Class

Summary

A subclass of pinboard-object which displays a line drawn between two corners of the area enclosed by the pinboard object.

Package

capi

Superclasses

pinboard-object

Subclasses

arrow-pinboard-object
right-angle-line-pinboard-object

Initargs

:start-x

The x coordinate of the start of the line.

:start-y

The y coordinate of the start of the line.

:end-x

The x coordinate of the end of the line.

:end-y

The y coordinate of the end of the line.

Description

start-x , start-y , end-x and end-y default to values computed from the x , y , width and height . They are used to compute the size of the object, and the proper value of x and y . Note that width and height may be larger, for example to accommodate the label in a labelled-line-pinboard-object, and the x and y are adjusted for that.

To change the end points of the line, call move-line.

A complementary class right-angle-line-pinboard-object is provided which draws a line around the edge of the pinboard object.

Example

(capi:contain 

 (make-instance

  'capi:line-pinboard-object

  :start-x 0 :end-x 100

  :start-y 100 :end-y 0))

See also

move-line
pinboard-layout
Creating graphical objects