83 lines
1.9 KiB
Factor
83 lines
1.9 KiB
Factor
! Copyright (C) 2009 Slava Pestov.
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! See http://factorcode.org/license.txt for BSD license.
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USING: kernel arrays sequences math math.order cache opengl
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opengl.gl strings fonts colors accessors namespaces
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ui.gadgets.worlds ;
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IN: ui.text
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<PRIVATE
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SYMBOL: font-renderer
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: world-text-handle ( world -- handle )
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dup text-handle>> [ <cache-assoc> >>text-handle ] unless
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text-handle>> ;
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HOOK: flush-layout-cache font-renderer ( -- )
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[ flush-layout-cache ] flush-layout-cache-hook set-global
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HOOK: string-dim font-renderer ( font string -- dim )
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HOOK: string-width font-renderer ( font string -- w )
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HOOK: string-height font-renderer ( font string -- h )
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M: object string-dim [ string-width ] [ string-height ] 2bi 2array ;
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M: object string-width string-dim first ;
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M: object string-height string-dim second ;
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HOOK: draw-string font-renderer ( font string -- )
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HOOK: free-fonts font-renderer ( world -- )
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: combine-text-dim ( dim1 dim2 -- dim3 )
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[ [ first ] bi@ max ]
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[ [ second ] bi@ + ]
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2bi 2array ;
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PRIVATE>
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HOOK: x>offset font-renderer ( x font string -- n )
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HOOK: offset>x font-renderer ( n font string -- x )
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GENERIC: text-dim ( font text -- dim )
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M: string text-dim string-dim ;
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M: array text-dim
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[ { 0 0 } ] 2dip [ string-dim combine-text-dim ] with each ;
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: text-width ( font text -- w ) text-dim first ;
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: text-height ( font text -- h ) text-dim second ;
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HOOK: font-metrics font-renderer ( font -- metrics )
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HOOK: line-metrics font-renderer ( font string -- metrics )
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GENERIC: draw-text ( font text -- )
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M: string draw-text draw-string ;
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M: selection draw-text draw-string ;
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M: array draw-text
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[
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[
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[ draw-string ]
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[ [ 0.0 ] 2dip string-height 0.0 glTranslated ] 2bi
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] with each
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] do-matrix ;
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USING: vocabs.loader system combinators ;
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{
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{ [ os macosx? ] [ "core-text" ] }
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{ [ os windows? ] [ "uniscribe" ] }
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{ [ os unix? ] [ "pango" ] }
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} cond "ui.text." prepend require
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