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using System;
using System.Windows;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Shapes;
namespace BasicManipulation
{
/// <summary>
/// Interaction logic for MainWindow.xaml
/// </summary>
public partial class MainWindow : Window
{
public MainWindow()
{
InitializeComponent();
}
//<SnippetManipulationStarting>
void Window_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
{
e.ManipulationContainer = this;
e.Handled = true;
}
//</SnippetManipulationStarting>
//<SnippetManipulationDelta>
void Window_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
// Get the Rectangle and its RenderTransform matrix.
Rectangle rectToMove = e.OriginalSource as Rectangle;
Matrix rectsMatrix = ((MatrixTransform)rectToMove.RenderTransform).Matrix;
// Rotate the Rectangle.
rectsMatrix.RotateAt(e.DeltaManipulation.Rotation,
e.ManipulationOrigin.X,
e.ManipulationOrigin.Y);
// Resize the Rectangle. Keep it square
// so use only the X value of Scale.
rectsMatrix.ScaleAt(e.DeltaManipulation.Scale.X,
e.DeltaManipulation.Scale.X,
e.ManipulationOrigin.X,
e.ManipulationOrigin.Y);
// Move the Rectangle.
rectsMatrix.Translate(e.DeltaManipulation.Translation.X,
e.DeltaManipulation.Translation.Y);
// Apply the changes to the Rectangle.
rectToMove.RenderTransform = new MatrixTransform(rectsMatrix);
Rect containingRect =
new Rect(((FrameworkElement)e.ManipulationContainer).RenderSize);
Rect shapeBounds =
rectToMove.RenderTransform.TransformBounds(
new Rect(rectToMove.RenderSize));
// Check if the rectangle is completely in the window.
// If it is not and intertia is occuring, stop the manipulation.
if (e.IsInertial && !containingRect.Contains(shapeBounds))
{
e.Complete();
}
e.Handled = true;
}
//</SnippetManipulationDelta>
//<SnippetManipulationInertiaStarting>
void Window_InertiaStarting(object sender, ManipulationInertiaStartingEventArgs e)
{
// Decrease the velocity of the Rectangle's movement by
// 10 inches per second every second.
// (10 inches * 96 pixels per inch / 1000ms^2)
e.TranslationBehavior.DesiredDeceleration = 10.0 * 96.0 / (1000.0 * 1000.0);
// Decrease the velocity of the Rectangle's resizing by
// 0.1 inches per second every second.
// (0.1 inches * 96 pixels per inch / (1000ms^2)
e.ExpansionBehavior.DesiredDeceleration = 0.1 * 96 / (1000.0 * 1000.0);
// Decrease the velocity of the Rectangle's rotation rate by
// 2 rotations per second every second.
// (2 * 360 degrees / (1000ms^2)
e.RotationBehavior.DesiredDeceleration = 720 / (1000.0 * 1000.0);
e.Handled = true;
}
//</SnippetManipulationInertiaStarting>
}
}