onPanUpdate method
Implementation
void onPanUpdate(DragUpdateDetails details) {
widgetChannel?.send(<String, dynamic>{
"event": "panUpdate",
"widgetId": widget.valueKey,
"x": details.localPosition.dx,
"y": details.localPosition.dy,
"dx": details.delta.dx,
"dy": details.delta.dy
});
lastTouchPosition = details.localPosition;
Plotline.plotlineDebugLog("Pan update on ${widget.valueKey} $details ${details.localPosition.dx}");
}