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add the capability to dynamically adjust the edge label font

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Robby Findler 2014-09-01 10:46:10 -05:00
parent d6048fd7f1
commit b212f21977
2 changed files with 17 additions and 2 deletions
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14
pkgs/gui-pkgs/gui-doc/mrlib/scribblings/graph/graph-pasteboard-intf.scrbl
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@ -59,6 +59,15 @@ different nodes.
}
@defmethod[(set-edge-label-font [font (is-a?/c font%)]) void?]{
Updates the font used to draw the edge labels.
}
@defmethod[(get-edge-label-font) (is-a?/c font%)]{
Returns the font currently being used to draw the edge labels
}
@defmethod[(draw-edges [dc (is-a?/c dc<%>)]
[left real?]
[top real?]
@ -116,8 +125,9 @@ it just draws the line.
[point3 (is-a?/c point%)]
[point4 (is-a?/c point%)]) void?]{
Updates the arguments @racket[point1], @racket[point2], @racket[point3], @racket[point4] with the coordinates
of an arrowhead for a line that connects (@racket[from-x],@racket[from-y]) to (@racket[to-x],@racket[to-y]).
Updates the arguments @racket[point1], @racket[point2], @racket[point3], @racket[point4]
with the coordinates of an arrowhead for a line that connects (@racket[from-x],@racket[from-y])
to (@racket[to-x],@racket[to-y]).
}
}

5
pkgs/gui-pkgs/gui-lib/mrlib/private/graph.rkt
View File

@ -204,6 +204,11 @@
[edge-labels? #t]
[cache-arrow-drawing? #f])
(define/public (set-edge-label-font f)
(set! edge-label-font f)
(invalidate-bitmap-cache))
(define/public (get-edge-label-font) edge-label-font)
(define draw-arrow-heads? #t)
(define flip-labels? #t)
(inherit refresh get-admin)