internal PressAndTapEventArgs(GestureInfo info)
: base(info)
{
int pointsStruct = LoDWord(info.arguments);
Distance = new Point(LoWord(pointsStruct), HiWord(pointsStruct));
}
internal PanEventArgs(GestureInfo info, Point lastPanPoint)
: base(info)
{
int hiword = HiDWord(info.arguments);
InertiaVector = new Point(LoWord(hiword), HiWord(hiword));
PanOffset = new Point(Location.X - lastPanPoint.X, Location.Y - lastPanPoint.Y);
}
private bool OnTwoFingerTap(GestureInfo info)
{
if (TwoFingerTap != null)
{
var args = new TwoFingerTapEventArgs(info);
TwoFingerTap(this, args);
return(args.Handled);
}
return(false);
}
private bool OnPressAndTap(GestureInfo info)
{
if (PressAndTap != null)
{
var args = new PressAndTapEventArgs(info);
PressAndTap(this, args);
return(args.Handled);
}
return(false);
}
internal RotateEventArgs(GestureInfo info, double lastRotation)
: base(info)
{
int loword = LoDWord(info.arguments);
TotalAngle = RotateAngleFromArgument(loword);
Angle = TotalAngle - lastRotation;
string msg = string.Format("Total:{0} Angle:{1} Last:{2}", TotalAngle, Angle, lastRotation);
System.Diagnostics.Debug.WriteLine(msg);
}
/// <summary>
/// Gets the gesture info.
/// </summary>
/// <param name="gestureInfoHandle">The gesture info handle.</param>
/// <param name="gestureInfo">The gesture info.</param>
/// <returns></returns>
public static bool GetGestureInfo(IntPtr gestureInfoHandle, out GestureInfo gestureInfo)
{
gestureInfo = new GestureInfo();
if (_pGetGestureInfoPtr == null)
{
return(false);
}
gestureInfo.size = Marshal.SizeOf(gestureInfo);
return(_pGetGestureInfoPtr(gestureInfoHandle, ref gestureInfo));
}
private bool OnZoom(GestureInfo info)
{
if (Zoom != null)
{
if (info.Begin)
{
_lastZoom = info.arguments;
}
var args = new ZoomEventArgs(info, _lastZoom);
_lastZoom = args.Distance;
Zoom(this, args);
return(args.Handled);
}
return(false);
}
private bool OnPan(GestureInfo info)
{
if (Pan != null)
{
if (info.Begin)
{
_lastPanPoint = new Point(info.location.x, info.location.y);
}
var args = new PanEventArgs(info, _lastPanPoint);
_lastPanPoint = new Point(info.location.x, info.location.y);
Pan(this, args);
return(args.Handled);
}
return(false);
}
private bool OnRotate(GestureInfo info)
{
if (Rotate != null)
{
if (info.Begin)
{
_lastRotation = 0;
}
var args = new RotateEventArgs(info, _lastRotation);
if (!info.Begin)
{
// First rotation is the angle the fingers are at, so don't use it
_lastRotation = args.TotalAngle;
}
Rotate(this, args);
return(args.Handled);
}
return(false);
}
/// <summary>
/// Gets the gesture info.
/// </summary>
/// <param name="gestureInfoHandle">The gesture info handle.</param>
/// <param name="gestureInfo">The gesture info.</param>
/// <returns></returns>
public static bool GetGestureInfo( IntPtr gestureInfoHandle, out GestureInfo gestureInfo )
{
gestureInfo = new GestureInfo();
if ( _pGetGestureInfoPtr == null )
return false;
gestureInfo.size = Marshal.SizeOf( gestureInfo );
return _pGetGestureInfoPtr( gestureInfoHandle, ref gestureInfo );
}
private bool OnZoom( GestureInfo info )
{
if ( Zoom != null )
{
if ( info.Begin )
{
_lastZoom = info.arguments;
}
var args = new ZoomEventArgs( info, _lastZoom );
_lastZoom = args.Distance;
Zoom( this, args );
return args.Handled;
}
return false;
}
private bool OnTwoFingerTap( GestureInfo info )
{
if ( TwoFingerTap != null )
{
var args = new TwoFingerTapEventArgs( info );
TwoFingerTap( this, args );
return args.Handled;
}
return false;
}
private bool OnRotate( GestureInfo info )
{
if ( Rotate != null )
{
if ( info.Begin )
{
_lastRotation = 0;
}
var args = new RotateEventArgs( info, _lastRotation );
if ( !info.Begin )
{
// First rotation is the angle the fingers are at, so don't use it
_lastRotation = args.TotalAngle;
}
Rotate( this, args );
return args.Handled;
}
return false;
}
private bool OnPressAndTap( GestureInfo info )
{
if ( PressAndTap != null )
{
var args = new PressAndTapEventArgs( info );
PressAndTap( this, args );
return args.Handled;
}
return false;
}
private bool OnPan( GestureInfo info )
{
if ( Pan != null )
{
if ( info.Begin )
{
_lastPanPoint = new Point( info.location.x, info.location.y );
}
var args = new PanEventArgs( info, _lastPanPoint );
_lastPanPoint = new Point( info.location.x, info.location.y );
Pan( this, args );
return args.Handled;
}
return false;
}
internal ZoomEventArgs(GestureInfo info, long lastZoomDistance)
: base(info)
{
Distance = info.arguments;
PercentChange = (double)Distance / lastZoomDistance;
}
internal GestureEventArgs(GestureInfo info)
{
Location = new Point(info.location.x, info.location.y);
Info = info;
Handled = true;
}
internal TwoFingerTapEventArgs(GestureInfo info)
: base(info)
{
Distance = info.arguments;
}
