Notebook, Tablet PC, and UMPC Development
Hello.
Is there any way to modify the default selection adorner in an InkCanvas For example, I would like to make the resize handles round instead of square, change their color, or even enable/disable some of them depending on the element selected.
If this is not possible with InkCanvas, where should I start to building towards this result
Thank you.
Hi,
InkCanvas's selection adorner does not currently have a built-in extensibility mechanism. This is something we are looking into for future versions of WPF. There are two ways to do this today: (a) roll your own Ink control by using the building blocks we provide (InkPresenter, DynamicRenderer, etc.) and then implement your own selection adorner from scratch - or (b) derive from InkCanvas and add your own EditingMode that provides your specialized selection behavior.
Going down route (b) is probably faster and simpler. If you choose to go down route (a), you might find this article helpful:
http://msdn2.microsoft.com/en-gb/library/ms752334.aspx
Thanks, Stefan Wick
Hi Boris,
it is actually easier than that. You can re-use the existing lasso functionality of the InkCanvasEditingMode.Select mode. Then, in the SelectionChanged event, you can get a reference to the selected strokes (and/or elements). Now clear the selection (to get rid of the standard adorner) and then bring up your custom adorner.
I have put together a sample app that demonstrates this with a simple, custom adorner that allows rotation of selected ink. I will put it up on http://wpf.netfx3.com/ once I have the permission to post there.
I'll post again with the actual link to the sample.
Thanks, Stefan Wick
Stefan - thank you very much for your help. It's funny that as I was at lunch today thinking about what you said I also considered doing exactly what you said above... I'm happy that you confirmed my thoughts. Thanks again!
Boris
I have posted the sample code here:
Thanks, Stefan Wick