增加了查看入库秤上传图片的GUI界面。

data_management/utils/image_loader.py

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+"""
+图片加载工具
+用于从URL加载图片并转换为PIL/CTkImage格式
+"""
+import io
+import requests
+from PIL import Image
+from typing import Optional
+import customtkinter as ctk
+
+
+def load_image_from_url(
+    url: str,
+    size: tuple = (150, 150),
+    timeout: int = 10
+) -> Optional[ctk.CTkImage]:
+    """
+    从URL加载图片
+    
+    Args:
+        url: 图片URL
+        size: 目标尺寸 (width, height)
+        timeout: 超时时间（秒）
+    
+    Returns:
+        CTkImage对象，失败返回None
+    """
+    try:
+        # 下载图片
+        response = requests.get(url, timeout=timeout)
+        response.raise_for_status()
+        
+        # 转换为PIL Image
+        image_data = io.BytesIO(response.content)
+        pil_image = Image.open(image_data)
+        
+        # 转换为RGB（防止RGBA等格式问题）
+        if pil_image.mode != 'RGB':
+            pil_image = pil_image.convert('RGB')
+        
+        # 创建CTkImage
+        ctk_image = ctk.CTkImage(
+            light_image=pil_image,
+            dark_image=pil_image,
+            size=size
+        )
+        
+        return ctk_image
+        
+    except Exception as e:
+        print(f"加载图片失败 {url}: {e}")
+        return None
+
+
+def create_placeholder_image(
+    size: tuple = (150, 150),
+    text: str = "加载失败"
+) -> ctk.CTkImage:
+    """
+    创建占位图片
+    
+    Args:
+        size: 图片尺寸
+        text: 显示文字
+    
+    Returns:
+        CTkImage对象
+    """
+    # 创建灰色背景图片
+    pil_image = Image.new('RGB', size, color=(200, 200, 200))
+    
+    ctk_image = ctk.CTkImage(
+        light_image=pil_image,
+        dark_image=pil_image,
+        size=size
+    )
+    
+    return ctk_image