hans/ellipsis-msg
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Hans Dijkema
2025-08-07 23:51:32 +02:00
parent a7b65c7edb
commit b10712a9e1
1 changed files with 20 additions and 4 deletions
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24
main.rkt
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@@ -17,15 +17,20 @@
(define/private (ellipsize w l)
(let ((ext (call-with-values (lambda () (get-window-text-extent l font))
(lambda (w h) w))))
(if (< ext w)
;(printf "label: ~a, max-w: ~a, w: ~a\n" l w ext)
(if (or (< w 10) (<= ext w))
l
(let* ((factor (/ w ext))
(strl (string-length l))
(n-strl (round (* strl factor)))
(drop (- strl n-strl)))
(if (eq? ellipsis 'right)
(ellipsize w (str:string-drop l drop))
(ellipsize w (str:string-drop-right l drop)))))))
(let ((nl (str:string-drop l drop)))
(printf "new-try ~a\n" nl)
(ellipsize w (str:string-drop l drop)))
(let ((nl (str:string-drop-right l drop)))
(printf "new-try ~a\n" nl)
(ellipsize w (str:string-drop-right l drop))))))))
(define/override (set-label l . resize)
(let ((rsz #f))
@@ -38,6 +43,7 @@
(lambda (w h) w)))
)
(set! my_label l)
;(printf "Ellipsis = ~a\n" ellipsis)
(set! ellipsis_label
(if (< ext width)
l
@@ -45,8 +51,18 @@
(if (eq? ellipsis 'left) "..." "")
l
(if (eq? ellipsis 'right) "..." "")))))
;(printf "Setting label to ~a\n" ellipsis_label)
(super set-label ellipsis_label)))))
(define/override (get-label)
my_label)
))
))
;(define win (new frame% [label "Hi there!"]))
;(define hp1 (new horizontal-pane% [parent win]))
;(define btn1 (new button% [label "Longer 1"] [parent hp1] [callback (lambda (b e) (send lbl1 set-label "This is a very long text, yes a longer text than we initial put"))]))
;(define lbl1 (new ellipsis-msg% [label "This is an ellipsis label"] [parent hp1] [ellipsis 'right]))
;(define hp2 (new horizontal-pane% [parent win]))
;(define btn2 (new button% [label "Longer 2"] [parent hp2] [callback (lambda (b e) (send lbl2 set-label "This is a very long second text, yes a longer text than we initial put"))]))
;(define lbl2 (new ellipsis-msg% [label "This is an ellipsis label"] [parent hp2] [ellipsis 'left]))
;(send win show #t)