Information Technology Reference
In-Depth Information
Figure 7.3
The software interface of JuTable.
•
Select
The user selects a document by touching it with a single finger. Then
the color of the document will get darker. Figure 7.4a shows the
Select gesture.
•
Move
To move a digital document, a user should first touch the document,
then drag the document on the surface, and last lift up the finger and
complete the gesture. Figure 7.4b shows the Move gesture.
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Deliver
On a large tabletop, it is very hard to touch the user seated far away, so
users cannot deliver a document hand to hand. Throwing the document
on the table will face the problem of inaccuracy. To deliver a digital
document to the other user, we use the working area mapping method.
In each user's working area, there is a radar map widget mapping all
the working areas on the table. See the tiny grids in Figure 7.5b. When
one user, A, wants to deliver a document to another user, B, he can move
the document and stop at the grid in the map representing the working
