@Override
public boolean onTouchEventInternal(MotionEvent e) {
final int action = e.getActionMasked();
// This path mimics the Android long press detection while still allowing
// other touch events to come through the gesture detector.
if (!mUseDefaultLongPress) {
if (e.getPointerCount() > 1) {
// If there's more than one pointer ignore the long press.
if (mLongPressRunnable.isPending()) {
cancelLongPress();
}
} else if (action == MotionEvent.ACTION_DOWN) {
// If there was a pending event kill it off.
if (mLongPressRunnable.isPending()) {
cancelLongPress();
}
mLongPressRunnable.init(e);
mLongPressHandler.postDelayed(mLongPressRunnable, mLongPressTimeoutMs);
} else if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
cancelLongPress();
} else if (mLongPressRunnable.isPending()) {
// Allow for a little bit of touch slop.
MotionEvent initialEvent = mLongPressRunnable.getInitialEvent();
float distanceX = initialEvent.getX() - e.getX();
float distanceY = initialEvent.getY() - e.getY();
float distance = distanceX * distanceX + distanceY * distanceY;
// Save a square root here by comparing to squared touch slop
if (distance > mScaledTouchSlop * mScaledTouchSlop) {
cancelLongPress();
}
}
}
// Sends the pinch event if two or more fingers touch the screen. According to test
// Android handles the fingers order pretty consistently so always requesting
// index 0 and 1 works here.
// This might need some rework if 3 fingers event are supported.
if (e.getPointerCount() > 1) {
mHandler.onPinch(
e.getX(0) * mPxToDp,
e.getY(0) * mPxToDp,
e.getX(1) * mPxToDp,
e.getY(1) * mPxToDp,
action == MotionEvent.ACTION_POINTER_DOWN);
mDetector.setIsLongpressEnabled(false);
mSingleInput = false;
} else {
mDetector.setIsLongpressEnabled(mUseDefaultLongPress);
mSingleInput = true;
}
mDetector.onTouchEvent(e);
// Propagate the up event after any gesture events.
if (action == MotionEvent.ACTION_UP || action == MotionEvent.ACTION_CANCEL) {
mHandler.onUpOrCancel();
}
return true;
}
private void longPress(MotionEvent e) {
if (mHandler != null && mSingleInput) {
mInLongPress = true;
mHandler.onLongPress(e.getX() * mPxToDp, e.getY() * mPxToDp);
}
}
