/// <summary>
/// Radius changed.
/// </summary>
/// <param name="d">The d.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void RadiusChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PulseButton pb = (PulseButton)d;
if (pb == null || pb.partPulseContainer == null)
{
return;
}
if (!pb.IsEllipsis)
{
PulsesChanged(d, e);
}
}
/// <summary>
/// Determines whether IsPulsing changed.
/// </summary>
/// <param name="d">The d.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void IsPulsingChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PulseButton pb = (PulseButton)d;
if (pb == null || pb.partPulseContainer == null)
{
return;
}
if (!pb.IsPulsing)
{
pb.partPulseContainer.Children.Clear();
}
else
{
PulsesChanged(d, e);
}
}
/// <summary>
/// Pulses changed.
/// </summary>
/// <param name="d">The d.</param>
/// <param name="e">The <see cref="DependencyPropertyChangedEventArgs"/> instance containing the event data.</param>
private static void PulsesChanged(DependencyObject d, DependencyPropertyChangedEventArgs e)
{
PulseButton pb = (PulseButton)d;
if (pb == null || pb.partPulseContainer == null || !pb.IsPulsing)
{
return;
}
// Clear all pulses
pb.partPulseContainer.Children.Clear();
int items = pb.Pulses;
// Add pulses
for (int i = 0; i < items; i++)
{
Shape shape = pb.IsEllipsis ?
(Shape) new Ellipse
{
StrokeThickness = pb.PulseWidth,
Stroke = pb.PulseColor,
RenderTransformOrigin = new Point(0.5, 0.5),
IsHitTestVisible = false
} :
new Rectangle
{
RadiusX = pb.RadiusX,
RadiusY = pb.RadiusY,
StrokeThickness = pb.PulseWidth,
Stroke = pb.PulseColor,
RenderTransformOrigin = new Point(0.5, 0.5),
IsHitTestVisible = false
};
pb.partPulseContainer.Children.Add(shape);
}
// Set animations
pb.SetStoryBoard(pb);
}
/// <summary>
/// Sets the story board for the pulses
/// </summary>
/// <param name="pb">The pb.</param>
private void SetStoryBoard(PulseButton pb)
{
double delay = 0;
// Correct PulseScale according to control dimensions
double correctedFactorX = pb.PulseScale, correctedFactorY = pb.PulseScale;
if (pb.IsMeasureValid)
{
if (pb.ActualHeight < pb.ActualWidth)
{
correctedFactorY = (pb.PulseScale - 1) * ((pb.ActualWidth - pb.ActualHeight) / (1 + pb.ActualHeight)) + pb.PulseScale;
}
else
{
correctedFactorX = (pb.PulseScale - 1) * ((pb.ActualHeight - pb.ActualWidth) / (1 + pb.ActualWidth)) + pb.PulseScale;
}
}
// Add pulses
foreach (Shape shape in pb.partPulseContainer.Children)
{
shape.RenderTransform = new ScaleTransform();
// X-axis animation
DoubleAnimation animation = new DoubleAnimation(1, correctedFactorX, pb.PulseSpeed)
{
RepeatBehavior = RepeatBehavior.Forever,
AutoReverse = false,
BeginTime = TimeSpan.FromMilliseconds(delay),
EasingFunction = pb.PulseEasing
};
// Y-axis animation
DoubleAnimation animation2 = new DoubleAnimation(1, correctedFactorY, pb.PulseSpeed)
{
RepeatBehavior = RepeatBehavior.Forever,
AutoReverse = false,
BeginTime = TimeSpan.FromMilliseconds(delay),
EasingFunction = pb.PulseEasing
};
// Opacity animation
DoubleAnimation animation3 = new DoubleAnimation(1, 0, pb.PulseSpeed)
{
RepeatBehavior = RepeatBehavior.Forever,
AutoReverse = false,
BeginTime = TimeSpan.FromMilliseconds(delay)
};
// Set delay between pulses
delay += pb.PulseSpeed.TimeSpan.TotalMilliseconds / pb.Pulses;
// Create storyboard
Storyboard storyboard = new Storyboard();
storyboard.Children.Add(animation);
storyboard.Children.Add(animation2);
storyboard.Children.Add(animation3);
Storyboard.SetTarget(animation, shape);
Storyboard.SetTarget(animation2, shape);
Storyboard.SetTarget(animation3, shape);
if (pb.IsEllipsis)
{
Storyboard.SetTargetProperty(animation, new PropertyPath("(Ellipse.RenderTransform).(ScaleTransform.ScaleX)"));
Storyboard.SetTargetProperty(animation2, new PropertyPath("(Ellipse.RenderTransform).(ScaleTransform.ScaleY)"));
Storyboard.SetTargetProperty(animation3, new PropertyPath("(Ellipse.Opacity)"));
}
else
{
Storyboard.SetTargetProperty(animation, new PropertyPath("(Rectangle.RenderTransform).(ScaleTransform.ScaleX)"));
Storyboard.SetTargetProperty(animation2, new PropertyPath("(Rectangle.RenderTransform).(ScaleTransform.ScaleY)"));
Storyboard.SetTargetProperty(animation3, new PropertyPath("(Rectangle.Opacity)"));
}
// Start storyboard
storyboard.Begin();
}
#endregion
}
