Improved multi-touch support in new version of ZoomPanel

I am happy to announce that a new version of ZoomPanel has been just released.

The new version brings improved support for touch and multi-touch.

The previous version of ZoomPanel already has touch support. But for that you need to use a custom MultiTouchZoomPanel control that was available in a separate project.

The reason for that separation was that the ZoomPanel library was built with .Net 3.5 framework that do not have support for touch. The MultiTouchZoomPanel was built on .Net 4 framework and was able to use touch events.

In the new version the code from MultiTouchZoomPanel is integrated into the core ZoomPanel control. The trick is that ZoomPanel comes with two builds: one .Net 3.5 and one .Net 4.0. This allows us to implement all the touch manipulation in the .Net build. The .Net 3.5 build preserves all the new properties that control the touch behaviour but an error is thrown if user wants to enable touch support.

So if you want to use touch controls all you need to do is to use the .Net 4 build of ZoomPanel. Touch controls are already enabled by default.

What is more, this version improves the pinch to zoom behavior with improving the position where the zoom occurs - now the center of zoom is between the fingers that do the pinch.