LongShortTouchMixin

gistfile1.txt

from kivy.clock import Clock
from kivymd.uix.widget import MDWidget as Widget

LONG_TOUCH_TIME = 0.8


class LongShortTouchMixin(Widget):

    def __init__(self, **kw):
        self.last_touch = None
        self._touch_clock = None
        super().__init__(**kw)

    def on_touch_down(self, touch):
        if not self.collide_point(touch.x, touch.y):
            return False
        self._touch_callback = self.on_short_touch
        self._touch_clock = Clock.schedule_once(self.set_long_touch, LONG_TOUCH_TIME)
        return True

    def set_long_touch(self, dt):
        self._touch_callback = self.on_long_touch

    def on_touch_up(self, touch):
        if touch == self.last_touch:
            return True
        if not self.collide_point(touch.x, touch.y):
            return False
        if not self._touch_clock:
            return self.on_short_touch(touch)
        self.last_touch = touch
        self._touch_clock.cancel()
        return self._touch_callback(touch)

    def on_short_touch(self, touch):
        print('mixin short touch on %r' % self)
        return True

    def on_long_touch(self, touch):
        print('mixin long touch on %r' % self)
        return True