当前路径：Classes/PHPExcel/Worksheet/BaseDrawing.php
<?php

/**
 * PHPExcel_Worksheet_BaseDrawing
 *
 * Copyright (c) 2006 - 2015 PHPExcel
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 *
 * @category   PHPExcel
 * @package    PHPExcel_Worksheet
 * @copyright  Copyright (c) 2006 - 2015 PHPExcel (http://www.codeplex.com/PHPExcel)
 * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt    LGPL
 * @version    ##VERSION##, ##DATE##
 */
class PHPExcel_Worksheet_BaseDrawing implements PHPExcel_IComparable
{
    /**
     * Image counter
     *
     * @var int
     */
    private static $imageCounter = 0;

    /**
     * Image index
     *
     * @var int
     */
    private $imageIndex = 0;

    /**
     * Name
     *
     * @var string
     */
    protected $name;

    /**
     * Description
     *
     * @var string
     */
    protected $description;

    /**
     * Worksheet
     *
     * @var PHPExcel_Worksheet
     */
    protected $worksheet;

    /**
     * Coordinates
     *
     * @var string
     */
    protected $coordinates;

    /**
     * Offset X
     *
     * @var int
     */
    protected $offsetX;

    /**
     * Offset Y
     *
     * @var int
     */
    protected $offsetY;

    /**
     * Width
     *
     * @var int
     */
    protected $width;

    /**
     * Height
     *
     * @var int
     */
    protected $height;

    /**
     * Proportional resize
     *
     * @var boolean
     */
    protected $resizeProportional;

    /**
     * Rotation
     *
     * @var int
     */
    protected $rotation;

    /**
     * Shadow
     *
     * @var PHPExcel_W...