protected override void OnPreviewMouseLeftButtonDown(MouseButtonEventArgs e)
{
var point = e.GetPosition(this);
if (RippleAssist.GetIsCentered(this))
{
var innerContent = (Content as FrameworkElement);
if (innerContent != null)
{
var position = innerContent.TransformToAncestor(this)
.Transform(new Point(0, 0));
RippleX = position.X + innerContent.ActualWidth / 2 - RippleSize / 2;
RippleY = position.Y + innerContent.ActualHeight / 2 - RippleSize / 2;
}
else
{
RippleX = ActualWidth / 2 - RippleSize / 2;
RippleY = ActualHeight / 2 - RippleSize / 2;
}
}
else
{
RippleX = point.X - RippleSize / 2;
RippleY = point.Y - RippleSize / 2;
}
VisualStateManager.GoToState(this, TemplateStateNormal, false);
VisualStateManager.GoToState(this, TemplateStateMousePressed, true);
PressedInstances.Add(this);
base.OnPreviewMouseLeftButtonDown(e);
}
private void OnSizeChanged(object sender, SizeChangedEventArgs sizeChangedEventArgs)
{
var innerContent = (Content as FrameworkElement);
double width, height;
if (RippleAssist.GetIsCentered(this) && innerContent != null)
{
width = innerContent.ActualWidth;
height = innerContent.ActualHeight;
}
else
{
width = sizeChangedEventArgs.NewSize.Width;
height = sizeChangedEventArgs.NewSize.Height;
}
var radius = Math.Sqrt(Math.Pow(width, 2) + Math.Pow(height, 2));
RippleSize = 2 * radius * RippleAssist.GetRippleSizeMultiplier(this);
}