Aqui está um código de trabalho para uma janela transparente do WebKit.
from gi.repository import WebKit, Gtk, Gdk
import signal
class BackgroundPaneCallbacks:
pass
class BackgroundPaneWebview(WebKit.WebView):
def __init__(self):
WebKit.WebView.__init__(self)
self.set_transparent(True)
self.override_background_color(Gtk.StateFlags.NORMAL, Gdk.RGBA(0,0,0,0))
self.load_html_string('<HTML>'+\
'<STYLE type="text/css">'+\
'BODY { background: rgba(0,0,0,0);}'+\
'</STYLE>'+\
'<BODY>'+\
'Hello World'+\
'</BODY>'+\
'</HTML>',
'file:///')
print("Webview loaded")
class BackgroundPaneWin(Gtk.Window):
def __init__(self, address="127.0.0.1", port=54541):
Gtk.Window.__init__(self)
#Set transparency
screen = self.get_screen()
rgba = screen.get_rgba_visual()
self.set_visual(rgba)
self.override_background_color(Gtk.StateFlags.NORMAL, Gdk.RGBA(0,0,0,0))
#Add all the parts
self.view = BackgroundPaneWebview()
box = Gtk.Box()
self.add(box)
box.pack_start(self.view, True, True, 0)
self.set_decorated(False)
self.connect("destroy", lambda q: Gtk.main_quit())
#Configure
#Show all the parts
self.show_all()
print("Win loaded")
class BackgroundPane:
def __init__(self, params=False):
#Add all the parts
self.root = params['root']
self.win = BackgroundPaneWin()
print("Pane loaded")
def init(self):
pass
def add_widget(self, widget):
pass
class Logger:
def __init__(self, root):
self.root = root
self.log("Logger loaded")
def log(self, msg, level='console'):
if level=='console':
print msg
class Handlers:
pass
class App:
def __init__(self, params={}):
#Get screen geometry
s = Gdk.Screen.get_default()
params['w'] = s.get_width()
params['h'] = s.get_height()
#Store params
self.params = params
self.log = Logger(self).log
self.handlers = Handlers()
#Get all components
bg = BackgroundPane({'root':self,
})
#Store all components
self.components = {}
self.components['bg'] = bg
#Make sure everything is started
#Make sure Ctl-C works
signal.signal(signal.SIGINT, signal.SIG_DFL)
def run(self):
Gtk.main()
if __name__ == '__main__':
print("Loading app...")
app = App()
app.run()