114 lines
3.9 KiB
Python
114 lines
3.9 KiB
Python
# -*- coding: utf-8 -*-
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#
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# gPodder - A media aggregator and podcast client
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# Copyright (c) 2005-2018 The gPodder Team
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#
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# gPodder is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3 of the License, or
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# (at your option) any later version.
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#
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# gPodder is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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from gi.repository import GObject, Gtk, Pango
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import gpodder
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from gpodder.gtkui.widgets import SpinningProgressIndicator
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_ = gpodder.gettext
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class ProgressIndicator(object):
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# Delayed time until window is shown (for short operations)
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DELAY = 500
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# Time between GUI updates after window creation
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INTERVAL = 100
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def __init__(self, title, subtitle=None, cancellable=False, parent=None):
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self.title = title
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self.subtitle = subtitle
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self.cancellable = cancellable
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self.parent = parent
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self.dialog = None
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self.progressbar = None
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self.indicator = None
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self._initial_message = None
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self._initial_progress = None
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self._progress_set = False
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self.source_id = GObject.timeout_add(self.DELAY, self._create_progress)
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def _on_delete_event(self, window, event):
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if self.cancellable:
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self.dialog.response(Gtk.ResponseType.CANCEL)
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return True
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def _create_progress(self):
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self.dialog = Gtk.MessageDialog(self.parent,
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0, 0, Gtk.ButtonsType.CANCEL, self.subtitle or self.title)
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self.dialog.set_modal(True)
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self.dialog.connect('delete-event', self._on_delete_event)
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self.dialog.set_title(self.title)
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self.dialog.set_deletable(self.cancellable)
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# Avoid selectable text (requires PyGTK >= 2.22)
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if hasattr(self.dialog, 'get_message_area'):
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for label in self.dialog.get_message_area():
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if isinstance(label, Gtk.Label):
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label.set_selectable(False)
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self.dialog.set_response_sensitive(Gtk.ResponseType.CANCEL,
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self.cancellable)
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self.progressbar = Gtk.ProgressBar()
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self.progressbar.set_show_text(True)
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self.progressbar.set_ellipsize(Pango.EllipsizeMode.END)
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# If the window is shown after the first update, set the progress
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# info so that when the window appears, data is there already
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if self._initial_progress is not None:
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self.progressbar.set_fraction(self._initial_progress)
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if self._initial_message is not None:
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self.progressbar.set_text(self._initial_message)
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self.dialog.vbox.add(self.progressbar)
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self.indicator = SpinningProgressIndicator()
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self.dialog.set_image(self.indicator)
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self.dialog.show_all()
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GObject.source_remove(self.source_id)
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self.source_id = GObject.timeout_add(self.INTERVAL, self._update_gui)
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return False
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def _update_gui(self):
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if self.indicator:
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self.indicator.step_animation()
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if not self._progress_set and self.progressbar:
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self.progressbar.pulse()
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return True
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def on_message(self, message):
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if self.progressbar:
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self.progressbar.set_text(message)
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else:
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self._initial_message = message
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def on_progress(self, progress):
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self._progress_set = True
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if self.progressbar:
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self.progressbar.set_fraction(progress)
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else:
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self._initial_progress = progress
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def on_finished(self):
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if self.dialog is not None:
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self.dialog.destroy()
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GObject.source_remove(self.source_id)
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