On Fri, 10 May 2024 17:33:53 GMT, Sergey Bylokhov <s...@openjdk.org> wrote:

>> JTabbedPane's contentOpaque and tabsOpaque properties are not honored in 
>> Aqua L&F. JTabbedPane's content area and tab background color are not as 
>> expected when tabbedpane opacity is set to true or false. Fix is to handle 
>> the opacity behavior correctly and inline with other LAF as well. 
>> 
>> Existing test `TestBackgroundScrollPolicy.java` failed with the proposed fix 
>> and it is updated to run only for linux and windows platform because the 
>> content area for tabbedpane is rendered to the width and height of 
>> tabbedpane starting from (0, 0) position 
>> (https://github.com/openjdk/jdk/blob/cf7c97732320d70de5f5725c920d5c3861a2c9c8/src/java.desktop/macosx/classes/com/apple/laf/AquaTabbedPaneUI.java#L684C16-L684C16)
>>  and that leaves no place for tab area behind tabs.
>> 
>> CI testing is green after this test update and link posted in JBS.
>
> The Aqua L&F mimics the behavior of the native UI on macOS. Is it possible to 
> change all these properties in the native apps?

@mrserb I am going to close this bug as "Not an issue" as I couldn't find any 
ways to check this behavior.

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PR Comment: https://git.openjdk.org/jdk/pull/19170#issuecomment-2149224348

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