I’ve just finished some experiments using the Windows Phone 7 emulator and the “Microsoft Surface Manipulations and Inertia Sample for Microsoft Silverlight” in order to enable Multi-Touch gestures using Blend Behaviors:
This new implementation, now available for download in the Expression Gallery, permits to enable Multi-Touch gestures (the usual translation, rotation, zoom and inertia) on separate User Controls available in the same container.
In this way you can apply distinct Multi-Touch manipulations (inertia included) to single elements using a single code in xaml:
<Grid x:Name="ContentPanel" Grid.Row="1">
<Image Source="Images/Desert.jpg" x:Name="image1">
<WP7:MultiTouchManipulationBehavior IsInertiaEnabled="True" IsRotateEnabled="True" IsTranslateEnabled="True" IsScaleEnabled="True" MinimumScaleRadius="1" MaximumScaleRadius="720"/>
<Image Source="Images/Jellyfish.jpg" x:Name="image2">
<WP7:MultiTouchManipulationBehavior IsInertiaEnabled="True" IsRotateEnabled="True" IsTranslateEnabled="True" IsScaleEnabled="True" MinimumScaleRadius="60" MaximumScaleRadius="360"/>
Alternatively you can use Blend inserting a reference to the project MultiTouch.Behaviors.Silverlight.WP7 and then dragging the MultiTouchManipulationBehavior from the Assets section to the control to be touch-enabled:
This one has been an interesting exercise in porting code written for Silverlight to Windows Phone: I had only to create a Windows Phone 7 project and add to it the code already available for the Silverlight version and all worked well quite quickly.
At this time the behavior works only in the fixed Portrait orientation of Windows Phone: if you change to Landscape the manipulation doesn’t work well. I’ll have to investigate further and currently I don’t have a physical device to test (I’d really love to have a device to try it :)).