Python cache.InfoCache类代码示例

 def set_content(self, prefix, content, image_url, suffix):
     """
         populate widget with content
         @param prefix as str
         @param content as str
         @param image url as str
         @param suffix as str
         @thread safe
     """
     try:
         data = None
         stream = None
         if content is not None:
             if image_url is not None:
                 f = Lio.File.new_for_uri(image_url)
                 (status, data, tag) = f.load_contents(self.__cancel)
                 if status:
                     stream = Gio.MemoryInputStream.new_from_data(data,
                                                                  None)
                 else:
                     data = None
             InfoCache.add(prefix, content, data, suffix)
         GLib.idle_add(self.__set_content, content, stream)
     except Exception as e:
         print("InfoContent::set_content: %s" % e)

 def _on_button_clicked(self, button):
     """
         Show file chooser
         @param button as Gtk.button
     """
     dialog = Gtk.FileChooserDialog()
     dialog.add_buttons(Gtk.STOCK_CANCEL, Gtk.ResponseType.CANCEL)
     dialog.add_buttons(Gtk.STOCK_OPEN, Gtk.ResponseType.OK)
     dialog.set_transient_for(Lp().window)
     self.__close_popover()
     response = dialog.run()
     if response == Gtk.ResponseType.OK:
         try:
             f = Lio.File.new_for_path(dialog.get_filename())
             (status, data, tag) = f.load_contents()
             if not status:
                 raise
             if self.__album is not None:
                 Lp().art.save_album_artwork(data, self.__album.id)
             else:
                 for suffix in ["lastfm", "wikipedia", "spotify"]:
                     InfoCache.uncache_artwork(self.__artist, suffix,
                                               button.get_scale_factor())
                     InfoCache.add(self.__artist, None, data, suffix)
                 Lp().art.emit('artist-artwork-changed', self.__artist)
             self._streams = {}
         except Exception as e:
             print("ArtworkSearch::_on_button_clicked():", e)
     dialog.destroy()

 def __on_search_activated(self, action, variant, artist):
     """
         Switch to page
         @param action as SimpleAction
         @param variant as GVariant
         @param artist as str
     """
     InfoCache.remove(artist, 'wikipedia')
     InfoContent.clear(self)
     self.set_visible_child_name('spinner')
     self._spinner.start()
     t = Thread(target=self.__load_page_content, args=(artist,))
     t.daemon = True
     t.start()

 def __really_update_coversize(self, widget):
     """
         Update cover size
         @param widget as Gtk.Range
     """
     self.__cover_tid = None
     value = widget.get_value()
     Lp().settings.set_value('cover-size', GLib.Variant('i', value))
     Lp().art.update_art_size()
     for suffix in ["lastfm", "wikipedia", "spotify"]:
         for artist in Lp().artists.get([]):
             InfoCache.uncache_artwork(artist[1], suffix,
                                       widget.get_scale_factor())
             Lp().art.emit('artist-artwork-changed', artist[1])
     Lp().window.reload_view()

 def _on_reset_confirm(self, button):
     """
         Reset cover
         @param button as Gtk.Button
     """
     self._infobar.hide()
     if self._album is not None:
         Lp().art.remove_album_artwork(self._album)
         Lp().art.clean_album_cache(self._album)
         Lp().art.emit('album-artwork-changed', self._album.id)
     else:
         for suffix in ["lastfm", "wikipedia", "spotify"]:
             InfoCache.uncache_artwork(self._artist, suffix,
                                       button.get_scale_factor())
             Lp().art.emit('artist-artwork-changed', self._artist)
     self._close_popover()

 def _on_activate(self, flowbox, child):
     """
         Use pixbuf as cover
         Reset cache and use player object to announce cover change
     """
     data = self._datas[child.get_child()]
     self._close_popover()
     if self._album is not None:
         Lp().art.save_album_artwork(data, self._album.id)
         Lp().art.clean_album_cache(self._album)
         Lp().art.album_artwork_update(self._album.id)
     else:
         for suffix in ["lastfm", "wikipedia", "spotify"]:
             InfoCache.uncache_artwork(self._artist, suffix,
                                       flowbox.get_scale_factor())
             InfoCache.cache(self._artist, None, data, suffix)
     self._streams = {}

 def _really_update_coversize(self, widget):
     """
         Update cover size
         @param widget as Gtk.Range
     """
     self._cover_tid = None
     value = widget.get_value()
     Lp().settings.set_value('cover-size', GLib.Variant('i', value))
     ArtSize.BIG = value
     for suffix in ["lastfm", "wikipedia", "spotify"]:
         for artist in Lp().artists.get([]):
             InfoCache.uncache_artwork(artist[1], suffix,
                                       widget.get_scale_factor())
             Lp().art.emit('artist-artwork-changed', artist[1])
     # For a 200 album artwork, we want a 60 artist artwork
     ArtSize.ARTIST_SMALL = ArtSize.BIG * 60 / 200
     Lp().window.reload_view()

 def _on_button_release(self, widget, event):
     """
         Reload current view if autoload unchanged
         @param widget as Gtk.Widget
         @param event as Gdk.Event
     """
     if self.__timeout_id is not None:
         GLib.source_remove(self.__timeout_id)
         self.__timeout_id = None
         visible_name = self.__stack.get_visible_child_name()
         # Clear cache if needed
         if visible_name in ['lastfm', 'wikipedia']:
             for artist in self.__current_track.artists:
                 InfoCache.remove(artist, visible_name)
             # stack -> scrolled -> viewport -> grid
             self._on_child_unmap(
                   self.__stack.get_visible_child().get_child().get_child())
         self.__on_current_changed(Lp().player)

    def __set_artwork(self):
        """
            Set artist artwork
        """
        artwork_height = 0
        if Lp().settings.get_value('artist-artwork'):
            if len(self._artist_ids) == 1 and\
                    Lp().settings.get_value('artist-artwork'):
                artist = Lp().artists.get_name(self._artist_ids[0])
                size = ArtSize.ARTIST_SMALL * 2 * self.__scale_factor
                for suffix in ["lastfm", "spotify", "wikipedia"]:
                    uri = InfoCache.get_artwork(artist, suffix, size)
                    if uri is not None:
                        f = Lio.File.new_for_path(uri)
                        (status, data, tag) = f.load_contents(None)
                        stream = Gio.MemoryInputStream.new_from_data(data,
                                                                     None)
                        pixbuf = GdkPixbuf.Pixbuf.new_from_stream_at_scale(
                                                                       stream,
                                                                       size,
                                                                       size,
                                                                       True,
                                                                       None)
                        stream.close()
                        surface = Gdk.cairo_surface_create_from_pixbuf(
                                            pixbuf, self.__scale_factor, None)
                        del pixbuf
                        self.__artwork.set_from_surface(surface)
                        del surface
                        artwork_height = ArtSize.ARTIST_SMALL * 2
                        self.__artwork.get_style_context().remove_class(
                                                                'artwork-icon')
                        self.__artwork.show()
                        self.__artwork_box.show()
                        break
            # Add a default icon
            if len(self._artist_ids) == 1 and artwork_height == 0:
                self.__artwork.set_from_icon_name(
                                            'avatar-default-symbolic',
                                            Gtk.IconSize.DND)
                artwork_height = 32
                self.__artwork.get_style_context().add_class('artwork-icon')
                self.__artwork.show()
                self.__artwork_box.show()

        # Create an self.__empty widget with header height
        ctx = self.__label.get_pango_context()
        layout = Pango.Layout.new(ctx)
        layout.set_text("a", 1)
        # Font scale 2
        font_height = int(layout.get_pixel_size()[1]) * 2

        if artwork_height > font_height:
            self.__empty.set_property('height-request', artwork_height)
        else:
            self.__empty.set_property('height-request', font_height)

 def __init__(self):
     """
         Init artists content
     """
     Gtk.Stack.__init__(self)
     InfoCache.init()
     self._stop = False
     self._cancel = Gio.Cancellable.new()
     self._artist = ""
     self.set_transition_duration(500)
     self.set_transition_type(Gtk.StackTransitionType.CROSSFADE)
     builder = Gtk.Builder()
     builder.add_from_resource('/org/gnome/Lollypop/InfoContent.ui')
     self._content = builder.get_object('content')
     self._image = builder.get_object('image')
     self._menu_found = builder.get_object('menu-found')
     self._menu_not_found = builder.get_object('menu-not-found')
     self.add_named(builder.get_object('widget'), 'widget')
     self.add_named(builder.get_object('notfound'), 'notfound')
     self._spinner = builder.get_object('spinner')
     self.add_named(self._spinner, 'spinner')

 def __on_activate(self, flowbox, child):
     """
         Use pixbuf as cover
         Reset cache and use player object to announce cover change
     """
     try:
         data = self.__datas[child.get_child()]
         self.__close_popover()
         if self.__album is not None:
             Lp().art.save_album_artwork(data, self.__album.id)
         else:
             for suffix in ["lastfm", "wikipedia", "spotify"]:
                 InfoCache.uncache_artwork(self.__artist, suffix,
                                           flowbox.get_scale_factor())
                 InfoCache.add(self.__artist, None, data, suffix)
             Lp().art.emit('artist-artwork-changed', self.__artist)
         self._streams = {}
     except:
         self._infobar_label.set_text(_("Reset artwork?"))
         self._infobar.show()
         # GTK 3.20 https://bugzilla.gnome.org/show_bug.cgi?id=710888
         self._infobar.queue_resize()

 def _load_cache_content(self, prefix, suffix):
     """
         Load from cache
         @param prefix as str
         @param suffix as str
         @return True if loaded
     """
     (content, data) = InfoCache.get(prefix, suffix)
     if content is not None:
         stream = None
         if data is not None:
             stream = Gio.MemoryInputStream.new_from_data(data, None)
         GLib.idle_add(self.__set_content, content, stream)
         return True
     return False

    def _set_artwork(self):
        """
            Set artist artwork
        """
        artwork_height = 0
        if Lp().settings.get_value('artist-artwork'):
            if len(self._artist_ids) == 1 and\
                    Lp().settings.get_value('artist-artwork'):
                artist = Lp().artists.get_name(self._artist_ids[0])

                for suffix in ["lastfm", "spotify", "wikipedia"]:
                    uri = InfoCache.get_artwork(
                                            artist, suffix,
                                            ArtSize.ARTIST_SMALL * 2 *
                                            self._artwork.get_scale_factor())
                    if uri is not None:
                        self._artwork.set_from_file(uri)
                        artwork_height = ArtSize.ARTIST_SMALL * 2
                        self._artwork.get_style_context().remove_class(
                                                                'artwork-icon')
                        self._artwork.show()
                        self._artwork_box.show()
                        break
            # Add a default icon
            if len(self._artist_ids) == 1 and artwork_height == 0:
                self._artwork.set_from_icon_name(
                                            'avatar-default-symbolic',
                                            Gtk.IconSize.DND)
                artwork_height = 32
                self._artwork.get_style_context().add_class('artwork-icon')
                self._artwork.show()
                self._artwork_box.show()

        # Create an self._empty widget with header height
        ctx = self._label.get_pango_context()
        layout = Pango.Layout.new(ctx)
        layout.set_text("a", 1)
        # Font scale 2
        font_height = int(layout.get_pixel_size()[1]) * 2

        if artwork_height > font_height:
            self._empty.set_property('height-request', artwork_height)
        else:
            self._empty.set_property('height-request', font_height)

 def __cache_artists_info(self):
     """
         Cache info for all artists
     """
     # We create cache if needed
     InfoCache.init()
     # Then cache for lastfm/wikipedia/spotify/deezer/...
     for (artist_id, artist, sort) in Lp().artists.get([]):
         if not get_network_available() or\
                 InfoCache.exists(artist):
             continue
         artwork_set = False
         for (api, helper, unused) in InfoCache.WEBSERVICES:
             debug("Downloader::__cache_artists_info(): %[email protected]%s" % (artist,
                                                                  api))
             if helper is None:
                 continue
             try:
                 method = getattr(self, helper)
                 (url, content) = method(artist)
                 if url is not None:
                     s = Lio.File.new_for_uri(url)
                     (status, data, tag) = s.load_contents()
                     if status:
                         artwork_set = True
                         InfoCache.add(artist, content, data, api)
                         debug("Downloader::__cache_artists_info(): %s"
                               % url)
                     else:
                         InfoCache.add(artist, None, None, api)
             except Exception as e:
                 print("Downloader::__cache_artists_info():", e, artist)
                 InfoCache.add(artist, None, None, api)
         if artwork_set:
             GLib.idle_add(Lp().art.emit, 'artist-artwork-changed', artist)
     self.__cache_artists_running = False

 def do_own_render(self, ctx, widget, cell_area, size):
     surface = None
     alpha = False
     if self.rowid in self._surfaces.keys():
         surface = self._surfaces[self.rowid]
     if surface is None:
         for suffix in ["lastfm", "spotify", "wikipedia"]:
             uri = InfoCache.get_artwork(self.artist, suffix, size)
             if uri is not None:
                 pixbuf = GdkPixbuf.Pixbuf.new_from_file_at_size(uri,
                                                                 size,
                                                                 size)
                 surface = Gdk.cairo_surface_create_from_pixbuf(
                                                  pixbuf,
                                                  widget.get_scale_factor(),
                                                  None)
                 self._surfaces[self.rowid] = surface
                 del pixbuf
                 break
     if surface is None:
         alpha = True
         surface = Gtk.IconTheme.get_default().load_surface(
                                          'media-optical-cd-audio-symbolic',
                                          ArtSize.ARTIST_SMALL,
                                          1,
                                          widget.get_window(),
                                          0)
     ctx.translate(cell_area.x, cell_area.y)
     ctx.new_sub_path()
     radius = ArtSize.ARTIST_SMALL / 2
     ctx.arc(ArtSize.ARTIST_SMALL/2, ArtSize.ARTIST_SMALL/2,
             radius, 0, 2 * pi)
     ctx.set_source_rgb(1, 1, 1)
     ctx.fill_preserve()
     ctx.set_line_width(2)
     ctx.set_source_rgba(0, 0, 0, 0.3)
     ctx.stroke_preserve()
     ctx.set_source_surface(surface, 0, 0)
     ctx.clip()
     if alpha:
         ctx.paint_with_alpha(0.5)
     else:
         ctx.paint()