[FIXED] PyQt: How to create custom combined titlebar and menubar

Issue

I'd like to set the menu and title in one bar, but have no idea that how to layout the menu bar and title bar (or my own title bar).

# -*- coding:utf-8 -*- 

from PyQt5 import QtWidgets,QtGui,QtCore
import sys

qss = ""

class UI(QtWidgets.QMainWindow):
    def __init__(self):
        super().__init__()
        self.setui()  
    def setui(self):
        #----------main-window----------------------
        self.setGeometry(0,0,1366,768) #x,y,w,h
        self.setWindowTitle('hello world')
        self.setWindowFlag(QtCore.Qt.FramelessWindowHint)
        #----------menu-bar---------------------
        #--------file-menu-----
        self.menu_file=self.menuBar().addMenu('file')
        self.menu_file_open=self.menu_file.addAction('open')
        self.menu_file_save=self.menu_file.addAction('save')
        self.menu_file_saveas=self.menu_file.addAction('save as...')
        self.menu_file_quit=self.menu_file.addAction('exit')
        #-----------experient-menu----------
        self.menu_work=self.menuBar().addMenu('work')
        #-------------analysis-menu---------
        self.menu_analysis=self.menuBar().addMenu('analysis')
        #------------edit-menu--------------
        self.menu_edit=self.menuBar().addMenu('edit')
        #------------window-menu--------------
        self.menu_window=self.menuBar().addMenu('window')
        #------------help---menu--------------
        self.menu_help=self.menuBar().addMenu('help')
        #-------------set---qss----------------------
        self.setStyleSheet(qss)
        #-------functions--connect-------------------
        self.menu_file_quit.triggered.connect(QtWidgets.qApp.quit)
        self.show()
if __name__ == '__main__':
    app = QtWidgets.QApplication(sys.argv)
    ex = UI()
    sys.exit(app.exec_()) 

I expect a bar include icon, menus, title and the three buttons, just like the menu bar of vscode.

Solution

Try it:

import sys
from PyQt5.QtCore import pyqtSlot, QPoint, Qt, QRect
from PyQt5.QtWidgets import (QMainWindow, QApplication, QPushButton, QHBoxLayout,
                             QVBoxLayout, QTabWidget, QWidget, QAction,
                             QLabel, QSizeGrip, QMenuBar, qApp)
from PyQt5.QtGui import QIcon


class TitleBar(QWidget):
    height = 35
    def __init__(self, parent):
        super(TitleBar, self).__init__()
        self.parent = parent
        self.layout = QHBoxLayout()
        self.layout.setContentsMargins(0,0,0,0)

        self.menu_bar = QMenuBar()
        self.menu_bar.setStyleSheet("""
            color: #fff;
            background-color: #23272A;
            font-size: 14px;
            padding: 4px; 
        """)  
        self.menu_file = self.menu_bar.addMenu('file')
        self.menu_file_open=self.menu_file.addAction('open')
        self.menu_file_save=self.menu_file.addAction('save')
        self.menu_file_saveas=self.menu_file.addAction('save as...')
        self.menu_file_quit=self.menu_file.addAction('exit')
        self.menu_file_quit.triggered.connect(qApp.quit)

        self.menu_work=self.menu_bar.addMenu('work')
        self.menu_analysis=self.menu_bar.addMenu('analysis')
        self.menu_edit=self.menu_bar.addMenu('edit')
        self.menu_window=self.menu_bar.addMenu('window')
        self.menu_help=self.menu_bar.addMenu('help')

        self.layout.addWidget(self.menu_bar) 

        self.title = QLabel("Hello World!")
        self.title.setFixedHeight(self.height)
        self.layout.addWidget(self.title)
        self.title.setStyleSheet("""
            background-color: #23272a;  /* 23272a   #f00*/
            font-weight: bold;
            font-size: 16px;
            color: blue;
            padding-left: 170px;
        """)

        self.closeButton = QPushButton(' ')                            
        self.closeButton.clicked.connect(self.on_click_close)
        self.closeButton.setStyleSheet("""
            background-color: #DC143C;
            border-radius: 10px;
            height: {};
            width: {};
            margin-right: 3px;
            font-weight: bold;
            color: #000;
            font-family: "Webdings";
            qproperty-text: "r";
        """.format(self.height/1.7,self.height/1.7))

        self.maxButton = QPushButton(' ')
        self.maxButton.clicked.connect(self.on_click_maximize)
        self.maxButton.setStyleSheet("""
            background-color: #32CD32;
            border-radius: 10px;
            height: {};
            width: {};
            margin-right: 3px;
            font-weight: bold;
            color: #000;
            font-family: "Webdings";
            qproperty-text: "1";
        """.format(self.height/1.7,self.height/1.7))

        self.hideButton = QPushButton(' ')
        self.hideButton.clicked.connect(self.on_click_hide)
        self.hideButton.setStyleSheet("""
            background-color: #FFFF00;
            border-radius: 10px;
            height: {};
            width: {};
            margin-right: 3px;
            font-weight: bold;
            color: #000;
            font-family: "Webdings";
            qproperty-text: "0";
        """.format(self.height/1.7,self.height/1.7))

        self.layout.addWidget(self.hideButton)
        self.layout.addWidget(self.maxButton)
        self.layout.addWidget(self.closeButton)
        self.setLayout(self.layout)

        self.start = QPoint(0, 0)
        self.pressing = False
        self.maximaze = False

    def resizeEvent(self, QResizeEvent):
        super(TitleBar, self).resizeEvent(QResizeEvent)
        self.title.setFixedWidth(self.parent.width())

    def mousePressEvent(self, event):
        self.start = self.mapToGlobal(event.pos())
        self.pressing = True

    def mouseMoveEvent(self, event):
        if self.pressing:
            self.end = self.mapToGlobal(event.pos())
            self.movement = self.end-self.start
            self.parent.move(self.mapToGlobal(self.movement))
            self.start = self.end

    def mouseReleaseEvent(self, QMouseEvent):
        self.pressing = False

    def on_click_close(self):
        sys.exit()

    def on_click_maximize(self):
        self.maximaze = not self.maximaze
        if self.maximaze:    self.parent.setWindowState(Qt.WindowNoState)
        if not self.maximaze:
            self.parent.setWindowState(Qt.WindowMaximized)

    def on_click_hide(self):
        self.parent.showMinimized()


class StatusBar(QWidget):
    def __init__(self, parent):
        super(StatusBar, self).__init__()
        self.initUI()
        self.showMessage("showMessage: Hello world!")

    def initUI(self):
        self.label = QLabel("Status bar...")
        self.label.setFixedHeight(24)
        self.label.setAlignment(Qt.AlignLeft | Qt.AlignVCenter)
        self.label.setStyleSheet("""
            background-color: #23272a;
            font-size: 12px;
            padding-left: 5px;
            color: white;
        """)
        self.layout = QHBoxLayout()
        self.layout.setContentsMargins(0,0,0,0)
        self.layout.addWidget(self.label)
        self.setLayout(self.layout)

    def showMessage(self, text):
        self.label.setText(text)


class MainWindow(QWidget):
    def __init__(self):
        super(MainWindow, self).__init__()
        self.setFixedSize(800, 400)
        self.setWindowFlags(self.windowFlags() | Qt.FramelessWindowHint)        
        self.setStyleSheet("background-color: #2c2f33;")
        self.setWindowTitle('Code Maker')

        self.title_bar = TitleBar(self) 
        self.status_bar = StatusBar(self)

        self.layout  = QVBoxLayout()
        self.layout.setContentsMargins(0,0,0,0)
        self.layout.addWidget(self.title_bar)
        self.layout.addStretch(1)
        self.layout.addWidget(self.status_bar)
        self.layout.setSpacing(0)                               
        self.setLayout(self.layout)


if __name__ == "__main__":
    app = QApplication(sys.argv)
    mw = MainWindow()
    mw.show()
    sys.exit(app.exec_())

Answered By - S. Nick