RFR: 8279614: The left line of the TitledBorder is not painted on 150 scale factor [v15]

[Alexey Ivanov]

On Fri, 20 May 2022 12:02:42 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> Right, JPanel isn't laid out without being added to a peered component.
>> 
>> Maybe setting explicit positions to child panels will work, then the test can be headless.
>
>> That looks odd. I mean if you show the frame, how is it disposed ?
> 
> The idea for that is that frame is shown only if `-show` parameter is passed. In this case, it's assumed the user runs the test from the IDE or on command line. So the frame is disposed of when the user closes it.

> > Perhaps you are trying to get layout to happen ? That should be possible but it might be tricky.
>
> Right, JPanel isn't laid out without being added to a peered component.
> 
> Maybe setting explicit positions to child panels will work, then the test can be headless.

Indeed, it works with explicitly set size and positions. Here's [a working sample](https://github.com/alisenchung/jdk/compare/8279614...aivanov-jdk:alisen-8279614-titledBorder). (Add `.diff` or `.patch` to the URL to get the changeset to apply.)

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PR: https://git.openjdk.java.net/jdk/pull/7449