В данный момент вы можете просто использовать макет от MrGestures, например Grid, и внутри, поместить свое изображение.
<mr:Grid HeightRequest="300"
Padding="0"
DownCommand="{Binding DownCommand}"
UpCommand="{Binding UpCommand}"
TappingCommand="{Binding TappingCommand}"
TappedCommand="{Binding TappedCommand}"
DoubleTappedCommand="{Binding DoubleTappedCommand}"
LongPressingCommand="{Binding LongPressingCommand}"
LongPressedCommand="{Binding LongPressedCommand}"
PanningCommand="{Binding PanningCommand}"
PannedCommand="{Binding PannedCommand}"
SwipedCommand="{Binding SwipedCommand}"
PinchingCommand="{Binding PinchingCommand}"
PinchedCommand="{Binding PinchedCommand}"
RotatingCommand="{Binding RotatingCommand}"
RotatedCommand="{Binding RotatedCommand}"
>
<ffimageloading:CachedImage WidthRequest="300" HeightRequest="300"
DownsampleToViewSize="true" Source="{Binding ImageUrl}">
</ffimageloading:CachedImage>
</Grid>