ppstream: only fetch meta data for movies in visible viewport

1 files changed, 53 insertions, 1 deletions

diff --git a/totem/plugin/ppstream.py b/totem/plugin/ppstream.py
index 46bf093..f8fb5c5 100644
--- a/totem/plugin/ppstream.py
+++ b/totem/plugin/ppstream.py
@@ -396,6 +396,10 @@ class PPStream (totem.Plugin):
 		self.imagedownloader.join ()
 
 		self.stop_idle_task ()
+		self.stop_check_movies_visible_range()
+
+		self.threadpool.cancel()
+		self.threadpool.wait_completion()
 
 		self.ppslist.reset()
 
@@ -1173,7 +1177,7 @@ class PPStream (totem.Plugin):
 				   4, repr(class_path),
 				   5, origurl)
 		movie.model_path = model.get_path(it)
-		self.fetch_movie_meta_data(class_path, movie)
+		#self.fetch_movie_meta_data(class_path, movie)
 
 	def fill_all_movies (self, class_path):
 		cls = self.get_movie_class (class_path)
@@ -1297,6 +1301,54 @@ class PPStream (totem.Plugin):
 		selection = treeview.get_selection ()
 		selection.connect ("changed", self.on_movies_selection_changed)
 
+		self.start_check_movies_visible_range()
+
+	def start_check_movies_visible_range(self):
+		self.cmvr_id = gobject.timeout_add(2000,
+						   self.check_movies_visible_range)
+		self.last_visible_movies = []
+		self.last_visible_movies_updated = False
+
+	def stop_check_movies_visible_range(self):
+		if self.cmvr_id:
+			gobject.source_remove(self.cmvr_id)
+		self.last_visible_movies = []
+
+	def check_movies_visible_range(self):
+		treeview = self.treeview['movies']
+		liststore = self.liststore['movies']
+		model = treeview.get_model()
+		visible_range = treeview.get_visible_range()
+		#print 'visible range: ', visible_range
+		if visible_range is None:
+			self.last_visible_movies = []
+			self.last_visible_movies_updated = False
+			return True
+
+		cls = self.get_movie_class(self.movie_class_path)
+		movies = cls.getMovies()
+		visible_movies = []
+		start = visible_range[0][0]
+		end = visible_range[1][0]
+		for item in range(start, end + 1):
+			path = (item,)
+			it = model.get_iter(path)
+			child_it = model.convert_iter_to_child_iter (it)
+			child_model = model.get_model ()
+			child_path = child_model.get_path(child_it)
+			index = child_path[0]
+			visible_movies.append(index)
+			#print child_model.get(child_it, 1)[0]
+		if visible_movies == self.last_visible_movies:
+			if not self.last_visible_movies_updated:
+				for index in visible_movies:
+					movie = movies[index]
+					self.fetch_movie_meta_data(self.movie_class_path, movie)
+		else:
+			self.last_visible_movies_updated = False
+		self.last_visible_movies = visible_movies
+		return True
+
 	def on_movies_selection_changed (self, selection):
 		model, rows = selection.get_selected_rows ()
 		if not rows: