A .NET library for handling Windows 7 touch gestures
WinTouch.NET is a .NET library for handling Windows 7 Touch Gestures in a WinForms application.
It allows you to handle the following gestures,
For more information on Windows Gestures, see Windows Touch Gestures Overview on MSDN.
The library has the following features,
WinTouch.dll
to your project.GestureListener
passing in the control you want to receive touch events for.GestureConfig
objects to the GestureListener
constructor to specify which gestures you want it to capture events for. By default, it captures GestureConfigurationFlag.GC_ALLGESTURES
.GestureListener
object you created, subscribe to the gesture events that you are interested in. It supports Pan
, PressAndTap
, Rotate
, TwoFingerTap
and Zoom
.For a demo on how to use the library, see the Demo project on GitHub. Here is an example,
public partial class GestureControl : UserControl
{
// Our touch listener
private readonly GestureListener _gesture;
// Size, location and rotation of the image
private Point _location;
private int _size;
private double _rotation;
// An image to draw
private Image m_image;
// Brushes
private readonly Brush[] _backBrushes = { Brushes.White, Brushes.AntiqueWhite, Brushes.Bisque, Brushes.Wheat, Brushes.Bisque, Brushes.AntiqueWhite };
private int _backBrush;
public GestureControl()
{
InitializeComponent();
SetStyle( ControlStyles.AllPaintingInWmPaint |
ControlStyles.UserPaint |
ControlStyles.ResizeRedraw |
ControlStyles.OptimizedDoubleBuffer, true );
// Subscribe to all the touch events
_gesture = new GestureListener( this );
_gesture.Pan += OnPan;
_gesture.PressAndTap += OnPressAndTap;
_gesture.Rotate += OnRotate;
_gesture.TwoFingerTap += OnTwoFingerTap;
_gesture.Zoom += OnZoom;
m_image = Properties.Resources.windows_logo;
}
private void OnLoad( object sender, EventArgs e )
{
ResetImage();
}
private void ResetImage()
{
// Center the image on the form and make it half the width
// of the shortest side
_size = Math.Min( Width, Height ) / 2;
_location = new Point( Width / 2, Height / 2 );
_rotation = 0;
}
void OnPan( object sender, PanEventArgs e )
{
string msg = string.Format( "Pan Loc:({0},{1}) InertiaVector:({2},{3})", e.Location.X, e.Location.Y,
e.InertiaVector.X, e.InertiaVector.Y );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_location.Offset( e.PanOffset );
// Make sure it doesn't leave the screen
if ( _location.X < 0 )
_location.X = 0;
else if ( _location.X > Width )
_location.X = Width;
if ( _location.Y < 0 )
_location.Y = 0;
else if ( _location.Y > Height )
_location.Y = Height;
Invalidate();
}
}
void OnPressAndTap( object sender, PressAndTapEventArgs e )
{
string msg = string.Format( "PressAndTap Loc:({0},{1}) Distance:{2})", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
if ( ++_backBrush >= _backBrushes.Length )
{
_backBrush = 0;
}
Invalidate();
}
}
void OnRotate( object sender, RotateEventArgs e )
{
string msg = string.Format( "Rotate Loc:({0},{1}) Angle:{2}", e.Location.X, e.Location.Y, e.TotalDegrees );
Debug.WriteLine( msg );
if ( !e.Begin && !e.End )
{
_rotation -= e.Degrees;
Invalidate();
}
}
void OnTwoFingerTap( object sender, TwoFingerTapEventArgs e )
{
string msg = string.Format( "TwoFingerTap Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( e.Begin )
{
ResetImage();
Invalidate();
}
}
void OnZoom( object sender, ZoomEventArgs e )
{
string msg = string.Format( "Zoom Loc:({0},{1}) Distance:{2}", e.Location.X, e.Location.Y, e.Distance );
Debug.WriteLine( msg );
if ( !e.Begin )
{
_size = (int)(_size * e.PercentChange);
Invalidate();
}
}
protected override void OnPaint( PaintEventArgs e )
{
// Draw Background
e.Graphics.FillRectangle( _backBrushes[_backBrush], 0, 0, Width, Height );
// Draw Info
string info = string.Format( "Pos:{0} Size:{1} Rotation:{2}", _location, _size, _rotation );
e.Graphics.DrawString( info, SystemFonts.DefaultFont, Brushes.Black, 5, 5 );
// Draw Square
e.Graphics.TranslateTransform( _location.X, _location.Y );
e.Graphics.RotateTransform( (float)_rotation );
e.Graphics.TranslateTransform( -_location.X, -_location.Y );
e.Graphics.DrawImage( m_image, _location.X - _size / 2, _location.Y - _size / 2, _size, _size );
}
}