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"""Do stuff to images to prepare them.
"""
from __future__ import annotations
import warnings
from deprecation import deprecated
from PIL import Image
@deprecated(deprecated_in="2021.1", removed_in="", details="use renderWAlphaOffset")
def rasterImageOA( # pylint:disable=missing-function-docstring
image: Image.Image, size: tuple[int, int], alpha: float = 1.0, offsets: tuple[int, int] = (0, 0)
) -> Image.Image:
warnings.warn(
"Call to deprecated function rasterImageOA.", category=DeprecationWarning, stacklevel=2
)
return renderWAlphaOffset(image, size, alpha, offsets)
@deprecated(deprecated_in="2021.1", removed_in="", details="use renderWAlphaOffset")
def rasterImageOffset( # pylint:disable=missing-function-docstring
image: Image.Image, size: tuple[int, int], offsets: tuple[int, int] = (0, 0)
) -> Image.Image:
warnings.warn(
"Call to deprecated function rasterImageOffset.", category=DeprecationWarning, stacklevel=2
)
return renderWAlphaOffset(image, size, 1, offsets)
def renderWAlphaOffset(
image: Image.Image, size: tuple[int, int], alpha: float = 1.0, offsets: tuple[int, int] = (0, 0)
) -> Image.Image:
"""Render an image with offset and alpha to a given size.
Args:
image (Image.Image): pil image to draw
size (tuple[int, int]): width, height as a tuple
alpha (float, optional): alpha transparency. Defaults to 1.0.
offsets (tuple[int, int], optional): x, y offsets as a tuple.
Defaults to (0, 0).
Returns:
Image.Image: new image
"""
imageOffset = Image.new("RGBA", size)
imageOffset.paste(image.convert("RGBA"), offsets, image.convert("RGBA"))
return Image.blend(Image.new("RGBA", size), imageOffset, alpha)
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