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Popup similar to Tooltip

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  Popup similar to Tooltip "RC" <rc@THRWHITE.remove-dii-this> - 2011-04-27 15:43 +0000
    Re: Popup similar to Tool "Eric Sosman" <eric.sosman@THRWHITE.remove-dii-this> - 2011-04-27 15:43 +0000
      Re: Popup similar to Tool "Daniel Pitts" <daniel.pitts@THRWHITE.remove-dii-this> - 2011-04-27 15:43 +0000
        Re: Popup similar to Tool "RC" <rc@THRWHITE.remove-dii-this> - 2011-04-27 15:43 +0000
    Re: Popup similar to Tool "Roedy Green" <roedy.green@THRWHITE.remove-dii-this> - 2011-04-27 15:43 +0000

#3209 — Popup similar to Tooltip

  To: comp.lang.java.programmer

I want a simple popup for few seconds

Popup popup = new Popup(null, new JLabel("Done"), 10, 10);
popup.show();

try {
    Thread.sleep(2000);
} catch (InterruptedException ie) {
}
popup.hide();

Everything is OK except I don't see the word "Done" in the label.
If I comment out the lines for try, Thread.sleep(###) and catch
Then I can see the word "Done in the label, then I can't make the popup
for few seconds.

Anyone knows why the word "Done" won't show up if I use Thread.sleep?
Any idea how do I fix the problem?

I don't need JProgressBar nor JMonitor for  my simple application.
I want similar to the Tooltip popup for few seconds, but without
move the mouse pointer to a particular JComponent.

Thank you in advance!

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#3210 — Re: Popup similar to Tool

  To: comp.lang.java.programmer
RC wrote:
> 
> I want a simple popup for few seconds
> 
> Popup popup = new Popup(null, new JLabel("Done"), 10, 10);
> popup.show();
> 
> try {
>    Thread.sleep(2000);
> } catch (InterruptedException ie) {
> }
> popup.hide();
> 
> Everything is OK except I don't see the word "Done" in the label.
> If I comment out the lines for try, Thread.sleep(###) and catch
> Then I can see the word "Done in the label, then I can't make the popup
> for few seconds.
> 
> Anyone knows why the word "Done" won't show up if I use Thread.sleep?

     You're probably doing the whole thing on the event
dispatching thread, which means the entire GUI stalls
while you're in sleep().  Presumably, it stalls just a
moment or two before the text would have become visible,
and when sleep() returns you tear down the popup before
the text has a chance to finish painting.

 > Any idea how do I fix the problem?

     Do your sleeping on a separate thread, letting the
EDT run without interruption.  In your separate thread,
use SwingUtilities.invokeLater() to do things to the GUI.

-- 
Eric.Sosman@sun.com

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#3212 — Re: Popup similar to Tool

  To: comp.lang.java.programmer
Eric Sosman wrote:
> RC wrote:
>>
>> I want a simple popup for few seconds
>>
>> Popup popup = new Popup(null, new JLabel("Done"), 10, 10);
>> popup.show();
>>
>> try {
>>    Thread.sleep(2000);
>> } catch (InterruptedException ie) {
>> }
>> popup.hide();
>>
>> Everything is OK except I don't see the word "Done" in the label.
>> If I comment out the lines for try, Thread.sleep(###) and catch
>> Then I can see the word "Done in the label, then I can't make the popup
>> for few seconds.
>>
>> Anyone knows why the word "Done" won't show up if I use Thread.sleep?
> 
>     You're probably doing the whole thing on the event
> dispatching thread, which means the entire GUI stalls
> while you're in sleep().  Presumably, it stalls just a
> moment or two before the text would have become visible,
> and when sleep() returns you tear down the popup before
> the text has a chance to finish painting.
> 
>  > Any idea how do I fix the problem?
> 
>     Do your sleeping on a separate thread, letting the
> EDT run without interruption.  In your separate thread,
> use SwingUtilities.invokeLater() to do things to the GUI.
> 

Actually, I suggest using a Timer task instead of Thread.sleep in any case.


-- 
Daniel Pitts' Tech Blog: <http://virtualinfinity.net/wordpress/>

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#3213 — Re: Popup similar to Tool

  To: comp.lang.java.programmer
Daniel Pitts wrote:

> Actually, I suggest using a Timer task instead of Thread.sleep in any case.

Two thumbs up!

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#3223 — Re: Popup similar to Tool

  To: comp.lang.java.programmer
On Mon, 25 Feb 2008 15:50:49 -0500, RC <raymond.chui@nospam.noaa.gov>
wrote, quoted or indirectly quoted someone who said :

>try {
>    Thread.sleep(2000);
>} catch (InterruptedException ie) {
>}
>popup.hide();

your problem is you made the Swing thread sleep, so it can't do any
painting work, i.e. serving the event queue.

See http://mindprod.com/jgloss/timer.html
http://mindprod.com/jgloss/sleep.html
--

Roedy Green Canadian Mind Products
The Java Glossary
http://mindprod.com

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