Bug 1379

Summary: NewtCanvasAWT in JSplitPane on macOS
Product: [JogAmp] Jogl Reporter: Bogdan Nicula <bogdan>
Component: macosxAssignee: Sven Gothel <sgothel>
Status: CONFIRMED ---    
Severity: normal    
Priority: P4    
Version: tbd   
Hardware: All   
OS: macosx   
Type: DEFECT SCM Refs:
Workaround: ---
Attachments: Test program showing the problem.
Screenshot showing the difference between macOS and Linux.

Description Bogdan Nicula 2019-04-25 10:11:35 CEST 
Created attachment 813 [details]
Test program showing the problem.

If the canvas is the top component, it is not well resized when moving the divider of a vertically split JSplitPane. A similar situation occurs when the canvas is the right component in a horizontally split JSplitPane.

This appears only on macOS, Java versions 8-13.

First reported at http://forum.jogamp.org/NewtCanvasAWT-in-JSplitPane-on-macOS-td4039717.html

Attached a small program to reproduce the behavior.
Comment 1 Bogdan Nicula 2019-04-25 10:13:28 CEST 
Created attachment 814 [details]
Screenshot showing the difference between macOS and Linux.
Comment 2 Bogdan Nicula 2019-04-25 10:18:52 CEST 
So, my investigation led me to believe the culprit is the code dealing with `superlayer` in fixCALayerLayout() of OSXmisc.m (in jogl/src/nativewindow/native/macosx). Commenting the whole block fixed the symptom.

That code was introduced by 9a8f9b9f7e6148b60b6f0f4326df8d213774284c in response to bug 816. My suspicion is that there is something wrong with the calculation of the origin of those frames.
Comment 3 Sven Gothel 2019-08-20 20:10:24 CEST 
(In reply to Bogdan Nicula from comment #2)
> So, my investigation led me to believe the culprit is the code dealing with
> `superlayer` in fixCALayerLayout() of OSXmisc.m (in
> jogl/src/nativewindow/native/macosx). Commenting the whole block fixed the
> symptom.
> 
> That code was introduced by 9a8f9b9f7e6148b60b6f0f4326df8d213774284c in
> response to bug 816. My suspicion is that there is something wrong with the
> calculation of the origin of those frames.

Thank you for your detailed report, hence confirmed.

I need to see whether I find time to check this for 2.4.0.
In case you have a regression free patch, please post.