> Did you create a bug at bugreport.java.com? I can go ahead and file one!
> Not sure but personally I like the possibility to scroll diagonally w/o >zig-zaging when two scrolls are visible. I don't have strong opinions on this one. Presumably Apple decided that the use case of exact horizontal/vertical scrolling would get priority over smooth diagonal scrolling. It could also have ergonomic reasons, as it allows exact vertical scrolling without the user curling their fingers even when their hands are on the side of the trackpad, as they are when aligned with a MacBook keyboard. In any case it's a separate issue from the jitter bug, of course. -- Eirik On 1/20/16, 9:13 PM, "Sergey Bylokhov" <sergey.bylok...@oracle.com> wrote: >Hi, Eirik. >Did you create a bug at bugreport.java.com? > >On 20/01/16 00:51, Eirik Bakke wrote: >> >> The "left-to-right is scroll up" feature is not how native apps work on >> MacOS, so my guess would be it could simply be disabled on MacOS. > >I will take a look what we can do here. The problem only occurs if the >second(horisontal) scrollbar is invisible. > >> >> Note also that when scrolling with the trackpad in native MacOS apps, >> the OS makes a decision as to whether the scroll is vertical or >> horizontal, and then scrolls in that direction only. The cut-off is 45 >> degrees, giving the user plenty of wiggle room. You can never scroll >> truly diagonally except by zig-zaging. > >Not sure but personally I like the possibility to scroll diagonally w/o >zig-zaging when two scrolls are visible. > >> >> -- Eirik >> >> On 1/19/16, 11:50 AM, "Sergey Bylokhov" <sergey.bylok...@oracle.com >> <mailto:sergey.bylok...@oracle.com>> wrote: >> >> I am not sure that this is regression or a bug. In your case you >>scroll >> from left-down to right-up. >> But left-to-right is a scroll to up, and down-to-up is a scroll to >> down. >> So you scroll in both direction at the same time. >> >> On 19/01/16 19:18, Eirik Bakke wrote: >> >> Hi, macos-port-dev. >> >> Here's another bug report for Swing on Aqua/MacOS. In recent >>Java >> versions (6-12 months, not sure), trackpad scrolling in any >> JScrollPane >> has become extremely jittery, as demonstrated in the following >> video: >> >> https://vimeo.com/151843642 >> >> The source code for the example app used can be found here: >> https://gist.github.com/eirikbakke/09a090ab8052d38c8c87 >> Note that the "implements Scrollable" business is not necessary >>to >> trigger the bug, I just did it to set the >> getScrollableBlockIncrement to >> something higher than 1 so that you'd see the jitter clearly on >> a video. >> >> This happens in any app that uses a JScrollPane, including the >> NetBeans >> IDE's code editor and other scrollable panels, as well as in >> trivial >> apps like the linked example. The bug occurs consistently, with >>or >> without external monitors attached, at any resolution, and with >>or >> without simulated retina mode enabled. I'm on a 13-inch mid-2012 >> MacBook >> Air. >> >> If no one knows about an existing bug report about this, I'll >> submit it >> on http://bugreport.java.com<http://bugreport.java.com/> (I >> searched >> bugs.openjdk.java.net ). >> >> -- Eirik >> >> >> >> -- >> Best regards, Sergey. >> > > >-- >Best regards, Sergey.
