class_docstr: QWidget wrapper for :class:`~pyqtgraph.HistogramLUTItem`.
  
  All parameters are passed along in creating the HistogramLUTItem.
code: def __init__(self, parent=None, *args, **kargs):
      background = kargs.pop("background", "default")
      GraphicsView.__init__(
          self, parent, useOpenGL=False, background=background
      )
      self.item = HistogramLUTItem(*args, **kargs)
      self.setCentralItem(self.item)
  
      self.orientation = kargs.get("orientation", "vertical")
      if self.orientation == "vertical":
          self.setSizePolicy(
              QtWidgets.QSizePolicy.Policy.Preferred,
              QtWidgets.QSizePolicy.Policy.Expanding,
          )
          self.setMinimumWidth(95)
      else:
          self.setSizePolicy(
              QtWidgets.QSizePolicy.Policy.Expanding,
              QtWidgets.QSizePolicy.Policy.Preferred,
          )
          self.setMinimumHeight(95)
  
file_path: pyqtgraph/pyqtgraph/widgets/HistogramLUTWidget.py
imports: from ..graphicsItems.HistogramLUTItem import HistogramLUTItem
  from ..Qt import QtCore, QtWidgets
  from .GraphicsView import GraphicsView
label_desc: Use image node_id 1 to create a new HistogramLUTWidget object from inherited base classes: GraphicsView with example: obj = HistogramLUTWidget(parent)