PyQt导航栏设计_带导航的pyqt

分享一个右侧导航栏的设计思路

创建一个窗口，使用垂直布局，添加一个可滚动的窗口，如图所示

创建后将QFrame设置成Qt.AlignTop置顶或Qt.AlignBottom置底的位置，如果要添加控件，就将控件加到QFrame中，超出范围的会自动生成滚动条

代码如下

class NavigationFrame(QFrame):
    def __init__(self, parent=None, alignment=Qt.AlignTop):
        super(NavigationFrame, self).__init__(parent)
        self.setFrameShape(QFrame.NoFrame)
        self.setFrameShadow(QFrame.Raised)
        self.resize(1000, 700)
        # 主窗口布局
        self.verticalLayout = QVBoxLayout(self)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setSpacing(0)
        # 滚动区域和布局
        self.scrollArea = QScrollArea(self)
        self.scrollArea.setWidgetResizable(True)
        self.scrollAreaWidget = QWidget()
        self.scrollLayout = QVBoxLayout(self.scrollAreaWidget)
        self.scrollLayout.setContentsMargins(0, 0, 0, 0)
        self.scrollLayout.setSpacing(0)
        # 控件框架
        self.widgetFrame = QFrame(self.scrollAreaWidget)
        self.widgetVerticalLayout = QVBoxLayout(self.widgetFrame)
        self.widgetVerticalLayout.setContentsMargins(0, 0, 0, 0)
        self.widgetVerticalLayout.setSpacing(0)

        # 初始化布局
        self.scrollLayout.addWidget(self.widgetFrame, 0, alignment)
        self.scrollArea.setWidget(self.scrollAreaWidget)
        self.verticalLayout.addWidget(self.scrollArea)

        with open('demo.css', mode='r', encoding='utf-8') as fp:
            self.setStyleSheet(fp.read())

    def addWidget(self, widget: QWidget):
        """
        添加控件
        :param widget:
        :return:
        """
        widget.setParent(self.widgetFrame)
        self.widgetVerticalLayout.addWidget(widget)

    def addLine(self):
        line = QFrame(self.widgetFrame)
        line.setFrameShape(QFrame.HLine)
        line.setFrameShadow(QFrame.Sunken)
        self.widgetVerticalLayout.addWidget(line)
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如果想把导航栏分为两部分，上下各一个，可以创建两个这种框架

效果如下：

下面的框架为了好看可以设置一个最大高度，注意不要设置固定高度，固定高度时滚动条会不生效

完整代码如下：
QSS代码

QScrollArea {
    border: none;
}

QScrollBar:vertical {
    background: transparent;
    width: 5px;
    padding-right: 2px;
}

QScrollBar:horizontal {
    background: transparent;
    height: 0px;
    padding-bottom: 0px;
}

/*隐藏上箭头*/
QScrollBar::sub-line {
    background: transparent;
}

/*隐藏下箭头*/
QScrollBar::add-line {
    background: transparent;
}

QScrollBar::handle {
    background: rgb(122, 122, 122);
    border: 0px solid rgb(128, 128, 128);
    border-radius: 1px;
}

QScrollBar::handle:vertical {
    min-height: 0px;
}

QScrollBar::handle:horizontal {
    min-width: 0px;
}

QScrollBar::add-page,
QScrollBar::sub-page {
    background: none;
}

QPushButton {
    border: none;
    background: transparent;
    padding: 5px 10px 5px 10px;
    font: 16px 'Microsoft YaHei UI';
}

QPushButton:hover {
    background-color: rgba(162, 117, 117, 0.1);
    border-left: 5px solid rgba(6, 222, 157, 0.6);
}

QPushButton:checked {
    background-color: rgba(100, 99, 99, 0.61);
    border-left: 5px solid rgba(166, 6, 222, 0.6);
}
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python代码

import sys
from enum import Enum

import qtawesome as qta
from PyQt5.Qt import *
from qframelesswindow import FramelessWindow


class NavigationPosition(Enum):
    TOP = 0
    CENTER = 1
    BOTTOM = 2


class NavigationButton(QPushButton):
    def __init__(self, parent=None, icon: QIcon = None, text: str = None):
        super(NavigationButton, self).__init__(parent=parent)
        self.setFixedHeight(50)
        self.setFlat(True)
        self.setCheckable(True)
        print(icon)
        if icon is not None:
            self.setIcon(icon)
            self.setIconSize(QSize(40, 40))
        if text is not None:
            self.setText(text)


class NavigationFrame(QFrame):
    def __init__(self, parent=None, alignment=Qt.AlignTop):
        super(NavigationFrame, self).__init__(parent)
        self.setFrameShape(QFrame.NoFrame)
        self.setFrameShadow(QFrame.Raised)
        self.resize(1000, 700)
        # 主窗口布局
        self.verticalLayout = QVBoxLayout(self)
        self.verticalLayout.setContentsMargins(0, 0, 0, 0)
        self.verticalLayout.setSpacing(0)
        # 滚动区域和布局
        self.scrollArea = QScrollArea(self)
        self.scrollArea.setWidgetResizable(True)
        self.scrollAreaWidget = QWidget()
        self.scrollLayout = QVBoxLayout(self.scrollAreaWidget)
        self.scrollLayout.setContentsMargins(0, 0, 0, 0)
        self.scrollLayout.setSpacing(0)
        # 控件框架
        self.widgetFrame = QFrame(self.scrollAreaWidget)
        self.widgetVerticalLayout = QVBoxLayout(self.widgetFrame)
        self.widgetVerticalLayout.setContentsMargins(0, 0, 0, 0)
        self.widgetVerticalLayout.setSpacing(0)

        # 初始化布局
        self.scrollLayout.addWidget(self.widgetFrame, 0, alignment)
        self.scrollArea.setWidget(self.scrollAreaWidget)
        self.verticalLayout.addWidget(self.scrollArea)

        with open('demo.css', mode='r', encoding='utf-8') as fp:
            self.setStyleSheet(fp.read())

    def addWidget(self, widget: QWidget):
        """
        添加控件
        :param widget:
        :return:
        """
        widget.setParent(self.widgetFrame)
        self.widgetVerticalLayout.addWidget(widget)

    def addLine(self):
        line = QFrame(self.widgetFrame)
        line.setFrameShape(QFrame.HLine)
        line.setFrameShadow(QFrame.Sunken)
        self.widgetVerticalLayout.addWidget(line)


class MainWindow(FramelessWindow):
    def __init__(self, parent=None):
        super(MainWindow, self).__init__(parent)
        self.resize(1000, 700)
        self.verticalLayout = QVBoxLayout(self)
        self.verticalLayout.setContentsMargins(0, self.titleBar.height(), 0, 0)
        self.verticalLayout.setSpacing(0)
        self.buttonGroup = QButtonGroup(self)
        # 导航栏框架，上下
        self.topFrame = NavigationFrame(self)
        self.bottomFrame = NavigationFrame(self, Qt.AlignBottom)
        self.bottomFrame.setObjectName("bottomFrame")
        self.bottomFrame.setStyleSheet('#bottomFrame {border-top: 2px solid #fff200;}')
        self.bottomFrame.setMaximumHeight(150)
        self.bottomFrame.addLine()

        self.verticalLayout.addWidget(self.topFrame)
        self.verticalLayout.addWidget(self.bottomFrame)

        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('ei.address-book'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('ei.adjust-alt'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('ei.adult'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('ei.align-center'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('ei.cogs'), 'home', lambda: print('222'), position=NavigationPosition.TOP)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)
        self.addButton(qta.icon('fa.home'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)
        self.addButton(qta.icon('ei.chevron-right'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)
        self.addButton(qta.icon('ei.folder-close'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)
        self.addButton(qta.icon('ei.comment-alt'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)
        self.addButton(qta.icon('ei.indent-left'), 'home', lambda: print('222'), position=NavigationPosition.BOTTOM)

    def addButton(self, icon=None, text=None, click=None, position=NavigationPosition.TOP):
        pushButton = NavigationButton(None, icon, text)
        pushButton.clicked.connect(click)
        self.buttonGroup.addButton(pushButton)
        if position == NavigationPosition.TOP:
            self.topFrame.addWidget(pushButton)
        else:
            self.bottomFrame.addWidget(pushButton)


if __name__ == '__main__':
    QApplication.setHighDpiScaleFactorRoundingPolicy(
        Qt.HighDpiScaleFactorRoundingPolicy.PassThrough
    )
    QApplication.setAttribute(Qt.AA_EnableHighDpiScaling)
    QApplication.setAttribute(Qt.AA_UseHighDpiPixmaps)
    app = QApplication(sys.argv)
    win = MainWindow()
    win.show()
    sys.exit(app.exec_())

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