def on_touch_move(self, x, y):
if self.start_x is None:
return # not started in our area
dirs = self.directions
pdx = x - self.start_x
pdy = y - self.start_y
pdxa = abs(pdx)
pdya = abs(pdy)
if pdxa > pdya and dirs & SWIPE_HORIZONTAL:
# horizontal direction
if (pdx > 0 and dirs & SWIPE_RIGHT) or (pdx < 0
and dirs & SWIPE_LEFT):
ui.display.backlight(
ui.lerpi(
self.light_origin,
self.light_target,
min(pdxa / _SWIPE_DISTANCE, 1),
))
elif pdxa < pdya and dirs & SWIPE_VERTICAL:
# vertical direction
if (pdy > 0 and dirs & SWIPE_DOWN) or (pdy < 0
and dirs & SWIPE_UP):
ui.display.backlight(
ui.lerpi(
self.light_origin,
self.light_target,
min(pdya / _SWIPE_DISTANCE, 1),
))
def touch(self, event, pos):
if not self.absolute:
pos = rotate(pos)
if event == io.TOUCH_MOVE and self.start_pos is not None:
pdx = pos[0] - self.start_pos[0]
pdy = pos[1] - self.start_pos[1]
pdxa = abs(pdx)
pdya = abs(pdy)
if pdxa > pdya and self.directions & SWIPE_HORIZONTAL:
# Horizontal direction
if (pdx > 0 and self.directions & SWIPE_RIGHT) or (
pdx < 0 and self.directions & SWIPE_LEFT):
ui.display.backlight(
ui.lerpi(
self.light_origin, self.light_target, pdxa /
_SWIPE_DISTANCE if pdxa < _SWIPE_DISTANCE else 1))
elif pdxa < pdya and self.directions & SWIPE_VERTICAL:
# Vertical direction
if (pdy > 0 and self.directions & SWIPE_DOWN) or (
pdy < 0 and self.directions & SWIPE_UP):
ui.display.backlight(
ui.lerpi(
self.light_origin, self.light_target, pdya /
_SWIPE_DISTANCE if pdya < _SWIPE_DISTANCE else 1))
elif event == io.TOUCH_START and contains(self.area, pos):
self.start_pos = pos
self.light_origin = ui.BACKLIGHT_NORMAL
elif event == io.TOUCH_END and self.start_pos is not None:
pdx = pos[0] - self.start_pos[0]
pdy = pos[1] - self.start_pos[1]
pdxa = abs(pdx)
pdya = abs(pdy)
if pdxa > pdya and self.directions & SWIPE_HORIZONTAL:
# Horizontal direction
ratio = pdxa / _SWIPE_DISTANCE if pdxa < _SWIPE_DISTANCE else 1
if ratio * 100 >= self.treshold:
if pdx > 0 and self.directions & SWIPE_RIGHT:
return SWIPE_RIGHT
elif pdx < 0 and self.directions & SWIPE_LEFT:
return SWIPE_LEFT
elif pdxa < pdya and self.directions & SWIPE_VERTICAL:
# Vertical direction
ratio = pdya / _SWIPE_DISTANCE if pdya < _SWIPE_DISTANCE else 1
if ratio * 100 >= self.treshold:
if pdy > 0 and self.directions & SWIPE_DOWN:
return SWIPE_DOWN
elif pdy < 0 and self.directions & SWIPE_UP:
return SWIPE_UP
# No swipe, reset the state
self.start_pos = None
ui.display.backlight(self.light_origin)