public boolean isShowing() {
        return mShowing;
    }
We want the Floater to be full-width because the contents will be moved from side to side.
We may/should change this in the future to use just the PARENT View width and/or pass it in the constructor
app/src/main/java/com/duan/musicoco/view/discreteseekbar/internal/PopupIndicator.java