[Qt-qml] Adjusting Flickable contentHeight to variable children ListViews

[jens.bache-wiig at nokia.com]

> Explicit height is not viable for the third ListView because item count 
> will vary. There would be excess space below items which is not nice. 
> Maybe I can hack out a function that will calculate the new height 
> whenever the item count changes. "item_count * delegate_height" or 
> something.

You should not have to. Did you try to just explicitly set the height of the last ListView to it's own contentHeight?
The ChildrenRect of your Flickable should then automatically stay in sync.

Jens


> 
> 11.10.2011 12:05, jens.bache-wiig at nokia.com kirjoitti:
>> Unless you put those ListViews in a Column (or anchor them) and explicitly set their height (bind each view's height to its own contentHeight), the childrenRect will not make sense. They are all stacked on top of each other right now. Also, I suspect you should set the interactive flag to false on the ListViews so they don't interfere with top-level Flickable. For the fixed height views, you could alternatively have used repeaters instead of ListViews.
>> 
>> Regards,
>> 
>> Jens
>> 
>> 
>> On Oct 11, 2011, at 10:22 AM, ext Matti Mäki wrote:
>> 
>>> Hi,
>>> 
>>> Flickable {
>>> 
>>>     contentHeight: //..?
>>> 
>>>     ListView {
>>>         visible: // always
>>>         contentHeight: // fixed
>>>     }
>>>     ListView {
>>>         visible: // always
>>>         contentHeight: // fixed
>>>     }
>>>     ListView {
>>>         visible: // sometimes
>>>         contentHeight: // variable
>>>     }
>>> }
>>> 
>>> How should I define the Flickable contentHeight so it will adjust
>>> correctly to the changing children? Binding to childrenRect.height does
>>> not seem to do the job. The two upper ListView's are always visible and
>>> have fixed heights but the third is shown only when user expands it, and
>>> it might have any number of elements from 1 to 20 or something.
>>> 
>>> /matti
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