vendor/topthink/think-image/src/Image.php

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<?php
// +----------------------------------------------------------------------
// | ThinkPHP [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2006-2015 http://thinkphp.cn All rights reserved.
// +----------------------------------------------------------------------
// | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 )
// +----------------------------------------------------------------------
// | Author: yunwuxin <448901948@qq.com>
// +----------------------------------------------------------------------

namespace think;

use think\image\Exception as ImageException;
use think\image\gif\Gif;

class Image
{

    /* 缩略图相关常量定义 */
    const THUMB_SCALING   = 1; //常量，标识缩略图等比例缩放类型
    const THUMB_FILLED    = 2; //常量，标识缩略图缩放后填充类型
    const THUMB_CENTER    = 3; //常量，标识缩略图居中裁剪类型
    const THUMB_NORTHWEST = 4; //常量，标识缩略图左上角裁剪类型
    const THUMB_SOUTHEAST = 5; //常量，标识缩略图右下角裁剪类型
    const THUMB_FIXED     = 6; //常量，标识缩略图固定尺寸缩放类型
    /* 水印相关常量定义 */
    const WATER_NORTHWEST = 1; //常量，标识左上角水印
    const WATER_NORTH     = 2; //常量，标识上居中水印
    const WATER_NORTHEAST = 3; //常量，标识右上角水印
    const WATER_WEST      = 4; //常量，标识左居中水印
    const WATER_CENTER    = 5; //常量，标识居中水印
    const WATER_EAST      = 6; //常量，标识右居中水印
    const WATER_SOUTHWEST = 7; //常量，标识左下角水印
    const WATER_SOUTH     = 8; //常量，标识下居中水印
    const WATER_SOUTHEAST = 9; //常量，标识右下角水印
    /* 翻转相关常量定义 */
    const FLIP_X = 1; //X轴翻转
    const FLIP_Y = 2; //Y轴翻转

    /**
     * 图像资源对象
     *
     * @var resource
     */
    protected $im;

    /** @var  Gif */
    protected $gif;

    /**
     * 图像信息，包括 width, height, type, mime, size
     *
     * @var array
     */
    protected $info;

    protected function __construct(\SplFileInfo $file)
    {
        //获取图像信息