In Daniel's case, we can clearly see that he deals with the principle of inclusiveness, which is one of the main laws of perceptual organization.
The main idea of this principle is to show that due to the figure being formed by certain objects in the room, we tend to focus on them rather than any other objects in the room.
When Daniel walks into the room, his brain connects the TV and couch with invisible dots and these two objects automatically come in the foreground while the rest of the objects in the room come into the background, thus becoming less important for the boy's perception.