# -*- coding: utf-8 -*-
import sys
from PyQt5.QtWidgets import *
from PyQt5.QtQuickWidgets import QQuickWidget
from PyQt5.QtCore import QUrl, pyqtSignal, pyqtSlot
from PyQt5.QtCore import *

class Widget(QWidget):
    sigSendToQml = pyqtSignal(str)

    def __init__(self, parent=None):
        super().__init__(parent)
        self.setWindowTitle('Qt UI Demo')
        self.setGeometry(100, 100, 640, 480)
        # self.setStyleSheet("QWidget {background-color: transparent; border: 2px solid black; border-radius: 10px;}")
        # self.setWindowFlags(Qt.FramelessWindowHint)
        layout = QVBoxLayout()
        self.L = QListWidget()
        layout.addWidget(self.L)
        self.quickWidget = QQuickWidget()
        self.quickWidget.setFocus()
        self.quickWidget.setResizeMode(QQuickWidget.SizeRootObjectToView)
        self.quickWidget.setSource(QUrl('qml.qml'))
        self.Ls = QListWidgetItem(self.L)
        self.Ls.setSizeHint(self.quickWidget.sizeHint())
        self.L.addItem(self.Ls)
        self.L.setItemWidget(self.Ls, self.quickWidget)

        self.quickWidget = QQuickWidget()
        self.quickWidget.setFocus()
        self.quickWidget.setResizeMode(QQuickWidget.SizeRootObjectToView)
        self.quickWidget.setSource(QUrl('qml.qml'))
        self.Ls = QListWidgetItem(self.L)
        self.Ls.setSizeHint(self.quickWidget.sizeHint())
        self.L.addItem(self.Ls)
        self.L.setItemWidget(self.Ls, self.quickWidget)
        # layout.addWidget(self.quickWidget)

        self.lineEdit = QLineEdit()
        layout.addWidget(self.lineEdit)

        send_button = QPushButton('Send')
        send_button.clicked.connect(self.on_send_clicked)
        layout.addWidget(send_button)

        self.setLayout(layout)

        self.sigSendToQml.connect(self.quickWidget.rootObject().sigQmlReceiveStr)
        self.quickWidget.rootObject().sigQmlSendStr.connect(self.slotReceiveFormQml)

    @pyqtSlot()
    def on_send_clicked(self):
        self.sigSendToQml.emit(self.lineEdit.text())

    @pyqtSlot(str)
    def slotReceiveFormQml(self, string):
        print('Received from QML:', string)


if __name__ == '__main__':
    app = QApplication(sys.argv)
    widget = Widget()
    widget.show()
    sys.exit(app.exec_())




import QtQuick 2.9
import QtQuick.Controls 2.2

Rectangle {
    id: root
    width: 400
    height: 300
    color: "transparent"  // 设置背景颜色

    border.color: "red"  // 设置边框颜色
    border.width: 5  // 设置边框宽度
    radius: 10  // 设置圆角半径

    signal sigQmlReceiveStr(string str) //定义接收信号(from QWidget)
signal sigQmlSendStr(string str)    //定义发送信号(to QWidget)
Image {
    id: image
    source: "https://tse4-mm.cn.bing.net/th/id/OIP-C.duz6S7Fvygrqd6Yj_DcXAQHaF7?rs=1&pid=ImgDetMain"  // 设置图片URL
    anchors.centerIn: parent
    width: 200
    height: 200
    fillMode: Image.PreserveAspectFit  // 设置图片填充模式
}


Text {
    id: text
    anchors.centerIn: parent
    color: "red"
    font.pixelSize: 100
    text: qsTr("hello world!")
}

onSigQmlReceiveStr: {               //信号对应槽函数
text.text = str
root.sigQmlSendStr("received: " + str)   //调用信号
}
}