DavideZordan.net

I’ve updated the behavior available in the Expression Community gallery adding Multi-Touch manipulation (translation, rotation and zoom) and inertia effects using code from the Surface Manipulations and Inertia Sample for Microsoft Silverlight.

To enable Multi-Touch in your code simply download the behavior from here, add the project “MultiTouch.Behaviors.Silverlight” to a Visual Studio solution and then enable the gestures in XAML:

<UserControl x:Class="SilverlightMultiTouch.MainPage"
...
xmlns:interactivity="clr-namespace:System.Windows.Interactivity; assembly=System.Windows.Interactivity"
xmlns:behaviors="clr-namespace:MultiTouch.Behaviors.Silverlight; assembly=MultiTouch.Behaviors.Silverlight"
...
>

<Canvas>
  <Image Source="Images/Desert.jpg">
     <interactivity:Interaction.Behaviors>
         <behaviors:MultiTouchManipulationBehavior InertiaEnabled="True" TouchRotateEnabled="True" TouchTranslateEnabled="True" TouchScaleEnabled="True"/>
     </interactivity:Interaction.Behaviors>
  </Image>

  <Image Source="Images/Jellyfish.jpg">
     <interactivity:Interaction.Behaviors>
         <behaviors:MultiTouchManipulationBehavior InertiaEnabled="True" TouchRotateEnabled="True" TouchTranslateEnabled="True" TouchScaleEnabled="True"/>
     </interactivity:Interaction.Behaviors>
  </Image>
</Canvas>

The MultiTouchManipulationBehavior also contains some dependency properties (TouchRotateEnabled, TouchTranslateEnabled, TouchScaleEnabled and InertiaEnabled) to enable the corresponding gestures.

The example contains Multi-Touch manipulations applied to some Image controls and a Smooth streaming player of the Silverlight Media Framework.

I’ve also posted to CodePlex a sample using WPF 4 based on the article “Introduction to WPF 4 Multitouch“ by Jaime Rodriguez.

Hope this helps and Happy Silverlighting!