Thanks Thomas for the tip. I think I have made an appropriate correction. I was calling invokeLater on a method that adds a character to the output for anything that wasn't a newline. For newlines I would call invokeAndWait when I was displaying the output in the window. It seems that using different calls was producing the wobble; an effect that wasn't evident when I was running my program over a slower machine.
So, I call invokeAnWait for both cases, and although the mechanism works slower by a factor of about 100 (cf. the attached - ~4ms versus ~40ns), the wobble appears to have gone. On Fri, 8 Mar 2024 at 00:36, Thomas Wolf <tjw...@gmail.com> wrote: > You’re making all the Swing calls in the EDT (vs directly in the threads > you mentioned), right? > > Tom > > On Mar 7, 2024, at 6:40 AM, Owen Thomas <owen.paul.tho...@gmail.com> > wrote: > > > The numbers running down the left are milliseconds, all others are nanos. > As you can see, all this happens within the same millisecond, and perhaps > I'm thinking that Swing wasn't built with rendering output at this rate in > mind. > > Anyway, I'd love to know what people have to say. :) > > On Thu, 7 Mar 2024 at 22:04, Owen Thomas <owen.paul.tho...@gmail.com> > wrote: > >> Hello Netbeans people. This is not a question for Netbeans itself, but I >> know there are a lot of clever people here who may be able to give me a >> pointer or two, so please look away if this question might offend. I hope >> it doesn't. :) >> >> My program uses Swing. It outputs text to a window. The output is >> attached. At a particular point (the line is highlighted in the attached >> screenshot) the output begins to wobble; that is, the line spacing becomes >> uneven and (perhaps) even characters appear to be squashed. >> >> Now, I thought this might be something to do with how quickly the output >> is produced (it is produced very quickly - those numbers are time >> measurements in nanoseconds) and how competing threads might cause the >> Swing GUI innards to lose their grip somehow, but when I tried wrapping >> some of my code within synchronised blocks, I didn't see any improvement. >> >> Surely I think to myself things like this have been done before. Does >> anyone know how I might be able to stop this wobbling? >> >> Thanks, >> >> Owen. >> >>
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