registerOnPinch method

void registerOnPinch(
  1. PinchCallback? pinchCallback
)

Two pointers pinch event.

Parameters

A two pointers pinch event is defined as two pointers down, followed by any operation performed with them other than pointer up

  • IN start1 is the start position for first pointer
  • IN start2 is the start position for second pointer
  • IN end1 is the end position for first pointer
  • IN end2 is the end position for second pointer
  • IN center is the rotation center

Implementation

void registerOnPinch(final PinchCallback? pinchCallback) {
  _pinchCallback = pinchCallback;

  GemKitPlatform.instance.filterEvent(
    pointerId,
    'onPinch',
    pinchCallback == null,
  );
}