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#!/usr/bin/env python
# -*- coding: utf-8 -*-
"""
Created on 2019年4月27日
@author: Irony
@site: https://pyqt5.com https://github.com/892768447
@email: 892768447@qq.com
@file: QWebEngineView.JsSignals
@description:
"""
import os
from time import time
from PyQt5.QtCore import QUrl, pyqtSlot, pyqtSignal
from PyQt5.QtWebChannel import QWebChannel
from PyQt5.QtWebEngineWidgets import QWebEngineView, QWebEngineSettings
from PyQt5.QtWidgets import QMessageBox, QWidget, QVBoxLayout, QPushButton
__Author__ = 'Irony'
__Copyright__ = 'Copyright (c) 2019'
class WebEngineView(QWebEngineView):
customSignal = pyqtSignal(str)
def __init__(self, *args, **kwargs):
super(WebEngineView, self).__init__(*args, **kwargs)
self.initSettings()
self.channel = QWebChannel(self)
# 把自身对象传递进去
self.channel.registerObject('Bridge', self)
# 设置交互接口
self.page().setWebChannel(self.channel)
# START #####以下代码可能是在5.6 QWebEngineView刚出来时的bug,必须在每次加载页面的时候手动注入
#### 也有可能是跳转页面后就失效了,需要手动注入,有没有修复具体未测试
# self.page().loadStarted.connect(self.onLoadStart)
# self._script = open('Data/qwebchannel.js', 'rb').read().decode()
# def onLoadStart(self):
# self.page().runJavaScript(self._script)
# END ###########################
# 注意pyqtSlot用于把该函数暴露给js可以调用
@pyqtSlot(str)
def callFromJs(self, text):
QMessageBox.information(self, "提示", "来自js调用:{}".format(text))
def sendCustomSignal(self):
# 发送自定义信号
self.customSignal.emit('当前时间: ' + str(time()))
@pyqtSlot(str)
@pyqtSlot(QUrl)
def load(self, url):
'''
eg: load("https://pyqt5.com")
:param url: 网址
'''
return super(WebEngineView, self).load(QUrl(url))
def initSettings(self):
'''
eg: 初始化设置
'''
# 获取浏览器默认设置
settings = QWebEngineSettings.globalSettings()
# 设置默认编码utf8
settings.setDefaultTextEncoding("utf-8")
# 自动加载图片,默认开启
# settings.setAttribute(QWebEngineSettings.AutoLoadImages,True)
# 自动加载图标,默认开启
# settings.setAttribute(QWebEngineSettings.AutoLoadIconsForPage,True)
# 开启js,默认开启
# settings.setAttribute(QWebEngineSettings.JavascriptEnabled,True)
# js可以访问剪贴板
settings.setAttribute(
QWebEngineSettings.JavascriptCanAccessClipboard, True)
# js可以打开窗口,默认开启
# settings.setAttribute(QWebEngineSettings.JavascriptCanOpenWindows,True)
# 链接获取焦点时的状态,默认开启
# settings.setAttribute(QWebEngineSettings.LinksIncludedInFocusChain,True)
# 本地储存,默认开启
# settings.setAttribute(QWebEngineSettings.LocalStorageEnabled,True)
# 本地访问远程
settings.setAttribute(
QWebEngineSettings.LocalContentCanAccessRemoteUrls, True)
# 本地加载,默认开启
# settings.setAttribute(QWebEngineSettings.LocalContentCanAccessFileUrls,True)
# 监控负载要求跨站点脚本,默认关闭
# settings.setAttribute(QWebEngineSettings.XSSAuditingEnabled,False)
# 空间导航特性,默认关闭
# settings.setAttribute(QWebEngineSettings.SpatialNavigationEnabled,False)
# 支持平超链接属性,默认关闭
# settings.setAttribute(QWebEngineSettings.HyperlinkAuditingEnabled,False)
# 使用滚动动画,默认关闭
settings.setAttribute(QWebEngineSettings.ScrollAnimatorEnabled, True)
# 支持错误页面,默认启用
# settings.setAttribute(QWebEngineSettings.ErrorPageEnabled, True)
# 支持插件,默认关闭
settings.setAttribute(QWebEngineSettings.PluginsEnabled, True)
# 支持全屏应用程序,默认关闭
settings.setAttribute(
QWebEngineSettings.FullScreenSupportEnabled, True)
# 支持屏幕截屏,默认关闭
settings.setAttribute(QWebEngineSettings.ScreenCaptureEnabled, True)
# 支持html5 WebGl,默认开启
settings.setAttribute(QWebEngineSettings.WebGLEnabled, True)
# 支持2d绘制,默认开启
settings.setAttribute(
QWebEngineSettings.Accelerated2dCanvasEnabled, True)
# 支持图标触摸,默认关闭
settings.setAttribute(QWebEngineSettings.TouchIconsEnabled, True)
class Window(QWidget):
def __init__(self, *args, **kwargs):
super(Window, self).__init__(*args, **kwargs)
layout = QVBoxLayout(self)
self.webview = WebEngineView(self)
layout.addWidget(self.webview)
layout.addWidget(QPushButton(
'发送自定义信号', self, clicked=self.webview.sendCustomSignal))
self.webview.windowTitleChanged.connect(self.setWindowTitle)
self.webview.load(QUrl.fromLocalFile(
os.path.abspath('Data/JsSignals.html')))
if __name__ == "__main__":
from PyQt5.QtWidgets import QApplication
import sys
# 开启F12 控制台功能,需要单独通过浏览器打开这个页面
# 这里可以做个保护, 发布软件,启动时把这个环境变量删掉。防止他人通过环境变量开启
os.environ['QTWEBENGINE_REMOTE_DEBUGGING'] = '9966'
app = QApplication(sys.argv)
w = Window()
w.show()
w.move(100, 100)
# 打开调试页面
dw = QWebEngineView()
dw.setWindowTitle('开发人员工具')
dw.load(QUrl('http://127.0.0.1:9966'))
dw.move(600, 100)
dw.show()
sys.exit(app.exec_())
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