private void setPopupOffset(
ListPopupWindow popup, int screenRotation, Rect appRect, Rect padding) {
int[] anchorLocation = new int[2];
popup.getAnchorView().getLocationInWindow(anchorLocation);
int anchorHeight = popup.getAnchorView().getHeight();
// If we have a hardware menu button, locate the app menu closer to the estimated
// hardware menu button location.
if (mIsByPermanentButton) {
int horizontalOffset = -anchorLocation[0];
switch (screenRotation) {
case Surface.ROTATION_0:
case Surface.ROTATION_180:
horizontalOffset += (appRect.width() - mPopup.getWidth()) / 2;
break;
case Surface.ROTATION_90:
horizontalOffset += appRect.width() - mPopup.getWidth();
break;
case Surface.ROTATION_270:
break;
default:
assert false;
break;
}
popup.setHorizontalOffset(horizontalOffset);
// The menu is displayed above the anchored view, so shift the menu up by the bottom
// padding of the background.
popup.setVerticalOffset(-padding.bottom);
} else {
// The menu is displayed over and below the anchored view, so shift the menu up by the
// height of the anchor view.
popup.setVerticalOffset(-mNegativeSoftwareVerticalOffset - anchorHeight);
}
}
