Inform on relative position to touch event.

render_test/hexmap.kv

@@ -4,6 +4,7 @@ BoxLayout:
     orientation: 'horizontal'
     HexMap:
         id: map
+        coords_display: coords
         size_hint: .8, 1
     MapLabel:
         id: coords

render_test/main.py

@@ -1,5 +1,6 @@
 from kivy.app import App
 from kivy.graphics import *
+from kivy.properties import ObjectProperty
 from kivy.uix.widget import Widget
 from kivy.utils import get_color_from_hex
 
@@ -9,6 +10,7 @@ VERTICAL_BUFFER = 0.8
 
 
 class HexMap(Widget):
+    coords_display = ObjectProperty(None)
 
     def __init__(self, **kwargs):
         super(HexMap, self).__init__(**kwargs)
@@ -17,6 +19,9 @@ class HexMap(Widget):
         # It is crucial to redraw the scene whenever the scene or position changes.
         self.bind(size=self.redraw_scene, pos=self.redraw_scene)
 
+        self.updates = 0
+        self.on_touch_down = self.update_coords
+
     def redraw_scene(self, *args):
         with self.canvas:
             # Clear scene
@@ -52,6 +57,10 @@ class HexMap(Widget):
                         size=(HEX_SIZE, HEX_SIZE),
                     )
 
+    def update_coords(self, touch_event):
+        self.coords_display.text = "Touched at {}".format(touch_event.spos)
+        return True
+
 
 class HexMapApp(App):
     pass