Merge pull request kivy#1812 from kivy/1810

uix:splitter fix 1810

Author: tito

kivy/uix/splitter.py

@@ -136,6 +136,9 @@ def __init__(self, **kwargs):
         self._container = None
         self._strip = None
         super(Splitter, self).__init__(**kwargs)
+        self.bind(size=self._do_size,
+                  max_size=self._do_size,
+                  min_size=self._do_size)
 
     def on_sizable_from(self, instance, sizable_from):
         if not instance._container:
@@ -215,6 +218,12 @@ def strip_down(self, instance, touch):
     def on_press(self):
         pass
 
+    def _do_size(self, instance, value):
+        if self.sizable_from[0] in ('l', 'r'):
+            self.width = max(self.min_size, min(self.width, self.max_size))
+        else:
+            self.height = max(self.min_size, min(self.height, self.max_size))
+
     def strip_move(self, instance, touch):
         if touch.grab_current is not instance:
             return False