rounded edges slidable

[Decron]

Hi all,

I'm working on finding the best method to shape a slidable when it's displayed onscreen. It seems that while rendering, the action panes exhibit some odd behaviors that can be hard to control for. Sometimes when a shape-altering parent or child widget is introduced, only the action panes will change and not the child tree. Other times only the child changes and the action panes do not respond.

I've tried combinations of Cards, Containers and clipping widgets but I can't seem to find a good general approach to make a robust rounded edge slidable. Has anyone had any success doing this, and would you be willing to share how this was accomplished?