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jscrollpane extra smooth how did they do that?

How did these guys get their JScrollpane to be so smooth?  Did they use a JList?  Is that a custom drawing?  Any sample code that could do something similar?

http://www.chat-avenue.com/adultchat.html

Thanks.

kes.
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kesea
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kesea
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1 Solution
 
objectsCommented:
You can control the viewport position.
What problems are you having getting smooth scrolling.
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objectsCommented:
i believe thats an AWT applet, but you should be able to achieve the same using Swing.
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JavatmCommented:
Hi Friend;

Here is how you use viewport w/ scrollpane :
http://java.sun.com/docs/books/tutorial/uiswing/components/scrollpane.html

Hope that helps . . .
Javatm
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girionisCommented:
Check the applet, it should be somewhere in your browser's cache. Then decompile it and you have the source code. A decompiler: http://aolca.com.com/3000-2417-10046809.html (hope it is not obfuscated).
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keseaAuthor Commented:
Well a little more info for you.  I am trying to implement the same thing, but what I have done is put a JEditPane in HTML mode in a scroll bar.  Then I add more and more to this JEditPane.  The problem is I am having trouble controlling the scrolling nicely and I am getting a flickering.  

How do you think that website that I gave you does it?  Is that a Scrollable JEditpane with HTML?  JList?  

Is there a way to control the JScrollPane so that it doesn't automatically update the screen and then add the new info to a JEditPane and then scroll it?  Plus I am having a heck of a time with the autoscrolling if you want to zip back up to look at messages while adding new information, it keeps scrolling to the bottom and then it jumps back to where I am dragging the cursor.  Thanks experts.
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JavatmCommented:
> Is there a way to control the JScrollPane so that it doesn't automatically update the screen and then add the new info to a JEditPane and then scroll it?

Use viewport as you add more text or components to it.
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objectsCommented:
> The problem is I am having trouble controlling the scrolling nicely and I am getting a flickering

Didn't we determine the flickering was caused by the editor pane, and not actually related to the scroll pane?

> Is that a Scrollable JEditpane with HTML?  JList?  

Pretty sure, its AWT.
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keseaAuthor Commented:
Yes we did determine the flickering was the JEditorPane.  Objects do you know if it is possible to add an HTML object to a JList?  That would probably solve my problem.  Thanks.
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objectsCommented:
> Objects do you know if it is possible to add an HTML object to a JList?  

yes you should be able to add html to a JList.
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objectsCommented:
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