ScrollRect mask for selection also possible?

Unity Engine
1

I have been playing around with the ScrollRect and wanted to create arbitrary shape with the mask, but wanted the selection to be also only on the masked area. Is there any quick way to achieve this by default on the new UI set?

In this case I tested with circular mask inside rect, visually the masking works perfect but scrolling is effective also outside of the circular mask on the rect area.

2

Anyone know if this is possible by default or should one start to do some 2D pick and see if there was a color or something? Example image.

1888586--121514--mask.jpg
1888586--121514--mask.jpg1024×1024 59.8 KB