ShapePng export error width&height

[mangranzhiairen]

Hi!
I'm trying to create a script to export each shape of each slide as a png image, but I found that each exported shape is a square instead of the original shape.
I noticed that the _get_dpi_width_height function had two variables with the same name, pixel_width, to receive the return value, and ExportPng also set width and height to pixel_width

my code

        imp = ImpressDoc.open_doc(fnm=path, loader=self.__loader)

        slide_count = imp.get_slides_count()
        logger.info(f"Slides count: {slide_count}")

        slides = imp.get_slides()
        for slide in slides:
            shapes = slide.get_shapes()
            for shape in shapes:

                logger.info("shape type:"+shape.get_shape_type())
                logger.info(f"shape size: {shape.size.width.value}*{shape.size.height.value}")
                shape.export_shape_png(fnm="./output/"+str(uuid4())+".png",resolution=300)

export_shape_png

class ShapePng(ShapeExportPngBase):
    def __init__(self, shape: Any, lo_inst: LoInst | None = None):
        
        ShapeExportPngBase.__init__(self, lo_inst=lo_inst)
        self._component = mLo.Lo.qi(XComponent, shape, True)
        self._filter_name = "draw_png_Export"

    def export(self, fnm: PathOrStr, resolution: int = 96) -> None:
    
         ...
        sz = shape.getSize()
        pixel_width, pixel_width = self._get_dpi_width_height(sz.Width, sz.Height, resolution)

        event_data = ExportPng(
            pixel_width=pixel_width,
            pixel_height=pixel_width,
            compression=6,
            interlaced=False,
            translucent=True,
            logical_width=pixel_width,
            logical_height=pixel_width,
        )

Is this designed like this? Or is it a bug?