Eliminating dead code with no other effect than consuming battery life.

        int dw = mDrawable.getIntrinsicWidth();

        int dh = mDrawable.getIntrinsicHeight();

        if (dir < 0)

            x -= dw;

        // XXX What to do about Paint?

        mDrawable.setBounds(ix, itop, ix+dw, itop+dh);

        mDrawable.draw(c);