private bool CheckIsSimpleZoom(ManipulationDeltaEventArgs e)
{
if ((DateTime.Now - this.gestureTime).TotalMilliseconds > 150)
{
bool isInTime = this.IsFingersTouchInTime();
if (this.IsZoom(e.CumulativeManipulation.Scale) && isInTime)
{
double distance = this.GetMinFingerDistance(e);
if (distance > GestureConsts.Current.OneFingerSize && e.CumulativeManipulation.Translation.Length < GestureConsts.Current.MultiFingerZoomLimitDrag * 2)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Zoom;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, (TouchDevice)e.Manipulators.First());
arg.Tag = e.DeltaManipulation.Scale;
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
}
return(true);
}
}
return(false);
}
private void GestureEnd(TouchDevice device)
{
if (this.GestureStatus.Count <= 0 || this.AssociatedObject.TouchesOver.Count() <= 1 || this.isGestureBehavior)
{
Console.WriteLine("Tap time is " + (DateTime.Now - this.gestTimeRecord).TotalMilliseconds);
if (this.isGestureBehavior == false && (DateTime.Now - this.gestTimeRecord).TotalMilliseconds < 350)
{
this.isGestureBehavior = true;;
this.currentGesture = GestureResult.Tap;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentGesture, device);
this.FireEvent(arg);
this.GestureEnd(device);
}
else
{
this.isGestureBehavior = false;
this.currentGesture = GestureResult.End;
if (this.GestureStatus.Count > 0)
{
this.GestureStatus.Clear();
}
this.gestureCount = 0;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentGesture, device);
this.FireEvent(arg);
}
}
}
private void ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
if (e.Manipulators != null && e.Manipulators.Count() > 0)
{
TouchDevice device = e.Manipulators.First() as TouchDevice;
if (device == null)
{
return;
}
if (this.isGestureBehavior)
{
this.isHold = false;
if ((this.currentResult == GestureResult.Drag || this.currentResult == GestureResult.Zoom || this.currentResult == GestureResult.OneFinger) && this.gestureDetalBehavior != null)
{
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, device);
this.gestureDetalBehavior(arg, e.DeltaManipulation, e.CumulativeManipulation);
}
return;
}
this.CheckOnMultiplefingersTouch();
this.CheckIsBreakHold(e);
this.AddManipluations(e);
//Check other gesturevp
if (this.CheckIsAreaGesture(e) || this.CheckFiveFingersScrath(e) || this.CheckZoomOrDragGesture(e) || this.CheckIsSimpleZoom(e) || this.CheckIsSimpleDrag(e))
{
return;
}
}
}
private void FireZoomOrScrachEvnet(TouchDevice device, Vector zoomArg)
{
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentGesture, device);
arg.Tag = zoomArg;
arg.Info = this.GestureStatus;
this.FireEvent(arg);
this.isGestureBehavior = true;
}
private void FireEvent(GestureArg arg)
{
this.AssociatedObject.Dispatcher.BeginInvoke((Action)(() =>
{
if (this.OnGestureDetector != null)
{
this.OnGestureDetector(this.AssociatedObject, arg);
}
}));
}
private void FireHoldEvent(TouchDevice device, Point newCenter)
{
this.currentGesture = GestureResult.Hold;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentGesture, device);
Vector vector = this.GetCumulativeTransitionResultParamater(newCenter);
arg.Tag = vector;
arg.Info = this.GestureStatus;
this.FireEvent(arg);
this.isGestureBehavior = true;;
}
private bool CheckIsDoubleTap(TouchDevice device)
{
if (this.AssociatedObject.TouchesOver.Count() == 1)
{
if (this.preTouchUpInfo != null && this.lastTouchUpInfo == null)
{
bool isVaild = this.preTouchUpInfo.IsVaild(DateTime.Now);
if (isVaild == false)
{
this.preTouchUpInfo = null;
return(false);
}
}
else if (this.lastTouchUpInfo != null)
{
bool isVaild = this.lastTouchUpInfo.IsVaild(DateTime.Now);
if (isVaild == false)
{
this.preTouchUpInfo = null;
this.lastTouchUpInfo = null;
return(false);
}
else
{
double diffTime = (this.lastTouchUpInfo.TouchTime - this.preTouchUpInfo.TouchTime).TotalMilliseconds;
if (diffTime < GestureConsts.Current.VaildDoubleTapTimeDiff)
{
double diff = this.GetPowDis(this.lastTouchUpInfo.TouchPoint, this.preTouchUpInfo.TouchPoint);
if (diff < GestureConsts.Current.DoubleTapDistance)
{
this.currentResult = GestureResult.DoubleTap;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, device);
List <Point> posInfo = new List <Point>();
posInfo.Add(this.preTouchUpInfo.TouchPoint);
posInfo.Add(this.lastTouchUpInfo.TouchPoint);
arg.Tag = posInfo;
if (this.OnGestureDetector != null)
{
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
this.preTouchUpInfo = null;
this.lastTouchUpInfo = null;
return(true);
}
}
this.preTouchUpInfo = this.lastTouchUpInfo;
this.lastTouchUpInfo = null;
}
}
}
return(false);
}
private void CheckOnMultiplefingersTouch()
{
IEnumerable <TouchDevice> devices = this.AssociatedObject.TouchesOver;
if (this.gestureFingerCount >= 2 || devices.Count() >= 2)
{
if (this.gestureStatusBehavior != null)
{
if (devices.Count() > 0)
{
GestureArg arg = new GestureArg(this.AssociatedObject, GestureResult.MultipleFingers, devices.First());
arg.Info = devices;
this.gestureStatusBehavior(arg);
}
}
}
}
private void TheProcessAfterGestureDetermined(TouchDevice device, Point newCenter, double newRadius)
{
if (this.gestureDetalBehavior != null)
{
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentGesture, device);
arg.Info = this.GestureStatus;
if (this.currentGesture == GestureResult.Zoom)
{
Vector zoomResult = GetZoomResultParamater(newRadius);
Vector zoomCumulativeResult = GetCumulativeZoomResultParamater(newRadius);
this.gestureDetalBehavior(arg, zoomCumulativeResult, zoomResult);
}
else
{
Vector transition = GetTransitionResultParamater(newCenter);
Vector transitionCumulative = this.GetCumulativeTransitionResultParamater(newCenter);
this.gestureDetalBehavior(arg, transitionCumulative, transition);
}
}
}
/// <summary>
/// Fire the Hold event
/// </summary>
void Tmer_Hold(object sender, EventArgs e)
{
timer.Stop();
if (this.AssociatedObject.TouchesOver.Count() > 0)
{
TouchDevice device = this.AssociatedObject.TouchesOver.First();
TouchPoint point = device.GetTouchPoint(Application.Current.MainWindow);
Point startPos = (Point)timer.Tag;
if (point.Position.Sub(startPos).Length() < GestureConsts.Current.ShakedThreshold)
{
if (this.isHold && this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Hold;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, null);
arg.Tag = this.timer.Tag;
this.OnGestureDetector(this.AssociatedObject, arg);
this.isGestureBehavior = true;
this.isHold = false;
}
}
}
}
private bool CheckIsSimpleDrag(ManipulationDeltaEventArgs e)
{
if ((DateTime.Now - this.gestureTime).TotalMilliseconds > 150)
{
bool isSimpleDrag = this.IsSimpleDrag(e, this.sensitiveFactor.DragFactor);
bool isInTime = this.IsFingersTouchInTime();
if (e.Manipulators.Count() == 2 && isSimpleDrag && isInTime)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Drag;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, (TouchDevice)e.Manipulators.First());
arg.Tag = e.DeltaManipulation.Translation;
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
return(true);
}
}
return(false);
}
private bool CheckZoomOrDragGesture(ManipulationDeltaEventArgs e)
{
double costTime = (DateTime.Now - this.gestureTime).TotalMilliseconds;
TraceLog("Cost time:" + costTime);
if (costTime > 60)
{
GestureResult result = this.GetDragOrZoomGestureResult(e);
if (result == GestureResult.Drag)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Drag;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, (TouchDevice)e.Manipulators.First());
arg.Tag = e.CumulativeManipulation.Translation;
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
return(true);
}
else if (result == GestureResult.Zoom)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Zoom;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, (TouchDevice)e.Manipulators.First());
arg.Tag = e.DeltaManipulation.Scale;
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
return(true);
}
}
return(false);
}
private bool CheckIsAreaGesture(ManipulationDeltaEventArgs e)
{
int fingerCount = this.AssociatedObject.TouchesOver.Count();
if (fingerCount > this.gestureFingerCount)
{
this.gestureFingerCount = fingerCount;
}
TouchDevice device = (TouchDevice)e.Manipulators.First();
TouchPoint point = device.GetTouchPoint(Application.Current.MainWindow);
double mendedHeight = GestureDetector.GetMendedHeight(point.Size.Width, point.Size.Height);
if (GestureDetector.IsErase(point.Size.Width, mendedHeight))
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Brush;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, device);
arg.Tag = new Rect(point.Position.X, point.Position.Y, point.Size.Width, mendedHeight);
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
return(true);
}
else
{
if (this.gestureFingerCount == 1)
{
double checkWidht = point.Size.Width;
double checkHeight = mendedHeight;
double checkRadio = checkHeight / checkWidht;
bool isZoom = this.IsZoom(e.CumulativeManipulation.Scale);
if (
(checkRadio > GestureConsts.Current.FingerHeightWidhtRatio || checkWidht < (1 / GestureConsts.Current.FingerHeightWidhtRatio)) &&
(Math.Min(checkWidht, checkHeight) > GestureConsts.Current.OneFingerSize)
)
{
if (this.gestureStatusBehavior != null)
{
this.gestureStatusBehavior(new GestureArg(this.AssociatedObject, GestureResult.MultipleFingers, device));
}
if (e.CumulativeManipulation.Translation.Length > GestureConsts.Current.MultiFingerDragThreshold && isZoom == false)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.Drag;
GestureArg arg = new GestureArg(this.AssociatedObject, this.currentResult, device);
arg.Tag = e.CumulativeManipulation.Translation;
this.OnGestureDetector(this.AssociatedObject, arg);
}
this.isGestureBehavior = true;
return(true);
}
}
else if (e.CumulativeManipulation.Translation.Length > GestureConsts.Current.MultiFingerDragThreshold && isZoom == false)
{
if (this.OnGestureDetector != null)
{
this.currentResult = GestureResult.OneFinger;
this.OnGestureDetector(this.AssociatedObject, new GestureArg(this.AssociatedObject, this.currentResult, device));
}
this.isGestureBehavior = true;
return(true);
}
}
}
return(false);
}
