65 lines
1.8 KiB
PHP
65 lines
1.8 KiB
PHP
<?php
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/**
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* ImageService.php
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*
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* @copyright 2022 opencart.cn - All Rights Reserved
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* @link http://www.guangdawangluo.com
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* @author Edward Yang <yangjin@opencart.cn>
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* @created 2022-07-12 17:30:20
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* @modified 2022-07-12 17:30:20
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*/
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namespace Beike\Services;
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use Intervention\Image\Facades\Image;
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class ImageService
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{
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private $image;
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private $imagePath;
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const PLACEHOLDER_IMAGE = 'catalog/placeholder.png';
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/**
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* @param string $image
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* @throws \Exception
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*/
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public function __construct(string $image)
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{
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$this->image = $image ?: self::PLACEHOLDER_IMAGE;
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$imagePath = public_path($this->image);
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if (!file_exists($imagePath)) {
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throw new \Exception("图片不存在");
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}
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$this->imagePath = $imagePath;
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}
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/**
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* 生成并获取缩略图
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* @param int $width
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* @param int $height
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* @return string
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*/
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public function resize(int $width = 100, int $height = 100): string
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{
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$extension = pathinfo($this->imagePath, PATHINFO_EXTENSION);
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$newImage = 'cache/' . mb_substr($this->image, 0, mb_strrpos($this->image, '.')) . '-' . $width . 'x' . $height . '.' . $extension;
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$newImagePath = public_path($newImage);
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if (!is_file($newImagePath) || (filemtime($this->imagePath) > filemtime($newImagePath))) {
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createDirectories(dirname($newImage));
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$img = Image::make($this->imagePath);
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$img->resize($width, $height, function ($constraint) {
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$constraint->aspectRatio();
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});
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$canvas = Image::canvas($width, $height);
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$canvas->insert($img, 'center');
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$canvas->save($newImagePath);
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}
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return asset($newImage);
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}
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}
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