85 lines
2.7 KiB
PHP
85 lines
2.7 KiB
PHP
<?php
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namespace App\Handlers;
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use Image;
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use Illuminate\Support\Str;
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class ImageUploadHandler{
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protected $allowed_ext=['png', 'jpg', 'jpeg', 'gif'];
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public function save($file, $folder, $file_prefix, $max_width = false, $need_cut = false, $cut_data=""){
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// 构建存储的文件夹规则，值如：uploads/images/avatars/201709/21/
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// 文件夹切割能让查找效率更高。
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$folder_name = "uploads/images/$folder/" . date("Ym/d", time());
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// 文件具体存储的物理路径，`public_path()` 获取的是 `public` 文件夹的物理路径。
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// 值如：/home/vagrant/Code/larabbs/public/uploads/images/avatars/201709/21/
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$upload_path = public_path() . '/' . $folder_name;
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//获取文件后缀，默认png
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$extension = strtolower($file->getClientOriginalExtension()) ?: 'png';
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// 拼接文件名，加前缀是为了增加辨析度，前缀可以是相关数据模型的 ID
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// 值如：1_1493521050_7BVc9v9ujP.png
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$filename = $file_prefix . '_' . time() . '_' . Str::random(10) . '.' . $extension;
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if(! in_array($extension, $this->allowed_ext)){
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return false;
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}
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$file->move($upload_path, $filename);
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//对图片进行裁剪
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if($need_cut && $extension!='gif' && $cut_data){
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$this->cutPhoto($upload_path."/$filename", $cut_data);
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}
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if($max_width && $extension!='gif'){
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$this->reduceSize($upload_path."/$filename", $max_width);
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}
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return [
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'path'=> config('app.url')."/$folder_name/$filename"
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];
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}
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public function reduceSize($file_path, $max_width)
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{
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// 先实例化，传参是文件的磁盘物理路径
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$image = Image::make($file_path);
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// 进行大小调整的操作
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$image->resize($max_width, null, function ($constraint) {
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// 设定宽度是 $max_width，高度等比例缩放
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$constraint->aspectRatio();
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// 防止裁图时图片尺寸变大
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$constraint->upsize();
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});
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// 对图片修改后进行保存
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$image->save();
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}
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/**
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* 裁剪图片
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*/
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public function cutPhoto($file_path, $cut_data){
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$image = Image::make($file_path);
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// 获取用户对文件进行处理的数据
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$avatarInfo = json_decode($cut_data);
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$cropX = floor($avatarInfo->x);
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$cropY = floor($avatarInfo->y);
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$cropW = floor($avatarInfo->width);
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$cropH = floor($avatarInfo->height);
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$rotate = $avatarInfo->rotate;
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$image->rotate(-$rotate)
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->crop($cropW, $cropH, $cropX, $cropY)
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->save();
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}
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} |