41 lines
1 KiB
Python
41 lines
1 KiB
Python
|
from collections import defaultdict
|
||
|
|
from itertools import product
|
||
|
|
from typing import Callable, DefaultDict, Tuple
|
||
|
|
|
||
|
|
from prompt_toolkit.mouse_events import MouseEvent
|
||
|
|
|
||
|
|
__all__ = [
|
||
|
|
"MouseHandlers",
|
||
|
|
]
|
||
|
|
|
||
|
|
|
||
|
|
class MouseHandlers:
|
||
|
|
"""
|
||
|
|
Two dimensional raster of callbacks for mouse events.
|
||
|
|
"""
|
||
|
|
|
||
|
|
def __init__(self) -> None:
|
||
|
|
def dummy_callback(mouse_event: MouseEvent) -> None:
|
||
|
|
"""
|
||
|
|
:param mouse_event: `MouseEvent` instance.
|
||
|
|
"""
|
||
|
|
|
||
|
|
# Map (x,y) tuples to handlers.
|
||
|
|
self.mouse_handlers: DefaultDict[
|
||
|
|
Tuple[int, int], Callable[[MouseEvent], None]
|
||
|
|
] = defaultdict(lambda: dummy_callback)
|
||
|
|
|
||
|
|
def set_mouse_handler_for_range(
|
||
|
|
self,
|
||
|
|
x_min: int,
|
||
|
|
x_max: int,
|
||
|
|
y_min: int,
|
||
|
|
y_max: int,
|
||
|
|
handler: Callable[[MouseEvent], None],
|
||
|
|
) -> None:
|
||
|
|
"""
|
||
|
|
Set mouse handler for a region.
|
||
|
|
"""
|
||
|
|
for x, y in product(range(x_min, x_max), range(y_min, y_max)):
|
||
|
|
self.mouse_handlers[x, y] = handler
|