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# Example of embedding CEF Python browser using PyGObject library (GTK 3).
# 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
(
"[gkt3.py] CEF Python {ver}"
.
format
(
ver
=
cef
.
__version__
))
print
(
"[gkt3.py] Python {ver}"
.
format
(
ver
=
sys
.
version
[:
6
]))
print
(
"[gkt3.py] 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
=
Gtk3Example
()
SystemExit
(
app
.
run
(
sys
.
argv
))
class
Gtk3Example
(
Gtk
.
Application
):
def
__init__
(
self
):
super
(
Gtk3Example
,
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
(
Gtk3Example
,
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 3 example (PyGObject)"
)
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
()
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