Rendering items on QListView

Hi,

I am starting to develop with Qt so I am sorry if my doubt is too obvious.

I am developing an UI on which there is a list that display "complex" items. I said "complex" because each item has an uncommon design and a lot of information and pictures. I have read about QListView and found I can only easily use Strings item on it. After research a little more I found out that using a QItemDelegate I would have more control on what I will render for each item using paint method.

However I would like to create a composite Widget (with layout, picture and labels) and render it as an item using ItemDelegate::paint (or another method you suggest me).

Any help is appreciated!

Thanks in advance.

Rafael

You cannot paint a widget in QAbstractItemDelegate: paint().
As far as I can see, you have two solutions:

1. Do all the painting in QAbstractItemDelegate: paint().

2. Create your widget, with everything you want in it, and then don't actually use this widget but use QPixmap::grabWidget to get a pixmap of this widget and draw this pixmap in QAbstractItemDelegate: paint(). This way would be simplwer to handle the look of the item ( you said you wanted layouts, labesl, etc )

Regards

I was actually expecting some solution a little more elegant ! :)

I will first try solution #1 since it seems to be faster. If it turns out to be too complex I will go with #2.

Thanks a lot, Marcel.

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I was actually expecting some solution a little more elegant ! :)

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It can't get more elegant than this, trust me!
If you read the docs well before you start you will end-up with a pretty elegant piece of code... Because painting with QPainter is something easy and extremely used in Qt.

Regards

If an item has lots of information, maybe it's better to do it without the model-view architecture? How about using a scrollarea and a layout? The model approach is basicaly intended (but not limited to) simple (mostly non-widget) items.

I am implementing a bank account list that each item displays the bank logo and some information about the account (number, balance, etc). I need to strictly follow a UI specification made by the project designer. I decided to use QListView because I need to be able to select an item on the list. Do you guys think that I could use a scrollarea and put the items on it as widgets dynamically? (this way I think I would have to handle the select feature by myself)

Thanks for the help again!

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Originally Posted by rcintra

Do you guys think that I could use a scrollarea and put the items on it as widgets dynamically?

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I do. At least I'd do it this way if I had a complex widget.

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(this way I think I would have to handle the select feature by myself)

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I don't think adding a checkbox into the layout is that much of a problem ;)