@Override
    public void doDraw(Canvas canvas, Paint paint) {
        if (!mOpen) {
            Rect bounds = getBounds();
            float radius = (mSize / 2);
            canvas.drawCircle(bounds.centerX(), bounds.centerY(), radius, paint);
        }
    }
<h1>HACK</h1>
<p>
to draw the Thumb circle.
</p>
<p>
It's special because it will stop drawing once the state is pressed/focused BUT only after a small delay.
</p>
<p>
</p>

@hide
app/src/main/java/com/duan/musicoco/view/discreteseekbar/internal/drawable/ThumbDrawable.java