Printing :)

[Rodolfo N. Duldulao, Jr.]

I have been tinkering with the java.awt.print and javax.print APIs.  The answer to your problem would be in these two.  I have tried printing and got some "successes".  Bottomline:  you will have to implement the Printable interface and "draw" what you want to print on a Graphics or Graphics2D object then return a defined integer representing if the printing is valid or not.  Using java.awt.print, you will need to set the Paper object and those you will have to print would be in a Book object. 

You may want to look at "Beginning Java 2" by Ivor Horton (Wrox publishing).  The book has got some examples on printing.  Good ones too.

[Rodolfo N. Duldulao, Jr.]

I saw this on your code.  I was downloading it when I made my first message (sorry).

In GantDiagram.java:
<code>
public int print(Graphics g, PageFormat pageFormat, int page)
    {
    if (page != 0) {
        return Printable.NO_SUCH_PAGE;
    }
    paint(g);
    return Printable.PAGE_EXISTS;
    }
</code>

This will print a blank page because "nothing" is drawn on your Graphics object g.

What I would suggest is that you have another method that does the painting (returns a Graphics) to be called by both paint() and print() methods.

[Rodolfo N. Duldulao, Jr.]

I am sorry again.  I didn't see the paint(g) line.
Still that wouldn't do anything on the Graphics object in print() because calling paint(g) I think would "paint" on the GUI and "not" on the paper.

[Rodolfo N. Duldulao, Jr.]

Suggested routine:

....paint(Graphics g) {
      g = getDrawing();
      ....
}

.....print(Graphics g, PageFormat p, int page) {
    if .....
    }
    g = getDrawing();
    return Printable.PAGE_EXISTS;
}

public Graphics getDrawing() {
       Graphics g = __?_.getGraphics();
       ......
       ......
       return g;
}

Hope this helps.   :)    

PS
I am sorry if i seem to mess up a bit(your discussion board i mean).  i'm at my office desk fighting off boredom and stress and its late night friday when i happen to browse this page.

[Christian Garbs]

Thanks for your help!
We've received a complete patch for the GanttDiagram class and included that in v0.0.5. I hope you don't mind :-)