On 19/01/16 19:50, Sergey Bylokhov 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.
But it can be regression of JDK-8033000, I will double check.
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.
