More work on the views layout

shell/view/BuddyMenu.py

@@ -1,5 +1,6 @@
 import gtk
 import gobject
+import hippo
 
 from sugar.graphics.menu import Menu
 from sugar.graphics.canvasicon import CanvasIcon
@@ -22,7 +23,7 @@ class BuddyMenu(Menu):
 			scaled_pixbuf = pixbuf.scale_simple(_ICON_SIZE, _ICON_SIZE,
 												gtk.gdk.INTERP_BILINEAR)
 			del pixbuf
-			icon_item = hippo.Image(pixbuf=scaled_pixbuf)
+			icon_item = hippo.CanvasImage(pixbuf=scaled_pixbuf)
 
 		Menu.__init__(self, buddy.get_name(), icon_item)
 

shell/view/home/MeshBox.py

@@ -8,7 +8,8 @@ from view.BuddyIcon import BuddyIcon
 from sugar.graphics.snowflakelayout import SnowflakeLayout
 import conf
 
-class ActivityView(hippo.CanvasBox):
+class ActivityView(hippo.CanvasBox, hippo.CanvasItem):
+	__gtype_name__ = 'SugarActivityView'
 	def __init__(self, shell, menu_shell, model):
 		hippo.CanvasBox.__init__(self)
 
@@ -35,16 +36,16 @@ class ActivityView(hippo.CanvasBox):
 		self.remove(icon)
 		del self._icons[name]
 
-	def get_size_request(self):
-		size = self._layout.get_size()
-		return [size, size]
-
 	def _clicked_cb(self, item):
 		registry = conf.get_activity_registry()
 		default_type = self._model.get_service().get_type()
 		bundle = registry.get_activity_from_type(default_type)
 		self._shell.join_activity(bundle.get_id(), self._model.get_id())
 
+	def do_allocate(self, width, height):
+		hippo.CanvasBox.do_allocate(self, width, height)
+		self._layout.layout(self)
+
 class MeshBox(hippo.CanvasBox, hippo.CanvasItem):
 	__gtype_name__ = 'SugarMeshBox'
 	def __init__(self, shell, menu_shell):

sugar/graphics/snowflakelayout.py

@@ -9,63 +9,53 @@ class SnowflakeLayout:
 
 	def __init__(self):
 		self._root = None
-		self._children = []
 		self._r = 0
 
 	def set_root(self, icon):
 		self._root = icon
 
-	def add_child(self, icon):
+	def _layout_root(self, box):
-		self._children.append(icon)
+		[width, height] = self._root.get_allocation()
-		self._layout()
 
-	def remove_child(self, icon):
+		x = self._cx - (width / 2)
-		self._children.remove(icon)
+		y = self._cy - (height / 2)
-		self._layout()
 
-	def _layout_root(self):
+		box.move(self._root, int(x), int(y))
-		[width, height] = self._root.get_size_request()
 
-		matrix = cairo.Matrix(1, 0, 0, 1, 0, 0)
+	def _layout_child(self, box, child, index):
-		matrix.translate(self._cx - (width / 2), self._cy - (height / 2))
-		self._root.set_transform(matrix)
-
-	def _layout_child(self, child, index):
 		r = self._r
-		if (len(self._children) > 10):
+		if (len(box.get_children()) > 10):
 			r += SnowflakeLayout._FLAKE_DISTANCE * (index % 3)
 
-		angle = 2 * math.pi / len(self._children) * index
+		angle = 2 * math.pi / len(box.get_children()) * index
 
-		[width, height] = child.get_size_request()
+		[width, height] = child.get_allocation()
 		x = self._cx + math.cos(angle) * r - (width / 2)
 		y = self._cy + math.sin(angle) * r - (height / 2)
 
-		matrix = cairo.Matrix(1, 0, 0, 1, 0, 0)
+		box.move(child, int(x), int(y))
-		matrix.translate(x, y)
-		child.set_transform(matrix)
 
-	def get_size(self):
+	def get_size(self, box):
 		max_child_size = 0
-		for child in self._children:
+		for child in box.get_children():
-			[width, height] = child.get_size_request()
+			[width, height] = child.get_allocation()
 			max_child_size = max (max_child_size, width)
 			max_child_size = max (max_child_size, height)
 
 		return self._r * 2 + max_child_size + \
 			   SnowflakeLayout._FLAKE_DISTANCE * 2
 
-	def _layout(self):
+	def layout(self, box):
 		self._r = SnowflakeLayout._BASE_RADIUS + \
-				  SnowflakeLayout._CHILDREN_FACTOR * len(self._children)
+				  SnowflakeLayout._CHILDREN_FACTOR * len(box.get_children())
 
-		size = self.get_size()
+		size = self.get_size(box)
 		self._cx = size / 2
 		self._cy = size / 2
 
-		self._layout_root()
+		self._layout_root(box)
 
 		index = 0
-		for child in self._children:
+		for child in box.get_children():
-			self._layout_child(child, index)
+			self._layout_child(box, child, index)
 			index += 1