factor/library/ui/labels.factor

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! Copyright (C) 2005 Slava Pestov.
! See http://factor.sf.net/license.txt for BSD license.
IN: gadgets-labels
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USING: arrays freetype gadgets gadgets-layouts generic
hashtables io kernel math namespaces sequences styles ;
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! A label gadget draws a string.
TUPLE: label text ;
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C: label ( text -- label )
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dup delegate>gadget [ set-label-text ] keep ;
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: set-label-text* ( text label -- )
2dup label-text =
[ 2dup [ set-label-text ] keep relayout ] unless 2drop ;
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: label-size ( gadget text -- dim )
dup gadget-font swap label-text string-size 0 3array ;
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M: label pref-dim ( label -- dim )
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label-size ;
: draw-label ( label -- )
dup gadget-font swap label-text draw-string ;
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M: label draw-gadget* ( label -- )
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dup delegate draw-gadget* draw-label ;
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M: label set-message ( string/f label -- )
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set-label-text* ;