Show activities again

shell/view/home/MeshGroup.py

@@ -6,6 +6,23 @@ import conf
 from sugar.canvas.IconItem import IconItem
 from view.home.IconLayout import IconLayout
 from view.BuddyIcon import BuddyIcon
+from sugar.canvas.SnowflakeLayout import SnowflakeLayout
+
+class ActivityView(goocanvas.Group):
+	def __init__(self, shell, menu_shell, model):
+		goocanvas.Group.__init__(self)
+
+		self._model = model
+		self._layout = SnowflakeLayout()
+
+		icon = IconItem(icon_name=model.get_icon_name(),
+						color=model.get_color(), size=80)
+		self.add_child(icon)
+		self._layout.set_root(icon)
+
+	def get_size_request(self):
+		size = self._layout.get_size()
+		return [size, size]
 
 class MeshGroup(goocanvas.Group):
 	def __init__(self, shell, menu_shell):
@@ -15,16 +32,54 @@ class MeshGroup(goocanvas.Group):
 		self._menu_shell = menu_shell
 		self._model = shell.get_model().get_mesh()
 		self._layout = IconLayout(shell.get_grid())
+		self._buddies = {}
+		self._activities = {}
 
 		for buddy_model in self._model.get_buddies():
 			self._add_buddy(buddy_model)
 
 		self._model.connect('buddy-added', self._buddy_added_cb)
+		self._model.connect('buddy-removed', self._buddy_removed_cb)
+
+		for activity_model in self._model.get_activities():
+			self._add_activity(activity_model)
+
+		self._model.connect('activity-added', self._activity_added_cb)
+		self._model.connect('activity-removed', self._activity_removed_cb)
 
 	def _buddy_added_cb(self, model, buddy_model):
-		self._add_buddy(buddy_model) 
+		self._add_buddy(buddy_model)
+
+	def _buddy_removed_cb(self, model, buddy_model):
+		self._remove_buddy(buddy_model) 
+
+	def _activity_added_cb(self, model, activity_model):
+		self._add_activity(activity_model)
+
+	def _activity_removed_cb(self, model, activity_model):
+		self._remove_activity(activity_model) 
 
 	def _add_buddy(self, buddy_model):
 		icon = BuddyIcon(self._shell, self._menu_shell, buddy_model)
+		icon.props.size = 80
 		self.add_child(icon)
+
+		self._buddies[buddy_model.get_name()] = icon
 		self._layout.add_icon(icon)
+
+	def _remove_buddy(self, buddy_model):
+		icon = self._buddies[buddy_model.get_name()]
+		self.remove_child(icon)
+		del self._buddies[buddy_model.get_name()]
+
+	def _add_activity(self, activity_model):
+		icon = ActivityView(self._shell, self._menu_shell, activity_model)
+		self.add_child(icon)
+
+		self._activities[activity_model.get_id()] = icon
+		self._layout.add_icon(icon)
+
+	def _remove_activity(self, activity_model):
+		icon = self._activities[activity_model.get_id()]
+		self.remove_child(icon)
+		del self._activities[activity_model.get_id()]

sugar/canvas/SnowflakeLayout.py

@@ -11,6 +11,7 @@ class SnowflakeLayout:
 	def __init__(self):
 		self._root = None
 		self._children = []
+		self._size = 0
 
 	def set_root(self, icon):
 		self._root = icon
@@ -27,7 +28,7 @@ class SnowflakeLayout:
 		[width, height] = self._root.get_size_request()
 
 		matrix = cairo.Matrix(1, 0, 0, 1, 0, 0)
-		matrix.translate(self._cx, self._cy)
+		matrix.translate(self._cx - (width / 2), self._cy - (height / 2))
 		self._root.set_transform(matrix)
 
 	def _layout_child(self, child, index):
@@ -44,15 +45,17 @@ class SnowflakeLayout:
 		matrix.translate(x, y)
 		child.set_transform(matrix)
 
+	def get_size(self):
+		return self._size
+
 	def _layout(self):
 		self._r = SnowflakeLayout._BASE_RADIUS + \
 				  SnowflakeLayout._CHILDREN_FACTOR * len(self._children)
+		self._size = self._r * 2 + SnowflakeLayout._BORDER + \
+					 SnowflakeLayout._FLAKE_DISTANCE * 2 
 
-		c = self._r + SnowflakeLayout._BORDER + \
+		self._cx = self._size / 2
-			SnowflakeLayout._FLAKE_DISTANCE * 2 
+		self._cy = self._size / 2
-
-		self._cx = c
-		self._cy = c
 
 		self._layout_root()