async def draw_rect(self, touch):
from kivy.graphics import Line, Color, Rectangle, InstructionGroup
from kivy.utils import get_random_color
inst_group = InstructionGroup()
self.canvas.add(inst_group)
inst_group.add(Color(*get_random_color()))
line = Line(width=2)
inst_group.add(line)
ox, oy = self.to_local(*touch.opos)
on_touch_move_was_fired = False
async for __ in ak.rest_of_touch_moves(self, touch):
# Don't await anything during this async-for-loop
on_touch_move_was_fired = True
x, y = self.to_local(*touch.pos)
min_x = min(x, ox)
min_y = min(y, oy)
max_x = max(x, ox)
max_y = max(y, oy)
line.rectangle = [min_x, min_y, max_x - min_x, max_y - min_y]
if on_touch_move_was_fired:
inst_group.add(Color(*get_random_color(alpha=.3)))
inst_group.add(
Rectangle(
pos=(min_x, min_y),
size=(
max_x - min_x,
max_y - min_y,
),
))
else:
self.canvas.remove(inst_group)
async def draw_rect(self, touch):
from kivy.graphics import Line, Color, Rectangle, InstructionGroup
from kivy.utils import get_random_color
inst_group = InstructionGroup()
self.canvas.add(inst_group)
inst_group.add(Color(*get_random_color()))
line = Line(width=2)
inst_group.add(line)
ox, oy = x, y = self.to_local(*touch.opos)
async for __ in ak.rest_of_touch_moves(self,
touch,
stop_dispatching=True):
# Don't await anything during the iteration
x, y = self.to_local(*touch.pos)
min_x, max_x = (x, ox) if x < ox else (ox, x)
min_y, max_y = (y, oy) if y < oy else (oy, y)
line.rectangle = (
min_x,
min_y,
max_x - min_x,
max_y - min_y,
)
if x == ox and y == oy:
self.canvas.remove(inst_group)
else:
inst_group.add(Color(*get_random_color(alpha=.3)))
inst_group.add(
Rectangle(
pos=(min_x, min_y),
size=(
max_x - min_x,
max_y - min_y,
),
))
async def _async_main(self):
from asynckivy import rest_of_touch_moves, event
from kivy.graphics import Line, Color, Rectangle, InstructionGroup
from kivy.utils import get_random_color
def will_accept_touch(w, t) -> bool:
return w.collide_point(*t.opos) and (not t.is_mouse_scrolling)
while True:
__, touch = await event(self,
'on_touch_down',
filter=will_accept_touch,
stop_dispatching=True)
inst_group = InstructionGroup()
self.canvas.add(inst_group)
inst_group.add(Color(*get_random_color()))
line = Line(width=2)
inst_group.add(line)
ox, oy = x, y = self.to_local(*touch.opos)
async for __ in rest_of_touch_moves(self,
touch,
stop_dispatching=True):
# Don't await anything during the iteration
x, y = self.to_local(*touch.pos)
min_x, max_x = (x, ox) if x < ox else (ox, x)
min_y, max_y = (y, oy) if y < oy else (oy, y)
line.rectangle = (
min_x,
min_y,
max_x - min_x,
max_y - min_y,
)
if x == ox and y == oy:
self.canvas.remove(inst_group)
else:
inst_group.add(Color(*get_random_color(alpha=.3)))
inst_group.add(
Rectangle(
pos=(min_x, min_y),
size=(
max_x - min_x,
max_y - min_y,
),
))
