完成显示水印功能；

2026-03-03 16:24:28 +08:00 · 2024-02-18 15:41:14 +08:00
parent a59b124e70
commit aa9ae7f30b
8 changed files with 150 additions and 32 deletions
--- a/app/common/tools/Image.php
+++ b/app/common/tools/Image.php
@@ -0,0 +1,75 @@
+<?php
+
+namespace app\common\tools;
+
+use Intervention\Image\Image as ImageImage;
+use Intervention\Image\ImageManagerStatic;
+use SplFileInfo;
+use think\facade\App;
+
+class Image
+{
+    public static function addWatermark(SplFileInfo $file, $watermark_str = 'phpreturn.com'):ImageImage
+    {
+        // 检查文件是否是图片
+        if (!in_array($file->getExtension(), ['jpg', 'jpeg', 'png', 'gif'])) {
+            return false;
+        }
+
+        ImageManagerStatic::configure(['driver' => 'imagick']);
+
+        $img = ImageManagerStatic::make($file->getPathname());
+
+        $font_size = 20;
+
+        // 字体大小为宽度的 1/20
+        $font_size = $img->width() / 40;
+        $font_size = ceil($font_size);
+
+        $x = $img->width() - $font_size;
+        $y = $img->height() - $font_size;
+
+        $img->text($watermark_str, $x + $font_size * 0.05, $y + $font_size * 0.05, function ($font) use ($font_size) {
+            $font->file(App::getRootPath() . '/source/font/SourceHanSans-Normal.otf');
+            $font->size($font_size);
+            $font->color([0, 0, 0, 0.9]);
+            $font->align('right');
+            $font->valign('bottom');
+        });
+        $img->text($watermark_str, $x, $y, function ($font) use ($font_size) {
+            $font->file(App::getRootPath() . '/source/font/SourceHanSans-Normal.otf');
+            $font->size($font_size);
+            $font->color([255, 255, 255, 0.9]);
+            $font->align('right');
+            $font->valign('bottom');
+        });
+
+        return $img;
+    }
+
+    public static function handelWatermarkSave($src, $watermarked_file_save_name = null)
+    {
+        $src_file = new SplFileInfo($src);
+        $watermark_text = get_system_config('watermark_text', 'phpreturn.com');
+
+        $src_md5 = md5($src . $watermark_text);
+
+        if (!$watermarked_file_save_name) {
+            $watermarked_file_save_name = '/upload/watermark/' . $src_md5 . '.' . $src_file->getExtension();
+        }
+
+        $watermarked_file = App::getRootPath() . '/public' . $watermarked_file_save_name;
+
+        if (file_exists($watermarked_file)) {
+            return $watermarked_file_save_name;
+        }
+
+        if (!is_dir(dirname($watermarked_file))) {
+            mkdir(dirname($watermarked_file), 0777, true);
+        }
+
+        static::addWatermark($src_file, $watermark_text)->save($watermarked_file);
+
+        return $watermarked_file_save_name;
+    }
+}