将 QStackedWidget 用于多窗口 PyQt 应用程序 [英] Using QStackedWidget for multi-windowed PyQt application

问题描述

我有一个多窗口 PyQt5(Python 3.6.2 和 Qt 5.9.0)应用程序，它在标准桌面(即窗口管理)环境中运行时可以完美运行.我的目标平台是嵌入式设备(例如 Raspberry Pi、i.MX6 等)，我不会在其中使用 X11 窗口系统.我目前正在使用 eglfs 平台测试嵌入式设备，该平台不支持多窗口.我正在考虑使用 QtWayland 平台，或者修改我的方法以使用 QtStackedWidget 将窗口"作为堆栈中的单个页面包含在内.

I have a multi-windowed PyQt5 (Python 3.6.2 with Qt 5.9.0) application which works perfectly when run in a standard desktop (i.e. window managed) environment. My target platform is an embedded device (Raspberry Pi, i.MX6, etc. for example), where I won't be using the X11 window system. I'm currently testing the embedded device with the eglfs platform, which doesn't support multiple windows. I'm considering either using the QtWayland platform, or modifying my approach to use a QtStackedWidget to contain the 'windows' as individual pages within the stack.

如何修改下面的高级窗口应用程序以利用 QStackedWidget 安排，以促进无窗口环境中的多页应用程序?

How can I modify the below high-level windowed application to leverage a QStackedWidget arrangement, to facilitate a multi-paged application in a windowless environment?

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow

from ui_Main import Ui_Main
from ui_Window1 import Ui_Window1
from ui_Window2 import Ui_Window2

class Main(QMainWindow, Ui_Main):
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)
        self.setupUi(self)

        #Initialisation functions

        self.PushButton1.clicked.connect(self.OpenWindow1)
        self.PushButton2.clicked.connect(self.OpenWindow2)

    def OpenWindow1(self):
        showWindow1.show()

    def OpenWindow2(self):
        showWindow2.show()

class Window1(QMainWindow, Ui_Window1):
    def __init__(self, parent=None):
        super(Window1, self).__init__(parent)
        self.setupUi(self)

class Window2(QMainWindow, Ui_Window2):
    def __init__(self, parent=None):
        super(Window2, self).__init__(parent)
        self.setupUi(self)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    showMain = Main()
    showWindow1 = Window1()
    showWindow2 = Window2()
    showMain.show()

    app.exec_()

推荐答案

我使用 QStackedLayout 将每个窗口"嵌套在单个页面中，然后整合外部 .py 文件转换为单个外部文件.以下文件反映了这种方法，使用我的问题中发布的示例多窗口示例.

I've used a QStackedLayout to nest each of the 'windows' within a single page, and then consolidated each of the setupUI() functions of the external .py files into a single external file. The below files reflect this approach, using the sample multi-window example posted in my question.

ui_Main.py:

ui_Main.py:

from PyQt5 import QtCore, QtGui, QtWidgets

import sys

class Ui_Main(QtWidgets.QWidget):
    def setupUi(self, Main):
        Main.setObjectName("Main")
        Main.resize(800, 480)

        self.QtStack = QtWidgets.QStackedLayout()

        self.stack1 = QtWidgets.QWidget()
        self.stack2 = QtWidgets.QWidget()
        self.stack3 = QtWidgets.QWidget()

        self.Window1UI()
        self.Window2UI()
        self.Window3UI()

        self.QtStack.addWidget(self.stack1)
        self.QtStack.addWidget(self.stack2)
        self.QtStack.addWidget(self.stack3)

    def Window1UI(self):
        self.stack1.resize(800, 480)

        #PushButton1#
        self.PushButton1 = QtWidgets.QPushButton(self.stack1)
        self.PushButton1.setText("BUTTON 1")
        self.PushButton1.setGeometry(QtCore.QRect(10, 10, 100, 100))

        #PushButton2#
        self.PushButton2 = QtWidgets.QPushButton(self.stack1)
        self.PushButton2.setText("BUTTON 2")
        self.PushButton2.setGeometry(QtCore.QRect(150, 150, 100, 100))

    def Window2UI(self):
        self.stack2.resize(800, 480)
        self.stack2.setStyleSheet("background: red")

    def Window3UI(self):
        self.stack3.resize(800, 480)
        self.stack3.setStyleSheet("background: blue")

Main.py:

from PyQt5 import QtCore, QtGui, QtWidgets
from PyQt5.QtWidgets import QApplication, QMainWindow

import sys

from ui_Main import Ui_Main

class Main(QMainWindow, Ui_Main):
    def __init__(self, parent=None):
        super(Main, self).__init__(parent)
        self.setupUi(self)

        self.PushButton1.clicked.connect(self.OpenWindow1)
        self.PushButton2.clicked.connect(self.OpenWindow2)

    def OpenWindow1(self):
        self.QtStack.setCurrentIndex(1)

    def OpenWindow2(self):
        self.QtStack.setCurrentIndex(2)

if __name__ == '__main__':
    app = QApplication(sys.argv)
    showMain = Main()
    sys.exit(app.exec_())

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