Fix RTL bug for actionbar tooltips

        final int width = getWidth();

        final int height = getHeight();

        final int midy = screenPos[1] + height / 2;

        int referenceX = screenPos[0] + width / 2;

        if (v.getLayoutDirection() == View.LAYOUT_DIRECTION_LTR) {

            final int screenWidth = context.getResources().getDisplayMetrics().widthPixels;

            referenceX = screenWidth - referenceX; // mirror

        }

        Toast cheatSheet = Toast.makeText(context, mItemData.getTitle(), Toast.LENGTH_SHORT);

        if (midy < displayFrame.height()) {

            // Show along the top; follow action buttons

            cheatSheet.setGravity(Gravity.TOP | Gravity.END,

                    screenWidth - screenPos[0] - width / 2, height);

            cheatSheet.setGravity(Gravity.TOP | Gravity.END, referenceX, height);

        } else {

            // Show along the bottom center

            cheatSheet.setGravity(Gravity.BOTTOM | Gravity.CENTER_HORIZONTAL, 0, height);