Qt4.4 QListView paragraph

Hey there,

I'm using a QListView to display a list of QTextDocument based paragraphs.

Everytime I resize my view I have to call : QAbstractListModel::reset(), to update the paragraph's geometry.

here is my paint delegate content :

Code:

---

painter->save();
 
	QTextDocument document;
	document.setHtml(mText);
	document.setPageSize(QSize(rect.width(), rect.height()));
 
	QAbstractTextDocumentLayout::PaintContext context;
	painter->translate(rect.x(), rect.y());
	document.documentLayout()->draw(painter, context);
 
	painter->restore();

---

When resizing my widgets : the view goes blank, until resize is completed.
Is there a way to avoid this ?

Code:

---

// Resizing mode
setResizeMode(QListView::Adjust);

---

This solved the problem for the blank flickering.

Now I have another problem :
- I have my QListView inside a QSplitter.
- When I do have 2 paragraph items or so in my view, the display is fine.
- When I do have 10 or so paragraph items the display is laggy when I drag the splitter left or right.
- When resizing the window itself : no problem.

Has anyone experienced that ?

Using my listView I get white flickering.

This happens when I do subsequent reset() operation. Is there a way to avoid QListView blank paiting flickers ?

Yes, don't call reset :) It's very computation intensive. Try using some other approach. The recent versions of the delegate can signal the view that the size hint of an item might have changed.