119 lines
3.3 KiB
Python
119 lines
3.3 KiB
Python
import time
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from kivy.logger import Logger
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class SwipeBehavior(object):
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def __init__(self, **kwargs):
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object.__init__(self)
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self.swipeenable = True
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self.register_event_type('on_context_menu')
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self.register_event_type('on_swipe_left')
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self.register_event_type('on_swipe_right')
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self.register_event_type('on_swipe_up')
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self.register_event_type('on_swipe_down')
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self.sb_start_point = None
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self.sb_end_point = None
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self.sb_start_time = None
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self.sb_end_time = None
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self.threshold=20
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self.threshold_time = 0.6
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self.bind(on_touch_down=self.on_touchdown)
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self.bind(on_touch_move=self.on_touchmove)
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self.bind(on_touch_up=self.on_touchup)
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def disable_swipe(self):
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self.swipeenable = False
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def enable_swipe(self):
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self.swipeenable = True
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def on_context_menu(self):
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pass
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# Logger.info('SwipeBehavior:on_context_menu fired')
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def on_swipe_left(self):
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pass
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# Logger.info('SwipeBehavior:on_swipe_left fired')
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def on_swipe_right(self):
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pass
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# Logger.info('SwipeBehavior:on_swipe_right fired')
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def on_swipe_up(self):
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pass
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# Logger.info('SwipeBehavior:on_swipe_up fired')
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def on_swipe_down(self):
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pass
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# Logger.info('SwipeBehavior:on_swipe_down fired')
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def on_touchdown(self,o, touch):
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if touch.is_mouse_scrolling:
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# Logger.info('SwipeBehavior:is_mouse_scrolling')
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return False
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if not self.collide_point(touch.x, touch.y):
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return False
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# Logger.info('SwipeBehavior:touch_down fired')
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if self.swipeenable:
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# Logger.info('SwipeBehavior:touch_down fired')
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self.sb_start_point = touch.pos
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self.sb_start_time = time.time()
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def on_touchmove(self,o,touch):
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if self.collide_point(*touch.pos) and self.swipeenable:
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# Logger.info('SwipeBehavior:touch_move fired')
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if self.sb_start_point is None:
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self.sb_start_point = touch.pos
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else:
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self.sb_end_point = touch.pos
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def on_touchup(self,o,touch):
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ret = False
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if self.collide_point(*touch.pos) and self.swipeenable:
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# Logger.info('SwipeBehavior:touch_up fired')
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self.sb_end_point = touch.pos
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self.sb_end_time = time.time()
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self.check_context_menu()
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ret = True
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self.check_swipe()
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self.sb_start_point = None
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self.sb_end_point = None
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self.sb_start_time = None
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self.sb_end_time = None
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def check_context_menu(self):
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if not self.sb_start_time:
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return
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if not self.sb_end_time:
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return
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period_time = self.sb_end_time - self.sb_start_time
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# Logger.info('SwipeBehavior:period_time=%f,threshold_time=%f',
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# period_time, self.threshold_time)
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if period_time >= self.threshold_time:
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self.dispatch('on_context_menu')
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def check_swipe(self):
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if not self.sb_end_point:
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return
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if not self.sb_start_point:
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return
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if abs(self.sb_end_point[0] - self.sb_start_point[0]) > \
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abs(self.sb_end_point[1] - self.sb_start_point[1]):
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Logger.info('SwipeBehavior:check_swipe x>y')
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if self.sb_end_point[0] - self.sb_start_point[0] >= \
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self.threshold:
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self.dispatch('on_swipe_right')
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elif self.sb_start_point[0] - self.sb_end_point[0] >= \
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self.threshold:
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self.dispatch('on_swipe_left')
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else:
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# Logger.info('SwipeBehavior:check_swipe x<y')
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if self.sb_end_point[1] - self.sb_start_point[1] >= \
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self.threshold:
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self.dispatch('on_swipe_up')
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elif self.sb_start_point[1] - self.sb_end_point[1] >= \
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self.threshold:
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self.dispatch('on_swipe_down')
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