Re: Drawing line on ImageIcon on panel after getting data

From:

"Andrew Thompson" <u32984@uwe>

Newsgroups:

comp.lang.java.help

Date:

Fri, 26 Oct 2007 03:13:21 GMT

Message-ID:

<7a3f85f50f631@uwe>

bH wrote:
...

public class IconMapShoScale extends JPanel{

This example might have been an SSCCE except for:
a) line wrap, which had to be fixed before it compiled
b) lack of images locally.

For the first, you might try <http://www.physci.org/twc.jnlp>
This little tool shows the width of the source/text pasted
in the text area. I recommned limiting it to '62 chars' for
usenet posts.

For the second, try obtaining images that are small (in bytes),
but large enough (in width/height) to show the problem,
directly off the net. If you have a site of your own, upload
some examples to use, otherwise the code might get them
off another site.

Here is one image search..
<http://images.google.com.au/images?q=+filetype:jpg&as_st=y&svnum=10&hl=en&sa=G&imgsz=icon

That search locates images that are 'small' in width/height.

As to the technical side of the problem, I suspect it is
non-optimal to create an ImageIcon. I would tend to use
a JPanel, override paintComponent and draw the Image
directly (Graphics.drawImage()). Once the points are
obtained, it is a simple matter to Graphics.drawLine()
(obviously, draw the lines *after* the image itself is drawn).

--
Andrew Thompson
http://www.athompson.info/andrew/

Message posted via http://www.javakb.com

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