kivy: use Clock to improve button responsiveness

gui/kivy/uix/context_menu.py

@@ -6,6 +6,7 @@ from kivy.animation import Animation
 from kivy.uix.floatlayout import FloatLayout
 from kivy.lang import Builder
 from kivy.factory import Factory
+from kivy.clock import Clock
 
 Builder.load_string('''
 <MenuItem@Button>
@@ -33,6 +34,7 @@ class MenuItem(Factory.Button):
     pass
 
 class ContextMenu(Bubble):
+
     def __init__(self, obj, action_list):
         Bubble.__init__(self)
         self.obj = obj
@@ -40,7 +42,11 @@ class ContextMenu(Bubble):
             l = MenuItem()
             l.text = k
             def func(f=v):
-                f(obj)
-                if self.parent: self.parent.hide_menu()
+                Clock.schedule_once(lambda dt: self.hide(), 0.1)
+                Clock.schedule_once(lambda dt: f(obj), 0.15)
             l.on_release = func
             self.ids.buttons.add_widget(l)
+
+    def hide(self):
+        if self.parent:
+            self.parent.hide_menu()

gui/kivy/uix/screens.py

@@ -225,6 +225,9 @@ class SendScreen(CScreen):
         self.screen.address = ''
         self.payment_request = None
 
+    def amount_dialog(self):
+        Clock.schedule_once(lambda dt: self.app.amount_dialog(self, True), .25)
+
     def set_request(self, pr):
         self.payment_request = pr
         self.screen.address = pr.get_requestor()

gui/kivy/uix/ui_screens/send.kv

@@ -53,7 +53,7 @@ SendScreen:
                     id: amount_e
                     default_text: _('Amount')
                     text: s.amount if s.amount else _('Amount')
-                    on_release: app.amount_dialog(s, True)
+                    on_release: s.amount_dialog()
             CardSeparator:
                 opacity: message_selection.opacity
                 color: blue_bottom.foreground_color