RadPane size changing on float

[Martin]

I would like the RadPane to stay the same size when the users drags it to make it go from being docked to being floating, currently it resizes itself. I've seen this thread, but that does not cover how to actually keep it the same size as when it was docked. Possibly another technique would be to use the attached property RadDocking.FloatingSize and bind it to something rather than setting an absolute value, I don't know how this would work though.

thanks

[Martin]

Is there no solution to this? It would seem to me that the behaviour I am looking for should not only be possible, but should actually be the default. After all, if you look at any other program that has a similar type of docking (such as visual studio), they work how I have described, i.e. the panes maintain their size when floated.

[Konstantina]

Hi Martin,

Unless you know the specific size of the RadPane before dragging and it doesn't change (which will happen once it is dragged), then this cannot be achieved with the current implementation of the control. Unfortunately, there is no way to obtain the size of the RadPaneGroup before the PaneStateChange event, in which its size is already 0,0.
We will consider implementing such feature if we receive more clients' requests.

Regards,
Konstantina
the Telerik team

[Martin]

1) Do you accept that other programs (notably visual studio which otherwise has almost identical docking functionality to yours) works in the manner I have described.

2) Do you accept that having the panes arbitrarily resize when dragged will often give a very poor user experience.

[Konstantina]

Hi Martin,

We are aware of this issue with the Docking control - as you correctly mentioned, we are struggling to make the RadDocking behave as the VS docking. However, the RadDocking supports for now only relative sizing, in order to be able to support absolute sizing it needs to be majorly refactored. We have logged this request in PITS. You can vote for it and track its status. You will be notified when we start working on this request.

Greetings,
Konstantina
the Telerik team

[Steve]

While you're waiting for "major refacoring" try this...

private void OnPaneStateChange(object sender, Telerik.Windows.RadRoutedEventArgs e)
{
    var radDock = sender as RadDocking;
    if (radDock.IsLayoutChanging)
    {
        var pane = e.OriginalSource as RadPane;
        if (pane != null)
        {
            var view = pane.Content as UserControl;
            Size size = new Size(view.ActualWidth, view.ActualHeight);
            Point loc = radDock.PointToScreen(new Point(0, 0));
            var win = pane.GetParentToolWindow();
            if (win != null)
            {
                win.Left = loc.X;
                win.Top = loc.Y;
                win.Height = size.Height;
                win.Width = size.Width;
                pane.Visibility = Visibility.Collapsed;
            }
            else
            {
                pane.Visibility = Visibility.Visible;
            }
        }
    }
}

There is a slight shrinkage due to the fact that the method uses the height and width of the pane.Content; however with a little tweaking you could probably adjust for it.  Personally I didn't think it was worth it.  Btw - the diddling with the pane.Visiblity was due to the fact that when the pane was a RadDocumentPane, its tab showed up in the lower left corner of the ToolWindow.

Hope this helps,
Steve

[Ben]

The wait is over :-)

http://docs.telerik.com/devtools/wpf/controls/raddocking/features/retain-pane-size​

[Luo]

I encountered the same problem, is it solved now?

[Dinko | Tech Support Engineer]

Hello Luo,

You check the Retain Pane Size help article, which describes this functionality. Give this article a try and let me know if further assistance is required.

Regards,
Dinko
Progress Telerik