# Example of embedding CEF Python browser using PyGObject/Gtk library.
# Tested with GTK 3.10 and CEF Python v53+.
from cefpython3 import cefpython as cef
# noinspection PyUnresolvedReferences
from gi.repository import GdkX11, Gtk, GObject, GdkPixbuf
import sys
import os
def main():
print("CEF Python {ver}".format(ver=cef.__version__))
print("Python {ver}".format(ver=sys.version[:6]))
print("GTK {major}.{minor}".format(
major=Gtk.get_major_version(),
minor=Gtk.get_minor_version()))
assert cef.__version__ >= "53.1", "CEF Python v53.1+ required to run this"
sys.excepthook = cef.ExceptHook # To shutdown all CEF processes on error
cef.Initialize()
app = GtkExample()
SystemExit(app.run(sys.argv))
class GtkExample(Gtk.Application):
def __init__(self):
super(GtkExample, self).__init__(application_id='cefpython.gtk')
self.browser = None
self.window = None
def run(self, argv):
GObject.threads_init()
GObject.timeout_add(10, self.on_timer)
self.connect("activate", self.on_activate)
self.connect("shutdown", self.on_shutdown)
return super(GtkExample, self).run(argv)
def on_timer(self):
cef.MessageLoopWork()
return True
def on_activate(self, *_):
self.window = Gtk.ApplicationWindow.new(self)
self.window.set_title("Gtk example")
self.window.set_default_size(800, 600)
self.window.connect("configure-event", self.on_configure)
self.window.connect("size-allocate", self.on_size_allocate)
self.window.connect("focus-in-event", self.on_focus_in)
self.window.connect("delete-event", self.on_window_close)
self.setup_icon()
self.window.realize()
window_info = cef.WindowInfo()
window_info.SetAsChild(self.window.get_property("window").get_xid())
self.browser = cef.CreateBrowserSync(window_info,
url="https://www.google.com/")
self.window.show_all()
def on_configure(self, *_):
if self.browser:
self.browser.NotifyMoveOrResizeStarted()
return False
def on_size_allocate(self, _, data):
if self.browser:
self.browser.SetBounds(data.x, data.y, data.width, data.height)
def on_focus_in(self, *_):
if self.browser:
self.browser.SetFocus(True)
return True
return False
def on_window_close(self, *_):
# Close browser and free reference by setting to None
self.browser.CloseBrowser(True)
self.browser = None
def on_shutdown(self, *_):
cef.Shutdown()
def setup_icon(self):
icon = os.path.join(os.path.dirname(__file__), "resources", "gtk.png")
if not os.path.exists(icon):
return
pixbuf = GdkPixbuf.Pixbuf.new_from_file(icon)
transparent = pixbuf.add_alpha(True, 0xff, 0xff, 0xff)
Gtk.Window.set_default_icon_list([transparent])
if __name__ == '__main__':
main()