40 lines
1.4 KiB
Python
40 lines
1.4 KiB
Python
from abc import ABC
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from pathlib import Path
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from typing import Optional, Any
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import pyglet
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class Style(ABC):
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"""
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This class represent a style that can be attached to a widget.
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All property of the class will be loaded into a pyglet image.
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If the property is associated to only a Path, a simple image will be loaded.
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If the property is associated to a list of Path, an animation will be loaded.
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"""
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def __init_subclass__(cls, **kwargs):
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for name, args in cls.__dict__.items():
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if name.startswith("_"): continue
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if isinstance(args, Path): # if this is a normal path for a normal image
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path = args
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texture = pyglet.image.load(path)
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elif isinstance(args, tuple) and len(args) == 3: # if this is a tuple for an animation
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paths, duration, loop = args
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textures = map(pyglet.image.load, paths)
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texture = pyglet.image.Animation.from_image_sequence(textures, duration, loop)
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else:
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raise ValueError(f"Invalid type : {type(args)}")
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setattr(cls, name, texture)
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@classmethod
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def get(cls, item: str, default: Any = None) -> Optional[pyglet.image.AbstractImage]:
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return getattr(cls, item, default)
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def __class_getitem__(cls, item: str) -> Optional[pyglet.image.AbstractImage]:
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return cls.get(item)
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