Positions are now expressed in numbers instead of objects.

src/area.py

@@ -43,25 +43,28 @@ class Area(Positionable, Logger):
         if not self.parent:
             return self.get_position()
 
-        return self.get_position() + self.parent.get_screen_position()
+        ox, oy = self.parent.get_screen_position()
+        return ox + self.x, oy + self.y
 
     def get_root_position(self):
         """
         Get the position relative to the root area.
         """
         if not self.parent:
-            return Positionable(0, 0)
+            return 0, 0
 
-        return self.get_position() + self.parent.get_root_position()
+        ox, oy = self.parent.get_root_position()
+        return ox + self.x, oy + self.y
 
     def get_offset(self, offset_area):
         """
         Get the position relative to an ancestor area.
         """
-        if self.parent == offset_area:
-            return self.get_position()
+        if self == offset_area:
+            return 0, 0
 
-        return self.get_position() + self.parent.get_offset(offset_area)
+        ox, oy = self.parent.get_offset(offset_area)
+        return ox + self.x, oy + self.y
 
     def add_area(self, area):
         """
@@ -178,11 +181,11 @@ class Area(Positionable, Logger):
         child_found = False
 
         if self.children:
-            event.set_area(self)
-
             # Delegate to children in reverse order because areas that are
             # added later, should be placed over previously added siblings
             for child in reversed(self.children):
+                event.set_area(self)
+
                 if child.contains_event(event):
                     child_found = True
                     child.delegate_event(event)

src/areas.py

@@ -26,9 +26,9 @@ class RectangularArea(Area):
         return self.width, self.height
 
     def contains_event(self, event):
-        x, y = event.get_offset()
-        return self.x <= x <= self.x + self.width \
-               and self.y <= y <= self.y + self.height
+        ex, ey = event.get_position()
+        return self.x <= ex <= self.x + self.width \
+               and self.y <= ey <= self.y + self.height
 
 
 class CircularArea(Area):

src/driver.py

@@ -21,9 +21,7 @@ class EventDriver(Logger):
         Delegate an event that has been triggered by the event driver to the
         area tree.
         """
-        if self.root_area.contains_event(event):
-            event.set_area(self.root_area)
-            self.root_area.delegate_event(event)
+        self.root_area.delegate_event(event)
 
     def start(self):
         """

src/event.py

@@ -1,3 +1,5 @@
+from copy import copy
+
 from geometry import Positionable
 from touch_objects import OBJECT_NAMES
 
@@ -40,7 +42,7 @@ class Event(Positionable):
 
     def get_offset(self, area):
         ox, oy = area.get_screen_position()
-        return Positionable(self.x - ox, self.y - oy)
+        return self.x - ox, self.y - oy
 
     def get_type(self):
         return self._type
@@ -60,3 +62,6 @@ class Event(Positionable):
 
     def is_immediate_propagation_stopped(self):
         return self.stopped_immidiate
+
+    def clone(self):
+        return copy(self)