src/gpodder/gtkui/widgets.py

   1 # -*- coding: utf-8 -*-
   2 #
   3 # gPodder - A media aggregator and podcast client
   4 # Copyright (c) 2005-2018 The gPodder Team
   5 #
   6 # gPodder is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # gPodder is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  18 #
  19
  20
  21 #
  22 #  widgets.py -- Additional widgets for gPodder
  23 #  Thomas Perl <thp@gpodder.org> 2009-03-31
  24 #
  25
  26
  27 from gi.repository import Gtk
  28
  29
  30 class SpinningProgressIndicator(Gtk.Image):
  31     # Progress indicator loading inspired by glchess from gnome-games-clutter
  32     def __init__(self, size=32):
  33         Gtk.Image.__init__(self)
  34
  35         self._frames = []
  36         self._frame_id = 0
  37
  38         # Load the progress indicator
  39         icon_theme = Gtk.IconTheme.get_default()
  40
  41         try:
  42             icon = icon_theme.load_icon('process-working', size, 0)
  43             width, height = icon.get_width(), icon.get_height()
  44             if width < size or height < size:
  45                 size = min(width, height)
  46             for row in range(height // size):
  47                 for column in range(width // size):
  48                     frame = icon.subpixbuf(column * size, row * size, size, size)
  49                     self._frames.append(frame)
  50             # Remove the first frame (the "idle" icon)
  51             if self._frames:
  52                 self._frames.pop(0)
  53             self.step_animation()
  54         except:
  55             # FIXME: This is not very beautiful :/
  56             self.set_from_icon_name('system-run', Gtk.IconSize.BUTTON)
  57
  58     def step_animation(self):
  59         if len(self._frames) > 1:
  60             self._frame_id += 1
  61             if self._frame_id >= len(self._frames):
  62                 self._frame_id = 0
  63             self.set_from_pixbuf(self._frames[self._frame_id])