新增: 电子相册全屏模式+开机启动+Win10兼容

scripts/build_tray_icon.py

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+from __future__ import annotations
+
+import argparse
+from pathlib import Path
+
+from PIL import Image, ImageChops
+
+
+ICON_SIZES = (16, 20, 24, 32, 40, 48, 64, 128, 256)
+
+
+def remove_green_background(image: Image.Image) -> Image.Image:
+	rgba = image.convert("RGBA")
+	pixels = rgba.load()
+	width, height = rgba.size
+
+	for y in range(height):
+		for x in range(width):
+			r, g, b, a = pixels[x, y]
+			green_score = g - max(r, b)
+			is_key = g > 90 and green_score > 35
+			is_fringe = g > 32 and g > r * 1.35 and g > b * 1.20
+			if is_key or is_fringe:
+				edge = max(0, min(255, (green_score - 18) * 5))
+				alpha = max(0, 255 - edge)
+				if alpha < 56:
+					pixels[x, y] = (0, 0, 0, 0)
+				else:
+					despilled_g = min(g, max(r, b))
+					pixels[x, y] = (r, despilled_g, b, min(a, alpha))
+
+	return rgba
+
+
+def crop_to_alpha(image: Image.Image, padding_ratio: float) -> Image.Image:
+    alpha = image.getchannel("A")
+    bbox = alpha.getbbox()
+    if not bbox:
+        raise ValueError("source image has no visible pixels after background removal")
+
+    cropped = image.crop(bbox)
+    side = max(cropped.size)
+    padding = round(side * padding_ratio)
+    canvas_side = side + padding * 2
+    canvas = Image.new("RGBA", (canvas_side, canvas_side), (0, 0, 0, 0))
+    canvas.alpha_composite(cropped, ((canvas_side - cropped.width) // 2, (canvas_side - cropped.height) // 2))
+    return canvas
+
+
+def trim_transparent_padding(image: Image.Image) -> Image.Image:
+    empty = Image.new("RGBA", image.size, (0, 0, 0, 0))
+    bbox = ImageChops.difference(image, empty).getbbox()
+    if bbox is None:
+        return image
+    return image.crop(bbox)
+
+
+def build_icons(source: Path, out_dir: Path, padding_ratio: float) -> None:
+    out_dir.mkdir(parents=True, exist_ok=True)
+
+    source_image = Image.open(source)
+    transparent = remove_green_background(source_image)
+    master = crop_to_alpha(transparent, padding_ratio)
+    master = trim_transparent_padding(master)
+
+    master_path = out_dir / "tray-icon.png"
+    master.save(master_path)
+
+    resized_images: list[Image.Image] = []
+    for size in ICON_SIZES:
+        resized = master.resize((size, size), Image.Resampling.LANCZOS)
+        resized.save(out_dir / f"tray-icon-{size}.png")
+        resized_images.append(resized)
+
+    ico_path = out_dir / "tray.ico"
+    resized_images[-1].save(
+        ico_path,
+        format="ICO",
+        sizes=[(size, size) for size in ICON_SIZES],
+        append_images=resized_images[:-1],
+    )
+
+    print(f"wrote {master_path}")
+    print(f"wrote {ico_path}")
+
+
+def main() -> None:
+    parser = argparse.ArgumentParser(description="Build u-desktop tray icon assets from a generated source image.")
+    parser.add_argument("--source", type=Path, required=True, help="Generated source PNG on a green chroma-key background.")
+    parser.add_argument("--out-dir", type=Path, default=Path("assets/icons"), help="Directory for PNG sizes and tray.ico.")
+    parser.add_argument("--padding", type=float, default=0.04, help="Transparent padding ratio around the cropped icon.")
+    args = parser.parse_args()
+
+    build_icons(args.source, args.out_dir, args.padding)
+
+
+if __name__ == "__main__":
+    main()