Re: JScrollPane jitter during trackpad scrolling on MacOS/Aqua

2016-01-21 Thread Eirik Bakke 
Hi again, Sergey.

I just filed a bug report and got review ID JI-9028846. Thanks for your
help!

-- Eirik

On 1/20/16, 9:13 PM, "Sergey Bylokhov"  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" > > 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 (I
>> searched
>> bugs.openjdk.java.net ).
>>
>> -- Eirik
>>
>>
>>
>> --
>> Best regards, Sergey.
>>
>
>
>-- 
>Best regards, Sergey.

Re: JScrollPane jitter during trackpad scrolling on MacOS/Aqua

2016-01-20 Thread Sergey Bylokhov 

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" > 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 (I
searched
bugs.openjdk.java.net ).

-- Eirik



--
Best regards, Sergey.




--
Best regards, Sergey.

JScrollPane jitter during trackpad scrolling on MacOS/Aqua

2016-01-19 Thread Eirik Bakke 
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 (I searched 
bugs.openjdk.java.net ).

-- Eirik

Re: JScrollPane jitter during trackpad scrolling on MacOS/Aqua

2016-01-19 Thread Sergey Bylokhov 
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 (I searched 
bugs.openjdk.java.net ).

-- Eirik




--
Best regards, Sergey.