CODEWITHSUNDEEP
qtqt5
TheMagician
TheMagician

Reputation: 1856

QListView won't adjust row height correctly when using custom delegates with different heights

I have two custom delegates that implement the sizeHint member function like this:

QSize MovieListPosterDelegate::sizeHint(const QStyleOptionViewItem &option,
                                        const QModelIndex &) const
{
    return {option.rect.width(), 80};
}

QSize MovieListTextDelegate::sizeHint(const QStyleOptionViewItem &option,
                                      const QModelIndex &) const
{
    return {option.rect.width(), 40};
}

If I set the text delegate first, the row height is 40px. If I set the poster delegate first, the row height is 80px. But if, after setting one, I try to change it to another, the row height won't change, e.g.:

First let's set the poster delegate, everything works:

enter image description here

Let's then change it to the text delegate:

enter image description here

As you can see there's 40px of extra space that won't go away. And if I try to do it the other way (from text to poster delegate) then it's a mess. I need the view to adjust the row height correctly. How? Thanks.

Upvotes: 0

Views: 961

Answers (1)

Tomas
Tomas

Reputation: 2210

Use the QAbstractItemView::reset() method to reset the internal state of the view after changing delegate.

Upvotes: 1

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