Как узнать на какой именно график нажал пользователь

Есть две вкладки, в каждой из которых есть график. При нажатии на бар, он возвращает его позицию, и эту позицию мне надо занести в labelы соответствующей вкладки.

Я думаю, что для того что бы это сделать, надо добавить в условие еще проверку на то, на какой именно график (из вкладки Feed или Water) пользователь нажал.

Как это реализовать? Как понять на какой график именно нажал пользователь? Каким методом надо воспользоваться?

Код программы:

import numpy as np
from PyQt5 import QtGui, QtWidgets, QtCore

from pyqtgraph.Qt import QtCore, QtGui
import pyqtgraph as pg
from pyqtgraph import PlotWidget


class Ui_MainWindow(object):
    def setupUi(self, MainWindow):
        MainWindow.setObjectName("MainWindow")
#        MainWindow.resize(1002, 677)
        MainWindow.resize(720, 500)
        self.centralwidget = QtWidgets.QWidget(MainWindow)
        self.centralwidget.setObjectName("centralwidget")
        self.tabWidget = QtWidgets.QTabWidget(self.centralwidget)
        self.tabWidget.setGeometry(QtCore.QRect(10, 10, 701, 391))
        self.tabWidget.setObjectName("tabWidget")
        self.Feed = QtWidgets.QWidget()
        self.Feed.setObjectName("Feed")

#        self.graphWidget = PlotWidget(self.Feed)
        self.graphWidget = MyPlot(self.Feed)                                  

        self.graphWidget.setGeometry(QtCore.QRect(10, 60, 671, 291))
        self.graphWidget.setObjectName("graphWidget")
        self.widget = QtWidgets.QWidget(self.Feed)
        self.widget.setGeometry(QtCore.QRect(10, 10, 671, 41))
        self.widget.setObjectName("widget")
        self.horizontalLayout = QtWidgets.QHBoxLayout(self.widget)
        self.horizontalLayout.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout.setObjectName("horizontalLayout")
        self.label = QtWidgets.QLabel(self.widget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label.setFont(font)
        self.label.setFrameShape(QtWidgets.QFrame.Box)
        self.label.setAlignment(QtCore.Qt.AlignCenter)
        self.label.setObjectName("label")
        self.horizontalLayout.addWidget(self.label)
        self.label_2 = QtWidgets.QLabel(self.widget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_2.setFont(font)
        self.label_2.setFrameShape(QtWidgets.QFrame.Box)
        self.label_2.setAlignment(QtCore.Qt.AlignCenter)
        self.label_2.setObjectName("label_2")
        self.horizontalLayout.addWidget(self.label_2)
        self.label_3 = QtWidgets.QLabel(self.widget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_3.setFont(font)
        self.label_3.setFrameShape(QtWidgets.QFrame.Box)
        self.label_3.setAlignment(QtCore.Qt.AlignCenter)
        self.label_3.setObjectName("label_3")
        self.horizontalLayout.addWidget(self.label_3)
        self.label_4 = QtWidgets.QLabel(self.widget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_4.setFont(font)
        self.label_4.setFrameShape(QtWidgets.QFrame.Box)
        self.label_4.setAlignment(QtCore.Qt.AlignCenter)
        self.label_4.setObjectName("label_4")
        self.horizontalLayout.addWidget(self.label_4)
        self.label_5 = QtWidgets.QLabel(self.widget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_5.setFont(font)
        self.label_5.setFrameShape(QtWidgets.QFrame.Box)
        self.label_5.setAlignment(QtCore.Qt.AlignCenter)
        self.label_5.setObjectName("label_5")
        self.horizontalLayout.addWidget(self.label_5)
        self.tabWidget.addTab(self.Feed, "")
        self.Water = QtWidgets.QWidget()
        self.Water.setObjectName("Water")
       # self.graphWidget_2 = PlotWidget(self.Water)
        self.graphWidget_2 = MyPlot(self.Water)
        self.graphWidget_2.setGeometry(QtCore.QRect(10, 60, 671, 291))
        self.graphWidget_2.setObjectName("graphWidget_2")
        self.layoutWidget = QtWidgets.QWidget(self.Water)
        self.layoutWidget.setGeometry(QtCore.QRect(10, 10, 671, 41))
        self.layoutWidget.setObjectName("layoutWidget")
        self.horizontalLayout_2 = QtWidgets.QHBoxLayout(self.layoutWidget)
        self.horizontalLayout_2.setContentsMargins(0, 0, 0, 0)
        self.horizontalLayout_2.setObjectName("horizontalLayout_2")
        self.label_6 = QtWidgets.QLabel(self.layoutWidget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_6.setFont(font)
        self.label_6.setFrameShape(QtWidgets.QFrame.Box)
        self.label_6.setAlignment(QtCore.Qt.AlignCenter)
        self.label_6.setObjectName("label_6")
        self.horizontalLayout_2.addWidget(self.label_6)
        self.label_7 = QtWidgets.QLabel(self.layoutWidget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_7.setFont(font)
        self.label_7.setFrameShape(QtWidgets.QFrame.Box)
        self.label_7.setAlignment(QtCore.Qt.AlignCenter)
        self.label_7.setObjectName("label_7")
        self.horizontalLayout_2.addWidget(self.label_7)
        self.label_8 = QtWidgets.QLabel(self.layoutWidget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_8.setFont(font)
        self.label_8.setFrameShape(QtWidgets.QFrame.Box)
        self.label_8.setAlignment(QtCore.Qt.AlignCenter)
        self.label_8.setObjectName("label_8")
        self.horizontalLayout_2.addWidget(self.label_8)
        self.label_9 = QtWidgets.QLabel(self.layoutWidget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_9.setFont(font)
        self.label_9.setFrameShape(QtWidgets.QFrame.Box)
        self.label_9.setAlignment(QtCore.Qt.AlignCenter)
        self.label_9.setObjectName("label_9")
        self.horizontalLayout_2.addWidget(self.label_9)
        self.label_10 = QtWidgets.QLabel(self.layoutWidget)
        font = QtGui.QFont()
        font.setPointSize(9)
        self.label_10.setFont(font)
        self.label_10.setFrameShape(QtWidgets.QFrame.Box)
        self.label_10.setAlignment(QtCore.Qt.AlignCenter)
        self.label_10.setObjectName("label_10")
        self.horizontalLayout_2.addWidget(self.label_10)
        self.tabWidget.addTab(self.Water, "")
        MainWindow.setCentralWidget(self.centralwidget)

        self.retranslateUi(MainWindow)
        QtCore.QMetaObject.connectSlotsByName(MainWindow)

    def retranslateUi(self, MainWindow):
        _translate = QtCore.QCoreApplication.translate
        MainWindow.setWindowTitle(_translate("MainWindow", "MainWindow"))
        self.label.setText(_translate("MainWindow", "TextLabel"))
        self.label_2.setText(_translate("MainWindow", "TextLabel"))
        self.label_3.setText(_translate("MainWindow", "TextLabel"))
        self.label_4.setText(_translate("MainWindow", "TextLabel"))
        self.label_5.setText(_translate("MainWindow", "TextLabel"))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.Feed), _translate("MainWindow", "Feed"))
        self.label_6.setText(_translate("MainWindow", "TextLabel"))
        self.label_7.setText(_translate("MainWindow", "TextLabel"))
        self.label_8.setText(_translate("MainWindow", "TextLabel"))
        self.label_9.setText(_translate("MainWindow", "TextLabel"))
        self.label_10.setText(_translate("MainWindow", "TextLabel"))
        self.tabWidget.setTabText(self.tabWidget.indexOf(self.Water), _translate("MainWindow", "Water"))


class MainWindow(QtWidgets.QMainWindow, Ui_MainWindow):                
    def __init__(self, *args, **kwargs):
        super(MainWindow, self).__init__(*args, **kwargs)

        self.setupUi(self)                                             

        x = np.arange(5)
        y1 = x
        self.barFeed = MyBarGraphItem()
        self.barFeed.setAttr(x=x, y=y1-0.5*x, height=y1, width=0.8)

        self.barWater = MyBarGraphItem()
        self.barWater.setAttr(x=x, y=y1-0.5*x, height=y1, width=0.8)
        self.graphWidget.addBars(self.barFeed)
        self.graphWidget_2.addBars(self.barWater)





class MyPlot(PlotWidget):
    def __init__(self, parent=None):                                     
        super().__init__(parent)
        self.bars = None


    def mousePressEvent(self, ev):
        pos = self.getPlotItem().vb.mapSceneToView(ev.pos())
        if self.bars is not None:
            x, y = pos.x(), pos.y()

            for i,_ in enumerate(self.bars.x):
                if self.bars.x[i]-self.bars.width/2 < x < self.bars.x[i]+self.bars.width/2\
                        and 0 < y < self.bars.height[i]:
                    print('\nclicked on bar '+str(i))
                    print('clicked on bar '+str(x)+' ;    '+str(y))
                    self.window().label.setText(f'bar={i}')
                    self.window().label_2.setText(f'x={x:.5f}')
                    self.window().label_3.setText(f'y={y:.5f}')
                    ev.accept()




        super().mousePressEvent(ev)

    def addBars(self, bars):
        self.bars = bars
        self.addItem(self.bars)


class MyBarGraphItem(pg.BarGraphItem):
    def __init__(self):
        super().__init__()

    def setAttr(self, **opts):
        print(opts)
        if 'x' in opts:
            self.x = opts['x']
        if 'height' in opts:
            self.height = opts['height']
        if 'width' in opts:
            self.width = opts['width']
        if 'y' in opts:
            self.y = opts['y']
        super().setOpts(**opts)



def main():
    app = QtWidgets.QApplication(sys.argv)
    main = MainWindow()
    main.show()
    sys.exit(app.exec_())

if __name__ == '__main__':
    main()

Как я думаю это реализовать:

    def mousePressEvent(self, ev):
        pos = self.getPlotItem().vb.mapSceneToView(ev.pos())
        if self.bars is not None:
            x, y = pos.x(), pos.y()

            for i,_ in enumerate(self.bars.x):
                # Если пользователь нажал на бар графика Feed то лабелы меняются в вкладке Feed
                if self.bars.x[i]-self.bars.width/2 < x < self.bars.x[i]+self.bars.width/2\
                        and 0 < y < self.bars.height[i]: #and (Выбранный график = График из вкладки Feed) 
                    print('\nclicked on bar '+str(i))
                    print('clicked on bar '+str(x)+' ;    '+str(y))
                    self.window().label.setText(f'bar={i}')
                    self.window().label_2.setText(f'x={x:.5f}')
                    self.window().label_3.setText(f'y={y:.5f}')
                    ev.accept()

                # Если пользователь нажал на бар графика Water то лабелы меняются в вкладке Water
            for i,_ in enumerate(self.bars.x):
                if self.bars.x[i]-self.bars.width/2 < x < self.bars.x[i]+self.bars.width/2\
                        and 0 < y < self.bars.height[i]: #and (Выбранный график = График из вкладки Water)
                    print('\nclicked on bar '+str(i))
                    print('clicked on bar '+str(x)+' ;    '+str(y))
                    self.window().label_6.setText(f'bar={i}')
                    self.window().label_7.setText(f'x={x:.5f}')
                    self.window().label_8.setText(f'y={y:.5f}')
                    ev.accept()

        super().mousePressEvent(ev)

    def addBars(self, bars):
        self.bars = bars
        self.addItem(self.bars)