用Python做一个简易的浏览器
话不多说，直接上代码（主要要安装第三方库）安装指令：
pip install PyQt5
pip install PyQtWebEngine
完整代码：
import sys
from PyQt5.QtCore import *
from PyQt5.QtWidgets import *
from PyQt5.QtWebEngineWidgets import *
from PyQt5.QtGui import QKeySequence
class Browser(QMainWindow):
def __init__(self):
super().__init__()
self.url_bar = QLineEdit()
self.url_bar.returnPressed.connect(self.navigate_to_url)
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.currentChanged.connect(self.current_tab_changed)
self.tabs.setTabsClosable(True)
self.tabs.tabCloseRequested.connect(self.close_current_tab)
self.nav_bar = QToolBar()
self.addToolBar(self.nav_bar)
self.tabs.tabBarDoubleClicked.connect(self.tab_open_doubleclick)
self.tabs.currentChanged.connect(self.current_tab_changed)
self.add_new_tab(QUrl("https://www.baidu.com"), "首页")
self.setCentralWidget(self.tabs)
nav_bar = QToolBar()
self.addToolBar(nav_bar)
back_btn = QAction("后退", self)
back_btn.triggered.connect(self.go_back)
nav_bar.addAction(back_btn)
forward_btn = QAction("前进", self)
forward_btn.triggered.connect(self.go_forward)
nav_bar.addAction(forward_btn)
reload_btn = QAction("刷新", self)
reload_btn.triggered.connect(self.reload_page)
nav_bar.addAction(reload_btn)
home_btn = QAction("首页", self)
home_btn.triggered.connect(self.navigate_home)
nav_bar.addAction(home_btn)
self.url_bar = QLineEdit()
self.url_bar.returnPressed.connect(self.navigate_to_url)
self.nav_bar.addWidget(self.url_bar)
nav_bar.addWidget(self.url_bar)
nav_bar.addSeparator()
self.status = QStatusBar()
self.setStatusBar(self.status)
# 添加书签管理
self.bookmarks = []
self.bookmarks_menu = self.menuBar().addMenu("书签")
self.update_bookmarks()
# 添加历史记录
self.history = []
# 添加下载管理
self.downloads = []
# 添加密码管理
self.passwords = {}
# 添加阅读模式
self.reading_mode = False
# 添加多语言支持
self.language = "中文"
# 添加设置选项
settings_action = QAction("设置", self)
settings_action.triggered.connect(self.show_settings)
self.menuBar().addAction(settings_action)
# 添加隐私模式
self.private_mode = False
# 添加广告拦截
self.ad_block = False
# 添加搜索引擎切换
self.search_engine = "Google"
# 添加快捷键
new_tab_shortcut = QShortcut(QKeySequence("Ctrl+T"), self)
new_tab_shortcut.activated.connect(self.add_new_tab)
# 美化界面
self.setStyleSheet("""
QMainWindow {
background-color: #F0F0F0;
}
QTabWidget::pane {
border: 1px solid #C0C0C0;
background: white;
}
QTabBar::tab {
padding: 8px;
background-color: #E0E0E0;
border: 1px solid #C0C0C0;
border-top-left-radius: 4px;
border-top-right-radius: 4px;
}
QTabBar::tab:selected {
background-color: #FFD700;
}
QToolBar {
background-color: #E0E0E0;
}
QLineEdit {
background-color: #FFFFFF;
}
QStatusBar {
background-color: #E0E0E0;
}
""")
def tab_open_doubleclick(self, i):
if i == -1:
self.add_new_tab()
def update_url(self, q, browser=None):
if browser is None:
browser = self.tabs.currentWidget()
if browser != self.tabs.currentWidget():
return
self.url_bar.setText(q.toString())
self.url_bar.setText(q.toString())
def current_tab_changed(self, i):
qurl = self.tabs.currentWidget().url()
self.update_url(qurl, self.tabs.currentWidget())
def add_new_tab(self, qurl=None, label="新标签页"):
if qurl is None:
qurl = QUrl("https://www.baidu.com")
browser = QWebEngineView()
browser.setUrl(qurl)
i = self.tabs.addTab(browser, label)
self.tabs.setCurrentIndex(i)
browser.urlChanged.connect(lambda qurl, browser=browser: self.update_url(qurl, browser))
browser.loadFinished.connect(lambda _, i=i, browser=browser: self.tabs.setTabText(i, browser.page().title()))
def update_url(self, q, browser=None):
if browser != self.tabs.currentWidget():
return
self.url_bar.setText(q.toString())
def tab_open_doubleclick(self, i):
if i == -1:
self.add_new_tab()
def current_tab_changed(self, i):
qurl = self.tabs.currentWidget().url()
self.update_url(qurl, self.tabs.currentWidget())
def close_current_tab(self, i):
if self.tabs.count() < 2:
return
self.tabs.removeTab(i)
def navigate_home(self):
self.tabs.currentWidget().setUrl(QUrl("https://www.baidu.com"))
def navigate_to_url(self):
q = QUrl(self.url_bar.text())
if q.scheme() == "":
q.setScheme("http")
self.tabs.currentWidget().setUrl(q)
def go_back(self):
self.tabs.currentWidget().back()
def go_forward(self):
self.tabs.currentWidget().forward()
def reload_page(self):
self.tabs.currentWidget().reload()
def update_bookmarks(self):
for bookmark in self.bookmarks:
self.bookmarks_menu.removeAction(bookmark)
self.bookmarks.clear()
for i in range(self.tabs.count()):
qurl = self.tabs.widget(i).url()
title = self.tabs.tabText(i)
action = QAction(title, self)
action.setData(qurl)
action.triggered.connect(self.navigate_to_bookmark)
self.bookmarks.append(action)
self.bookmarks_menu.addAction(action)
def navigate_to_bookmark(self):
action = self.sender()
if action:
qurl = action.data()
self.tabs.currentWidget().setUrl(qurl)
def show_settings(self):
settings_dialog = QDialog(self)
settings_dialog.setWindowTitle("Settings")
settings_dialog.setMinimumSize(300, 200)
layout = QVBoxLayout()
# 添加设置选项
language_label = QLabel("Language:")
language_combo = QComboBox()
language_combo.addItem("English")
language_combo.addItem("Chinese")
language_combo.currentIndexChanged.connect(self.set_language)
language_combo.setCurrentText(self.language)
layout.addWidget(language_label)
layout.addWidget(language_combo)
settings_dialog.setLayout(layout)
settings_dialog.exec_()
def set_language(self, index):
language = "English" if index == 0 else "Chinese"
if language != self.language:
self.language = language
# TODO: 设置浏览器界面语言
if __name__ == "__main__":
app = QApplication(sys.argv)
app.setApplicationName("强大浏览器")
window = Browser()
window.show()
sys.exit(app.exec_())
burning 发表于 2023-7-24 23:21
除了百度啥也干不了,连网址输入框都没有,期待作者后续完善
忘记加了，下面是加了之后的
import sys
from PyQt5.QtCore import QUrl
from PyQt5.QtWidgets import QApplication, QMainWindow, QAction, QToolBar, QLineEdit, QTabWidget, QVBoxLayout, QWidget, QLabel, QComboBox, QDialog, QShortcut
from PyQt5.QtWebEngineWidgets import QWebEngineView
from PyQt5.QtGui import QKeySequence
class Browser(QMainWindow):
def __init__(self):
super().__init__()
self.tabs = QTabWidget()
self.tabs.setDocumentMode(True)
self.tabs.setTabsClosable(True)
self.tabs.tabCloseRequested.connect(self.close_current_tab)
self.tabs.currentChanged.connect(self.current_tab_changed)
self.url_bar = QLineEdit()
self.url_bar.returnPressed.connect(self.navigate_to_url)
self.add_new_tab(QUrl("https://www.baidu.com"), "首页")
self.nav_bar = QToolBar()
self.addToolBar(self.nav_bar)
back_btn = QAction("后退", self)
back_btn.triggered.connect(self.go_back)
self.nav_bar.addAction(back_btn)
forward_btn = QAction("前进", self)
forward_btn.triggered.connect(self.go_forward)
self.nav_bar.addAction(forward_btn)
reload_btn = QAction("刷新", self)
reload_btn.triggered.connect(self.reload_page)
self.nav_bar.addAction(reload_btn)
home_btn = QAction("首页", self)
home_btn.triggered.connect(self.navigate_home)
self.nav_bar.addAction(home_btn)
self.nav_bar.addWidget(self.url_bar)# 将地址栏添加到导航栏中
self.nav_bar.addSeparator()
self.status = self.statusBar()
self.bookmarks = []
self.bookmarks_menu = self.menuBar().addMenu("书签")
self.update_bookmarks()
settings_action = QAction("设置", self)
settings_action.triggered.connect(self.show_settings)
self.menuBar().addAction(settings_action)
new_tab_shortcut = QShortcut(QKeySequence("Ctrl+T"), self)
new_tab_shortcut.activated.connect(self.add_new_tab)
self.language = "英文"# 添加语言属性并设置默认值
self.setStyleSheet("""
QMainWindow {
background-color: #F0F0F0;
}
QTabWidget::pane {
border: 1px solid #C0C0C0;
background: white;
}
QTabBar::tab {
padding: 8px;
background-color: #E0E0E0;
border: 1px solid #C0C0C0;
border-top-left-radius: 4px;
border-top-right-radius: 4px;
}
QTabBar::tab:selected {
background-color: #FFD700;
}
QToolBar {
background-color: #E0E0E0;
}
QLineEdit {
background-color: #FFFFFF;
}
QStatusBar {
background-color: #E0E0E0;
}
""")
layout = QVBoxLayout()
container = QWidget()
layout.addWidget(self.url_bar)
layout.addWidget(self.tabs)
container.setLayout(layout)
self.setCentralWidget(container)
self.nav_bar.addWidget(self.url_bar)
self.url_bar = QLineEdit()
self.url_bar.returnPressed.connect(self.navigate_to_url)
self.nav_bar.addWidget(self.url_bar)
self.show()
def add_new_tab(self, qurl=None, label="新标签页"):
if qurl is None:
qurl = QUrl("https://www.baidu.com")
browser = QWebEngineView()
browser.setUrl(qurl)
i = self.tabs.addTab(browser, label)
self.tabs.setCurrentIndex(i)
browser.urlChanged.connect(lambda qurl, browser=browser: self.update_url(qurl, browser))
browser.loadFinished.connect(lambda _, i=i, browser=browser: self.tabs.setTabText(i, browser.page().title()))
def update_url(self, q, browser=None):
if browser != self.tabs.currentWidget():
return
self.url_bar.setText(q.toString())
def current_tab_changed(self, i):
qurl = self.tabs.currentWidget().url()
self.update_url(qurl, self.tabs.currentWidget())
def close_current_tab(self, i):
if self.tabs.count() < 2:
return
self.tabs.removeTab(i)
def navigate_home(self):
self.tabs.currentWidget().setUrl(QUrl("https://www.baidu.com"))
def navigate_to_url(self):
q = QUrl(self.url_bar.text())
if q.scheme() == "":
q.setScheme("http")
self.tabs.currentWidget().setUrl(q)
def go_back(self):
self.tabs.currentWidget().back()
def go_forward(self):
self.tabs.currentWidget().forward()
def reload_page(self):
self.tabs.currentWidget().reload()
def update_bookmarks(self):
for bookmark in self.bookmarks:
self.bookmarks_menu.removeAction(bookmark)
self.bookmarks.clear()
for i in range(self.tabs.count()):
qurl = self.tabs.widget(i).url()
title = self.tabs.tabText(i)
action = QAction(title, self)
action.setData(qurl)
action.triggered.connect(self.navigate_to_bookmark)
self.bookmarks.append(action)
self.bookmarks_menu.addAction(action)
def navigate_to_bookmark(self):
action = self.sender()
if action:
qurl = action.data()
self.tabs.currentWidget().setUrl(qurl)
def show_settings(self):
settings_dialog = QDialog(self)
settings_dialog.setWindowTitle("设置")
settings_dialog.setMinimumSize(300, 200)
layout = QVBoxLayout()
language_label = QLabel("语言:")
language_combo = QComboBox()
language_combo.addItem("英文")
language_combo.addItem("中文")
language_combo.currentIndexChanged.connect(self.set_language)
language_combo.setCurrentText(self.language)
layout.addWidget(language_label)
layout.addWidget(language_combo)
settings_dialog.setLayout(layout)
settings_dialog.exec_()
def set_language(self, index):
language = "英文" if index == 0 else "中文"
if language != self.language:
self.language = language
# TODO: 设置浏览器界面语言
if __name__ == "__main__":
app = QApplication(sys.argv)
app.setApplicationName("强大浏览器")
window = Browser()
window.show()
sys.exit(app.exec_())
除了百度啥也干不了,连网址输入框都没有,期待作者后续完善 如果能增加更多功能更好，楼主加油 代码还需更完善一些 非常好的创意 厉害，听说浏览器开发极其复杂，简易的也不容易 感谢分享 牛的！希望再更加完善一点{:1_919:} 感谢分享，学习一下 作者加油