Re: MathCanvas JInternalFrame
- To: mathgroup at smc.vnet.net
- Subject: [mg36261] Re: [mg36249] MathCanvas JInternalFrame
- From: Werner Schuster <schuster at deltasoft.at>
- Date: Thu, 29 Aug 2002 01:37:43 -0400 (EDT)
- References: <200208280816.EAA18605@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Gary Stump wrote:
> I am writing a Java application that displays Mathematica output using
> MathCanvas. I am having difficulty in that the internal frames
> (JInternalFrame)in my application are covered by the MathCanvas when
> the internal frames are moved into the MathCanvas area. I tried
> setting the frame's layer to 0, but that didn't work. Can anyone help
> me out?
I suppose the problem is, that MathCanvas is an AWT Component, which
causes problem with the other Swing JComponents;
2 possible solutions:
- get J/Link 2.0, which comes with a Swing version of MathCanvas
(MathGraphicsJPanel if memory serves);
- if you can't do that, write a Swing replacement for MathCanvas
using Swing; this is pretty simple: you can use the evaluateToImage
methods, which return a byte array containg a GIF Image; if you want
to make it very simple, you just make your control a JPanel that
contains a JLabel, and when you want to set a M_-GraphicsExpression
(from a Plot,...) you just set the GIF Image as the JLabels Icon;
something like this (jlPlot being the JLabel):
KernelLink kl = StdLink.getLink();
StdLink.requestTransaction();^M
byte [] bGifData = kl.evaluateToImage(sExpression, width,height);
if (bGifData == null || bGifData.length <= 1){
System.out.println("bGifData empty");
}
Image iPlot = Toolkit.getDefaultToolkit().createImage(bGifData);
iiPlot.setImage(iPlot);
jlPlot.setIcon(iiPlot);
jlPlot.repaint();
murphee
- References:
- MathCanvas JInternalFrame
- From: gms158@psu.edu (Gary Stump)
- MathCanvas JInternalFrame