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Re: Drawing problem

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  To: comp.lang.java.gui
Knute Johnson wrote:
> Michael Rauscher wrote:
>> private void calculateAndPaint() {
>>     for ( int x = 0; x < 200; ++x ) {
>>         final int i = x;
>>         SwingUtilities.invokeLater( new Runnable() {
>>             public void run() {
>>                 Graphics g = img.createGraphics();
>>                 g.drawLine( i, i, i-1, i-1 );
>>                 g.dispose();
>>                 repaint();
>>             }
>>         });
>>         try { Thread.sleep(10); } catch ( InterruptedException e ) {}
>>     }
>> }
>>
> 
> There is no requirement that repaint() or graphics calls be made on the 
> EDT.

With respect to repaint: you're right, of course.

Do you mean that it's safe to manipulate an image in a non-EDT thread 
while the EDT might draw it?

I was unsure about this, perhaps you can provide some links with 
detailed informations on this subject.

> I wouldn't use paint() as the name of the method because you might 
> interfere with normal painting.

ACK. Call it draw() then.

Bye
Michael

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Drawing problem "Robert Sturzenegger" <robert.sturzenegger@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
  Re: Drawing problem "Andrew Thompson" <andrew.thompson@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
    Re: Drawing problem "Robert Sturzenegger" <robert.sturzenegger@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
  Re: Drawing problem "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
    Re: Drawing problem "Robert Sturzenegger" <robert.sturzenegger@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
      Re: Drawing problem "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
        Re: Drawing problem "Knute Johnson" <knute.johnson@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
          Re: Drawing problem "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
            Re: Drawing problem "Knute Johnson" <knute.johnson@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
              Re: Drawing problem "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
                Re: Drawing problem "Knute Johnson" <knute.johnson@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
                Re: Drawing problem "Michael Rauscher" <michael.rauscher@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000
        Re: Drawing problem "Robert Sturzenegger" <robert.sturzenegger@THRWHITE.remove-dii-this> - 2011-04-27 15:31 +0000

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