RFR: 8226990: GTK & Nimbus LAF: Tabbed pane's background color is not expected one when change the opaque checkbox. [v11]

[Abhishek Kumar]

On Thu, 2 May 2024 06:05:08 GMT, Abhishek Kumar <abhiscxk at openjdk.org> wrote:

>> JTabbedPane's content area, tab area and tab background color are not as expected when opaque is set to true or false. 
>> The proposed fix is to handle the TabbedPane's background color in installed LAFs. Manual test is added to support the fix and there is no regression caused by the fix. 
>> 
>> Proposed fix is tested in Ubuntu 22.04 and Oracle linux.
>> 
>> CI link is posted in JBS.
>
> Abhishek Kumar has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Instruction and jtreg tag update

@prsadhuk Updated the test instruction as per review comments and update jtreg to execute the test only for windows and linux.

Tested in mac machine where the issue is not resolved even the wrap tab layout also didn't work in Aqua LAF. 

Would like to raise a separate bug to address Aqua issue.

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PR Comment: https://git.openjdk.org/jdk/pull/17720#issuecomment-2089654087