The effect is an oneiric blend on his computer screen that he moves through, struggling with the touchpad mouse.
I prefer to write first drafts as soon as possible after waking, so that the oneiric inscape is still present to me.
If the former be a question of sleep or of the moments preceding sleep, it is oneiric or pre-oneiric.
oneiric o·nei·ric (ō-nī'rĭk)
Of, relating to, or suggestive of dreams.
Of, relating to, or characterizing the clinical state of oneirophrenia.