yex.box.Whatsit

yex.box.Whatsit(height=None, width=None, depth=None)

Bases: yex.box.gismo.Gismo

A Gismo which runs some code at the moment it's rendered.

The code runs when the Whatsit is output. Bear in mind that it might never be output.

Again, blame Knuth for the name.

Source code in yex/box/gismo.py

def __init__(self,
             height:Union['yex.value.Dimen',None] = None,
             width:Union['yex.value.Dimen',None] = None,
             depth:Union['yex.value.Dimen',None] = None,
             ):
    self._height = self._require_dimen(height)
    self._depth = self._require_dimen(depth)
    self._width = self._require_dimen(width)
    self._contents = []
    self.parent = None