python - pygtk 中的多线程

Question

我正在尝试学习 pygtk，并且正在为 axel 开发 GUI。

我的问题是我需要在主窗口中显示下载进度。

1. 我使用了两个线程，一个用于下载，第二个用于进度计算。下载是由axel完成的但我的第二个线程直到第一个线程停止才运行。第二个线程没有更新 gui

2. 我用了gobject.idel_add下载开始时它卡在主窗口

3. 尝试使用Gtk.gdk.thread_init()/thread_enter()/thread_leave()它说没有模块gdk在Gtk 。在页面顶部Gtk是从 gi.repository 导入的

顺便说一句，我正在使用 quickly开发应用程序有什么办法可以解决这个问题吗？或任何类似的例子。

Answer 1

检查此线程 separate threads in pygtk application可能对你有用。这里给大家留下了一个pygtk管理多线程的例子。

import threading
import random, time
import gtk
#Initializing the gtk's thread engine
gtk.threads_init()


class FractionSetter(threading.Thread):
    """This class sets the fraction of the progressbar"""

    #Thread event, stops the thread if it is set.
    stopthread = threading.Event()

    def run(self):
        """Run method, this is the code that runs while thread is alive."""

        #Importing the progressbar widget from the global scope
        global progressbar 

        #While the stopthread event isn't setted, the thread keeps going on
        while not self.stopthread.isSet() :
            # Acquiring the gtk global mutex
            gtk.threads_enter()
            #Setting a random value for the fraction
            progressbar.set_fraction(random.random())
            # Releasing the gtk global mutex
            gtk.threads_leave()

            #Delaying 100ms until the next iteration
            time.sleep(0.1)

    def stop(self):
        """Stop method, sets the event to terminate the thread's main loop"""
        self.stopthread.set()

def main_quit(obj):
    """main_quit function, it stops the thread and the gtk's main loop"""
    #Importing the fs object from the global scope
    global fs
    #Stopping the thread and the gtk's main loop
    fs.stop()
    gtk.main_quit()

#Gui bootstrap: window and progressbar
window = gtk.Window()
progressbar = gtk.ProgressBar()
window.add(progressbar)
window.show_all()
#Connecting the 'destroy' event to the main_quit function
window.connect('destroy', main_quit)

#Creating and starting the thread
fs = FractionSetter()
fs.start()

gtk.main()