118 lines
2.6 KiB
Factor
118 lines
2.6 KiB
Factor
! Copyright (C) 2005, 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: accessors arrays hashtables io kernel math math.functions
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namespaces make opengl sequences strings splitting ui.gadgets
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ui.gadgets.tracks ui.gadgets.packs fonts ui.render ui.pens.solid
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ui.baseline-alignment ui.text colors colors.constants models
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combinators opengl.gl ;
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IN: ui.gadgets.labels
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! A label gadget draws a string.
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TUPLE: label < gadget text font ;
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SLOT: string
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M: label string>> ( label -- string )
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text>> dup string? [ "\n" join ] unless ; inline
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<PRIVATE
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PREDICATE: string-array < array [ string? ] all? ;
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PRIVATE>
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: ?string-lines ( string -- string/array )
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CHAR: \n over member-eq? [ string-lines ] when ;
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ERROR: not-a-string object ;
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M: label string<< ( string label -- )
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[
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{
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{ [ dup string-array? ] [ ] }
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{ [ dup string? ] [ ?string-lines ] }
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[ not-a-string ]
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} cond
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] dip text<< ; inline
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: label-theme ( gadget -- gadget )
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sans-serif-font >>font ; inline
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: new-label ( string class -- label )
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new
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swap >>string
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label-theme ; inline
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: <label> ( string -- label )
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label new-label ;
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: >label< ( label -- font text )
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[ font>> ] [ text>> ] bi ;
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M: label pref-dim*
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>label< text-dim ;
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<PRIVATE
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: label-metrics ( label -- metrics )
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>label< dup string? [ first ] unless line-metrics ;
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PRIVATE>
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M: label baseline
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label-metrics ascent>> round ;
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M: label cap-height
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label-metrics cap-height>> round ;
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M: label draw-gadget*
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>label<
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[
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background get [ font-with-background ] when*
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foreground get [ font-with-foreground ] when*
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] dip
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draw-text ;
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M: label gadget-text* string>> % ;
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TUPLE: label-control < label ;
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M: label-control model-changed
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swap value>> >>string relayout ;
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: <label-control> ( model -- gadget )
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"" label-control new-label
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swap >>model ;
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: text-theme ( gadget -- gadget )
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monospace-font >>font ;
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: reverse-video-theme ( label -- label )
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sans-serif-font reverse-video-font >>font
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COLOR: black <solid> >>interior ;
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GENERIC: >label ( obj -- gadget )
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M: string >label <label> ;
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M: array >label <label> ;
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M: object >label ;
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M: f >label drop <gadget> ;
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<PRIVATE
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: label-on-left/right ( -- track )
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horizontal <track>
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0 >>fill
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+baseline+ >>align
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{ 5 5 } >>gap ; inline
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PRIVATE>
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: label-on-left ( gadget label -- track )
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label-on-left/right
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swap >label f track-add
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swap 1 track-add ;
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: label-on-right ( label gadget -- track )
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label-on-left/right
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swap f track-add
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swap >label 1 track-add ;
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