private void MTouch_Pinch(object sender, TouchPinchActionEventArgs args)
{
var zoomX = (float)args.Pinch.ZoomX;
var zoomY = (float)args.Pinch.ZoomY;
var Center = args.Pinch.Center;
Data.Axis.Zoom(zoomX, zoomY, (float)Center.X, (float)Center.Y);
}
private void MTouch_Pinch(object sender, TouchPinchActionEventArgs args)
{
var zoomX = (float)args.Pinch.ZoomX;
var zoomY = (float)args.Pinch.ZoomY;
var zoomCenter = args.Pinch.Center;
foreach (var Element in ChartElements)
{
if (Element.GetType() == typeof(ChartAxis))
{
var element = (Element as ChartAxis);
if (element.Orientation == ChartAxis.AxisOrientation.Horizontal)
{
element.Zoom(zoomX, zoomY, zoomCenter.ToSKPoint());
}
}
}
}
void ProcessCursor(TouchActionEventArgs args)
{
if (!Cursors.ContainsKey(args.ID))
{
Cursors.Add(args.ID, new TouchCursor(args.Location));
if (Cursors.Count >= 2)
{
Mode = TouchMode.Pinch;
}
}
else
{
var item1 = Cursors[args.ID];
TouchCursor item2 = item1;
foreach (var cursor in Cursors)
{
if (cursor.Key != args.ID)
{
item2 = cursor.Value;
}
}
var dx = args.Location.Position.X - item1.Position.X;
var dy = args.Location.Position.Y - item1.Position.Y;
item1.Position = args.Location.Position;
switch (Cursors.Count)
{
case 0:
Mode = TouchMode.Normal;
break;
case 1:
{
var temp = new TouchPanActionEventArgs(dx, dy);
var dist = temp.Distance;
if (dist > 0)
{
if (Mode == TouchMode.Pan || temp.Distance > GestureThreshold)
{
TapCancel();
Debug.WriteLine("Pan Enabled");
Mode = TouchMode.Pan;
Pan?.Invoke(this, temp);
}
}
} break;
case 2:
{
var temp = new TouchPinchActionEventArgs(PinchProcessor);
if (temp.Pinch.DistanceDelta >= 0)
{
Mode = TouchMode.Pinch;
if (PinchProcessor.Set(item1.Position, item2.Position))
{
TapCancel();
Pinch?.Invoke(this, temp);
}
}
} break;
default:
Debug.WriteLine("To many cursors.");
break;
}
}
}