reduceFingerCount method

void reduceFingerCount(
  1. Offset offset
)

手指抬起

Implementation

void reduceFingerCount(Offset offset) {
  if (drawConfig.value.fingerCount <= 0) {
    return;
  }

  drawConfig.value = drawConfig.value
      .copyWith(fingerCount: drawConfig.value.fingerCount - 1);
}