) servname = argv[++ix];
            else {
              System.out.println("You must specify a server name after " +
                "the '-server' flag!");
              System.out.println(usage);
              System.exit(4);
            }
          }
          else if (argv[ix].equals("-client") || argv[ix].equals("-slave")) {
            if (servname != null) {
              System.out.println("A spreadsheet cannot be both a server " +
                "and a clone!");
              System.out.println(usage);
              System.exit(3);
            }
            else if (ix < len - 1) {
              clonename = argv[ix + 1];
              if (argv[ix].equals("-slave")) clonename = "slave:" + clonename;
              ix++;
            }
            else {
              System.out.println("You must specify a server after " +
                "the '" + argv[ix] + "' flag!");
              System.out.println(usage);
              System.exit(5);
            }
          }
          else if (argv[ix].equals("-gui")) guiOptions = true;
          else if (argv[ix].equals("-no3d")) BasicSSCell.disable3D();
          else if (argv[ix].equals("-debug")) {
            BasicSSCell.DEBUG = true;
            FormulaVar.DEBUG = true;
          }
          else {
            // unknown flag
            if (!argv[ix].equals("-help")) {
              System.out.println("Unknown option: " + argv[ix]);
            }
            System.out.println(usage);
            System.exit(1);
          }
        }
        else {
          // parse number of rows and columns
          boolean success = true;
          if (ix < len - 1) {
            try {
              cols = Integer.parseInt(argv[ix]);
              rows = Integer.parseInt(argv[ix + 1]);
              ix++;
              if (rows < 1 || cols < 1) {
                success = false;
              }
            }
            catch (NumberFormatException exc) {
              success = false;
            }
            if (!success) {
              System.out.println("Invalid number of columns and rows: " +
                argv[ix] + " x " + argv[ix + 1]);
              System.out.println(usage);
              System.exit(2);
            }
          }
          else {
            System.out.println("Unknown option: " + argv[ix]);
            System.out.println(usage);
            System.exit(1);
          }
        }
        ix++;
      }
    }
    final SpreadSheet ss = new SpreadSheet(60, 70,
      cols, rows, servname, clonename, "VisAD SpreadSheet", null, guiOptions)
    {
      protected FancySSCell createCell(String name, RemoteServer rs)
        throws VisADException, RemoteException
      {
        return new MySS(name, fm, rs, IsSlave, null, this);
      }
    };
  }

}
-----------------------

• References:
  • printing facility
    • From: Jacky Saint
  • Re: printing facility
    • From: Ugo Taddei