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import time
import queue
import _thread
import urllib.request, urllib.parse, urllib.error
import gi
from gi.repository import Gdk
from gi.repository import Gtk
from gi.repository import GLib
try:
gi.require_version('WebKit2', '4.0')
from gi.repository import WebKit2
have_webkit = True
except:
have_webkit = False
class UseWebKit: pass
use = UseWebKit
class WebKitMethods(object):
@staticmethod
def create_browser():
return WebKit2.WebView()
@staticmethod
def inject_javascript(browser, script):
browser.execute_script(script)
@staticmethod
def connect_title_changed(browser, callback):
def callback_wrapper(widget, frame, title): callback(title)
browser.connect('notify::title', callback_wrapper)
@staticmethod
def open_uri(browser, html):
browser.load_html(html, 'file:///usr/share/mageiawelcome/')
if use is UseWebKit:
implementation = WebKitMethods
def asynchronous_gtk_message(fun):
def worker(wargs):
(function, args, kwargs) = wargs
function(*args, **kwargs)
def fun2(*args, **kwargs):
GLib.idle_add(worker, (fun, args, kwargs))
return fun2
def synchronous_gtk_message(fun):
class NoResult: pass
def worker(wargs):
(R, function, args, kwargs) = wargs
R.result = function(*args, **kwargs)
def fun2(*args, **kwargs):
class R: result = NoResult
GLib.idle_add(worker, (R, fun, args, kwargs))
while R.result is NoResult: time.sleep(0.01)
return R.result
return fun2
def launch_browser(html, quit_function=None, echo=True):
def no_menu(*args): return True
window = Gtk.Window()
browser = implementation.create_browser()
settings = browser.get_settings()
settings.set_enable_write_console_messages_to_stdout(1)
settings.set_allow_universal_access_from_file_urls(1);
browser.connect('context-menu', no_menu)
box = Gtk.VBox(homogeneous=False, spacing=0)
window.add(box)
if quit_function is not None:
window.connect('destroy', quit_function)
box.pack_start(browser, expand=True, fill=True, padding=0)
window.set_icon_name('preferences-desktop-personal')
window.set_title(_('Welcome to Mageia!'))
window.set_position(Gtk.WindowPosition.CENTER)
window.set_default_size(800, 500)
window.set_size_request(800, 500)
window.set_resizable(False)
window.show_all()
message_queue = queue.Queue()
def title_changed(title):
if title != 'null': message_queue.put(title)
implementation.connect_title_changed(browser, title_changed)
implementation.open_uri(browser, html)
def web_recv():
if message_queue.empty():
return None
else:
msg = message_queue.get()
if echo: print('>>>', msg)
return msg
def web_send(msg):
if echo: print('<<<', msg)
asynchronous_gtk_message(implementation.inject_javascript)(browser, msg)
return browser, web_recv, web_send
def start_gtk_thread():
# Start GTK in its own thread:
Gdk.threads_init()
Gdk.threads_enter()
_thread.start_new_thread(Gtk.main, ())
def kill_gtk_thread():
asynchronous_gtk_message(Gtk.main_quit)()
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