67 lines
2.8 KiB
Racket
67 lines
2.8 KiB
Racket
#lang scribble/manual
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@(require
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scribble/example
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(for-label ;racket
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;racket/base
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;racket/string
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racket/gui
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;racket/file
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)
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@(for-label ellipsis-msg))
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@title[#:tag "ellipsis-msg"]{A message% with ellipsis (...) to the left or right}
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@author[@author+email["Hans Dijkema" "hans@dijkewijk.nl"]]
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@defmodule[ellipsis-msg]
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This module provides a new class @racket[ellipsis-msg%] that will cut the label of with ellipsis (...) when it is too long
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for the current width. The @racket[ellipsis] parameter tells where to put the ellipsis.
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@defclass[ellipsis-msg% message% ()]{
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An ellipis-msg will cut the label with ellipsis (...) if there's not enough room to hold it.
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See also @racket[message%].
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@defconstructor[([label (or/c label-string? (is-a?/c bitmap%)
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(or/c 'app 'caution 'stop))]
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[parent (or/c (is-a?/c frame%) (is-a?/c dialog%)
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(is-a?/c panel%) (is-a?/c pane%))]
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[ellipsis symbol? 'right]
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[style (listof (or/c 'deleted)) null]
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[font (is-a?/c font%) normal-control-font]
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[color (or/c #f string? (is-a?/c color%)) #f]
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[enabled any/c #t]
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[vert-margin spacing-integer? 2]
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[horiz-margin spacing-integer? 2]
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[min-width (or/c dimension-integer? #f) #f]
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[min-height (or/c dimension-integer? #f) #f]
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[stretchable-width any/c #f]
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[stretchable-height any/c #f]
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[auto-resize any/c #f])]{
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Creates the ellipsis-msg% with the given ellipsis parameter.
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}
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@defmethod*[#:mode override ([(set-label (label string?) [resize boolean? #f]) void?])]{
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Sets the message label. If resize = #t, the label will be resized (if auto-resize = #t)
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}
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}
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@section{Example code}
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@#reader scribble/comment-reader
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[racketblock
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(require racket/gui)
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(require ellipsis-msg)
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(define win (new frame% [label "Hi there!"]))
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(define hp1 (new horizontal-pane% [parent win]))
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(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"))]))
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(define lbl1 (new ellipsis-msg% [label "This is an ellipsis label"] [parent hp1] [ellipsis 'right] [auto-resize #t] [stretchable-width #t]))
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(define hp2 (new horizontal-pane% [parent win]))
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(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"))]))
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(define lbl2 (new ellipsis-msg% [label "This is an ellipsis label"] [parent hp2] [ellipsis 'left] [auto-resize #t] [stretchable-width #t]))
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(send win show #t)
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]
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