framebuf.FrameBuffer lacks attr for width and height

[gvdl]

I've had a look at the underlying C code and it appears that width and height attributes are not implemented.

I'm thinking a class wrapper for FrameBuffer might let me locally cache these attributes before handing off to the C implementation. But python isn't really my first language and that sort of jiggery, pokery is beyond my present skills. Does anybody have any ideas?

Thanks in advance

>>> import framebuf
>>> buf = bytearray(int(64*32/8))
>>> fb = framebuf.FrameBuffer(buf, 64, 32, framebuf.MONO_VLSB)
>>> fb.width
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
AttributeError: 'FrameBuffer' object has no attribute 'width'

[GitHubsSilverBullet]

Subclass with same name is probably the easiest way.

#!/micropython
# -*- coding: UTF-8 -*-
# vim: fileencoding=utf-8: ts=4: sw=4: expandtab:

import framebuf

class FrameBuffer(framebuf.FrameBuffer):

    def __init__(self, buffer, width, height, format, *args):
        self.__w = width
        self.__h = height
        super().__init__(buffer, width, height, format, *args)

    @property
    def width(self):
        return self.__w

    @property
    def height(self):
        return self.__h


W,H = 16,8
buf = bytearray(W//8 * H)
fb = FrameBuffer(buf, W, H, framebuf.MONO_VLSB, W)
print(fb.width, fb.height)

[ricksorensen]

Also see pending pull request #17328