143 lines
4.5 KiB
Python
143 lines
4.5 KiB
Python
"""
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The :mod:`webapp` module contains a WebApp class which can be used to create simple "app windows"
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for websites. To use it, do this::
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from webapp import WebApp
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app = WebApp('GMail', 'https://mail.google.com', 'gmail.png')
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app.run()
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.. note:
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If your site needs Flash Player, you'll need the appropriate Flash Player plugin installed
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system-wide. For WebKit, this is the NPAPI plugin, and for WebEngine, this is the PPAPI plugin.
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"""
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import sys
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from PyQt5 import QtCore, QtGui, QtWidgets
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try:
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from PyQt5 import QtWebEngineWidgets
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HAS_WEBENGINE = True
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except ImportError:
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HAS_WEBENGINE = False
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try:
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from PyQt5 import QtWebKit, QtWebKitWidgets
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HAS_WEBKIT = True
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except ImportError:
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HAS_WEBKIT = False
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if HAS_WEBENGINE:
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SETTINGS = [
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QtWebEngineWidgets.QWebEngineSettings.PluginsEnabled,
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QtWebEngineWidgets.QWebEngineSettings.JavascriptCanAccessClipboard,
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QtWebEngineWidgets.QWebEngineSettings.LocalContentCanAccessRemoteUrls
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]
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WebView = QtWebEngineWidgets.QWebEngineView
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elif HAS_WEBKIT:
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SETTINGS = [
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QtWebKit.QWebSettings.AutoLoadImages,
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QtWebKit.QWebSettings.JavascriptEnabled,
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QtWebKit.QWebSettings.JavaEnabled,
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QtWebKit.QWebSettings.PluginsEnabled,
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QtWebKit.QWebSettings.JavascriptCanOpenWindows,
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QtWebKit.QWebSettings.JavascriptCanCloseWindows,
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QtWebKit.QWebSettings.JavascriptCanAccessClipboard,
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QtWebKit.QWebSettings.DeveloperExtrasEnabled,
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QtWebKit.QWebSettings.OfflineStorageDatabaseEnabled,
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QtWebKit.QWebSettings.OfflineWebApplicationCacheEnabled,
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QtWebKit.QWebSettings.LocalStorageEnabled,
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QtWebKit.QWebSettings.LocalContentCanAccessRemoteUrls,
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QtWebKit.QWebSettings.LocalContentCanAccessFileUrls,
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QtWebKit.QWebSettings.AcceleratedCompositingEnabled
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]
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WebView = QtWebKitWidgets.QWebView
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class WebPage(QtWebKitWidgets.QWebPage):
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"""Custom class for overriding the user agent to make WebKit look like Chrome"""
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def userAgentForUrl(self, url):
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return 'Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) ' \
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'Chrome/28.0.1500.52 Safari/537.36'
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else:
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print('Cannot detect either QtWebEngine or QtWebKit!')
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sys.exit(1)
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class WebWindow(QtWidgets.QWidget):
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"""
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Window
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"""
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def __init__(self, title, url, icon, parent=None):
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"""
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Create the window
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"""
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super().__init__(parent)
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self.setWindowTitle(title)
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self.setWindowIcon(QtGui.QIcon(icon))
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self.setContentsMargins(0, 0, 0, 0)
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self.layout = QtWidgets.QVBoxLayout(self)
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self.layout.setContentsMargins(0, 0, 0, 0)
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self.webview = WebView(self)
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if HAS_WEBKIT:
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self.webview.setPage(WebPage(self.webview))
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for setting in SETTINGS:
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self.webview.settings().setAttribute(setting, True)
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self.webview.titleChanged.connect(self.onTitleChanged)
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self.webview.setUrl(QtCore.QUrl(url))
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self.layout.addWidget(self.webview)
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def onTitleChanged(self, title):
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"""
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React to title changes
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"""
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if title:
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self.setWindowTitle(title)
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class WebApp(QtWidgets.QApplication):
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"""
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A generic application to open a web page in a desktop app
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"""
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def __init__(self, title, url, icon, hasTray=False, canMinimizeToTray=False):
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"""
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Create an application which loads a URL into a window
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"""
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super().__init__(sys.argv)
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self.beforeHooks = []
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self.afterHooks = []
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self.window = None
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self.title = title
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self.url = url
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self.icon = icon
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self.hasTray = hasTray
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self.canMinimizeToTray = canMinimizeToTray
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self.setWindowIcon(QtGui.QIcon(self.icon))
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def setupTrayIcon(self):
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"""
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Set up the tray icon
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"""
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if not QtWidgets.QSystemTrayIcon.isSystemTrayAvailable():
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# No reason to continue if the OS doesn't support system tray icons
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return
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self.trayIcon = QtWidgets.QSystemTrayIcon(QtGui.QIcon(self.icon), self.window)
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self.trayIcon.show()
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def addBeforeHook(self, hook):
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"""
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Add a function to run before setting everything up
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"""
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if hook:
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self.beforeHooks.append(hook)
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def run(self):
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"""
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Run the app
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"""
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self.window = WebWindow(self.title, self.url, self.icon)
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if self.hasTray:
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self.setupTrayIcon()
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self.window.showMaximized()
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return self.exec()
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