Webkit在Gtk3上具有PyGObject线程 [英] Webkit threads with PyGObject on Gtk3

问题描述

我正在尝试将Webkit视图加载到与gtk主线程不同的线程上.

I am trying to load a webkit view on a different thread than main thread for gtk.

我看到了示例 PyGTK，线程和WebKit

我稍作修改以支持PyGObject和GTK3:

I slightly modify for support PyGObject and 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()

结果是一个空窗口，并且从不执​​行休眠后"打印. idle_add调用不起作用.唯一的工作部分是在主线程上注释的调用.

The result it is a empty window and "after sleep" print is never executed. The idle_add call doesn't work. The only work part is the call commented on main thread.

推荐答案

在gdk之前，我需要GLib.threads_init().

I need GLib.threads_init() before gdk's.

就像这样:

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()

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