Hi Detlev,

We have of the order 60-70 interface plugins available in our 'tool box' - to be able to order them, group them, filter/search them - and still maintain a compact layout - I felt that the QToolBox offered too 'flat' a solution. Let me know your opinion or suggestions for a better approach.

Best regards,

Mads



On 01/30/2013 07:11 PM, Detlev Offenbach wrote:

Hi Mads,

why are you using QTreeView? I would use QToolbox for such a layout.

Regards,

Detlev

On Tuesday 29 January 2013, 22:31:14 Mads Ipsen wrote:

Hi,

We develop a tool for manipulating atomic structures and have embedded all the manipulation widgets in a panel bar (widget on the right in attached screen0.png). The Panel bar has expandable buttons, which upon expansion display different interfaces for manipulating the atomic structures.

The whole thing is implemented using a MVC approach using a QTreeView and an overloaded QItemDelegate class used for handling painting of the buttons, sizeHints, etc. The widget interfaces however, are displayed by setting setIndexWidget() on the tree view.

This works fine if the widgets have a fixed size. However if the atomic structure changes (molecule to crystal), previously hidden GUI elements may be shown in the widget, which gives rise to a compressed (bad) layout since the index widget has a fixed size (screen1.png).

The only way I could fix this was to use an idle time, that keeps triggering the emission of the signal

sizeHintChanged(const QModelIndex & index)

from the delegate. This immediately triggers a smooth update of the index widget resulting in screen2.png. From a user perspective it works fine, but to me it appears somewhat hacky. Is there eg. a way to monitor layout changes in visible index widgets?

Best regards,

Mads

--
+-----------------------------------------------------+
| Mads Ipsen                                          |
+----------------------+------------------------------+
| Gåsebæksvej 7, 4. tv |                              |
| DK-2500 Valby        | phone:          +45-29716388 |
| Denmark              | email:mads.ip...@gmail.com  
<mailto:mads.ip...@gmail.com>  |
+----------------------+------------------------------+


--

Detlev Offenbach

det...@die-offenbachs.de



--
+-----------------------------------------------------+
| Mads Ipsen                                          |
+----------------------+------------------------------+
| Gåsebæksvej 7, 4. tv |                              |
| DK-2500 Valby        | phone:          +45-29716388 |
| Denmark              | email:  mads.ip...@gmail.com |
+----------------------+------------------------------+

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