protected override void OnPointerWheelChanged(PointerRoutedEventArgs e)
{
base.OnPointerWheelChanged(e);
if (e == null || m_transform == null)
{
return;
}
if (Render == null)
{
return;
}
e.Handled = true;
var pointer = e.GetCurrentPoint(Parent as Canvas);
if (e.KeyModifiers == Windows.System.VirtualKeyModifiers.Control)
{
var s = (1 + (float)pointer.Properties.MouseWheelDelta / 2400.0f);
m_transform.ScaleX *= s;
m_transform.ScaleY *= s;
Render.Scale *= s;
}
CompositeTransformChange?.Invoke(this);
}
protected override void OnManipulationDelta(ManipulationDeltaRoutedEventArgs e)
{
base.OnManipulationDelta(e);
if (e == null || m_transform == null)
{
return;
}
if (Render == null)
{
return;
}
e.Handled = true;
m_transform.ScaleX *= e.Delta.Scale;
m_transform.ScaleY *= e.Delta.Scale;
m_transform.Rotation += e.Delta.Rotation;
m_transform.TranslateX += e.Delta.Translation.X;
m_transform.TranslateY += e.Delta.Translation.Y;
Render.Left = m_transform.TranslateX;
Render.Top = m_transform.TranslateY;
CompositeTransformChange?.Invoke(this);
}