How to word wrap a QTreeWidgetItem

Question

I have to populate a QTreeWidget with items (or children of items) that may happen to be too long to fit in a single line, so I'm looking for a way to word wrap them.

I thought

myQTreeWidget.setWordWrap(True)

(done via QtDesigner4) would have done the job, but that doesn't seem to be the case.

I don't know if it is relevant, but the tree is enveloped in a splitter frame, so the wrapping should be somehow dynamic to allow resizing of the splitter.

Any ideas? I use PyQt4, but hints in any language/binding would be appreciated.

Smashing

Answer 1

I successfully found a workaround: i envelope a QLabel in the WidgetItem, setting the QLabel to have word wrap capabilities.

item = QTreeWidgetItem()
label = QLabel('long text here')
label.setWordWrap(True)

MyTree.addTopLevelItem(item)
MyTree.setItemWidget(item, 0, label)

the behaviour is exactly the one desired!!

Smashing

Cool solution, thanks for sharing. Also, you might want to change "clinicalBox" to "label" in your answer. – Amative

hehe, sorry! That's what happens with naive copy&paste :) – Smashing

I'm having a problem with spacing on the QLabel: #21007772 – Bourassa

You can also implement a custom delegate to do this: #34623536 – Epicurean

Note that this worked for me, BUT I was getting a crash. According to this question, you need to either set a label for the parent or keep a reference to it: #27644804 . I opted for the keep-a-reference version: self.label = QLabel('Long text here'). (I am using PySide version 1.2.0) – Garbage

Answer 2

setWordWrap just causing wrapping around word-boundaries... it will NOT force anything on to a new line.

What you are looking for is not possible with the default QTreeWidget. I suggest displaying text that is too long in an alternative way, such as mouse-over text or a separate label. TreeViews should not contain more then one line of text per item.

Christan

but if i do item = QTreeWidgetItem(['some text \n and some more']) it is displayed exactly as one would expect: an item on two lines. – Smashing

Real (dynamic) word-wrapping is not possible though. The only thing you might do to simulate word-wrap is write your own word-wrap function that adds newlines to the item stings based on the width of the widget, and then create a signal to call that function when the size of the widget changes. – Christan

I'm trying to envelope a QLabel or a QText-something within an item, so that then i inherit the word wrapping capabilities form the text box, whatever the one it happens to do the right job – Smashing

@Smashing it returns the same result prnt.sc/11x0f6f You can see that all other rows uses 2 charecters too – Handbook