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@ -7,19 +7,35 @@ _SWIPE_DISTANCE_THRESHOLD = const(20) # Min pixels in the primary direction
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_SWIPE_VELOCITY_THRESHOLD = const(200) # Min pixels per second
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_SWIPE_RATIO_THRESHOLD = const(30) # Max ratio or directions in %
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SWIPE_UP = const(180)
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SWIPE_DOWN = const(0)
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SWIPE_LEFT = const(90)
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SWIPE_RIGHT = const(270)
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SWIPE_UP = const(0x01)
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SWIPE_DOWN = const(0x02)
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SWIPE_LEFT = const(0x04)
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SWIPE_RIGHT = const(0x08)
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SWIPE_VERTICAL = const(SWIPE_UP | SWIPE_DOWN)
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SWIPE_HORIZONTAL = const(SWIPE_LEFT | SWIPE_RIGHT)
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SWIPE_ALL = const(SWIPE_VERTICAL | SWIPE_HORIZONTAL)
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def degrees(swipe: int) -> int:
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if swipe == SWIPE_UP:
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return 180
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elif swipe == SWIPE_DOWN:
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return 0
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elif swipe == SWIPE_LEFT:
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return 90
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elif swipe == SWIPE_RIGHT:
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return 270
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class Swipe(ui.Widget):
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def __init__(self, area=None, absolute=False):
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def __init__(self, area=None, absolute=False, directions=SWIPE_ALL):
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self.area = area or (0, 0, ui.SCREEN, ui.SCREEN)
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self.absolute = absolute
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self.directions = directions
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self.start_pos = None
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self.start_time = 0
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self.light = None
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self.light_origin = None
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self.light_target = ui.BACKLIGHT_NONE
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@ -30,7 +46,6 @@ class Swipe(ui.Widget):
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temp_time = utime.ticks_ms() / 1000
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# primary now for fading purposes
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if event == io.TOUCH_MOVE and self.start_pos is not None:
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pdx = pos[0] - self.start_pos[0]
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pdy = pos[1] - self.start_pos[1]
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@ -38,25 +53,25 @@ class Swipe(ui.Widget):
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pdxa = abs(pdx)
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pdya = abs(pdy)
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if pdxa < pdya and pdy < 0:
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# check if its vertical scroll up
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velya = abs(pdy / td) if td > 0 else 1
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ratio = int(pdxa / pdya * 100) if pdya > 0 else 100
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if (velya >= _SWIPE_VELOCITY_THRESHOLD and
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pdya >= _SWIPE_DISTANCE_THRESHOLD and
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ratio <= _SWIPE_RATIO_THRESHOLD):
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light = ui.display.backlight()
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if light > self.light_target:
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light -= 5
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ui.display.backlight(light)
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else:
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ui.display.backlight(self.light_target)
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if pdxa > pdya and self.directions & SWIPE_HORIZONTAL:
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# Horizontal direction
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if (pdx > 0 and self.directions & SWIPE_RIGHT) or (pdx < 0 and self.directions & SWIPE_LEFT):
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ui.display.backlight(ui.lerpi(
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self.light_origin,
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self.light_target,
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pdxa / 120 if pdxa < 120 else 1))
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elif pdxa < pdya and self.directions & SWIPE_VERTICAL:
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# Vertical direction
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if (pdy > 0 and self.directions & SWIPE_DOWN) or (pdy < 0 and self.directions & SWIPE_UP):
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ui.display.backlight(ui.lerpi(
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self.light_origin,
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self.light_target,
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pdya / 120 if pdya < 120 else 1))
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elif event == io.TOUCH_START and contains(self.area, pos):
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self.start_time = temp_time
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self.start_pos = pos
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self.light_origin = ui.BACKLIGHT_NORMAL
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ui.display.backlight(self.light_origin)
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elif event == io.TOUCH_END and self.start_pos is not None:
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td = temp_time - self.start_time
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@ -64,24 +79,30 @@ class Swipe(ui.Widget):
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pdy = pos[1] - self.start_pos[1]
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pdxa = abs(pdx)
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pdya = abs(pdy)
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if pdxa > pdya:
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if pdxa > pdya and self.directions & SWIPE_HORIZONTAL:
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# Horizontal direction
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velxa = abs(pdx / td)
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ratio = int(pdya / pdxa * 100) if pdxa > 0 else 100
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if (velxa >= _SWIPE_VELOCITY_THRESHOLD and
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pdxa >= _SWIPE_DISTANCE_THRESHOLD and
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ratio <= _SWIPE_RATIO_THRESHOLD):
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return SWIPE_RIGHT if pdx > 0 else SWIPE_LEFT
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else:
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if pdx > 0 and self.directions & SWIPE_RIGHT:
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return SWIPE_RIGHT
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elif pdx < 0 and self.directions & SWIPE_LEFT:
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return SWIPE_LEFT
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elif pdxa < pdya and self.directions & SWIPE_VERTICAL:
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# Vertical direction
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velya = abs(pdy / td)
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ratio = int(pdxa / pdya * 100) if pdya > 0 else 100
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if (velya >= _SWIPE_VELOCITY_THRESHOLD and
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pdya >= _SWIPE_DISTANCE_THRESHOLD and
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ratio <= _SWIPE_RATIO_THRESHOLD):
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if pdy < 0:
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ui.display.backlight(self.light_origin)
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return SWIPE_DOWN if pdy > 0 else SWIPE_UP
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if pdy > 0 and self.directions & SWIPE_DOWN:
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self.light = None
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return SWIPE_DOWN
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elif pdy < 0 and self.directions & SWIPE_UP:
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self.light = None
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return SWIPE_UP
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# No swipe, reset the state
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self.start_pos = None
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self.start_time = 0
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