Gradient paint or image as a background in JPanel.

[Aaron Fude]

How to do it?

I found a few ways to do it on the web, but there's gotta be one de-
facto-standard way of doing it. What would that be?

Thanks,

Aaron

 

[Andrew Thompson]

How to do it?

I found a few ways to do it on the web,

Why? It is not exactly common that a program needs a
gradient or image BG to a panel.

...but there's gotta be one de-
facto-standard way of doing it. What would that be?

Why not use one of the techniques you found, and thereby
make it (by force of numbers) one step closer to being a
'de-facto standard'?

 

[Aaron Fude]

Why?  It is not exactly common that a program needs a
gradient or image BG to a panel.


Why not use one of the techniques you found, and thereby
make it (by force of numbers) one step closer to being a
'de-facto standard'?

All of those techniques seemed ad-hoc. I would like to learn the right
place to put the code? Is it "paint" or "paintComponent", or?

 

[Mayeul]

Aaron Fude a écrit :

All of those techniques seemed ad-hoc. I would like to learn the right
place to put the code? Is it "paint" or "paintComponent", or?

I think the javadoc is rather clear that a JComponent's background
should be drawn in its paintComponent() method and that paint() should
be left alone for this.

It probably should be drawn first thing too, not touch the border insets
if there are some, and honor isOpaque() (that is to say, do fill the
background with opaque paint if isOpaque() is true.)

As for how to actually draw the thing, it seems you already found
working examples.