Files
dikte/dikte.py
T
yusufipk 0bdee07564 Stop the KDE shortcut and the built-in listener from doubling a press
The listener reads /dev/input and reacts the instant a key goes down. The
KDE shortcut answers the same press by launching a whole Python process,
which then talks over IPC, so its toggle lands a few hundred milliseconds
later. The 400 ms guard caught that echo only when the machine happened to
be quick, and otherwise the recording was started and stopped by one press:
"No speech detected".

Route the two apart. A toggle arriving from outside the process right
behind a listener trigger is that echo, and its lateness also proves the
KDE shortcut is live, which leaves the listener with nothing to do but
double every press. So retire it, remember that in the config, and say so
in the tray rather than changing behaviour silently.
2026-07-27 23:00:14 +07:00

369 lines
13 KiB
Python
Executable File

#!/usr/bin/env python3
"""Dikte: press Ctrl+Space, talk, press again to transcribe, clean up and paste.
Usage:
dikte.py run in the background (tray icon)
dikte.py toggle start / stop recording
dikte.py cancel discard the current recording
dikte.py settings open the settings window
dikte.py restart reload the running instance
dikte.py quit shut the application down
"""
import os
import sys
# A Wayland client cannot place a window in a screen corner, so the indicator
# is drawn through XWayland.
if os.environ.get("XDG_SESSION_TYPE") == "wayland" and os.environ.get("DISPLAY"):
os.environ.setdefault("QT_QPA_PLATFORM", "xcb")
from PyQt6.QtCore import QTimer, QElapsedTimer # noqa: E402
from PyQt6.QtGui import QAction, QIcon # noqa: E402
from PyQt6.QtNetwork import QLocalServer, QLocalSocket # noqa: E402
from PyQt6.QtWidgets import QApplication, QMenu, QSystemTrayIcon # noqa: E402
import audio # noqa: E402
import config as cfg # noqa: E402
import hotkey # noqa: E402
from i18n import t # noqa: E402
from overlay import Overlay # noqa: E402
from settings_ui import SettingsWindow # noqa: E402
from worker import Pipeline # noqa: E402
SERVER_NAME = "dikte-" + str(os.getuid())
IDLE, RECORDING, BUSY = "idle", "recording", "busy"
# The KDE shortcut answers a key press by launching a whole Python process, so
# its toggle lands well after the built-in listener has handled the same press.
# Anything arriving inside this window is that echo, not a second press.
ECHO_MS = 2000
class Dikte:
def __init__(self, app):
self.app = app
self.conf = cfg.Config()
self.state = IDLE
self.settings_window = None
self.overlay = Overlay(self.conf["overlay_corner"])
self.recorder = audio.Recorder()
self.pipeline = Pipeline(self.conf)
self.evdev = hotkey.EvdevHotkey()
self.recorder.level.connect(self.overlay.push_level)
self.recorder.stopped.connect(self._on_recorded)
self.recorder.failed.connect(self._on_error)
self.pipeline.stage.connect(self.overlay.show_busy)
self.pipeline.finished.connect(self._on_finished)
self.pipeline.failed.connect(self._on_error)
self.evdev.triggered.connect(self._on_evdev)
self.evdev.failed.connect(self._on_error)
self.elapsed = QElapsedTimer()
self.last_toggle = QElapsedTimer()
self.last_evdev = QElapsedTimer()
self.ticker = QTimer()
self.ticker.setInterval(100)
self.ticker.timeout.connect(self._tick)
self.tray = QSystemTrayIcon()
self._apply_settings()
self.tray.show()
# ---- tray ----------------------------------------------------------
def _build_tray(self):
# Keep menu and actions on self: PyQt does not take ownership when they
# are only passed to addAction(), and garbage collection eats them.
self.menu = QMenu()
self.toggle_action = QAction(t("Start recording"), self.menu)
self.toggle_action.triggered.connect(self._toggle)
self.menu.addAction(self.toggle_action)
self.cancel_action = QAction(t("Cancel recording"), self.menu)
self.cancel_action.triggered.connect(self.cancel)
self.cancel_action.setEnabled(False)
self.menu.addAction(self.cancel_action)
self.menu.addSeparator()
self.settings_action = QAction(t("Settings…"), self.menu)
self.settings_action.triggered.connect(self.open_settings)
self.menu.addAction(self.settings_action)
self.restart_action = QAction(t("Restart"), self.menu)
self.restart_action.triggered.connect(self.restart)
self.menu.addAction(self.restart_action)
self.menu.addSeparator()
self.quit_action = QAction(t("Quit"), self.menu)
self.quit_action.triggered.connect(self.app.quit)
self.menu.addAction(self.quit_action)
self.tray.setContextMenu(self.menu)
self.tray.setToolTip(t("Dikte: ready"))
self.tray.activated.connect(self._tray_clicked)
self._set_icon("audio-input-microphone")
def _tray_clicked(self, reason):
if reason == QSystemTrayIcon.ActivationReason.Trigger:
self._toggle()
def _set_icon(self, name):
icon = QIcon.fromTheme(name)
if icon.isNull():
icon = QIcon.fromTheme("audio-input-microphone")
self.tray.setIcon(icon)
# ---- state ----------------------------------------------------------
def _set_state(self, state):
self.state = state
labels = {
IDLE: ("Start recording", "audio-input-microphone", "Dikte: ready"),
RECORDING: ("Stop and transcribe", "media-record", "Dikte: recording"),
BUSY: ("Working…", "view-refresh", "Dikte: working"),
}
label, icon, tip = labels[state]
self.toggle_action.setText(t(label))
self.toggle_action.setEnabled(state != BUSY)
self.cancel_action.setEnabled(state == RECORDING)
self._set_icon(icon)
self.tray.setToolTip(t(tip))
# ---- actions ---------------------------------------------------------
def toggle(self):
"""A toggle from outside this process: the KDE shortcut, or the CLI."""
# The built-in listener sees the key press the instant it happens, so a
# toggle arriving right behind one is the KDE shortcut catching up on
# that same press. Its lateness is also the proof we were waiting for
# that the shortcut is live, which leaves the listener with nothing to
# do but double every press.
if (self.evdev.running and self.last_evdev.isValid()
and self.last_evdev.elapsed() < ECHO_MS):
self._retire_listener()
return
self._toggle()
def _on_evdev(self):
self.last_evdev.restart()
self._toggle()
def _retire_listener(self):
self.evdev.stop()
self.conf["evdev_hotkey"] = False
self.conf.save()
self.tray.showMessage(
"Dikte",
t("The KDE shortcut is live now, so the built-in listener has been "
"turned off. It was doubling every key press."),
QSystemTrayIcon.MessageIcon.Information, 8000,
)
def _toggle(self):
# Two /dev/input nodes can carry the same keyboard, and a menu click can
# land on top of a key press; swallow the immediate repeat.
if self.last_toggle.isValid() and self.last_toggle.elapsed() < 400:
return
self.last_toggle.restart()
if self.state == IDLE:
self.start()
elif self.state == RECORDING:
self.stop()
# requests during BUSY are ignored
def start(self):
if self.state != IDLE:
return
self.overlay.show_recording()
self.elapsed.restart()
self.ticker.start()
self._set_state(RECORDING)
self.recorder.start(self.conf["mic_target"], self.conf["max_seconds"])
def stop(self):
if self.state != RECORDING:
return
self.ticker.stop()
self._set_state(BUSY)
self.overlay.show_busy(t("Transcribing…"))
self.recorder.stop()
def cancel(self):
if self.state != RECORDING:
return
self.ticker.stop()
self.recorder.cancel()
self.overlay.dismiss()
self._set_state(IDLE)
def _tick(self):
seconds = self.elapsed.elapsed() / 1000.0
self.overlay.set_seconds(seconds)
if seconds >= self.conf["max_seconds"]:
self.stop()
def _on_recorded(self, wav_path, duration, rms_values):
self.pipeline.run(wav_path, duration, rms_values)
def _on_finished(self, _raw, text, warning):
if warning:
# The text was still pasted, but cleanup did not run. Say so loudly:
# a rejected key otherwise looks exactly like working dictation.
self.overlay.show_warning(
t("Pasted raw, cleanup failed: {error}", error=warning.splitlines()[0])
)
self.tray.showMessage(
t("Dikte: cleanup failed"), warning,
QSystemTrayIcon.MessageIcon.Warning, 10000,
)
else:
preview = text.replace("\n", " ")
preview = preview[:48] + ("…" if len(preview) > 48 else "")
action = t("Pasted") if self.conf["auto_paste"] else t("Copied")
self.overlay.show_done(t("{action}: {preview}", action=action, preview=preview))
self._set_state(IDLE)
def _on_error(self, message):
first_line = message.strip().splitlines()[0]
self.overlay.show_error(first_line)
if len(message) > len(first_line):
self.tray.showMessage("Dikte", message, QSystemTrayIcon.MessageIcon.Warning, 8000)
if self.state == RECORDING:
self.ticker.stop()
self._set_state(IDLE)
# ---- settings ---------------------------------------------------------
def open_settings(self):
if self.settings_window is None:
self.settings_window = SettingsWindow(self.conf, launch_command())
self.settings_window.applied.connect(self._apply_settings)
self.settings_window.finished.connect(self._settings_closed)
self.settings_window.show()
self.settings_window.raise_()
self.settings_window.activateWindow()
def _settings_closed(self, *_):
# Don't drop the object while its own signal is still being delivered.
QTimer.singleShot(0, lambda: setattr(self, "settings_window", None))
def _apply_settings(self):
self.overlay.corner = self.conf["overlay_corner"]
self._build_tray()
self._set_state(self.state)
if self.conf["evdev_hotkey"]:
self.evdev.start(self.conf["shortcut"])
else:
self.evdev.stop()
def restart(self):
"""Replace this process with a fresh one, picking up code and settings."""
if self.settings_window is not None:
self.settings_window.close()
self.shutdown()
QLocalServer.removeServer(SERVER_NAME)
script = os.path.realpath(__file__)
os.execv(sys.executable, [sys.executable, script])
def shutdown(self):
self.evdev.stop()
if self.state == RECORDING:
self.recorder.cancel()
self.overlay.dismiss()
self.tray.hide()
def launch_command():
"""The command the KDE shortcut will run."""
return f"{sys.executable} {os.path.realpath(__file__)} toggle"
def send_command(command, timeout=800):
"""Hand a command to the running instance; False when there is none."""
socket = QLocalSocket()
socket.connectToServer(SERVER_NAME)
if not socket.waitForConnected(timeout):
return False
socket.write(command.encode("utf-8"))
socket.flush()
socket.waitForBytesWritten(timeout)
socket.disconnectFromServer()
return True
def main():
args = [a for a in sys.argv[1:] if not a.startswith("-")]
command = args[0] if args else ""
if command and command not in ("toggle", "cancel", "settings", "restart",
"quit", "start", "stop"):
print(__doc__)
return 2
app = QApplication(sys.argv)
app.setApplicationName("Dikte")
app.setDesktopFileName("dikte")
app.setQuitOnLastWindowClosed(False)
# No command and an instance already running: bring its settings forward.
if send_command(command or "settings"):
return 0
if command in ("cancel", "quit", "stop", "restart"):
return 0
if not QSystemTrayIcon.isSystemTrayAvailable():
print("dikte: no system tray found, running anyway")
dikte = Dikte(app)
server = QLocalServer()
# Qt puts the socket in /tmp, so keep it to this user: commands like
# "quit" should not be reachable by anyone else on the machine.
server.setSocketOptions(QLocalServer.SocketOption.UserAccessOption)
QLocalServer.removeServer(SERVER_NAME)
if not server.listen(SERVER_NAME):
print(f"dikte: could not open the IPC socket: {server.errorString()}")
def on_connection():
conn = server.nextPendingConnection()
if conn is None:
return
def read():
payload = bytes(conn.readAll()).decode("utf-8", "replace").strip()
handler = {
"toggle": dikte.toggle,
"start": dikte.start,
"stop": dikte.stop,
"cancel": dikte.cancel,
"settings": dikte.open_settings,
"restart": dikte.restart,
"quit": app.quit,
}.get(payload)
if handler:
handler()
conn.disconnectFromServer()
conn.readyRead.connect(read)
server.newConnection.connect(on_connection)
app.aboutToQuit.connect(dikte.shutdown)
# No key for the chosen transcription provider means nothing can work yet,
# so the settings window is the only useful thing to open.
if command == "settings" or not dikte.conf.transcribe_target().api_key:
dikte.open_settings()
elif command == "toggle":
QTimer.singleShot(0, dikte.toggle)
return app.exec()
if __name__ == "__main__":
sys.exit(main())