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from enum import IntFlag
import glfw
import typing
from dataclasses import dataclass
if typing.TYPE_CHECKING:
from ..scenes import Scene
SceneLike = typing.TypeAlias('SceneLike', typing.Union[Scene, typing.Type[Scene]])
class ModKey(IntFlag):
SHIFT = glfw.MOD_SHIFT
CONTROL = glfw.MOD_CONTROL
ALT = glfw.MOD_ALT
SUPER = glfw.MOD_SUPER
@dataclass
class KeyboardEvent:
window: typing.Any
keycode: int
scancode: int
action: int
mod_keys: int
def has_modkey(self, modkey: ModKey):
return bool(self.mod_keys & modkey)
class KeyboardCallbackBuilder:
def __init__(self, app):
self.app = app
self.scene = None
self.required_mod_keys = ModKey(0)
def build(self, callback: typing.Callable[[KeyboardEvent], None]):
KeyboardCallback(self.required_mod_keys, callback)
def only_in_scene(self, scene: 'SceneLike'):
self.scene = scene
return self
def with_mod_key(self, mod_key: ModKey):
self.required_mod_keys |= mod_key
return self
class KeyboardCallback:
def __init__(self, required_mod_keys, callback: typing.Callable[[KeyboardEvent], None]):
self.required_mod_keys = required_mod_keys
self.callback = callback
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