web release

crop_image.py

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+from PIL import Image
+import os
+
+# 图片路径
+input_path = r"e:\project\flutter\f3\flutter_application_2\assets\IMG_20260402_172628.png"
+output_dir = r"e:\project\flutter\f3\flutter_application_2\assets"
+
+# 打开图片
+img = Image.open(input_path)
+print(f"原始图片尺寸: {img.size}")
+print(f"原始图片模式: {img.mode}")
+
+# 定义需要的尺寸（应用图标和启动图常见尺寸）
+sizes = [
+    (1024, 1024),  # iOS/macOS 主图标
+    (512, 512),    # 大图标
+    (256, 256),    # 中图标
+    (128, 128),    # 小图标
+    (64, 64),      # 更小图标
+    (192, 192),    # Android mipmap-xxhdpi
+    (144, 144),    # Android mipmap-xxxhdpi (96x1.5)
+    (96, 96),      # Android mipmap-xhdpi
+    (72, 72),      # Android mipmap-hdpi
+    (48, 48),      # Android mipmap-mdpi
+    (216, 216),    # HarmonyOS icon_xlarge
+    (144, 144),    # HarmonyOS icon_large
+    (96, 96),      # HarmonyOS icon
+    (72, 72),      # HarmonyOS icon_small
+]
+
+# 裁剪为正方形（居中裁剪）
+width, height = img.size
+min_size = min(width, height)
+left = (width - min_size) // 2
+top = (height - min_size) // 2
+right = left + min_size
+bottom = top + min_size
+square_img = img.crop((left, top, right, bottom))
+print(f"裁剪后正方形尺寸: {square_img.size}")
+
+# 保存正方形原图
+square_path = os.path.join(output_dir, "app_icon_square.png")
+square_img.save(square_path, "PNG")
+print(f"保存正方形原图: {square_path}")
+
+# 生成各种尺寸
+for size in sizes:
+    resized = square_img.resize(size, Image.Resampling.LANCZOS)
+    output_path = os.path.join(output_dir, f"app_icon_{size[0]}x{size[1]}.png")
+    resized.save(output_path, "PNG")
+    print(f"保存: {output_path}")
+
+# 保存为项目默认图标
+default_icon_path = os.path.join(output_dir, "app_icon_default.png")
+default_size = (512, 512)
+default_img = square_img.resize(default_size, Image.Resampling.LANCZOS)
+default_img.save(default_icon_path, "PNG")
+print(f"\n保存项目默认图标: {default_icon_path}")
+print("完成!")