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| From | Knute Johnson <nospam@rabbitbrush.frazmtn.com> |
| Newsgroups | comp.lang.java.programmer |
| Subject | Re: JScrollPane not scrolling smoothly on fast computer |
| Date | Tue, 12 May 2015 19:56:47 -0700 |
| Organization | A noiseless patient Spider |
| Lines | 50 |
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On 5/11/2015 12:59, e.d.programmer@gmail.com wrote: > On Saturday, May 9, 2015 at 2:29:14 PM UTC-4, Knute Johnson wrote: >> I've got some software running at a client's place for almost 10 >> years. It was running under Windows XP and I think must have been >> originally compiled with Java 5 and then later Java 6. The program >> had been running fine for years but the hardware is starting to >> give out. At one site we upgraded to a modern desktop with Windows >> 7. We started noticing some issues with JScrollPanes with lots of >> JComponents in them not scrolling smoothly. The new computers were >> considerably more powerful than their predecessors but the >> performance sucked. We were forced to use Java 7 or new so we used >> 8 but were still not happy with performance but couldn't figure out >> what to do about it. >> >> Just this week we are preparing a new desktop to run some new >> software and the old software as some systems are being combined >> and upgraded. The old software that was running under XP on an >> older desktop now started having the scrolling issues on the new >> computer. The new computer is 4 core, lots of memory, much faster >> processor and running Windows 8. This was driving everybody crazy >> so I started looking around to see if I could find something that >> would fix it. >> >> In the end, it turns out that Java 8 running on Windows 8 on this >> computer was not using the OpenGL pipeline for 2D drawing. I >> don't really understand how all that works but manually turning it >> on on the command line fixed our sticky scrolling problem. Just >> add -Dsun.java2d.opengl=True to the command line and it's back to >> normal. >> >> If anybody knows anything about how the DirectDraw and OpenGL and >> all this works or can point me to a good article about it on Java 8 >> I would appreciate it greatly. >> >> Hopefully this will help somebody with the same problem avoid all >> the hassle and blame that their software is bad in the future. >> >> -- >> >> Knute Johnson > > As far as I know all my scrollpanes are scrolling smooth. Do you > have sample code that shows a problem? > I've not been able to duplicate it, just fix it. -- Knute Johnson
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JScrollPane not scrolling smoothly on fast computer Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-09 11:29 -0700
Re: JScrollPane not scrolling smoothly on fast computer e.d.programmer@gmail.com - 2015-05-11 12:59 -0700
Re: JScrollPane not scrolling smoothly on fast computer Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-12 19:56 -0700
Re: JScrollPane not scrolling smoothly on fast computer Jim Hicks <james.hicks78@gmail.invalid> - 2015-05-20 15:20 +0000
Re: JScrollPane not scrolling smoothly on fast computer Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2015-05-20 10:45 -0700
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