forked from OpenPDU/openpdu-libs
36 lines
1.0 KiB
Python
36 lines
1.0 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright (c) 2016 Richard Hull and contributors
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# See LICENSE.rst for details.
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from PIL import Image
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class capabilities(object):
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def capabilities(self, width, height, rotate, mode="1"):
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assert mode in ("1", "RGB", "RGBA")
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assert rotate in (0, 1, 2, 3)
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self._w = width
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self._h = height
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self.width = width if rotate % 2 == 0 else height
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self.height = height if rotate % 2 == 0 else width
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self.size = (self.width, self.height)
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self.bounding_box = (0, 0, self.width - 1, self.height - 1)
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self.rotate = rotate
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self.mode = mode
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def clear(self):
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"""
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Initializes the device memory with an empty (blank) image.
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"""
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self.display(Image.new(self.mode, self.size))
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def preprocess(self, image):
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if self.rotate == 0:
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return image
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angle = self.rotate * -90
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return image.rotate(angle, expand=True).crop((0, 0, self._w, self._h))
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def display(self, image):
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raise NotImplementedError()
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