Setting CSS Padding Overrides BackgroundRole

Qt_User72653

I'm not sure if it's actually being overridden or if it's just defaulting to white, but, I have a model that returns a specific background role for certain items, but when setting the left padding of the table items using:

QTableView::item {
    padding-left: 20px;
}

The color I set using the BackgroundRole becomes white.

Do I have to implement a custom delegate just to add padding?

mrjj

@Qt_User72653
But is it not because you add padding and that is not part of
the area painted with background (content) ?
Just wondering. Not sure what constitutes "background" for an item.

alt text

Qt_User72653

I made an error in the CSS I used; I need to set a border for the padding to work:

QTableView:item {
    border: none;
    padding-left: 20px;
}

I also tried just setting the left border, thinking that I might be able to use that to simulate padding, but it completely removes the background color, too, using:

QTableView::item {
  border-left: 10px solid transparent;
}

@mrjj said in Setting CSS Padding Overrides BackgroundRole:

@Qt_User72653
But is it not because you add padding and that is not part of
the area painted with background (content) ?
Just wondering. Not sure what constitutes "background" for an item.)

I could understand if the background was only blank where the padding would be, but when setting the padding through CSS it completely removes the background color.

mrjj

If wondering if you are seeing the viewport().
When you say completely remove background , it means all for the
the area or just the pad part ?

Anyway, i just realized that setting Stylesheet on widgets, disables the normal drawing.
Im wondering if that also applies to BackgroundRole handling for *views.

Qt_User72653

Yeah, it completely removes the item background.

Is there a simpler way to do this, or do I have to implement a custom delegate?

qwasder85

We stumbled over this recently, seems to be a bug. No matter what kind of property you set for an item in the CSS, the background role becomes useless.

Christian Ehrlicher

See https://bugreports.qt.io/browse/QTBUG-75191 and my comment there.