calculateSelectedX method

int calculateSelectedX(
  1. double selectX
)

计算长按后x的值，转换为index

Implementation

int calculateSelectedX(double selectX) {
  int mSelectedIndex = indexOfTranslateX(xToTranslateX(selectX));
  if (mSelectedIndex < mStartIndex) mSelectedIndex = mStartIndex;
  if (mSelectedIndex > mStopIndex) mSelectedIndex = mStopIndex;

  return mSelectedIndex;
}