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CallEachWithJs
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‎QWebChannel/CallEachWithJs.py‎

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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Created on 2021/12/15
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@author: Irony
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@site: https://pyqt.site , https://github.com/PyQt5
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@email: 892768447@qq.com
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@file: CallEachWithJs.py
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@description: 与JS之间的互相调用
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"""
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import os
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from PyQt5.QtCore import QUrl, pyqtSlot
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from PyQt5.QtGui import QDesktopServices
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from PyQt5.QtWidgets import (QApplication, QLineEdit, QPushButton, QVBoxLayout,
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QWidget)
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from Lib.WebChannelObject import WebChannelObject
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class Window(QWidget):
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def __init__(self, *args, **kwargs):
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super(Window, self).__init__(*args, **kwargs)
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self.m_obj = WebChannelObject(self)
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# 注册该窗口,可以访问该窗口的属性，槽函数，信号
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# https://doc.qt.io/qt-5/qwidget.html#properties
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# https://doc.qt.io/qt-5/qwidget.html#signals
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# https://doc.qt.io/qt-5/qwidget.html#public-slots
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self.m_obj.registerObject('qtwindow', self)
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self.m_obj.start()
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layout = QVBoxLayout(self)
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self.editTitle = QLineEdit(self, placeholderText='输入标题')
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layout.addWidget(self.editTitle)
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layout.addWidget(QPushButton('修改标题', self, clicked=self.onChangeTitle))
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QDesktopServices.openUrl(
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QUrl.fromLocalFile(
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os.path.join(os.path.dirname(sys.argv[0] or __file__),
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'Data/CallEachWithJs.html')))
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def onChangeTitle(self):
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self.setWindowTitle(self.editTitle.text())
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# ------- 把非槽函数通过pyqtSlot重新暴露 -------
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@pyqtSlot(int, int)
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def resize(self, width, height):
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super().resize(width, height)
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if __name__ == '__main__':
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import cgitb
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import sys
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cgitb.enable(format='text')
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app = QApplication(sys.argv)
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w = Window()
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w.show()
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sys.exit(app.exec_())

‎QWebChannel/Data/CallEachWithJs.html‎

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<!DOCTYPE html>
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<script type="text/javascript" src="./qwebchannel.js"></script>
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<script type="text/javascript">
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function appendText(message) {
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// 添加输出到页面
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var textArea = document.getElementById("textArea");
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output.innerHTML = output.innerHTML + message + "\n";
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}
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window.onload = function () {
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// 创建websocket
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var socket = new WebSocket("ws://localhost:12345");
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socket.onclose = function () {
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appendText("WebSocket连接关闭");
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};
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socket.onerror = function () {
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appendText("WebSocket连接发生错误");
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};
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socket.onopen = function () {
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appendText("WebSocket连接成功");
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// 创建webchannel
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window.channel = new QWebChannel(socket, function (channel) {
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// 重点：把注册的对象全部设为全局,注册了多少个就设置多少个
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window.WebChannelObject = channel.objects.WebChannelObject;
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window.qtwindow = channel.objects.qtwindow;
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// 绑定窗口标题变化信号
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window.qtwindow.windowTitleChanged.connect(function (title) {
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appendText('标题变化：' + title);
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});
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});
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};
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}
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</script>
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</head>
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<body>
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<span>输出：</span><br /><textarea id="output" style="width:400px;height:200px;"></textarea><br /><br />
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<input type="button" value="设置属性（int）= 100" onclick="javascript: window.WebChannelObject.intValue = 100;" />
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<input type="button" value="获取属性（int）"
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onclick="javascript: appendText('intValue:' + window.WebChannelObject.intValue);" /><br /><br />
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<input type="button" value="设置属性（float）= 99.9" onclick="javascript: window.WebChannelObject.floatValue = 99.9;" />
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<input type="button" value="获取属性（float）"
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onclick="javascript: appendText('floatValue:' + window.WebChannelObject.floatValue);" /><br /><br />
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<input type="button" value="设置属性（str）= Irony" onclick="javascript: window.WebChannelObject.strValue = 'Irony';" />
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<input type="button" value="获取属性（str）"
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onclick="javascript: appendText('strValue:' + window.WebChannelObject.strValue);" /><br /><br />
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<input type="button" value="设置属性（bool）= true" onclick="javascript: window.WebChannelObject.boolValue = true;" />
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<input type="button" value="获取属性（bool）"
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onclick="javascript: appendText('boolValue:' + window.WebChannelObject.boolValue);" /><br /><br />
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<!-- <input type="button" value="设置属性（list）= [1, '2', false]"
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onclick="javascript: window.WebChannelObject.listValue = [1, '2', false];" />
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<input type="button" value="获取属性（list）"
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onclick="javascript: appendText('listValue:' + window.WebChannelObject.listValue);" /><br /><br />
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<input type="button" value="设置属性（map）= {'key1': 1, 'key2': '2', 'key3': false}"
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onclick="javascript: window.WebChannelObject.mapValue = {'key1': 1, 'key2': '2', 'key3': false};" />
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<input type="button" value="获取属性（map）"
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onclick="javascript: appendText('mapValue:' + window.WebChannelObject.mapValue);" /><br /><br /> -->
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<input type="button" value="调用加法（testAdd(1, 2)）"
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onclick="javascript: window.WebChannelObject.testAdd(1, 2, function(result) { appendText('testAdd ret:' + result); });" /><br /><br />
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<input type="button" value="设置窗口大小（resize(400, 400)）" onclick="javascript: window.qtwindow.resize(400, 400);" />
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</body>
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</html>

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