JCheckBox opaque = false ignored

[coreequip]

Hi JFormDesigner-Team (hallo Karl),

first thanks for the great FlatLaf - its awesome!

I just switched from Darcula to FlatLaf and now I had to realize that there is a problem with the "opaque-ness" of the JCheckBox component. In my case I use a JScrollPane with a custom JViewport to draw a background image behind the list elements. As a ListCellRenderer I use JCheckBoxes with opaque = false. It worked well with all other LAFs but FlatLaf shows a solid (opaque) background color. The expected behavior is a transparent background of the JCheckBox' text label.

class TrackListCellRenderer implements ListCellRenderer<TrackListBean> {

    private JCheckBox checkBox
    TrackListCellRenderer() {
        checkBox = new JCheckBox()
    }

    @Override
    Component getListCellRendererComponent(JList<? extends TrackListBean> list, TrackListBean value,
                                           int index, boolean isSelected, boolean cellHasFocus) {

        // make sure to have it opaque when selected
        checkBox.opaque = isSelected

        // ...
}

(this is groovy code)

Thanks a lot.

[Chrriis]

In dark mode, I noticed a table where one column does not respect the background color: it actually has a checkbox renderer. I would need to investigate when time allows, but it might well be linked to this issue.

[Chrriis]

Using this one-class test case (warning, nasty look and feel stuff to paint cell background):
TableTest.zip

We get on Windows:

and with FlatLaf:

[DevCharly]

Sorry for the late response. This should be fixed in master branch now. Hope it works 😉

[Chrriis]

Works fine! Thanks!