Method _getWidth

src/common/overlay/levelRenderer/Painter.js:697–705

* Method: _getWidth *

()

     *
     */
    _getWidth() {
        var root = this.root;
        var stl = root.currentStyle
            || document.defaultView.getComputedStyle(root);

        return ((root.clientWidth || parseInt(stl.width, 10))
            - parseInt(stl.paddingLeft, 10) // 请原谅我这比较粗暴
            - parseInt(stl.paddingRight, 10)).toFixed(0) - 0;
    }


    /**