✨ Added automatic watermark features. Closes (#196, #186, #138, #85, #75)

.env.example

@@ -15,3 +15,4 @@ prefix = lsky_
 single_user_mode = false
 intercept_salacity = false
 url_query = ''
+watermark = false

application/common/controller/Upload.php

@@ -15,6 +15,7 @@ use GuzzleHttp\Client;
 use think\Controller;
 use think\Exception;
 use think\facade\Config;
+use think\Image;
 
 class Upload extends Controller
 {
@@ -90,6 +91,8 @@ class Upload extends Controller
             }
         }
 
+        $temp = $image->getPathname();
+
         // 当前储存策略
         $currentStrategy = strtolower($this->group->strategy);
         $pathname = $this->makePathname($image->getInfo('name'));
@@ -103,6 +106,45 @@ class Upload extends Controller
         }
         $url = make_url($domain, $pathname);
 
+        // 自动水印
+        if (Config::get('system.watermark') && $watermarkConfig = config("watermark.{$currentStrategy}")) {
+            if ($watermarkConfig['enable']) {
+                $watermarkImage = app()->getRuntimePath() . 'temp/' . md5($sha1.$md5);
+                $locates = [
+                    1 => Image::WATER_NORTHWEST, 2 => Image::WATER_NORTH, 3 => Image::WATER_NORTHEAST,
+                    4 => Image::WATER_WEST, 5 => Image::WATER_CENTER, 6 => Image::WATER_EAST,
+                    7 => Image::WATER_SOUTHWEST, 8 => Image::WATER_SOUTH, 9 => Image::WATER_SOUTHEAST,
+                ];
+                switch ($watermarkConfig['type']) {
+                    case 1:
+                        $watermark = Image::open($image)->text(
+                            $watermarkConfig['text'],
+                            $watermarkConfig['font'],
+                            $watermarkConfig['size'],
+                            $watermarkConfig['color'],
+                            $locates[$watermarkConfig['locate']],
+                            $watermarkConfig['offset'],
+                            $watermarkConfig['angle']
+                        );
+                        break;
+                    case 2:
+                        $watermark = Image::open($image)->water(
+                            $watermarkConfig['source'],
+                            $watermarkConfig['locate'],
+                            $watermarkConfig['alpha']
+                        );
+                        break;
+                    default:
+                        throw new Exception('自动水印功能配置异常');
+                }
+                $watermark->save($watermarkImage);
+                $temp = $watermarkImage;
+                $sha1 = sha1_file($temp);
+                $md5 = md5_file($temp);
+                $size = filesize($temp);
+            }
+        }
+
         // 检测是否存在该图片，有则直接返回
         if ($oldImage = Images::where('md5', $md5)->where('sha1', $sha1)->where('strategy', $currentStrategy)->find()) {
             $pathname = $oldImage->pathname;
@@ -110,13 +152,15 @@ class Upload extends Controller
             goto exist;
         }
 
-        if (!$this->strategy->create($pathname, $image->getPathname())) {
+        if (!$this->strategy->create($pathname, $temp)) {
             if (Config::get('app.app_debug')) {
                 throw new Exception($this->strategy->getError());
             }
             throw new Exception('上传失败，请检查策略配置是否正确！');
         }
 
+        isset($watermarkImage) && @unlink($watermarkImage);
+
         exist:
 
         // 图片鉴黄

config/system.php

@@ -12,5 +12,7 @@ return [
     // 违规图片是否直接拦截
     'intercept_salacity' => env('system.intercept_salacity', false),
     // 图片链接额外参数(例: ?test=123)
-    'url_query' => env('system.url_query', '')
+    'url_query' => env('system.url_query', ''),
+    // 是否开启策略自动水印功能
+    'watermark' => env('system.watermark')
 ];

config/watermark.php

@@ -0,0 +1,70 @@
+<?php
+
+/**
+ * 水印配置文件(是否启用受环境变量中的 watermark 配置限制)
+ *
+ * 每个储存策略都可以设置独立的水印配置，分为文字水印和图片水印两种类型。
+ *
+ * 文字水印配置说明：
+ * `enable`: 是否启用水印功能
+ * `type`: 类型[1=文字水印,2=图片水印]
+ * `text`: 水印文字
+ * `font`: 字体文件绝对路径
+ * `size`: 文件大小
+ * `color`: 颜色
+ * `locate`: 水印位置[1=左上角,2=上居中,3=右上角,4=左居中,5=居中,6=右居中,7=左下角,8=下居中,9=右下角]
+ * `offset`: 文字相对当前位置的偏移量，默认0
+ * `angle`: 文字倾斜角度，默认0
+ *
+ * 图片水印配置说明
+ * `enable`: 是否启用水印功能
+ * `type`: 类型[1=文字水印,2=图片水印]
+ * `source`: 水印图片文件绝对路径
+ * `locate`: 水印位置[1=左上角,2=上居中,3=右上角,4=左居中,5=居中,6=右居中,7=左下角,8=下居中,9=右下角]
+ * `alpha`: 透明度
+ *
+ * FAQ：
+ * 1.字体、水印图片如何配置？
+ *     路径下载你的字体文件或水印图片放置到项目任意目录, 变量 $root 则是项目根目录，即 public 上层目录
+ *     假如现在有个 test.ttf 字体文件，将它放置到 public 目录下，那么路径则是 $root . 'public/test.ttf'
+ * 2.文字偏移量(offset)和倾斜角度(angle)支持负数
+ * 3.每个策略的水印配置，只能同时存在一种类型，不可以同时配置文字水印和图片水印
+ * 4.启用水印功能后，系统不会保存原图！
+ */
+
+$root = app()->getRootPath();
+
+return [
+    // 本地
+    'local' => [
+        'enable' => false,
+        'type' => 1,
+        'text' => 'Lsky Pro',
+        'font' => $root . 'public/static/app/font/test.ttf',
+        'size' => 20,
+        'color' => '#333333',
+        'locate' => 9,
+        'offset' => 0,
+        'angle' => 0,
+    ],
+    // 阿里云 OSS
+    'oss' => [
+        'enable' => false,
+        'type' => 2,
+        'source' => $root . 'public/static/app/images/icon.png',
+        'locate' => 9,
+        'alpha' => 100,
+    ],
+    // 腾讯云 COS
+    'cos' => [
+        'enable' => false,
+    ],
+    // 又拍云 USS
+    'uss' => [
+        'enable' => false,
+    ],
+    // 七牛云 Kodo
+    'kodo' => [
+        'enable' => false,
+    ],
+];

extend/strategy/driver/Local.php

@@ -61,7 +61,7 @@ class Local implements Driver
     {
         $path = $this->rootPath . dirname($pathname) . DIRECTORY_SEPARATOR;
         if (true === $this->checkPath($path)) {
-            if (move_uploaded_file($file, $pathname)) {
+            if (rename($file, $pathname)) {
                 return true;
             }
         }