web release

replace_web_icons.py

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+from PIL import Image
+import os
+
+# 源图片路径
+source_path = r"e:\project\flutter\f3\flutter_application_2\assets\app_icon_square.png"
+web_dir = r"e:\project\flutter\f3\flutter_application_2\web"
+
+# 打开源图片
+img = Image.open(source_path)
+print(f"源图片尺寸: {img.size}")
+
+# 替换的图标列表
+icons = [
+    # (文件名, 尺寸, 是否是maskable)
+    ("favicon.png", (32, 32), False),
+    ("icons/Icon-192.png", (192, 192), False),
+    ("icons/Icon-512.png", (512, 512), False),
+    ("icons/Icon-maskable-192.png", (192, 192), True),
+    ("icons/Icon-maskable-512.png", (512, 512), True),
+]
+
+for filename, size, is_maskable in icons:
+    output_path = os.path.join(web_dir, filename)
+    
+    # 调整尺寸
+    resized = img.resize(size, Image.Resampling.LANCZOS)
+    
+    # 如果是 maskable 图标，可以添加一些边距（可选）
+    if is_maskable:
+        # 创建一个更大的画布，添加边距
+        margin = int(size[0] * 0.1)  # 10% 边距
+        new_size = (size[0] + margin * 2, size[1] + margin * 2)
+        background = Image.new("RGBA", new_size, (0, 0, 0, 0))
+        background.paste(resized, (margin, margin))
+        resized = background.resize(size, Image.Resampling.LANCZOS)
+    
+    # 保存
+    resized.save(output_path, "PNG")
+    print(f"替换: {output_path} ({size})")
+
+print("\n所有 web 图标替换完成!")