109 lines
3.5 KiB
PHP
109 lines
3.5 KiB
PHP
<?php
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declare (strict_types=1);
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namespace app\common\library;
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use think\Image;
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/**
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* @mixin \think\Images
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*/
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class Images
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{
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/**
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* 水印函数
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* @access public
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* @param string $filename 文件路径
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* @param array $config 配置数组
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* @return mixed
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* @throws \Exception
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*/
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public function waterMark(string $filename, array $config)
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{
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try {
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// 获取文件信息
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$Image = Image::open($filename);
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$ImageInfo = getimagesize($filename);
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// 判断水印类型
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if ($config['upload_water_type']) { // 文字水印
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$size = $config['upload_water_size'] ? $config['upload_water_size'] : 15;
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$color = $config['upload_water_color'] ?: '#000000';
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$ttf = public_path() . '/static/font/default.ttf';
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if (!preg_match('/^#[0-9a-fA-F]{6}$/', $color)) {
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$color = '#000000';
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}
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// 设置透明度
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$transparency = intval((100 - $config['upload_water_pct']) * (127 / 100));
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$color .= dechex($transparency);
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$resWater = $Image->text($config['upload_water_font'], $ttf, $size, $color, $config['upload_water_pos'])->save($filename);
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} else {
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if (!file_exists($config['upload_water_img'])) {
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return false;
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}
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$ImageWaterInfo = getimagesize($config['upload_water_img']);
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// 对比图片大小
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if ($ImageWaterInfo[0] >= $ImageInfo[0] ||
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$ImageWaterInfo[1] >= $ImageInfo[1]) {
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return false;
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}
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// 检查图片
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$resWater = $Image->water($config['upload_water_img'], $config['upload_water_pos'], $config['upload_water_pct'])->save($filename);
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}
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return $resWater ?? false;
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} catch (\Throwable $th) {
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throw new \Exception($th->getMessage());
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}
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}
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/**
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* 微缩图函数
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* @access public
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* @param $filepath
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* @param $filename
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* @param $config
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* @param bool $avatar
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* @param bool $newfile
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* @return Image|void
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*/
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public function thumb($filepath, $filename, $config, bool $avatar = false, bool $newfile = true)
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{
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$resource = $filepath . '/' . $filename;
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try {
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// 判断图片大小，原图尺寸不得小于微缩图
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// 120x140 120x141 121x140 110x140
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$ImageInfo = getimagesize($resource);
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if ($ImageInfo[0] >= $config['upload_thumb_w'] && $ImageInfo[1] >= $config['upload_thumb_h']) {
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$Image = Image::open($resource);
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// 判断微缩图类型
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if (!empty($avatar)) { // 用户头像模式/替换原来的图片
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$resThumb = $Image->thumb(110, 110, 6)->save($resource, NULL, 90);
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} else {
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if ($newfile) {
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// 保留原来的图片 新文件名建议源文件名+_thumb.jpg 格式
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$resource = $filepath . '/thumb_' . $filename;
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}
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$resThumb = $Image->thumb($config['upload_thumb_w'], $config['upload_thumb_h'], 6)->save($resource, NULL, 90);
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}
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return $resThumb;
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}
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} catch (\Exception $e) {
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throw new \Exception($e->getMessage());
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}
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}
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}
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