Forgot to add files

sugar/canvas/CanvasBox.py

@@ -0,0 +1,43 @@
+import goocanvas
+
+class CanvasBox(goocanvas.Group):
+	VERTICAL = 0
+	HORIZONTAL = 1
+
+	def __init__(self, grid, orientation, padding=0):
+		goocanvas.Group.__init__(self)
+
+		self._grid = grid
+		self._orientation = orientation
+		self._padding = padding
+		self._constraints = {}
+
+		self.connect('child-added', self._child_added_cb)
+		self.connect('child-removed', self._child_removed_cb)
+
+	def set_constraints(self, item, width, height):
+		self._constraints[item] = [width, height]
+
+	def _layout(self):
+		x = self._padding
+		y = self._padding
+
+		i = 0
+		while i < self.get_n_children():
+			item = self.get_child(i)
+			[width, height] = self._constraints[item]
+
+			self._grid.set_constraints(item, x, y, width, height)
+
+			if self._orientation == CanvasBox.VERTICAL:
+				y += height + self._padding
+			else:
+				x += width + self._padding
+
+			i += 1
+
+	def _child_added_cb(self, item, position):
+		self._layout()
+
+	def _child_removed_cb(self, item, position):
+		self._layout()

sugar/canvas/Grid.py

@@ -0,0 +1,39 @@
+import gtk
+import goocanvas
+import cairo
+
+class Grid:
+	COLS = 80.0
+
+	def set_constraints(self, component, x, y, width=-1, height=-1):
+		if isinstance(component, gtk.Window):
+			self._layout_window(component, x, y, width, height)
+		elif isinstance(component, goocanvas.Item):
+			self._layout_item(component, x, y, width, height)
+		elif isinstance(component, goocanvas.CanvasView):
+			self._layout_canvas(component, x, y, width, height)
+
+	def _layout_window(self, window, x, y, width, height):
+		scale = gtk.gdk.screen_width() / Grid.COLS
+
+		window.move(int(x * scale), int(y * scale))
+		window.resize(int(width * scale), int(height * scale))
+
+	def _layout_item(self, item, x, y, width, height):
+		scale = 1200 / Grid.COLS
+
+		matrix = cairo.Matrix(1, 0, 0, 1, 0, 0)
+		matrix.translate(x * scale, y * scale)
+		item.set_transform(matrix)
+
+		if width > 0 and height > 0:
+			try:
+				item.props.width = width * scale
+				item.props.height = height * scale
+			except:
+				item.props.size = width * scale
+
+	def _layout_canvas(self, canvas, x, y, width, height):
+		scale = 1200 / Grid.COLS
+
+		canvas.set_bounds(x * scale, y * scale, width * scale, height * scale)