聊天上传图片压缩，新增返回原图接口4

app/common/controller/Upload.php

@@ -419,28 +419,59 @@ class Upload extends BaseController
         }
         // 原图地址
         $filePath = root_path().'public' . $src;
-        // 压缩图地址
+        // 处理图地址
         $target = root_path().'public/' .ltrim($compress_path,'/');
-        // 压缩并处理图片大小
-        $compress_res = $this->compressTo5x5($filePath, $target);
+        // 图片模糊处理
+        if (class_exists('Imagick')) {
+            $compress_res = $this->slightBlurImagick($filePath, $target, 1);
+        } else {
+            $compress_res = $this->slightBlurGD($filePath, $target, 1);
+        }
         if (!$compress_res) {
             return '';
         }
         return $compress_path;
     }
 
-    /**
-     * 使用Imagick压缩到5x5像素
-     * @param $source
-     * @param $target
-     * @return bool
-     */
-    protected function compressTo5x5($source, $target)
+    // 使用Imagick添加轻微模糊
+    protected function slightBlurImagick($source, $target, $blurLevel)
+    {
+        try {
+            $imagick = new \Imagick($source);
+
+            // 轻微模糊 (半径0.5-2.0)
+            $radius = min(2.0, max(0.5, $blurLevel * 0.5));
+            $imagick->gaussianBlurImage($radius, 1);
+
+            // 保存时降低质量
+            $extension = strtolower(pathinfo($target, PATHINFO_EXTENSION));
+
+            switch ($extension) {
+                case 'jpg':
+                case 'jpeg':
+                    $imagick->setImageCompressionQuality(85);
+                    $imagick->setImageFormat('jpeg');
+                break;
+                case 'webp':
+                case 'png':
+                    $imagick->setImageCompressionQuality(85);
+                break;
+            }
+
+            return $imagick->writeImage($target);
+        } catch (\Exception $e) {
+            \think\facade\Log::error('Imagick模糊处理失败: ' . $e->getMessage());
+            return false;
+        }
+    }
+
+    // 使用GD库添加轻微模糊
+    protected function slightBlurGD($source, $target, $blurLevel)
     {
-        // 获取图片信息
-        list($width, $height, $type) = getimagesize($source);
+        $info = getimagesize($source);
+        $type = $info[2];
 
-        // 根据类型创建图像资源
+        // 创建图像资源
         switch ($type) {
             case IMAGETYPE_JPEG:
                 $image = imagecreatefromjpeg($source);
@@ -451,40 +482,35 @@ class Upload extends BaseController
             case IMAGETYPE_GIF:
                 $image = imagecreatefromgif($source);
             break;
+            case IMAGETYPE_WEBP:
+                $image = imagecreatefromwebp($source);
+            break;
             default:
                 return false;
         }
 
-        // 创建5x5目标图像
-        $thumb = imagecreatetruecolor($width, $height);
-
-        // 处理透明背景
-        if ($type == IMAGETYPE_PNG || $type == IMAGETYPE_GIF) {
-            imagecolortransparent($thumb, imagecolorallocatealpha($thumb, 0, 0, 0, 127));
-            imagealphablending($thumb, false);
-            imagesavealpha($thumb, true);
+        // 应用轻微模糊
+        for ($i = 0; $i < $blurLevel; $i++) {
+            imagefilter($image, IMG_FILTER_GAUSSIAN_BLUR);
         }
 
-        // 缩放并复制图像
-        imagecopyresampled($thumb, $image, 0, 0, 0, 0, $width, $height, $width, $height);
-
-        // 保存压缩后的图片
+        // 保存图片
         switch ($type) {
             case IMAGETYPE_JPEG:
-                imagejpeg($thumb, $target, 40);
+                imagejpeg($image, $target, 85);
             break;
             case IMAGETYPE_PNG:
-                imagepng($thumb, $target, 40);
+                imagepng($image, $target, 8);
             break;
             case IMAGETYPE_GIF:
-                imagegif($thumb, $target);
+                imagegif($image, $target);
+            break;
+            case IMAGETYPE_WEBP:
+                imagewebp($image, $target, 85);
             break;
         }
 
-        // 释放内存
         imagedestroy($image);
-        imagedestroy($thumb);
-
         return true;
     }
 }