PyPt5 浏览器实例

---

title: PyPt5 浏览器实例
date: 2018-02-02 13:40:03
tags: Python PyQt5 便携浏览器
categries: Python

导入包

pyQt5.6 以后QtWebEngineWidgets 替代了QtWebWidgets

from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtGui import *
from PyQt5.QtWebEngineWidgets import QWebEngineView
import sys

主窗口

class MainWindow(QMainWindow):
    # noinspection PyUnresolvedReferences
    def __init__(self, *args, **kwargs):
        super().__init__(*args, **kwargs)
        self.setWindowTitle('Bingo Browser')
        self.setWindowIcon(QIcon('images/title.png'))
        # self.resize(900, 600)
        self.showMaximized()
        self.show()

        #浏览器
        self.browser = QWebEngineView()
        url = 'http://tongchengbin.github.io'
        # 指定打开界面的 URL
        self.browser.setUrl(QUrl(url))
        # 添加浏览器到窗口中
        self.setCentralWidget(self.browser)

        ###使用QToolBar创建导航栏，并使用QAction创建按钮
        # 添加导航栏
        navigation_bar = QToolBar('Navigation')
        # 设定图标的大小
        navigation_bar.setIconSize(QSize(16, 16))
        #添加导航栏到窗口中
        self.addToolBar(navigation_bar)

        #QAction类提供了抽象的用户界面action，这些action可以被放置在窗口部件中
        # 添加前进、后退、停止加载和刷新的按钮
        back_button = QAction(QIcon('images/back.png'), 'Back', self)
        next_button = QAction(QIcon('images/go.png'), 'Forward', self)
        stop_button = QAction(QIcon('images/stop.png'), 'stop', self)
        reload_button = QAction(QIcon('icons/refresh.png'), 'reload', self)

        back_button.triggered.connect(self.browser.back)
        next_button.triggered.connect(self.browser.forward)
        stop_button.triggered.connect(self.browser.stop)
        reload_button.triggered.connect(self.browser.reload)

        # 将按钮添加到导航栏上
        navigation_bar.addAction(back_button)
        navigation_bar.addAction(next_button)
        navigation_bar.addAction(stop_button)
        navigation_bar.addAction(reload_button)

        #添加URL地址栏
        self.urlbar = QLineEdit()
        # 让地址栏能响应回车按键信号
        self.urlbar.returnPressed.connect(self.navigate_to_url)

        navigation_bar.addSeparator()
        navigation_bar.addWidget(self.urlbar)

        #让浏览器相应url地址的变化
        self.browser.urlChanged.connect(self.renew_urlbar)

    def navigate_to_url(self):
        q = QUrl(self.urlbar.text())
        if q.scheme() == '':
            q.setScheme('http')
        self.browser.setUrl(q)

    def renew_urlbar(self, q):
        # 将当前网页的链接更新到地址栏
        self.urlbar.setText(q.toString())
        self.urlbar.setCursorPosition(0)

运行实例

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

效果图