Source code for edifice.utilities

import typing as tp

from .qt import QT_VERSION
if QT_VERSION == "PyQt5":
    from PyQt5.QtCore import QTimer
    from PyQt5 import QtWidgets
    from PySide2.QtCore import QTimer
    from PySide2 import QtWidgets

[docs]class Timer(object): """A Timer for calling a function periodically. The function passed in the constructor will be called every time_in_ms milliseconds after the Timer is started, until the Timer is stopped. Args: function: the function that will be called periodically """ def __init__(self, function: tp.Callable[[], tp.Any]): self._timer = QTimer() self._timer.timeout.connect(function) self._started = False
[docs] def start(self, time_in_ms: int): """Starts the timer. Args: time_in_ms: time interval for calling the function. """ if not self._started: self._timer.start(time_in_ms) self._started = True
[docs] def stop(self): """Stops the timer.""" if self._started: self._timer.stop() self._started = False
[docs]def alert(message): """Displays a message in an alert box.""" msgbox = QtWidgets.QMessageBox() msgbox.setText(message) msgbox.exec()
[docs]def set_trace(): '''Set a tracepoint in the Python debugger that works with Qt''' import pdb if QT_VERSION == "PyQt5": from PyQt5.QtCore import pyqtRemoveInputHook, pyqtRestoreInputHook pyqtRemoveInputHook() pdb.set_trace()
# # set up the debugger # debugger = pdb.Pdb() # debugger.reset() # # custom next to get outside of function scope # debugger.do_next(None) # run the next command # users_frame = sys._getframe().f_back # frame where the user invoked `pyqt_set_trace()` # debugger.interaction(users_frame, None) # pyqtRestoreInputHook()