在Gtk3上使用PyGObject的Webkit線程

Question

我試圖在不同於gtk主線程的線程上加載webkit視圖。

我看到的例子PyGTK, Threads and WebKit

我稍微修改爲支持PyGObject和GTK3：

from gi.repository import Gtk 
from gi.repository import Gdk 
from gi.repository import GObject 
from gi.repository import GLib 
from gi.repository import WebKit 
import threading 
import time 

# Use threads          
Gdk.threads_init() 

class App(object): 
    def __init__(self): 
     window = Gtk.Window() 
     webView = WebKit.WebView() 
     window.add(webView) 
     window.show_all() 

     #webView.load_uri('http://www.google.com') # Here it works on main thread 

     self.window = window 
     self.webView = webView 

    def run(self): 
     Gtk.main() 

    def show_html(self): 
     print 'show html' 

     time.sleep(1) 
     print 'after sleep' 

     # Update widget in main thread    
     GLib.idle_add(self.webView.load_uri, 'http://www.google.com') # Here it doesn't work 

app = App() 

thread = threading.Thread(target=app.show_html) 
thread.start() 

app.run() 
Gtk.main() 

的結果是一個空窗「後睡眠」打印從不執行。 idle_add調用不起作用。唯一的工作部分是對主線程的評論。

Answer 1

我需要gdk之前的GLib.threads_init（）。

就像這樣：

from gi.repository import Gtk 
from gi.repository import Gdk 
from gi.repository import GObject 
from gi.repository import GLib 
from gi.repository import WebKit 
import threading 
import time 

# Use threads          
GLib.threads_init() 

class App(object): 
    def __init__(self): 
     window = Gtk.Window() 
     webView = WebKit.WebView() 
     window.add(webView) 
     window.show_all() 

     #webView.load_uri('http://www.google.com') # Here it works on main thread 

     self.window = window 
     self.webView = webView 

    def run(self): 
     Gtk.main() 

    def show_html(self): 
     print 'show html' 

     time.sleep(1) 
     print 'after sleep' 

     # Update widget in main thread    
     GLib.idle_add(self.webView.load_uri, 'http://www.google.com') # Here it doesn't work 

app = App() 

thread = threading.Thread(target=app.show_html) 
thread.start() 

app.run() 
Gtk.main()