Source code for main


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"""PySide2 WebEngineWidgets Example"""

import sys
from bookmarkwidget import BookmarkWidget
from browsertabwidget import BrowserTabWidget
from downloadwidget import DownloadWidget
from findtoolbar import FindToolBar
from webengineview import QWebEnginePage, WebEngineView
from PySide2 import QtCore
from PySide2.QtCore import Qt, QUrl
from PySide2.QtGui import QCloseEvent, QKeySequence, QIcon
from PySide2.QtWidgets import (qApp, QAction, QApplication, QDesktopWidget,
    QDockWidget, QLabel, QLineEdit, QMainWindow, QMenu, QMenuBar, QPushButton,
    QStatusBar, QToolBar)
from PySide2.QtWebEngineWidgets import (QWebEngineDownloadItem, QWebEnginePage,
    QWebEngineView)

main_windows = []

[docs]def create_main_window(): """Creates a MainWindow using 75% of the available screen resolution.""" main_win = MainWindow() main_windows.append(main_win) available_geometry = app.desktop().availableGeometry(main_win) main_win.resize(available_geometry.width() * 2 / 3, available_geometry.height() * 2 / 3) main_win.show() return main_win
[docs]def create_main_window_with_browser(): """Creates a MainWindow with a BrowserTabWidget.""" main_win = create_main_window() return main_win.add_browser_tab()
[docs]class MainWindow(QMainWindow): """Provides the parent window that includes the BookmarkWidget, BrowserTabWidget, and a DownloadWidget, to offer the complete web browsing experience.""" def __init__(self): super(MainWindow, self).__init__() self.setWindowTitle('PySide2 tabbed browser Example') self._tab_widget = BrowserTabWidget(create_main_window_with_browser) self._tab_widget.enabled_changed.connect(self._enabled_changed) self._tab_widget.download_requested.connect(self._download_requested) self.setCentralWidget(self._tab_widget) self.connect(self._tab_widget, QtCore.SIGNAL("url_changed(QUrl)"), self.url_changed) self._bookmark_dock = QDockWidget() self._bookmark_dock.setWindowTitle('Bookmarks') self._bookmark_widget = BookmarkWidget() self._bookmark_widget.open_bookmark.connect(self.load_url) self._bookmark_widget.open_bookmark_in_new_tab.connect(self.load_url_in_new_tab) self._bookmark_dock.setWidget(self._bookmark_widget) self.addDockWidget(Qt.LeftDockWidgetArea, self._bookmark_dock) self._find_tool_bar = None self._actions = {} self._create_menu() self._tool_bar = QToolBar() self.addToolBar(self._tool_bar) for action in self._actions.values(): if not action.icon().isNull(): self._tool_bar.addAction(action) self._addres_line_edit = QLineEdit() self._addres_line_edit.setClearButtonEnabled(True) self._addres_line_edit.returnPressed.connect(self.load) self._tool_bar.addWidget(self._addres_line_edit) self._zoom_label = QLabel() self.statusBar().addPermanentWidget(self._zoom_label) self._update_zoom_label() self._bookmarksToolBar = QToolBar() self.addToolBar(Qt.TopToolBarArea, self._bookmarksToolBar) self.insertToolBarBreak(self._bookmarksToolBar) self._bookmark_widget.changed.connect(self._update_bookmarks) self._update_bookmarks() def _update_bookmarks(self): self._bookmark_widget.populate_tool_bar(self._bookmarksToolBar) self._bookmark_widget.populate_other(self._bookmark_menu, 3) def _create_menu(self): file_menu = self.menuBar().addMenu("&File") exit_action = QAction(QIcon.fromTheme("application-exit"), "E&xit", self, shortcut = "Ctrl+Q", triggered=qApp.quit) file_menu.addAction(exit_action) navigation_menu = self.menuBar().addMenu("&Navigation") style_icons = ':/qt-project.org/styles/commonstyle/images/' back_action = QAction(QIcon.fromTheme("go-previous", QIcon(style_icons + 'left-32.png')), "Back", self, shortcut = QKeySequence(QKeySequence.Back), triggered = self._tab_widget.back) self._actions[QWebEnginePage.Back] = back_action back_action.setEnabled(False) navigation_menu.addAction(back_action) forward_action = QAction(QIcon.fromTheme("go-next", QIcon(style_icons + 'right-32.png')), "Forward", self, shortcut = QKeySequence(QKeySequence.Forward), triggered = self._tab_widget.forward) forward_action.setEnabled(False) self._actions[QWebEnginePage.Forward] = forward_action navigation_menu.addAction(forward_action) reload_action = QAction(QIcon(style_icons + 'refresh-32.png'), "Reload", self, shortcut = QKeySequence(QKeySequence.Refresh), triggered = self._tab_widget.reload) self._actions[QWebEnginePage.Reload] = reload_action reload_action.setEnabled(False) navigation_menu.addAction(reload_action) navigation_menu.addSeparator() new_tab_action = QAction("New Tab", self, shortcut = 'Ctrl+T', triggered = self.add_browser_tab) navigation_menu.addAction(new_tab_action) close_tab_action = QAction("Close Current Tab", self, shortcut = "Ctrl+W", triggered = self._close_current_tab) navigation_menu.addAction(close_tab_action) navigation_menu.addSeparator() history_action = QAction("History...", self, triggered = self._tab_widget.show_history) navigation_menu.addAction(history_action) edit_menu = self.menuBar().addMenu("&Edit") find_action = QAction("Find", self, shortcut = QKeySequence(QKeySequence.Find), triggered = self._show_find) edit_menu.addAction(find_action) edit_menu.addSeparator() undo_action = QAction("Undo", self, shortcut = QKeySequence(QKeySequence.Undo), triggered = self._tab_widget.undo) self._actions[QWebEnginePage.Undo] = undo_action undo_action.setEnabled(False) edit_menu.addAction(undo_action) redo_action = QAction("Redo", self, shortcut = QKeySequence(QKeySequence.Redo), triggered = self._tab_widget.redo) self._actions[QWebEnginePage.Redo] = redo_action redo_action.setEnabled(False) edit_menu.addAction(redo_action) edit_menu.addSeparator() cut_action = QAction("Cut", self, shortcut = QKeySequence(QKeySequence.Cut), triggered = self._tab_widget.cut) self._actions[QWebEnginePage.Cut] = cut_action cut_action.setEnabled(False) edit_menu.addAction(cut_action) copy_action = QAction("Copy", self, shortcut = QKeySequence(QKeySequence.Copy), triggered = self._tab_widget.copy) self._actions[QWebEnginePage.Copy] = copy_action copy_action.setEnabled(False) edit_menu.addAction(copy_action) paste_action = QAction("Paste", self, shortcut = QKeySequence(QKeySequence.Paste), triggered = self._tab_widget.paste) self._actions[QWebEnginePage.Paste] = paste_action paste_action.setEnabled(False) edit_menu.addAction(paste_action) edit_menu.addSeparator() select_all_action = QAction("Select All", self, shortcut = QKeySequence(QKeySequence.SelectAll), triggered = self._tab_widget.select_all) self._actions[QWebEnginePage.SelectAll] = select_all_action select_all_action.setEnabled(False) edit_menu.addAction(select_all_action) self._bookmark_menu = self.menuBar().addMenu("&Bookmarks") add_bookmark_action = QAction("&Add Bookmark", self, triggered = self._add_bookmark) self._bookmark_menu.addAction(add_bookmark_action) add_tool_bar_bookmark_action = QAction("&Add Bookmark to Tool Bar", self, triggered = self._add_tool_bar_bookmark) self._bookmark_menu.addAction(add_tool_bar_bookmark_action) self._bookmark_menu.addSeparator() tools_menu = self.menuBar().addMenu("&Tools") download_action = QAction("Open Downloads", self, triggered = DownloadWidget.open_download_directory) tools_menu.addAction(download_action) window_menu = self.menuBar().addMenu("&Window") window_menu.addAction(self._bookmark_dock.toggleViewAction()) window_menu.addSeparator() zoom_in_action = QAction(QIcon.fromTheme("zoom-in"), "Zoom In", self, shortcut = QKeySequence(QKeySequence.ZoomIn), triggered = self._zoom_in) window_menu.addAction(zoom_in_action) zoom_out_action = QAction(QIcon.fromTheme("zoom-out"), "Zoom Out", self, shortcut = QKeySequence(QKeySequence.ZoomOut), triggered = self._zoom_out) window_menu.addAction(zoom_out_action) reset_zoom_action = QAction(QIcon.fromTheme("zoom-original"), "Reset Zoom", self, shortcut = "Ctrl+0", triggered = self._reset_zoom) window_menu.addAction(reset_zoom_action) about_menu = self.menuBar().addMenu("&About") about_action = QAction("About Qt", self, shortcut = QKeySequence(QKeySequence.HelpContents), triggered=qApp.aboutQt) about_menu.addAction(about_action) def add_browser_tab(self): return self._tab_widget.add_browser_tab() def _close_current_tab(self): if self._tab_widget.count() > 1: self._tab_widget.close_current_tab() else: self.close() def close_event(self, event): main_windows.remove(self) event.accept() def load(self): url_string = self._addres_line_edit.text().strip() if url_string: self.load_url_string(url_string) def load_url_string(self, url_s): url = QUrl.fromUserInput(url_s) if (url.isValid()): self.load_url(url) def load_url(self, url): self._tab_widget.load(url) def load_url_in_new_tab(self, url): self.add_browser_tab().load(url) def url_changed(self, url): self._addres_line_edit.setText(url.toString()) def _enabled_changed(self, web_action, enabled): action = self._actions[web_action] if action: action.setEnabled(enabled) def _add_bookmark(self): index = self._tab_widget.currentIndex() if index >= 0: url = self._tab_widget.url() title = self._tab_widget.tabText(index) icon = self._tab_widget.tabIcon(index) self._bookmark_widget.add_bookmark(url, title, icon) def _add_tool_bar_bookmark(self): index = self._tab_widget.currentIndex() if index >= 0: url = self._tab_widget.url() title = self._tab_widget.tabText(index) icon = self._tab_widget.tabIcon(index) self._bookmark_widget.add_tool_bar_bookmark(url, title, icon) def _zoom_in(self): new_zoom = self._tab_widget.zoom_factor() * 1.5 if (new_zoom <= WebEngineView.maximum_zoom_factor()): self._tab_widget.set_zoom_factor(new_zoom) self._update_zoom_label() def _zoom_out(self): new_zoom = self._tab_widget.zoom_factor() / 1.5 if (new_zoom >= WebEngineView.minimum_zoom_factor()): self._tab_widget.set_zoom_factor(new_zoom) self._update_zoom_label() def _reset_zoom(self): self._tab_widget.set_zoom_factor(1) self._update_zoom_label() def _update_zoom_label(self): percent = int(self._tab_widget.zoom_factor() * 100) self._zoom_label.setText("{}%".format(percent)) def _download_requested(self, item): # Remove old downloads before opening a new one for old_download in self.statusBar().children(): if type(old_download).__name__ == 'download_widget' and \ old_download.state() != QWebEngineDownloadItem.DownloadInProgress: self.statusBar().removeWidget(old_download) del old_download item.accept() download_widget = download_widget(item) download_widget.removeRequested.connect(self._remove_download_requested, Qt.QueuedConnection) self.statusBar().addWidget(download_widget) def _remove_download_requested(self): download_widget = self.sender() self.statusBar().removeWidget(download_widget) del download_widget def _show_find(self): if self._find_tool_bar is None: self._find_tool_bar = FindToolBar() self._find_tool_bar.find.connect(self._tab_widget.find) self.addToolBar(Qt.BottomToolBarArea, self._find_tool_bar) else: self._find_tool_bar.show() self._find_tool_bar.focus_find() def write_bookmarks(self): self._bookmark_widget.write_bookmarks()
if __name__ == '__main__': app = QApplication(sys.argv) main_win = create_main_window() initial_urls = sys.argv[1:] if not initial_urls: initial_urls.append('http://qt.io') for url in initial_urls: main_win.load_url_in_new_tab(QUrl.fromUserInput(url)) exit_code = app.exec_() main_win.write_bookmarks() sys.exit(exit_code)