A pinboard-object that draws itself as an arrow.
A keyword specifying the position of the arrowhead on the line.
A keyword specifying the direction of the arrowhead.
The length of the arrowhead.
The breadth of the arrowhead, or
nil
.
An instance of the class
arrow-pinboard-object
is a pinboard-object that draws itself as an arrow.
head
must be
:end
,
:middle
or
:start
. The default is
:end
.
head-direction
must be
:forwards
,
:backwards
or
:both
. The default is
:forwards
.
head-length is the length of the arrowhead in pixels. It defaults to 12.
head-breadth
is the breadth of the arrowhead in pixels, or
nil
which means that the breadth is half of
head-length
. The default is
nil
.
head-graphics-args is a plist of graphics state parameters and values used when drawing the arrow head. For information about the graphics state, see the section "Graphics State" in the LispWorks CAPI User Guide .
(capi:contain
(make-instance
'capi:pinboard-layout
:description
(list
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 10
:end-x 105 :end-y 60 )
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 110
:end-x 105 :end-y 160
:head :middle)
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 210
:end-x 105 :end-y 260
:head-direction :both )
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 310
:end-x 105 :end-y 360
:head-graphics-args
'(:foreground :pink)
:head-length 30)
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 410
:end-x 105 :end-y 460
:head-length 30 :head-breadth 5)
(make-instance 'capi:arrow-pinboard-object
:start-x 5 :start-y 510
:end-x 105 :end-y 560
:head-breadth 10
:head-direction :backwards))
:visible-min-width 120
:visible-min-height 620))