Re: [gef-dev] FigureCanvas and Viewport

[Randy Hudson <hudsonr@xxxxxxxxxx>]

This is a newsgroup question.

FigureCanvas already has a Viewport
internally.  You just need to give it a Figure for its contents.

"Joel G Rivera-Gonzalez" <el_pio@xxxxxxxxx> Sent by: gef-dev-admin@xxxxxxxxxxx 11/07/2002 06:15 PM Please respond to gef-dev

To:        <gef-dev@xxxxxxxxxxx>         cc:                 Subject:        [gef-dev] FigureCanvas and Viewport

Hello to all
 
All right here is the deal…
I need to do an application using draw2d.
 Everything is going smoothly until I tried to implement scrollbar
functionality on the application.  I am trying to use FigureCanvas
(canvas) and Viewport (viewport).  The viewport contains n number
of images.  Those images can be move around the canvas, so I need
to expand and shrink it as needed…The scroll area (the canvas) should
be the size of the shell and the viewport should be as big as needed…the
problem is I thought that if the viewport is bigger than the canvas it
should allow you to scroll around…but this is not happening…any one have
a suggestion?
 
Here is more-or-less what I’m doing….
 
      FigureCanvas canvas
= new
FigureCanvas(shell);
Viewport vp = new
Viewport();
      ...
      vp.setSize(1000, 1000);
...
canvas.setSize(500,  500);
      canvas.setScrollBarVisibility(FigureCanvas.ALWAYS);
      ...
canvas.setContents(vp);
      ...   
      shell.open();
      shell.pack();
 
 
Thanks…

Best Regards,
Joel
--------------------------------------
Joel G Rivera-Gonzalez
IBM TJ Watson Research Center
19 Skyline Dr
Hawthorne, NY 10532-2119