RFR: 8348760: RadioButton is not shown if JRadioButtonMenuItem is rendered with ImageIcon in WindowsLookAndFeel [v30]

[Prasanta Sadhukhan]

On Mon, 30 Jun 2025 13:21:24 GMT, Alexey Ivanov <aivanov at openjdk.org> wrote:

>> As I said, I didn't look deeply into the details.
>> 
>> The menu layout already implements a 5-column layout — this is what I expect because both Metal and Nimbus look exactly like a 5-column layout. Yet Windows L&F is still off, and the margins and offsets don't match what one sees in File Explorer in Windows 11.
>
> After your latest fix, the accelerator doesn't get painted over the menu text, but the positioning is still way off.
> 
> With the added column for the icon the menu width has to increase but it hasn't. Instead, the width remains the same, and you squeeze both check mark / bullet and icon to the same allocated space.
> 
> The position of the check mark must not change in the new layout. In old rendering code, the was 29-pixel margin between the left edge and first pixel of the check mark (at 200% scale), but now it's reduced to 23 pixels only.
> 
> There was 24-pixel margin between an icon and text, but now it's only 6 pixels.
> 
> The margin between menu text and accelerator is reduced from 12 pixels to 4.
> 
> The menu looks too crowded, squished. You have to properly add *a new column for the icon* with margins around it whenever a popup menu has a JCheckBoxMenuItem or JRadioButtonMenuItem with an icon.

I guess the positioning with latest PR today should be ok

![image](https://github.com/user-attachments/assets/f54247e8-6cbc-4b63-972f-90a155d5bbc1)

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PR Review Comment: https://git.openjdk.org/jdk/pull/23324#discussion_r2184224118