とにかく、あなたが何を望んでいるか、あなたのプログラムがどのように機能し、機能することを意図しているのかを外部から見るのは難しいですが、質問は非常に興味深いように見えました。ポップアップを作成するための最小限のコードをまとめました。
subprocessing
私はbashコマンドとthreading
GUIの組み合わせを使用します。
このコードで注意すべき重要なビット:
threading
と組み合わせて使用するので、使用gtk
する必要がありますgobject.threads_init()
スレッドにない関数はすばやく実行され、制御をgtk.main
-loopに戻します
サブプロセスをスタックしないように呼び出されている間、検索ボタンは非アクティブ化されます。
そしてここにコードがあります:
#!/usr/bin/env python
import gtk
import threading
import gobject
from subprocess import Popen, PIPE
class SearcherProgressBar(object):
"""This is the popup with only progress-bar that pulses"""
def __init__(self):
self._popup = gtk.Window(gtk.WINDOW_POPUP)
self._progress = gtk.ProgressBar()
self._progress.set_text = gtk.Label("Searching...")
self._popup.add(self._progress)
def run(self, search, target):
"""Run spawns a thread so that it can return the process to the
main app and so that we can do a little more than just execute
a subprocess"""
self._popup.show_all()
self._thread = threading.Thread(target=self._search, args=(search, target))
self._thread.start()
#Adding a callback here makes gtk check every 0.42s if thread is done
gobject.timeout_add(420, self._callback)
def _search(self, cmd, target):
"""This is the thread, it makes a subprocess that it communicates with
when it is done it calls the target with stdout and stderr as arguments"""
p = Popen(cmd, stdout=PIPE, stderr=PIPE)
target(*p.communicate())
def _callback(self, *args):
"""The callback checks if thread is still alive, if so, it pulses
return true makes callback continue, while false makes it stop"""
if self._thread.is_alive():
self._progress.pulse()
return True
else:
self._popup.destroy()
return False
class App(object):
def __init__(self):
self._window = gtk.Window()
self._window.connect("destroy", self._destroy)
vbox = gtk.VBox()
self._window.add(vbox)
self.button = gtk.Button()
self.button.set_label('Pretend to search...')
self.button.connect('clicked', self._search)
vbox.pack_start(self.button, False, False, 0)
entry = gtk.Entry()
entry.set_text("This is here to show this gui doesn't freeze...")
entry.connect("changed", self._gui_dont_freeze)
vbox.pack_start(entry, False, False, 0)
self._results = gtk.Label()
vbox.pack_start(self._results, False, False, 0)
self._gui_never_freeze = gtk.Label("Write in entry while searching...")
vbox.pack_start(self._gui_never_freeze, False, False, 0)
self._window.show_all()
def run(self):
gtk.main()
def _gui_dont_freeze(self, widget):
self._gui_never_freeze.set_text(
"You've typed: '{0}'".format(widget.get_text()))
def _search(self, widget):
"""Makes sure you can't stack searches by making button
insensitive, gets a new popup and runs it. Note that the run
function returns quickly and thus this _search function too."""
self.button.set_sensitive(False)
self._results.set_text("")
popup = SearcherProgressBar()
popup.run(['sleep', '10'], self._catch_results)
def _catch_results(self, stdout, stderr):
"""This is where we do something with the output from the subprocess
and allow button to be pressed again."""
self.button.set_sensitive(True)
self._results.set_text("out: {0}\terr: {1}".format(stdout, stderr))
def _destroy(self, *args):
self._window.destroy()
gtk.main_quit()
if __name__ == "__main__":
#This is vital for threading in gtk to work correctly
gobject.threads_init()
a = App()
a.run()