"""This script generates the tab for online photon count plotting.
Two pixels are chosen for which the photon count registered is plotted
side by side. Can be used in the Mach-Zehnder interferometer setup to
follow the changes of the photon counts in two pixels, or in other
setups for checking the stability.
"""
import glob
import os
import numpy as np
from PyQt5 import QtCore, QtWidgets, uic
from daplis_rtp.functions.sen_pop import sen_pop
from daplis_rtp.gui.plot_figure_MZI import PltCanvas_MZI
from daplis_rtp.gui.ui.MZI_tab import Ui_Form
[docs]
class MZI(QtWidgets.QWidget):
[docs]
def __init__(self, parent=None):
"""Creation of the tab.
The tab is generated with a 'Browse' button along with a line
edit field for choosing/inserting the address of the data
file to plot. Combo boxes for LinoSPAD2 daughterboard number and
the firmware version are generated. A check box for applying and
a button for undoing the mask are generated. A spin box for
the number of timestamps per pixel/TDC per cycle is provided.
A check box for switching between a linear and a logarithmic
scale of the plot is also provided. Buttons 'Refresh plot' for
refreshing the plot and 'Start stream' for plotting the last
file found are created. Two sliders for the left x-axis left
limit and lower y-axis limit are provided.
"""
super().__init__(parent)
# os.chdir(r"C:\Users\bruce\Documents\Python Scripts\daplis-rtp\src\daplis_rtp\gui\ui")
# uic.loadUi(
# r"MZI_tab.ui",
# self,
# )
# os.chdir("../..")
self.ui = Ui_Form()
self.ui.setupUi(self)
# Dynamically bind all child widgets to `self`
for attr_name in dir(self.ui):
if not attr_name.startswith("__"): # Skip dunder methods
attr = getattr(self.ui, attr_name)
setattr(self, attr_name, attr)
self.show()
self.pathtotimestamp = ""
# Browse button
self.pushButton_browse.clicked.connect(self.get_dir)
# Figure widget
self.widget_figure = PltCanvas_MZI()
# self.widget_figure.setMinimumSize(500, 400)
# self.widget_figure.setFixedSize(500, 425)
self.widget_figure.setObjectName("widget")
self.gridLayout.addWidget(self.widget_figure, 1, 0, 4, 3)
# Refresh plot and start stream buttons
self.pushButton_refreshPlot.clicked.connect(self.slot_refresh)
self.pushButton_startStream.clicked.connect(self.slot_startstream)
# Set directory if path was pasted instead of chosen with the
# 'Browse' button
self.lineEdit_browse.textChanged.connect(self.change_path)
# Count of dataset for using as x axis; raised by 1 when
# update_time_stamp is called
self.dataset_count = 0
self.pix1 = 0
self.pix2 = 0
# Sliders
self.horizontalSlider_leftXLim.valueChanged.connect(
self.slot_updateLeftSlider
)
self.horizontalSlider_lowerXLim.valueChanged.connect(
self.slot_updateLowerSlider
)
self.horizontalSlider_leftXLim.setMinimum(0)
self.horizontalSlider_leftXLim.setMaximum(self.dataset_count)
self.horizontalSlider_lowerXLim.setMinimum(0)
self.horizontalSlider_lowerXLim.setMaximum(0)
self.leftPosition = 0
self.bottomPosition = 0
# Browse button
self.pushButton_Reset.clicked.connect(self.resetPlot)
# Timer preset
self.timer = QtCore.QTimer()
self.timerRunning = False
self.last_file_ctime = 0
self.timer.timeout.connect(self.update_time_stamp)
# Testing adaptive fontsize
def resizeEvent(self, event):
# Define minimum and maximum width and corresponding font sizes
min_width = 908
max_width = 3810
min_fontsize = 16
max_fontsize = 40
# Get the current window width
current_width = self.size().width()
# Ensure the current width stays within the bounds
current_width = max(min_width, min(max_width, current_width))
# Calculate the new font size using linear interpolation
new_font_size = min_fontsize + (
(current_width - min_width) / (max_width - min_width)
) * (max_fontsize - min_fontsize)
self.widget_figure.setplotparameters(fontsize=new_font_size)
super().resizeEvent(event)
[docs]
def get_dir(self):
"""Called when the 'browse' button is pressed.
Sets the path variable to the address chosen.
"""
file = str(
QtWidgets.QFileDialog.getExistingDirectory(
self, "Select Directory"
)
)
self.lineEdit_browse.setText(file)
self.pathtotimestamp = file
[docs]
def change_path(self):
"""Called when address is inserted to the line edit.
Sets the path variable to the address inserted.
"""
self.pathtotimestamp = self.lineEdit_browse.text()
[docs]
def slot_startstream(self):
"""Called when the 'Start stream' button is pressed.
Starts an infinite cycle of refreshing the plot when new files
are found in the folder.
"""
self.last_file_ctime = 0
if self.timerRunning is True:
self.timer.stop()
self.timerRunning = False
self.pushButton_startStream.setText("Start stream")
else:
self.pushButton_startStream.setText("Stop stream")
self.timer.start(100)
self.timerRunning = True
[docs]
def slot_stopstream(self):
self.timer.stop()
self.timerRunning = False
self.pushButton_startStream.setText("Start stream")
self.last_file_ctime = 0
[docs]
def slot_checkplotscale_2(self):
"""Called when state of the check box for scale is changed.
Switches between logarithmic and linear scale of the plot.
"""
if self.checkBox_presetMask_2.isChecked():
self.widget_figure.setPlotScale(True)
else:
self.widget_figure.setPlotScale(False)
[docs]
def slot_refresh(self):
"""Called when the 'Refresh button' is pressed.
Refreshes the plot, either the current one or updates with the
new data if new data were taken.
"""
self.update_time_stamp()
self.last_file_ctime = 0
[docs]
def slot_updateLeftSlider(self):
"""Called when left slider state has changed.
Updates the left x-axis limit based on the position of the
slider.
"""
self.leftPosition = self.horizontalSlider_leftXLim.value()
[docs]
def slot_updateLowerSlider(self):
"""Called when left slider state has changed.
Updates the left x-axis limit based on the position of the
slider.
"""
self.bottomPosition = self.horizontalSlider_lowerXLim.value()
[docs]
def resetPlot(self):
self.widget_figure.ax.cla()
self.widget_figure.ax2.cla()
self.dataset_count = 0
self.widget_figure.figure.canvas.draw()
self.widget_figure.figure.canvas.flush_events()
[docs]
def update_time_stamp(self):
"""Called during the cycle of real-time plotting.
Load data from the last data file found in the directory
provided.
"""
stopping = False
os.chdir(self.pathtotimestamp)
DATA_FILES = glob.glob("*.dat*")
try:
last_file = max(DATA_FILES, key=os.path.getctime)
new_file_ctime = os.path.getctime(last_file)
except (IndexError, FileNotFoundError):
msg_window = QtWidgets.QMessageBox()
msg_window.setText(
"No data files found, check the working directory."
)
msg_window.setWindowTitle("Error")
msg_window.exec_()
self.slot_stopstream()
stopping = True
if stopping is False:
try:
if new_file_ctime > self.last_file_ctime:
self.dataset_count += 1
self.horizontalSlider_leftXLim.setMaximum(
self.dataset_count
)
self.last_file_ctime = new_file_ctime
validtimestamps = sen_pop(
self.pathtotimestamp + "/" + last_file,
board_number=self.comboBox_mask_2.currentText(),
fw_ver=self.comboBox_FW_2.currentText(),
timestamps=self.spinBox_timestamps_2.value(),
pix_add_fix=self.checkBox_pix_add_fix.isChecked(),
)
self.widget_figure.setPlotData_MZI(
[self.dataset_count - 1, self.dataset_count],
[
self.pix1,
validtimestamps[self.spinBox_FirstPixel.value()],
],
[
self.pix2,
validtimestamps[self.spinBox_SecondPixel.value()],
],
self.leftPosition,
self.bottomPosition,
)
self.pix1 = validtimestamps[
self.spinBox_FirstPixel.value()
]
self.pix2 = validtimestamps[
self.spinBox_SecondPixel.value()
]
self.horizontalSlider_lowerXLim.setMaximum(
int(np.max([self.pix1, self.pix2]))
)
except ValueError:
msg_window = QtWidgets.QMessageBox()
msg_window.setText(
"Cannot unpack data, check the timestamp setting and "
"the firmware version."
)
msg_window.setWindowTitle("Error")
msg_window.exec_()
self.slot_stopstream()
stopping = True
# Testing adaptive fontsize
[docs]
def resizeEvent(self, event):
# Define minimum and maximum width and corresponding font sizes
min_width = 908
max_width = 3810
min_fontsize = 16
max_fontsize = 40
# Get the current window width
current_width = self.size().width()
# Ensure the current width stays within the bounds
current_width = max(min_width, min(max_width, current_width))
# Calculate the new font size using linear interpolation
new_font_size = min_fontsize + (
(current_width - min_width) / (max_width - min_width)
) * (max_fontsize - min_fontsize)
self.widget_figure.setplotparameters(fontsize=new_font_size)
super().resizeEvent(event)