// processing
private bool CommonHandler(object sender, SKTouchAction touchActionType, InputEventArgs evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as FrameworkElement;
// bail out if this view is not part the view hierarchy anymore
if (PresentationSource.FromVisual(view) == null)
{
return(false);
}
var id = GetId(evt);
var action = GetTouchAction(touchActionType, view, evt);
var mouse = GetMouseButton(evt);
var device = GetTouchDevice(evt);
var windowsPoint = GetPosition(evt, view);
var skPoint = scalePixels(windowsPoint.X, windowsPoint.Y);
var inContact = GetContact(evt);
var wheelDelta = evt is MouseWheelEventArgs wheelEvt ? wheelEvt.Delta : 0;
var args = new SKTouchEventArgs(id, action, mouse, device, skPoint, inContact, wheelDelta);
onTouchAction(args);
return(args.Handled);
}
private bool CommonHandler(object sender, SKTouchAction touchActionType, PointerRoutedEventArgs evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as FrameworkElement;
var id = evt.Pointer.PointerId;
var pointerPoint = evt.GetCurrentPoint(view);
var windowsPoint = pointerPoint.Position;
var skPoint = scalePixels(windowsPoint.X, windowsPoint.Y);
var mouse = GetMouseButton(pointerPoint);
var device = GetTouchDevice(evt);
var wheelDelta = pointerPoint?.Properties?.MouseWheelDelta ?? 0;
var args = new SKTouchEventArgs(id, touchActionType, mouse, device, skPoint, evt.Pointer.IsInContact, wheelDelta);
onTouchAction(args);
return(args.Handled);
}
private void OnTouch(object sender, View.TouchEventArgs e)
{
if (onTouchAction == null || scalePixels == null)
{
return;
}
var evt = e.Event;
var pointer = evt.ActionIndex;
var id = evt.GetPointerId(pointer);
var coords = scalePixels(evt.GetX(pointer), evt.GetY(pointer));
switch (evt.ActionMasked)
{
case MotionEventActions.Down:
case MotionEventActions.PointerDown:
{
var args = new SKTouchEventArgs(id, SKTouchAction.Pressed, coords, true);
onTouchAction(args);
e.Handled = args.Handled;
break;
}
case MotionEventActions.Move:
{
var count = evt.PointerCount;
for (pointer = 0; pointer < count; pointer++)
{
id = evt.GetPointerId(pointer);
coords = scalePixels(evt.GetX(pointer), evt.GetY(pointer));
var args = new SKTouchEventArgs(id, SKTouchAction.Moved, coords, true);
onTouchAction(args);
e.Handled = e.Handled || args.Handled;
}
break;
}
case MotionEventActions.Up:
case MotionEventActions.PointerUp:
{
var args = new SKTouchEventArgs(id, SKTouchAction.Released, coords, false);
onTouchAction(args);
e.Handled = args.Handled;
break;
}
case MotionEventActions.Cancel:
{
var args = new SKTouchEventArgs(id, SKTouchAction.Cancelled, coords, false);
onTouchAction(args);
e.Handled = args.Handled;
break;
}
}
}
private void SkCanvasView_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
if (e.ActionType == SkiaSharp.Views.Forms.SKTouchAction.Pressed)
{
_lastTouchPoint = e.Location;
e.Handled = true;
}
_lastTouchPoint = e.Location;
SkCanvasView.InvalidateSurface();
}
private bool FireEvent(SKTouchAction actionType, UITouch touch, bool inContact)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var id = touch.Handle.ToInt64();
var cgPoint = touch.LocationInView(View);
var point = new SKPoint((float)scalePixels(cgPoint.X), (float)scalePixels(cgPoint.Y));
var args = new SKTouchEventArgs(id, actionType, point, inContact);
onTouchAction(args);
return(args.Handled);
}
private void Chart_Touched(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
var chart = (CartesianChart)FindByName("chart");
var viewModel = (ViewModel)BindingContext;
// scales the UI coordintaes to the corresponging data in the chart.
// ScaleUIPoint retuns an array of double
var scaledPoint = chart.ScaleUIPoint(new LvcPoint(e.Location.X, e.Location.Y));
// where the X coordinate is in the first position
var x = scaledPoint[0];
// and the Y coordinate in the second position
var y = scaledPoint[1];
// finally add the new point to the data in our chart.
viewModel.Data.Add(new ObservablePoint(x, y));
}
void OnTouchEffectAction(System.Object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
switch (e.ActionType)
{
case SKTouchAction.Pressed:
if (!inProgressPaths.ContainsKey(e.Id))
{
SKPath path = new SKPath();
path.MoveTo(e.Location);
inProgressPaths.Add(e.Id, path);
canvasView.InvalidateSurface();
}
break;
case SKTouchAction.Moved:
if (inProgressPaths.ContainsKey(e.Id))
{
SKPath path = inProgressPaths[e.Id];
path.LineTo(e.Location);
canvasView.InvalidateSurface();
}
break;
case SKTouchAction.Released:
if (inProgressPaths.ContainsKey(e.Id))
{
completedPaths.Add(new DrawItem()
{
Path = inProgressPaths[e.Id],
Paint = DrawHelper.GetCurrentPaintObject(false, brushColourToBeUsed, brushThickness),
Area = areaUsed,
Name = brushName
});
inProgressPaths.Remove(e.Id);
canvasView.InvalidateSurface();
}
break;
}
e.Handled = true;
}
async void Handle_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
SKPoint touchLocation = e.Location;
float popOverWidth = (float)Math.Sqrt(2 * Math.Pow(Cake.PopOver.Radius, 2));
float minX = Cake.Center.X - 0.5f * popOverWidth;
float maxX = Cake.Center.X + 0.5f * popOverWidth;
float minY = Cake.Center.Y - 0.5f * popOverWidth;
float maxY = Cake.Center.X + 0.5f * popOverWidth;
minX *= Cake.Scale;
maxX *= Cake.Scale;
minY *= Cake.Scale;
maxY *= Cake.Scale;
bool insideX = touchLocation.X > minX && touchLocation.X < maxX;
bool insideY = touchLocation.Y > minY && touchLocation.Y < maxY;
if (insideX && insideY && Cake.CurrentlySelected != null)
{
await Navigation.PushAsync(new EmissionDetailsPage(Cake.CurrentlySelected.Emission));
}
else
{
PieceOfCake Slice = Cake.SelectPieceOfCake(e);
if (Slice != null)
{
//MainGrid.Children.RemoveAt(1);
//MainGrid.Children.Add(new EmissionHighlightView(Slice.Emission), 0, 0);
await Cake.AnimateSelection(Slice.Emission, 500);
Cake.CurrentlySelected = Slice;
}
else
{
Cake.CurrentlySelected = null;
}
Cake.CanvasView.InvalidateSurface();
}
}
private bool FireEvent(SKTouchAction actionType, SKMouseButton mouse, SKTouchDeviceType device, NSEvent mouseEvent, bool inContact)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var id = mouseEvent.ButtonNumber;
var cgPoint = LocationInView(View);
// flip the Y coordinate for macOS
cgPoint.Y = View.Bounds.Height - cgPoint.Y;
var point = new SKPoint((float)scalePixels(cgPoint.X), (float)scalePixels(cgPoint.Y));
var args = new SKTouchEventArgs(id, actionType, mouse, device, point, inContact);
onTouchAction(args);
return(args.Handled);
}
private bool CommonHandler(object sender, SKTouchAction touchActionType, MouseEventArgs evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as Control;
var id = 0L; // evt.Pointer.PointerId;
var windowsPoint = evt.Location;
var skPoint = new SKPoint((float)windowsPoint.X, (float)windowsPoint.Y);
var mouse = GetMouseButton(evt.Button);
var device = SKTouchDeviceType.Mouse; // GetTouchDevice(evt);
var args = new SKTouchEventArgs(id, touchActionType, mouse, device, skPoint, false /*evt.Pointer.IsInContact*/);
onTouchAction(args);
return(args.Handled);
}
// processing
private bool CommonHandler(object sender, SKTouchAction touchActionType, MouseEventArgs evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as Control;
var id = 1;
var action = touchActionType;
var mouse = GetMouseButton(evt);
var device = SKTouchDeviceType.Mouse;
var windowsPoint = evt.Location;
var skPoint = scalePixels(windowsPoint.X, windowsPoint.Y);
var inContact = GetContact(evt);
var args = new SKTouchEventArgs(id, action, mouse, device, skPoint, inContact);
onTouchAction(args);
return(args.Handled);
}
// processing
private bool CommonHandler(object sender, SKTouchAction touchActionType, InputEventArgs evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as FrameworkElement;
var id = GetId(evt);
var action = GetTouchAction(touchActionType, view, evt);
var mouse = GetMouseButton(evt);
var device = GetTouchDevice(evt);
var windowsPoint = GetPosition(evt, view);
var skPoint = scalePixels(windowsPoint.X, windowsPoint.Y);
var inContact = GetContact(evt);
var args = new SKTouchEventArgs(id, action, mouse, device, skPoint, inContact);
onTouchAction(args);
return(args.Handled);
}
// processing
private bool CommonHandler(object sender, SKTouchAction touchActionType, Event evt)
{
if (onTouchAction == null || scalePixels == null)
{
return(false);
}
var view = sender as Widget;
var id = GetId(evt);
var action = touchActionType;
var mouse = GetMouseButton(evt);
var device = GetTouchDevice(evt);
var windowsPoint = GetPosition(evt);
var skPoint = scalePixels(windowsPoint.X, windowsPoint.Y);
var inContact = GetContact(evt);
var wheelDelta = GetWheelDelta(evt);
var args = new SKTouchEventArgs(id, action, mouse, device, skPoint, inContact, wheelDelta);
onTouchAction(args);
return(args.Handled);
}
private void canvasView_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
if (e.ActionType == SKTouchAction.Pressed || e.ActionType == SKTouchAction.Moved)
{
if (e.Location.X >= width / 2)
{
right = true;
left = false;
}
else
{
right = false;
left = true;
}
}
else if (e.ActionType == SkiaSharp.Views.Forms.SKTouchAction.Released)
{
right = false;
left = false;
}
e.Handled = true;
}
private void SkCanvasView_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
try
{
var x = (int)(e.Location.X / scale.Width);
var y = (int)(e.Location.Y / scale.Height);
Console.WriteLine(Extensions.ToJSON(e, Formatting.None));
if (e.ActionType == SKTouchAction.Moved)
{
if (e.InContact)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr((int)MsgButtons.MK_LBUTTON),
(IntPtr)((y) << 16 | (x)));
}
else
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(),
(IntPtr)((y) << 16 | (x)));
}
}
if (e.ActionType == SKTouchAction.Pressed && e.MouseButton == SKMouseButton.Left)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
if (LastPressed.AddMilliseconds(500) > DateTime.Now && Math.Abs(LastPressedX - x) < 10 &&
Math.Abs(LastPressedY - y) < 10)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONDBLCLK, new IntPtr((int)MsgButtons.MK_LBUTTON),
(IntPtr)((y) << 16 | (x)));
LastPressed = DateTime.MinValue;
}
else
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONDOWN,
new IntPtr((int)MsgButtons.MK_LBUTTON), (IntPtr)((y) << 16 | (x)));
}
}
if (e.ActionType == SKTouchAction.Released && e.MouseButton == SKMouseButton.Left)
{
//XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr((int) MsgButtons.MK_LBUTTON), (IntPtr)((y) << 16 | (x)));
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONUP, new IntPtr((int)MsgButtons.MK_LBUTTON), (IntPtr)((y) << 16 | (x)));
LastPressed = DateTime.Now;
LastPressedX = x;
LastPressedY = y;
}
if (e.ActionType == SKTouchAction.Entered)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
}
if (e.ActionType == SKTouchAction.Exited)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
}
e.Handled = true;
} catch {}
}
private void SkCanvasView_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
try
{
var x = (int)(e.Location.X / scale.Width);
var y = (int)(e.Location.Y / scale.Height);
Console.WriteLine(Extensions.ToJSON(e, Formatting.None));
XplatUIMine.PaintPending = true;
if (e.ActionType == SKTouchAction.Moved)
{
if (touchDictionary.ContainsKey(e.Id))
{
if (Math.Abs(touchDictionary[e.Id].atdown.Location.X / scale.Width - x) > 5 &&
Math.Abs(touchDictionary[e.Id].atdown.Location.Y / scale.Height - y) > 5)
{
//Console.WriteLine("Mouse has moved");
touchDictionary[e.Id].hasmoved = true;
}
touchDictionary[e.Id].prev = touchDictionary[e.Id].now;
touchDictionary[e.Id].now = e;
}
if (touchDictionary.Count >= 2)
{
// Copy two dictionary keys into array
long[] keys = new long[touchDictionary.Count];
touchDictionary.Keys.CopyTo(keys, 0);
// Find index non-moving (pivot) finger
int pivotIndex = (keys[0] == e.Id) ? 1 : 0;
// Get the three points in the transform
SKPoint pivotPoint = touchDictionary[keys[pivotIndex]].atdown.Location;
SKPoint prevPoint = touchDictionary[e.Id].atdown.Location;
SKPoint newPoint = e.Location;
// Calculate two vectors
SKPoint oldVector = prevPoint - pivotPoint;
SKPoint newVector = newPoint - pivotPoint;
SKPoint center = (pivotPoint + prevPoint);
center.X /= 2;
center.Y /= 2;
// Find angles from pivot point to touch points
float oldAngle = (float)Math.Atan2(oldVector.Y, oldVector.X);
float newAngle = (float)Math.Atan2(newVector.Y, newVector.X);
float scale1 = Magnitude(newVector) / Magnitude(oldVector);
if (!float.IsNaN(scale1) && !float.IsInfinity(scale1))
{
//var centre = pivotPoint;
x = (int)(center.X / scale.Width);
y = (int)(center.Y / scale.Height);
Console.WriteLine("scale: {0} {1} {2}", scale, newVector.Length, oldVector.Length);
if (scale1 >= 2)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEWHEEL,
new IntPtr((int)(1) << 16),
(IntPtr)((y) << 16 | (x)));
touchDictionary[e.Id].atdown = e;
}
if (scale1 <= 0.5)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEWHEEL,
new IntPtr((int)(-1) << 16),
(IntPtr)((y) << 16 | (x)));
touchDictionary[e.Id].atdown = e;
}
}
e.Handled = true;
return;
}
if (e.InContact)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE,
new IntPtr((int)MsgButtons.MK_LBUTTON),
(IntPtr)((y) << 16 | (x)));
}
else
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(),
(IntPtr)((y) << 16 | (x)));
}
}
if (e.ActionType == SKTouchAction.Pressed && e.MouseButton == SKMouseButton.Left)
{
var now = DateTime.Now;
touchDictionary.Add(e.Id, new TouchInfo()
{
now = e, prev = e, DownTime = now, atdown = e
});
// right click handler
Device.StartTimer(TimeSpan.FromMilliseconds(1000), () =>
{
/*
* Console.WriteLine("Mouse rightclick check true={0} 1={1} {2} {3} {4}",
* touchDictionary.ContainsKey(e.Id),
* touchDictionary.Count,
* touchDictionary.ContainsKey(e.Id) ? touchDictionary[e.Id] : null, now, DateTime.Now);
*/
if (touchDictionary.ContainsKey(e.Id) && touchDictionary.Count == 1)
{
if (!touchDictionary[e.Id].hasmoved && touchDictionary[e.Id].DownTime == now)
{
touchDictionary[e.Id].wasright = true;
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_RBUTTONDOWN,
new IntPtr((int)MsgButtons.MK_RBUTTON), (IntPtr)((y) << 16 | (x)));
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_RBUTTONUP,
new IntPtr((int)MsgButtons.MK_RBUTTON), (IntPtr)((y) << 16 | (x)));
touchDictionary.Remove(e.Id);
return(false);
}
}
return(false);
});
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
if (LastPressed.AddMilliseconds(500) > DateTime.Now && Math.Abs(LastPressedX - x) < 20 &&
Math.Abs(LastPressedY - y) < 20)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONDBLCLK, new IntPtr((int)MsgButtons.MK_LBUTTON),
(IntPtr)((y) << 16 | (x)));
LastPressed = DateTime.MinValue;
}
else
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONDOWN,
new IntPtr((int)MsgButtons.MK_LBUTTON), (IntPtr)((y) << 16 | (x)));
}
}
if (e.ActionType == SKTouchAction.Released && e.MouseButton == SKMouseButton.Left)
{
if (touchDictionary.ContainsKey(e.Id) && touchDictionary[e.Id].wasright)
{
// no action here
}
else
{
// only up if we have seen the down
if (touchDictionary.ContainsKey(e.Id))
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_LBUTTONUP,
new IntPtr((int)MsgButtons.MK_LBUTTON), (IntPtr)((y) << 16 | (x)));
}
}
LastPressed = DateTime.Now;
LastPressedX = x;
LastPressedY = y;
touchDictionary.Remove(e.Id);
}
if (e.ActionType == SKTouchAction.Entered)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
touchDictionary.Clear();
}
if (e.ActionType == SKTouchAction.Cancelled)
{
touchDictionary.Clear();
}
if (e.ActionType == SKTouchAction.Exited)
{
XplatUI.driver.SendMessage(IntPtr.Zero, Msg.WM_MOUSEMOVE, new IntPtr(), (IntPtr)((y) << 16 | (x)));
touchDictionary.Clear();
}
e.Handled = true;
} catch {}
}
void ISKCanvasViewController.OnTouch(SKTouchEventArgs e)
{
OnTouch(e);
}
// the native view responds to a touch
protected virtual void OnTouch(SKTouchEventArgs e)
{
Touch?.Invoke(this, e);
}
private void ThisElement_Touch(object sender, SkiaSharp.Views.Forms.SKTouchEventArgs e)
{
Element.StartClick(e.Location.X, e.Location.Y);
}
