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  Java applets flicker in browser, is it just me?!  (Read 1817 times)
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Offline rackham

Junior Devvie





« Posted 2009-07-16 16:18:04 »

Hello everyone!

Ive noticed with applets i have written, or applets on other people sites, that they flicker when scrolling up or down the page. Does everyone else experience this or is it just me / my set up? Does anyone know a fix for this? I imagine it's because everytime the page is scrolled (so the viewport changes) that a repaint() or refresh call or some equivilent is performed upon any containing applets to be able to keep the view up to date, and if a anim loop is running this could take a normally 60fps app to a much higher amount which it cannot cope with. Would i be completly wrong in assuming this?

For an example have a look at the alcamy game from popcap which is one of the few they have on the site which is java based http://www.popcap.com/games/free/alchemy?mid=alchemy_pcweb_en_full

any insights on this would be great!

Offline elias4444

Junior Devvie





« Reply #1 - Posted 2009-07-16 16:20:42 »

I've noticed the same thing. I'm guessing it has to do with the way the browser interacts with Java (and vice versa). If anyone knows a solution, I'm all ears as well!

Offline steveyO
« Reply #2 - Posted 2009-07-16 17:11:11 »

I dont know why either but have noticed this too.  Have noticed it happens in Java2D and Pulpcore applets (Edit: using Firefox) but it doesnt in GTGE applets.  Dont know why tbh.  Dont really see it as a problem though as the user normally would only scroll once till applet is centered in browser.  Am sure someone on here will know!!

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Offline rackham

Junior Devvie





« Reply #3 - Posted 2009-07-16 17:44:58 »

i feel a bit stupid now, and this has happened in the past, becuase i moan about this issue and check out some applets using firefox (which is what i usually use and therefore where i notice this proplem) and also safari, and they are all completly fine, no flickering whatsoever. I think it happens about 90% of the time, but occasionally, magically, they are fine and dont look like a cheap piece of rubbish. What is this, could is just be how much load my own comp is under?? Huh

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