private void C1TouchEventProvider1_ManipulationStarting(object sender, C1.Win.TouchToolKit.ManipulationStartingEventArgs e)
{
Point pointerPosition = e.Position;
bool hitTest = this.paintPanel1.HitTest(pointerPosition);
if (this.TouchMode == MyTouchMode.Default)
{
if (hitTest)
{
e.Mode = ManipulationModes.All;
}
else
{
e.Mode = ManipulationModes.Rotate | ManipulationModes.RotateInertia;
}
}
else
{
if (this.paintPanel1.ActiveImageIndex != -1)
{
ManipulationPivot pivot = new ManipulationPivot();
pivot.Center = this.paintPanel1.GetImageCenter(this.paintPanel1.ActiveImageIndex);
pivot.Radius = this.paintPanel1.GetImageRadius(this.paintPanel1.ActiveImageIndex);
e.Pivot = pivot;
}
e.Mode = ManipulationModes.Rotate | ManipulationModes.RotateInertia;
}
manipulationMode = e.Mode;
if (e.Mode == ManipulationModes.All)
{
e.Handled = true;
}
}
void PivotDebugMessage(ManipulationPivot pivot)
{
if (pivot == null)
{
return;
}
var result = " x=[" + pivot.Center.X + "] y=[" + pivot.Center.Y + "] r=[" + pivot.Radius + "]";
DebugMessage("Pivot:" + result);
}
//<SnippetManipulationPivot>
void Window_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
{
// Set the ManipulationPivot so that the element rotates as it is
// moved with one finger.
FrameworkElement element = e.OriginalSource as FrameworkElement;
ManipulationPivot pivot = new ManipulationPivot();
pivot.Center = new Point(element.ActualWidth / 2, element.ActualHeight / 2);
pivot.Radius = 20;
e.Pivot = pivot;
e.ManipulationContainer = this;
e.Handled = true;
}
/// <summary> /// Sets an object that describes the pivot for a single-point manipulation. /// </summary> /// <param name="e">The requested <see cref="ManipulationStartingRoutedEventArgs"/>.</param> /// <param name="pivot">An object that describes the pivot for a single-point manipulation.</param> public static void Pivot(this ManipulationStartingRoutedEventArgs e, ManipulationPivot pivot) => Resolver.Pivot(e, pivot);
void IManipulationStartingRoutedEventArgsResolver.Pivot(ManipulationStartingRoutedEventArgs e, ManipulationPivot pivot) => e.Pivot = pivot;