131 lines
4.1 KiB
PHP
131 lines
4.1 KiB
PHP
<?php
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namespace app\service;
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use think\Image as TImage;
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use app\model\System;
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class Image extends File
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{
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/**
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* 对图片进行重置大小，并对宽度大于max宽度的等比缩放为宽度为1920
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* milo
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* 2019-10-24修改
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*/
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public static function resize($src)
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{
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$max = 1920;
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$realPath = app()->getRootPath() . 'public/' . ltrim($src,'/');
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if(is_file($realPath)){
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$img = TImage::open($realPath);
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list($img_w,$img_h) = $img->size();
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if($max > 0 && $img_w > $max){
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$img->thumb($max, $max * ($img_h / $img_w))->save($realPath);
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}
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}
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}
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/**
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* 添加水印
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* milo
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* 2018-01-17
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*/
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public static function mark($src)
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{
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$rootPath = app()->getRootPath();
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if(!empty($src)){
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$system = System::getSystem();
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$realPath = $rootPath . 'public/' . ltrim($src, '/');
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if(is_file($realPath)){
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if($system['is_mark']){
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$mark = $rootPath . ltrim($system['mark_img'], '/');
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if(is_file($mark)){
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$mark_position = $system['mark_position']??5;
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$mark_opacity = $system['mark_opacity']??50;
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$img = TImage::Open($realPath);
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$img->water($mark,$mark_position,$mark_opacity)->save($realPath);
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}
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}
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}
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}
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}
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//获取水印位置键值对
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public static function getMarkPosition()
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{
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return [
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"1" => '上左',
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"2" => '上中',
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"3" => '上右',
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"4" => '中左',
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"5" => '正中',
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"6" => '中右',
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"7" => '下左',
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"8" => '下中',
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"9" => '下右'
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];
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}
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/**
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* 删除图片
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* milo
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* 2018-01-15
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*/
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public static function delImg($src)
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{
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if(!empty(trim($src))){
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$realPath = app()->getRootPath() . 'public/' . ltrim($src, '/');
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if (file_exists($realPath)) {
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$info = pathinfo($realPath);
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$source = $info['dirname'] . "/" . $info['filename'] . '*.' . $info['extension'];
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foreach(glob($source) as $filename){
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if(is_file($filename)){
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unlink($filename);
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}
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}
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clearstatcache();// 清除缓存
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}
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}
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}
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/**
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* 获取缩略图
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* milo
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* 2019-10-24修改
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* 避免跨平台出错，目录分隔符全部转换为'/'
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* app()->getRuntimePath() = app()->getRootPath().'runtime/当前应用模块（api）/'
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*/
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public static function getThumb($src,$width=0,$height=0,$type = TImage::THUMB_CENTER)
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{
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if(empty($src)){
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return '';
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}
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$rootPath = app()->getRootPath();
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$realPath = $rootPath . 'public/' . ltrim($src, '/');
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$realPath = str_replace('\\', '/', $realPath);
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if(!file_exists($realPath)){
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return '';
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}
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$info = pathinfo($src);
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if($width <= 0 && $height <= 0){ //高宽都小于或等于0，则返回原图片
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return $src;
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}
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$image = TImage::open($realPath);
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list($imageWidth, $imageHeight) = $image->size();
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if($width <= 0){
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$width = floor($height * ($imageWidth / $imageHeight));
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}elseif($height <= 0){
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$height = floor($width * ($imageHeight / $imageWidth));
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}
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if($width >= $imageWidth || $height >= $imageHeight){
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return $src;
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}
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$thumbName = $info['dirname']. "/" .$info['filename'].'_'.$width.'_'.$height.'.'.$info['extension'];
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$realThumbName = $rootPath . 'public/' . ltrim($thumbName, '/');
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$realThumbName = str_replace('\\', '/', $realThumbName);
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if(!file_exists($realThumbName)){
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$image->thumb($width, $height, $type)->save($realThumbName);
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}
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return str_replace('\\', '/', $thumbName);
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}
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}
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