Canvas erasing after scale up/down or orientation change

Hi,

I have a small project where I want to draw on a canvas using DrawingCanvas from C3. Everything works correctly until here.

I added 2 buttons, one for zoom in (scale up the layer at 1.5) and one for zoom out (scale down at 1).

The problem is that when I scale up/down, whatever I draw until then will be erased. The same happened on mobile if I will switch from the portrait to landscape.

Anybody had this problem? How can I solve it?

Thanks! :)

This is by design - it will be triggering 'On resolution changed' for you to redraw the content at a new resolution. See the manual entry.

Hi. Yes, I saw that.. I was looking for a solution on how to not trigger that. I didn't manage to make it work as I wanted.