public static void OnPointerPressed(RadialSlider slider, PointerRoutedEventArgs e)
{
slider.CapturePointer(e.Pointer);
_lastPoint = e.GetCurrentPoint(slider);
_isDragActive = true;
e.Handled = true;
}
public static void OnPointerReleased(RadialSlider slider, PointerRoutedEventArgs e)
{
slider.ReleasePointerCapture(e.Pointer);
_isDragActive = false;
if (_lastPoint.Position.X < 0 || _lastPoint.Position.Y < 0 || _lastPoint.Position.X > slider.ActualWidth || _lastPoint.Position.Y > slider.ActualHeight)
slider.RaiseOnPointerExited(e);
e.Handled = true;
}
public static void OnPointerMoved(RadialSlider slider, PointerRoutedEventArgs e)
{
if (_isDragActive)
{
PointerPoint currentPoint = e.GetCurrentPoint(slider);
double delta = _lastPoint.Position.Y - currentPoint.Position.Y;
if (e.KeyModifiers != slider.SlowerKey || slider.SlowerKey == null)
slider.Value = slider.Normalize(slider.Value + delta / 10 * slider.LargeChange);
else
slider.Value = slider.Normalize(slider.Value + delta / 10 * slider.SmallChange);
_lastPoint = currentPoint;
e.Handled = true;
}
}