public static void UpdateTransformation(this EvasObject platformView, IView?view)
{
if (view == null)
{
return;
}
// prepare the EFL effect structure
Rect geometry = platformView.Geometry;
EvasMap map = new EvasMap(4);
map.PopulatePoints(geometry, 0);
bool changed = false;
view.ApplyScale(map, geometry, ref changed);
view.ApplyRotation(platformView, map, geometry, ref changed);
view.ApplyTranslation(map, geometry, ref changed);
platformView.IsMapEnabled = changed;
if (changed)
{
platformView.EvasMap = map;
if (!s_movedHandlers.ContainsKey(platformView))
{
// not registered moved handler
s_movedHandlers[platformView] = () => platformView.UpdateTransformation(view);
platformView.Moved += OnMoved;
}
}
else
{
if (s_movedHandlers.ContainsKey(platformView))
{
// need to unregister moved handler
platformView.Moved -= OnMoved;
s_movedHandlers.Remove(platformView);
}
}
}