kv 21 mouse event

#mouse.py

from kivy.app import App

from kivy.uix.widget import Widget

class Touch(Widget):

    def on_touch_down(self, touch):

        print("Mouse Down", touch)

        self.ids["button_id"].opacity = 0.5

    def on_touch_move(self, touch):

        print("Mouse Move", touch)

    def on_touch_up(self, touch):

        print("Mouse Up", touch)

        self.ids["button_id"].opacity = 1

class MouseApp(App):

    def build(self):

        return Touch()

MouseApp().run()

---------------------------\

mouse.kv

<Touch>

    Button:

        id:button_id

        size: root.width-200, root.height-200

        pos: 100, 100

        text:"Button"

---------------

#logs

Mouse Down <MouseMotionEvent spos=(0.35875, 0.5516666666666667) pos=(287.0, 331.00000000000006)>

Mouse Up <MouseMotionEvent spos=(0.35875, 0.5516666666666667) pos=(287.0, 331.00000000000006)>

Mouse Down <MouseMotionEvent spos=(0.30125, 0.32833333333333337) pos=(241.0, 197.00000000000003)>

Mouse Move <MouseMotionEvent spos=(0.305, 0.32999999999999996) pos=(244.0, 197.99999999999997)>

Mouse Move <MouseMotionEvent spos=(0.3075, 0.33166666666666667) pos=(246.0, 199.0)>

reference:

https://www.youtube.com/watch?v=yg7n8hP6k1w