2d Graphics problem

2d Graphics problem - Help!

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DBC User - 21 Apr 2006 07:10 GMT

Hi all,

I have 2 frames, one frame has panel, which displays a bar chart. I
have another frame which display the bar chart values in text in
JTextPanel. Bar chart drawing is real time with data coming from
server. So when I get the data pass it to the second frame to display
the text and then draw the graph as well.

When I do only Bar chart everything is fine, but when I start
displaying the second frame to write text message, everything in the
second frame start appearing in my bar chart panel. Does anyone know
why this is happening?

Thanks a lot.

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Vova Reznik - 21 Apr 2006 15:01 GMT

> Hi all,
>
[quoted text clipped - 10 lines]
>
> Thanks a lot.

Do frames share Graphics object?

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DBC User - 21 Apr 2006 17:09 GMT

No, This is the sequence diagram if you will,

mainprogram -> create frame1 -> create panel with 2D graphics object
that get painted everytime it recives message from server.

mainprogram->create frame1->create frame2 ->create a textpanel which
updates the text in this box, everytime, it gets the message from the
server.

when the second part is not running the first one works like a charm
but when you enable the second frame, the first frame paint is painting
the frame 1 panel and underneth it paints frame 2 text box message. any
idea how to seperate them and not to paint over again and again?

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Monique Y. Mudama - 21 Apr 2006 18:03 GMT

> No, This is the sequence diagram if you will,
>
[quoted text clipped - 10 lines]
> message. any idea how to seperate them and not to paint over again
> and again?

This sounds like a problem with forgetting to call super.paint() or
super.paintComponent() in your custom paint code (depending on whether
you're using AWT or Swing).

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monique

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DBC User - 21 Apr 2006 19:35 GMT

Yes I wasn't doing the super.paint, the reason is, I want to retain the
old graph and update only the new data. If I do super.paint I loose all
previously drawn graph. Now that i am thinking about it.

Can I generate a image and update the image and show it in a paint,
will it work?

Thanks for the answers.

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2d Graphics problem - Help!

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