commit

2026-07-23 10:37:26 +08:00
parent 090abf48fa
commit 40add876cd
3503 changed files with 838201 additions and 5 deletions
@@ -0,0 +1,88 @@
+<?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\image\gif;
+
+class Gif
+{
+    /**
+     * GIF帧列表
+     *
+     * @var array
+     */
+    private $frames = [];
+    /**
+     * 每帧等待时间列表
+     *
+     * @var array
+     */
+    private $delays = [];
+
+    /**
+     * 构造方法，用于解码GIF图片
+     *
+     * @param string $src GIF图片数据
+     * @param string $mod 图片数据类型
+     * @throws \Exception
+     */
+    public function __construct($src = null, $mod = 'url')
+    {
+        if (!is_null($src)) {
+            if ('url' == $mod && is_file($src)) {
+                $src = file_get_contents($src);
+            }
+            /* 解码GIF图片 */
+            try {
+                $de           = new Decoder($src);
+                $this->frames = $de->getFrames();
+                $this->delays = $de->getDelays();
+            } catch (\Exception $e) {
+                throw new \Exception("解码GIF图片出错");
+            }
+        }
+    }
+
+    /**
+     * 设置或获取当前帧的数据
+     *
+     * @param  string $stream 二进制数据流
+     * @return mixed        获取到的数据
+     */
+    public function image($stream = null)
+    {
+        if (is_null($stream)) {
+            $current = current($this->frames);
+            return false === $current ? reset($this->frames) : $current;
+        }
+        $this->frames[key($this->frames)] = $stream;
+    }
+
+    /**
+     * 将当前帧移动到下一帧
+     *
+     * @return string 当前帧数据
+     */
+    public function nextImage()
+    {
+        return next($this->frames);
+    }
+
+    /**
+     * 编码并保存当前GIF图片
+     *
+     * @param  string $pathname 图片名称
+     */
+    public function save($pathname)
+    {
+        $gif = new Encoder($this->frames, $this->delays, 0, 2, 0, 0, 0, 'bin');
+        file_put_contents($pathname, $gif->getAnimation());
+    }
+}