bool OnPinched(MotionEvent ev, MotionEvent.PointerCoords[] coords)
{
//if (_debugEvents) System.Diagnostics.Debug.WriteLine("onPinched [{0}]", _id);
StopTapLongPress();
_pinching = true;
var _view = (Android.Views.View)_weakReferenceView?.Get();
if (_view == null || _listeners == null || !_listeners.Any())
{
return(false);
}
bool handled = false;
if (_previousPinchArgs != null)
{
foreach (var listener in _listeners)
{
if (listener.HandlesPinching || listener.HandlesPinched)
{
PinchEventArgs args = new AndroidPinchEventArgs(ev, coords, _previousPinchArgs, _view, _viewLocationAtOnDown);
args.Listener = listener;
listener.OnPinched(args);
handled |= args.Handled;
//if (args.Handled)
// break;
}
}
_previousPinchArgs = null;
}
return(handled);
}
public iOSPinchEventArgs(UIGestureRecognizer gr, PinchEventArgs previous, CoreGraphics.CGPoint locationAtStart)
{
Cancelled = (gr.State == UIGestureRecognizerState.Cancelled || gr.State == UIGestureRecognizerState.Failed);
ViewPosition = iOSEventArgsHelper.GetViewPosition(gr.View.Frame);
Touches = iOSEventArgsHelper.GetTouches(gr, 2, previous, locationAtStart);
base.CalculateScales(previous);
}
public iOSPinchEventArgs(UIGestureRecognizer gr, PinchEventArgs previous)
{
Cancelled = (gr.State == UIGestureRecognizerState.Cancelled || gr.State == UIGestureRecognizerState.Failed);
ElementPosition = gr.View.BoundsInFormsCoord();
ElementTouches = iOSEventArgsHelper.GetTouches(gr, gr.View, 2, previous);
WindowTouches = iOSEventArgsHelper.GetTouches(gr, null, 2, previous);
CalculateScales(previous);
}
/// <summary>
/// [メソッド]
/// ピンチイベントハンドラを実行する
/// </summary>
/// <param name="e">イベントデータ</param>
protected virtual void OnPinch(PinchEventArgs e)
{
this.hasPinched = true;
if (Pinch != null)
{
Pinch(this, e);
}
}
private void FirePinchEvent(float dist_diff)
{
var args = new PinchEventArgs(trackedFinger1, trackedFinger2, dist_diff);
if (onPinchSpread != null)
{
onPinchSpread(this, args);
}
}
private void CanvasDetails_PinchStarted(object sender, PinchEventArgs args)
{
args.Handled = true;
this.pinchStartWidth = (int)this.imageDetails.Width;
this.pinchStartHeight = (int)this.imageDetails.Height;
this.RaiseGestureChanged("Pinch");
}
private string PinchInfo(string eventName, PinchEventArgs e)
{
StringBuilder sb = new StringBuilder(eventName);
sb.Append($" {GetElementName(e)} with {e.NumberOfTouches} fingers");
sb.Append($", DeltaScale = {e.DeltaScale:F}");
sb.Append($", Center = {e.Center.X:F}/{e.Center.Y:F}");
AddTouches(sb, e);
return(sb.ToString());
}
void OnPinching(object sender, PinchEventArgs e)
{
if (e.State == GestureState.Ended)
{
DisplayAlert("Pinched", $"You pinched.", "OK");
GestureStatus.Text = "";
return;
}
GestureStatus.Text = $"{e.Scale},{e.Origin}";
}
private string PinchInfo(string eventName, PinchEventArgs e)
{
StringBuilder sb = new StringBuilder(eventName);
sb.Append($" {GetElementName(e)} with {e.NumberOfTouches} fingers\n");
sb.Append($" DeltaScale = {e.DeltaScale:F}");
sb.Append($", DeltaScaleX = {e.DeltaScaleX:F}");
sb.Append($", DeltaScaleY = {e.DeltaScaleY:F}\n");
sb.Append($" TotalScale = {e.TotalScale:F}");
sb.Append($", TotalScaleX = {e.TotalScaleX:F}");
sb.Append($", TotalScaleY = {e.TotalScaleY:F}\n");
sb.Append($" Center = {e.Center.X:F}/{e.Center.Y:F}");
AddTouches(sb, e);
if (e.Cancelled)
{
sb.Append(", Cancelled=true");
}
return(sb.ToString());
}
/// <summary>
/// [内部メソッド]
/// 「ピンチ」イベントを実行する
/// </summary>
/// <param name="touchPoint1">接触点1</param>
/// <param name="touchPoint2">接触点2</param>
private void executePinchEvent(TouchPoint touchPoint1, TouchPoint touchPoint2)
{
// 接触点1と接触点2の距離から「ピンチ」イベントハンドラを実行するか
int distance = Calculator.CalcurateDistance(touchPoint1.X, touchPoint1.Y, touchPoint2.X, touchPoint2.Y);
if (Math.Abs(this.baseTwoTouchDistanceCentiPixel - distance) < pinchIntervalCentiPixel)
{
return;
}
// 接触点1と接触点2の角度を計算する
int angle = Calculator.CalculateAngle(touchPoint1.X, touchPoint1.Y, touchPoint2.X, touchPoint2.Y);
// 基準となる距離と接触点1,2の距離からピンチ区分を決定する
PinchType type = Calculator.DistanceToPinchType(this.baseTwoTouchDistanceCentiPixel, distance);
// 「ピンチ」イベントハンドラを実行する
var pinchData = new PinchData(touchPoint1, touchPoint2, angle, this.baseTwoTouchDistanceCentiPixel, distance, type);
var peArgs = new PinchEventArgs(pinchData);
OnPinch(peArgs);
this.baseTwoTouchDistanceCentiPixel = distance;
}
private void OnPinchSpread(object sender, PinchEventArgs e)
{
float scale = e.DistanceDiff / Screen.dpi * scaleSpeed;
Camera.main.orthographicSize = Mathf.Clamp(Camera.main.orthographicSize + scale, 5, 8.4f);
}
void OnPinchAndRotate(UIGestureRecognizer gr)
{
if (touchCount == 0)
{
touchCount++;
}
PinchEventArgs pinchEventArgs = new iOSPinchEventArgs(gr, _previousPinchArgs);
RotateEventArgs rotateEventArgs = new iOSRotateEventArgs(gr, _previousRotateArgs);
if (gr.State == UIGestureRecognizerState.Ended || gr.State == UIGestureRecognizerState.Cancelled || gr.State == UIGestureRecognizerState.Failed)
{
if (_previousPinchArgs == null && _previousRotateArgs == null)
{
return;
}
foreach (var listener in _listeners)
{
if (listener.HandlesPinching || listener.HandlesPinched)
{
pinchEventArgs.Listener = listener;
listener.OnPinched(pinchEventArgs);
if (pinchEventArgs.Handled)
{
break;
}
}
}
foreach (var listener in _listeners)
{
if (listener.HandlesRotating || listener.HandlesRotated)
{
rotateEventArgs.Listener = listener;
listener.OnRotated(rotateEventArgs);
if (rotateEventArgs.Handled)
{
break;
}
}
}
_previousPinchArgs = null;
_previousRotateArgs = null;
_pinching = false;
_rotating = false;
_panning = false;
_longPressing = false;
}
else
{
foreach (var listener in _listeners)
{
if (listener.HandlesPinching)
{
pinchEventArgs.Listener = listener;
listener.OnPinching(pinchEventArgs);
if (pinchEventArgs.Handled)
{
break;
}
}
}
foreach (var listener in _listeners)
{
if (listener.HandlesRotating)
{
rotateEventArgs.Listener = listener;
listener.OnRotating(rotateEventArgs);
if (rotateEventArgs.Handled)
{
break;
}
}
}
_previousPinchArgs = pinchEventArgs;
_previousRotateArgs = rotateEventArgs;
}
}
private void CanvasDetails_PinchFinished(object sender, PinchEventArgs args)
{
args.Handled = true;
}
private void CanvasDetails_Pinch(object sender, PinchEventArgs args)
{
args.Handled = true;
this.DoPinch(args.Factor);
}
protected virtual void OnPinched(PinchEventArgs e)
{
AddText(PinchInfo("Pinched", e));
}
protected virtual void OnPinched(PinchEventArgs e)
{
AddText("Pinched " + GetElementName(e) + " with " + e.NumberOfTouches + " fingers, scale=" + e.DeltaScale + ", Center =" + e.Center.X + "/" + e.Center.Y);
}
protected virtual void OnPinching(PinchEventArgs e)
{
//AddText(PinchInfo("Pinching", e));
}
void OnPinchAndRotate(UIGestureRecognizer gr)
{
PinchEventArgs pinchEventArgs = new iOSPinchEventArgs(gr, _previousPinchArgs, _viewLocationAtOnDown);
RotateEventArgs rotateEventArgs = new iOSRotateEventArgs(gr, _previousRotateArgs, _viewLocationAtOnDown);
if (touchCount == 0)
{
//System.Diagnostics.Debug.WriteLine("onPinchAndRotate set _viewLocationAtOnDown");
_viewLocationAtOnDown = ViewLocationInWindow(gr.View);
touchCount++;
}
bool handled = false;
if (gr.State == UIGestureRecognizerState.Ended || gr.State == UIGestureRecognizerState.Cancelled || gr.State == UIGestureRecognizerState.Failed)
{
if (_previousPinchArgs == null && _previousRotateArgs == null)
{
return;
}
foreach (var listener in _listeners)
{
//if (handled)
// break;
if (listener.HandlesPinching || listener.HandlesPinched)
{
var taskArgs = new PinchEventArgs(pinchEventArgs);
taskArgs.Listener = listener;
listener.OnPinched(taskArgs);
if (taskArgs.Handled)
{
break;
}
}
}
foreach (var listener in _listeners)
{
//if (handled)
// break;
if (listener.HandlesRotating || listener.HandlesRotated)
{
var taskArgs = new RotateEventArgs(rotateEventArgs);
taskArgs.Listener = listener;
listener.OnRotated(taskArgs);
if (taskArgs.Handled)
{
break;
}
}
}
//gr.CancelsTouchesInView = handled;
_previousPinchArgs = null;
_previousRotateArgs = null;
_pinching = false;
_rotating = false;
_panning = false;
_longPressing = false;
}
else
{
foreach (var listener in _listeners)
{
if (listener.HandlesPinching)
{
var taskArgs = new PinchEventArgs(pinchEventArgs);
taskArgs.Listener = listener;
listener.OnPinching(taskArgs);
handled = handled || pinchEventArgs.Handled;
if (taskArgs.Handled)
{
break;
}
}
}
foreach (var listener in _listeners)
{
if (listener.HandlesRotating)
{
var taskArgs = new RotateEventArgs(rotateEventArgs);
taskArgs.Listener = listener;
listener.OnRotating(taskArgs);
handled = handled || rotateEventArgs.Handled;
if (taskArgs.Handled)
{
break;
}
}
}
_previousPinchArgs = pinchEventArgs;
_previousRotateArgs = rotateEventArgs;
}
/*
* foreach (var listener in _listeners)
* {
* //if (handled)
* // break;
* if (gr.State != UIGestureRecognizerState.Ended && gr.State != UIGestureRecognizerState.Cancelled && gr.State != UIGestureRecognizerState.Failed)
* {
* if (listener.HandlesPinching)
* {
* var taskArgs = new PinchEventArgs(pinchEventArgs);
* taskArgs.Listener = listener;
* listener.OnPinching(taskArgs);
* handled = handled || pinchEventArgs.Handled;
* if (taskArgs.Handled)
* break;
* }
* }
* }
* foreach (var listener in _listeners)
* {
* //if (handled)
* // break;
* if (gr.State != UIGestureRecognizerState.Ended && gr.State != UIGestureRecognizerState.Cancelled && gr.State != UIGestureRecognizerState.Failed)
* {
* if (listener.HandlesRotating)
* {
* var taskArgs = new RotateEventArgs(rotateEventArgs);
* taskArgs.Listener = listener;
* listener.OnRotating(taskArgs);
* handled = handled || rotateEventArgs.Handled;
* if (taskArgs.Handled)
* break;
* }
* }
* }
* _previousPinchArgs = pinchEventArgs;
* _previousRotateArgs = rotateEventArgs;
* //gr.CancelsTouchesInView = handled;
* if (handled)
* return;
* if (_previousPinchArgs == null && _previousRotateArgs == null)
* return;
* foreach (var listener in _listeners)
* {
* //if (handled)
* // break;
* if (listener.HandlesPinching || listener.HandlesPinched)
* {
* var taskArgs = new PinchEventArgs(pinchEventArgs);
* taskArgs.Listener = listener;
* listener.OnPinched(taskArgs);
* if (taskArgs.Handled)
* break;
* }
* }
* foreach (var listener in _listeners)
* {
* //if (handled)
* // break;
* if (listener.HandlesRotating || listener.HandlesRotated)
* {
* var taskArgs = new RotateEventArgs(rotateEventArgs);
* taskArgs.Listener = listener;
* listener.OnRotated(taskArgs);
* if (taskArgs.Handled)
* break;
* }
* }
* //gr.CancelsTouchesInView = handled;
* _previousPinchArgs = null;
* _previousRotateArgs = null;
* _pinching = false;
* _rotating = false;
* _panning = false;
* _longPressing = false;
*/
}
protected virtual void OnPinched(PinchEventArgs e)
{
AddText("Pinched " + GetElementName(e) + " with " + e.NumberOfTouches + " fingers, scale=" + e.DeltaScale + ", Center =" + e.Center.X + "/" + e.Center.Y);
}
public AndroidPinchEventArgs(MotionEvent current, MotionEvent.PointerCoords[] coords, PinchEventArgs previous, View view, Listener listener)
{
Listener = listener;
Cancelled = (current.Action == MotionEventActions.Cancel);
ElementPosition = VisualElementExtensions.BoundsInWindowCoord(listener.Element);
ElementTouches = AndroidEventArgsHelper.GetTouches(coords, previous, view, listener);
WindowTouches = AndroidEventArgsHelper.GetTouches(coords, previous, view, null);
//WindowTouches = AndroidEventArgsHelper.GetRawTouches(current);
CalculateScales(previous);
}
public AndroidPinchEventArgs(MotionEvent current, MotionEvent.PointerCoords[] coords, PinchEventArgs previous, View view, int[] startLocation)
{
Cancelled = (current.Action == MotionEventActions.Cancel);
ViewPosition = AndroidEventArgsHelper.GetViewPosition(view);
Touches = AndroidEventArgsHelper.GetTouches(coords, previous, view, startLocation);
CalculateScales(previous);
}
