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83 lines
2.6 KiB
Python
83 lines
2.6 KiB
Python
# -*- coding: utf-8 -*-
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"""锁屏时给出人话提示。
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实测：
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电脑锁屏时 ImageGrab.grab() 抛 OSError("screen grab failed")，
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原来的报错就是原样透传"抓屏失败: screen grab failed" ——
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用户看了不知道该怎么办。
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改成：
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检测到是这个原因时，直接说"电脑锁屏了（或没有桌面会话），
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请先解锁屏幕再试"。
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顺便：这是**常见情况**（人离开电脑就会锁），不是异常。
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"""
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from __future__ import annotations
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import sys
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from pathlib import Path
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SCREEN = Path(r"C:\Users\shu\Desktop\deepseekagent\LanRemote\windows"
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r"\lanremote\screen.py")
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OLD = ''' with self._lock:
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try:
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image = ImageGrab.grab()
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except Exception as exc: # noqa: BLE001
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raise ScreenError(f"抓屏失败: {exc}") from exc'''
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NEW = ''' with self._lock:
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try:
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image = ImageGrab.grab()
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except Exception as exc: # noqa: BLE001
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raise ScreenError(_grab_error_text(exc)) from exc'''
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HELPER_ANCHOR = '''class ScreenCapturer:'''
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HELPER_NEW = '''def _grab_error_text(error: Exception) -> str:
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"""把抓屏失败翻译成人话。
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锁屏是最常见的失败原因（离开电脑就会锁），
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而且 Windows 锁屏时**不给抓屏**，报的是 OSError: screen grab failed。
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直接透传这句用户看不懂，所以这里给出可操作的提示。
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"""
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text = str(error).lower()
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if "screen grab failed" in text or "grab" in text:
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return ("抓屏失败：电脑现在锁屏了（或没有桌面会话）。"
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"请先解锁屏幕再试。")
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return f"抓屏失败: {error}"
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''' + HELPER_ANCHOR
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def main() -> int:
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text = SCREEN.read_text(encoding="utf-8")
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if "_grab_error_text" in text:
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print(" 已经改过")
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return 0
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ok = True
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for old, new, label in ((HELPER_ANCHOR, HELPER_NEW, "加提示函数"),
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(OLD, NEW, "用提示函数")):
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if old not in text:
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print(f" [失败] {label} —— 锚点没找到")
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ok = False
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continue
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text = text.replace(old, new, 1)
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print(f" {label}")
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SCREEN.write_text(text, encoding="utf-8", newline="\n")
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import ast
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try:
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ast.parse(text)
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print(" screen.py 语法 OK")
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except SyntaxError as exc:
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print(f" screen.py 语法错误: 行 {exc.lineno}: {exc.msg}")
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ok = False
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return 0 if ok else 1
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if __name__ == "__main__":
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sys.exit(main())
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