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!")