Krzysztof kuhy Rudnicki
92f55cee5a
LockWindow.grab_input() only ever focuses the entry once, on first grab acquisition (_notify_focus_ready is one-shot). A surface torn down and rebuilt later -- a monitor going dark and recovering, which flaky DDC/CI power control does routinely -- gets a brand new widget that nothing ever focuses. The grab stays held, so no other window can take focus either: the entry renders correctly but is permanently keyboard-dead until the process restarts. RecoveryLoop.tick() now re-runs the same focus_surface(preferred_focus_ index()) call whenever a tick's surface delta reports a newly created output, mirroring what LockWindow does on first acquisition. Bundled the loop's five collaborators into a RecoveryCollaborators dataclass rather than growing its constructor past ruff's five-argument limit. Diagnosed against a week of wake-alarm's real journal history: the dismiss-code box rendered normally every alarm morning but accepted no keystrokes, tracking exactly with HDMI-0's recorded dark/recover blips near 07:00 and 07:55 each day. Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01NGAEbavLSCAotBqhVfFhPc |
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| .. | ||
| gatelock | ||
| .pre-commit-config.yaml | ||
| LICENSE | ||
| pyproject.toml | ||
| README.md | ||
| requirements.txt | ||
gatelock
Shared fullscreen lock-window + HMAC log-integrity backend, extracted from three personal automation tools that each independently implemented "lock the screen with a blocking overlay until a condition is met": diet_guard, wake_alarm, and screen-locker.
Why
All three reimplemented the same tkinter fullscreen mechanics (overrideredirect,
input grab, VT-switch disable) at different levels of maturity, and the
HMAC-signed-state module had already been hand-copied between two of them
because they live in separate repos. gatelock is the one place that logic
now lives.
Install
pip install "gatelock @ git+https://github.com/kuhyx/utils@gatelock-v0.1.1#subdirectory=gatelock"
Usage
import tkinter as tk
from gatelock import GateRoot, LockConfig, LockWindow
class MyGate:
def __init__(self, *, demo_mode: bool) -> None:
self.root = GateRoot()
self.root.on_callback_error = self._handle_callback_error
config = LockConfig(mode="soft" if demo_mode else "hard")
self._lock = LockWindow(self.root, config, hooks=self)
self._lock.setup()
# ... build your widgets ...
self._lock.grab_input()
def on_focus_ready(self) -> None:
self.my_entry.focus_force()
def on_callback_error(self) -> None:
self.close()
def on_close(self) -> None:
... # release any hardware/state held while locked
def close(self) -> None:
self._lock.close()
def run(self) -> None:
self._lock.run()
LockConfig's mode preset bundles the common combination ("soft" = topmost
only, typeable, WM-escapable; "hard" = overrideredirect + global grab +
VT-disable). Each axis (overrideredirect, grab, disable_vt,
grab_retry_ms) can be set explicitly to reproduce a consumer's exact prior
behavior where it diverges from the preset.
gatelock.log_integrity ports the HMAC-signed state module used by all three
projects; DEFAULT_HMAC_KEY_FILE (/etc/workout-locker/hmac.key) is
unchanged so existing signed history keeps verifying.
Development
python -m venv .venv && source .venv/bin/activate
pip install -r requirements.txt
pytest
pre-commit install && pre-commit install --hook-type pre-push