DCS/UI/Main/MainLeft.py

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtCore import QSize, Qt
from PyQt5.QtWidgets import QWidget, QSpacerItem, QHeaderView, QSizePolicy
from PyQt5.QtGui import QPixmap, QIcon


class MainLeft(QWidget):
    def __init__(self):
        super(MainLeft, self).__init__()
        self.setupUi()
        self.setAttribute(Qt.WA_StyledBackground, True)


    def setupUi(self):
        self.createProject = QtWidgets.QPushButton(self)
        self.createProject.setObjectName("createProject")

        # self.openProject = QtWidgets.QPushButton(self)
        # self.openProject.setObjectName("openProject")

        self.varMag = QtWidgets.QPushButton(self)
        self.varMag.setObjectName("varMag")

        self.trendMag = QtWidgets.QPushButton(self)
        self.trendMag.setObjectName("trendMag")

        self.userMag = QtWidgets.QPushButton(self)
        self.userMag.setObjectName("userMag")

        self.protocolMag = QtWidgets.QPushButton(self)
        self.protocolMag.setObjectName("protocolMag")


        self.verticalLayout = QtWidgets.QVBoxLayout(self)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setObjectName("verticalLayout")
        spacerItem = QtWidgets.QSpacerItem(40, 10, QtWidgets.QSizePolicy.Expanding, QtWidgets.QSizePolicy.Minimum)

        self.verticalLayout.addWidget(QtWidgets.QSplitter())
        self.verticalLayout.addWidget(self.createProject)
        self.verticalLayout.addWidget(QtWidgets.QSplitter())
        # self.verticalLayout.addWidget(self.openProject)
        # self.verticalLayout.addWidget(QtWidgets.QSplitter())
        self.verticalLayout.addWidget(self.varMag)
        self.verticalLayout.addWidget(QtWidgets.QSplitter())
        self.verticalLayout.addWidget(self.trendMag)
        self.verticalLayout.addWidget(QtWidgets.QSplitter())
        self.verticalLayout.addWidget(self.userMag)
        self.verticalLayout.addWidget(QtWidgets.QSplitter())
        self.verticalLayout.addWidget(self.protocolMag)
        self.verticalLayout.addWidget(QtWidgets.QSplitter())

        self.verticalLayout.setStretch(0, 1)
        self.verticalLayout.setStretch(1, 4)
        self.verticalLayout.setStretch(2, 2)
        self.verticalLayout.setStretch(3, 4)
        self.verticalLayout.setStretch(4, 2)
        self.verticalLayout.setStretch(5, 4)
        self.verticalLayout.setStretch(6, 2)
        self.verticalLayout.setStretch(7, 4)
        self.verticalLayout.setStretch(8, 2)
        self.verticalLayout.setStretch(9, 4)
        # self.verticalLayout.setStretch(10, 2)
        # self.verticalLayout.setStretch(11, 4)
        self.verticalLayout.setStretch(10, 40)

        QtCore.QMetaObject.connectSlotsByName(self)

        self.createProject.setText('工程管理')
        # self.openProject.setText("打开工程")
        self.varMag.setText("变量管理")
        self.trendMag.setText("历史趋势")
        self.userMag.setText("用户管理")
        self.protocolMag.setText("通讯配置")

        self.createProject.setIcon(QIcon('static/newH.png'))
        # self.openProject.setIcon(QIcon('static/open.png'))
        self.varMag.setIcon(QIcon('static/varMag.png'))
        self.trendMag.setIcon(QIcon('static/trend.png'))
        self.userMag.setIcon(QIcon('static/userMag.png'))
        self.protocolMag.setIcon(QIcon('static/setting.png'))

        for btn in [self.createProject, self.varMag, self.trendMag, self.userMag, self.protocolMag]:
            self.setBtn(btn)

        # self.openProject.clicked.connect(lambda:self.openProject.setIcon(QIcon('static/openH.png')))
        self.createProject.clicked.connect(lambda:self.createProject.setIcon(QIcon('static/newH.png')))
        self.varMag.clicked.connect(lambda:self.varMag.setIcon(QIcon('static/varMagH.png')))
        self.trendMag.clicked.connect(lambda:self.trendMag.setIcon(QIcon('static/trendH.png')))
        self.userMag.clicked.connect(lambda:self.userMag.setIcon(QIcon('static/userMagH.png')))
        self.protocolMag.clicked.connect(lambda:self.protocolMag.setIcon(QIcon('static/settingH.png')))

        self.createProject.setChecked(True)
        self.createProject.setDown(True)

    def setBtn(self, btn):
        btn.setCheckable(True)
        btn.setSizePolicy(QSizePolicy.Preferred, QSizePolicy.Preferred)
        btn.setAttribute(Qt.WA_Hover,True)
        btn.installEventFilter(self)
        btn.setIconSize(QtCore.QSize(26, 26))
        btn.clicked.connect(self.clearButton)
        btn.setAutoExclusive(True)
        btn.clicked.connect(lambda:btn.setDown(True))
        btn.clicked.connect(lambda:btn.setChecked(True))



    def eventFilter(self, object, event):
        if object == self.createProject:
            if event.type() == QtCore.QEvent.HoverEnter:
                self.createProject.setIcon(QIcon('static/newH.png'))
                return True
            if event.type() == QtCore.QEvent.HoverLeave and not self.createProject.isChecked():
                self.createProject.setIcon(QIcon('static/new.png'))
                return True
        # if object == self.openProject:
        #     if event.type() == QtCore.QEvent.HoverEnter:
        #         self.openProject.setIcon(QIcon('static/openH.png'))
        #         return True
        #     if event.type() == QtCore.QEvent.HoverLeave and not self.openProject.isChecked():
        #         self.openProject.setIcon(QIcon('static/open.png'))
        #         return True
        if object == self.varMag:
            if event.type() == QtCore.QEvent.HoverEnter:
                self.varMag.setIcon(QIcon('static/varMagH.png'))
                return True
            if event.type() == QtCore.QEvent.HoverLeave and not self.varMag.isChecked():
                self.varMag.setIcon(QIcon('static/varMag.png'))
                return True
        if object == self.trendMag:
            if event.type() == QtCore.QEvent.HoverEnter:
                self.trendMag.setIcon(QIcon('static/trendH.png'))
                return True
            if event.type() == QtCore.QEvent.HoverLeave and not self.trendMag.isChecked():
                self.trendMag.setIcon(QIcon('static/trend.png'))
                return True
        if object == self.userMag:
            if event.type() == QtCore.QEvent.HoverEnter:
                self.userMag.setIcon(QIcon('static/userMagH.png'))
                return True
            if event.type() == QtCore.QEvent.HoverLeave and not self.userMag.isChecked():
                self.userMag.setIcon(QIcon('static/userMag.png'))
                return True
        if object == self.protocolMag:
            if event.type() == QtCore.QEvent.HoverEnter:
                self.protocolMag.setIcon(QIcon('static/settingH.png'))
                return True
            if event.type() == QtCore.QEvent.HoverLeave and not self.protocolMag.isChecked():
                self.protocolMag.setIcon(QIcon('static/setting.png'))
                return True
        return False

    def clearButton(self):
        self.createProject.setDown(False)
        # self.openProject.setDown(False)
        self.varMag.setDown(False)
        self.trendMag.setDown(False)
        self.userMag.setDown(False)
        self.protocolMag.setDown(False)

        self.createProject.setIcon(QIcon('static/new.png'))
        # self.openProject.setIcon(QIcon('static/open.png'))
        self.varMag.setIcon(QIcon('static/varMag.png'))
        self.trendMag.setIcon(QIcon('static/trend.png'))
        self.userMag.setIcon(QIcon('static/userMag.png'))
        self.protocolMag.setIcon(QIcon('static/setting.png'))