/// <summary>
/// Indexs the path at point.
/// </summary>
/// <returns>The path at point.</returns>
/// <param name="listView">List view.</param>
/// <param name="p">P.</param>
public Tuple <int, int> IndexPathAtPoint(Xamarin.Forms.ListView listView, Xamarin.Forms.Point p)
{
var renderer = Renderer(listView);
var point = new CoreGraphics.CGPoint(p.X * Display.Scale, p.Y * Display.Scale);
//System.Diagnostics.Debug.WriteLine("size=["+renderer.Control.Frame.Size+"]");
//System.Diagnostics.Debug.WriteLine("point=["+point+"]");
var visibleCells = renderer.Control.VisibleCells;
var visibleCellIndexPaths = renderer.Control.IndexPathsForVisibleRows;
var scroll = renderer.Control.ContentOffset;
//System.Diagnostics.Debug.WriteLine("Scroll=["+scroll+"]");
foreach (var ip in visibleCellIndexPaths)
{
var cell = renderer.Control.CellAt(ip);
var frame = cell.Frame;
var frameX = cell.ConvertRectToView(frame, renderer.Control);
var frameZ = new CoreGraphics.CGRect(frameX.X - scroll.X * Display.Scale, frameX.Y - scroll.Y * Display.Scale, frameX.Width * Display.Scale, frameX.Height * Display.Scale);
//System.Diagnostics.Debug.WriteLine("ip=["+ip+"] frame=[" + frameZ + "]");
if (frameZ.Contains(point))
{
return(new Tuple <int, int>(ip.Section, ip.Row));
}
}
return(null);
//System.Diagnostics.Debug.WriteLine("");
//var indexPath = renderer.Control.IndexPathForRowAtPoint(point);
//return new Tuple<int, int>(indexPath.Section, indexPath.Row);
}
public override bool DispatchTouchEvent(MotionEvent e)
{
if (e.Action == MotionEventActions.Down)
{
_downTime = DateTime.UtcNow;
_downPosition = new Point(e.RawX, e.RawY);
}
if (e.Action != MotionEventActions.Up)
{
return(base.DispatchTouchEvent(e));
}
View currentFocus1 = ((Activity)Context).CurrentFocus;
bool flag = base.DispatchTouchEvent(e);
if (currentFocus1 is EditText)
{
View currentFocus2 = ((Activity)Context).CurrentFocus;
if (currentFocus1 == currentFocus2 && _downPosition.Distance(new Point(e.RawX, e.RawY)) <= Context.ToPixels(20.0) && !(DateTime.UtcNow - _downTime > TimeSpan.FromMilliseconds(200.0)))
{
int[] location = new int[2];
currentFocus1.GetLocationOnScreen(location);
float num1 = e.RawX + currentFocus1.Left - location[0];
float num2 = e.RawY + currentFocus1.Top - location[1];
if (!new Rectangle(currentFocus1.Left, currentFocus1.Top, currentFocus1.Width, currentFocus1.Height).Contains(num1, num2))
{
Context.HideKeyboard(currentFocus1);
RequestFocus();
currentFocus1.ClearFocus();
}
}
}
return(flag);
}
private void Joystick_Pan(Xamarin.Forms.Point point)
{
var newStickX = (float)(_stickX + point.X);
var newStickY = (float)(_stickY + point.Y);
var stickAngle = MathHelper.Angle(new SKPoint(_originX, _originY), new SKPoint(newStickX, newStickY));
var distance = MathHelper.Distance(new SKPoint(_originX, _originY), new SKPoint(newStickX, newStickY));
if (distance > _areaRadius * .5f)
{
_stickX = (float)Math.Cos(stickAngle) * _areaRadius * .5f + _originX;
_stickY = (float)Math.Sin(stickAngle) * _areaRadius * .5f + _originY;
distance = _areaRadius * .5f;
}
else
{
_stickX = newStickX;
_stickY = newStickY;
}
_tiltX = (float)Math.Cos(stickAngle) * distance / (_areaRadius * .5f);
_tiltY = (float)Math.Sin(stickAngle) * distance / (_areaRadius * .5f);
Tilt = new Point(_tiltX, _tiltY);
TiltChanged?.Invoke(new SKPoint(_tiltX, _tiltY));
}
public override bool DispatchTouchEvent(MotionEvent e)
{
if (e.Action == MotionEventActions.Down)
{
downTime = DateTime.UtcNow;
downPosition = new Xamarin.Forms.Point((double)e.RawX, (double)e.RawY);
}
if (e.Action != MotionEventActions.Up)
{
return(base.DispatchTouchEvent(e));
}
Android.Views.View currentFocus1 = ((Activity)Context).CurrentFocus;
bool flag = base.DispatchTouchEvent(e);
if (currentFocus1 is EditText)
{
Android.Views.View currentFocus2 = ((Activity)Context).CurrentFocus;
if (currentFocus1 == currentFocus2 && this.downPosition.Distance(new Xamarin.Forms.Point((double)e.RawX, (double)e.RawY)) <= ContextExtensions.ToPixels(Context, 20.0) && !(DateTime.UtcNow - downTime > TimeSpan.FromMilliseconds(200.0)))
{
int[] location = new int[2];
currentFocus1.GetLocationOnScreen(location);
float num1 = e.RawX + currentFocus1.Left - location[0];
float num2 = e.RawY + currentFocus1.Top - location[1];
if (!new Rectangle((double)currentFocus1.Left, (double)currentFocus1.Top, (double)currentFocus1.Width, (double)currentFocus1.Height).Contains((double)num1, (double)num2))
{
ContextExtensions.HideKeyboard(Context, currentFocus1);
RequestFocus();
currentFocus1.ClearFocus();
}
}
}
return(flag);
}
void OnUp(GestureMotionEvent e)
{
NumberOfTouches = e.PointerCount;
var tookTooLong = (DateTime.Now - _startTime).Milliseconds > MaxSwipeDuration;
var wrongAmountOfTouches = NumberOfTouches < SwipeGestureRecognizer.NumberOfTouchesRequired;
if (tookTooLong || wrongAmountOfTouches)
{
State = GestureRecognizerState.Failed;
SendGestureEvent();
PointerId = -1;
return;
}
var endTouchPoint = new Xamarin.Forms.Point(e.GetX(0), e.GetY(0));
double velocityX = endTouchPoint.X - FirstTouchPoint.X;
double velocityY = endTouchPoint.Y - FirstTouchPoint.Y;
var direction = GetSwipeDirection(velocityX, velocityY);
var expectedDirection = (Recognizer as SwipeGestureRecognizer).Direction;
if (direction == expectedDirection)
{
State = GestureRecognizerState.Recognized;
SendGestureEvent();
}
else
{
State = GestureRecognizerState.Failed;
Console.WriteLine("failed gesture was expecting {0} got {1}", expectedDirection, direction);
}
PointerId = -1;
}
public bool OnScale(ScaleGestureDetector detector)
{
//Debug.WriteLine("Control_PointerWheelChanged");
if (detector.PreviousSpan != detector.CurrentSpan)
{
double oldScale = Element.ViewScale;
// UWP delta とは逆値
double sclae = detector.PreviousSpan / detector.CurrentSpan;
if (sclae < 1)
{
Element.ViewScale = Element.ViewScale * (sclae * 1.1);
}
else if (sclae > 1)
{
Element.ViewScale = Element.ViewScale * (sclae / 1.1);
}
Xamarin.Forms.Point oldPoint = Element.ViewPoint.Offset(detector.FocusX / oldScale, detector.FocusY / oldScale);
Xamarin.Forms.Point newPoint = Element.ViewPoint.Offset(detector.FocusX / Element.ViewScale, detector.FocusY / Element.ViewScale);
Element.ViewPoint = Element.ViewPoint.Offset(oldPoint.X - newPoint.X, oldPoint.Y - newPoint.Y);
DrawImage = Element.DrawImmageRequest(Element.ViewPoint, Matrix2.Enlargement(ViewSize, 1 / Element.ViewScale, 1 / Element.ViewScale));
Invalidate();
}
return(true);
}
private void OnStop(object sender, ManipulationCompletedRoutedEventArgs e)
{
if (Element is CarouselLayout layout && _touchDown && layout.IsPanEnabled)
{
double swipeVelocityTreshlod = 0.3;
Xamarin.Forms.Point delta = GetPositionDelta(_start, e.Position);
if (Math.Abs(e.Velocities.Linear.X) > swipeVelocityTreshlod)
{
layout.OnPanUpdated(layout, new PanUpdatedEventArgs(GestureStatus.Canceled, 1, -delta.X, -delta.Y));
}
else
{
layout.OnPanUpdated(layout, new PanUpdatedEventArgs(GestureStatus.Completed, 1, -delta.X, -delta.Y));
}
if (e.Velocities.Linear.X > swipeVelocityTreshlod)
{
layout.OnSwiped(SwipeDirection.Right, Math.Abs(e.Velocities.Linear.X));
}
else if (e.Velocities.Linear.X < -swipeVelocityTreshlod)
{
layout.OnSwiped(SwipeDirection.Left, Math.Abs(e.Velocities.Linear.X));
}
e.Handled = true;
}
_touchDown = false;
_firstLayout = null;
}
protected override void OnDraw(Canvas canvas)
{
base.OnDraw(canvas);
int size = Element.pointList.Count;
paint.StrokeWidth = 6;
paint.AntiAlias = true;
for (int i = 0; i < size; i++)//绘制元素点图
{
Point item = Element.pointList.ElementAt(i);
paint.Color = Android.Graphics.Color.Blue;
paint.SetStyle(Paint.Style.Fill); //设置为实心
canvas.DrawCircle((int)item.X, (int)item.Y, Element.Circle_r, paint);
paint.SetStyle(Paint.Style.Stroke); //设置为空心
canvas.DrawCircle((int)item.X, (int)item.Y, Element.Circle_R, paint);
}
size = Element.drawList.Count;
for (int i = 0; i < size; i++)//绘制选中点图
{
Point item = Element.drawList.ElementAt(i);
paint.Color = Android.Graphics.Color.Red;
paint.SetStyle(Paint.Style.Fill);//设置为实心
canvas.DrawCircle((int)item.X, (int)item.Y, Element.Circle_r, paint);
if (i < size - 1)
{
Point item2 = Element.drawList.ElementAt(i + 1);
paint.Color = Android.Graphics.Color.Red;
canvas.DrawLine((int)item.X, (int)item.Y, (int)item2.X, (int)item2.Y, paint);
paint.SetStyle(Paint.Style.Stroke);//设置为空心
canvas.DrawCircle((int)item.X, (int)item.Y, Element.Circle_R, paint);
}
}
}
void OnDown (GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
State = GestureRecognizerState.Began;
// State = (e.PointerCount == SwipeGestureRecognizer.NumberOfTouchesRequired) ? GestureRecognizerState.Began : GestureRecognizerState.Failed;
FirstTouchPoint = new Xamarin.Forms.Point (e.GetX (0), e.GetY (0));
_startTime = DateTime.Now;
}
void OnDown(GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
State = GestureRecognizerState.Began;
// State = (e.PointerCount == SwipeGestureRecognizer.NumberOfTouchesRequired) ? GestureRecognizerState.Began : GestureRecognizerState.Failed;
FirstTouchPoint = new Xamarin.Forms.Point(e.GetX(0), e.GetY(0));
_startTime = DateTime.Now;
}
IFeature[] GetFeaturesAroundPoint(Point point, double radius, string[] layers)
{
var output = new List <IFeature>();
RectF rect = point.ToRect(Context.ToPixels(radius));
var listFeatures = map.QueryRenderedFeatures(rect, layers);
return(listFeatures.Select(x => x.ToFeature())
.Where(x => x != null)
.ToArray());
}
public static Point GetNativeScreenPosition(this BindableObject bindableObject)
{
var view = bindableObject.GetNativeView ();
var point = Point.Zero;
if (view != null) {
int[] location = new int[2];
view.GetLocationOnScreen (location);
point = new Xamarin.Forms.Point (location [0], location [1]);
}
return point;
}
private void OverlayViewRenderer_Tap(object sender, GestureEventArgs e)
{
var tappableView = Element as TappableView;
if (tappableView != null)
{
var nativePoint = e.GetPosition(this);
var xfPoint = new Xamarin.Forms.Point(nativePoint.X, nativePoint.Y);
tappableView.OnTap(xfPoint);
}
}
private void _tapGetsureListener_SingleTap(object sender, MotionEvent e)
{
if (Element == null)
{
return;
}
float scale = Resources.System.DisplayMetrics.Density;
Xamarin.Forms.Point pt = new Xamarin.Forms.Point((e.GetX() / scale), (e.GetY() / scale));
(Element as MyCarouselViewControl).LastTapPosition = pt;
}
void OnDown (GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
State = (e.PointerCount == TapGestureRecognizer.NumberOfTouchesRequired) ? GestureRecognizerState.Began : GestureRecognizerState.Failed;
_currentTapCount = 0;
//TODO track all pointers that are down.
PointerId = e.GetPointerId (0);
FirstTouchPoint = new Xamarin.Forms.Point (e.GetX (0), e.GetY (0));
if (TapGestureRecognizer.NumberOfTapsRequired > 1 && State == GestureRecognizerState.Began) {
ResetMultiTapTimer (true);
}
}
void OnDown(GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
State = (e.PointerCount == TapGestureRecognizer.NumberOfTouchesRequired) ? GestureRecognizerState.Began : GestureRecognizerState.Failed;
_currentTapCount = 0;
//TODO track all pointers that are down.
PointerId = e.GetPointerId(0);
FirstTouchPoint = new Xamarin.Forms.Point(e.GetX(0), e.GetY(0));
if (TapGestureRecognizer.NumberOfTapsRequired > 1 && State == GestureRecognizerState.Began)
{
ResetMultiTapTimer(true);
}
}
void OnDown (GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
if (e.PointerCount == LongPressGestureRecognizer.NumberOfTouchesRequired) {
State = GestureRecognizerState.Began;
PointerId = e.GetPointerId (0);
FirstTouchPoint = new Xamarin.Forms.Point (e.GetX (0), e.GetY (0));
ResetLongPressTimer (true);
} else {
State = GestureRecognizerState.Failed;
}
}
public static Point GetNativeScreenPosition(this VisualElement element)
{
var view = element.GetNativeView();
var point = Point.Zero;
if (view != null)
{
int[] location = new int[2];
view.GetLocationOnScreen(location);
point = new Xamarin.Forms.Point(location[0], location[1]);
}
return(point);
}
void GetScrollPosition(object obj)
{
var func = obj as Func <Point, object>;
if (func == null)
{
return;
}
var point = new Point(_recyclerView.GetHorizontalScrollOffset() / _density,
_recyclerView.GetVerticalScrollOffset() / _density);
func.Invoke(point);
}
public static Point GetNativeScreenPosition(this VisualElement element)
{
var view = element.GetNativeView();
var point = Point.Zero;
if (view != null)
{
int[] location = new int[2];
var p = view.TransformToVisual((UIElement)view.Parent).TransformPoint(new Windows.Foundation.Point(0.0, 0.0));
point = new Xamarin.Forms.Point(location[0], location[1]);
}
return(point);
}
private void OnMove(object sender, ManipulationDeltaRoutedEventArgs e)
{
if (Element is CarouselLayout layout && _touchDown && layout.IsPanEnabled)
{
if (_firstLayout != null && layout != _firstLayout)
{
return;
}
Xamarin.Forms.Point delta = GetPositionDelta(_start, e.Position);
layout.OnPanUpdated(layout, new PanUpdatedEventArgs(GestureStatus.Running, 1, -delta.X, -delta.Y));
e.Handled = true;
}
}
public virtual void OnClick(global::Android.Views.View view)
{
var touchPosition = new Xamarin.Forms.Point(downX / density, downY / density);
long currentTouchTime = Java.Lang.JavaSystem.CurrentTimeMillis();
if (previousClickTime == 0 || (currentTouchTime - previousClickTime > 250))
{
previousClickTime = currentTouchTime;
if (previousClickTime != 0 && TransparentPageElement != null)
{
TransparentPageElement.RaiseItemClicked(touchPosition);
}
}
}
private void btn_Delete_Click(object sender, EventArgs e)
{
string strHex = lblSelected.Text;
ColorCode colorcd = new ColorCode();
foreach (ImageColorInfo info in qList)
{
if (info.HEXValue.Equals(strHex))
{
qList.Remove(info);
break;
}
}
_point = new Xamarin.Forms.Point(0.0, 0.0);
lastXMove = lastXMoveBak;
lastYMove = lastYMoveBak;
if (qList.Count > 0)
{
string hex = qList[qList.Count - 1].HEXValue;
btnColor.BackgroundColor = Xamarin.Forms.Color.FromHex(hex);
lblSelected.Text = hex;
lblHex.Text = hex;
Rgb rgb = colorcd.getRgb(hex);
lblRgb.Text = colorcd.getRgbString(rgb);
lblHsl.Text = colorcd.getHslString(rgb);
lblHsv.Text = colorcd.getHsvString(rgb);
lblCmyk.Text = colorcd.getCmykString(rgb);
lblLab.Text = colorcd.getLabString(rgb);
lblMunsell.Text = colorcd.getMunsellString(rgb);
lblPccs.Text = colorcd.getPCCSTone(rgb);
lblJis.Text = JisUtil.getJisByMunsell(lblMunsell.Text);
}
else
{
btnColor.BackgroundColor = Xamarin.Forms.Color.White;
lblSelected.Text = string.Empty;
lblHex.Text = string.Empty;
lblRgb.Text = string.Empty;
lblHsl.Text = string.Empty;
lblHsv.Text = string.Empty;
lblCmyk.Text = string.Empty;
lblLab.Text = string.Empty;
lblMunsell.Text = string.Empty;
lblPccs.Text = string.Empty;
lblJis.Text = string.Empty;
}
// カンバス更新
canvasView.InvalidateSurface();
}
public static Xamarin.Forms.Point[] GetTouches(UIGestureRecognizer gestureRecognizer, CGPoint locationAtStart)
{
nint numberOfTouches = gestureRecognizer.NumberOfTouches;
var array = new Xamarin.Forms.Point[numberOfTouches];
for (int i = 0; i < numberOfTouches; i++)
{
//var viewPoint = gestureRecognizer.LocationOfTouch(i, gestureRecognizer.View);
//var windowPoint = gestureRecognizer.View.ConvertPointToView (viewPoint, null);
var windowPoint = gestureRecognizer.LocationOfTouch(i, null);
array[i] = new Xamarin.Forms.Point(windowPoint.X - locationAtStart.X, windowPoint.Y - locationAtStart.Y);
}
return(array);
}
void OnDown(GestureMotionEvent e)
{
//TODO - should really be possible until all taps/fingers are satisfied.
if (e.PointerCount == LongPressGestureRecognizer.NumberOfTouchesRequired)
{
State = GestureRecognizerState.Began;
PointerId = e.GetPointerId(0);
FirstTouchPoint = new Xamarin.Forms.Point(e.GetX(0), e.GetY(0));
ResetLongPressTimer(true);
}
else
{
State = GestureRecognizerState.Failed;
}
}
protected void OnElementPropertyChanged(object sender, PropertyChangedEventArgs e)
{
if (e.PropertyName == ExtendedScrollView.PositionProperty.PropertyName)
{
ExtendedScrollView sv = (ExtendedScrollView)Element;
Point pt = sv.Position;
if (System.Math.Abs(this.Bounds.Location.Y - pt.Y) < EPSILON &&
System.Math.Abs(this.Bounds.Location.X - pt.X) < EPSILON)
{
return;
}
this.ScrollRectToVisible(
new RectangleF((float)pt.X, (float)pt.Y, Bounds.Width, Bounds.Height), sv.AnimateScroll);
}
}
async void OnScrollToRequested(object sender, ScrollToRequestedEventArgs e)
{
ClearRtlScrollCheck();
// Adding items into the view while scrolling to the end can cause it to fail, as
// the items have not actually been laid out and return incorrect scroll position
// values. The ScrollViewRenderer for Android does something similar by waiting up
// to 10ms for layout to occur.
int cycle = 0;
while (Element != null && !Element.IsInNativeLayout)
{
await Task.Delay(TimeSpan.FromMilliseconds(1));
cycle++;
if (cycle >= 10)
{
break;
}
}
if (Element == null)
{
return;
}
double x = e.ScrollX, y = e.ScrollY;
ScrollToMode mode = e.Mode;
if (mode == ScrollToMode.Element)
{
Point pos = Element.GetScrollPositionForElement((VisualElement)e.Element, e.Position);
x = pos.X;
y = pos.Y;
mode = ScrollToMode.Position;
}
if (mode == ScrollToMode.Position)
{
Control.ChangeView(x, y, null, !e.ShouldAnimate);
}
Element.SendScrollFinished();
}
private IEnumerable <View> ViewsContainingImpl(Point pt, List <View> views, ViewGroup root)
{
for (var i = 0; i < root.ChildCount; i++)
{
var child = root.GetChildAt(i);
var bounds = new Rect();
child.GetHitRect(bounds);
var ver = child as IVisualElementRenderer;
if (ver == null || !(ver.Element is View) || !bounds.Contains(Convert.ToInt32(pt.X), Convert.ToInt32(pt.Y)))
{
continue;
}
views.Add(ver.Element as View);
//check to see if this containing child has any other containing children
ViewsContainingImpl(pt, views, ver.ViewGroup);
}
return(views);
}
/**
* We have an issue with Android that makes it pretty much impossible to compose gestures.
* Below is my stab at picking up gestures from the activity - the idea is that the main activity would pass all touches to this method
* the system will work, and will work very richly (with delay touch, cancel touches, delegate callback for should
* recognize in parallel, etc)
* However, my time is limited, so this is crude for now.
*/
public void ProcessGestureMotionEvent(GestureMotionEvent gestureEvent)
{
var ev = gestureEvent.MotionEvent;
var nativeViewScreenLocation = Recognizer.View.GetNativeScreenPosition();
var offset = Xamarin.Forms.Point.Zero;
var touchPoint = new Xamarin.Forms.Point(ev.GetX(), ev.GetY());
var mainPointerId = ev.GetPointerId(0);
//1. is it inside the view?
// Console.WriteLine ("touch point {0} vlocs {1} vlocw {2}", touchPoint.PrettyPrint (), nativeViewScreenLocation.PrettyPrint (), nativeViewWindowLocation.PrettyPrint ());
// Console.WriteLine ("touch point {0} view bounds {1} size {2},{3}", touchPoint, nativeViewScreenLocation, NativeView.Width, NativeView.Height);
var isInsideOfView = touchPoint.X >= nativeViewScreenLocation.X && touchPoint.Y >= nativeViewScreenLocation.Y &&
touchPoint.X <= (NativeView.Width + nativeViewScreenLocation.X) && touchPoint.Y <= (NativeView.Height + nativeViewScreenLocation.Y);
//2. report touches inside, or outside but tracked? (so cancels can occur)
//TODO track more touches
if (isInsideOfView || PointerId == mainPointerId)
{
//if letting the view know, translate the coords into local view coords (apply the offsets to the touch)
offset.X = -nativeViewScreenLocation.X;
offset.Y = -nativeViewScreenLocation.Y;
ev.OffsetLocation((float)offset.X, (float)offset.Y);
var offsetLocation = new Xamarin.Forms.Point(ev.GetX(), ev.GetY());
if (isInsideOfView)
{
// Console.WriteLine ("INSIDE " + ev.Action + " offset " + offset.PrettyPrint () + " results in " + offsetLocation.PrettyPrint ());
}
else
{
// Console.WriteLine ("touch outside view, but was tracked " + offset);
}
//TODO - ask the view if it's happy to process this touch at the same time as another gesture - I see no way to make it work for views.. (without
//an entire Touch dispatching mechanism:/)
//that will be done by 2 parses - one to discover all *gestures* that want the touch, then another parse to go back through and either cancel
//or pass the touches long
//that's not implemented yet though (time)
ProcessMotionEvent(gestureEvent);
//remove the offset
ev.OffsetLocation((float)-offset.X, (float)-offset.Y);
}
// Console.WriteLine ("location " + ev.GetX () + ", " + ev.GetY () + " offset " + offset);
}
private void OnStart(object sender, ManipulationStartedRoutedEventArgs e)
{
if (Element is CarouselLayout layout && layout.IsPanEnabled)
{
if (_firstLayout != null && layout != _firstLayout)
{
return;
}
_firstLayout = layout;
_start = new Windows.Foundation.Point(e.Position.X, e.Position.Y);
Xamarin.Forms.Point delta = GetPositionDelta(_start, _start);
layout.OnPanUpdated(layout, new PanUpdatedEventArgs(GestureStatus.Started, 1, -delta.X, -delta.Y));
_touchDown = true;
e.Handled = true;
}
}
void OnUp (GestureMotionEvent e)
{
NumberOfTouches = e.PointerCount;
var tookTooLong = (DateTime.Now - _startTime).Milliseconds > MaxSwipeDuration;
var wrongAmountOfTouches = NumberOfTouches < SwipeGestureRecognizer.NumberOfTouchesRequired;
if (tookTooLong || wrongAmountOfTouches) {
State = GestureRecognizerState.Failed;
return;
}
var endTouchPoint = new Xamarin.Forms.Point (e.GetX (0), e.GetY (0));
double velocityX = endTouchPoint.X - FirstTouchPoint.X;
double velocityY = endTouchPoint.Y - FirstTouchPoint.Y;
var direction = GetSwipeDirection (velocityX, velocityY);
var expectedDirection = (Recognizer as SwipeGestureRecognizer).Direction;
if (direction == expectedDirection) {
State = GestureRecognizerState.Recognized;
} else {
State = GestureRecognizerState.Failed;
Console.WriteLine ("failed gesture was expecting {0} got {1}", expectedDirection, direction);
}
}
public static Xamarin.Forms.Point[] GetTouches(this UIGestureRecognizer gestureRecognizer, UIView view)
{
nint numberOfTouches = gestureRecognizer.NumberOfTouches;
var array = new Xamarin.Forms.Point[numberOfTouches];
for (int i = 0; i < numberOfTouches; i++)
{
/*
* if (view == null)
* {
* var page = Xamarin.Forms.Application.Current.MainPage;
* if (page is Xamarin.Forms.NavigationPage navPage)
* page = navPage.CurrentPage;
* if (Xamarin.Forms.Platform.iOS.Platform.GetRenderer(page) is Xamarin.Forms.Platform.iOS.IVisualElementRenderer renderer)
* view = renderer.NativeView;
* }
*/
var point = gestureRecognizer.LocationOfTouch(i, view);
array[i] = point.ToPoint();
}
return(array);
}
protected Xamarin.Forms.Point GetLocationInAncestorView(Xamarin.Forms.Point location, Xamarin.Forms.VisualElement view)
{
int[] nativeViewLocation = new int[2];
NativeView.GetLocationOnScreen(nativeViewLocation);
var nativeViewLocationOnScreen = new Xamarin.Forms.Point(nativeViewLocation [0], nativeViewLocation [1]);
var offsetLocation = new Xamarin.Forms.Point(location.X + nativeViewLocationOnScreen.X, location.Y + nativeViewLocationOnScreen.Y);
var targetViewRenderer = view.GetRenderer();
var targetView = targetViewRenderer.ViewGroup;
int[] targetViewLocation = new int[2];
targetView.GetLocationOnScreen(targetViewLocation);
var nativeViewScreenLocation = new Xamarin.Forms.Point(targetViewLocation [0], targetViewLocation [1]);
var returnPoint = offsetLocation;
returnPoint.X -= nativeViewScreenLocation.X;
returnPoint.Y -= nativeViewScreenLocation.Y;
// Console.WriteLine ("offsetLocation {0} nativeViewLocationOnScreen {1} returnPoint", offsetLocation, nativeViewLocationOnScreen);
// Console.WriteLine ("location {0} parentViewLoc {1} returnPoint {2}", location, nativeViewScreenLocation, returnPoint);
return(returnPoint);
}
public override bool DispatchTouchEvent(MotionEvent e)
{
if (e.Action == MotionEventActions.Down)
{
downTime = DateTime.UtcNow;
downPosition = new Xamarin.Forms.Point((double)e.RawX, (double)e.RawY);
}
if (e.Action != MotionEventActions.Up)
return base.DispatchTouchEvent(e);
Android.Views.View currentFocus1 = ((Activity) Context).CurrentFocus;
bool flag = base.DispatchTouchEvent(e);
if (currentFocus1 is EditText)
{
Android.Views.View currentFocus2 = ((Activity) Context).CurrentFocus;
if (currentFocus1 == currentFocus2 && this.downPosition.Distance(new Xamarin.Forms.Point((double)e.RawX, (double)e.RawY)) <= ContextExtensions.ToPixels(Context, 20.0) && !(DateTime.UtcNow - downTime > TimeSpan.FromMilliseconds(200.0)))
{
int[] location = new int[2];
currentFocus1.GetLocationOnScreen(location);
float num1 = e.RawX + currentFocus1.Left - location[0];
float num2 = e.RawY + currentFocus1.Top - location[1];
if (!new Rectangle((double)currentFocus1.Left, (double)currentFocus1.Top, (double)currentFocus1.Width, (double)currentFocus1.Height).Contains((double)num1, (double)num2))
{
ContextExtensions.HideKeyboard(Context, currentFocus1);
RequestFocus();
currentFocus1.ClearFocus();
}
}
}
return flag;
}
void DraggableViewRenderer_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
{
// Move drag visual
//
var x = Canvas.GetLeft(_dragVisual);
var y = Canvas.GetTop(_dragVisual);
_dragVisual.SetValue(Canvas.LeftProperty, x + e.DeltaManipulation.Translation.X);
_dragVisual.SetValue(Canvas.TopProperty, y + e.DeltaManipulation.Translation.Y);
var draggableView = Element as DraggableView;
if (draggableView != null)
{
var delta = e.CumulativeManipulation.Translation;
var pt = new Xamarin.Forms.Point(draggableView.Bounds.Center.X + delta.X,
draggableView.Bounds.Center.Y + delta.Y);
draggableView.OnDragging(pt);
}
e.Handled = true;
}
public PointerEventArgs(PointerEventType Type, Point Previous, Point Current, bool Down) : base()
{
this.Type = Type; this.Previous = Previous; this.Current = Current; PointerDown = Down;
}
void DraggableViewRenderer_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
{
var delta = e.TotalManipulation.Translation;
var draggableView = Element as DraggableView;
// Complete the drag
//
if (draggableView != null)
{
var pt = new Xamarin.Forms.Point(draggableView.Bounds.Center.X + delta.X,
draggableView.Bounds.Center.Y + delta.Y);
draggableView.OnDragged(pt);
ClearDragVisual();
}
e.Handled = true;
}
SKPoint ConvertToPixel(Xamarin.Forms.Point pt)
{
return(new SKPoint((float)(CanvasSize.Width * pt.X / Width),
(float)(CanvasSize.Height * pt.Y / Height)));
}
/// <summary>
///
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void OnTouchEffectAction(object sender, TouchActionEventArgs args)
{
try
{
var point = args.Location[0];
var id = args.Id;
switch (args.Type)
{
case TouchActionType.Pressed:
// 2指タッチ
if (args.PointerCount == 2)
{
touchId = args.Id;
pressPoint1 = args.Location[0];
pressPoint2 = args.Location[1];
pressTime = DateTime.Now;
lastFingerDis = distanceBetweenFingers(args);
_colorChanged = false;
}
else
{
_colorChanged = true;
}
break;
case TouchActionType.Moved:
if (args.PointerCount == 2)
{
TimeSpan ts1 = new TimeSpan(DateTime.Now.Ticks);
TimeSpan ts2 = new TimeSpan(pressTime.Ticks);
TimeSpan ts3 = ts1.Subtract(ts2);
double xMove1 = pressPoint1.X - args.Location[0].X;
double yMove1 = pressPoint1.Y - args.Location[0].Y;
double xMove2 = pressPoint2.X - args.Location[1].X;
double yMove2 = pressPoint2.Y - args.Location[1].Y;
if (!distanceBetweenFingers(xMove1, yMove1, xMove2, yMove2))
{
_colorChanged = false;
lastXMove = xMove1 + lastXMoveBak;
lastYMove = yMove1 + lastYMoveBak;
canvasView.InvalidateSurface();
}
else
{
iTime += (long)float.Parse(ts3.TotalMilliseconds.ToString());
if (iTime > 2000)
{
double fingerDis = distanceBetweenFingers(args);
if (fingerDis > lastFingerDis)
{
_colorChanged = false;
if (scaledRatio == double.Parse(dicConfig["scaledRatio1"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio2"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio2"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio3"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio3"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio4"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio4"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio5"]);
}
}
else
{
if (scaledRatio == double.Parse(dicConfig["scaledRatio5"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio4"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio4"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio3"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio3"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio2"]);
}
else if (scaledRatio == double.Parse(dicConfig["scaledRatio2"]))
{
scaledRatio = double.Parse(dicConfig["scaledRatio1"]);
}
_colorChanged = false;
}
iTime = 0;
canvasView.InvalidateSurface();
}
}
}
break;
case TouchActionType.Released:
if (args.PointerCount == 1)
{
if (_colorChanged)
{
if (point != _point)
{
_colorChanged = true;
_point = point;
canvasView.InvalidateSurface();
}
else
{
_colorChanged = false;
}
}
lastXMoveBak = lastXMove;
lastYMoveBak = lastYMove;
}
break;
case TouchActionType.Cancelled:
lastXMoveBak = lastXMove;
lastYMoveBak = lastYMove;
break;
}
}
catch (Exception ex)
{
}
}
protected Xamarin.Forms.Point GetLocationInAncestorView (Xamarin.Forms.Point location, Xamarin.Forms.VisualElement view)
{
int[] nativeViewLocation = new int[2];
NativeView.GetLocationOnScreen (nativeViewLocation);
var nativeViewLocationOnScreen = new Xamarin.Forms.Point (nativeViewLocation [0], nativeViewLocation [1]);
var offsetLocation = new Xamarin.Forms.Point (location.X + nativeViewLocationOnScreen.X, location.Y + nativeViewLocationOnScreen.Y);
var targetViewRenderer = view.GetRenderer ();
var targetView = targetViewRenderer.ViewGroup;
int[] targetViewLocation = new int[2];
targetView.GetLocationOnScreen (targetViewLocation);
var nativeViewScreenLocation = new Xamarin.Forms.Point (targetViewLocation [0], targetViewLocation [1]);
var returnPoint = offsetLocation;
returnPoint.X -= nativeViewScreenLocation.X;
returnPoint.Y -= nativeViewScreenLocation.Y;
// Console.WriteLine ("offsetLocation {0} nativeViewLocationOnScreen {1} returnPoint", offsetLocation, nativeViewLocationOnScreen);
// Console.WriteLine ("location {0} parentViewLoc {1} returnPoint {2}", location, nativeViewScreenLocation, returnPoint);
return returnPoint;
}
/**
* We have an issue with Android that makes it pretty much impossible to compose gestures.
* Below is my stab at picking up gestures from the activity - the idea is that the main activity would pass all touches to this method
* the system will work, and will work very richly (with delay touch, cancel touches, delegate callback for should
* recognize in parallel, etc)
* However, my time is limited, so this is crude for now.
*/
public void ProcessGestureMotionEvent (GestureMotionEvent gestureEvent)
{
var ev = gestureEvent.MotionEvent;
var nativeViewScreenLocation = Recognizer.View.GetNativeScreenPosition ();
var offset = Xamarin.Forms.Point.Zero;
var touchPoint = new Xamarin.Forms.Point (ev.GetX (), ev.GetY ());
var mainPointerId = ev.GetPointerId (0);
//1. is it inside the view?
// Console.WriteLine ("touch point {0} vlocs {1} vlocw {2}", touchPoint.PrettyPrint (), nativeViewScreenLocation.PrettyPrint (), nativeViewWindowLocation.PrettyPrint ());
// Console.WriteLine ("touch point {0} view bounds {1} size {2},{3}", touchPoint, nativeViewScreenLocation, NativeView.Width, NativeView.Height);
var isInsideOfView = touchPoint.X >= nativeViewScreenLocation.X && touchPoint.Y >= nativeViewScreenLocation.Y &&
touchPoint.X <= (NativeView.Width + nativeViewScreenLocation.X) && touchPoint.Y <= (NativeView.Height + nativeViewScreenLocation.Y);
//2. report touches inside, or outside but tracked? (so cancels can occur)
//TODO track more touches
if (isInsideOfView || PointerId == mainPointerId) {
//if letting the view know, translate the coords into local view coords (apply the offsets to the touch)
offset.X = -nativeViewScreenLocation.X;
offset.Y = -nativeViewScreenLocation.Y;
ev.OffsetLocation ((float)offset.X, (float)offset.Y);
var offsetLocation = new Xamarin.Forms.Point (ev.GetX (), ev.GetY ());
if (isInsideOfView) {
// Console.WriteLine ("INSIDE " + ev.Action + " offset " + offset.PrettyPrint () + " results in " + offsetLocation.PrettyPrint ());
} else {
// Console.WriteLine ("touch outside view, but was tracked " + offset);
}
//TODO - ask the view if it's happy to process this touch at the same time as another gesture - I see no way to make it work for views.. (without
//an entire Touch dispatching mechanism:/)
//that will be done by 2 parses - one to discover all *gestures* that want the touch, then another parse to go back through and either cancel
//or pass the touches long
//that's not implemented yet though (time)
ProcessMotionEvent (gestureEvent);
//remove the offset
ev.OffsetLocation ((float)-offset.X, (float)-offset.Y);
}
// Console.WriteLine ("location " + ev.GetX () + ", " + ev.GetY () + " offset " + offset);
}
