hover_and_over.py

from kivy.app import App
from kivy.lang import Builder
from kivy.factory import Factory as F
from kivy.core.window import Window as W
from kivy import properties as P


KV = '''
#:import C kivy.utils.rgba

<HoverableButtonLabel>:
    font_size: 20
    on_press: print(f"woohoo, i'm clicked! {self.text}")

    canvas.before:
        Color:
            rgba: C('222222BB') if self.hovered else C('00000000')
        Rectangle:
            pos: self.pos
            size: self.size
        Color:
            rgba: C("FFFFFF")

FloatLayout:
    RecycleView:
        size_hint: .9, .9
        pos_hint: {'center': (.5, .5)}

        data: app.data
        viewclass: 'HoverableButtonLabel'

        RecycleBoxLayout:
            orientation: 'vertical'
            default_size_hint: 1, None
            default_size: 0, 50
            size_hint_y: None
            height: self.minimum_height
'''


class HoverableButtonLabel(F.ButtonBehavior, F.Label):
    mouse_pos = P.ListProperty()
    hovered = P.BooleanProperty(False)

    def __init__(self, **kwargs):
        super().__init__(**kwargs)
        W.bind(mouse_pos=self.save_and_check_hover)
        self.bind(size=self.check_hover, pos=self.check_hover)

    def save_and_check_hover(self, window, mouse_pos, *args):
        self.mouse_pos = mouse_pos
        self.check_hover()

    def check_hover(self, *args):
        if self.mouse_pos:
            self.hovered = self.collide_point(*self.to_widget(*self.mouse_pos))


class Application(App):
    data = P.ListProperty([])

    def build(self):
        self.data = [
            {'text': f'text {i}'}
            for i in range(1000)
        ]

        return Builder.load_string(KV)


if __name__ == "__main__":
    Application().run()