1.61.1 Instance variables

format <-> adjustment: vector*

Applicable if format<-columns equals @on. When present it should be a vector with the same number of elements as format<-width. Each element is one of the names left, center or right and determines the placement of the graphical objects in their cell. If format<-direction = vertical left and right should actually be read as top and bottom

The following creates a three column table with the first column aligned to the left, the middle centered and the last to the right:

?- new(D, device),
   new(F, format(horizontal, 3, @on)),
   send(F, adjustment, vector(left, center, right)),
   send(D, format, F),

%  fill the table.
   send_list(D, display,
                         [ '1.1', '1.2', '1.3',
                           '2.1'
                         ]).

See also format->column_sep and format->row_sep.

format <-> column_sep: int

Distance between columns. If format<-columns = @off this is the distance between words of the paragraph. The default is 10 pixels. See also format->row_sep.

format <-> columns: bool

If @on, the graphical objects of the device are placed in a two dimensional grid. When @off the graphicals are places like words in a paragraph of text.

format <-> direction: {horizontal,vertical}

When horizontal and format<-columns equals @off the words are printed as the english do. vertical prints as the chinese do.

If format<-columns = @on, horizontal produces vertical columns.

format <-> row_sep: int

Distance between rows. With format<-direction = vertical this is the distance between columns. The default is 10 pixels.

See also format<->column_sep and format<->adjustment.