Overlay zoomable controls

Apr 24, 2014 at 1:16 PM
Edited Apr 24, 2014 at 1:45 PM
I'm trying to overlay some buttons with the image. Basically I'm trying to do like described in this post https://jimlynn.wordpress.com/2009/09/17/scale-other-content-on-top-of-a-deep-zoom-image/ . Unfortunately this is for Silverlight and ViewportChanged, ViewportOrigin and ViewportWidth are not available for the WPF control. Is there any workaround to get or calculate these values?