Method from_stream

src/docx/image/png.py:22–32

Return a |Png| instance having header properties parsed from image in `stream`.

(cls, stream)

    @classmethod
    def from_stream(cls, stream):
        """Return a |Png| instance having header properties parsed from image in
        `stream`."""
        parser = _PngParser.parse(stream)

        px_width = parser.px_width
        px_height = parser.px_height
        horz_dpi = parser.horz_dpi
        vert_dpi = parser.vert_dpi

        return cls(px_width, px_height, horz_dpi, vert_dpi)


class _PngParser: