darken selected cross

cross.py

@@ -20,8 +20,9 @@ class Cross():
         self.pos.x=x
         self.pos.y=y
 
-    def draw(self):
+    def draw(self,**kwargs):
-        Color(*(self.color))
+        # override color
+        Color(*(kwargs.get("color",self.color)))
         Rectangle(pos=((self.pos.x-1.5)*self.size,(self.pos.y-0.5)*self.size),size=(3*self.size,self.size))
         Rectangle(pos=((self.pos.x-0.5)*self.size,(self.pos.y-1.5)*self.size),size=(self.size,3*self.size))
 
@@ -234,7 +235,13 @@ class Cross_painter(Widget):
         self.canvas.clear()
         with self.canvas:
             for cross in self.crosses:
-                cross.draw()
+                if cross!=self.selected:
+                    cross.draw()
+                # color selected
+                else:
+                    (r,g,b)=cross.color
+                    # darken
+                    cross.draw(color=(r/2,g/2,b/2))
 
 
     # respond to mouse down
@@ -252,15 +259,9 @@ class Cross_painter(Widget):
 
             # select cross
             if touch.button=="left":
-                # unselect
+                # select cross under touch
-                if self.selected!=None:
-                    self.selected.selected=False
-
-                # find cross under touch
                 self.selected=self.find_cross(Point(touch.x/Cross.size,touch.y/Cross.size))
-                # select
+                self.draw()
-                if self.selected!=None:
-                    self.selected.selected=True
 
 
     # respond to drag